CN106090988A - A kind of anti-freeze type heat pipe wind-warming unit system - Google Patents
A kind of anti-freeze type heat pipe wind-warming unit system Download PDFInfo
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- CN106090988A CN106090988A CN201610642197.8A CN201610642197A CN106090988A CN 106090988 A CN106090988 A CN 106090988A CN 201610642197 A CN201610642197 A CN 201610642197A CN 106090988 A CN106090988 A CN 106090988A
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- heat pipe
- gate valve
- outlet
- outlet pass
- warming unit
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- 238000010792 warming Methods 0.000 title claims abstract description 51
- 230000002528 anti-freeze Effects 0.000 title claims abstract description 44
- 108010053481 Antifreeze Proteins Proteins 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 238000013461 design Methods 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims description 19
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- 239000003507 refrigerant Substances 0.000 claims description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 14
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000003517 fume Substances 0.000 claims description 5
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012546 transfer Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000007710 freezing Methods 0.000 description 8
- 230000008014 freezing Effects 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 230000009172 bursting Effects 0.000 description 4
- 230000005494 condensation Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- 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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a kind of anti-freeze type heat pipe wind-warming unit system, it includes heat pipe wind-warming unit body, there is the steam air heater hydroecium of the first outlet pass and the second outlet pass, following current heat exchange controls circuit and countercurrent flow controls circuit, the bottom of all heat pipes is stretched in steam air heater hydroecium, outside is made to be supplied to the hot water of steam air heater hydroecium to flow to the second outlet pass from the first outlet pass when the temperature of air is less than or equal to design temperature, with consistent with the flow direction of the air by heat pipe wind-warming unit body, countercurrent flow controls circuit and is connected with the second outlet pass and the first outlet pass respectively, and make outside be supplied to the hot water of steam air heater hydroecium to flow to the first outlet pass from the second outlet pass when the temperature of air is higher than design temperature, with contrary with the flow direction of the air by heat pipe wind-warming unit body；Advantage well prevents heat pipe freeze when being with air following current heat exchange, thoroughly achieves preventing freeze in winter, well enhances heat transfer effect during with air inversion heat exchange.
Description
Technical field
The present invention relates to a kind of warm air system, especially relate to a kind of anti-freeze type heat pipe wind-warming unit system.
Background technology
Steam air heater is installed additional, to improve the cold end wall of air preheater in northern China, the typically entrance at air preheater
Temperature, prevents the cold end of air preheater from cold end corrosion and the phenomenon of stifled ash occur.At present, most steam air heater is with auxiliary steam
For thermal source, utilize auxiliary steam that Cryogenic air is heated；But auxiliary steam grade is higher, it is used for heating steam air heater and causes
The energy consumption of steam air heater is serious.Along with national energy-saving reduces discharging the increasingly stringent of policy, the thermal source of steam air heater has from high-grade auxiliary
Steam develops to low-grade even hot water direction of drawing gas.
Having power plant that the thermal source of steam air heater changes into steam turbine five sections to draw gas even six sections and draw gas, Ye You power plant is by steam air heater
Thermal source changes the hot water heated by fume afterheat into, and also the thermal source of steam air heater is changed into the hot water of low adding system by power plant.The most where
Plant transformation, all greatly reduce the energy consumption of steam air heater, play a role in energy saving.But find in actual motion, use
When steam turbine five sections is drawn gas, energy-saving effect is inconspicuous；And use steam turbine six sections to draw gas or the hot water of fume afterheat heating or low add
During the hot water of system, the most usually can freeze, frozen pipe phenomenon, steam air heater frozen pipe can cause warming up after rupturing to cause steam air heater to occur
The condensation water of wind device is revealed, the operation of harm air preheater, and the condensation water of steam air heater reveal after cannot on-bne repair, can only
Off-the-line, compromises the operation of air preheater further.
Summary of the invention
The technical problem to be solved is to provide a kind of anti-freeze type heat pipe wind-warming unit system, its good energy-conserving effect,
And can thoroughly realize preventing freeze in winter.
