CN220366967U - Fuel cell air tightness test system - Google Patents
Fuel cell air tightness test system Download PDFInfo
- Publication number
- CN220366967U CN220366967U CN202321713379.1U CN202321713379U CN220366967U CN 220366967 U CN220366967 U CN 220366967U CN 202321713379 U CN202321713379 U CN 202321713379U CN 220366967 U CN220366967 U CN 220366967U
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- valve
- pressure sensor
- air
- fuel cell
- pipeline
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- 238000012360 testing method Methods 0.000 title claims abstract description 81
- 239000000446 fuel Substances 0.000 title claims abstract description 45
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000001257 hydrogen Substances 0.000 claims abstract description 56
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 56
- 239000000110 cooling liquid Substances 0.000 claims abstract description 16
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 239000002826 coolant Substances 0.000 claims description 20
- 239000007789 gas Substances 0.000 description 17
- 230000005465 channeling Effects 0.000 description 10
- 238000004891 communication Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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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- Fuel Cell (AREA)
Abstract
The utility model discloses a fuel cell air tightness test system, which comprises: the hydrogen pipeline is provided with a first valve, a first flowmeter and a first pressure sensor; the air pipeline is provided with a second valve, a second flowmeter and a second pressure sensor; the cooling liquid pipeline is provided with a third valve and a third pressure sensor; the main pipeline is provided with a pressure regulating valve and a main valve; the second port of the hydrogen pipeline, the second port of the air pipeline and the second port of the cooling liquid pipeline are communicated with the air outlet of the main pipeline. The test system of the utility model is specially used for testing the air tightness of the fuel cell. The hydrogen system, the air system and the cooling liquid system can be tested independently, and any two or three systems can be tested. Convenient to use, test is nimble. In addition, the air tightness is tested through the pressure sensor and the flowmeter, so that the test precision is higher.
Description
Technical Field
The utility model relates to the technical field of fuel cell air tightness test, in particular to a fuel cell air tightness test system.
Background
Most of the existing test benches for testing the air tightness are not specifically designed for fuel cells. These test benches for testing the tightness are not designed at first, and therefore, the test benches for testing the tightness of the fuel cell have other functions which are not used in the test of the tightness of the fuel cell, thus causing idle waste of resources. Some systems for testing the air tightness of fuel cells are temporarily assembled, and the measurement accuracy cannot be ensured.
Therefore, how to design a fuel cell air tightness test system, which is specially used for testing the air tightness of the fuel cell, has high test precision, and is a critical problem to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims to provide a fuel cell air tightness test system which is specially used for testing the air tightness of a fuel cell and has higher test precision. In order to achieve the above purpose, the following technical scheme is provided:
a fuel cell tightness test system comprising:
the first port of the hydrogen pipeline is communicated with a hydrogen system in the fuel cell, and the hydrogen pipeline is provided with a first valve, a first flowmeter and a first pressure sensor;
an air pipeline, a first port of which is communicated with an air system in the fuel cell, and a second valve, a second flowmeter and a second pressure sensor are arranged on the air pipeline;
a first port of the cooling liquid pipeline is communicated with a cooling liquid system in the fuel cell, and a third valve and a third pressure sensor are arranged on the cooling liquid pipeline;
the main pipeline is provided with a pressure regulating valve and a main valve;
the second port of the hydrogen pipeline, the second port of the air pipeline and the second port of the cooling liquid pipeline are communicated with the air outlet of the main pipeline.
Preferably, the hydrogen gas pipeline and the air pipeline are connected in parallel, and the hydrogen gas pipeline and the air pipeline are connected in parallel.
Preferably, a total pressure sensor is further arranged on the main pipeline.
Preferably, the pressure regulating valve is a proportional valve.
Preferably, the system further comprises a controller, wherein the first valve, the second valve, the third valve, the total valve and the pressure release valve are all in communication connection with the controller through control lines.
Preferably, the first flowmeter, the first pressure sensor, the second flowmeter, the second pressure sensor and the third pressure sensor are all in communication connection with the controller through signal lines.
Preferably, the first pressure sensor is located downstream of the first valve, the second pressure sensor is located downstream of the second valve, and the third pressure sensor is located downstream of the third valve.
Preferably, the first flow meter is located downstream of the first valve, the second flow meter is located downstream of the second valve, and the third flow meter is located downstream of the third valve.
According to the technical scheme, the fuel cell tightness test system provided by the utility model is specially used for testing the fuel cell tightness. The hydrogen system, the air system and the cooling liquid system can be tested independently, and any two or three systems can be tested. Convenient to use, test is nimble. In addition, the air tightness is tested through the pressure sensor and the flowmeter, so that the test precision is higher.
