CN106321343B - Isotherm compression air energy storage power generation and its method based on fluid temperature control - Google Patents
Isotherm compression air energy storage power generation and its method based on fluid temperature control Download PDFInfo
- Publication number
- CN106321343B CN106321343B CN201610608912.6A CN201610608912A CN106321343B CN 106321343 B CN106321343 B CN 106321343B CN 201610608912 A CN201610608912 A CN 201610608912A CN 106321343 B CN106321343 B CN 106321343B
- Authority
- CN
- China
- Prior art keywords
- liquid
- gas
- temperature
- piston
- power generation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 105
- 238000004146 energy storage Methods 0.000 title claims abstract description 70
- 230000006835 compression Effects 0.000 title claims description 10
- 238000007906 compression Methods 0.000 title claims description 10
- 239000012530 fluid Substances 0.000 title 1
- 239000007788 liquid Substances 0.000 claims abstract description 535
- 239000007789 gas Substances 0.000 claims abstract description 205
- 238000005381 potential energy Methods 0.000 claims abstract description 52
- 230000005611 electricity Effects 0.000 claims abstract description 37
- 239000002918 waste heat Substances 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000009471 action Effects 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 12
- 230000007246 mechanism Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/013—Reciprocating-piston liquid engines with single cylinder, single-acting piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/003—Reciprocating-piston liquid engines controlling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/26—Reciprocating-piston liquid engines adapted for special use or combined with apparatus driven thereby
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
本发明属于压缩空气储能技术领域，尤其涉及一种基于液体温度控制的等温压缩空气储能发电系统及其方法，由内控温液体活塞、水力发电设备、储气罐、低压水池、控温液体源及外部温度调节设施、液体驱动装置和阀门组成；储能时，水力发电设备将电能转化为液体势能，在内控温液体活塞中将气体压缩，产生热量被液体储存，将高压气体送入储气罐中；发电时，在内控温液体活塞中高压气体膨胀做功，从液体中吸收热量，推动水力发电设备发电；将控温液体源内液体替换内控温液体活塞原有液体，控制液体活塞内气体温度；实现控温液体源的液体温度控制，并实现开放式直供运行模式、密闭式直供运行模式、余热利用模式、高效发电模式四种工作模式。
The invention belongs to the technical field of compressed air energy storage, and in particular relates to an isothermal compressed air energy storage power generation system based on liquid temperature control and a method thereof. Liquid source and external temperature adjustment facilities, liquid driving device and valves; when storing energy, the hydropower equipment converts electrical energy into liquid potential energy, compresses the gas in the internal temperature-controlled liquid piston, generates heat that is stored by the liquid, and sends the high-pressure gas to into the gas storage tank; when generating electricity, the high-pressure gas in the internal temperature control liquid piston expands to do work, absorb heat from the liquid, and drive the hydroelectric power generation equipment to generate electricity; replace the original liquid in the internal temperature control liquid piston with the liquid in the temperature control liquid source, and control The gas temperature in the liquid piston; realize the liquid temperature control of the temperature-controlled liquid source, and realize four working modes: open direct supply operation mode, closed direct supply operation mode, waste heat utilization mode, and high-efficiency power generation mode.
Description
技术领域technical field
本发明属于压缩空气储能技术领域，尤其涉及一种基于液体温度控制的等温压缩空气储能发电系统及其方法。The invention belongs to the technical field of compressed air energy storage, and in particular relates to an isothermal compressed air energy storage power generation system based on liquid temperature control and a method thereof.
背景技术Background technique
现代电力发展迅猛，储能技术已经成为电网运行过程中的重要组成部分。在各类储能技术中，现阶段可行的大容量储能技术只有抽水蓄能和压缩空气储能两种。其中，抽水蓄能储能技术对地理条件要求苛刻，且对环境破坏严重等等，抽水蓄能的发展和应用受到限制。而压缩空气储能没有诸如此类的问题，有很大的发展前景。但是传统压缩空气储能需要和燃气轮机配合，需要消耗燃料，产生污染。近年来，已有研究将液体活塞应用于压缩空气储能中，解决了压缩空气储能所带来的环境污染问题，但空气缩放多为绝热和自由膨胀过程，效率较低。With the rapid development of modern electric power, energy storage technology has become an important part of the grid operation process. Among various energy storage technologies, the only feasible large-capacity energy storage technologies at this stage are pumped water storage and compressed air energy storage. Among them, the pumped storage energy storage technology has strict requirements on geographical conditions and serious damage to the environment, etc., the development and application of pumped storage are limited. Compressed air energy storage has no such problems and has great development prospects. However, traditional compressed air energy storage needs to cooperate with gas turbines, which consumes fuel and generates pollution. In recent years, researches have applied liquid pistons to compressed air energy storage to solve the environmental pollution problem caused by compressed air energy storage. However, air scaling is mostly adiabatic and free expansion process, and the efficiency is low.
国内外现在有液体活塞中，每个活塞腔中由一个单一高压容器组成，无其他控温设计。其弊端在于气体缩放过程多为绝热、自由膨胀过程，使得压缩空气释放能量效率低；并且温度控制能力低，工作模式单一。There are now liquid pistons at home and abroad, each piston chamber is composed of a single high-pressure container, and there is no other temperature control design. The disadvantage is that the gas scaling process is mostly adiabatic and free expansion process, which makes the energy release efficiency of compressed air low; and the temperature control ability is low, and the working mode is single.
发明内容Contents of the invention
为了提高压缩空气储能发电效率和温度控制能力，本发明提出了一种基于液体温度控制的等温压缩空气储能发电系统及其方法，系统包括：内控温液体活塞、水力发电设备、储气罐、低压水池、控温液体源及相配套的外部温度调节设施、液体驱动装置和阀门，内控温液体活塞分别与高压气体管道及低压气体管道相连，高压气体管道与储气罐相连，控温液体源通过第二液体驱动装置与内控温液体活塞相连，水力发电设备连接内控温液体活塞、低压水池和电网，低压水池通过第一液体驱动装置与控温液体源相连。In order to improve the power generation efficiency and temperature control ability of compressed air energy storage, the present invention proposes an isothermal compressed air energy storage power generation system and its method based on liquid temperature control. The system includes: internal temperature control liquid piston, hydroelectric power generation equipment, gas storage Tank, low pressure pool, temperature control liquid source and matching external temperature adjustment facilities, liquid drive device and valve, internal temperature control liquid piston is connected with high pressure gas pipeline and low pressure gas pipeline respectively, high pressure gas pipeline is connected with gas storage tank, control The temperature liquid source is connected to the internal temperature control liquid piston through the second liquid driving device, the hydroelectric power generation equipment is connected to the internal temperature control liquid piston, the low pressure pool and the power grid, and the low pressure pool is connected to the temperature control liquid source through the first liquid drive device.
一种基于液体温度控制的等温压缩空气储能系统的储能发电方法包括：An energy storage and power generation method of an isothermal compressed air energy storage system based on liquid temperature control includes:
储能时，水力发电设备将电能转化为液体势能，进一步在内控温液体活塞中将气体压缩，产生热量被液体储存，使液体势能转换为气体势能，将高压气体送入储气罐中；When storing energy, the hydropower equipment converts electrical energy into liquid potential energy, further compresses the gas in the internal temperature-controlled liquid piston, generates heat that is stored by the liquid, converts the liquid potential energy into gas potential energy, and sends the high-pressure gas into the gas storage tank;
发电时，在内控温液体活塞中高压气体膨胀做功，从液体中吸收热量，将气体势能转换成液体势能进而推动水力发电设备发电；在储能发电过程中内控温液体活塞利用液体比热容大的特点控制气体在缩放时的温度变化；通过液体更换协调方法将控温液体源内液体替换内控温液体活塞原有液体，控制液体活塞内气体温度；通过配套的外部温度调节设施实现控温液体源的液体温度控制方法，有四种工作模式：开放式直供运行模式、密闭式直供运行模式、余热利用模式、高效发电模式。When generating electricity, the high-pressure gas in the internal temperature-controlled liquid piston expands to do work, absorbing heat from the liquid, converting the gas potential energy into liquid potential energy, and then driving the hydroelectric power generation equipment to generate electricity; in the process of energy storage and power generation, the internal temperature-controlled liquid piston utilizes the large specific heat capacity of the liquid The characteristics of the gas control the temperature change during scaling; through the liquid replacement coordination method, the liquid in the temperature control liquid source replaces the original liquid in the internal temperature control liquid piston, and controls the gas temperature in the liquid piston; the temperature control liquid is realized through the supporting external temperature adjustment facilities The liquid temperature control method of the source has four working modes: open direct supply operation mode, closed direct supply operation mode, waste heat utilization mode, and high-efficiency power generation mode.
