CN214121527U - Drainage method detection device for gas tightness of hydrogen fuel cell - Google Patents
Drainage method detection device for gas tightness of hydrogen fuel cell Download PDFInfo
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- CN214121527U CN214121527U CN202022789422.5U CN202022789422U CN214121527U CN 214121527 U CN214121527 U CN 214121527U CN 202022789422 U CN202022789422 U CN 202022789422U CN 214121527 U CN214121527 U CN 214121527U
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- fuel cell
- switch valve
- test tube
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- mouth bottle
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- 239000000446 fuel Substances 0.000 title claims abstract description 63
- 239000007789 gas Substances 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 19
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000001257 hydrogen Substances 0.000 title claims abstract description 16
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000110 cooling liquid Substances 0.000 claims description 13
- 238000005259 measurement Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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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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- Fuel Cell (AREA)
Abstract
The utility model relates to a drainage method detection device for hydrogen fuel cell gas tightness, the device includes: the device comprises a fuel cell, a power supply, an air pump, a test tube, a fixed rack, a beaker, a wide-mouth bottle, a pressure sensor and a switch valve; the inlet end of the fuel cell pipeline is connected with the low-pressure gas supply assembly; the inlet of the fuel cell pipeline is connected with the air pump through an air passage switch valve, and the pressure sensor is arranged between the inlet of the fuel cell pipeline and the air passage switch valve; the fuel cell pipeline outlet is connected with the air leakage measuring assembly, the air leakage measuring assembly comprises a test tube with a suction nozzle and scales, a fixed rack, a wide-mouth bottle and an air pump, the test tube with the suction nozzle and the scales is fixed on the rack, the test tube is placed in a water beaker, one end of the wide-mouth bottle is connected with the suction nozzle of the test tube, and the other end of the wide-mouth bottle is connected with the air pump. The utility model discloses a drainage method can be more accurate, audio-visual aassessment fuel cell's gas tightness state.
Description
Technical Field
The utility model belongs to the technical field of fuel cell, especially a drainage method detection device for hydrogen fuel cell gas tightness.
Background
With the development and application of fuel cell technology, safe operation of fuel cells is also becoming more and more important. Good air tightness is one of the important guarantees for the safe operation of the fuel cell. When the fuel cell with poor air tightness is operated, the utilization rate of fuel is reduced, so that the performance of the cell is influenced, and more seriously, the potential safety hazard of the cell is serious. Therefore, the airtightness test is required both before the fuel cell assembly is completed and after the fuel cell assembly is operated for a certain period of time. Patent CN205879471U discloses a fuel cell airtightness detection system, which uses an electronic flow meter to measure the leakage rate. The method has larger measurement error and higher requirement on the measurement accuracy of the electronic flowmeter. In the prior art, high-pressure gas is used as a detection gas source for gas tightness detection, so that potential safety hazards exist, and certain requirements are met for standard operation. Therefore, a fuel cell airtightness detection system which is convenient to operate, safe, accurate in detection and low in cost is required.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a drainage method detection device for hydrogen fuel cell gas tightness.
The utility model provides a technical scheme of above-mentioned problem does: a water draining method for detecting the airtightness of hydrogen fuel cell includes
Comprises a fuel cell, a power supply, an air pump, a test tube, a fixed rack, a beaker, a wide-mouth bottle, a pressure sensor and a switch valve;
both ends of the fuel cell are provided with a cathode cavity switch valve, a cooling liquid cavity switch valve and an anode cavity switch valve;
the fuel cell pipeline inlet is connected with a low-pressure gas supply assembly, and the low-pressure gas supply assembly comprises a gas pump, a gas passage switch valve and a pressure sensor; the inlet of the fuel cell pipeline is connected with the air pump through an air passage switch valve, and the pressure sensor is arranged between the inlet of the fuel cell pipeline and the air passage switch valve;
the fuel cell pipeline outlet is connected with the air leakage measuring assembly, the air leakage measuring assembly comprises a test tube with a suction nozzle and scales, a fixed rack, a wide-mouth bottle and an air pump, the test tube with the suction nozzle and the scales is fixed on the rack, the test tube is placed in a water-containing beaker, one end of the wide-mouth bottle is connected with the suction nozzle of the test tube, and the other end of the wide-mouth bottle is connected with the air pump; and a pipeline outlet of the cathode cavity switch valve is communicated into a test tube port with a drawing nozzle and scales through a guide tube.
According to the scheme, the flow range of the air pump is 1L/min to 20L/min, and the maximum working pressure range is 2.5bar to 4 bar.
According to the scheme, the measuring range of the test tube with the drawing nozzle and scales is 100ml to 1000ml, and the drawing nozzle is arranged at the bottom.
According to the above scheme, wide-necked bottle one end and the suction nozzle exit linkage of the test tube of taking suction nozzle and scale, the other end and aspiration pump access connection, the wide-necked bottle top is provided with the rubber buffer, and the rubber buffer is plugged tightly with the wide-necked bottle.
According to the scheme, the air pump is a micro air pump, and the flow range of the micro air pump is 50ml/min to 2000 ml/min.