Drawings
In order to more clearly illustrate the solution of the embodiments of the present utility model, the following description will briefly explain the drawings needed to be used in the embodiments, it being evident that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a fuel cell tightness test system according to an embodiment of the present utility model.
Wherein 210 is a first pressure sensor, 209 is a second pressure sensor, 208 is a third pressure sensor, 205 is a first valve, 204 is a second valve, 203 is a third valve, 207 is a first flow meter, 206 is a second flow meter, 103 is a hydrogen pipe, 104 is an air pipe, 105 is a coolant pipe, 102 is a main pipe, 202 is a main valve, 212 is a main pressure sensor, 201 is a proportional valve, 106 is a pressure relief pipe, 211 is a pressure relief valve, 301 is a controller, 302 is a control line, and 303 is a signal transmission line.
Detailed Description
The utility model discloses a fuel cell air tightness test system which is specially used for testing the air tightness of a fuel cell and has higher test precision.
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
The utility model discloses a fuel cell air tightness test system, which comprises: a hydrogen pipe 103, an air pipe 104, a coolant pipe 105, and a main pipe 102. Wherein a first port of the hydrogen conduit 103 is in communication with a hydrogen system in the fuel cell. The hydrogen pipe 103 is provided with a first valve 205, a first flowmeter 207, and a first pressure sensor 210. The first valve 205 is used for controlling the on-off of the hydrogen pipeline 103. The first flow meter 207 is used to test the flow of gas through the hydrogen conduit 103. The first pressure sensor 210 is used to detect the gas pressure within the hydrogen pipe 103.
A first port of the air conduit 104 is in communication with an air system in the fuel cell. The air duct 14 is provided with a second valve 204, a second flowmeter 206, and a second pressure sensor 209. The second valve 204 is used to control the on-off of the air duct 104. The second flow meter 206 is used to test the flow of gas through the air duct 104. The second pressure sensor 209 is for detecting the gas pressure within the air duct 104.
A first port of the coolant line 105 is in communication with a coolant system in the fuel cell. The coolant pipe 105 is provided with a third valve 203 and a third pressure sensor 208. The third valve 203 is used to control the on-off of the coolant pipe 105. The third pressure sensor 208 is used to detect the pressure in the coolant pipe 105.
The main line 102 is provided with a pressure regulating valve and a main valve 202. The second port of the hydrogen pipe 103, the second port of the air pipe 104 and the second port of the coolant pipe 105 are all communicated with the air outlet of the main pipe.
Further, a pressure relief conduit 106 is added. The pressure release pipe 106 is provided with a pressure release valve 211. The second port of the hydrogen line 103, the second port of the air line 104, and the second port of the coolant line 105 can all be in communication with the pressure relief line 106. And a pressure relief conduit 106 is provided in parallel with the main conduit 102.
If the tightness test is to be carried out separately for the hydrogen system, the air duct 104 and the coolant duct 105 are shut off. Then, gas is introduced into the hydrogen pipe 103 and the hydrogen system through the main pipe 102, and the gas pressure and the gas flow rate in the hydrogen pipe 103 are recorded through the first pressure sensor 210 and the first flow meter 207, so that the gas tightness of the hydrogen system is obtained. After the detection is finished, the pressure is relieved through the pressure relief pipeline 106.
If the hydrogen system and the air system are to be tested for tightness at the same time, the coolant pipe 105 is shut off. Then, gas is introduced into the hydrogen pipe 103, the hydrogen system, the air pipe 104 and the air system through the main pipe 102, and the pressure and the flow rate of the gas in the hydrogen pipe 103 are recorded through the first pressure sensor 210 and the first flow meter 207. The gas pressure and flow rate in the air pipe 104 are recorded by the second pressure sensor 209 and the second flow meter 206, thereby obtaining the tightness of the hydrogen system and the air system.
The fuel cell air tightness test system provided by the utility model is specially used for testing the air tightness of the fuel cell. The hydrogen system, the air system and the cooling liquid system can be tested independently, and any two or three systems can be tested. Convenient to use, test is nimble. In addition, the air tightness is tested through the pressure sensor and the flowmeter, so that the test precision is higher.
The gas pressure input at the time of detection was different for each fuel cell. And, for the same fuel cell, the gas pressure required for the hydrogen system and the air system at the time of the overall test is greater than the air pressure at the time of the separate test of the hydrogen system and the air system. Therefore, before testing, it is first necessary to adjust the pressure regulating valve on the main pipe 102 to the desired pressure value. In a specific embodiment, a total pressure sensor 212 is also provided on the main pipe 102, the total pressure sensor 212 being used to display the pressure value in the main pipe 102.