所述液体更换协调方法与储能发电过程有并行工作和串行工作两种协调运行方式；并行工作是指液体更换与储能发电同时进行，串行工作是指液体更换与储能发电依次分时进行；当内控温液体活塞由单个液体活塞独立构成时，其液体更换协调方法与储能发电过程只有串行工作运行方式，具体过程如下：The liquid replacement coordination method and the energy storage power generation process have two coordinated operation modes: parallel work and serial work. When the internal temperature control liquid piston is composed of a single liquid piston independently, the liquid replacement coordination method and the energy storage and power generation process only have a serial operation mode, and the specific process is as follows:
储能时，液体活塞内充满气体，在水力发电设备的作用下将低压水池中的液体送入液体活塞中压缩气体使其气压升高，当达到高压气体管道中的气体气压时打开阀门，将压缩气体通过高压气体管道送入储气罐中储存起来，储能过程结束后，将液体活塞内液体在第三液体驱动装置作用下送出到外部液体源，再将通过外部温度调节设施调温至所需温度的控温液体源中液体送入低压水池，或直接将控温液体源作为低压水池运行，进行下一次储能过程；When storing energy, the liquid piston is filled with gas, and under the action of hydroelectric power generation equipment, the liquid in the low-pressure pool is sent into the liquid piston to compress the gas to increase its pressure. When the gas pressure in the high-pressure gas pipeline is reached, the valve is opened, and the The compressed gas is sent into the gas storage tank through the high-pressure gas pipeline for storage. After the energy storage process is completed, the liquid in the liquid piston is sent out to the external liquid source under the action of the third liquid driving device, and then the temperature is adjusted to The liquid in the temperature-controlled liquid source of the required temperature is sent into the low-pressure pool, or the temperature-controlled liquid source is directly operated as a low-pressure pool for the next energy storage process;
发电时，液体活塞内充满液体，打开阀门，储气罐中的高压气体通过高压气体管道进入液体活塞中膨胀做功，推动液体通过水力发电设备流出发电，发电过程结束后，在第二液体驱动装置作用下将控温液体源中液体送入液体活塞中，液体活塞内又充满液体，进行下一次发电过程。When generating power, the liquid piston is filled with liquid, the valve is opened, and the high-pressure gas in the gas storage tank enters the liquid piston through the high-pressure gas pipeline to expand and do work, pushing the liquid to flow out through the hydroelectric power generation equipment to generate power. After the power generation process is completed, the second liquid drive device Under the action, the liquid in the temperature-controlled liquid source is sent into the liquid piston, and the liquid piston is filled with liquid again to carry out the next power generation process.
所述内控温液体活塞由两个液体活塞成对或多个液体活塞两两成对组成，其液体更换协调方法与储能发电过程有串行工作和并行工作两种运行方式，具体过程分别如下：The internal temperature control liquid piston is composed of two liquid pistons in pairs or multiple liquid pistons in pairs. The liquid replacement coordination method and the energy storage and power generation process have two operating modes: serial work and parallel work. The specific processes are respectively as follows:
1)液体更换协调方法与储能发电过程串行工作运行方式为：1) The liquid replacement coordination method and the energy storage power generation process work in series and operate as follows:
储能时，第一液体活塞内充满气体，第二液体活塞充满液体，根据温度需要第二液体活塞中的液体经过换液过程更换为所需温度液体，液体更换过程结束后在水力发电设备的作用下将第二液体活塞中的液体送入第一液体活塞中压缩气体使其气压升高，当达到高压气体管道中的气体气压时打开阀门，将压缩气体通过高压气体管道送入储气罐中储存起来，此时第二液体活塞内充满气体，第一液体活塞内充满液体，如此反复上述储能过程可将电能源源不断转换为压缩空气势能储存起来；When storing energy, the first liquid piston is filled with gas, and the second liquid piston is filled with liquid. According to the temperature, the liquid in the second liquid piston is replaced with the required temperature liquid through the liquid replacement process. Under the action, the liquid in the second liquid piston is sent into the first liquid piston to compress the gas to increase its pressure. When the gas pressure in the high-pressure gas pipeline is reached, the valve is opened, and the compressed gas is sent into the gas storage tank through the high-pressure gas pipeline. At this time, the second liquid piston is filled with gas, and the first liquid piston is filled with liquid. Repeating the above energy storage process can continuously convert the electric energy source into compressed air potential energy and store it;
发电时，第一液体活塞内充满液体，第二液体活塞充满气体，打开阀门，储气罐中的高压气体通过高压气体管道进入第一液体活塞中膨胀，推动液体通过水力发电设备流出发电，发电过程结束后，根据温度需要经过换液过程使第二液体活塞中更换为所需温度液体，此时第一液体活塞内充满气体，第二液体活塞充满液体，如此反复上述发电过程可将压缩空气的势能完全释放用于发电；When generating electricity, the first liquid piston is filled with liquid, the second liquid piston is filled with gas, the valve is opened, the high-pressure gas in the gas storage tank enters the first liquid piston through the high-pressure gas pipeline and expands, and the liquid is pushed out through the hydroelectric power generation equipment to generate electricity. After the process is over, the second liquid piston is replaced with liquid at the required temperature through the liquid exchange process according to the temperature. At this time, the first liquid piston is filled with gas, and the second liquid piston is filled with liquid. Repeating the above power generation process can compress the air The potential energy is completely released for power generation;
2)液体更换协调方法与储能发电过程并行工作运行方式为：2) The liquid replacement coordination method works in parallel with the energy storage and power generation process as follows:
储能时，第一液体活塞内充满气体，第二液体活塞内充满液体，在水力发电设备的作用下将控温液体源中的液体送入第一液体活塞中，压缩第一液体活塞中的气体使其气压升高，当达到高压气体管道中的气体气压时打开阀门，将压缩气体通过高压气体管道送入储气罐中储存起来，同时在第三液体驱动装置的作用下将第二液体活塞中的液体排出，此时第一液体活塞内充满液体，第二液体活塞内充满气体，如此反复上述储能过程可将电能源源不断转换为压缩空气势能储存起来。When storing energy, the first liquid piston is filled with gas, and the second liquid piston is filled with liquid. Under the action of the hydropower equipment, the liquid in the temperature-controlled liquid source is sent into the first liquid piston, and the liquid in the first liquid piston is compressed. The gas makes its air pressure rise. When the gas pressure in the high-pressure gas pipeline is reached, the valve is opened, and the compressed gas is sent into the gas storage tank through the high-pressure gas pipeline for storage. At the same time, the second liquid is driven by the third liquid driving device. The liquid in the piston is discharged, and at this time the first liquid piston is filled with liquid, and the second liquid piston is filled with gas. Repeating the above energy storage process can continuously convert the electrical energy source into compressed air potential energy and store it.
