CN111963333B - Energy accumulator and energy-saving system utilizing waste heat of engine tail gas - Google Patents
Energy accumulator and energy-saving system utilizing waste heat of engine tail gas Download PDFInfo
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- CN111963333B CN111963333B CN202010985676.6A CN202010985676A CN111963333B CN 111963333 B CN111963333 B CN 111963333B CN 202010985676 A CN202010985676 A CN 202010985676A CN 111963333 B CN111963333 B CN 111963333B
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- 239000007789 gas Substances 0.000 title claims abstract description 65
- 239000002918 waste heat Substances 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 230000017525 heat dissipation Effects 0.000 claims abstract description 19
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 18
- 238000004146 energy storage Methods 0.000 description 7
- 238000009413 insulation Methods 0.000 description 4
- 239000012774 insulation material Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
- F02G5/02—Profiting from waste heat of exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Exhaust Silencers (AREA)
Abstract
An energy accumulator and an energy-saving system utilizing waste heat of engine tail gas, a stepped cavity is arranged in a cylinder barrel, and an upper end cover and a lower end cover are fixedly connected at two ends of the cylinder barrel; the stepped cavity consists of a small-diameter section and a large-diameter section; the piston assembly is assembled in the large-diameter section and divides the stepped cavity into a gas storage cavity and an oil storage cavity; the heat dissipation assembly consists of a second pipeline, a third pipeline and a first pipeline, the inner diameters of the heat dissipation assembly are sequentially reduced and are sequentially coaxially arranged from outside to inside, and the upper ends of the second pipeline and the first pipeline are fixedly connected with the upper end cover; the lower end of the third pipeline is fixedly connected with the upper end of the piston assembly through a fixing plate, and the outer side of the upper end of the third pipeline is sleeved with a sealing ring; the lower end cover is provided with an oil port; the upper end cover is provided with an air inlet at the part corresponding to the first pipeline, an air outlet at the part corresponding to the space between the second pipeline and the first pipeline, and an inflation inlet at the part corresponding to the periphery of the second pipeline. The energy accumulator body is connected with the exhaust pipeline through a reversing valve and a one-way valve. The energy accumulator can improve the working efficiency, and the system has good energy-saving and environment-friendly effects.
Description
Technical Field
The invention belongs to the technical field of hydraulic energy storage, and particularly relates to an energy accumulator and an energy-saving system utilizing waste heat of engine tail gas.
Background
An accumulator is an energy storage device in a hydraulic system. The energy accumulator converts the energy in the system into pressure energy or potential energy at a proper time and stores the pressure energy or the potential energy; when the system needs, the energy accumulator can convert the pressure energy or potential energy into hydraulic energy to release and supply the hydraulic energy to the system again. The energy accumulator can be classified into a gravity type, a spring type, an inflatable type and the like according to different energy utilization forms. Among them, the gas-filled accumulator is the most commonly used one.
Fig. 1 shows a schematic diagram of the operation of a conventional gas-filled accumulator. Assume that the accumulator operates at point 1 in fig. 1 before charging. The energy accumulator corresponds to point 1 to point 2 in fig. 1 during the energy storage process. The oil flows into the accumulator chamber, compressing the volume of the gas while the pressure increases, accompanied by an increase in the temperature of the gas. In the short time of the process, the heat of the gas in the accumulator cannot be dissipated quickly, so its temperature will be significantly higher than the external ambient temperature. After the energy storage process is completed, the energy accumulator enters a pressure maintaining state. Since the temperature of the gas in the accumulator is higher than the ambient temperature and the housing of the accumulator cannot be insulated, part of the heat will be dissipated to the external environment, which will cause a drop in the gas pressure, which corresponds to point 2 to point 3 in fig. 1. When the accumulator releases energy, refer to the process from point 3 to point 4 in fig. 1. In the process, oil in the energy accumulator flows out, the volume of gas is increased, the pressure is reduced, and the heat absorption process is also carried out. When the time for this process is short, the gas in the accumulator cannot quickly gain heat from the environment and its temperature drops significantly. The gas temperature in the accumulator will be lower than the ambient temperature, taking into account the loss of part of the heat during the pressure holding process described above. Therefore, when the accumulator discharges all the oil absorbed in the energy storage process, the gas pressure of the accumulator is lower than the initial pressure. The ambient heat will then be transferred through the housing to the gas in the accumulator, the pressure of which will rise back. From the above working process, the gas temperature of the accumulator will increase inevitably during the energy storage process. The housing of the accumulator is not thermally insulated, so that heat losses are unavoidable. In any case, heat losses from the accumulator are inevitable, which results in a reduction in the efficiency of the accumulator during operation. In the prior art, no effective technical means can solve the problem, so that the working efficiency of the energy accumulator cannot be effectively guaranteed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an energy accumulator and an energy-saving system utilizing the waste heat of the tail gas of an engine, the energy accumulator can solve the problem of low working efficiency of the energy accumulator caused by heat loss, and meanwhile, the system can effectively reduce the influence of the tail gas exhaust on the environment and improve the working efficiency of the energy accumulator.
