CN112838249B - Fuel cell purging system and purging method thereof - Google Patents

Fuel cell purging system and purging method thereof Download PDF

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Publication number
CN112838249B
CN112838249B CN202110090039.7A CN202110090039A CN112838249B CN 112838249 B CN112838249 B CN 112838249B CN 202110090039 A CN202110090039 A CN 202110090039A CN 112838249 B CN112838249 B CN 112838249B
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pile
communicated
silencing
shell
pipe
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CN112838249A (en
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李丰军
周剑光
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China Automotive Innovation Co Ltd
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China Automotive Innovation Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04701Temperature
    • H01M8/04738Temperature of auxiliary devices, e.g. reformer, compressor, burner
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04791Concentration; Density
    • H01M8/04798Concentration; Density of fuel cell reactants
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

The invention discloses a fuel cell purging system, comprising: the air treatment module, the electric pile module and the electric pile shell are coated outside the electric pile module; the in-pile branch is communicated with the air treatment module and the electric pile module; the pile outer branch is communicated with the air treatment module and the pile shell; and a bearing cooling circuit, one end of which is communicated with the in-stack branch and extends to and is communicated with the out-stack branch through a bearing of the air treatment module. According to the invention, the bearing cooling loop and the out-of-stack branch are connected in series, one branch is shared, so that the additional air consumption is reduced, the system power and efficiency are improved, meanwhile, the bearing purging gas cooling loop is added, the high-temperature gas purged by the air compressor bearing is cooled again through the cooling liquid, the temperature entering the shell of the electric pile is controlled, and the temperature of the purging gas of the electric pile is effectively ensured to be within a reasonable range.

Description

Fuel cell purging system and purging method thereof
Technical Field
The invention relates to a fuel cell purging system, in particular to a fuel cell purging system and a purging method thereof.
Background
The cathode of the hydrogen fuel cell system is usually pressurized by adopting an air bearing centrifugal air compressor, and the air compressor needs to adopt gas to cool the bearing;
meanwhile, the bare pile of the pile has micro permeation, and gas purging is needed to ensure that the hydrogen concentration inside the pile module is in a safe range.
The two paths of gases in the conventional fuel cell system are not used in a fusion manner, certain air is additionally consumed, the system efficiency is reduced, the air temperature is increased after the air purges the air compressor bearing, and the temperature of the electric pile can be increased when the electric pile module is purged by using the gases.
Disclosure of Invention
The purpose of the invention is as follows: a fuel cell purge system is provided to solve the above problems of the prior art.
The technical scheme is as follows: a fuel cell purge system, comprising:
an air treatment module for treating the air in a room,
the electric pile module is used for electrically connecting the electric pile module,
the galvanic pile shell is coated outside the galvanic pile module;
the in-pile branch is communicated with the air treatment module and the galvanic pile module;
the pile outer branch is communicated with the air treatment module and the pile shell;
and the bearing cooling loop is communicated with the in-pile branch and extends to the out-pile branch through the bearing of the air treatment module.
In a further embodiment, the in-stack branch and the out-stack branch are communicated with a silencer;
the air treatment module comprises an intercooler, an air compressor and an air filter, wherein the intercooler is communicated with the in-pile branch and the out-pile branch; the in-pile branch line comprises an in-pile inlet pipe connected with the intercooler, a galvanic pile module communicated with the in-pile inlet pipe, and an in-pile outlet pipe communicated with the galvanic pile module;
the in-pile inlet pipe is sequentially provided with a humidifier and an in-pile stop valve from a position close to the intercooler to the direction of the galvanic pile module;
the in-pile outlet pipe is sequentially provided with a pile outlet stop valve, a humidifier and a back pressure valve in the direction from the position close to the galvanic pile module to the silencer;
the in-pile outlet pipe is communicated with the muffler.
The cooling and purging work of the electric pile module is completed by designing the in-pile branch circuit, and the situation that the temperature is too high when the electric pile module works is further avoided.
In a further embodiment, the out-of-stack branch includes a stack case inlet pipe communicating with the intercooler, a stack case communicating with the stack case inlet pipe, and a stack case outlet pipe communicating with the stack case;
the stack shell outlet pipe is communicated with the muffler.