发电时，第一液体活塞内充满液体，第二液体活塞内充满气体，打开阀门，储气罐中的高压气体通过高压气体管道进入第一液体活塞中膨胀，推动液体通过水力发电设备流出发电，同时在第二液体驱动装置的作用下将控温液体源中的液体送入第二液体活塞中，此时第一液体活塞内充满气体，第二液体活塞内充满液体，如此反复上述发电过程可将压缩空气的势能完全释放用于发电。When generating electricity, the first liquid piston is filled with liquid, the second liquid piston is filled with gas, the valve is opened, the high-pressure gas in the gas storage tank enters the first liquid piston through the high-pressure gas pipeline and expands, and the liquid is pushed out through the hydroelectric power generation equipment to generate electricity. At the same time, under the action of the second liquid driving device, the liquid in the temperature-control liquid source is sent into the second liquid piston. At this time, the first liquid piston is filled with gas, and the second liquid piston is filled with liquid. Repeating the above power generation process in this way can The potential energy of compressed air is completely released for power generation.
所述多个液体活塞中两两成对的液体活塞的运行方式与上述第一液体活塞和第二液体活塞的一致，并且多个液体活塞可以在液体更换过程中提高运行效率。The paired liquid pistons among the plurality of liquid pistons operate in the same manner as the first liquid piston and the second liquid piston, and the plurality of liquid pistons can improve operating efficiency during liquid replacement.
所述液体温度控制方法是指通过配套的外部温度调节设施，对控温液体源的液体进行温度调节控制；实现四种工作模式分别为：The liquid temperature control method refers to the temperature adjustment and control of the liquid in the temperature control liquid source through the supporting external temperature adjustment facilities; the realization of four working modes is respectively:
开放式直供运行模式，用于工作的液体温度近似不变，控温液体源为唯一的液体来源且为开放式，水源足够大，包括：海洋、水库、河流、湖泊；Open direct supply operation mode, the temperature of the liquid used for work is approximately constant, the temperature-controlled liquid source is the only liquid source and is open, and the water source is large enough, including: oceans, reservoirs, rivers, lakes;
密闭式直供运行模式，控温液体源为唯一的液体来源且为保温密闭式，储能时，液体送入内控温液体活塞腔中，气体压缩所产生的热量传递给液体，这部分液体在升温后被绝热储存起来；发电时，这部分液体送入内控温液体活塞在气体膨胀过程中提供热量，发电结束后，该部分液体又被绝热储存起来；如此反复循环利用；Closed direct supply operation mode, the temperature control liquid source is the only liquid source and it is heat preservation and closed. When storing energy, the liquid is sent into the internal temperature control liquid piston chamber, and the heat generated by gas compression is transferred to the liquid. This part of the liquid After heating up, it is stored adiabatically; when generating electricity, this part of the liquid is sent to the internal temperature control liquid piston to provide heat during the gas expansion process. After the power generation is over, this part of the liquid is stored adiabatically again; so repeated recycling;
余热利用模式，控温液体源分成两种温度差异明显的液体源，储能时选择温度较高的液体源，往内控温液体活塞腔中送入温度较高的液体，气体压缩所产生的热量传递给液体，使液体温度进一步升高，利用高温液体实现供热供暖；发电时选择温度较低的液体源，往内控温液体活塞腔中送入温度较低的液体，压缩空气膨胀从液体中吸热，实现低品质热量利用，在此过程中气体和液体温度都会降低，可用于制冷；为提高供暖效果，储能时换热器工作在升温模式下升高液体温度，为提高制冷效果，发电时换热器工作在降温模式下降低液体温度；In the waste heat utilization mode, the temperature-controlled liquid source is divided into two liquid sources with obvious temperature differences. When storing energy, the liquid source with a higher temperature is selected, and the liquid with a higher temperature is sent into the internal temperature-controlled liquid piston chamber, and the gas generated by compression The heat is transferred to the liquid to further increase the temperature of the liquid, and the high temperature liquid is used to realize heating and heating; when generating electricity, a liquid source with a lower temperature is selected, and the liquid with a lower temperature is sent into the internal temperature control liquid piston chamber, and the compressed air expands from Heat is absorbed in the liquid to realize the utilization of low-quality heat. During this process, the temperature of gas and liquid will decrease, which can be used for refrigeration; in order to improve the heating effect, the heat exchanger works in the heating mode to increase the temperature of the liquid during energy storage. In order to improve the cooling Effect, when generating electricity, the heat exchanger works in the cooling mode to reduce the liquid temperature;
高效发电模式，控温液体源分成两种温度差异明显的液体源，储能时选择温度较低的液体源，低温液体被送入内控温液体活塞中，气体的热量被低温液体吸收，使气体温度和气体压强降低，减少气体压缩所用的能量；发电时选择温度较高的液体源，高温液体被送入内控温液体活塞中，气体吸收高温液体的热量，使气体温度和气体压强升高，以实现更高的能量输出；为提高储能发电效率，储能时换热器工作在降温模式下降低液体温度，发电时换热器工作在升温模式下升高液体温度；In the high-efficiency power generation mode, the temperature-controlled liquid source is divided into two liquid sources with obvious temperature differences. When storing energy, the liquid source with a lower temperature is selected. The low-temperature liquid is sent to the internal temperature-controlled liquid piston, and the heat of the gas is absorbed by the low-temperature liquid. The gas temperature and gas pressure are reduced, reducing the energy used for gas compression; when generating electricity, a liquid source with a higher temperature is selected, and the high-temperature liquid is sent into the internal temperature-controlled liquid piston, and the gas absorbs the heat of the high-temperature liquid to increase the gas temperature and gas pressure. High, to achieve higher energy output; in order to improve the efficiency of energy storage and power generation, the heat exchanger works in the cooling mode to reduce the liquid temperature during energy storage, and the heat exchanger works in the heating mode to increase the liquid temperature during power generation;
在上述所提到的储能发电过程中，低压水池可以和控温液体源合二为一。In the process of energy storage and power generation mentioned above, the low-pressure pool can be combined with the temperature-controlled liquid source.
所述内控温液体活塞是指通过液体活塞内部液体控制气体压缩或膨胀时温度的变化，腔内采用蓄气单元技术、蓄水单元技术、填料塔技术、平板塔技术、强制液体循环技术或换热导管技术实现快速的热质交换。The internal temperature control liquid piston refers to the temperature change when the gas is compressed or expanded by the internal liquid of the liquid piston. The cavity adopts gas storage unit technology, water storage unit technology, packed tower technology, flat tower technology, forced liquid circulation technology or Heat exchange pipe technology realizes rapid heat and mass exchange.
其中，蓄气单元的结构为上部封闭底部开放的罩缸结构或封闭管道形式的气包结构，这两种结构分别对应气液热质交换或者导热式这两种控温方式；蓄水单元以导热材料构造，用于存储液体，增大与气体的接触面积，促进液体和气体的热交换，基于液体比热大的特点，利用稳定的液体温度控制气体温度，限制温度变化在一定范围内；填料塔是由塔体、喷淋装置、填料及进出口等部件组成，液体自塔上进入，通过液体喷淋装置均匀淋洒在塔截面上，气体由塔底进入塔内，通过填料缝隙中的自由空间上升，从塔上部排出，气液在填料塔内呈逆流，得到充分接触，达到快速热质交换的目的，平板塔作用与填料塔相同；强制液体循环是指当液面低于液体活塞腔内的蓄水单元主体后，蓄水单元下部管道的一端或两端接入水泵，驱动液体活塞腔底部的液体和腔内蓄水单元内的液体循环；或采用额外的管道和水泵，将液体活塞腔底部的液体送入水槽结构蓄水单元内，形成液体循环增强液体和气体热交换。Among them, the structure of the gas storage unit is a cover cylinder structure with a closed top and an open bottom or an air bag structure in the form of a closed pipeline. These two structures correspond to the two temperature control methods of gas-liquid heat and mass exchange or heat conduction; The heat-conducting material structure is used to store liquid, increase the contact area with gas, and promote the heat exchange between liquid and gas. Based on the characteristics of large specific heat of liquid, the stable liquid temperature is used to control the gas temperature, and the temperature change is limited within a certain range; The packed tower is composed of the tower body, spraying device, packing and inlet and outlet. The liquid enters from the tower and is evenly sprayed on the tower section through the liquid spraying device. The gas enters the tower from the bottom of the tower and passes through the gap of the packing. The free space of the flat tower rises and is discharged from the upper part of the tower. The gas and liquid flow countercurrently in the packed tower and are fully contacted to achieve the purpose of rapid heat and mass exchange. The function of the flat tower is the same as that of the packed tower; After the main body of the water storage unit in the piston chamber, one or both ends of the lower pipe of the water storage unit are connected to the water pump to drive the liquid at the bottom of the piston chamber and the liquid in the water storage unit in the chamber to circulate; or use additional pipes and water pumps, The liquid at the bottom of the liquid piston chamber is sent into the water storage unit of the water tank structure to form a liquid circulation to enhance the heat exchange between liquid and gas.