The present invention solves the technical scheme that above-mentioned technical problem used: a kind of anti-freeze type heat pipe wind-warming unit system, its
It is characterised by: include heat pipe wind-warming unit body that heat pipe that is separate by many and that be vertically arranged forms, there is the first water flowing
Mouth and the steam air heater hydroecium of the second outlet pass, following current heat exchange control circuit and countercurrent flow controls circuit, described heat pipe warm braw
Device body is with low-grade hot water as thermal source, and the bottom of all described heat pipes is stretched in described steam air heater hydroecium, described
Following current heat exchange controls circuit and is connected with the first described outlet pass and the second described outlet pass respectively, and low at the temperature of air
In or equal to design temperature time make outside be supplied to the hot water of described steam air heater hydroecium to flow to institute from the first described outlet pass
The second outlet pass of stating, with the countercurrent flow control consistent, described with the flow direction of the air by described heat pipe wind-warming unit body
Circuit processed is connected with the second described outlet pass and the first described outlet pass respectively, and at the temperature of air higher than design temperature
Time make outside be supplied to the hot water of described steam air heater hydroecium from the second described outlet pass flow to described in the first outlet pass, with
Contrary with the flow direction of the air by described heat pipe wind-warming unit body.
Described following current heat exchange control line route the first gate valve and the second gate valve composition, and the first described outlet pass is as warm
Water inlet, the second described outlet pass is as cooling water outlet, and the entrance of the first described gate valve is passed through hot water by pipeline, described
The outlet of the first gate valve be connected with the first described outlet pass by pipeline, the second described outlet pass by pipeline with described
The second gate valve entrance connect, the outlet of the second described gate valve discharges cold water by pipeline；Described countercurrent flow controls
Circuit is made up of the 3rd gate valve and the 4th gate valve, and the second described outlet pass is made as hot water inlet, the first described outlet pass
For cooling water outlet, the entrance of the 3rd described gate valve is passed through hot water by pipeline, and pipeline is passed through in the outlet of the 3rd described gate valve
Being connected with the second described outlet pass, the first described outlet pass is connected with the entrance of the 4th described gate valve by pipeline, institute
The outlet of the 4th gate valve stated discharges cold water by pipeline.Here, utilize the first gate valve and the second gate valve and pipeline composition following current
Heat exchange controls circuit, utilizes the 3rd gate valve and the 4th gate valve and pipeline composition countercurrent flow to control circuit, not only makes following current change
Thermal control circuit and countercurrent flow control the simple in construction of circuit, low cost, and easy to control, air temperature less than or
Open the first gate valve and the second gate valve during equal to design temperature and close the 3rd gate valve and the 4th gate valve, and at the gas of air
Temperature is higher than opening the 3rd gate valve and the 4th gate valve during design temperature and closing the first gate valve and the second gate valve.
This anti-freeze type heat pipe wind-warming unit system also includes that booster pump, the water inlet of described booster pump return with outside steam turbine
The hot water output port of hot systems connects or is connected with the hot water output port of outside fume afterheat heater, described booster pump
Outlet is connected with the entrance of the entrance of the first described gate valve and the 3rd described gate valve by pipeline respectively, described supercharging
The outlet of pump is passed through hot water to the entrance of the first described gate valve or the entrance to the 3rd described gate valve is passed through hot water.?
This, utilize booster pump to be squeezed in steam air heater hydroecium by the hot water at hot water source.
It is light pipe that described heat pipe is positioned in described steam air heater hydroecium the part contacted with water, and described heat pipe is positioned at institute
Outer and air contact the part of the steam air heater hydroecium stated is finned tube.Here, it is outer and air contact to will be located in steam air heater hydroecium
Part heat pipe design be finned tube be for extended surface area, to increase the heat exchange area of heat pipe, thus strengthen heat exchange efficiency, more
Add energy-conservation.
Described finned tube is spiral fin coil or H type finned tube, it is also possible to select existing other type of finned tube.
