CN113007083A - Hydrogen circulating pump test system - Google Patents
Hydrogen circulating pump test system Download PDFInfo
- Publication number
- CN113007083A CN113007083A CN202110209673.8A CN202110209673A CN113007083A CN 113007083 A CN113007083 A CN 113007083A CN 202110209673 A CN202110209673 A CN 202110209673A CN 113007083 A CN113007083 A CN 113007083A
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- Prior art keywords
- hydrogen
- pressure
- valve
- test system
- circulation pump
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 239000001257 hydrogen Substances 0.000 title claims abstract description 125
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 125
- 238000012360 testing method Methods 0.000 title claims abstract description 79
- 230000001105 regulatory effect Effects 0.000 claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 239000007789 gas Substances 0.000 claims abstract description 41
- 210000000078 claw Anatomy 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel Cell (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a hydrogen circulating pump test system, which comprises a test loop and a gas supply branch for supplying hydrogen to the test loop; the test loop is sequentially provided with a first pressure regulating valve, a first flow detection device, a first pressure detection device, a hydrogen circulating pump, a second pressure detection device, a second pressure regulating valve, a compressor, an intercooler, a gas storage tank and a first switch valve; the hydrogen source, the pressure reducing valve and the second switch valve are sequentially arranged on the gas supply branch, and the gas supply branch is connected between the first switch valve and the first pressure regulating valve. In the hydrogen circulating pump test system, hydrogen is supplied to the test loop from the hydrogen source, the hydrogen circularly flows in the test loop, different working conditions are simulated by adjusting valves such as the pressure regulating valve and the switch valve, and the performance of the hydrogen circulating pump is tested.
Description
Technical Field
The invention relates to the technical field of circulating pump tests, in particular to a hydrogen circulating pump test system.
Background
In the automobile fuel cell field, the hydrogen circulating pump is essential important component, and the hydrogen circulating pump needs pass through the capability test before using, generally lets in hydrogen in the hydrogen circulating pump and tests the hydrogen circulating pump.
In the prior art, when the hydrogen circulating pump is tested, hydrogen is generally directly discharged after being introduced into the circulating pump, namely, the hydrogen is introduced into one end of the hydrogen circulating pump, the other end of the hydrogen circulating pump exhausts, and the hydrogen circulating pump is continuously detected by adopting a method for continuously supplying the hydrogen into the hydrogen circulating pump. This test method results in a large hydrogen usage, waste of hydrogen, and a certain risk of hydrogen emissions.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The invention aims to provide a hydrogen circulating pump testing system to solve the problems that hydrogen is directly discharged to cause hydrogen waste and test gas discharge is risky in the prior art during hydrogen circulating pump testing.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hydrogen circulating pump test system comprises a test loop and a gas supply branch for supplying hydrogen to the test loop;
the test loop is sequentially provided with a first pressure regulating valve, a first flow detection device, a first pressure detection device, a hydrogen circulating pump, a second pressure detection device, a second pressure regulating valve, a compressor, an intercooler, a gas storage tank and a first switch valve;
the hydrogen source, the reducing valve and the second switch valve are sequentially arranged on the gas supply branch, and the gas supply branch is connected between the first switch valve and the first pressure regulating valve.
As an alternative scheme of the hydrogen circulating pump testing system, a pressure release valve is further arranged on the testing loop and is arranged between the intercooler and the gas storage tank.
As an alternative of the above hydrogen circulation pump test system, the gas storage tank is provided with a third pressure detection device.
As an alternative of the above hydrogen circulation pump test system, a check valve is further disposed on the test loop, and the check valve is disposed between the gas storage tank and the first switch valve.
As an alternative of the above-mentioned hydrogen circulation pump test system, the test loop is further provided with a second flow detection device, and the second flow detection device is arranged between the first switching valve and the first pressure regulating valve.
As an alternative to the above-described hydrogen circulation pump test system, the second pressure regulating valve is a back pressure valve.
As an alternative to the above-described hydrogen circulation pump test system, the compressor is a diaphragm compressor.
As an alternative to the above-mentioned hydrogen circulation pump test system, the first pressure detection device, the second pressure detection device and the third pressure detection device are pressure sensors.