所述系统在低压水池和控温液体源之间设置换热器，即所述外部温度调节设施，根据所需液体温度在液体更换过程中将液体温度调温至所需要求，所述换热器的工作模式有两种：The system sets a heat exchanger between the low-pressure pool and the temperature-controlled liquid source, that is, the external temperature adjustment facility, and adjusts the temperature of the liquid to the required temperature during the liquid replacement process according to the required liquid temperature. There are two working modes of the device:
一是通过蒸发、冷凝塔、水循环或地下冷却的液体降温方式降低液体温度；二是通过外部热源、火电厂余热、太阳能、地热能的液体升温方式升高液体温度。One is to reduce the temperature of the liquid through evaporation, condensation tower, water circulation or underground cooling; the other is to increase the temperature of the liquid through external heat sources, waste heat from thermal power plants, solar energy, and geothermal energy.
所述液体驱动装置是水泵或液压活塞，根据液体流动需要为单向驱动或双向驱动，将内控温液体活塞、控温液体源、低压水池的高低位置合理布局实现在重力作用下液体直接流动，从而省去液体驱动装置。The liquid driving device is a water pump or a hydraulic piston, which is one-way driving or two-way driving according to the needs of liquid flow, and the high and low positions of the internal temperature control liquid piston, temperature control liquid source, and low pressure pool are reasonably arranged to realize the direct flow of liquid under the action of gravity , thereby eliminating the need for a liquid drive.
所述水力发电设备为液压势能转换装置、抽蓄发电机组、水泵水轮发电机组、液压马达或者其他水力设备，液压势能转换装置包括液压活塞机构及连接的直线发电机、经曲柄连接的旋转发电机或另一组外部势能源和发电设备。The hydroelectric power generation equipment is a hydraulic potential energy conversion device, a pumped-storage generator set, a water pump turbine generator set, a hydraulic motor or other hydraulic equipment, and the hydraulic potential energy conversion device includes a hydraulic piston mechanism and a connected linear generator, a rotary power generator connected through a crank machine or another set of external potential energy and power generation equipment.
所述水力发电设备的运行方式有如下几种：一是以液压势能传递方式发电，在由两组活塞组成的液压活塞组两边连接两个液压势能源，通过液压活塞组做功将一个液压势能源的液压势能转换成另外一个液压势能源的液压势能，再用于发电；二是液压势能转换成机械能方式发电，将液压势能源连接至液压活塞组上，通过液压势能源中的液体推动液压活塞组做功，将液压势能源的液压势能转换成机械能，再通过直线发电机或者曲柄发电机发电；三是液压势能直接发电方式，将液压势能源通过换向阀连接到水轮发电机上发电。The operation modes of the hydroelectric power generation equipment are as follows: one is to generate electricity by means of hydraulic potential energy transmission, two hydraulic potential energy sources are connected to both sides of the hydraulic piston group composed of two sets of pistons, and one hydraulic potential energy The hydraulic potential energy is converted into the hydraulic potential energy of another hydraulic potential energy, and then used for power generation; the second is to convert the hydraulic potential energy into mechanical energy to generate electricity, connect the hydraulic potential energy to the hydraulic piston group, and push the hydraulic piston through the liquid in the hydraulic potential energy Group work, converting the hydraulic potential energy of the hydraulic potential energy into mechanical energy, and then generating electricity through a linear generator or a crank generator; the third is the direct power generation method of the hydraulic potential energy, connecting the hydraulic potential energy to the hydro-generator through a reversing valve to generate electricity.
所述势能转换成机械能方式发电的情况下，水力发电设备的结构如下：将液压势能源连接到液压活塞组上，液压活塞组的连杆与发电单元相连；其中发电单元的实现形式包括：直线发电机、曲柄连接的旋转发电机。When the potential energy is converted into mechanical energy to generate electricity, the structure of the hydroelectric power generation equipment is as follows: the hydraulic potential energy is connected to the hydraulic piston group, and the connecting rod of the hydraulic piston group is connected to the power generation unit; wherein the realization form of the power generation unit includes: a straight line Generator, crank-connected rotating electrical generator.
所述直线发电机的运行方式如下：液压势能源与液压活塞组相连，液压活塞组的活塞杆与直线发电机的动子直连，液压势能源中的液体通过液压活塞组将液体势能转换为机械能，直接驱动直线电机运动发电。The operation mode of the linear generator is as follows: the hydraulic potential energy is connected with the hydraulic piston group, the piston rod of the hydraulic piston group is directly connected with the mover of the linear generator, and the liquid in the hydraulic potential energy is converted into liquid potential energy through the hydraulic piston group. Mechanical energy directly drives the linear motor to generate electricity.
所述曲柄连接的旋转发电机运行方式如下：液压势能源与液压活塞组相连，液压活塞组的活塞杆通过曲柄结构与旋转发电机连接，液压势能源中的液体通过液压活塞组将液体势能转换为机械能，带动曲柄结构运动继而驱动旋转发电机发电。The operation mode of the crank-connected rotary generator is as follows: the hydraulic potential energy source is connected with the hydraulic piston group, the piston rod of the hydraulic piston group is connected with the rotary generator through the crank structure, and the liquid in the hydraulic potential energy source is converted into the liquid potential energy through the hydraulic piston group As mechanical energy, it drives the crank structure to move and then drives the rotary generator to generate electricity.
本发明的有益效益包括以下几个方面：The beneficial effects of the present invention include the following aspects:
(1)本发明对传统压缩空气储能技术进行改良，以液体为介质对气体进行压缩和释放，减少了气体压缩膨胀时泄露和机械滑动带来的摩擦，能量释放彻底，效率高；既集成了液体活塞的优点，又兼顾了控温能力，提高了压缩空气储能发电的效率，具有很好的节能效果；解决了气体体积变化所带了剧烈温度变化对设备的潜在危害，保证了工作气体在储能发电过程中温度基本稳定。(1) The present invention improves the traditional compressed air energy storage technology, uses liquid as the medium to compress and release the gas, reduces the friction caused by leakage and mechanical sliding when the gas is compressed and expanded, and the energy release is thorough and efficient; both integrated It combines the advantages of the liquid piston with the temperature control ability, improves the efficiency of compressed air energy storage and power generation, and has a good energy-saving effect; it solves the potential harm to the equipment caused by the drastic temperature change caused by the gas volume change, and ensures the work The temperature of the gas is basically stable during the energy storage and power generation process.
(2)本发明基于内控温技术，并通过控制液体的温度来控制气体的温度，实现了不同工作运行模式及其不同的储能发电效率。(2) The present invention is based on the internal temperature control technology, and controls the temperature of the gas by controlling the temperature of the liquid, thereby realizing different operating modes and different energy storage and power generation efficiencies.