9th/60th to ten/7ths of the length of a length of described heat pipe of described finned tube, i.e. the length of light pipe
For the length of heat pipe 1/10th to ten/7th.Owing to the working medium in heat pipe is that antifreeze liquid refrigerant is (such as methanol or second two
Alcohol or acetone or other conventional heat-pipe medium), antifreeze liquid refrigerant can fast vaporizing be steam after being heated, and rises to heat pipe
Finned tube in, the most only need sub-fraction heat pipe and hot water contacts just can well realize the heat exchange of heat pipe.
Described design temperature is-20 DEG C.This design temperature is by a large amount of on the basis of the technical scheme of the application
Experiment determines.
The air intake of described heat pipe wind-warming unit body is connected with the air outlet of outside pressure fan, described heat pipe warm braw
The air preheater outside hot-air supply of the gas outlet output of device body.
The material of described heat pipe is carbon steel or steel combined with aluminum material；The described working medium in heat pipe is antifreeze liquid work
Matter, described antifreeze liquid refrigerant is methanol or ethylene glycol or acetone.
Compared with prior art, it is an advantage of the current invention that:
1) present invention uses heat pipe wind-warming unit body, and with low-grade hot water as thermal source, and it is provided with following current heat exchange control line
Road and countercurrent flow control circuit, make outside be supplied to steam air heater hydroecium when the temperature of air is less than or equal to design temperature
Hot water is consistent with the flow direction of the air by heat pipe wind-warming unit body, it is achieved that with the following current heat exchange of air, well prevent
Heat pipe freeze, thoroughly achieves preventing freeze in winter；Outside is made to be supplied to steam air heater hydroecium when the temperature of air is higher than design temperature
Hot water contrary with the flow direction of the air by heat pipe wind-warming unit body, it is achieved that with the countercurrent flow of air, well strengthen
Heat transfer effect.
2) owing to the freezing point of the working medium in heat pipe is generally below-50 DEG C, thus without freezing, and hot water and heat
Pipe carries out heat exchange in steam air heater hydroecium, even if the light pipe of heat pipe freezes also to can only occur in steam air heater hydroecium, again by
Space in steam air heater hydroecium is relatively big, even if therefore the light pipe of heat pipe freezes also, also will not to be led even if bursting by freezing by bursting by freezing
Cause a large amount of working medium to reveal, the not operation of entail dangers to air preheater.
3) steam air heater hydroecium is outside air channel, steam air heater hydroecium freeze after can on-line maintenance easily, increase greatly
Add the stability of the present invention.
4) present invention is by heat pipe wind-warming unit first Application in power plant field, has expanded the range of application of heat pipe wind-warming unit.
Accompanying drawing explanation
Fig. 1 is the composition structural representation of the anti-freeze type heat pipe wind-warming unit system of the present invention；
Fig. 2 is the structural representation of the heat pipe wind-warming unit body in the anti-freeze type heat pipe wind-warming unit system of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment one:
A kind of anti-freeze type heat pipe wind-warming unit system that the present embodiment proposes, as depicted in figs. 1 and 2, it includes by many most solely
Vertical and the heat pipe wind-warming unit body 1 of heat pipe 11 composition that is vertically arranged, there is the warm of the first outlet pass 21 and the second outlet pass 22
Wind device hydroecium 2, following current heat exchange control circuit and countercurrent flow controls circuit, the air intake of heat pipe wind-warming unit body 1 and outside
The air outlet of pressure fan connects, the air preheater outside hot-air supply of the gas outlet output of heat pipe wind-warming unit body 1, heat
Pipe steam air heater body 1 is with low-grade hot water as thermal source, and the bottom of all heat pipes 11 is stretched in steam air heater hydroecium 2, following current heat exchange
Control circuit to be connected with the first outlet pass 21 and the second outlet pass 22 respectively, and at the temperature of air less than or equal to design temperature
Time make outside be supplied to the hot water of steam air heater hydroecium 2 to flow to the second outlet pass 22 from the first outlet pass 21, to warm up with by heat pipe
The flow direction of the air of wind device body 1 is consistent, and countercurrent flow controls circuit and connects with the second outlet pass 22 and the first outlet pass 21 respectively
Connect, and make outside be supplied to the hot water of steam air heater hydroecium 2 to flow from the second outlet pass 22 when the temperature of air is higher than design temperature
To the first outlet pass 21, with contrary with the flow direction of the air by heat pipe wind-warming unit body 1.
