CN220021178U - Testing device for parts on air path and hydrogen path - Google Patents
Testing device for parts on air path and hydrogen path Download PDFInfo
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- CN220021178U CN220021178U CN202321586332.3U CN202321586332U CN220021178U CN 220021178 U CN220021178 U CN 220021178U CN 202321586332 U CN202321586332 U CN 202321586332U CN 220021178 U CN220021178 U CN 220021178U
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 209
- 239000001257 hydrogen Substances 0.000 title claims abstract description 205
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 205
- 238000012360 testing method Methods 0.000 title claims abstract description 180
- 239000007789 gas Substances 0.000 claims abstract description 66
- 238000010926 purge Methods 0.000 claims abstract description 28
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 238000012806 monitoring device Methods 0.000 claims description 28
- 239000000446 fuel Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Classifications
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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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Abstract
The utility model discloses a testing device for parts on an air path and a hydrogen path, which has the advantages of simple structure, complete functions and low use cost, and comprises a plurality of electric pile modules, wherein each electric pile module is communicated with a hydrogen input pipe, an air conveying pipe, a hydrogen tail gas converging pipe and an air tail gas outer exhaust pipe, and the hydrogen tail gas converging pipe is connected with the hydrogen tail gas outer exhaust pipe with a proportional flow regulating valve testing site and a hydrogen purging pipe with a purging valve testing site; the ejector test pipeline with the ejector test site and the proportional valve test pipeline with the proportional valve test site are arranged at the input end of the hydrogen input pipe, the ejector test site is connected with the hydrogen return pipe, the hydrogen return pipe is connected to the hydrogen tail gas external discharge pipe, and the hydrogen return pipe is provided with a hydrogen circulating pump test site; the hydrogen input pipe is connected with the hydrogen return pipe through a hydrogen connecting pipe; an air compressor test site is arranged on the air conveying pipe; a throttle valve test site is arranged on the air outlet pipe.
Description
Technical Field
The utility model relates to the technical field of component testing equipment in a hydrogen fuel cell system, in particular to a testing device for components on an air path and a hydrogen path.
Background
The hydrogen loop and the air loop respectively provide stable and precisely metered hydrogen and air for the fuel cell, which is the guarantee of the high-efficiency operation of the hydrogen fuel cell. The hydrogen circuit is usually provided with a hydrogen injection valve, a hydrogen circulating pump, various valves such as a proportional valve, a proportional flow regulating valve and a purge valve, and the air circuit is usually provided with parts such as an air compressor and a throttle valve. The components of the hydrogen circuit and the air circuit need to be tested in a related manner, and the test meets the requirement to be assembled into the hydrogen fuel cell system for use.
At present, the parts are tested independently, and a test system is required to be prepared for testing each part. Each test system can only test one component, which makes testing of components in a hydrogen fuel cell system both cumbersome and costly.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the test device for the parts on the air path and the hydrogen path has the advantages that the test device can test various parts, the compatibility is good, and the test cost can be effectively reduced.
In order to solve the problems, the utility model adopts the following technical scheme: a test device for parts on an air path and a hydrogen path, comprising: the hydrogen gas inlet on each pile module is connected with a hydrogen branch pipe with a switch valve, and each hydrogen branch pipe is communicated with a hydrogen input pipe; an air inlet on each pile module is connected with an air branch pipe with a switch valve, and each air branch pipe is communicated with an air conveying pipe; the hydrogen tail gas outlet on each pile module is provided with a hydrogen tail gas branch pipe, each hydrogen tail gas branch pipe is communicated with a hydrogen tail gas converging pipe, the hydrogen tail gas converging pipe is connected with a hydrogen tail gas outer exhaust pipe and a hydrogen purging pipe, a proportional flow regulating valve test site is arranged on the hydrogen tail gas outer exhaust pipe, a second pressure monitoring device is arranged on the hydrogen tail gas outer exhaust pipe at one side of the input end of the proportional flow regulating valve test site, and a purging valve test site is arranged on the hydrogen purging pipe;
the ejector test pipeline and the proportional valve test pipeline are connected in parallel at the input end of the hydrogen input pipe, the hydrogen source conveying pipe is connected with the input ends of the ejector test pipeline and the proportional valve test pipeline, and the ejector test pipeline is provided with a first switch valve and an ejector test site; the proportional valve test pipeline is provided with a second switch valve and a proportional valve test site, the ejector test site is connected with the output end of the hydrogen return pipe, the input end of the hydrogen return pipe is connected to the hydrogen tail gas exhaust pipe, and the hydrogen return pipe is provided with a hydrogen circulating pump test site; the hydrogen input pipe is provided with a hydrogen connecting pipe with a switch valve, the hydrogen connecting pipe is connected to a hydrogen return pipe close to the testing site of the ejector, and the hydrogen return pipe is also provided with a hydrogen flow monitoring device; the hydrogen input pipe is provided with a first pressure monitoring device;
an air flow monitoring device is arranged on the air conveying pipe, the input end of the air conveying pipe is connected with an air source, and an air compressor test site is arranged on the air conveying pipe; the air exhaust pipe is provided with a throttle valve test site, and the air exhaust pipe is also provided with a third pressure monitoring device.