(3)本发明将压缩空气中的势能以液体为介质进行转换，通过水力发电设备实现液体势能和其他形式的能的转换。整套装置提高了压缩空气储能的能量利用效率，并且保留了液体活塞应用于压缩空气储能所具有少污染、少泄露、少摩擦的优点，构成了绿色高效的压缩空气储能系统。(3) The present invention converts the potential energy in the compressed air with the liquid as the medium, and realizes the conversion between the liquid potential energy and other forms of energy through the hydroelectric power generation equipment. The whole device improves the energy utilization efficiency of compressed air energy storage, and retains the advantages of less pollution, less leakage, and less friction that liquid pistons are used in compressed air energy storage, forming a green and efficient compressed air energy storage system.
(4)本发明将内控温液体活塞与液体源相连，可增加换热器以进一步调节要进入液体活塞腔的控温液体源的液体温度，从而实现不同储能发电效率的工作运行模式。(4) In the present invention, the internal temperature control liquid piston is connected to the liquid source, and a heat exchanger can be added to further adjust the liquid temperature of the temperature control liquid source entering the liquid piston cavity, thereby realizing working and operating modes with different energy storage and power generation efficiencies.
附图说明Description of drawings
图1是基于单个内控温液体活塞的系统运行实现方案；Figure 1 is a system operation realization scheme based on a single internal temperature control liquid piston;
图2是基于内控温液体活塞对的系统实现方案之一(液体更换协调方法与储能发电过程串行工作)；Figure 2 is one of the system implementation schemes based on the internal temperature control liquid piston pair (the liquid replacement coordination method and the energy storage power generation process work in series);
图3是基于内控温液体活塞对的系统实现方案之二(液体更换协调方法与储能发电过程并行工作)；Figure 3 is the second system implementation scheme based on the internal temperature control liquid piston pair (the liquid replacement coordination method works in parallel with the energy storage and power generation process);
图4是水力发电设备的实现形式；Fig. 4 is the realization form of hydropower equipment;
图5是水力发电设备为液压活塞机构，且发电单元为直线发电机的实现形式；Fig. 5 is a realization form in which the hydroelectric power generation equipment is a hydraulic piston mechanism, and the power generation unit is a linear generator;
图6是水力发电设备为液压活塞机构，且发电单元为曲柄连接的旋转发电机的实现形式；Fig. 6 is the implementation form of the hydroelectric power generation equipment as a hydraulic piston mechanism, and the power generation unit is a rotary generator connected by a crank;
图7是水力发电设备为液压活塞机构，且发电单元为虚拟抽水蓄能发电单元的实现形式；Fig. 7 is a realization form in which the hydroelectric power generation equipment is a hydraulic piston mechanism, and the power generation unit is a virtual pumped storage power generation unit;
图中标号：Labels in the figure:
1-高压气体管道，2-低压气体管道，3～8-液体管道，9～14、34～35-阀门，15～17-液体驱动装置，18-换热器，19-控温液体源，20、31-低压水池，21-水力发电设备，22、24-填料，23、25-内控温液体活塞，26-储气罐，27-直线发电机，28-曲柄连接的旋转发电机，29-水力设备，30-高压水池，32-液压活塞，33-液压活塞连杆。1-high-pressure gas pipeline, 2-low-pressure gas pipeline, 3-8-liquid pipeline, 9-14, 34-35-valve, 15-17-liquid drive device, 18-heat exchanger, 19-temperature-controlled liquid source, 20, 31-low-pressure water pool, 21-hydraulic power generation equipment, 22, 24-filler, 23, 25-internal temperature control liquid piston, 26-gas storage tank, 27-linear generator, 28-crank-connected rotary generator, 29-hydraulic equipment, 30-high pressure pool, 32-hydraulic piston, 33-hydraulic piston connecting rod.
具体实施方式Detailed ways
下面结合附图，对实施例作详细说明。The embodiments will be described in detail below in conjunction with the accompanying drawings.
图1是基于单个内控温液体活塞的系统运行实现方案。该系统由若干管道1～8，若干阀门9、10、13，液体驱动装置16～17，换热器18，控温液体源19，低压水池20，水力发电设备21，内控温液体活塞23，储气罐26组成；其中内控温液体活塞23分别与高压气体管道1及低压气体管道2相连，高压气体管道1与储气罐26相连，控温液体源19与内控温液体活塞23相连，水力发电设备21连接内控温液体活塞23、低压水池20和电网。Figure 1 is the realization of the system operation based on a single internal temperature control liquid piston. The system consists of several pipelines 1-8, several valves 9, 10, 13, liquid driving devices 16-17, heat exchanger 18, temperature-controlling liquid source 19, low-pressure pool 20, hydroelectric power generation equipment 21, and internal temperature-controlling liquid piston 23 , a gas storage tank 26; wherein the internal temperature control liquid piston 23 is connected to the high-pressure gas pipeline 1 and the low-pressure gas pipeline 2 respectively, the high-pressure gas pipeline 1 is connected to the gas storage tank 26, and the temperature control liquid source 19 is connected to the internal temperature control liquid piston 23 Connected, the hydroelectric power generation equipment 21 is connected to the internal temperature control liquid piston 23, the low-pressure water pool 20 and the power grid.
系统的液体更换协调方法与储能发电过程是串行工作运行方式，其具体过程为：The liquid replacement coordination method of the system and the energy storage and power generation process are in a serial operation mode, and the specific process is as follows:
储能时，液体活塞23内充满气体，在水力发电设备21的作用下将低压水池20中的液体送入液体活塞23中压缩气体使其气压升高，当达到高压气体管道1中的气体气压时打开阀门10，将压缩气体通过高压气体管道1送入储气罐26中储存起来；储能过程结束后，将液体活塞23内液体在液体驱动装置2作用下送出到外部液体源，再将通过外部温度调节设施或换热器18调温至所需温度的控温液体源19中液体，送入低压水池20，或直接将控温液体源19作为低压水池运行，进行下一次储能过程；When storing energy, the liquid piston 23 is filled with gas, and under the action of the hydroelectric power generation equipment 21, the liquid in the low-pressure pool 20 is sent into the liquid piston 23 to compress the gas to increase its air pressure. When it reaches the gas pressure in the high-pressure gas pipeline 1 When the valve 10 is opened, the compressed gas is sent into the gas storage tank 26 through the high-pressure gas pipeline 1 for storage; after the energy storage process is completed, the liquid in the liquid piston 23 is sent to the external liquid source under the action of the liquid driving device 2, and then the The liquid in the temperature-controlled liquid source 19 adjusted to the required temperature through the external temperature adjustment facility or heat exchanger 18 is sent to the low-pressure water pool 20, or the temperature-controlled liquid source 19 is directly operated as a low-pressure water pool for the next energy storage process ;
发电时，液体活塞23内充满液体，打开阀门10，储气罐26中的高压气体通过高压气体管道1进入液体活塞23中膨胀做功，推动液体通过水力发电设备21流出发电；发电过程结束后，在液体驱动装置2作用下将控温液体源19中液体送入液体活塞23中，液体活塞23内又充满液体，准备进行下一次发电过程。When generating electricity, the liquid piston 23 is filled with liquid, the valve 10 is opened, and the high-pressure gas in the gas storage tank 26 enters the liquid piston 23 through the high-pressure gas pipeline 1 to expand and perform work, pushing the liquid to flow out through the hydroelectric power generation equipment 21 to generate power; after the power generation process is completed, Under the action of the liquid driving device 2, the liquid in the temperature-controlling liquid source 19 is sent into the liquid piston 23, and the liquid piston 23 is filled with liquid again, ready for the next power generation process.
图2～3是基于内控温液体活塞对的系统实现的两种方案，其中图2是方案之一，其液体更换协调方法与储能发电过程串行工作，图3是方案之二，其液体更换协调方法与储能发电过程并行工作。Figures 2 to 3 are two schemes based on the system of the internal temperature control liquid piston pair, in which Figure 2 is one of the schemes, and its liquid replacement coordination method works in series with the energy storage and power generation process, and Figure 3 is the second scheme, which The liquid replacement coordination method works in parallel with the energy storage generation process.