As an alternative to the above-mentioned hydrogen circulation pump test system, the first flow rate detection device and the second flow rate detection device are flow meters.
As an alternative to the above-described hydrogen circulation pump test system, the hydrogen circulation pump is a roots pump, a screw pump, a centrifugal pump, or a claw pump.
The invention has the advantages that: in the hydrogen circulating pump test system, hydrogen is supplied into the test loop from the hydrogen source, the hydrogen circularly flows in the test loop, different working conditions are simulated by adjusting valves such as the pressure regulating valve and the switch valve, and the performance of the hydrogen circulating pump is tested.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a hydrogen circulation pump test system according to the present invention.
Reference numerals:
100. testing a loop; 101. a first pressure regulating valve; 102. a first flow detection device; 103. a first pressure detection device; 104. a hydrogen circulation pump; 105. a second pressure detecting device; 106. a second pressure regulating valve; 107. a compressor; 108. an intercooler; 109. a pressure relief valve; 110. a gas storage tank; 111. a one-way valve; 112. a first on-off valve; 113. a second flow detection device; 114. a third pressure detecting device;
200. a gas supply branch; 201. a source of hydrogen gas; 202. a pressure reducing valve; 203. and a second on-off valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The meaning of the above terms in the present invention can be understood by those of ordinary skill in the art as the case may be.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The invention provides a hydrogen circulating pump testing system which is used for performing performance testing on a hydrogen circulating pump so as to ensure that the hydrogen circulating pump can meet the application standard of the hydrogen circulating pump in an automobile fuel cell. It is understood that the hydrogen circulation pump may also be used for other gases, such as helium, nitrogen, etc., and the embodiment of the present invention is described by taking hydrogen as an example.
Fig. 1 is a schematic structural diagram of an embodiment of a hydrogen circulation pump test system according to the present invention, and as shown in fig. 1, the hydrogen circulation pump test system includes a test loop 100 and a gas supply branch 200 for supplying hydrogen to the test loop 100.
As shown in fig. 1, a hydrogen source 201, a pressure reducing valve 202 and a second switch valve 203 are sequentially disposed on the gas supply branch 200, the hydrogen source 201 is, for example, a hydrogen cylinder, and the gas supply branch 200 is connected to the test loop 100, so that hydrogen in the hydrogen cylinder is delivered to the test loop 100. After passing through the pressure reducing valve 202 and the second switch valve 203, the hydrogen in the hydrogen cylinder flows into the test loop 100, since the pressure of the hydrogen in the hydrogen cylinder is high, about 12Mpa, the pressure needs to be reduced through the pressure reducing valve 202, and the second switch valve 203 is used for controlling the on-off of the gas supply branch 200, that is, controlling whether the gas supply branch 200 supplies gas for the test loop 100.
As shown in fig. 1, the test loop 100 is provided with a first pressure regulating valve 101, a first flow rate detecting device 102, a first pressure detecting device 103, a hydrogen circulating pump 104, a second pressure detecting device 105, a second pressure regulating valve 106, a compressor 107, an intercooler 108, an air tank 110, and a first on-off valve 112 in this order. As shown in fig. 1, the gas supply branch 200 is connected between the first switch valve 112 and the first pressure regulating valve 101, and after hydrogen gas is delivered from the gas supply branch 200 to the test loop 100, the hydrogen gas in the test loop 100 sequentially flows through the first pressure regulating valve 101, the first flow rate detection device 102, the first pressure detection device 103, the hydrogen circulation pump 104, the second pressure detection device 105, the second pressure regulating valve 106, the compressor 107, the intercooler 108, the gas storage tank 110, and the first switch valve 112, and finally returns to the first pressure regulating valve 101, so as to realize recycling. The front end and the rear end of the hydrogen circulating pump 104 are respectively provided with a first pressure regulating valve 101 and a second pressure regulating valve 106 so as to regulate the pressure at the inlet and the outlet of the hydrogen circulating pump 104, and the performance of the hydrogen circulating pump 104 under different working conditions is tested by controlling the pressure and the flow.