Further, the pressure regulating valve is preferably a proportional valve 201. The proportional valve 201 can be opened at any angle as required, and in addition, the proportional valve is convenient for electric control.
In the case of performing the overall air tightness test on the entire fuel cell, the pressure maintaining test is preferably selected. That is, after the gas is introduced into the hydrogen system, the air system and the coolant system, the first valve 205, the second valve 204 and the third valve 203 are closed, so that the hydrogen system and the hydrogen pipeline 103 form a closed structure, the air system and the air pipeline 104 form a closed structure, and the coolant system and the coolant pipeline 105 form a closed structure. A determination of the air tightness is then made based on the variation values of the first pressure sensor 210, the second pressure sensor 209, and the third pressure sensor 208. Thus, in this embodiment, the first pressure sensor 210 is disposed downstream of the first valve 205, the second pressure sensor 209 is disposed downstream of the second valve 204, and the third pressure sensor 208 is disposed downstream of the third valve 203.
Further, a first flow meter 207 may also be provided downstream of the first valve 205 and a second flow meter 206 may be provided downstream of the second valve 204.
The fuel cell tightness test system can automatically test through the controller. The specific design scheme is as follows: the first valve 205, the second valve 204, the third valve 203, the main valve 202, and the relief valve 211 are all communicatively connected to the controller 301 via control lines. That is, the controller 301 can control the opening and closing of the first valve 205, the second valve 20, the third valve 203, the total valve 202, and the relief valve 211 according to an input program.
The first flow meter 207, the first pressure sensor 210, the second flow meter 206, the second pressure sensor 209, and the third pressure sensor 208 are all communicatively connected to the controller 301 via signal lines. The controller will automatically record the values of the first flow meter 207, the first pressure sensor 210, the second flow meter 206, the second pressure sensor 209, and the third pressure sensor 208. Thus, the intellectualization of the fuel cell air tightness test system is realized.
The detailed steps of the hydrogen air channeling test, the whole leakage test and the hydrogen air to cooling liquid channeling test are described in detail below.
And (3) a hydrogen air channeling test step: when the hydrogen air channeling test is performed, the controller 301 controls the closing of the main valve 202, the closing of the pressure relief valve 211, the closing of the third valve 203 on the coolant pipe 105, the closing of the second valve 204 on the air pipe 104, and the opening of the first valve 205 on the hydrogen pipe 103. The controller 301 controls the pressure after the proportional valve 201 to be adjusted to the target pressure value. After the pressure setting is completed, the test pipeline connection is confirmed to be correct. The test is started and the total valve 202 is controlled to be opened by the controller 301, and at the same time the controller 301 starts recording the flow value of the first flow meter 207 and the pressure value of the first pressure sensor 210 on the hydrogen pipe 103. After the flow value of the first flow meter 207 stabilizes, the test is ended after a specified time of the test. After the test is completed, the controller 301 controls to close the main valve 202, then opens the pressure release valve 211, and discharges the gas in the hydrogen system, so as to complete the hydrogen air channeling test. After the flow value of the first flow meter 207 is stabilized, if the flow value of the first flow meter 207 is greater than the set value, it is indicated that the channeling amount between the hydrogen system and the air system exceeds the safety requirement, and the product is proved to be unacceptable. If the flow rate value of the first flow meter 207 is smaller than the set value, it is indicated that the amount of channeling between the hydrogen system and the air system is within a safe range, and the product is proved to be excellent in air tightness.
And (3) overall air tightness testing: when the overall air tightness test is started, the controller 301 first controls to open the third valve 203, the second valve 204, the first valve 205, close the main valve 202, and close the relief valve 211. The controller 301 then controls the proportional valve 201 to adjust the pressure to the target pressure value. After confirming that the pipeline connection of the test system is correct, the test can be started. The controller 301 controls the total valve 202 to be opened, data is recorded, and after the flow is stabilized, the controller 301 controls the third valve 203, the second valve 204 and the first valve 205 to be closed, and then the total valve 202 is closed. After the test time of 20min, the controller 301 directly saves the data of the first pressure sensor 210, the second pressure sensor 209, and the third pressure sensor 208. At the end of the test, the controller 301 controls the third valve 203, the second valve 204, and the first valve 205 to be opened, and then opens the pressure release valve 211 to discharge the gases in the hydrogen system, the air system, and the coolant system. The pressure maintaining test is adopted in the test. If the variation of the first pressure sensor 210 exceeds the set value, the air tightness of the hydrogen system is failed; if the amount of change of the first pressure sensor 210 does not exceed the set value, it indicates that the tightness of the hydrogen system is acceptable. If the amount of change of the second pressure sensor 209 exceeds the set value, it is indicated that the air tightness of the air system is not qualified; if the amount of change of the second pressure sensor 209 does not exceed the set value, it indicates that the air tightness of the air system is acceptable. If the amount of change of the third pressure sensor 208 exceeds the set value, it is indicated that the air tightness of the coolant system is not acceptable; if the amount of change in the third pressure sensor 208 does not exceed the set point, then this indicates that the coolant system is air tight.