图2系统由若干管道1～8，若干阀门9～14，液体驱动装置15～17，换热器18，控温液体源19，低压水池20，水力发电设备21，内控温液体活塞23、25，储气罐26组成；其中内控温液体活塞23、25分别与高压气体管道1及低压气体管道2相连，高压气体管道1与储气罐26相连，控温液体源19与内控温液体活塞23相连，低压水池20通过液体驱动装置15与液体活塞23相连，水力发电设备21通过管道7、8连接两个内控温液体活塞23、25以及电网。Fig. 2 system consists of several pipelines 1-8, several valves 9-14, liquid driving device 15-17, heat exchanger 18, temperature control liquid source 19, low-pressure water pool 20, hydroelectric power generation equipment 21, internal temperature control liquid piston 23, 25, consisting of a gas storage tank 26; wherein the internal temperature control liquid pistons 23 and 25 are connected to the high-pressure gas pipeline 1 and the low-pressure gas pipeline 2 respectively, the high-pressure gas pipeline 1 is connected to the gas storage tank 26, and the temperature control liquid source 19 is connected to the internal temperature control The liquid piston 23 is connected, the low-pressure pool 20 is connected with the liquid piston 23 through the liquid driving device 15, and the hydroelectric power generation equipment 21 is connected with two internal temperature control liquid pistons 23, 25 and the power grid through the pipelines 7, 8.
系统的液体更换协调方法与储能发电过程是串行工作运行方式，其具体过程为：The liquid replacement coordination method of the system and the energy storage and power generation process are in a serial operation mode, and the specific process is as follows:
储能时，液体活塞25内充满气体，液体活塞23充满液体，根据温度需要液体活塞23中的液体经过换液过程更换为所需温度液体，液体更换过程结束，然后在水力发电设备21的作用下将液体活塞23中的液体送入液体活塞25中压缩气体使其气压升高，当达到高压气体管道1中的气体气压时打开阀门12，将压缩气体通过高压气体管道1送入储气罐26中储存起来，此时液体活塞23内充满气体，液体活塞25内充满液体，如此反复上述储能过程可将电能源源不断转换为压缩空气势能储存起来。When storing energy, the liquid piston 25 is filled with gas, and the liquid piston 23 is filled with liquid. According to the temperature, the liquid in the liquid piston 23 is replaced with the required temperature liquid through the liquid replacement process. Next, send the liquid in the liquid piston 23 into the liquid piston 25 to compress the gas to increase its pressure, and when the gas pressure in the high-pressure gas pipeline 1 is reached, open the valve 12, and send the compressed gas into the gas storage tank through the high-pressure gas pipeline 1 26, and now the liquid piston 23 is full of gas, and the liquid piston 25 is full of liquid, so the above-mentioned energy storage process can be continuously converted into compressed air potential energy and stored.
发电时，液体活塞25内充满液体，液体活塞23充满气体，打开阀门12，储气罐26中的高压气体通过高压气体管道1进入液体活塞25中膨胀，推动液体通过水力发电设备21流出发电，发电过程结束后，根据温度需要经过换液过程使液体活塞23中更换为所需温度液体，此时液体活塞25内充满气体，液体活塞23充满液体，如此反复上述发电过程可将压缩空气的势能完全释放用于发电。When generating electricity, the liquid piston 25 is filled with liquid, the liquid piston 23 is filled with gas, the valve 12 is opened, the high-pressure gas in the gas storage tank 26 enters the liquid piston 25 through the high-pressure gas pipeline 1 and expands, and the liquid is pushed out through the hydroelectric power generation equipment 21 to generate electricity. After the power generation process is over, the liquid piston 23 is replaced with the required temperature liquid according to the temperature needs through the liquid replacement process. At this time, the liquid piston 25 is filled with gas, and the liquid piston 23 is filled with liquid. Repeating the above power generation process can reduce the potential energy of the compressed air. Fully released for power generation.
图3系统由若干管道1～8(包括管道3-1、3-2、7-1、7-2)，若干阀门9～14、34～35，液体驱动装置16～17，换热器18，控温液体源19，低压水池20，水力发电设备21，内控温液体活塞23、25，储气罐26组成；其中内控温液体活塞23、25分别与高压气体管道1及低压气体管道2相连，高压气体管道1与储气罐26相连，控温液体源19通过管道3-1、3-2、4与内控温液体活塞23、25相连，水力发电设备21通过管道7-1、7-2与液体活塞23、25连接，通过管道8与低压水池20以及电网连接。Fig. 3 system consists of several pipelines 1-8 (comprising pipelines 3-1, 3-2, 7-1, 7-2), several valves 9-14, 34-35, liquid driving devices 16-17, heat exchanger 18 , a temperature control liquid source 19, a low-pressure pool 20, a hydroelectric power generation device 21, an internal temperature control liquid piston 23,25, and a gas storage tank 26; wherein the internal temperature control liquid piston 23,25 is connected to the high-pressure gas pipeline 1 and the low-pressure gas pipeline respectively 2 are connected, the high-pressure gas pipeline 1 is connected with the gas storage tank 26, the temperature control liquid source 19 is connected with the internal temperature control liquid piston 23, 25 through the pipeline 3-1, 3-2, 4, and the hydroelectric power generation equipment 21 is connected through the pipeline 7-1 , 7-2 are connected with the liquid pistons 23, 25, and connected with the low-pressure pool 20 and the power grid through the pipeline 8.
系统的液体更换协调方法与储能发电过程是并行工作运行方式，其具体过程为：The liquid replacement coordination method of the system and the energy storage and power generation process work in parallel, and the specific process is as follows:
储能时，液体活塞25内充满气体，液体活塞23内充满液体，在水力发电设备21的作用下将控温液体源19中的液体送入液体活塞25中，压缩液体活塞25中的气体使其气压升高，当达到高压气体管道1中的气体气压时打开阀门12，将压缩气体通过高压气体管道1送入储气罐26中储存起来，同时在液体驱动装置2的作用下将液体活塞23中的液体排出，此时液体活塞25内充满液体，液体活塞23内充满气体，如此反复上述储能过程可将电能源源不断转换为压缩空气势能储存起来。During energy storage, the liquid piston 25 is filled with gas, and the liquid piston 23 is filled with liquid. Under the action of the hydroelectric power generation equipment 21, the liquid in the temperature-controlled liquid source 19 is sent into the liquid piston 25, and the gas in the compressed liquid piston 25 makes Its air pressure rises, and when the gas pressure in the high-pressure gas pipeline 1 is reached, the valve 12 is opened, and the compressed gas is sent into the gas storage tank 26 through the high-pressure gas pipeline 1 for storage, and at the same time, under the action of the liquid driving device 2, the liquid piston The liquid in 23 is discharged, and now the liquid piston 25 is full of liquid, and the liquid piston 23 is full of gas, so the above-mentioned energy storage process can be continuously converted into compressed air potential energy and stored.
发电时，液体活塞25内充满液体，液体活塞23内充满气体，打开阀门12，储气罐中的高压气体通过高压气体管道1进入液体活塞25中膨胀，推动液体通过水力发电设备21流出发电，同时在液体驱动装置2的作用下将控温液体源19中的液体送入液体活塞23中，此时液体活塞25内充满气体，液体活塞23内充满液体，如此反复上述发电过程可将压缩空气的势能完全释放用于发电。When generating electricity, the liquid piston 25 is filled with liquid, the liquid piston 23 is filled with gas, the valve 12 is opened, the high-pressure gas in the gas storage tank enters the liquid piston 25 through the high-pressure gas pipeline 1 and expands, and the liquid is pushed out through the hydroelectric power generation equipment 21 to generate electricity. At the same time, the liquid in the temperature-controlling liquid source 19 is sent into the liquid piston 23 under the action of the liquid driving device 2. At this time, the liquid piston 25 is full of gas, and the liquid piston 23 is full of liquid. Repeating the above-mentioned power generation process can compress the air The potential energy is completely released for power generation.