Further, the device for testing the parts on the air path and the hydrogen path is characterized in that the hydrogen flow monitoring device is a hydrogen flow meter.
Further, the device for testing parts on an air path and a hydrogen path is characterized in that the air flow monitoring device is an air flow meter.
Further, the device for testing parts on an air path and a hydrogen path is described above, wherein each switch valve is an electromagnetic switch valve.
Further, the device for testing parts on an air path and a hydrogen path is provided, wherein the first pressure monitoring device, the second pressure monitoring device and the third pressure monitoring device are respectively a first pressure sensor, a second pressure sensor and a third pressure sensor.
Further, in the testing device for parts on the air path and the hydrogen path, the number of the pile modules is greater than or equal to two.
The utility model has the advantages that: the test device has the advantages that the structure is simple, the test of the parts on the air path and the hydrogen path is integrated in one test device, the test is greatly facilitated, and meanwhile, the test cost is effectively saved.
Drawings
FIG. 1 is a schematic diagram of the principle and structure of a testing device for parts on an air path and a hydrogen path.
Fig. 2 is a graph showing the pressure change in the hydrogen input tube during the power pull-up test of example 1.
FIG. 3 is a schematic representation of the flow variation in the air duct of the power pull-up test of example 2.
Fig. 4 is a graph showing the change in pressure in the air exhaust pipe during the power pull-up test of example 3.
FIG. 5 is a schematic diagram showing the flow rate change in the hydrogen return pipe during the power pull-up test of example 4.
FIG. 6 is a schematic diagram of the flow change in the hydrogen return pipe during the power pull-up test of example 5.
Description of the embodiments
The utility model will be described in further detail with reference to the drawings and the preferred embodiments.
As shown in fig. 1, a test device for parts on an air path and a hydrogen path comprises: the number of the pile modules is more than or equal to two, and the number of the pile modules can be set according to actual needs. In this embodiment, five pile modules are provided, which are a first pile module 1, a second pile module 2, a third pile module 3, a fourth pile module 4, and a fifth pile module 5, respectively.
Each pile module is provided with a hydrogen inlet, an air inlet, a hydrogen tail gas outlet and an air tail gas outlet. Specifically, the first pile module 1 is provided with a first hydrogen inlet 11, a first air inlet 12, a first hydrogen tail gas outlet 13 and a first air tail gas outlet 14. The second pile module 2 is provided with a second hydrogen inlet 21, a second air inlet 22, a second hydrogen tail gas outlet 23 and a second air tail gas outlet 24. The third pile module 3 is provided with a third hydrogen inlet 31, a third air inlet 32, a third hydrogen tail gas outlet 33 and a third air tail gas outlet 34. The fourth pile module 4 is provided with a fourth hydrogen inlet 41, a fourth air inlet 42, a fourth hydrogen exhaust outlet 43 and a fourth air exhaust outlet 44. The fifth galvanic pile module 5 is provided with a fifth hydrogen inlet 51, a fifth air inlet 52, a fifth hydrogen off-gas outlet 53 and a fifth air off-gas outlet 54.
