CN114838014A - Simulation detection device for fuel cell gas supply system - Google Patents
Simulation detection device for fuel cell gas supply system Download PDFInfo
- Publication number
- CN114838014A CN114838014A CN202210449386.9A CN202210449386A CN114838014A CN 114838014 A CN114838014 A CN 114838014A CN 202210449386 A CN202210449386 A CN 202210449386A CN 114838014 A CN114838014 A CN 114838014A
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- Prior art keywords
- conduit
- guide pipe
- gas
- pipe
- fuel cell
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
- F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/48—Control
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (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 relates to a simulation detection device for a fuel cell gas supply system. The utility model provides a fuel cell gas supply system simulation detection device, its characterized in that includes gas pitcher, first pipe, second pipe, third pipe and fourth pipe, and the gas pitcher is through first pipe and ejector inlet end intercommunication, the gas pitcher gives vent to anger through second pipe and ejector and holds the intercommunication, the one end intercommunication of second pipe and third pipe, third pipe and hydrogen circulating pump inlet end intercommunication, fourth pipe both ends are used for communicateing the hydrogen circulating pump respectively and give vent to anger end and ejector inlet end, all be equipped with first instrument for detection on second pipe and the fourth pipe, all be equipped with the second instrument for detection on first pipe and the third pipe. The invention can be used for the independent detection of the ejector, the independent detection of the hydrogen circulating pump, the simulation and the performance detection of the condition when the ejector and the hydrogen circulating pump are used together, and the loop test of different gases in a fuel cell gas supply system.
Description
Technical Field
The invention relates to a simulation detection device for a fuel cell gas supply system.
Background
In the development process of the hydrogen fuel cell, the performance of the ejector or the hydrogen circulating pump needs to be detected, and the performance of the ejector or the hydrogen circulating pump is known through pressure rise change and flow change by arranging a detection instrument at the gas inlet and outlet ends of the ejector or the hydrogen circulating pump. The performance of the existing ejector and the hydrogen circulating pump are detected independently, so that the requirements are high, and the cost is high; besides the single pressurization and air supply of the ejector or the hydrogen circulating pump, the hydrogen circulating system of the hydrogen fuel cell also has a mode of using the ejector and the hydrogen circulating pump together, and a detection device capable of detecting the ejector and the hydrogen circulating pump simultaneously does not exist in the prior art.
Disclosure of Invention
The invention aims to provide a fuel cell gas supply system simulation detection device which can be used for detecting the performance of a gas supply system for detecting an ejector and a hydrogen circulating pump.
In order to achieve the purpose, the invention adopts the following technical scheme: a simulation detection device of a fuel cell gas supply system is characterized by comprising a gas tank, a first conduit, a second conduit, a third conduit and a fourth conduit, the air outlet end of the air tank is communicated with one end of a first guide pipe, the other end of the first guide pipe is used for connecting the air inlet end of the ejector, the air inlet end of the air tank is communicated with one end of a second conduit, the other end of the second conduit is used for being communicated with the air outlet end of the ejector, the second conduit is communicated with one end of a third conduit, the other end of the third conduit is used for being communicated with the gas inlet end of the hydrogen circulating pump, two ends of the fourth conduit are respectively used for communicating the gas outlet end of the hydrogen circulating pump with the gas inlet end of the ejector, the second conduit and the fourth conduit are both provided with a first detecting instrument, the connecting part of the third conduit and the second conduit is positioned at the downstream of the first detecting instrument on the second conduit, and the first conduit and the third conduit are both provided with second detecting instruments.
Before the performance of the ejector and the hydrogen circulating pump is required to be detected, the ejector is connected with the first conduit, the second conduit and the fourth conduit, and the hydrogen circulating pump is connected with the third conduit and the fourth conduit. When only the performance of the ejector needs to be detected, the hydrogen circulating pump is powered off, the gas tank is opened, and the second detection instrument on the first conduit and the first detection instrument on the second conduit are used to obtain the flow and pressure changes of gas passing through the front and back of the ejector, so that whether the performance of the ejector meets the requirements is judged. When the ejector and the hydrogen circulating pump performance in the parallelly connected fuel cell gas supply system are simulated out to needs and are detected, open the gas pitcher, gas in the gas pitcher gets into the second pipe after passing through the ejector pressure boost earlier, part gas directly flows to the gas pitcher, part gas is in addition attracted by the hydrogen circulating pump and flows to the hydrogen circulating pump, through the first instrument for detection on second instrument for detection on the third pipe and the fourth pipe, flow and the pressure variation around with gaseous through the hydrogen circulating pump, thereby judge whether the hydrogen circulating pump performance meets the requirements. The invention can be used for the independent detection of the ejector, and can also be used for the simulation and performance detection of the condition when the ejector and the hydrogen circulating pump are used together.