And the hydrogen air system performs channeling test on the cooling liquid system: the controller 301 opens the second valve 204, the first valve 205, closes the main valve 202, the third valve 203 on the coolant line, and the relief valve 211. The controller 301 then controls the pressure of the proportional valve 201 to be adjusted to the target pressure. After confirming that the test pipeline is connected correctly, starting to perform the test. The test starts and the controller 301 controls the total valve 202 to open and starts recording the values of the second flowmeter 206, the first flowmeter 207, the second pressure sensor 209, and the first pressure sensor 210. After the flow rates of the first flow meter 207 and the second flow meter 206 were stabilized for 3 minutes, the controller 301 saved the recorded data, ending the test. After the test is completed, the controller 301 controls the main valve 202 to be closed, opens the pressure release valve 211, and discharges the gases in the hydrogen system and the air system. If the flow values of the first flow meter 207 and the second flow meter 206 are smaller than the set values, it is indicated that the amount of channeling between the hydrogen system and the air system and the cooling system is within a safe range, and the product is acceptable. If the flow values of the first flow meter 207 and the second flow meter 206 are greater than the set values, the channeling amount between the hydrogen system and the air system and the cooling liquid system exceeds the safety range, and the product is proved to be unqualified.
Finally, it is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A fuel cell air tightness test system, comprising:
the first port of the hydrogen pipeline is communicated with a hydrogen system in the fuel cell, and the hydrogen pipeline is provided with a first valve, a first flowmeter and a first pressure sensor;
an air pipeline, a first port of which is communicated with an air system in the fuel cell, and a second valve, a second flowmeter and a second pressure sensor are arranged on the air pipeline;
a first port of the cooling liquid pipeline is communicated with a cooling liquid system in the fuel cell, and a third valve and a third pressure sensor are arranged on the cooling liquid pipeline;
the main pipeline is provided with a pressure regulating valve and a main valve;
the second port of the hydrogen pipeline, the second port of the air pipeline and the second port of the cooling liquid pipeline are communicated with the air outlet of the main pipeline.
2. The fuel cell tightness test system according to claim 1, further comprising a pressure relief pipe, wherein a pressure relief valve is provided on the pressure relief pipe, the second port of the hydrogen pipe, the second port of the air pipe, and the second port of the coolant pipe are all capable of communicating with the pressure relief pipe, and the pressure relief pipe is provided in parallel with the main pipe.
3. The fuel cell tightness test system according to claim 1, wherein a total pressure sensor is further provided on said main pipe.
4. The fuel cell tightness test system according to claim 1, wherein said pressure regulating valve is a proportional valve.
5. The fuel cell tightness test system according to claim 2, further comprising a controller, wherein said first valve, said second valve, said third valve, said total valve, said pressure relief valve are all communicatively connected to said controller via control lines.
6. The fuel cell tightness test system according to claim 5, wherein said first flow meter, said first pressure sensor, said second flow meter, said second pressure sensor, said third pressure sensor are all communicatively connected to said controller by signal lines.
7. The fuel cell tightness test system according to claim 1, wherein said first pressure sensor is located downstream of said first valve, said second pressure sensor is located downstream of said second valve, and said third pressure sensor is located downstream of said third valve.
8. The fuel cell tightness test system according to claim 1, wherein said first flow meter is located downstream of said first valve and said second flow meter is located downstream of said second valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321713379.1U CN220366967U (en) | 2023-06-30 | 2023-06-30 | Fuel cell air tightness test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321713379.1U CN220366967U (en) | 2023-06-30 | 2023-06-30 | Fuel cell air tightness test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220366967U true CN220366967U (en) | 2024-01-19 |
Family
ID=89519990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321713379.1U Active CN220366967U (en) | 2023-06-30 | 2023-06-30 | Fuel cell air tightness test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220366967U (en) |
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2023
- 2023-06-30 CN CN202321713379.1U patent/CN220366967U/en active Active
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