In order to achieve the purpose, the invention provides an energy accumulator utilizing waste heat of engine tail gas, which comprises an energy accumulator body; the energy accumulator body comprises a cylinder barrel, a piston assembly and a heat dissipation assembly;
a stepped cavity extending axially is formed in the cylinder barrel, and an upper end cover and a lower end cover are fixedly connected to two ends of the stepped cavity respectively; the stepped cavity consists of a small-diameter section positioned at the upper part and a large-diameter section positioned at the lower part;
the size of the piston assembly is matched with that of the large-diameter section, and the piston assembly is assembled in the large-diameter section in a sliding and sealing mode; the piston assembly divides the stepped cavity into a gas storage cavity at the upper part and a oil storage cavity at the lower part;
the heat dissipation assembly consists of a second pipeline, a third pipeline and a first pipeline and is arranged inside the stepped cavity; the lengths of the second pipeline, the third pipeline and the first pipeline are all smaller than the height of the small-diameter section, the inner diameters of the second pipeline, the third pipeline and the first pipeline are sequentially reduced and are coaxially arranged from outside to inside, the upper ends of the second pipeline and the first pipeline are fixedly connected with the lower end face of the upper end cover, and the lower ends of the second pipeline and the first pipeline are all stopped at the position close to the upper end of the large-diameter section; the lower end of the third pipeline is fixedly connected with the center of the upper end face of the piston assembly through a fixing plate, the outer side of the upper end of the third pipeline is fixedly sleeved with a sealing ring, and the outer circular surface of the sealing ring is in sliding sealing fit with the inner cavity of the second pipeline;
An oil port communicated with the oil storage cavity is formed in the lower end cover; the upper end cover is provided with an air inlet penetrating in the thickness direction at the part corresponding to the inner cavity of the first pipeline, an air outlet penetrating in the thickness direction is arranged at the part corresponding to the annular cavity between the second pipeline and the first pipeline, and an inflation inlet penetrating in the thickness direction is arranged at the part corresponding to the periphery of the second pipeline.
In this scheme, the upper end that makes second and first pipeline in the radiator unit all with upper end cover fixed connection, the lower extreme and the piston assembly fixed connection of third pipeline, and simultaneously, the inside wall sliding seal cooperation that the sealing ring passes through with the second pipeline is passed through to the upper end that makes the third pipeline, and like this, at the in-process that the piston assembly carries out oil storage and oil discharge along axial displacement, the change of adaptability all can be made to radiator unit's length, thereby make heat dissipation channel exist always, alright carry out the heat exchange with the gas in utilizing outside heat source and the energy storage ware all the time. Through the setting of the air inlet communicated with the inner cavity of the first pipeline, external heat sources such as automobile exhaust can be conveniently charged into the heat dissipation channel in the heat dissipation assembly, and through the arrangement of the air outlet communicated with the first pipeline and the second pipeline, the heat sources entering the heat dissipation channel can be conveniently discharged, so that the smooth proceeding of the heat exchange process can be ensured. Make the lower extreme of first and second pipeline all end in the position that is close to big footpath section upper end, can make outside heat source arrive the end of first pipeline along the length direction of first pipeline earlier, by the terminal head end of reaching the third boat pipeline upwards of first pipeline again, discharge by the gas vent again, this kind of mode of walking gas can not only effectual extension heat exchange time, enables the heat source fully to act on whole gas storage chamber moreover to can effectually guarantee the efficiency and the effect of heat exchange. The energy accumulator can fully utilize the external heat source to exchange heat with the gas in the energy accumulator by arranging the heat dissipation assembly, thereby effectively reducing the heat loss of the energy accumulator and further effectively improving the working efficiency of the energy accumulator.
Furthermore, in order to improve the sealing effect, an annular groove is formed in the outer circular surface of the sealing ring, and the sealing ring is assembled in the annular groove.