Preferably, the first meters for detection each include a first pressure gauge and a first flow meter, the second meter for detection on the first conduit includes a second pressure gauge and a second flow meter, and the second meter for detection on the third conduit includes a second pressure gauge. Only set up a second manometer on the third pipe, and not set up the second manometer, can monitor in order to get into the gas flow of hydrogen circulating pump through the second flowmeter on the second pipe, can reduce cost.
Preferably, a supercharger and a first throttle valve are sequentially arranged on the first guide pipe from the air inlet end to the air outlet end, and a second throttle valve is arranged on the fourth guide pipe. The supercharger and the first throttle valve are arranged to control the pressure and the flow of the gas entering the ejector, so that the device can be used for performance detection under different conditions, and the device can simulate a gas supply system of a combustion battery more truly. By providing a second throttle valve, the flow resistance at the fourth conduit can be adjusted.
Preferably, a cooler is provided in the second conduit, and the cooler is located upstream of the first meter for measurement. Through setting up the cooler to gas after the pressure boost cools down, and can get rid of the moisture in the gas after the compression, in order to protect the hydrogen circulating pump.
Preferably, a third throttling valve is provided on the second conduit, the third throttling valve being located upstream of the cooler. Through the regulation of third throttle in order to exporting gas from the ejector, can be convenient for by the cooling dewatering of pressurized back gas, also can carry out flow pressure and control to performance detection of hydrogen circulating pump under the different flow pressure condition.
Preferably, the air inlet end of the air tank is connected with an air source, and a pressure reducing valve is arranged between the air source and the air tank. The invention is additionally provided with an air pressure source, so that the device can be used for simulating an actual air supply system, the practicability of the device is further improved, and the authenticity of a detection result is improved.
Preferably, the second conduit is provided with a check valve, the check valve is positioned at the downstream of the first detection instrument on the second conduit, and the joint of the third conduit and the second conduit is positioned at the upstream of the check valve. By providing a check valve on the second conduit, backflow of gas at the gas tank to the hydrogen circulation pump side is avoided.
The invention has the advantage of being used for detecting the ejector and the hydrogen circulating pump.
Drawings
FIG. 1 is a schematic diagram of a structure of the present invention.
Detailed Description
The invention is further described below with reference to the figures and specific embodiments.
As shown in fig. 1, the simulation detection device for the fuel cell gas supply system of the present invention comprises a gas tank 100, a first conduit 11, a second conduit 12, a third conduit 13 and a fourth conduit 14, wherein a gas outlet end of the gas tank 100 is communicated with one end of the first conduit 11, the other end of the first conduit 11 is used for connecting a gas inlet end of an injector 2, a gas inlet end of the gas tank 100 is communicated with one end of the second conduit 12, the other end of the second conduit 12 is used for communicating a gas outlet end of the injector 2, the second conduit 12 is communicated with one end of the third conduit 13, the other end of the third conduit 13 is used for communicating a gas inlet end of a hydrogen circulating pump 3, two ends of the fourth conduit 14 are respectively used for communicating a gas outlet end of the hydrogen circulating pump 3 and a gas inlet end of the injector 2, the second conduit 12 and the fourth conduit 14 are both provided with a first detection instrument, a connection position of the third conduit 13 and the second conduit 12 is located at a downstream of the first detection instrument on the second conduit 12, the first conduit 11 and the third conduit 13 are provided with a second detecting instrument. Wherein the first meters for detection of the second conduit 12 and the fourth conduit 14 each comprise a first pressure gauge 21 and a first flow meter 22, the second meters for detection of the first conduit 11 comprise a second pressure gauge 23 and a second flow meter 24, and the second meters for detection of the third conduit 13 comprise only a second pressure gauge 23. Wherein, the air inlet end of the air tank 100 is connected with an air source 200, and a pressure reducing valve 101 is arranged between the air source 200 and the air tank 100. Wherein a first pressure gauge 21 is located upstream of the first flow meter 22 and a second pressure gauge 23 on the first conduit 11 is located upstream of the second flow meter 24 on the first conduit.
Wherein, the first conduit 11 is provided with a supercharger 31 and a first throttle valve 32 in sequence from the air inlet end to the air outlet end, and the fourth conduit 14 is provided with a second throttle valve 33. The second pipe 12 is provided with a cooler 34 and a third throttle valve 35, the cooler 34 being located upstream of the first meter for test, the third throttle valve 35 being located upstream of the cooler 34. The second conduit 12 is further provided with a check valve 36, the check valve 36 is located downstream of the first meter on the second conduit 12, and the junction of the third conduit 13 and the second conduit 12 is located upstream of the check valve 36.