After a certain amount of hydrogen is introduced into the test loop 100, the second switch valve 203 of the gas supply branch 200 is closed. The hydrogen gas is pressure-regulated to the pressure required by the inlet of the hydrogen circulation pump 104 through the first pressure regulating valve 101, the inlet pressure is generally 0-1.5bar, the outlet pressure is regulated by the second pressure regulating valve 106, the first pressure regulating valve 101 can be a pressure regulating valve, and the second pressure regulating valve 106 can be a back pressure valve. The pressure before and after the hydrogen circulation pump 104 is detected by the first pressure detection device 103 and the second pressure detection device 105, and the flow rate is measured by the first flow rate detection device 102. At this time, the compressor 107 pressurizes the hydrogen pressure passing through the hydrogen circulation pump 104 to 2-3bar, and the pressurized hydrogen is cooled by the intercooler 108. The hydrogen enters a gas storage tank 110 after being pressurized and intercooled, wherein the gas storage tank 110 is a low-pressure gas storage tank 110, passes through a first switch valve 112, and then circulates through a first pressure regulating valve 101. The compressor 107 may employ a diaphragm compressor.
As shown in fig. 1, the test loop 100 is further provided with a relief valve 109, a check valve 111, and a second flow rate detection device 113, and the air tank 110 is provided with a third pressure detection device 114. The pressure relief valve 109 is arranged between the intercooler 108 and the air storage tank 110, the pressure relief valve 109 plays a role of a safety valve, and the pressure relief valve 109 can ensure that the pressure in the test loop 100 is not too high, so that the safety is ensured. The check valve 111 is disposed between the gas storage tank 110 and the first on-off valve 112, and the setting of the check valve 111 enables the hydrogen in the test loop 100 to flow in a single direction, i.e. from the gas storage tank 110 to the first on-off valve 112, but not from the first on-off valve 112 to the gas storage tank 110, so as to avoid that the test cannot be performed due to the reverse direction of the hydrogen, and avoid damaging the equipment. A second flow detection device 113 is disposed between the first switching valve 112 and the first pressure regulating valve 101 for assisting in detecting the hydrogen flow in the test loop 100. The third pressure detection means 114 may detect the pressure of the hydrogen gas in the gas storage tank 110, so that the relief valve 109 may be operated in accordance with the pressure detected by the third pressure detection means 114, and when the pressure is too high, the relief valve 109 is opened.
In the embodiment of the present invention, the first pressure detecting device 103, the second pressure detecting device 105, and the third pressure detecting device 114 may all employ pressure sensors, the first flow detecting device 102 and the second flow detecting device 113 may all employ flow meters, and the hydrogen circulating pump 104 may employ a roots pump, a screw pump, a centrifugal pump, or a claw pump.
The testing principle of the hydrogen circulating pump testing system is as follows:
when the operating condition is fixed, i.e., the test flow rate of the hydrogen circulation pump 104 is kept constant, the second on-off valve 203 is set to the closed state. The hydrogen passes through a first pressure regulating valve 101 to regulate the pressure of the hydrogen to the pressure required at the inlet of the hydrogen circulation pump 104, typically 0-1.5bar, and the outlet pressure is regulated by a second pressure regulating valve 106. The pressure before and after the hydrogen circulation pump 104 is detected by the first pressure detection device 103 and the second pressure detection device 105, and the flow rate is measured by the first flow rate detection device 102. At this time, the compressor 107 boosts the pressure of the hydrogen passing through the hydrogen circulation pump 104 to 2-3bar, cools the hydrogen after boosting through the intercooler 108, and cools the hydrogen after cooling through the pressure relief valve 109 to prevent the pressure from being too high. The hydrogen enters the gas storage tank 110 after being pressurized and cooled, passes through the check valve 111 and the first switch valve 112, the first switch valve 112 is kept in an open state, and then circulates through the first pressure regulating valve 101.