Further, in order to avoid the influence of heat exchange on the temperature of the oil liquid in the oil storage cavity, a heat insulation pad made of heat insulation materials is arranged between the fixed plate and the piston assembly.
Further, in order to reduce heat dissipation, the outer surface of the cylinder barrel is sleeved with a heat insulation sleeve made of heat insulation materials.
Further, in order to facilitate inflation, an inflation valve assembly is fixedly connected to the upper end cover at the inflation opening.
The invention provides an energy-saving system utilizing waste heat of engine tail gas, which comprises an energy accumulator body, an exhaust pipeline, a one-way valve and a reversing valve, wherein the exhaust pipeline is connected with an engine; the one-way valve is connected in series on the exhaust pipeline and isolates the exhaust pipeline into an upstream section and a downstream section, and an air inlet and an air outlet of the one-way valve are respectively close to the upstream section and the downstream section; the port P of the reversing valve is connected with the upstream section of the exhaust pipeline through a pipeline, the port A of the reversing valve is connected with the air inlet of the energy accumulator body through a pipeline, and the air outlet of the energy accumulator body is connected with the downstream section of the exhaust pipeline through a pipeline.
Preferably, the reversing valve is a two-position two-way electromagnetic reversing valve which works at an upper position when power is on and works at a lower position when power is off; when working at the upper position, the port P is communicated with the port A, and when working at the lower position, the port P is disconnected with the port A.
The system makes up the heat loss of the energy accumulator by transferring the waste heat of the tail gas of the engine to the gas in the energy accumulator, so that the energy accumulator can emit more energy in the energy release process, and the working efficiency of the energy accumulator is effectively improved. Meanwhile, the waste heat of the tail gas of the engine is prevented from directly dissipating to the atmosphere, the waste heat of the tail gas of the engine is recycled, and the influence of the tail gas emission of the engine on the environment is reduced.
Drawings
FIG. 1 is a schematic diagram of a prior art accumulator duty cycle;
FIG. 2 is a schematic view of the construction of the accumulator body according to the present invention;
FIG. 3 is a graphical symbol of the accumulator of the present invention;
fig. 4 is a hydraulic schematic of the economizer system of the present invention.
In the figure: 1. the energy accumulator comprises an energy accumulator body, 101, a cylinder barrel, 102, an air charging hole, 103, an oil port, 104, an air inlet, 105, an air outlet, 106, an oil storage cavity, 107, an air storage cavity, 110, an upper end cover, 120, a lower end cover, 2, a piston assembly, 3, a first pipeline, 4, a second pipeline, 5, a third pipeline, 501, a sealing ring, 502, a fixing plate, 504, a sealing ring, 6, a step cavity, 7, a one-way valve, 8, a reversing valve, 9, an air exhaust pipeline, 10, a large-diameter section, 11 and a small-diameter section.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 2, an energy accumulator using waste heat of engine exhaust comprises an energy accumulator body 1; the energy accumulator body 1 comprises a cylinder 101, a piston assembly 2 and a heat dissipation assembly;
a stepped cavity 6 extending axially is formed inside the cylinder barrel 101, and an upper end cover 110 and a lower end cover 120 are fixedly connected to two ends of the stepped cavity 6 respectively; the stepped cavity 6 is composed of a small diameter section 11 located at the upper part and a large diameter section 10 located at the lower part, and the inner wall of the stepped cavity 6 is smooth.