A first hydrogen inlet 11 on the first galvanic pile module 1 is connected with a first hydrogen branch pipe 16 with a fourth switch valve 15; a second hydrogen inlet 21 on the second galvanic pile module 2 is connected with a second hydrogen branch pipe 26 with a sixth switch valve 25; a third hydrogen inlet 31 on the third galvanic pile module 3 is connected with a third hydrogen branch pipe 36 with an eighth switch valve 35; a fourth hydrogen inlet 41 on the fourth galvanic pile module 4 is connected with a fourth hydrogen branch pipe 46 with a tenth switch valve 45; a fifth hydrogen inlet 51 of the fifth pile module 5 is connected to a fifth hydrogen branch pipe 56 with a twelfth switching valve 55. The first hydrogen branch pipe 16, the second hydrogen branch pipe 26, the third hydrogen branch pipe 36, the fourth hydrogen branch pipe 46, and the fifth hydrogen branch pipe 56 are all in communication with the hydrogen input pipe 6.
The first air inlet 12 on the first galvanic pile module 1 is connected with a first air branch pipe 18 with a fifth switch valve 17; the second air inlet 22 on the second galvanic pile module 2 is connected with a second air branch pipe 28 with a seventh switch valve 27; a third air inlet 32 on the third galvanic pile module 3 is connected to a third air branch 38 with a ninth switching valve 37; a fourth air inlet 42 on the fourth galvanic pile module 4 is connected to a fourth air branch 48 with an eleventh switch valve 47; a fifth air inlet 52 on the fifth stack module 5 is connected to a fifth air branch 58 with a thirteenth switching valve 57. The first air branch pipe 18, the second air branch pipe 28, the third air branch pipe 38, the fourth air branch pipe 48 and the fifth air branch pipe 58 are all communicated with the air conveying pipe 7.
A first hydrogen tail gas branch pipe 131 is arranged on the first hydrogen tail gas outlet 13 of the first galvanic pile module 1; the second hydrogen tail gas outlet 23 of the second galvanic pile module 2 is provided with a second hydrogen tail gas branch pipe 231, the third hydrogen tail gas outlet 33 of the third galvanic pile module 3 is provided with a third hydrogen tail gas branch pipe 331, the fourth hydrogen tail gas outlet 43 of the fourth galvanic pile module 4 is provided with a fourth hydrogen tail gas branch pipe 431, and the fifth hydrogen tail gas outlet 53 of the fifth galvanic pile module 5 is provided with a fifth hydrogen tail gas branch pipe 531. The first hydrogen tail gas branch pipe 131, the second hydrogen tail gas branch pipe 231, the third hydrogen tail gas branch pipe 331, the fourth hydrogen tail gas branch pipe 431 and the fifth hydrogen tail gas branch pipe 531 are all communicated with the hydrogen tail gas converging pipe 8.
The hydrogen tail gas converging pipe 8 on be connected with hydrogen tail gas outer calandria 81 and hydrogen purge pipe 82, be provided with proportion flow control valve test site 811 on the hydrogen tail gas outer calandria 81, be provided with second pressure monitoring device on the hydrogen tail gas outer calandria 81 of the input side of proportion flow control valve test site 811, second pressure monitoring device be second pressure sensor 812. A purge valve test site 821 is provided on the hydrogen purge tube 82.
A first air exhaust branch pipe 141 is arranged on the first air exhaust outlet 14 of the first galvanic pile module 1; the second air exhaust outlet 24 of the second galvanic pile module 2 is provided with a second air exhaust outlet branch pipe 241, the third air exhaust outlet 34 of the third galvanic pile module 3 is provided with a third air exhaust branch pipe 341, the fourth air exhaust outlet 44 of the fourth galvanic pile module 4 is provided with a fourth air exhaust branch pipe 441, and the fifth air exhaust outlet 54 of the fifth galvanic pile module 5 is provided with a fifth air exhaust branch pipe 541. The first air tail gas branch pipe 141, the second air tail gas branch pipe 241, the third air tail gas branch pipe 341, the fourth air tail gas branch pipe 441 and the fifth air tail gas branch pipe 541 are all communicated with the air tail gas converging pipe 110, and the air tail gas converging pipe 110 is connected with an air tail gas outer exhaust pipe 109. The air exhaust outer pipe 109 is provided with a throttle valve test site 111, and the air exhaust outer pipe 109 at the input end of the throttle valve test site 111 is provided with a third pressure monitoring device, which is a third pressure sensor 112 in this embodiment.