The invention can detect the performance of the ejector and the hydrogen circulating pump, and can also lead the gas source to output different gases for loop test of gases such as hydrogen, helium or air and the like in the fuel cell gas supply system. Before the performance of the ejector and the hydrogen circulating pump is required to be detected, the ejector is connected with the first conduit, the second conduit and the fourth conduit, and the hydrogen circulating pump is connected with the third conduit and the fourth conduit.
The gas tank, the first conduit, the ejector to be detected and the second conduit form a main loop, one end of the hydrogen circulating pump is communicated with the second conduit, and the other end of the hydrogen circulating pump is communicated with the input end of the ejector to form an auxiliary loop. The gas is led out from the gas source, is decompressed by the decompression valve, enters the gas tank for pressure stabilization, enters the main loop, is pressurized by the supercharger, and is then adjusted and input into the ejector after flow and pressure monitoring. The gas is output by the ejector, the flow and the pressure are regulated and monitored, the gas enters the cooler, the gas is divided into two parts after being cooled, one part of the gas returns to the main loop through the one-way valve to continue to enter the circulation, and the other part of the gas enters the auxiliary loop to circulate.
And part of the gas passing through the cooler enters the auxiliary loop under the suction force of the hydrogen circulating pump, the pressure is monitored at the gas inlet end of the hydrogen circulating pump, the flow is regulated and the flow and the pressure are monitored at the gas outlet end of the hydrogen circulating pump, and then the gas is mixed with the gas in the main loop and then is output by the ejector to circulate.
The injector can be independently detected through the first detection instrument and the second detection instrument, the hydrogen circulating pump can be independently detected, the injector and the hydrogen circulating pump can be used for simulating the conditions and detecting the performance when the injector and the hydrogen circulating pump are used together, and the injector and the hydrogen circulating pump can also be used for loop tests of different gases in a fuel cell gas supply system.
Claims (7)
1. A simulation detection device of a fuel cell gas supply system is characterized by comprising a gas tank, a first guide pipe, a second guide pipe, a third guide pipe and a fourth guide pipe, wherein the gas outlet end of the gas tank is communicated with one end of the first guide pipe, the other end of the first guide pipe is used for connecting the gas inlet end of an ejector, the gas inlet end of the gas tank is communicated with one end of the second guide pipe, the other end of the second guide pipe is used for being communicated with the gas outlet end of the ejector, the second guide pipe is communicated with one end of the third guide pipe, the other end of the third guide pipe is used for being communicated with the gas inlet end of a hydrogen circulating pump, the two ends of the fourth guide pipe are respectively used for communicating the gas outlet end of the hydrogen circulating pump with the gas inlet end of the ejector, the second guide pipe and the fourth guide pipe are respectively provided with a first detection instrument, the joint of the third guide pipe and the second guide pipe is positioned at the downstream of the first detection instrument on the second guide pipe, and the first guide pipe and the third guide pipe are respectively provided with a second instrument for detection.
2. The fuel cell air supply system simulation test device according to claim 1, wherein the first meters each comprise a first pressure gauge and a first flow meter, the second meter on the first conduit comprises a second pressure gauge and a second flow meter, and the second meter on the third conduit comprises a second pressure gauge.
3. The simulation test device for the air supply system of the fuel cell as claimed in claim 1, wherein the first guide pipe is provided with a supercharger and a first throttle valve in sequence from the air inlet end to the air outlet end, and the fourth guide pipe is provided with a second throttle valve.
4. The fuel cell air supply system simulation test device of claim 1, wherein a cooler is provided on the second conduit, the cooler being located upstream of the first instrumentation.
5. The fuel cell gas supply system simulation test device of claim 4, wherein a third throttle is provided on the second conduit, the third throttle being located upstream of the cooler.
6. The simulation test device for the gas supply system of the fuel cell as claimed in claim 1, wherein the gas inlet end of the gas tank is connected with a gas source, and a pressure reducing valve is arranged between the gas source and the gas tank.