The piston assembly 2 is a disc-shaped assembly, the size of the disc-shaped assembly is matched with that of the large-diameter section 10, the disc-shaped assembly is assembled in the large-diameter section 10 in a sliding and sealing mode, and the piston assembly 2 can slide along the axial direction of the stepped cavity 6; the piston assembly 2 performs stroke limitation through the lower end cover 120 and the lower end of the small-diameter section 11; the piston assembly 2 divides the stepped chamber 6 into an air storage chamber 107 located at the upper portion and an oil storage chamber 106 located at the lower portion;
the heat dissipation assembly consists of a second pipeline 4, a third pipeline 5 and a first pipeline 3 and is arranged inside the stepped cavity 6; the second pipeline 4, the third pipeline 5 and the first pipeline 3 are all made of materials which have good heat dissipation performance and certain strength; the lengths of the second pipeline 4, the third pipeline 5 and the first pipeline 3 are all smaller than the height of the small-diameter section 11, the inner diameters of the second pipeline 4, the third pipeline 5 and the first pipeline 3 are sequentially reduced and coaxially arranged from outside to inside, the upper ends of the second pipeline 4 and the first pipeline 3 are fixedly connected with the lower end face of the upper end cover 110, and the lower ends of the second pipeline 4 and the first pipeline 3 are all stopped at positions close to the upper end of the large-diameter section 10; the lower end of the third pipeline 5 is fixedly connected with the center of the upper end face of the piston assembly 2 through a fixing plate 502, the outer side of the upper end of the third pipeline is fixedly sleeved with a sealing ring 501, the outer circular surface of the sealing ring 501 is in sliding sealing fit with the inner cavity of the second pipeline 4, and an annular air outlet channel is reserved between the inner side wall of the third pipeline 5 and the outer side wall of the first pipeline 3; when the piston assembly 2 moves to the bottom of the large diameter section 10, the sealing ring 501 is located above the lower end of the second pipe 4; when the piston assembly 2 moves to the top of the large-diameter section 10, a gap is left between the sealing ring 501 and the lower end face of the upper end cover 110; the fixing plate 502 may be fixedly connected with the piston assembly 2 by screws;
This heat sink assembly, only one set of which is shown in fig. 2 and placed at the axis of the accumulator, avoids failure due to rotation of the piston assembly 2 during its movement. Of course, the heat dissipation assembly can be provided with a plurality of groups.
The lower end cover 120 is provided with an oil port 103 communicated with the oil storage cavity 106; the upper end cap 110 is provided with an air inlet 104 penetrating through the thickness direction at a portion corresponding to the inner cavity of the first pipeline 3, an air outlet 105 penetrating through the thickness direction at a portion corresponding to the annular cavity between the second pipeline 4 and the first pipeline 3, and an air charging port 102 penetrating through the thickness direction at a portion corresponding to the periphery of the second pipeline 4.
In order to improve the sealing effect, an annular groove is formed on the outer circumferential surface of the sealing ring 501, and the sealing ring 504 is assembled in the annular groove.
In order to avoid the influence of heat exchange on the temperature of the oil in the oil storage chamber, a heat insulation pad made of heat insulation material is disposed between the fixing plate 502 and the piston assembly 2.
In order to reduce the heat dissipation, the outer surface of the cylinder 101 is covered with a heat insulation sleeve made of heat insulation material.
To facilitate inflation, an inflation valve assembly is fixedly attached to the upper end cap 110 at the inflation port 102.
As shown in fig. 3 and 4, the invention provides an energy saving system using waste heat of engine exhaust, which comprises an energy accumulator body 1, an exhaust pipeline 9, a one-way valve 7 and a reversing valve 8, wherein the exhaust pipeline 9 is an exhaust pipeline connected with an engine, the engine can be a diesel engine which is a power source widely used by engineering mechanical equipment, and the exhaust of the engine has high temperature; the check valve 7 is connected in series on the exhaust pipeline 9 and separates the exhaust pipeline 9 into an upstream section and a downstream section, and an air inlet and an air outlet of the check valve 7 are respectively close to the upstream section and the downstream section; the port P of the reversing valve 8 is connected with the upstream section of the exhaust pipeline 9 through a pipeline, the port A of the reversing valve 8 is connected with the air inlet 104 of the energy accumulator body 1 through a pipeline, and the air outlet 105 of the energy accumulator body 1 is connected with the downstream section of the exhaust pipeline 9 through a pipeline.
Preferably, the reversing valve 8 is a two-position two-way electromagnetic reversing valve, and works in an upper position when power is on and works in a lower position when power is off; when working at the upper position, the port P is communicated with the port A, and when working at the lower position, the port P is disconnected with the port A.
Figure 3 gives a graphical symbol of the accumulator. Similar to a conventional accumulator, port P represents an oil port for the ingress and egress of oil. In the air storage chamber 107, a heat dissipation pipeline connected with the outside is added, and the ports a and B are the aforementioned air inlet 104 and air outlet 105, respectively. In principle, the two ports may be interchanged in operation.
As an improvement, a temperature detection device for detecting a temperature signal may be additionally disposed in the gas storage chamber 107, the temperature detection device is connected to an external controller, and an air inlet pipeline is connected to the air inlet 104, and an electromagnetic switch valve is disposed on the air inlet pipeline. The temperature detection device sends the detected temperature signal to the controller in real time, the controller obtains a temperature value according to the received temperature signal, and after the temperature of the gas storage cavity 107 reaches a certain value, the controller controls the electromagnetic switch valve to be closed, so that the high-pressure gas of the gas storage cavity 107 stops being heated, and the actual use process of the energy accumulator body can be further facilitated.