In this particular embodiment, this anti-freeze type heat pipe wind-warming unit system also includes that the hot water at by hot water source is beaten
Entering the booster pump 3 in steam air heater hydroecium 2, the water inlet of booster pump 3 is connected with the hot water output port of outside steam turbine heat regenerative system
Or be connected with the hot water output port of outside fume afterheat heater, following current heat exchange control line route the first gate valve K1 and the second lock
Valve K2 forms, and the first outlet pass 21 is as hot water inlet, and the second outlet pass 22 leads to as cooling water outlet, the entrance of the first gate valve K1
Piping is connected with the outlet of booster pump 3, and the outlet of booster pump 3 is passed through hot water to the entrance of the first gate valve K1, the first lock
The outlet of valve K1 is connected by pipeline and the first outlet pass 21, and the second outlet pass 22 is by the entrance of pipeline and the second gate valve K2 even
Connecing, the outlet of the second gate valve K2 discharges cold water by pipeline；Countercurrent flow control line route the 3rd gate valve K3 and the 4th gate valve K4
Composition, the second outlet pass 22 is as hot water inlet, and the first outlet pass 21 is as cooling water outlet, and the entrance of the 3rd gate valve K3 is by pipe
Road is connected with the outlet of booster pump 3, and the outlet of booster pump 3 is passed through hot water to the entrance of the 3rd gate valve K3, the 3rd gate valve K3
Outlet connected by pipeline and the second outlet pass 22, the first outlet pass 21 by the entrance connection of pipeline with the 4th gate valve K4,
The outlet of the 4th gate valve K4 discharges cold water by pipeline.Here, utilize the first gate valve K1 and the second gate valve K2 and pipeline composition suitable
Stream heat exchange controls circuit, utilizes the 3rd gate valve K3 and the 4th gate valve K4 and pipeline composition countercurrent flow to control circuit, not only makes
Following current heat exchange controls circuit and countercurrent flow controls the simple in construction of circuit, low cost, and easy to control, at the temperature of air
Open the first gate valve K1 and the second gate valve K2 during less than or equal to design temperature and close the 3rd gate valve K3 and the 4th gate valve K4
Can, and open the 3rd gate valve K3 and the 4th gate valve K4 when the temperature of air is higher than design temperature and close the first gate valve K1 and the
Two gate valve K2；The control of the first gate valve K1 and the second gate valve K2 and the 3rd gate valve K3 and the 4th gate valve K4 can use automatically
Control, it would however also be possible to employ Artificial Control.
In this particular embodiment, it is light pipe 111 that heat pipe 11 is positioned in steam air heater hydroecium 2 part contacted with water, heat pipe
11 to be positioned at outer and air contact the part of steam air heater hydroecium 2 be finned tube 112, will be located in steam air heater hydroecium 2 outward and air contact
Part heat pipe design be finned tube 112 be for extended surface area, to increase the heat exchange area of heat pipe 11, thus strengthen heat exchange
Efficiency, more energy-conservation；Finned tube 112 is spiral fin coil or H type finned tube, it is also possible to select existing other type of fin
Pipe；The seven of the length of a length of heat pipe 11 of 6/7ths of the length of a length of heat pipe 11 of finned tube 112, i.e. light pipe 111
/ mono-, owing to the working medium in heat pipe 11 is that antifreeze liquid refrigerant is (such as methanol or ethylene glycol or acetone or other conventional heat pipes
Medium), antifreeze liquid refrigerant can fast vaporizing be steam after being heated, and rises to, in the finned tube 112 of heat pipe 11, the most only need
Sub-fraction heat pipe and hot water contacts just can well realize the heat exchange of heat pipe 11；The material of heat pipe 11 is that carbon steel or steel aluminum are multiple
Condensation material；Working medium in heat pipe 11 is antifreeze liquid refrigerant, and antifreeze liquid refrigerant is methanol or ethylene glycol or acetone.
