CN212342667U - Test system for quick response capability of fuel cell hydrogen supply circulating device - Google Patents
Test system for quick response capability of fuel cell hydrogen supply circulating device Download PDFInfo
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- CN212342667U CN212342667U CN202021618543.7U CN202021618543U CN212342667U CN 212342667 U CN212342667 U CN 212342667U CN 202021618543 U CN202021618543 U CN 202021618543U CN 212342667 U CN212342667 U CN 212342667U
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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
Abstract
A test system for the quick response capability of a hydrogen supply circulating device of a fuel cell belongs to the technical field of hydrogen fuel cells. The utility model comprises a high pressure hydrogen bottle, a pressure reducing valve, a first switch valve, a gas storage tank, a first pressure regulating valve, a first three-way valve, a proportional valve, a second three-way valve, a hydrogen discharging valve and a second switch valve; the pressure reducing valve is connected with the high-pressure hydrogen bottle and the first switch valve, the hydrogen supply circulating device to be detected is connected between the first switch valve and the gas storage tank, the first pressure regulating valve is connected with the gas storage tank and the first three-way valve, one end of the first three-way valve is connected with the proportional valve, the other end of the first three-way valve is connected with the second three-way valve, one end of the second three-way valve is connected with the hydrogen discharge valve, and the other end of the second three-way valve is connected with the hydrogen supply circulating device to be detected. The utility model discloses can effectively test fuel cell hydrogen supply circulating device's quick response ability to help hydrogen supply circulating device's capability test and controller to sweep the optimization of tactics.
Description
Technical Field
The utility model relates to a hydrogen fuel cell technical field especially relates to a test system of fuel cell hydrogen supply circulating device quick response ability.
Background
In order to improve hydrogen utilization, reduce fuel cell power generation costs, and achieve higher stack performance, stack anode hydrogen is often dead-end operated. A common hydrogen dead-end technology for fuel cells is the hydrogen recycle mode.
The hydrogen circulation method can ensure the high-efficiency and stable operation of the fuel cell, and can discharge the generated water in the fuel cell to the outside of the cell, namely, the hydrogen carries the water generated in the galvanic pile out, the liquid water is separated from the hydrogen by the gas-water separation device, the hydrogen is circulated and sent back to the anode of the galvanic pile for reuse, and meanwhile, the fresh hydrogen entering the galvanic pile is humidified, so that the hydrogen utilization rate is improved. For a proton exchange membrane fuel cell in a hydrogen circulation mode, the fuel cell is ensured to be in a stable and efficient water and gas balance state by coupling optimization of various operation parameters.
The hydrogen circulation operation mode can force hydrogen to be uniformly distributed in the cell, and the service life of the fuel cell is prolonged. Similarly, during the hydrogen circulation, impurities in the fuel hydrogen and the N2 in the cathode air and water generated by the reaction permeate the proton exchange membrane to accumulate at the anode, which causes the reduction of the hydrogen partial pressure after long-term operation, and the generated liquid water can obstruct the contact of the hydrogen with the catalyst layer, which causes the voltage drop of the cell stack, even the partial H2 starvation can even cause the electrochemical corrosion of the MEA, which leads to the irreversible reduction of the cell stack performance, therefore, the hydrogen discharge solenoid valve needs to be opened intermittently to discharge the exhaust gas (water) during the operation process, and the impurities, N2 and water accumulated at the anode are discharged, but the process also causes the waste of a part of the hydrogen. Therefore, the efficient hydrogen utilization technology needs to optimize the operation pressure and the operation temperature, match the valve flow coefficient with the system operation conditions, and optimize the purging duration, purging interval, purging flow, purging volume and the like of the opened valve, so as to improve the utilization efficiency of hydrogen on the premise of not losing the performance of the cell stack.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that above-mentioned prior art exists, provide a test system of fuel cell hydrogen supply circulating device quick response ability, its quick response ability that can effectively test fuel cell hydrogen supply circulating device to help hydrogen supply circulating device's capability test and controller to sweep the optimization of tactics.
