Testing system for expansion air compressor

Abstract

The utility model relates to the technical field of fuel cells, and discloses a test system for an expansion air compressor, which comprises an air inlet pipeline, an adjusting device and a bypass valve, according to the testing system, firstly, the compression part of the expansion air compressor directly sucks environmental gas through the gas inlet pipeline, then the gas output by the compression part is adjusted through the adjusting device so as to simulate the PH value and the humidity of the gas in a real working environment, and the PH value and the humidity of the mixed gas can be rapidly changed according to requirements; in addition, the system is further provided with a bypass valve, a fourth pipeline and a fifth pipeline, and the flow of gas entering the turbine part is adjusted by controlling the opening degree of the bypass valve so as to simulate the situation that the electric pile consumes oxygen, so that experimental data are more accurate, and the performance of the electric pile is improved. The test system not only can simulate a real working environment, but also is convenient to adjust test parameters, and is high in universality.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to a testing system for an expansion air compressor. Background Art

[0002] Since a large amount of liquid water will be discharged from the air outlet of the fuel cell system, this liquid water will not only impact the turbine of the high-speed expansion air compressor, but is also acidic and will cause corrosion to the turbine. Therefore, the existing fuel cell system not only has strength requirements for the turbine of the expansion air compressor, but also has corrosion resistance requirements, and the expansion air compressor needs to be performance tested before installation.

[0003] There are two main types of existing testing systems. One is to directly perform performance tests on raw materials. Although this method is simple, it cannot simulate the actual working environment and the test results are biased. The other is to directly place the expansion air compressor into the fuel cell system for testing. This method not only consumes a large amount of hydrogen, but also has very high testing costs. In addition, fuel cell systems with different test parameters need to be retested, and have poor versatility. Utility Model Content

[0004] The purpose of the utility model is to provide a test system for an expansion air compressor, which can not only simulate a real working environment, but also facilitate the adjustment of test parameters and has strong versatility.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a test system for an expansion air compressor, the expansion air compressor includes a compression part and a turbine part, the compression part has a first input end and a first output end, the turbine part has a second input end and a second output end, the test system for the expansion air compressor includes: an intake pipeline, a regulating device and a bypass valve; the regulating device includes a PH regulating tank, an atomizer and a humidifying chamber connected in sequence, the PH regulating tank is used to provide liquids with different PH values ​​to the atomizer, the atomizer is used to convert the liquid provided by the PH regulating tank into a gas-liquid mixture and transport it to the humidifying chamber, the humidifying chamber also has an inlet and an outlet; the intake pipeline is connected to the first input end, the intake pipeline is used to provide gas to the compression part, the first output end is connected to the inlet through the first pipeline, the outlet is connected to the second input end through the second pipeline, the second output end is connected to the third pipeline, one end of the bypass valve is connected to the second pipeline through the fourth pipeline, and the other end is connected to the third pipeline through the fifth pipeline, and the bypass valve is used to adjust the flow.

[0006] Optionally, an air filter is also included, which is arranged in the air intake pipeline and is used to filter the gas in the air intake pipeline.

[0007] Optionally, it further includes a first pressure sensor and a second pressure sensor, wherein the first pressure sensor is arranged on the intake pipe and the second pressure sensor is arranged on the first pipe.

[0008] Optionally, a flow meter is also included, which is arranged in the intake pipeline and is used to detect the gas flow in the intake pipeline.

[0009] Optionally, an intercooler is also included, and the intercooler is arranged in the first pipeline and is used to adjust the temperature of the gas in the first pipeline.

[0010] Optionally, it further includes a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is arranged in the intake pipe, and the second temperature sensor is arranged in the first pipe and is located between the intercooler and the inlet.

[0011] Optionally, it also includes a pressure control valve, which is arranged on the first pipeline.

[0012] Optionally, a muffler is also included, and the muffler is arranged in the third pipeline.

[0013] Optionally, the regulating device further comprises a filler, wherein the filler is arranged on the pH regulating tank, the pH regulating tank is connected to the atomizer via the filler, and the filler is used to control the flow rate of the liquid output from the pH regulating tank.

[0014] Compared with the prior art, the test system for an expansion air compressor of the utility model embodiment has the following beneficial effects: the test system first allows the compression part of the expansion air compressor to directly inhale the ambient gas through the air intake pipeline, and then adjusts the gas output by the compression part through the regulating device. Specifically, the pH value of the liquid input into the atomizer is first adjusted by the pH regulating tank, and then the gas is converted into a gas-liquid mixture by the atomizer and input into the humidifier to be mixed with the gas output by the compression part, so that the mixed gas can simulate the pH value and humidity of the gas in the real working environment, and the pH value and humidity of the mixed gas can be quickly changed according to needs; and then the turbine part is impacted to complete the performance test. In addition, the system is also provided with a bypass valve, a fourth pipeline and a fifth pipeline. The gas flow entering the turbine part is adjusted by controlling the opening of the bypass valve to simulate the scenario of oxygen consumption by the fuel cell stack, so that the experimental data is more accurate. The test system can not only simulate the real working environment, but also facilitate the adjustment of test parameters, and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the test system for an expansion air compressor according to an embodiment of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the regulating device according to an embodiment of the utility model.