The outer branch road of heap is accomplished the cooling to the pile casing through the design and is swept work, and then avoids appearing the temperature rise because of the pile module carries out the during operation, and then drives the pile casing temperature and rise, and then influences the work efficiency of pile module.
In a further embodiment, the bearing cooling circuit includes an air compressor bearing cooling inlet in communication with the in-stack inlet;
the air compressor bearing cooling inlet pipe passes through the air compressor bearing and is communicated with the intercooler;
the high-temperature gas blown by the bearing of the air compressor is cooled again through the cooling liquid, the temperature of the high-temperature gas entering the shell of the galvanic pile is controlled, and the temperature of the blown gas of the galvanic pile is effectively ensured to be within a reasonable range;
meanwhile, the bearing cooling loop is connected with the out-of-pile branch in series, and one branch is shared, so that the additional air consumption is reduced, the system power and efficiency are improved,
in a further embodiment, the intercooler comprises an intercooling tube communicated with a cell stack shell inlet tube, a plurality of groups of intercooling fins sleeved on the intercooling tube, and an intercooling shell fixedly connected with the intercooling fins;
cooling liquid for cooling is placed in the intercooling shell; the cooling liquid contacts the intercooling fin; one end of the intercooling shell is provided with a cooling liquid inlet, and the other end of the intercooling shell is provided with a cooling liquid outlet;
the intercooling tube is placed in the intercooling fin in an S shape;
through the design of the middle cooling pipe, the cooling work of the air passing through the intercooler is completed.
In a further embodiment, the stacking stop valve and the stacking stop valve are two groups of valves with the same structure;
the in-pile stop valve comprises a valve channel communicated with an in-pile inlet pipe, a valve shell fixedly connected with the valve channel, a valve screw rod inserted in the valve shell, and a valve handle fixedly arranged on the valve screw rod;
the bottom of the valve screw rod is fixedly connected with a valve ball connecting rod;
the bottom of the valve ball connecting rod is fixedly provided with a blocking valve ball, and the blocking valve ball is matched with the valve channel;
through designing into the stop valve of piling, control the opening and the closure of going into the heap branch road, and then realize intelligent cooling worker's work, practiced thrift the resource simultaneously.
In a further embodiment, the muffler comprises a muffling inlet pipe communicated with an outlet pipe of a galvanic pile shell and an outlet pipe in a galvanic pile, a first muffling plate fixedly connected with the muffling inlet pipe, a second muffling plate arranged below the first muffling plate, a first muffling pipe and a second muffling pipe inserted in the second muffling plate, a three-layer muffling plate arranged below the second muffling plate and sleeved on the first muffling pipe and the second muffling pipe, a muffling blocking pipe inserted in the three muffling plate and communicated with the second muffling pipe, a muffling bottom plate sleeved on the muffling blocking pipe and arranged below the three muffling plate, and a muffling outlet pipe communicated with the muffling blocking pipe;
the first layer of the silencing plate, the second layer of the silencing plate and the third layer of the silencing plate are provided with honeycomb silencing holes; soundproof cotton is placed in the silencing hole;
sound outlet holes are formed in the first silencing pipe and the second silencing pipe;
carry out the noise elimination through the silencer, and then when avoiding the exhaust air, sound is great, appears influencing the condition that other people worked.
In a further embodiment, the air filter includes a filter housing, and a filter element disposed within the filter housing;
the filter element comprises a filter element shell and a plurality of groups of filter cotton which are prevented from being in the filter element shell;
the filter element shell is provided with a plurality of groups of air inlets, and the end part of the filter element shell is provided with a plurality of groups of air outlets communicated with the air compressor.
