Cyclic test system of hydrogen compressor

Abstract

The utility model discloses a hydrogen compressor circulation test system which is arranged on a circulation gas path between an outlet and an inlet of a tested compressor, and hydrogen passes through the outlet of the tested compressor and the circulation test system and then returns to the inlet of the tested compressor. The cycle test system comprises a first pressure test device, a first thermometer, a first pressure reduction device, a cooling device, a second thermometer and a second pressure test device which are arranged in sequence, wherein the first pressure testing device and the first thermometer are respectively used for testing the pressure and the temperature of outlet gas of the tested compressor, and the second pressure testing device and the second thermometer are respectively used for testing the pressure and the temperature of inlet gas of the tested compressor. The cycle test system can realize cyclic utilization of hydrogen of the tested compressor.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen compressors, and in particular to a hydrogen compressor circulation test system. Background Art

[0002] As an infrastructure for providing hydrogen to fuel cell vehicles, the number of hydrogen refueling stations is increasing continuously. And the hydrogen compressor, as a core component of the hydrogen refueling station, its performance is crucial. During the production process of the hydrogen compressor, its performance needs to be tested. The disadvantage of the current hydrogen compressor test equipment is that it cannot recycle the test hydrogen of the compressor under test. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related technologies to some extent. For this reason, an object of the utility model is to provide a hydrogen compressor circulation test system, which can recycle the test hydrogen of the compressor under test.

[0004] The technical solution adopted by the utility model is as follows:

[0005] In the first aspect, the utility model provides a hydrogen compressor circulation test system, wherein the circulation test system is arranged on the circulation gas path between the outlet and the inlet of the compressor under test, and hydrogen passes through the outlet of the compressor under test, the circulation test system, and then returns to the inlet of the compressor under test. The circulation test system includes: a first pressure test device, a first thermometer, a first pressure reducing device, a temperature reducing device, a second thermometer, and a second pressure test device arranged in sequence; wherein, the first pressure test device and the first thermometer are respectively used to test the outlet gas pressure and temperature of the compressor under test, and the second pressure test device and the second thermometer are respectively used to test the inlet gas pressure and temperature of the compressor under test.

[0006] Wherein, a first gas cylinder, a regulating valve, and a third pressure test device are further arranged between the first thermometer and the first pressure reducing device; the first gas cylinder is used for buffering the gas pressure of the circulation gas path and storing high-pressure gas, the regulating valve is used to adjust the outlet back pressure of the compressor under test to test the performance of the compressor under test at different outlet pressures, and the third pressure test device is used to test the pressure of the gas at the inlet of the first pressure reducing device.

[0007] Wherein, a fourth pressure test device and a second gas cylinder are further arranged between the first pressure reducing device and the temperature reducing device; the fourth pressure test device is used to test the pressure of the gas at the outlet of the first pressure reducing device, and the second gas cylinder is used for buffering the gas pressure of the circulation gas path and storing high-pressure gas.

[0008] Among them, the first pressure testing device includes a first pressure sensor and / or a first pressure gauge, the second pressure testing device includes a second pressure sensor and / or a second pressure gauge, the third pressure testing device includes a third pressure sensor and / or a third pressure gauge, and the fourth pressure testing device includes a fourth pressure sensor and / or a fourth pressure gauge.

[0009] Among them, the circulation testing system further includes a controller. The regulating valve is an electric regulating valve. The first thermometer and the second thermometer are respectively temperature sensors. The controller is electrically connected to the first thermometer, the first pressure sensor, the regulating valve, the second pressure sensor, the third pressure sensor, the fourth pressure sensor, and the second thermometer respectively.

[0010] Among them, a second pressure reducing device is further arranged between the cooling device and the second thermometer. The second pressure reducing device is used to adjust the inlet gas pressure of the compressor under test to test the performance of the compressor under test at different inlet pressures.

[0011] Among them, both the first pressure reducing device and the second pressure reducing device are pressure reducing valves.

[0012] Among them, the cooling device is a heat exchanger.