In this particular embodiment, design temperature is-20 DEG C, and this design temperature is the basis of the technical scheme in the application
On determined by great many of experiments.
Embodiment two:
A kind of anti-freeze type heat pipe wind-warming unit system of the present embodiment proposition and the anti-freeze type heat pipe wind-warming unit system of embodiment one
Other structure is identical, the difference is that only: 9/10ths of the length of a length of heat pipe 11 of finned tube 112, i.e. light pipe 111
A length of heat pipe 11 length 1/10th.
Embodiment three:
A kind of anti-freeze type heat pipe wind-warming unit system of the present embodiment proposition and the anti-freeze type heat pipe wind-warming unit system of embodiment one
Other structure is identical, the difference is that only: 31st/35ths of the length of a length of heat pipe 11 of finned tube 112,
I.e. 4th/35th of the length of a length of heat pipe 11 of light pipe 111.
The work process of the anti-freeze type heat pipe wind-warming unit system of the present invention is: close when the temperature of air is higher than-20 DEG C
First gate valve and the second gate valve, open the 3rd gate valve and the 4th gate valve, and low-grade hot water enters the 3rd gate valve by booster pump,
Subsequently into steam air heater hydroecium, the antifreeze liquid refrigerant in all heat pipes of hot water heating in steam air heater hydroecium, antifreeze liquid work
Matter is vaporizated into steam after being heated, and is climbed in the finned tube of heat pipe, with the cold air heat exchange in air channel after liquefaction for liquid,
Internal face along heat pipe flows to the pipe basis of heat pipe, continues by hot water heating, thus completes the countercurrent flow with air, very
Good enhances heat transfer effect, and the cold water that steam air heater hydroecium flows out enters the 4th gate valve and discharges；When the temperature of air is less than
Or during equal to-20 DEG C, in order to prevent the hot water in steam air heater hydroecium from freezing, close the 3rd gate valve and the 4th gate valve, open first
Gate valve and the second gate valve, low-grade hot water enters the first gate valve by booster pump, subsequently into steam air heater hydroecium, steam air heater water
The antifreeze liquid refrigerant in all heat pipes of hot water heating in room, antifreeze liquid refrigerant is vaporizated into steam, rapid increase after being heated
In the finned tube of heat pipe, with the cold air heat exchange in air channel after liquefaction for liquid, the internal face along heat pipe flows to heat pipe
Pipe basis, continues by hot water heating, thus completes the following current heat exchange with air, well prevent steam air heater hydroecium to freeze,
And the cold water that steam air heater hydroecium flows out enters the second gate valve and discharges.
The anti-freeze type heat pipe wind-warming unit system of the present invention utilizes low-grade hot water heating heat pipe, then by the cold sky of heat pipes heat
Gas, owing to the freezing point of the antifreeze liquid refrigerant in heat pipe can reach-50 DEG C, therefore the antifreeze liquid refrigerant in heat pipe will not
Frozen, hot water and heat pipe carry out heat exchange in steam air heater hydroecium, and the space in steam air heater hydroecium is relatively big, even if heat pipe freezes also
Even if bursting by freezing by bursting by freezing, will not be also not result in that antifreeze liquid refrigerant is revealed and jeopardize the operation of air preheater, and to greatest extent
The energy consumption saving heat pipe wind-warming unit body, reduce gross coal consumption rate, reached the real purpose of energy-saving and emission-reduction.
Claims (9)
1. an anti-freeze type heat pipe wind-warming unit system, it is characterised in that: include heat pipe that is separate by many and that be vertically arranged
Composition heat pipe wind-warming unit body, have the steam air heater hydroecium of the first outlet pass and the second outlet pass, following current heat exchange control circuit
And countercurrent flow controls circuit, described heat pipe wind-warming unit body with low-grade hot water as thermal source, all described heat pipes
Bottom is stretched in described steam air heater hydroecium, described following current heat exchange control circuit respectively with the first described outlet pass and described
Second outlet pass connect, and air temperature less than or equal to design temperature time make outside be supplied to described steam air heater water
The hot water of room from described first outlet pass flow to described in the second outlet pass, with by described heat pipe wind-warming unit body
The flow direction of air is consistent, described countercurrent flow control circuit respectively with the second described outlet pass and the first described outlet pass
Connect, and make when the temperature of air is higher than design temperature outside be supplied to the hot water of described steam air heater hydroecium from described the
Two outlet passes flow to described in the first outlet pass, with contrary with the flow direction of the air by described heat pipe wind-warming unit body.