Working principle of the energy accumulator:
when the heat in the accumulator is lost, exhaust from the engine is vented to the air inlet 104 of the accumulator. The exhaust gas flows into the third pipe 5 through the inner hole of the first pipe 3, then flows into the second pipe 4, and finally flows out through the exhaust port 105. Because the temperature of the engine exhaust is higher than the temperature of the gas in the gas storage chamber 107 of the accumulator, part of the heat will be transferred to the gas in the gas storage chamber 107 during the exhaust gas circulation process, raising its temperature. The temperature of the gas in the gas storage cavity 107 can be controlled by reasonably controlling the flow of the introduced tail gas.
In the actual use process, if high-temperature exhaust gas is not available, hot water or other fluids can be introduced into the heat dissipation assembly consisting of the first pipeline 3, the second pipeline 4 and the third pipeline 5. This may also produce a similar effect.
The working principle of the energy-saving system is as follows:
when in use, according to the principle of fig. 4, the air inlet 104 and the air outlet 105 of the energy accumulator of the technical scheme are connected to an exhaust system of an engine, and the oil port 103 is connected with a working oil circuit of a hydraulic system.
When the accumulator charging process is finished, the temperature of the gas in the gas storage chamber 107 can be obtained. And opening the reversing valve 8, enabling tail gas of the engine to flow out from the exhaust pipeline 9 of the engine to the port A through the port P of the reversing valve 8, and enabling the tail gas of the energy accumulator to flow out from the port A to the port B of the energy accumulator and to flow into the exhaust pipeline 9 of the engine again. The flow of the tail gas introduced into the accumulator is reasonably controlled, so that the gas in the gas storage cavity 107 of the accumulator can be controlled to maintain an ideal temperature. When the accumulator discharges oil, the oil discharge curve 3-4 is closer to the oil storage curve 1-2 and can even coincide with the oil storage curve 1-2 in combination with the graph 1, namely the area of the area enclosed by the oil discharge curve 1-2-3-4 is smaller or even zero. And the area of the region enclosed by 1-2-3-4 represents the loss of energy. The area of the area is smaller, which shows that the energy accumulator in the technical scheme can release more energy of the conventional energy accumulator, and the working efficiency of the energy accumulator is improved. The source of this energy is engine exhaust, which is wasted. The energy-saving system realizes certain recycling of the waste heat of the tail gas of the engine, and reduces the influence of the tail gas emission of the engine on the environment.
Claims (7)
1. An energy accumulator utilizing waste heat of engine tail gas comprises an energy accumulator body (1); the energy accumulator body (1) comprises a cylinder barrel (101), and is characterized in that the energy accumulator body (1) further comprises a piston assembly (2) and a heat dissipation assembly;
a stepped cavity (6) extending axially is formed in the cylinder barrel (101), and an upper end cover (110) and a lower end cover (120) are fixedly connected to two ends of the stepped cavity (6) respectively; the stepped cavity (6) consists of a small-diameter section (11) positioned at the upper part and a large-diameter section (10) positioned at the lower part;
the size of the piston assembly (2) is matched with that of the large-diameter section (10), and the piston assembly is assembled in the large-diameter section (10) in a sliding and sealing mode; the piston assembly (2) divides the stepped cavity (6) into an air storage cavity (107) at the upper part and an oil storage cavity (106) at the lower part;
the heat dissipation assembly consists of a second pipeline (4), a third pipeline (5) and a first pipeline (3), and is arranged inside the stepped cavity (6); the lengths of the second pipeline (4), the third pipeline (5) and the first pipeline (3) are all smaller than the height of the small-diameter section (11), the inner diameters of the second pipeline (4), the third pipeline (5) and the first pipeline (3) are sequentially reduced and coaxially arranged from outside to inside, the upper ends of the second pipeline (4) and the first pipeline (3) are fixedly connected with the lower end face of the upper end cover (110), and the lower ends of the second pipeline (4) and the first pipeline (3) are all stopped at positions close to the upper end of the large-diameter section (10); the lower end of the third pipeline (5) is fixedly connected with the center of the upper end face of the piston assembly (2) through a fixing plate (502), a sealing ring (501) is fixedly sleeved on the outer side of the upper end of the third pipeline, and the outer circular surface of the sealing ring (501) is in sliding sealing fit with the inner cavity of the second pipeline (4);
An oil port (103) communicated with the oil storage cavity (106) is formed in the lower end cover (120); the upper end cover (110) is provided with an air inlet (104) penetrating through the thickness direction at the part corresponding to the inner cavity of the first pipeline (3), an air outlet (105) penetrating through the thickness direction at the part corresponding to the annular cavity between the second pipeline (4) and the first pipeline (3), and an inflation inlet (102) penetrating through the thickness direction at the part corresponding to the periphery of the second pipeline (4);
the tail gas of the engine is introduced into the air inlet (104), flows into the third pipeline (5) through the inner hole of the first pipeline (3), then flows into the second pipeline (4), and finally flows out through the air outlet (105).