[0013] The beneficial effects of the present utility model are:

[0014] The present utility model adopts a circulation testing system which is respectively connected to the inlet and outlet of the compressor under test. The circulation testing system includes a pressure reducing device and a cooling device arranged between the outlet and inlet of the compressor under test, so that the test hydrogen is cooled and depressurized after flowing out of the outlet of the compressor under test and then sent to the inlet of the compressor under test, thereby realizing the recycling of the hydrogen of the compressor under test.

[0015] Furthermore, by arranging a regulating valve at the inlet of the compressor under test to adjust the outlet back pressure of the compressor under test, and arranging a pressure reducing valve at the inlet of the compressor under test to adjust the inlet pressure of the compressor under test, the inlet and outlet pressures of the compressor under test can be set. In this way, the performance of the compressor under test at different inlet and outlet pressures can be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a hydrogen compressor circulation testing system of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0018] Please refer to Figure 1 , Figure 1It is a schematic structural diagram of a hydrogen compressor cycle test system. The cycle test system is arranged on the cycle gas path between the outlet and the inlet of the compressor under test. Hydrogen gas passes through the outlet of the compressor under test, this cycle test system, and then returns to the inlet of the compressor under test. Understandably, the outlet and inlet of the compressor under test are connected to this cycle test system, and the components of this cycle test system are connected by pipelines.

[0019] As Figure 1 shown, this cycle test system includes: a first pressure test device 11, a first thermometer 12, a first pressure reducing device 13, a temperature reducing device 14, a second thermometer 15, and a second pressure test device 16 arranged in sequence. Among them, the first pressure test device 11 and the first thermometer 12 are respectively used to test the outlet gas pressure and temperature of the compressor under test, and the second pressure test device 16 and the second thermometer 15 are respectively used to test the inlet gas pressure and temperature of the compressor under test. Understandably, the position order of the first pressure test device 11 and the first thermometer 12, and the position order of the second thermometer 15 and the second pressure test device 16 can be swapped.

[0020] Preferably, a first gas cylinder 17, a regulating valve 18, and a third pressure test device 19 are further arranged between the first thermometer 12 and the first pressure reducing device 13. The first gas cylinder 17 is used for gas pressure buffering of the cycle gas path and storing high-pressure gas. The regulating valve 18 is used to adjust the outlet back pressure of the compressor under test to test the performance of the compressor under test at different outlet pressures. The third pressure test device 19 is used to test the pressure of the gas at the inlet of the first pressure reducing device 13, that is, the gas pressure adjusted by the regulating valve 18.

[0021] Preferably, a fourth pressure test device 20 and a second gas cylinder 21 are further arranged between the first pressure reducing device 13 and the temperature reducing device 14. The fourth pressure test device 20 is used to test the pressure of the gas at the outlet of the first pressure reducing device 13. The second gas cylinder 21 is used for gas pressure buffering of the cycle gas path and storing high-pressure gas.

[0022] As Figure 1 shown, the first pressure test device 11 includes a first pressure sensor 111 and a first pressure gauge 112, the second pressure test device 16 includes a second pressure sensor 161 and a second pressure gauge 162, the third pressure test device 19 includes a third pressure sensor 191 and a third pressure gauge 192, and the fourth pressure test device 20 includes a fourth pressure sensor 201 and a fourth pressure gauge 202. In other embodiments, the pressure test device can also be only a pressure sensor, or only a pressure gauge, as long as it can test the gas pressure on the gas path. The advantage of using a pressure sensor to test the gas pressure is that the pressure can be remotely read, while the pressure gauge can only read the pressure nearby.

[0023] Preferably, the cycle test system further includes a controller (not shown in the figure). The regulating valve 18 is an electric regulating valve. The first thermometer 12 and the second thermometer 15 are respectively temperature sensors. The controller is electrically connected to the first thermometer 12, the first pressure sensor 111, the regulating valve 18, the second pressure sensor 161, the third pressure sensor 191, the fourth pressure sensor 201, and the second thermometer 15 respectively. In this way, the controller can remotely control the operation of the regulating valve 18 and can also remotely read the gas pressure and temperature.

[0024] Preferably, a second pressure reducing device 22 is further provided between the cooling device 14 and the second thermometer 15. The second pressure reducing device is used to adjust the inlet gas pressure of the compressor under test to test the performance of the compressor under test at different inlet pressures.