The ejector test pipeline 9 and the proportional valve test pipeline 10 are arranged at the input end of the hydrogen input pipe 6 in parallel, and the hydrogen source conveying pipe 60 is connected with the input ends of the ejector test pipeline 9 and the proportional valve test pipeline 10. The ejector test pipeline 9 is provided with a first switch valve 91 and an ejector test site 92; the proportional valve test pipeline 10 is provided with a second switch valve 101 and a proportional valve test site 102. The ejector test site 92 is connected with the output end of the hydrogen return pipe 103, and the input end of the hydrogen return pipe 103 is connected to the hydrogen tail gas exhaust pipe 81. The hydrogen return pipe 103 is provided with a hydrogen circulating pump test site 104.
The hydrogen input pipe 6 is further provided with a hydrogen connecting pipe 105 with a third switch valve 106, the hydrogen connecting pipe 105 is connected to a hydrogen return pipe 103 close to the injector test site 92, the hydrogen return pipe 103 is further provided with a hydrogen flow monitoring device, and the hydrogen flow monitoring device in this embodiment is a hydrogen flowmeter 107. The output end of the hydrogen gas input pipe 6 is provided with a first pressure monitoring device, which is a first pressure sensor 61.
The air conveying pipe 7 is provided with an air flow monitoring device, in this embodiment, the air flow monitoring device is an air flow meter 71, the input end of the air conveying pipe 7 is connected with an air source, and the air conveying pipe 7 is provided with an air compressor test site 72.
The first, second, third, fourth, fifth, and thirteenth switching valves 91, 101, 106, 15, 17, 25, 27, 35, 37, 45, 47, 55, and 57 described above
Electromagnetic switch valves are adopted.
The utility model is further illustrated by the following specific test examples.
Example 1: and testing a proportional valve on the hydrogen path.
Preparation: the proportional valve sample to be tested is installed at the proportional valve test site 102. The first pile module 1 and the second pile module 2 are opened by simulating pile back pressure, namely the fourth switch valve 15, the fifth switch valve 17, the sixth switch valve 25 and the seventh switch valve 27 are opened, and the switch valves of the rest pile modules are closed.
For matching tests, a qualified air compressor was installed at air compressor test site 72, a qualified throttle was installed at throttle valve test site 111, a qualified hydrogen circulation pump was installed at hydrogen circulation pump test site 104, a qualified purge valve was installed at purge valve test site 821, and a qualified proportional flow regulator valve was installed at proportional flow regulator valve test site 811. The first switch valve 91 is closed, and the position of the injector test site 92 is sealed by a sealing head, so that no air leakage is ensured. The third on-off valve 106 is opened. When testing the sample at one of the test sites, the corresponding parts installed at the other test sites are qualified and match the power of the sample to be tested.
The test procedure was as follows: 1. and (3) starting purging: 30% of a throttle valve is opened, and the air compressor is purged at 10% of the rotating speed; the proportional valve is opened by 10 percent of opening, and the proportional flow regulating valve is opened by 10 percent of opening.
2. Power pull-up test: when the system power is tested from 30% load to 100% full operation, it is checked whether the proportional valve opening adjustment can provide sufficient hydrogen for the system. The running load power point of the test system is 30% -100%.
30% load operation: the air compressor is operated at 30% load to provide air to the system and the throttle opening ensures that the third pressure sensor 112 reaches a set pressure value. The second switch valve 101 is opened, hydrogen enters the first pile module 1 and the second pile module 2 through a to-be-tested proportional valve sample, the proportional flow regulating valve simulates pile consumption under the condition of 30% load to discharge the hydrogen, the purge valve is opened periodically, and the flow is disturbed. The hydrogen circulation pump returns hydrogen according to the hydrogen return flow under the condition of 30% load. The proportional flow rate regulating valve adjusts the opening degree according to the pressure detected by the first pressure sensor 61 so that the pressure in the hydrogen gas input pipe 6 reaches a set value.