图4是水力发电设备的实现形式。当内控温液体活塞由单个液体活塞独立构成时，水力发电设备21通过管道7、8连接液体活塞23、低压水池20和电网，当内控温液体活塞由两个液体活塞成对或多个液体活塞成组组成时，在串行工作的情况下，水力发电设备21通过管道7、8连接两个内控温液体活塞23和25以及电网，在并行工作的情况下，水力发电设备21通过管道7(7-1、7-2)、8连接两个内控温液体活塞23和25、低压水池20以及电网。Fig. 4 is the realization form of the hydroelectric power generation equipment. When the internal temperature control liquid piston is composed of a single liquid piston independently, the hydroelectric power generation equipment 21 is connected to the liquid piston 23, the low-pressure pool 20 and the power grid through the pipelines 7 and 8; when the internal temperature control liquid piston is composed of two liquid pistons in pairs or multiple When the liquid pistons are formed in groups, in the case of serial work, the hydroelectric power generation equipment 21 connects the two internal temperature control liquid pistons 23 and 25 and the power grid through the pipelines 7 and 8, and in the case of parallel operation, the hydroelectric power generation equipment 21 passes Pipelines 7 (7-1, 7-2) and 8 are connected to two internal temperature control liquid pistons 23 and 25, a low-pressure pool 20 and a power grid.
图5～7是发电单元的三种实现形式。图5是直线发电机的形式，该形式包括液压活塞32、连杆33和直线发电机27，连杆33与直线发电机27之间进行能量传递。图6曲柄连接的旋转发电机的形式，该形式包括液压活塞32、连杆33和曲柄连接的旋转发电机28，连杆33与曲柄连接的旋转发电机28之间进行能量传递。图7是抽蓄发电单元的形式，该形式包括液压活塞组32、连杆33、水力设备29、高压水池30和低压水池31。储能时，水力设备29消耗电能，将低压水池31中的液体抽到高压水池30中，并利用高低压水池的势能差驱动液压活塞组32，将能量转化成连杆33的机械能；发电时将连杆33上的机械能转化成液压势能，将低压水池31的液体抽到高压水池30，然后利用高低压水池的势能差驱动水力设备29发电。Figures 5 to 7 show three implementation forms of the power generation unit. Fig. 5 is a form of a linear generator, which includes a hydraulic piston 32, a connecting rod 33 and a linear generator 27, and energy transmission is performed between the connecting rod 33 and the linear generator 27. Fig. 6 is the form of a crank-connected rotary generator, which includes a hydraulic piston 32, a connecting rod 33 and a crank-connected rotary generator 28, and energy transmission is performed between the connecting rod 33 and the crank-connected rotary generator 28. FIG. 7 is a pump-storage generating unit, which includes a hydraulic piston group 32 , a connecting rod 33 , hydraulic equipment 29 , a high-pressure pool 30 and a low-pressure pool 31 . When storing energy, the hydraulic equipment 29 consumes electric energy, pumps the liquid in the low-pressure pool 31 into the high-pressure pool 30, and utilizes the potential energy difference between the high and low pressure pools to drive the hydraulic piston group 32 to convert the energy into mechanical energy of the connecting rod 33; The mechanical energy on the connecting rod 33 is converted into hydraulic potential energy, the liquid in the low pressure pool 31 is pumped to the high pressure pool 30, and then the hydraulic equipment 29 is driven to generate electricity by using the potential energy difference between the high and low pressure pools.
液体驱动装置17根据不同的运行模式，将对应温度的控温液体源的液体送入内控温液体活塞23或25中。其中工作运行模式有以下四种模式：The liquid driving device 17 sends the liquid from the temperature-controlling liquid source corresponding to the temperature into the internal temperature-controlling liquid piston 23 or 25 according to different operating modes. Among them, there are four working modes:
第一种为开放式直供运行模式，用于工作的液体温度近似不变，控温液体源为唯一的液体来源且为开放式，水源足够大，如海洋、水库等；The first is the open direct supply operation mode, the temperature of the liquid used for work is approximately constant, the temperature control liquid source is the only liquid source and is open, and the water source is large enough, such as oceans, reservoirs, etc.;
第二种为密闭式直供运行模式，控温液体源为唯一的液体来源且为保温密闭式，储能时，液体送入内控温液体活塞腔中，气体压缩所产生的热量传递给液体，这部分液体在升温后被绝热储存起来；发电时，这部分液体送入内控温液体活塞在气体膨胀过程中提供热量，发电结束后，该部分液体又被绝热储存起来；如此反复循环利用；The second is the closed direct supply operation mode. The temperature control liquid source is the only liquid source and is heat preservation and closed. When storing energy, the liquid is sent into the internal temperature control liquid piston chamber, and the heat generated by gas compression is transferred to the liquid. , this part of the liquid is stored adiabatically after heating up; during power generation, this part of the liquid is sent to the internal temperature control liquid piston to provide heat during the gas expansion process, and after the power generation is over, this part of the liquid is stored adiabatically again; so repeated recycling ;
第三种为余热利用模式，控温液体源分成两种温度差异明显的液体源，储能时选择温度较高的液体源，往内控温液体活塞腔中送入温度较高的液体，气体压缩所产生的热量传递给液体，使液体温度进一步升高，利用高温液体实现供热供暖；发电时选择温度较低的液体源，往内控温液体活塞腔中送入温度较低的液体，压缩空气膨胀从液体中吸热，实现低品质热量利用，在此过程中气体和液体温度都会降低，可用于制冷；The third is the waste heat utilization mode. The temperature-controlled liquid source is divided into two liquid sources with obvious temperature differences. When storing energy, the liquid source with a higher temperature is selected, and the liquid with a higher temperature and the gas with a higher temperature are sent into the internal temperature-controlled liquid piston cavity. The heat generated by the compression is transferred to the liquid to further increase the temperature of the liquid, and the high-temperature liquid is used to realize heating and heating; when generating electricity, a liquid source with a lower temperature is selected, and the liquid with a lower temperature is sent into the internal temperature control liquid piston cavity, Compressed air expands to absorb heat from the liquid, enabling low-quality heat utilization, during which both the gas and liquid temperatures are lowered and can be used for refrigeration;
第四种为高效发电模式，控温液体源分成两种温度差异明显的液体源，储能时选择温度较低的液体源，低温液体被送入内控温液体活塞中，气体的热量被低温液体吸收，使气体温度和气体压强降低，减少气体压缩所用的能量；发电时选择温度较高的液体源，高温液体被送入内控温液体活塞中，气体吸收高温液体的热量，使气体温度和气体压强升高，以实现更高的能量输出。The fourth is the high-efficiency power generation mode. The temperature-controlled liquid source is divided into two liquid sources with obvious temperature differences. When storing energy, the liquid source with a lower temperature is selected. Liquid absorption reduces the gas temperature and gas pressure, and reduces the energy used for gas compression; when generating electricity, select a liquid source with a higher temperature, and the high-temperature liquid is sent to the internal temperature-controlled liquid piston, and the gas absorbs the heat of the high-temperature liquid to reduce the gas temperature. And gas pressure increases to achieve higher energy output.