[0025] Optionally, both the first pressure reducing device 13 and the second pressure reducing device 22 are pressure reducing valves, and the cooling device 14 is a heat exchanger.

[0026] In addition, a flow meter 23 is provided at the inlet of the compressor under test to test the gas flow rate of the cycle gas path.

[0027] The working process of the present utility model is as follows:

[0028] First, connect this test system to the compressor under test, connect the cooling device 14 to the cooling water, and then start the compressor under test to work.

[0029] Adjust the regulating valve 18 to make the back pressure at the outlet of the compressor under test reach the required pressure for testing. Then adjust the first pressure reducing device 13 (no longer operate frequently after the initial adjustment) to output the reduced-pressure gas after primary pressure reduction. The reduced-pressure gas enters the cooling device 14 through the buffer storage of the first gas cylinder 17 to cool the compressed gas. After cooling, the gas passes through the second pressure reducing device 22 to adjust the inlet gas pressure of the compressor under test. Finally, the gas re-enters the compressor under test through the flow meter 23 to realize the gas cycle test of the compressor under test. During this period, record the readings of each pressure test device and thermometer.

[0030] When the inlet gas pressure, inlet gas temperature, outlet gas pressure, and outlet gas temperature of the compressor under test are set to various test values, observe whether the performance of the compressor meets the standards.

[0031] The above is a specific description of the preferred embodiment of the present utility model, but the present invention is not limited to the described embodiment. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A hydrogen compressor cycle test system, characterized in that: The circulation test system is arranged on the circulation gas path between the outlet and the inlet of the tested compressor, and the hydrogen passes through the outlet of the tested compressor, the circulation test system, and then returns to the inlet of the tested compressor. The circulation test system comprises: a first pressure test device, a first thermometer, a first pressure reduction device, a temperature reduction device, a second thermometer and a second pressure test device which are arranged in sequence; The first pressure testing device and the first thermometer are used to test the outlet gas pressure and temperature of the tested compressor respectively, and the second pressure testing device and the second thermometer are used to test the inlet gas pressure and temperature of the tested compressor respectively.

2. The cycle test system according to claim 1, characterized in that: A first gas cylinder, a regulating valve and a third pressure testing device are also arranged between the first thermometer and the first pressure reducing device; the first gas cylinder is used for buffering the gas pressure of the circulating gas circuit and storing high-pressure gas, the regulating valve is used for adjusting the outlet back pressure of the compressor under test to test the performance of the compressor under test at different outlet pressures, and the third pressure testing device is used for testing the pressure of the inlet gas of the first pressure reducing device.

3. The cycle test system according to claim 2, characterized in that: A fourth pressure testing device and a second gas cylinder are also provided between the first pressure reducing device and the temperature reducing device; the fourth pressure testing device is used to test the pressure of the gas at the outlet of the first pressure reducing device, and the second gas cylinder is used to buffer the gas pressure of the circulating gas circuit and store high-pressure gas.

4. The cycle test system according to claim 3, characterized in that: The first pressure testing device includes a first pressure sensor and / or a first pressure gauge, the second pressure testing device includes a second pressure sensor and / or a second pressure gauge, the third pressure testing device includes a third pressure sensor and / or a third pressure gauge, and the fourth pressure testing device includes a fourth pressure sensor and / or a fourth pressure gauge.

5. The cycle test system according to claim 4, characterized in that: The circulation test system also includes a controller, the regulating valve is an electric regulating valve, the first thermometer and the second thermometer are temperature sensors respectively, and the controller is electrically connected to the first thermometer, the first pressure sensor, the regulating valve, the second pressure sensor, the third pressure sensor, the fourth pressure sensor and the second thermometer respectively.

6. The cycle test system according to claim 1, characterized in that: A second pressure reducing device is also provided between the temperature reducing device and the second thermometer, and the second pressure reducing device is used to adjust the inlet gas pressure of the tested compressor to test the performance of the tested compressor under different inlet pressures.

7. The cycle test system according to claim 6, characterized in that: The first pressure reducing device and the second pressure reducing device are both pressure reducing valves.

8. The cycle test system according to claim 1, characterized in that: The cooling device is a heat exchanger.

9. The cycle test system according to claim 1, characterized in that: A flow meter is also provided at the inlet of the compressor under test.

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