CN114034472A - Construction method of test flow channel of air compressor equipment - Google Patents
Construction method of test flow channel of air compressor equipment Download PDFInfo
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- CN114034472A CN114034472A CN202110640503.5A CN202110640503A CN114034472A CN 114034472 A CN114034472 A CN 114034472A CN 202110640503 A CN202110640503 A CN 202110640503A CN 114034472 A CN114034472 A CN 114034472A
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- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 238000010276 construction Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a construction method of a test flow channel of air compressor equipment, a tested piece is arranged in a main flow channel, the main flow channel at the front end of the tested piece is bifurcated to form a first flow channel and a second flow channel, a first proportional valve is arranged on the first flow channel, a second proportional valve is arranged on the second flow channel, air enters the main flow channel through the first flow channel and the second flow channel respectively, and the inlet pressure of the tested piece is controlled by the first proportional valve and the second proportional valve. Compared with the prior art, the method has the advantages of avoiding the step of closing the tested piece for switching when testing different flow ranges, improving the convenience and efficiency of testing the air compressor equipment, improving the comprehensiveness of testing the air compressor and the like.
Description
Technical Field
The invention relates to the technical field of air compressor equipment testing, in particular to a construction method of a testing flow channel of air compressor equipment.
Background
At present, with the development of the fuel cell industry, the requirements on equipment such as an air compressor/a hydrogen circulating pump and the like are higher and higher, so that related test equipment is required to test the to-be-tested piece, the current test bench generally tests the performance parameters of the air compressor under different flow rates through double flow channels, as shown in fig. 1, the test bench adopts a mode of parallel connection of the double flow channels, and the air compressors with different flow rates adopt different flow channels to test.
However, the flow channel testing mode has self-limitation: the first is that when testing a large-flow air compressor, a large-flow meter is needed for testing, if testing a performance graph or a map graph in a small-flow range, a flow channel where the small-flow meter is located needs to be switched, and the air compressor needs to be closed in the switching process, so that the operation is complex; secondly, the flow channel testing mode cannot control the inlet pressure of the air compressor, so that the performance/map and other parameters of the air compressor under the condition of high altitude cannot be simulated.
Disclosure of Invention
The invention aims to overcome the defects that the switching operation between different flow test ranges is complex and the high-altitude environment cannot be simulated in the prior art, and provides a construction method of a test flow channel of air compressor equipment.
The purpose of the invention can be realized by the following technical scheme:
a tested piece is arranged in a main flow channel, the main flow channel at the front end of the tested piece is bifurcated to form a first flow channel and a second flow channel, a first proportional valve is arranged on the first flow channel, a second proportional valve is arranged on the second flow channel, air enters the main flow channel through the first flow channel and the second flow channel respectively, and the inlet pressure of the tested piece is controlled by the first proportional valve and the second proportional valve.
And a first flow meter is arranged on the first flow channel.
Further, the first flow meter is arranged between the first proportional valve and a connection of the first flow passage and the main flow passage.
And a second flowmeter is arranged on the main flow channel.
Furthermore, the second flowmeter is arranged between the part to be measured and the joint of the main flow channel and the first flow channel and the second flow channel.
The flow range detected by the first flow meter is smaller than the flow range detected by the second flow meter.
Further, the detection accuracy of the first flowmeter is high.
And a temperature and pressure sensor is arranged on the main flow channel and used for recording the air inlet pressure data of the measured piece.
Further, the temperature and pressure sensor is arranged between the second flowmeter and the measured piece.
The types of the tested piece comprise an air compressor and a hydrogen circulating pump.
The flow range controlled by the first proportional valve is smaller than the flow range controlled by the second proportional valve.
Compared with the prior art, the invention has the following beneficial effects:
1. the air compressor control system controls the air compressor through the cooperation of the first proportional valve with a small range and high precision in the first flow channel and the second proportional valve with a large range in the second flow channel, avoids the step of closing the tested piece for switching when testing different flow ranges, and improves the convenience and efficiency of air compressor equipment testing.
2. According to the invention, the control part of the air inflow in the air compressor equipment is arranged in the front end channel of the tested piece, and the high-altitude environment is simulated by controlling the opening degrees of the first proportional valve and the second proportional valve, so that the performance parameters of the air compressor under different air inlet pressures are tested, and the test comprehensiveness of the air compressor is improved.