3. And (5) testing and evaluating. The pressure in the hydrogen input pipe 6 is stabilized at a set value by adjusting the flow of the proportional valve sample to be tested, and the proportional valve sample to be tested is regarded as qualified.
The adjustment of the pressure in the hydrogen inlet pipe 6 during the test is shown in fig. 2. The straight solid line in the figure is the set value of the pressure, and the wavy line is the fluctuation generated in the process of adjusting the sample of the proportional valve to be measured. The fluctuation range is less than 10% and is thus considered acceptable.
Example 2: and testing an air compressor on the air circuit.
Preparation: the air compressor sample to be tested is installed at the air compressor test site 72. The first pile module 1 and the second pile module 2 are opened by simulating pile back pressure, namely the fourth switch valve 15, the fifth switch valve 17, the sixth switch valve 25 and the seventh switch valve 27 are opened, and the switch valves of the rest pile modules are closed.
To match the test, a proportional valve was installed at proportional valve test site 102, a qualified throttle was installed at throttle valve test site 111, a qualified hydrogen circulation pump was installed at hydrogen circulation pump test site 104, a qualified purge valve was installed at purge valve test site 821, and a qualified proportional flow regulator valve was installed at proportional flow regulator valve test site 811. The first switch valve 91 is closed, and the position of the injector test site 92 is sealed by a sealing head, so that no air leakage is ensured. The third on-off valve 106 is opened. When testing the sample at one of the test sites, the corresponding parts installed at the other test sites are qualified and match the power of the sample to be tested.
The test procedure was as follows: 1. and (3) starting purging: 30% of a throttle valve is opened, and the air compressor is purged at 10% of the rotating speed; the proportional valve is opened by 10 percent of opening, and the proportional flow regulating valve is opened by 10 percent of opening.
2. Power pull-up test: when the power of the test system runs from 30% to 100% full, the air flow in the air conveying pipe 7 reaches the set flow by real-time adjustment of the sample of the air compressor to be tested according to the flow value measured by the air flowmeter, and the rotating speed is adjusted to enable the actual flow to meet the required flow. The throttle valve automatically adjusts the opening degree so that the third pressure sensor 112 reaches the set pressure. During the power pull-up process, the flow rate in the air delivery pipe 7 is changed as shown in fig. 3, and the set flow rate in fig. 3 is basically consistent with the actual flow rate.
3. Testing and evaluation: the set flow of the air compressor is matched with the actual flow, and the sample of the air compressor to be detected is regarded as qualified.
Example 3: test of throttle in air circuit.
Preparation: the throttle sample to be tested is mounted at throttle test site 111. The first pile module 1 and the second pile module 2 are opened by simulating pile back pressure, namely the fourth switch valve 15, the fifth switch valve 17, the sixth switch valve 25 and the seventh switch valve 27 are opened, and the switch valves of the rest pile modules are closed.
To match the test, a proportional valve was installed at the proportional valve test site 102, a qualified air compressor was installed at the air compressor test site 72, a qualified hydrogen circulation pump was installed at the hydrogen circulation pump test site 104, a qualified purge valve was installed at the purge valve test site 821, and a qualified proportional flow regulator valve was installed at the proportional flow regulator valve test site 811. The first switch valve 91 is closed, and the position of the injector test site 92 is sealed by a sealing head, so that no air leakage is ensured. The third on-off valve 106 is opened. When testing the sample at one of the test sites, the corresponding parts installed at the other test sites are qualified and match the power of the sample to be tested.
The test procedure was as follows: 1. and (3) starting purging: 30% of a throttle valve is opened, and the air compressor is purged at 10% of the rotating speed; the proportional valve is opened by 10 percent of opening, and the proportional flow regulating valve is opened by 10 percent of opening.