The utility model aims at realizing through the following technical scheme:
a test system for the quick response capability of a fuel cell hydrogen supply circulating device comprises a high-pressure hydrogen bottle, a pressure reducing valve, a first switch valve, a gas storage tank, a first pressure regulating valve, a first three-way valve, a proportional valve, a second three-way valve, a hydrogen exhaust valve and a second switch valve; the high-pressure hydrogen bottle and first switch valve are connected to the relief pressure valve, connect the hydrogen supply circulating device that awaits measuring between first switch valve and the gas holder, gas holder and first three-way valve are connected to first pressure regulating valve, the one end of first three-way valve is connected the proportional valve, the other end of first three-way valve is connected the second three-way valve, the one end of second three-way valve is connected the hydrogen discharge valve, the other end of second three-way valve with it awaits measuring to connect between the hydrogen supply circulating device and awaits measuring the hydrogen device.
The utility model discloses an internal environment and the hydrogen consumption of galvanic pile are simulated to the proportional valve of gas holder, first pressure regulating valve and simulation consumption, and hydrogen pressure when simulating fuel cell system operation through the hydrogen discharge valve is undulant to establish the condition of required test fast, ensure the efficiency of test and the reliability of test result.
Preferably, a second pressure regulating valve is arranged between the second three-way valve and the hydrogen return device to be tested. The second pressure regulating valve is used for simulating backpressure (mainly pressure loss of the steam-water separator and pipe loss of the connecting pipeline) from the outlet of the galvanic pile to the inlet of the hydrogen supply circulating device, so that the accuracy of a test result is improved.
Preferably, one end of the second pressure regulating valve is connected with the second three-way valve, and the other end of the second pressure regulating valve is connected with a third three-way valve; one end of the third three-way valve is connected with a second switch valve and a hydrogen returning device of the ejector to be tested, and the other end of the third three-way valve is connected with a third switch valve and a hydrogen returning device of a hydrogen returning pump to be tested. The structure provides two paths of test channels, and the performance of the ejector hydrogen return device and the performance of the hydrogen return pump hydrogen return device can be respectively tested by controlling the opening and closing of the two switch valves.
Preferably, the first flowmeter, the first pressure gauge and the first thermometer are arranged between the first switch valve and the hydrogen supply circulating device to be tested. For detecting the flow, pressure and temperature of the working gas.
As the utility model discloses it is preferred, be equipped with second pressure gauge and second thermometer between hydrogen supply circulating device and the gas holder that awaits measuring. The device is used for detecting the gas pressure and the temperature at the outlet of the hydrogen supply circulating device to be detected.
As the utility model discloses it is preferred, be equipped with second flowmeter, third pressure gauge and third thermometer between second ooff valve and the ejector hydrogen return device that awaits measuring. The device is used for detecting the flow, pressure and temperature of gas before the gas enters the ejector hydrogen returning device to be detected.
Preferably, a third flowmeter, a fourth pressure gauge and a fourth thermometer are arranged between the third switch valve and the hydrogen returning device of the hydrogen returning pump to be tested. The device is used for detecting the flow, pressure and temperature of the gas before the gas enters the hydrogen returning device to be detected.
Preferably, the third switch valve and the hydrogen returning device of the hydrogen returning pump to be tested are provided with a pressure sensor. For feeding back gas pressure data to the hydrogen-returning pump hydrogen-returning device so that the hydrogen-returning pump hydrogen-returning device can regulate proper output power.
The utility model has the advantages that: the internal environment and hydrogen consumption of the galvanic pile are simulated through the gas storage tank, the pressure regulating valve and the consumption simulating proportional valve, the hydrogen pressure fluctuation during the operation of the fuel cell system is simulated through the hydrogen discharge valve, and the performance of the ejector hydrogen return device and the performance of the hydrogen return pump hydrogen return device can be respectively tested through two paths of testing channels. And, the utility model discloses can accomplish hydrogen supply circulating device's the temperature, the pressure condition of returning hydrogen mouth and export fast and establish, convenient to use adjusts the precision height, and it is fast to establish the experiment condition.
Drawings
Fig. 1 is a schematic diagram of a system for testing the quick response capability of a fuel cell hydrogen supply circulation device according to the present invention.