A purge method of a fuel cell purge system, comprising:
firstly, air enters an air compressor through an air filter, the air compressor is used for supercharging the air, and the air with sufficient flow required by the reactor reaction is provided;
when air enters the air compressor through the filter, the filter element is used for filtering dust in the air, so that the dust is prevented from entering the air compressor and the electric pile to cause blockage and other adverse phenomena, and the work of the air compressor and the electric pile is influenced;
secondly, air enters an intercooler, and cooling of the air is completed through cooling liquid with relatively low temperature, so that the temperature of reaction gas entering the galvanic pile is guaranteed to be within a reasonable range, and overheating can not occur;
when the air compressor works for a long time and the temperature of the inner bearing of the air compressor is too high, the air passing through the intercooler enters the bearing blowing pipe of the air compressor to cool the inner bearing of the air compressor;
after the air absorbs heat through the bearing of the air compressor, the air enters the intercooler to be cooled, and the shell of the electric pile is used for blowing and sweeping; then the gas flows out from a discharge pipe of the galvanic pile shell and is discharged through a silencer, and then the purging work of the galvanic pile shell is completed;
when the interior of the pile module needs to be purged, the pile inlet stop valve, the pile outlet stop valve and the back pressure valve are opened at the moment;
at the moment, air passing through the intercooler enters the humidifier through the in-pile inlet pipe, then enters the inside of the galvanic pile module through the in-pile stop valve, and then purges the inside of the galvanic pile module; air enters the humidifier through the stack outlet stop valve, passes through the back pressure valve and is finally muffled and discharged through the muffler.
Has the advantages that: the invention discloses a fuel cell purging system, which is characterized in that a bearing cooling loop and an out-of-stack branch are connected in series, one branch is shared, so that the additional air consumption is reduced, the system power and efficiency are improved, meanwhile, the bearing cooling loop is added, high-temperature gas purged by an air compressor bearing is cooled again by cooling liquid, the temperature entering a shell of a galvanic pile is controlled, and the temperature of the purging gas of the galvanic pile is effectively ensured to be within a reasonable range.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the stack shutoff valve of the present invention.
Figure 3 is a schematic view of a candle of the present invention.
Fig. 4 is a schematic view of a muffler of the present invention.
Fig. 5 is a schematic view of an intercooler of the present invention.
Reference numerals: the device comprises a middle cooling pipe 11, a middle cooling fin 12, a silencing inlet pipe 21, a first silencing plate 22, a second silencing plate 23, a third silencing plate 24, a first silencing pipe 25, a silencing bottom plate 26, a silencing outlet pipe 27, a silencing blocking pipe 28, a second silencing pipe 29, a filter element shell 31, an air outlet 32, an air inlet 33, a valve shell 41, a valve handle 42, a valve screw rod 43, a valve ball connecting rod 44, a blocking valve ball 45 and a valve channel 46.
Detailed Description
Through research and analysis of the applicant, the reason for the problem (the existing battery purging system easily causes external air consumption and increases the temperature of the stack when purging the stack module) is that the two paths of gas in the existing fuel battery system are not fused for use, and all consume a certain amount of air additionally, so that the system efficiency is reduced, when the air purges the air compressor bearing, the air temperature is increased, and the stack temperature is likely to be increased when purging the stack module by using the air.
A fuel cell purge system, comprising: the device comprises a middle cooling pipe 11, a middle cooling fin 12, a silencing inlet pipe 21, a first silencing plate 22, a second silencing plate 23, a third silencing plate 24, a first silencing pipe 25, a silencing bottom plate 26, a silencing outlet pipe 27, a silencing blocking pipe 28, a second silencing pipe 29, a filter element shell 31, an air outlet 32, an air inlet 33, a valve shell 41, a valve handle 42, a valve screw rod 43, a valve ball connecting rod 44, a blocking valve ball 45 and a valve channel 46.
A fuel cell purge system comprising: the air treatment module, the electric pile module and the electric pile shell are coated outside the electric pile module; the in-pile branch is communicated with the air treatment module and the electric pile module; the pile outer branch is communicated with the air treatment module and the pile shell; and a bearing cooling circuit, one end of which is communicated with the in-stack branch and extends to and is communicated with the out-stack branch through a bearing of the air treatment module.
The in-pile branch and the out-pile branch are communicated with a silencer;
the air treatment module comprises an intercooler, an air compressor and an air filter, wherein the intercooler is communicated with the in-pile branch and the out-pile branch; the in-stack branch line comprises an in-stack inlet pipe connected with the intercooler, a galvanic pile module communicated with the in-stack inlet pipe, and an in-stack outlet pipe communicated with the galvanic pile module;
a humidifier and a pile entering stop valve are sequentially arranged on the pile entering pipe from a position close to the intercooler to the direction of the electric pile module;
the in-pile outlet pipe is sequentially provided with a pile outlet stop valve, a humidifier and a back pressure valve in the direction from the position close to the galvanic pile module to the silencer;
the in-pile outlet pipe is communicated with the muffler.