2. Power pull-up test: when the test system is operated from 30% load to 100% full load, the throttle responds to the set flow of the demand, and the set back pressure is regulated, so that the actual back pressure meets the back pressure of the design demand.
3. Testing and evaluation: the throttle valve adjusting parameter, the third pressure sensor 112 detects the pressure in the air exhaust pipe 109 in real time, and the deviation between the real-time pressure and the set pressure value exceeds 5kpa at 40% and 60% power points, so that the throttle valve sample to be detected is judged to be unsatisfactory. The change in the real-time pressure value of the pressure in the air-in-out-tube 109 during the power pull-up test is shown in fig. 4.
Example 4: testing of a hydrogen circulation pump in a hydrogen loop.
Preparation: the hydrogen circulation pump sample to be tested is mounted to the hydrogen circulation pump test site 104. The first pile module 1 and the second pile module 2 are opened by simulating pile back pressure, namely the fourth switch valve 15, the fifth switch valve 17, the sixth switch valve 25 and the seventh switch valve 27 are opened, and the switch valves of the rest pile modules are closed.
To match the test, a proportional valve is installed at proportional valve test site 102, a qualified air compressor is installed at air compressor test site 72, a qualified purge valve is installed at purge valve test site 821, and a qualified proportional flow regulator valve is installed at proportional flow regulator valve test site 811. The first switch valve 91 is closed, and the position of the injector test site 92 is sealed by a sealing head, so that no air leakage is ensured. The third on-off valve 106 is opened. When testing the sample at one of the test sites, the corresponding parts installed at the other test sites are qualified and match the power of the sample to be tested.
The testing process comprises the following steps: and (3) a step of: a purge is initiated. 30% of a throttle valve is opened, and the air compressor is purged at 10% of the rotating speed; the proportional valve is opened by 10 percent of opening, and the proportional flow regulating valve is opened by 10 percent of opening.
2. Power pull-up test: when the system is tested to run from 30% load to 100% full load, whether the hydrogen circulation pump can provide reflux hydrogen with set flow rate or not is checked. The hydrogen flow meter 107 monitors the flow value of the hydrogen return pipe 103 in real time. The flow value change in the hydrogen return pipe 103 during the power pull-up process is shown in fig. 5.
Thirdly,: and (5) testing and evaluating. The hydrogen circulating pump adjusts the flow, the flow difference between the set flow and the actual flow is less than 5%, and the sample of the hydrogen circulating pump to be detected is regarded as qualified.
Example 5: and (3) testing an ejector in the hydrogen loop.
Preparation: the ejector sample to be tested is mounted to the ejector test site 92. The first pile module 1 and the second pile module 2 are opened by simulating pile back pressure, namely the fourth switch valve 15, the fifth switch valve 17, the sixth switch valve 25 and the seventh switch valve 27 are opened, and the switch valves of the rest pile modules are closed.
To match the test, a proportional valve is installed at proportional valve test site 102, a qualified air compressor is installed at air compressor test site 72, a qualified purge valve is installed at purge valve test site 821, and a qualified proportional flow regulator valve is installed at proportional flow regulator valve test site 811. The first on-off valve 91 is opened. The hydrogen circulating pump is communicated, and the hydrogen circulating pump is not installed, so that no air leakage is ensured. The third on-off valve 106 is opened. When testing the sample at one of the test sites, the corresponding parts installed at the other test sites are qualified and match the power of the sample to be tested.
The testing process comprises the following steps: 1. and (3) starting purging: 30% of a throttle valve is opened, and the air compressor is purged at 10% of the rotating speed; the proportional valve is opened by 10 percent of opening, and the proportional flow regulating valve is opened by 10 percent of opening.
2. Power pull-up test: when the power of the test system runs from 30% to 100% full, the hydrogen flowmeter 107 is used for judging whether the ejector sample to be tested can provide reflux hydrogen with set flow for the system, so as to judge whether the ejection flow meets the requirement. The flow value change in the hydrogen return pipe 103 during the power pull-up test is shown in fig. 6.
3. Testing and evaluation: the difference between the actual flow in the hydrogen return pipe 103 and the set flow value is more than 5%, so that the injector sample to be tested is unqualified.