When the working condition changes, for example, the required hydrogen flow needs to be increased, the pressure reducing valve 202 is adjusted to reduce the pressure of the nitrogen output by the hydrogen source 201 to 1Mpa-2Mpa, the second switch valve 203 is opened to supplement the hydrogen to the test loop 100, the second pressure regulating valve 106 is opened, and the compression speed of the compressor 107 on the hydrogen is increased. The compressed hydrogen is cooled by the intercooler 108, and then compressed into the gas storage tank 110, and the first on-off valve 112 is closed. If the pressure detected by the third pressure detecting device 114 of the air storage tank 110 exceeds a certain value, the pressure relief valve 109 will be opened to play a role of protection. When the first flow rate detecting means 102 detects that the flow rate is supplemented to the required flow rate, the second on-off valve 203 is closed, and at the same time, the first on-off valve 112 is opened to adjust the opening degree of the first pressure regulating valve 101 to the required flow rate.
When the required hydrogen flow is to be reduced, the second on-off valve 203 is kept closed, the opening degree of the first pressure regulating valve 101 is regulated, the compression speed of the compressor 107 is reduced, the compressed hydrogen passes through the intercooler 108, and the cooled hydrogen enters the storage tank 110. At the same time, the first on-off valve 112 is closed, the first on-off valve 112 is opened when the first flow rate detecting means 102 reaches the required flow rate, and the first pressure regulating valve 101 is regulated to maintain the required flow rate.
In the hydrogen circulating pump test system, hydrogen is supplied into the test loop 100 from the hydrogen source 201, the hydrogen circularly flows in the test loop 100, different working conditions are simulated by adjusting valves such as a pressure regulating valve and a switch valve, and the performance of the hydrogen circulating pump 104 is tested.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A hydrogen circulation pump test system, comprising a test loop (100) and a gas supply branch (200) for supplying hydrogen to the test loop (100);
the testing loop (100) is sequentially provided with a first pressure regulating valve (101), a first flow detection device (102), a first pressure detection device (103), a hydrogen circulating pump (104), a second pressure detection device (105), a second pressure regulating valve (106), a compressor (107), an intercooler (108), a gas storage tank (110) and a first switch valve (112);
the hydrogen source (201), the pressure reducing valve (202) and the second switch valve (203) are sequentially arranged on the gas supply branch (200), and the gas supply branch (200) is connected to the first switch valve (112) and the space between the first pressure regulating valves (101).
2. The hydrogen circulation pump test system according to claim 1, wherein a pressure relief valve (109) is further provided on the test loop (100), and the pressure relief valve (109) is provided between the intercooler (108) and the gas storage tank (110).
3. The hydrogen circulation pump test system according to claim 1, wherein a third pressure detection means (114) is provided on the gas storage tank (110).
4. The hydrogen circulation pump test system according to claim 1, wherein a check valve (111) is further disposed on the test loop (100), and the check valve (111) is disposed between the gas storage tank (110) and the first on-off valve (112).
5. The hydrogen circulation pump test system according to claim 1, wherein the test loop (100) is further provided with a second flow detection device (113), the second flow detection device (113) being provided between the first switching valve (112) and the first pressure regulating valve (101).
6. The hydrogen circulation pump test system according to claim 1, wherein the second pressure regulating valve (106) is a back pressure valve.
7. The hydrogen circulation pump test system of claim 1, wherein the compressor (107) is a diaphragm compressor.
8. The hydrogen circulation pump test system according to claim 3, wherein the first pressure detection means (103), the second pressure detection means (105), and the third pressure detection means (114) are pressure sensors.
9. The hydrogen circulation pump test system according to claim 5, wherein the first flow rate detection means (102) and the second flow rate detection means (113) are flow meters.