The cooling and purging work of the electric pile module is completed by designing the in-pile branch circuit, and the situation that the temperature is too high when the electric pile module works is further avoided.
The out-of-stack branch comprises a stack shell inlet pipe communicated with the intercooler, a stack shell communicated with the stack shell inlet pipe, and a stack shell outlet pipe communicated with the stack shell;
the stack shell outlet pipe is communicated with the muffler.
The outer branch road of heap is accomplished the cooling to the galvanic pile casing through the design and is swept work, and then avoids appearing the temperature because of the galvanic pile module carries out the during operation and risees, and then drives galvanic pile casing temperature and risees, and then influences the work efficiency of galvanic pile module.
The bearing cooling loop comprises an air compressor bearing cooling inlet pipe communicated with the in-pile inlet pipe;
the air compressor bearing cooling inlet pipe passes through the air compressor bearing and is communicated with the intercooler;
the high-temperature gas swept by the bearing of the air compressor is cooled again through the cooling liquid, the temperature entering the shell of the galvanic pile is controlled, and the temperature of the sweeping gas of the galvanic pile is effectively ensured to be within a reasonable range;
meanwhile, the bearing cooling loop is connected with the out-of-stack branch in series, and one branch is shared, so that the extra air consumption is reduced, and the system power and efficiency are improved;
meanwhile, the diameters of the air compressor bearing purging pipeline and the pile shell purging pipeline are increased by 40%, and the rated point efficiency is improved by 0.5%.
The intercooler comprises an intercooling tube 11 communicated with an inlet tube of the stack shell, a plurality of groups of intercooling fins 12 sleeved on the intercooling tube 11, and an intercooling shell fixedly connected with the intercooling fins 12;
cooling liquid for cooling is placed in the intercooling shell; the cooling liquid contacts the intercooling fin 12; one end of the intercooling shell is provided with a cooling liquid inlet, and the other end of the intercooling shell is provided with a cooling liquid outlet;
the middle cooling tube 11 is placed in the middle cooling fin 12 in an S shape;
the cooling of the air passing through the intercooler is accomplished by designing the intercooling pipe 11.
The pile entering stop valve and the pile discharging stop valve are two groups of valves with the same structure;
the stack entering stop valve comprises a valve channel 46 communicated with a stack entering pipe, a valve shell 41 fixedly connected with the valve channel 46, a valve screw rod 43 inserted in the valve shell 41, and a valve handle 42 fixedly arranged on the valve screw rod 43;
the bottom of the valve screw 43 is fixedly connected with a valve ball connecting rod 44;
a blocking valve ball 45 is fixedly arranged at the bottom of the valve ball connecting rod 44, and the blocking valve ball 45 is matched with the valve channel 46;
through designing into the stop valve of piling, control the opening and the closure of going into the heap branch road, and then realize intelligent cooling worker's work, practiced thrift the resource simultaneously.
The silencer comprises a silencing inlet pipe 21 communicated with an outlet pipe of a galvanic pile shell and an outlet pipe in a galvanic pile, a first silencing plate 22 fixedly connected with the silencing inlet pipe 21, a second silencing plate 23 arranged below the first silencing plate 22, a first silencing pipe 25 and a second silencing pipe 29 inserted in the second silencing plate 23, a three-layer silencing plate 24 arranged below the second silencing plate 23 and sleeved on the first silencing pipe 25 and the second silencing pipe 29, a silencing blocking pipe 28 inserted in the three-layer silencing plate 24 and communicated with the second silencing pipe 29, a silencing bottom plate 26 sleeved in the silencing blocking pipe 28 and arranged below the three-layer silencing plate 24, and a silencing outlet pipe 27 communicated with the silencing blocking pipe 28;
the first layer of the silencing plate 22, the second layer of the silencing plate 23 and the third layer of the silencing plate 24 are provided with honeycomb silencing holes; soundproof cotton is placed in the silencing hole;
sound outlet holes are formed in the first silencing pipe 25 and the second silencing pipe 29;
carry out the noise elimination through the silencer, and then when avoiding exhaust air, sound is great, the condition that influences other people work appears.