According to the scheme, the air pump is a micro diaphragm air pump, and the flow rate is 250 ml/min.
According to the scheme, the drainage method detection device further comprises a power supply for controlling the switches of the air pump and the air suction pump.
According to the scheme, the cathode cavity switch valve, the cooling liquid cavity switch valve and the anode cavity switch valve are all ball valves capable of being manually switched.
According to the scheme, the pressure sensor is a high-precision digital electronic barometer.
The working principle of the device is as follows: connecting the drainage detection device of the fuel cell, closing a cooling liquid cavity switch valve at the inlet end of a fuel cell pipeline and an anode cavity switch valve at the outlet end of the fuel cell pipeline, a cooling liquid cavity switch valve and a cathode cavity switch valve, opening an air passage switch valve in a low-pressure air supply assembly, a cathode cavity switch valve and an anode cavity switch valve at the inlet end of the fuel cell pipeline, starting an air pump to work through power control, recording the pressure value increase of a pressure gauge, stopping the air pump when the pressure value of the pressure gauge is increased to 3bar, closing the air passage switch valve, and recording the pressure value P of the pressure gauge1Starting to time, recording the pressure value P again when the time t is more than or equal to 10min2And judging whether the fuel cell has external leakage or not through the pressure drop.
The utility model discloses the beneficial effect that the device brought is:
1) the scheme of adopting the direct air pump as the detection air source has simple operation and can avoid the potential safety hazard generated by high-pressure air.
2) The adoption of the water discharge volume method can accurately detect the amount of leaked gas, and more accurately and intuitively evaluate the air tightness state of the fuel cell.
3) Test tube filter tip department adopts the scheme of bleeding, the volume of the interior top air of control and measurement test tube that can be convenient. The method for draining water by volume is simpler to operate and can be repeatedly used.
4) The fuel cell air tightness drainage method detection system has the characteristics of convenience in operation, low cost and the like.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention;
in the figure: 1-a power supply; 2, an air pump; 3, an air passage switch valve; 4 a pressure sensor; 5-inlet end cathode cavity switch valve; 6-inlet end cooling liquid cavity switch valve; 7-inlet end anode cavity switch valve; 8-outlet end anode cavity switch valve; 9-outlet end cooling liquid cavity switch valve; 10-outlet end cathode cavity switch valve; 11-water containing beaker; 12-stopwatch; 13-a stationary gantry; 14-jar; 15-micro air pump; 16-test tube with drawing nozzle and scale.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1, a drainage detection device for hydrogen fuel cell airtightness comprises a fuel cell, a power supply 1, an air pump 2, a test tube 16, a fixed rack 13, a beaker 11, a wide-mouth bottle 14, a pressure sensor 4 and an air passage switch valve 3;
both ends of the inlet and the outlet of the fuel cell are provided with a cathode cavity switch valve, a cooling liquid cavity switch valve and an anode cavity switch valve; the inlet end cathode cavity switch valve 5, the cooling liquid cavity switch valve 6, the anode cavity switch valve 7, the outlet end cathode cavity switch valve 10, the cooling liquid cavity switch valve 9 and the anode cavity switch valve 8 are all ball valves capable of being manually switched.
The fuel cell pipeline inlet is connected with a low-pressure air supply assembly, and the low-pressure air supply assembly comprises an air pump 2, an air passage switch valve 3 and a pressure sensor 4; the inlet of the fuel cell pipeline is connected with the air pump 2 through the air passage switch valve 3, and the pressure sensor 4 is arranged between the inlet of the fuel cell pipeline and the air passage switch valve;
the fuel cell pipeline outlet is connected with an air leakage measuring assembly, the air leakage measuring assembly comprises a test tube 16 with a suction nozzle and scales, a fixed rack 13, a wide-mouth bottle 14 and an air pump 15, the test tube with the suction nozzle and the scales is fixed on the rack, the test tube is placed in a water-containing beaker, one end of the wide-mouth bottle is connected with the suction nozzle of the test tube, and the other end of the wide-mouth bottle is connected with the air pump; the outlet of the cathode cavity switch valve is communicated into the test tube opening with a suction nozzle and scales through a conduit.
The drainage method detection device also comprises a power supply for controlling the switches of the air pump and the air suction pump.
In the embodiment, the flow range of the air pump is 1L/min to 20L/min, and the maximum working pressure range is 2.5bar to 4 bar. The measuring range of the test tube with the drawing nozzle and the scales is 100ml to 1000ml, and the drawing nozzle is arranged at the bottom.
One end of the wide-mouth bottle is connected with a pumping nozzle outlet of the test tube with the pumping nozzle and scales, the other end of the wide-mouth bottle is connected with an air pump inlet, a rubber plug is arranged at the top of the wide-mouth bottle, and the rubber plug is tightly plugged with the wide-mouth bottle.
The air pump is a micro air pump, and the flow range of the micro air pump is 50ml/min to 2000 ml/min. The pressure sensor is a high-precision digital electronic barometer, and the measuring range is 0-6 bar.