The utility model has the advantages that: the test device has the advantages that the structure is simple, the test of the parts on the air path and the hydrogen path is integrated in one test device, the test is greatly facilitated, and meanwhile, the test cost is effectively saved.
Claims (6)
1. A test device for parts on an air path and a hydrogen path, comprising: the hydrogen gas inlet, the air inlet, the hydrogen gas tail gas outlet and the air tail gas outlet are all arranged on each pile module, and the hydrogen gas inlet, the air tail gas outlet and the air tail gas outlet are characterized in that: the hydrogen inlet on each pile module is connected with a hydrogen branch pipe with a switch valve, and each hydrogen branch pipe is communicated with a hydrogen input pipe; an air inlet on each pile module is connected with an air branch pipe with a switch valve, and each air branch pipe is communicated with an air conveying pipe; the hydrogen tail gas outlet on each pile module is provided with a hydrogen tail gas branch pipe, each hydrogen tail gas branch pipe is communicated with a hydrogen tail gas converging pipe, the hydrogen tail gas converging pipe is connected with a hydrogen tail gas outer exhaust pipe and a hydrogen purging pipe, a proportional flow regulating valve test site is arranged on the hydrogen tail gas outer exhaust pipe, a second pressure monitoring device is arranged on the hydrogen tail gas outer exhaust pipe at one side of the input end of the proportional flow regulating valve test site, and a purging valve test site is arranged on the hydrogen purging pipe;
the ejector test pipeline and the proportional valve test pipeline are connected in parallel at the input end of the hydrogen input pipe, the hydrogen source conveying pipe is connected with the input ends of the ejector test pipeline and the proportional valve test pipeline, and the ejector test pipeline is provided with a first switch valve and an ejector test site; the proportional valve test pipeline is provided with a second switch valve and a proportional valve test site, the ejector test site is connected with the output end of the hydrogen return pipe, the input end of the hydrogen return pipe is connected to the hydrogen tail gas exhaust pipe, and the hydrogen return pipe is provided with a hydrogen circulating pump test site; the hydrogen input pipe is provided with a hydrogen connecting pipe with a switch valve, the hydrogen connecting pipe is connected to a hydrogen return pipe close to the testing site of the ejector, and the hydrogen return pipe is also provided with a hydrogen flow monitoring device; the hydrogen input pipe is provided with a first pressure monitoring device;
an air flow monitoring device is arranged on the air conveying pipe, the input end of the air conveying pipe is connected with an air source, and an air compressor test site is arranged on the air conveying pipe; the air exhaust pipe is provided with a throttle valve test site, and the air exhaust pipe is also provided with a third pressure monitoring device.
2. The device for testing parts on an air path and a hydrogen path according to claim 1, wherein: the hydrogen flow monitoring device is a hydrogen flow meter.
3. The device for testing parts on an air path and a hydrogen path according to claim 1, wherein: the air flow monitoring device is an air flow meter.
4. The device for testing parts on an air path and a hydrogen path according to claim 1, wherein: each switch valve adopts an electromagnetic switch valve.
5. The device for testing parts on an air path and a hydrogen path according to claim 1, wherein: the first pressure monitoring device, the second pressure monitoring device and the third pressure monitoring device are respectively a first pressure sensor, a second pressure sensor and a third pressure sensor.
6. The device for testing parts on an air path and a hydrogen path according to claim 1, wherein: the number of the pile modules is more than or equal to two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321586332.3U CN220021178U (en) | 2023-06-21 | 2023-06-21 | Testing device for parts on air path and hydrogen path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321586332.3U CN220021178U (en) | 2023-06-21 | 2023-06-21 | Testing device for parts on air path and hydrogen path |
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| Publication Number | Publication Date |
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| CN220021178U true CN220021178U (en) | 2023-11-14 |
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| CN202321586332.3U Active CN220021178U (en) | 2023-06-21 | 2023-06-21 | Testing device for parts on air path and hydrogen path |
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2023
- 2023-06-21 CN CN202321586332.3U patent/CN220021178U/en active Active
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