[0017] In the figure, 1, expansion air compressor; 1a, compression part; 1b, turbine part; 2, intake pipeline; 3, regulating device; 3a, PH regulating tank; 3b, atomizer; 3c, humidifying chamber; 3d, filler; 4, bypass valve; 5, first pipeline; 6, second pipeline; 7, third pipeline; 8, fourth pipeline; 9, fifth pipeline; 10, air filter; 11, first pressure sensor; 12, second pressure sensor; 13, flow meter; 14, intercooler; 15, first temperature sensor; 16, second temperature sensor; 17, pressure control valve; 18, muffler. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] like Figure 1 and Figure 2As shown, a test system for an expansion air compressor 1 according to an embodiment of the utility model, the expansion air compressor 1 includes a compression part 1a and a turbine part 1b, the compression part 1a has a first input end and a first output end, the turbine part 1b has a second input end and a second output end, and the test system for the expansion air compressor 1 includes: an intake pipeline 2, a regulating device 3 and a bypass valve 4; the regulating device 3 includes a PH regulating tank 3a, an atomizer 3b and a humidifying chamber 3c connected in sequence, the PH regulating tank 3a is used to provide liquids with different PH values ​​to the atomizer 3b, and the atomizer 3b It is used to convert the liquid provided by the pH adjustment tank 3a into a gas-liquid mixture and transport it to the humidification chamber 3c, which also has an inlet and an outlet; the air intake pipeline 2 is connected to the first input end, and the air intake pipeline 2 is used to provide gas to the compression part 1a, the first output end is connected to the inlet through the first pipeline 5, the outlet is connected to the second input end through the second pipeline 6, the second output end is connected to the third pipeline 7, one end of the bypass valve 4 is connected to the second pipeline 6 through the fourth pipeline 8, and the other end is connected to the third pipeline 7 through the fifth pipeline 9, and the bypass valve 4 is used to adjust the flow rate.

[0022] Based on the above scheme, the test system first allows the compression part 1a of the expansion air compressor 1 to directly inhale the ambient gas through the intake pipe 2, and then adjusts the gas output by the compression part 1a through the regulating device 3. Specifically, the pH value of the liquid input into the atomizer 3b is first adjusted by the pH regulating tank 3a, and then the atomizer 3b converts the gas into a gas-liquid mixture, and inputs it into the humidifier to mix with the gas output by the compression part 1a, so that the mixed gas can simulate the pH value and humidity of the gas in the real working environment, and can quickly change the pH value and humidity of the mixed gas according to needs; then impact the turbine part 1b to complete the performance test. In addition, the system is also provided with a bypass valve 4, a fourth pipeline 8 and a fifth pipeline 9. The gas flow entering the turbine part 1b is adjusted by controlling the opening of the bypass valve 4 to simulate the scenario of oxygen consumption by the fuel cell stack, so that the experimental data is more accurate. The test system can not only simulate the real working environment, but also facilitate the adjustment of test parameters, and has strong versatility.

[0023] like Figure 1 As shown, in order to protect the expansion air compressor 1, an air filter 10 is also included. The air filter 10 is arranged in the air intake pipeline 2, and is used to filter the gas in the air intake pipeline 2 to prevent impurities in the ambient gas from entering the expansion air compressor 1 and causing damage to the expansion air compressor 1.

[0024] like Figure 1As shown, for the convenience of testing, it also includes a first pressure sensor 11 and a second pressure sensor 12. The first pressure sensor 11 is arranged on the intake pipe 2, and the second pressure sensor 12 is arranged on the first pipe 5. The first pressure sensor 11 is used to detect the ambient pressure, and the second pressure sensor 12 is used to detect the gas pressure output from the compression part 1a. The working pressure ratio of the expansion air compressor 1 is calculated by the cooperation of the first pressure sensor 11 and the second pressure sensor 12.

[0025] like Figure 1 As shown, in order to facilitate testing, a flow meter 13 is also included. The flow meter 13 is arranged in the intake pipeline 2 and is used to detect the gas flow in the intake pipeline 2.

[0026] like Figure 1 As shown, in order to facilitate testing, the temperature of the gas is simulated, and an intercooler 14 is also included. The intercooler 14 is arranged in the first pipeline 5 and is used to adjust the temperature of the gas in the first pipeline 5 so that the temperature of the gas is close to the temperature of the fuel cell system.