Drawings
FIG. 1 is a schematic structural diagram of a dual flow channel test in the prior art;
fig. 2 is a schematic structural diagram of the present invention.
Reference numerals:
1-a proportional valve; 2-a flow meter; 3-a tested piece; 4-a main runner; 5-a first flow channel; 6-a second flow channel; 7-a first proportional valve; 8-a second proportional valve; 9-a first flow meter; 10-a second flow meter; 11-a temperature and pressure sensor; 12-pressure sensor.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Examples
As shown in fig. 2, a method for constructing a test flow channel of an air compressor device, which enables a test process to be simpler and more comprehensive in test conditions, specifically includes a tested piece 3 and a main flow channel 4 for testing, the tested piece 3 is disposed in the main flow channel 4, the main flow channel 4 at the front end of the tested piece 3 is bifurcated to form a first flow channel 5 and a second flow channel 6, the first flow channel 5 is provided with a first proportional valve 7, the second flow channel 6 is provided with a second proportional valve 8, air enters the main flow channel through the first flow channel 5 and the second flow channel 6, and the first proportional valve 7 and the second proportional valve 8 control the inlet pressure of the tested piece 3.
The first flow passage 5 is provided with a first flow meter 9.
A first flow meter 9 is provided between the first proportional valve 7 and the junction of the first flow channel 5 and the main flow channel 4.
The main flow passage 4 is provided with a second flow meter 10.
The second flowmeter 10 is provided between the connection points of the member to be measured 3 and the main flow passage 4 and the first and second flow passages 5, 6.
The main flow passage 4 is provided with a temperature and pressure sensor 11 for recording the air inlet pressure data of the tested piece 3.
The temperature and pressure sensor 11 is provided between the second flowmeter 10 and the measured object 3.
The range of the flow rate detected by the first flow meter 9 is smaller than the range of the flow rate detected by the second flow meter 10.
The detection accuracy of the first flow meter 9 is high.
The types of the test piece 3 include an air compressor and a hydrogen circulation pump.
The range of flow controlled by the first proportional valve 7 is smaller than the range of flow controlled by the second proportional valve 8.
In this embodiment, when testing the air compressor equipment, the tested piece 3 is connected to the main flow passage 4 through the pipeline, when testing a small flow rate, the first proportional valve 7 is opened, the second proportional valve 8 is closed, air enters the tested piece 3 through the first flow passage 5 and the main flow passage 4, the flow range detected by the first flowmeter 9 is small, the accuracy is high, and the performance of the tested piece 3 in the small flow range and parameters such as map are tested through the first flowmeter 9. The flow rate gradually reaches the test peak value of the first flow meter 7 as the rotation speed of the tested piece 3 increases, the first flow channel 5 is gradually closed by controlling the opening degree change of the first proportional valve 7 and the second proportional valve 8, the tested piece 3 is tested through the second flow channel 6, a map of the tested piece 3 is drawn through data recorded by the first flow meter 9, the second flow meter 10, the temperature and pressure sensor 11 and the like, and the performance parameters of the tested piece 3 are recorded.
Atmospheric pressure gradually reduces along with the increase of altitude, and if air compressor class equipment needs normal operating under high altitude, performance parameters such as map under different inlet pressure still need to be tested. In this embodiment, by controlling the opening degrees of the first proportional valve 7 and the second proportional valve 8, the intake pressure data of the tested object 3 is read by the temperature and pressure sensor 11 of the main flow passage 4, and the performance parameters of the tested object 3 under different intake pressures can be tested.
In addition, it should be noted that the specific embodiments described in the present specification may have different names, and the above descriptions in the present specification are only illustrations of the structures of the present invention. All equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the invention. Various modifications or additions may be made to the described embodiments or methods may be similarly employed by those skilled in the art without departing from the scope of the invention as defined in the appending claims.
Claims (10)
1. The construction method of the testing flow channel of the air compressor equipment is characterized by comprising a tested piece (3) and a main flow channel (4) for testing, wherein the tested piece (3) is arranged in the main flow channel (4), the main flow channel (4) at the front end of the tested piece (3) is branched to form a first flow channel (5) and a second flow channel (6), a first proportional valve (7) is arranged on the first flow channel (5), a second proportional valve (8) is arranged on the second flow channel (6), air enters the main flow channel through the first flow channel (5) and the second flow channel (6) respectively, and the inlet pressure of the tested piece (3) is controlled by the first proportional valve (7) and the second proportional valve (8).