7. The fuel cell air supply system simulation test device as set forth in claim 1, wherein the second conduit is provided with a check valve, the check valve is located downstream of the first instrumentation on the second conduit, and a junction of the third conduit and the second conduit is located upstream of the check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210449386.9A CN114838014A (en) | 2022-04-27 | 2022-04-27 | Simulation detection device for fuel cell gas supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210449386.9A CN114838014A (en) | 2022-04-27 | 2022-04-27 | Simulation detection device for fuel cell gas supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114838014A true CN114838014A (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210449386.9A Pending CN114838014A (en) | 2022-04-27 | 2022-04-27 | Simulation detection device for fuel cell gas supply system |
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| Country | Link |
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| CN (1) | CN114838014A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117352784A (en) * | 2023-12-06 | 2024-01-05 | 江西五十铃汽车有限公司 | System and method for testing hydrogen component of fuel cell for vehicle |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1289039A2 (en) * | 2001-09-03 | 2003-03-05 | Renault s.a.s. | Cooling system with ejector for electric vehicle |
| JP2004031232A (en) * | 2002-06-27 | 2004-01-29 | Nissan Motor Co Ltd | Fuel cell system |
| JP2008004467A (en) * | 2006-06-26 | 2008-01-10 | Toshiba Fuel Cell Power Systems Corp | Fuel cell power generation system |
| JP2014175056A (en) * | 2013-03-06 | 2014-09-22 | Aisan Ind Co Ltd | Fuel cell system |
| CN111578980A (en) * | 2020-05-15 | 2020-08-25 | 一汽解放汽车有限公司 | Multifunctional test bench for fuel cell hydrogen system |
| CN211978313U (en) * | 2020-10-19 | 2020-11-20 | 深圳氢时代新能源科技有限公司 | Fuel cell gas supply system part test bench |
| CN113007083A (en) * | 2021-02-24 | 2021-06-22 | 一汽解放汽车有限公司 | Hydrogen circulating pump test system |
| CN113629275A (en) * | 2021-07-30 | 2021-11-09 | 华中科技大学 | Proton exchange membrane fuel cell double-ejector circulating system |
| CN215118965U (en) * | 2021-01-12 | 2021-12-10 | 浙江智博能源科技有限公司 | Hydrogen return device for fuel cell hydrogen |
| CN216120395U (en) * | 2021-08-30 | 2022-03-22 | 深圳市氢蓝时代动力科技有限公司 | Test system for hydrogen circulation device of fuel cell |
| CN114354162A (en) * | 2021-12-29 | 2022-04-15 | 新源动力股份有限公司 | System and method for testing hydrogen system sub-component for fuel cell system |
-
2022
- 2022-04-27 CN CN202210449386.9A patent/CN114838014A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1289039A2 (en) * | 2001-09-03 | 2003-03-05 | Renault s.a.s. | Cooling system with ejector for electric vehicle |
| JP2004031232A (en) * | 2002-06-27 | 2004-01-29 | Nissan Motor Co Ltd | Fuel cell system |
| JP2008004467A (en) * | 2006-06-26 | 2008-01-10 | Toshiba Fuel Cell Power Systems Corp | Fuel cell power generation system |
| JP2014175056A (en) * | 2013-03-06 | 2014-09-22 | Aisan Ind Co Ltd | Fuel cell system |
| CN111578980A (en) * | 2020-05-15 | 2020-08-25 | 一汽解放汽车有限公司 | Multifunctional test bench for fuel cell hydrogen system |
| CN211978313U (en) * | 2020-10-19 | 2020-11-20 | 深圳氢时代新能源科技有限公司 | Fuel cell gas supply system part test bench |
| CN215118965U (en) * | 2021-01-12 | 2021-12-10 | 浙江智博能源科技有限公司 | Hydrogen return device for fuel cell hydrogen |
| CN113007083A (en) * | 2021-02-24 | 2021-06-22 | 一汽解放汽车有限公司 | Hydrogen circulating pump test system |
| CN113629275A (en) * | 2021-07-30 | 2021-11-09 | 华中科技大学 | Proton exchange membrane fuel cell double-ejector circulating system |
| CN216120395U (en) * | 2021-08-30 | 2022-03-22 | 深圳市氢蓝时代动力科技有限公司 | Test system for hydrogen circulation device of fuel cell |
| CN114354162A (en) * | 2021-12-29 | 2022-04-15 | 新源动力股份有限公司 | System and method for testing hydrogen system sub-component for fuel cell system |
Non-Patent Citations (1)
| Title |
|---|
| 汪飞杰, 余意, 薛进营, 陈明: "燃料电池系统台架试验故障与分析", 《上海汽车》, pages 3 - 6 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117352784A (en) * | 2023-12-06 | 2024-01-05 | 江西五十铃汽车有限公司 | System and method for testing hydrogen component of fuel cell for vehicle |
| CN117352784B (en) * | 2023-12-06 | 2024-04-09 | 江西五十铃汽车有限公司 | System and method for testing hydrogen component of fuel cell for vehicle |
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