10. The hydrogen circulation pump test system of claim 1, wherein the hydrogen circulation pump (104) is a roots pump, a screw pump, a centrifugal pump, or a claw pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110209673.8A CN113007083A (en) | 2021-02-24 | 2021-02-24 | Hydrogen circulating pump test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110209673.8A CN113007083A (en) | 2021-02-24 | 2021-02-24 | Hydrogen circulating pump test system |
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| Publication Number | Publication Date |
|---|---|
| CN113007083A true CN113007083A (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110209673.8A Pending CN113007083A (en) | 2021-02-24 | 2021-02-24 | Hydrogen circulating pump test system |
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| CN (1) | CN113007083A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838014A (en) * | 2022-04-27 | 2022-08-02 | 北京昆腾迈格技术有限公司 | Simulation detection device for fuel cell gas supply system |
| CN115059607A (en) * | 2022-06-23 | 2022-09-16 | 中国船舶重工集团公司第七一八研究所 | High-pressure hydrogen diaphragm compressor test device for hydrogenation station and test method thereof |
| CN116412163A (en) * | 2023-05-26 | 2023-07-11 | 浙江巴腾动力系统有限公司 | Air inlet adjusting device of hydrogen circulating pump |
| CN117723873A (en) * | 2024-02-07 | 2024-03-19 | 广东卡沃罗氢科技有限公司 | Electrolytic cell testing system and electrolytic cell testing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003178782A (en) * | 2001-12-12 | 2003-06-27 | Honda Motor Co Ltd | Hydrogen pump and fuel cell system using hydrogen pump |
| US20090280366A1 (en) * | 2008-05-06 | 2009-11-12 | Gm Global Technology Operations, Inc. | Anode loop observer for fuel cell systems |
| CN207690925U (en) * | 2018-01-15 | 2018-08-03 | 浙江衡远新能源科技有限公司 | The hydrogen gas circulating system of one proton exchanging film fuel battery |
| CN109524694A (en) * | 2018-11-29 | 2019-03-26 | 汽解放汽车有限公司 | A kind of fuel cell experiments rack |
| CN110439802A (en) * | 2019-08-08 | 2019-11-12 | 中国汽车技术研究中心有限公司 | A kind of fuel cell system hydrogen gas circulating pump test device |
| CN112392711A (en) * | 2020-11-30 | 2021-02-23 | 深圳市氢蓝时代动力科技有限公司 | Method and device for testing hydrogen circulating pump |
-
2021
- 2021-02-24 CN CN202110209673.8A patent/CN113007083A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003178782A (en) * | 2001-12-12 | 2003-06-27 | Honda Motor Co Ltd | Hydrogen pump and fuel cell system using hydrogen pump |
| US20090280366A1 (en) * | 2008-05-06 | 2009-11-12 | Gm Global Technology Operations, Inc. | Anode loop observer for fuel cell systems |
| CN207690925U (en) * | 2018-01-15 | 2018-08-03 | 浙江衡远新能源科技有限公司 | The hydrogen gas circulating system of one proton exchanging film fuel battery |
| CN109524694A (en) * | 2018-11-29 | 2019-03-26 | 汽解放汽车有限公司 | A kind of fuel cell experiments rack |
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| CN112392711A (en) * | 2020-11-30 | 2021-02-23 | 深圳市氢蓝时代动力科技有限公司 | Method and device for testing hydrogen circulating pump |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114838014A (en) * | 2022-04-27 | 2022-08-02 | 北京昆腾迈格技术有限公司 | Simulation detection device for fuel cell gas supply system |
| CN115059607A (en) * | 2022-06-23 | 2022-09-16 | 中国船舶重工集团公司第七一八研究所 | High-pressure hydrogen diaphragm compressor test device for hydrogenation station and test method thereof |
| CN115059607B (en) * | 2022-06-23 | 2023-05-12 | 中国船舶重工集团公司第七一八研究所 | High-pressure hydrogen diaphragm compressor test device for hydrogenation station and test method thereof |
| CN116412163A (en) * | 2023-05-26 | 2023-07-11 | 浙江巴腾动力系统有限公司 | Air inlet adjusting device of hydrogen circulating pump |
| CN116412163B (en) * | 2023-05-26 | 2023-09-12 | 浙江巴腾动力系统有限公司 | Air inlet adjusting device of hydrogen circulating pump |
| CN117723873A (en) * | 2024-02-07 | 2024-03-19 | 广东卡沃罗氢科技有限公司 | Electrolytic cell testing system and electrolytic cell testing method |
| CN117723873B (en) * | 2024-02-07 | 2024-06-04 | 广东卡沃罗氢科技有限公司 | Electrolytic cell testing system and electrolytic cell testing method |
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Application publication date: 20210622 |