1-a pressure reducing valve; 2-a first on-off valve; 3-hydrogen supply circulating device to be tested; 4-a gas storage tank; 5-a first pressure regulating valve; 6-a proportional valve; 7-a hydrogen discharge valve; 8-a second pressure regulating valve; 9-a second on-off valve; 10-a third on-off valve; 11-a first flow meter; 12-a first pressure gauge; 13-a first thermometer; 14-a second pressure gauge; 15-a second thermometer; 16-a second flow meter; 17-a third pressure gauge; 18-a third thermometer; 19-a third flow meter; 20-a fourth pressure gauge; 21-a fourth thermometer; 22-a pressure sensor; 23-a first three-way valve; 24-a second three-way valve; 25-third three-way valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a system for testing the quick response capability of a fuel cell hydrogen supply circulation device supplies gas from a high-pressure hydrogen bottle, and is connected with a first switch valve 2 through a pressure reducing valve 1; the first switch valve 2 is connected with an air inlet of the hydrogen supply circulating device 3 to be detected, and a first flowmeter 11, a first pressure gauge 12 and a first thermometer 13 are arranged between the first switch valve and the air inlet to detect the flow, the pressure and the temperature of the working gas respectively; the outlet of the hydrogen supply circulating device 3 to be tested is connected with the gas storage tank 4, a second pressure gauge 14 and a second temperature gauge 15 are arranged between the gas storage tank and the gas storage tank, and the pressure and the temperature of the outlet of the hydrogen supply circulating device 3 to be tested are respectively tested; the outlet of the gas storage tank is connected with a first pressure regulating valve 5, and backpressure change inside the galvanic pile is simulated through the first pressure regulating valve 5; an outlet of the first pressure regulating valve 5 is connected with a first three-way valve 23, and one outlet of the first three-way valve 23 is connected with a proportional valve 6 for simulating consumption and used for accurately controlling the consumption of hydrogen; the other outlet of the first three-way valve 23 is connected with a second three-way valve 24; one outlet of the second three-way valve 24 is connected with the hydrogen discharge valve 7 and is used for simulating hydrogen discharge action and testing the quick response capability and the pressure stability of the hydrogen supply circulating device 3; the other outlet of the second three-way valve 24 is connected with a second pressure regulating valve 8, and the second pressure regulating valve 8 is used for simulating the back pressure (mainly the pressure loss of the steam-water separator and the pipe loss of the connecting pipeline) from the outlet of the galvanic pile to the inlet of the hydrogen supply circulating device 3.
The outlet of the second pressure regulating valve 8 is connected with a third three-way valve 25, one outlet of the third three-way valve 25 is connected with an ejector testing channel which comprises a second switch valve 9, a second flowmeter 16, a third pressure gauge 17 and a third thermometer 18, and the outlet of the ejector testing channel is connected with an ejector hydrogen return device to be tested; the other outlet of the third three-way valve 25 is connected to a hydrogen-returning pump test channel, which comprises a third on-off valve 10, a fourth flowmeter 19, a fourth pressure gauge 20, a fourth thermometer 21, and a pressure sensor 22 with pressure feedback, for feeding back gas pressure data to the hydrogen-returning pump device to be tested, so that the hydrogen-returning pump hydrogen-returning device adjusts the proper output power, and the outlet of the hydrogen-returning pump test channel is connected to the hydrogen-returning pump hydrogen-returning device to be tested. When one test channel is used, the on-off valve of the other channel is closed.
To sum up, the operation method of the test system is as follows: taking an ejector testing channel as an example, the proportional valve 6 for simulating consumption is opened, the opening degree is controlled to be 50%, then the pressure reducing valve 1 is adjusted to the front end pressure required by the hydrogen supply circulating device to be tested, the first switch valve 2 is opened, the hydrogen supply circulating device 3 to be tested is operated, and the specified pressure is controlled to be output. Then, observing the flow value of the first flow meter 11, and controlling the flow of the first flow meter 11 to reach a specified flow by controlling the opening of the proportional valve 6; by observing the pressure difference between the second pressure gauge 14 and the third pressure gauge 17 and controlling the second pressure regulating valve 8 so that the pressure difference reaches a predetermined target value, the actual measurement value of the hydrogen return flow rate can be obtained by observing the flow rate value of the second flow meter 16, and the hydrogen return capacity can be obtained by comparing the actual measurement value with the main flow rate measured by the first flow meter 11. Finally, the hydrogen discharge valve 7 is controlled by a certain switching frequency, and the quick response capability of the hydrogen supply circulating device 3 to be tested can be judged by observing the pressure fluctuation of the second pressure gauge 14.