In a further embodiment, the air filter includes a filter housing, and a filter element disposed within the filter housing;
the filter element comprises a filter element shell 31 and a plurality of groups of filter cotton which are prevented from being arranged in the filter element shell 31;
the filter element shell 31 is provided with a plurality of groups of air inlets 33, and the end part of the filter element shell 31 is provided with a plurality of groups of air outlets 32 communicated with the air compressor.
Description of the working principle: firstly, air enters an air compressor through an air filter, the air compressor is used for supercharging the air, and the air with sufficient flow required by the reactor reaction is provided;
when air enters the air compressor through the filter, the filter element is used for filtering dust in the air, so that the dust is prevented from entering the air compressor and the electric pile to cause blockage and other adverse phenomena, and the work of the air compressor and the electric pile is influenced;
air enters the filter element shell 31 from the air inlet 33, is filtered by the filter cotton, and enters the air compressor from the air outlet 32, so that the air is filtered;
secondly, air enters an intercooler, and cooling of the air is completed through cooling liquid with relatively low temperature, so that the temperature of reaction gas entering the galvanic pile is guaranteed to be within a reasonable range, and overheating can not occur;
at the moment, air is discharged into the intercooling tube 11 by an air compressor, the air temperature is conducted to the intercooling fins 12, and then heat is absorbed by the cooling liquid, so that the air is cooled;
when the temperature of the inner bearing of the air compressor is overhigh after the air compressor works for a long time, the air passing through the intercooler enters the bearing blowing pipe of the air compressor, and the inner bearing of the air compressor is cooled;
after the air absorbs heat through the bearing of the air compressor, the air enters the intercooler to be cooled, and the electric pile shell is blown and swept for use. Then the gas flows out from a discharge pipe of the galvanic pile shell and is discharged through a silencer, and then the purging work of the galvanic pile shell is completed;
when the interior of the pile module needs to be purged, the pile inlet stop valve, the pile outlet stop valve and the back pressure valve are opened at the moment;
the air that passes through the intercooler this moment will be by in-pile admission pipe entering humidifier, through going into inside the heap stop valve gets into the pile module again, and then sweeps the pile module inside. Air enters the humidifier through the stack outlet stop valve, passes through the back pressure valve and is finally subjected to noise elimination and discharge through the silencer;
the valve screw rod 43 is driven to ascend by rotating the valve handle 42, and then the valve ball connecting rod 44 is driven to ascend, so that the blocking valve ball 45 is driven to ascend, and the blocking valve ball 45 is separated from the valve channel 46;
at the moment, air passing through the intercooler enters the humidifier through the in-pile inlet pipe, then enters the galvanic pile module through the in-pile stop valve, and is cooled;
at the moment, the stack outlet stop valve is opened, and at the moment, air enters the humidifier through the stack outlet stop valve, passes through the back pressure valve and is finally muffled and discharged through the muffler;
at this time, air enters the first layer of sound-deadening plate 22 through the sound-deadening inlet pipe 21, enters the second layer of sound-deadening plate and the third layer of sound-deadening plate 24 through the first sound-deadening pipe 25 and the second sound-deadening pipe 29, is adsorbed by soundproof cotton, enters the sound-deadening outlet pipe 27 through the sound-deadening blocking pipe 28, is discharged, and at this time, the final sound-deadening work is performed by the sound-deadening bottom plate 26.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the embodiments, and various equivalent changes can be made to the technical solution of the present invention within the technical idea of the present invention, and these equivalent changes are within the protection scope of the present invention.

Claims (7)

1. A fuel cell purge system, comprising:
an air treatment module for treating the air in a room,
the electric pile module is used for electrically connecting the electric pile module,
the galvanic pile shell is coated outside the galvanic pile module;
the in-pile branch is communicated with the air treatment module and the electric pile module;
the pile outer branch is communicated with the air treatment module and the pile shell;
a bearing cooling loop, one end of which is communicated with an in-pile inlet pipe of the in-pile branch, extends to the out-pile branch through a bearing of the air treatment module and is communicated with an electric pile shell inlet pipe of the out-pile branch;
the air treatment module comprises an intercooler communicated with the in-pile branch and the out-pile branch and an air compressor communicated with the intercooler; the in-pile branch line comprises an in-pile inlet pipe connected with the intercooler, a galvanic pile module communicated with the in-pile inlet pipe, and an in-pile outlet pipe communicated with the galvanic pile module; the out-of-stack branch comprises a stack shell inlet pipe communicated with the intercooler, a stack shell communicated with the stack shell inlet pipe, and a stack shell outlet pipe communicated with the stack shell; the bearing cooling loop comprises an air compressor bearing cooling inlet pipe communicated with the in-pile inlet pipe; and the air compressor bearing cooling inlet pipe passes through the air compressor bearing and is communicated with the intercooler.