Connecting the drainage detection device of the fuel cell, closing a cooling liquid cavity switch valve at the inlet end of a fuel cell pipeline and an anode cavity switch valve at the outlet end of the fuel cell pipeline, a cooling liquid cavity switch valve and a cathode cavity switch valve, opening an air passage switch valve in a low-pressure air supply assembly, a cathode cavity switch valve and an anode cavity switch valve at the inlet end of the fuel cell pipeline, starting an air pump to work through power control, recording the pressure value increase of a pressure gauge, stopping the air pump when the pressure value of the pressure gauge is increased to 3bar, closing the air passage switch valve, and recording the pressure value P of the pressure gauge1Starting to time, recording the pressure value P again when the time t is more than or equal to 10min2And judging whether the fuel cell has external leakage or not through the pressure drop.
Claims (9)
1. A water discharge method detection device for detecting airtightness of a hydrogen fuel cell, comprising:
the device comprises a fuel cell, a power supply, an air pump, a test tube, a fixed rack, a beaker, a wide-mouth bottle, a pressure sensor and a switch valve;
both ends of the fuel cell are provided with a cathode cavity switch valve, a cooling liquid cavity switch valve and an anode cavity switch valve;
the inlet end of the fuel cell pipeline is connected with a low-pressure gas supply assembly, and the low-pressure gas supply assembly comprises a gas pump, an air passage switch valve and a pressure sensor; the inlet end of the fuel cell pipeline is connected with the air pump through an air passage switch valve, and the pressure sensor is arranged between the inlet of the fuel cell pipeline and the air passage switch valve;
the outlet end of the fuel cell pipeline is connected with a gas leakage measuring assembly, the gas leakage measuring assembly comprises a test tube with a suction nozzle and scales, a fixed rack, a wide-mouth bottle and a gas pump, the test tube with the suction nozzle and the scales is fixed on the rack, the test tube is placed in a water-containing beaker, one end of the wide-mouth bottle is connected with the suction nozzle of the test tube, and the other end of the wide-mouth bottle is connected with the gas pump; and a pipeline outlet of the cathode cavity switch valve at the outlet end of the fuel cell pipeline is communicated into a test tube port with a drawing nozzle and scales through a guide pipe.
2. The water drainage method detection device for the airtightness of the hydrogen fuel cell according to claim 1, wherein the flow rate of the air pump ranges from 1L/min to 20L/min, and the maximum operating pressure ranges from 2.5bar to 4 bar.
3. The apparatus for detecting the airtightness of a hydrogen fuel cell according to claim 1, wherein the range of the test tube with the suction nozzle and the scale is 100ml to 1000ml, and the suction nozzle is provided at the bottom of the test tube.
4. The device for detecting the airtightness of the hydrogen fuel cell according to claim 1, wherein one end of the wide-mouth bottle is connected to a suction nozzle outlet of a test tube with a suction nozzle and scales, the other end of the wide-mouth bottle is connected to an inlet of a suction pump, a rubber plug is arranged at the top of the wide-mouth bottle, and the rubber plug is tightly plugged with the wide-mouth bottle.
5. The water drainage method detection device for airtightness of a hydrogen fuel cell according to claim 1, wherein the suction pump is a micro suction pump, and a flow rate of the micro suction pump ranges from 50ml/min to 2000 ml/min.
6. The apparatus for detecting the airtightness of the hydrogen fuel cell according to claim 1, wherein the suction pump is a micro diaphragm suction pump, and the flow rate is 250 ml/min.
7. The water discharge method detection apparatus for gas tightness of a hydrogen fuel cell according to claim 1, characterized in that it further comprises a power supply controlling the switching of the air pump and the air suction pump.
8. The water discharge method detection device for hydrogen fuel cell airtightness according to claim 1, wherein the cathode chamber on-off valve, the cooling liquid chamber on-off valve and the anode chamber on-off valve are all manually switchable ball valves.
9. The water discharge method detection device for hydrogen fuel cell airtightness according to claim 1, wherein the pressure sensor is a high-precision digital electronic gas pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022789422.5U CN214121527U (en) | 2020-11-26 | 2020-11-26 | Drainage method detection device for gas tightness of hydrogen fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022789422.5U CN214121527U (en) | 2020-11-26 | 2020-11-26 | Drainage method detection device for gas tightness of hydrogen fuel cell |
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| CN214121527U true CN214121527U (en) | 2021-09-03 |
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| CN202022789422.5U Active CN214121527U (en) | 2020-11-26 | 2020-11-26 | Drainage method detection device for gas tightness of hydrogen fuel cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115046705A (en) * | 2022-06-23 | 2022-09-13 | 南京东焱氢能源科技有限公司 | Hydrogen fuel single cell air leakage testing equipment |
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2020
- 2020-11-26 CN CN202022789422.5U patent/CN214121527U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115046705A (en) * | 2022-06-23 | 2022-09-13 | 南京东焱氢能源科技有限公司 | Hydrogen fuel single cell air leakage testing equipment |
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