2. The energy accumulator using waste heat of engine exhaust gas as claimed in claim 1, wherein an annular groove is formed on an outer circumferential surface of the sealing ring (501), and the sealing ring (504) is assembled in the annular groove.
3. An accumulator using the residual heat of engine exhaust gases according to claim 1 or 2, characterized in that a heat insulating pad made of heat insulating material is arranged between the fixed plate (502) and the piston assembly (2).
4. The energy accumulator using the waste heat of the engine exhaust gas as claimed in claim 3, wherein the outer surface of the cylinder (101) is sleeved with a heat insulating sleeve made of heat insulating material.
5. The accumulator utilizing the waste heat of the exhaust gas of the engine as claimed in claim 1 or 2, wherein a charging valve assembly is fixedly connected to the upper end cover (110) at the charging port (102).
6. An energy-saving system utilizing waste heat of engine tail gas comprises an energy accumulator body (1), and is characterized by further comprising an exhaust pipeline (9), a one-way valve (7) and a reversing valve (8), wherein the exhaust pipeline (9) is connected with an engine; the check valve (7) is connected in series with the exhaust pipeline (9) and separates the exhaust pipeline (9) into an upstream section and a downstream section, and an air inlet and an air outlet of the check valve (7) are respectively close to the upstream section and the downstream section; the P port of the reversing valve (8) is connected with the upstream section of the exhaust pipeline (9) through a pipeline, the A port of the reversing valve (8) is connected with the air inlet (104) of the energy accumulator body (1) through a pipeline, and the exhaust port (105) of the energy accumulator body (1) is connected with the downstream section of the exhaust pipeline (9) through a pipeline; the tail gas of the engine is introduced into the air inlet (104), flows into the third pipeline (5) through the inner hole of the first pipeline (3), then flows into the second pipeline (4), and finally flows out through the air outlet (105).
7. The energy-saving system using the waste heat of the tail gas of the engine as claimed in claim 6, wherein the reversing valve (8) is a two-position two-way electromagnetic reversing valve which works at an upper position when power is on and works at a lower position when power is off; when working at the upper position, the port P is communicated with the port A, and when working at the lower position, the port P is disconnected with the port A.
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| CN202010985676.6A CN111963333B (en) | 2020-09-18 | 2020-09-18 | Energy accumulator and energy-saving system utilizing waste heat of engine tail gas |
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| CN202010985676.6A CN111963333B (en) | 2020-09-18 | 2020-09-18 | Energy accumulator and energy-saving system utilizing waste heat of engine tail gas |
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| CN111963333B true CN111963333B (en) | 2022-05-24 |
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| JP2017129168A (en) * | 2016-01-18 | 2017-07-27 | いすゞ自動車株式会社 | Energy storage device |
| CN107829990A (en) * | 2017-10-31 | 2018-03-23 | 范师华 | A kind of more kinetic energy accumulators |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102011120227B4 (en) * | 2011-12-03 | 2013-08-14 | Hydac Fluidtechnik Gmbh | Hydraulic hybrid system for rotary applications |
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| CN101779045A (en) * | 2007-06-14 | 2010-07-14 | 利莫－里德公司 | Compact hydraulic accumulator |
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Effective date of registration: 20231117 Address after: 274000 Comprehensive Management Department, 1st Floor, G5 Office Building, Bohai Road Intelligent Manufacturing Machinery and Equipment Industrial Park, Yuecheng Street, Development Zone, Heze City, Shandong Province Patentee after: Hydrogen Alcohol Power Technology (Shandong) Co.,Ltd. Address before: No. 1 Xiangwang Road, Drum Tower District, Xuzhou, Jiangsu Patentee before: XUZHOU College OF INDUSTRIAL TECHNOLOGY |