2. The construction method of the test flow channel of the air compressor equipment according to claim 1, wherein a first flow meter (9) is arranged on the first flow channel (5).
3. The construction method of the test flow channel of the air compressor equipment is characterized in that the first flow meter (9) is arranged between the first proportional valve (7) and the connection position of the first flow channel (5) and the main flow channel (4).
4. The construction method of the test flow channel of the air compressor equipment according to the claim 3 is characterized in that a second flow meter (10) is arranged on the main flow channel (4).
5. The construction method of the test flow channel of the air compressor equipment is characterized in that the second flow meter (10) is arranged between the part to be tested (3) and the connection position of the main flow channel (4) and the first flow channel (5) and the second flow channel (6).
6. The construction method of the test flow channel of the air compressor equipment according to claim 5, wherein a temperature and pressure sensor (11) is arranged on the main flow channel (4).
7. The construction method of the test flow channel of the air compressor equipment is characterized in that the temperature and pressure sensor (11) is arranged between the second flowmeter (10) and the tested piece (3).
8. The construction method of the test flow channel of the air compressor equipment is characterized in that the range of the flow detected by the first flow meter (9) is smaller than the range of the flow detected by the second flow meter (10).
9. The construction method of the test flow channel of the air compressor equipment is characterized in that the types of the tested pieces (3) comprise an air compressor and a hydrogen circulating pump.
10. The method for constructing the test flow channel of the air compressor equipment is characterized in that the flow range controlled by the first proportional valve (7) is smaller than the flow range controlled by the second proportional valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110640503.5A CN114034472A (en) | 2021-06-09 | 2021-06-09 | Construction method of test flow channel of air compressor equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110640503.5A CN114034472A (en) | 2021-06-09 | 2021-06-09 | Construction method of test flow channel of air compressor equipment |
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| CN114034472A true CN114034472A (en) | 2022-02-11 |
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| CN202110640503.5A Pending CN114034472A (en) | 2021-06-09 | 2021-06-09 | Construction method of test flow channel of air compressor equipment |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101903840A (en) * | 2007-12-27 | 2010-12-01 | 株式会社堀场Stec | Flow rate ratio controlling apparatus |
| US20140230910A1 (en) * | 2013-02-20 | 2014-08-21 | Agilent Technologies, Inc. | Split-channel gas flow control |
| CN204841401U (en) * | 2015-06-05 | 2015-12-09 | 大唐环境产业集团股份有限公司 | Be applied to additive device of SNCR flue gas denitration system |
| CN206269979U (en) * | 2016-11-30 | 2017-06-20 | 潍坊安泰玛钢有限公司 | A kind of tightness test device |
| CN208525602U (en) * | 2018-02-08 | 2019-02-22 | 深圳融昕医疗科技有限公司 | Gas circuit structure, gas flow adjusting means and the ventilator with the device |
| CN110553831A (en) * | 2019-09-26 | 2019-12-10 | 中国第一汽车股份有限公司 | Fuel cell air compressor machine test system |
| CN112444419A (en) * | 2020-11-23 | 2021-03-05 | 北京理工大学 | Test performance testing device for electrically-driven two-stage centrifugal air compressor |
-
2021
- 2021-06-09 CN CN202110640503.5A patent/CN114034472A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101903840A (en) * | 2007-12-27 | 2010-12-01 | 株式会社堀场Stec | Flow rate ratio controlling apparatus |
| US20140230910A1 (en) * | 2013-02-20 | 2014-08-21 | Agilent Technologies, Inc. | Split-channel gas flow control |
| CN204841401U (en) * | 2015-06-05 | 2015-12-09 | 大唐环境产业集团股份有限公司 | Be applied to additive device of SNCR flue gas denitration system |
| CN206269979U (en) * | 2016-11-30 | 2017-06-20 | 潍坊安泰玛钢有限公司 | A kind of tightness test device |
| CN208525602U (en) * | 2018-02-08 | 2019-02-22 | 深圳融昕医疗科技有限公司 | Gas circuit structure, gas flow adjusting means and the ventilator with the device |
| CN110553831A (en) * | 2019-09-26 | 2019-12-10 | 中国第一汽车股份有限公司 | Fuel cell air compressor machine test system |
| CN112444419A (en) * | 2020-11-23 | 2021-03-05 | 北京理工大学 | Test performance testing device for electrically-driven two-stage centrifugal air compressor |
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