2. A fuel cell purge system according to claim 1, wherein: the in-pile branch and the out-pile branch are communicated with a silencer;
the air treatment module further comprises an air filter communicated with the air compressor;
a humidifier and a pile entering stop valve are sequentially arranged on the pile entering pipe from a position close to the intercooler to the direction of the electric pile module;
the in-pile outlet pipe is sequentially provided with a pile outlet stop valve, a humidifier and a back pressure valve in the direction from the position close to the galvanic pile module to the silencer;
the in-pile outlet pipe is communicated with the muffler.
3. A fuel cell purge system according to claim 1, wherein: the in-pile branch and the out-pile branch are communicated with a silencer;
the stack shell outlet pipe is communicated with the muffler.
4. A fuel cell purge system according to claim 1, wherein: the intercooler comprises an intercooler pipe communicated with an inlet pipe of the electric pile shell, a plurality of groups of intercooler fins sleeved on the intercooler pipe, and an intercooler shell fixedly connected with the intercooler fins;
cooling liquid for cooling is placed in the intercooling shell; the cooling liquid contacts the intercooling fin; one end of the intercooling shell is provided with a cooling liquid inlet, and the other end of the intercooling shell is provided with a cooling liquid outlet;
the intercooling tube is placed in the intercooling fin in an S shape.
5. A fuel cell purge system according to claim 2, wherein: the pile entering stop valve and the pile discharging stop valve are two groups of valves with the same structure;
the in-pile stop valve comprises a valve channel communicated with an in-pile inlet pipe, a valve shell fixedly connected with the valve channel, a valve screw rod inserted in the valve shell, and a valve handle fixedly installed on the valve screw rod;
the bottom of the valve screw rod is fixedly connected with a valve ball connecting rod;
the bottom of the valve ball connecting rod is fixedly provided with a blocking valve ball, and the blocking valve ball is matched with the valve channel.
6. A fuel cell purge system according to claim 2, wherein: the silencer comprises a silencing inlet pipe communicated with an outlet pipe of a galvanic pile shell and an outlet pipe in the galvanic pile, a first silencing plate fixedly connected with the silencing inlet pipe, a second silencing plate arranged below the first silencing plate, a first silencing pipe and a second silencing pipe inserted in the second silencing plate, a three-layer silencing plate arranged below the second silencing plate and sleeved on the first silencing pipe and the second silencing pipe, a silencing blocking pipe inserted in the three-layer silencing plate and communicated with the second silencing pipe, a silencing bottom plate sleeved on the silencing blocking pipe and arranged below the three-layer silencing plate, and a silencing outlet pipe communicated with the silencing blocking pipe;
the first layer of the silencing plate, the second layer of the silencing plate and the third layer of the silencing plate are provided with honeycomb silencing holes; soundproof cotton is placed in the silencing hole;
and sound outlet holes are formed in the first silencing pipe and the second silencing pipe.
7. A fuel cell purge system according to claim 2, wherein: the air filter comprises a filter shell and a filter element arranged in the filter shell;
the filter element comprises a filter element shell and a plurality of groups of filter cotton which are prevented from being in the filter element shell;
the filter element shell is provided with a plurality of groups of air inlets, and the end part of the filter element shell is provided with a plurality of groups of air outlets communicated with the air compressor.
CN202110090039.7A 2021-01-22 2021-01-22 Fuel cell purging system and purging method thereof Active CN112838249B (en)

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CN110082086A (en) * 2019-05-09 2019-08-02 深圳国氢新能源科技有限公司 The test platform and test method of hydrogen fuel cell air feed equipment

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