A kind of anti-freeze type heat pipe wind-warming unit system the most according to claim 1, it is characterised in that: described following current heat exchange control
Circuit processed is made up of the first gate valve and the second gate valve, and the first described outlet pass is as hot water inlet, the second described outlet pass
As cooling water outlet, the entrance of the first described gate valve is passed through hot water, and the outlet of the first described gate valve is led to described first
The mouth of a river connects, and the second described outlet pass is connected with the entrance of the second described gate valve, and the outlet of the second described gate valve is discharged
Cold water；Described countercurrent flow control line route the 3rd gate valve and the 4th gate valve composition, the second described outlet pass is as hot water
Entrance, the first described outlet pass is as cooling water outlet, and the entrance of the 3rd described gate valve is passed through hot water, the 3rd described gate valve
Outlet be connected with the second described outlet pass, the first described outlet pass is connected with the entrance of the 4th described gate valve, described
The 4th gate valve outlet discharge cold water.
A kind of anti-freeze type heat pipe wind-warming unit system the most according to claim 2, it is characterised in that: this anti-freeze type heat pipe warm braw
Device system also includes booster pump, the water inlet of described booster pump be connected with the hot water output port of outside steam turbine heat regenerative system or
Be connected with the hot water output port of outside fume afterheat heater, the outlet of described booster pump respectively with the first described lock
The entrance of valve and the entrance of the 3rd described gate valve connect, and the outlet of described booster pump is to the entrance of the first described gate valve
It is passed through hot water or the entrance to the 3rd described gate valve is passed through hot water.
A kind of anti-freeze type heat pipe wind-warming unit system the most according to any one of claim 1 to 3, it is characterised in that: described
Heat pipe to be positioned in described steam air heater hydroecium the part contacted with water be light pipe, described heat pipe is positioned at described steam air heater water
Outdoor and air contact part is finned tube.
A kind of anti-freeze type heat pipe wind-warming unit system the most according to claim 4, it is characterised in that: described finned tube is spiral shell
Rotation finned tube or H type finned tube.
A kind of anti-freeze type heat pipe wind-warming unit system the most according to claim 4, it is characterised in that: the length of described finned tube
9th/60th to ten/7ths of the length that degree is described heat pipe.
A kind of anti-freeze type heat pipe wind-warming unit system the most according to any one of claim 1 to 3, it is characterised in that: described
Design temperature be-20 DEG C.
A kind of anti-freeze type heat pipe wind-warming unit system the most according to claim 1, it is characterised in that: described heat pipe wind-warming unit
The air intake of body is connected with the air outlet of outside pressure fan, and the heat of the gas outlet output of described heat pipe wind-warming unit body is empty
Air preheater outside gas supply.
A kind of anti-freeze type heat pipe wind-warming unit system the most according to claim 1, it is characterised in that: the material of described heat pipe
For carbon steel or steel combined with aluminum material；The described working medium in heat pipe is antifreeze liquid refrigerant, and described antifreeze liquid refrigerant is
Methanol or ethylene glycol or acetone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642197.8A CN106090988A (en) | 2016-08-05 | 2016-08-05 | A kind of anti-freeze type heat pipe wind-warming unit system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610642197.8A CN106090988A (en) | 2016-08-05 | 2016-08-05 | A kind of anti-freeze type heat pipe wind-warming unit system |
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| CN201610642197.8A Pending CN106090988A (en) | 2016-08-05 | 2016-08-05 | A kind of anti-freeze type heat pipe wind-warming unit system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283937A (en) * | 2020-11-21 | 2021-01-29 | 西安热工研究院有限公司 | Frost prevention system for water medium air heater and control method |
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