The utility model discloses an internal environment and the hydrogen consumption of the proportional valve simulation pile of gas holder, pressure regulating valve and simulation consumption, hydrogen pressure fluctuation when simulating fuel cell system operation through the hydrogen discharge valve can test the ejector respectively and return the performance of hydrogen device and hydrogen pump and return the hydrogen device through two way test passageways. And, the utility model discloses a to the mainstream volume of hydrogen pipeline, return the hydrogen flow, advance the measurement of piling key parameter such as pressure, and then match control parameter such as pressure drop, supply capacity to exit hydrogen, accomplish fast and supply hydrogen circulating device's the temperature, the pressure condition of returning the hydrogen mouth and export and establish, convenient to use simultaneously, the regulation precision is high, and it is fast to establish experimental conditions, and the test result is reliable.
The above description is only the specific embodiment of the preferred embodiment of the present invention, and this specific embodiment is based on the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A test system for the quick response capability of a fuel cell hydrogen supply circulating device is characterized by comprising a high-pressure hydrogen bottle, a pressure reducing valve, a first switch valve, a gas storage tank, a first pressure regulating valve, a first three-way valve, a proportional valve, a second three-way valve, a hydrogen exhaust valve and a second switch valve; the high-pressure hydrogen bottle and first switch valve are connected to the relief pressure valve, connect the hydrogen supply circulating device that awaits measuring between first switch valve and the gas holder, gas holder and first three-way valve are connected to first pressure regulating valve, the one end of first three-way valve is connected the proportional valve, the other end of first three-way valve is connected the second three-way valve, the one end of second three-way valve is connected the hydrogen discharge valve, the other end of second three-way valve with it awaits measuring to connect between the hydrogen supply circulating device and awaits measuring the hydrogen device.
2. The system for testing the quick response capability of the fuel cell hydrogen supply circulation device according to claim 1, wherein a second pressure regulating valve is arranged between the second three-way valve and the hydrogen return device to be tested.
3. The system for testing the quick response capability of the hydrogen supply circulation device of the fuel cell as claimed in claim 2, wherein one end of the second pressure regulating valve is connected with the second three-way valve, and the other end is connected with a third three-way valve; one end of the third three-way valve is connected with a second switch valve and a hydrogen returning device of the ejector to be tested, and the other end of the third three-way valve is connected with a third switch valve and a hydrogen returning device of a hydrogen returning pump to be tested.
4. The system for testing the quick response capability of the hydrogen supply circulation device of the fuel cell as claimed in claim 1, wherein a first flow meter, a first pressure meter and a first temperature meter are arranged between the first switch valve and the hydrogen supply circulation device to be tested.
5. The system for testing the quick response capability of the hydrogen supply circulation device of the fuel cell as claimed in claim 1, wherein a second pressure gauge and a second temperature gauge are arranged between the hydrogen supply circulation device to be tested and the gas storage tank.
6. The system for testing the quick response capability of the fuel cell hydrogen supply circulation device according to claim 3, wherein a second flowmeter, a third pressure gauge and a third thermometer are arranged between the second switch valve and the ejector hydrogen return device to be tested.
7. The system for testing the quick response capability of the fuel cell hydrogen supply circulation device according to claim 3, wherein a third flow meter, a fourth pressure meter and a fourth temperature meter are arranged between the third on-off valve and the hydrogen returning pump and hydrogen returning device to be tested.
8. The system for testing the quick response capability of the fuel cell hydrogen supply circulation device according to claim 7, wherein a pressure sensor is further arranged between the third switch valve and the hydrogen returning pump and hydrogen returning device to be tested.
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| CN202021618543.7U CN212342667U (en) | 2020-08-06 | 2020-08-06 | Test system for quick response capability of fuel cell hydrogen supply circulating device |
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| CN202021618543.7U CN212342667U (en) | 2020-08-06 | 2020-08-06 | Test system for quick response capability of fuel cell hydrogen supply circulating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113972383A (en) * | 2021-10-28 | 2022-01-25 | 三一汽车制造有限公司 | System simulation device, control parameter verification method and proportional valve control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113972383A (en) * | 2021-10-28 | 2022-01-25 | 三一汽车制造有限公司 | System simulation device, control parameter verification method and proportional valve control method |
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