[0027] like Figure 1 As shown, for the convenience of testing, a first temperature sensor 15 and a second temperature sensor 16 are also included. The first temperature sensor 15 is arranged in the intake pipe 2, and the second temperature sensor 16 is arranged in the first pipe 5 and is located between the intercooler 14 and the inlet. The first temperature sensor 15 and the second temperature sensor 16 cooperate to monitor the temperature change of the gas in real time.

[0028] like Figure 1 As shown, in order to protect the expansion air compressor 1, it also includes a pressure control valve 17. The pressure control valve 17 is arranged on the first pipeline 5 to control the pressure of the first output end of the expansion air compressor 1 to form a pressure ratio, allowing the expansion air compressor 1 to enter the operating area to prevent the expansion air compressor 1 from surging.

[0029] like Figure 1 As shown, for ease of use, a muffler 18 is also included. The muffler 18 is arranged in the third pipeline 7. The muffler 18 reduces the gas noise during the operation of the expansion air compressor 1 to prevent the noise from harming the tester.

[0030] like Figure 2 As shown, for the convenience of testing, the regulating device 3 also includes a filler 3d, which is arranged on the pH regulating tank 3a. The pH regulating tank 3a is connected to the atomizer 3b through the filler 3d. The filler 3d is used to control the liquid flow output from the pH regulating tank 3a so that the liquid flow is close to the water production of the fuel cell system.

[0031] In summary, the embodiment of the utility model provides a test system for an expansion air compressor 1, which first allows the compression part 1a of the expansion air compressor 1 to directly inhale ambient gas through the air intake pipeline 2, and then adjusts the gas output by the compression part 1a through the adjustment device 3. Specifically, the pH value of the liquid input into the atomizer 3b is first adjusted by the pH adjustment tank 3a, and then the atomizer 3b converts the gas into a gas-liquid mixture, and inputs it into the humidifier to mix with the gas output by the compression part 1a, so that the mixed gas can simulate the pH value and humidity of the gas in the real working environment, and can quickly change the pH value and humidity of the mixed gas according to needs; and then impacts the turbine part 1b to complete the performance test. In addition, the system is also provided with a bypass valve 4, a fourth pipeline 8 and a fifth pipeline 9. The gas flow entering the turbine part 1b is adjusted by controlling the opening of the bypass valve 4 to simulate the scenario of oxygen consumption by the fuel cell stack, so that the experimental data is more accurate. The test system can not only simulate the real working environment, but also facilitate the adjustment of test parameters, and has strong versatility.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A test system for an expander air compressor, the expander air compressor comprising a compression part and a turbine part, the compression part having a first input end and a first output end, the turbine part having a second input end and a second output end, characterized in that: include: Inlet pipe, regulator and bypass valve; The regulating device comprises a pH regulating tank, an atomizer and a humidifying chamber connected in sequence, wherein the pH regulating tank is used to provide liquids with different pH values ​​to the atomizer, and the atomizer is used to convert the liquid provided by the pH regulating tank into a gas-liquid mixture and transport it to the humidifying chamber, and the humidifying chamber also has an inlet and an outlet; The intake pipeline is connected to the first input end, and the intake pipeline is used to provide gas to the compression part. The first output end is connected to the inlet through the first pipeline, the outlet is connected to the second input end through the second pipeline, and the second output end is connected to the third pipeline. One end of the bypass valve is connected to the second pipeline through the fourth pipeline, and the other end is connected to the third pipeline through the fifth pipeline. The bypass valve is used to adjust the flow rate.

2. The test system for an expansion air compressor according to claim 1, characterized in that: It also includes an air filter, which is arranged on the air intake pipeline and is used to filter the gas in the air intake pipeline.

3. The test system for an expansion air compressor according to claim 1, characterized in that: It also includes a first pressure sensor and a second pressure sensor, wherein the first pressure sensor is arranged on the intake pipe, and the second pressure sensor is arranged on the first pipe.

4. The test system for an expansion air compressor according to claim 1, characterized in that: It also includes a flow meter, which is arranged in the air intake pipeline and is used to detect the gas flow in the air intake pipeline.

5. The test system for an expansion air compressor according to claim 1, characterized in that: It also includes an intercooler, which is arranged in the first pipeline and is used to adjust the temperature of the gas in the first pipeline.

6. The test system for an expansion air compressor according to claim 5, characterized in that: The system further comprises a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is arranged in the intake pipe, and the second temperature sensor is arranged in the first pipe and is located between the intercooler and the inlet.

7. The test system for an expansion air compressor according to claim 1, characterized in that: It also includes a pressure control valve, which is arranged on the first pipeline.

8. The test system for an expansion air compressor according to claim 1, characterized in that: It also includes a muffler, which is arranged on the third pipeline.

9. The test system for an expansion air compressor according to claim 1, characterized in that: The regulating device also includes a filler, which is arranged on the pH regulating tank. The pH regulating tank is connected to the atomizer through the filler, and the filler is used to control the flow rate of the liquid output from the pH regulating tank.

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