此实施例仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。This embodiment is only a preferred specific implementation of the present invention, but the scope of protection of the present invention is not limited thereto, any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention , should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610608912.6A CN106321343B (en) | 2016-07-28 | 2016-07-28 | Isotherm compression air energy storage power generation and its method based on fluid temperature control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610608912.6A CN106321343B (en) | 2016-07-28 | 2016-07-28 | Isotherm compression air energy storage power generation and its method based on fluid temperature control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106321343A CN106321343A (en) | 2017-01-11 |
| CN106321343B true CN106321343B (en) | 2018-11-09 |
Family
ID=57739491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610608912.6A Active CN106321343B (en) | 2016-07-28 | 2016-07-28 | Isotherm compression air energy storage power generation and its method based on fluid temperature control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106321343B (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870259B (en) * | 2017-02-22 | 2020-02-21 | 华北电力大学 | A two-stage energy storage system based on constant pressure gas storage |
| CN107939653B (en) * | 2017-10-19 | 2019-07-12 | 华北电力大学 | A zero-power compressed air iso-density temperature-variable migration device and operation method |
| CN107676216B (en) * | 2017-11-17 | 2019-10-11 | 华北电力大学 | Change the system and method that head adjusts the pumped storage power of the assembling unit by compressed air |
| CN108050026B (en) * | 2017-12-06 | 2021-02-09 | 华北电力大学 | A combined operation device of a solar thermal power station and a compressed air energy storage unit and a control method thereof |
| CN108224323A (en) * | 2017-12-17 | 2018-06-29 | 江西烈日之光新能源有限公司 | A kind of Solar Street Lighting System |
| CN108235534A (en) * | 2017-12-17 | 2018-06-29 | 江西烈日之光新能源有限公司 | A kind of highway solar road lamp system |
| CN108487950B (en) * | 2018-01-31 | 2020-06-09 | 华北电力大学 | Isothermal compressed air energy storage preposed heat insulation hair increasing device |
| CN108457703B (en) * | 2018-02-08 | 2020-06-09 | 华北电力大学 | Compressed air energy storage system based on linear generator and control method thereof |
| CN108317104B (en) * | 2018-02-22 | 2024-04-12 | 蒋祖伦 | Artificial regenerated energy gas-liquid circulation water pumping power generation system |
| CN108425824A (en) * | 2018-03-28 | 2018-08-21 | 天津融渌众乐科技有限公司 | A kind of mysterious conjugation pumping system of temperature difference driving |
| CN111238919B (en) * | 2020-02-25 | 2021-02-19 | 蓝箭航天空间科技股份有限公司 | Double-medium pressure test device |
| CN111706414B (en) * | 2020-06-09 | 2021-07-13 | 西安交通大学 | Quasi-isobaric discharge isothermal compression energy storage system and method using condensable gas phase transition |
| CN112901458B (en) * | 2021-01-12 | 2022-04-22 | 西安交通大学 | An isothermal compressed air energy storage system and method with zero clearance volume |
| CN115189394A (en) * | 2022-06-09 | 2022-10-14 | 国网浙江省电力有限公司宁波供电公司 | Hydrogen-electric coupling and solar thermal power generation combined operation system and control method |
| CN115207397A (en) * | 2022-09-08 | 2022-10-18 | 国网浙江省电力有限公司宁波供电公司 | Hydrogen fuel cell and compressed air energy storage combined operation system and control method thereof |
| CN115224305A (en) * | 2022-09-14 | 2022-10-21 | 国网浙江省电力有限公司宁波供电公司 | Hydrogen fuel cell power generation system and control method thereof |
| WO2024098960A1 (en) * | 2022-11-11 | 2024-05-16 | 任文林 | Energy-consumption-free water-pumping generator, and manufacturing method therefor and application thereof |
| CN116085171B (en) * | 2022-12-28 | 2025-07-29 | 中国电建集团华东勘测设计研究院有限公司 | Double-hole type pumping compressed air energy storage system |
| CN115977927B (en) * | 2023-02-16 | 2025-07-08 | 西安热工研究院有限公司 | Air-water grading isothermal compressed air energy storage system |
| CN116412106B (en) * | 2023-04-28 | 2025-07-29 | 中国三峡新能源(集团)股份有限公司 | Multimode integrated energy storage system |
| CN116877220B (en) * | 2023-09-04 | 2023-11-07 | 九州绿能科技股份有限公司 | Liquid-pumping energy-storage power generation system and energy-storage power generation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0568742A1 (en) * | 1992-05-08 | 1993-11-10 | Cooper Industries, Inc. | Transfer of production fluid from a well |
| CN102498638A (en) * | 2009-04-03 | 2012-06-13 | 瑟斯特克斯有限公司 | Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression |
| CN103161774A (en) * | 2013-03-12 | 2013-06-19 | 华北电力大学 | Liquid piston device with isothermy scaling of air achievable and with temperature controlled inside |
| CN104653423A (en) * | 2015-01-27 | 2015-05-27 | 华北电力大学 | Air compression energy storage and thermal power plant-based joint control system and method |
| CN105201926A (en) * | 2015-09-11 | 2015-12-30 | 华北电力大学 | Internal temperature control liquid piston device capable of isothermally compressing and releasing air on basis of air storage units |
-
2016
- 2016-07-28 CN CN201610608912.6A patent/CN106321343B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0568742A1 (en) * | 1992-05-08 | 1993-11-10 | Cooper Industries, Inc. | Transfer of production fluid from a well |
| CN102498638A (en) * | 2009-04-03 | 2012-06-13 | 瑟斯特克斯有限公司 | Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression |
| CN103161774A (en) * | 2013-03-12 | 2013-06-19 | 华北电力大学 | Liquid piston device with isothermy scaling of air achievable and with temperature controlled inside |
| CN104653423A (en) * | 2015-01-27 | 2015-05-27 | 华北电力大学 | Air compression energy storage and thermal power plant-based joint control system and method |
| CN105201926A (en) * | 2015-09-11 | 2015-12-30 | 华北电力大学 | Internal temperature control liquid piston device capable of isothermally compressing and releasing air on basis of air storage units |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106321343A (en) | 2017-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106321343B (en) | Isotherm compression air energy storage power generation and its method based on fluid temperature control | |
| CN110206599B (en) | Combined cooling, heating and power system | |
| CN110578567B (en) | Compressed air constant-pressure energy storage power generation system utilizing working medium phase change | |
| CN113006889B (en) | Adiabatic near-isothermal compressed air energy storage system and operation method thereof | |
| CN203257492U (en) | Compressed air electric power energy storage system | |
| Li et al. | Compressed air energy storage for offshore wind turbines | |
| CN102839995B (en) | Isothermal-isobaric compressed air energy storage system | |
| CN112554984B (en) | A constant pressure pumped compressed air energy storage system with heat storage and its operation method | |
| CN112524001A (en) | Heat pump electricity storage system based on transcritical Rankine cycle | |
| CN210441302U (en) | Combined cooling, heating and power system | |
| CN106677969A (en) | Energy storage device | |
| CN108050026B (en) | A combined operation device of a solar thermal power station and a compressed air energy storage unit and a control method thereof | |
| CN116031913B (en) | A wind power consumption and energy storage system based on Carnot battery energy storage technology | |
| CN114622960A (en) | Transcritical carbon dioxide energy storage system | |
| CN105736056A (en) | Liquid air energy storage system | |
| JP3246982U (en) | Onshore wind power generation unit with compressed air storage system | |
| CN108731303A (en) | Heat-pump-type replaces energy storage for power supply method and device | |
| CN108075686B (en) | Utilize the system and its electricity-generating method of liquid temperature differential power generation | |
| CN201539373U (en) | Geothermal or solar thermoelectric engine device | |
| CN112901431B (en) | Near-isothermal compressed air energy storage system and operation method thereof | |
| CN107559161B (en) | A thermoelectric system combining chemical heat storage and seawater power generation | |
| CN105569754B (en) | Method for doing work externally by utilizing environmental heat energy and environmental heat energy doing work system | |
| CN104675763B (en) | Compressed air energy storage device with heating function and method for operating compressed air energy storage device | |
| JP2021032252A (en) | Power generation device, system, and method | |
| CN206942822U (en) | A device that uses ambient heat to do work |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |