A fuel cell air compressor test platform

Abstract

The present invention discloses a fuel cell air compressor test platform, comprising an air compressor module, a gas delivery mechanism, a motor drive mechanism, a pneumatic adjustment mechanism, a cooling mechanism, a measuring mechanism and a measurement control mechanism, wherein the air compressor module comprises an air compressor and an air compressor controller; the air compressor compresses and processes the air delivered by the gas delivery mechanism under the drive of the motor drive mechanism, and the air compressor controller controls the working speed, the cooling mechanism controls the operating temperature, the pneumatic adjustment mechanism adjusts the inlet and outlet gas flow rates, and the measuring mechanism measures and displays the test parameters in real time; the measurement control mechanism is electrically connected to the air compressor module and performs performance testing on the air compressor in a working state, reflects the working state of the air compressor in many aspects in a safe and reliable operating space, has comprehensive test functions and high measurement accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of equipment testing platforms, and in particular to a fuel cell air compressor testing platform. Background Art

[0002] With the development of the national economy, the design and manufacturing technology of air compressors has made great progress and has been widely used in social production. Air compressors are the core of gas transmission systems and core components of hydrogen fuel cell engines.

[0003] The normal operation of the air compressor is the key to safe production, but there is currently a lack of effective means for the performance testing of air compressors. The existing air compressor testing equipment mostly tests the air compressor operating parameters such as volume flow range, temperature, exhaust pressure range, single-machine drive power and other parameters or a combination of several of them. Therefore, there is no relatively comprehensive test system platform for measuring the performance parameters of air compressors in China, which affects the development of air compressor technology. Summary of the invention

[0004] The purpose of the present invention is to provide a fuel cell air compressor test platform to solve the technical problem of the lack of a test platform for comprehensively testing the performance parameters of air compressors in the prior art.

[0005] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0006] A fuel cell air compressor test platform, comprising an air compressor module, a gas delivery mechanism, a motor drive mechanism, a pneumatic adjustment mechanism, a cooling mechanism, a measuring mechanism and a measuring control mechanism, wherein the air compressor module comprises an air compressor and an air compressor controller connected to the air compressor;

[0007] The gas delivery mechanism is connected to a port on one side of the air compressor, the motor drive mechanism that provides driving force for the air compressor module is connected to a port on one side of the air compressor controller, and the other port of the air compressor controller is connected to the cooling mechanism; the air compressor is driven by the motor drive mechanism to compress and process the air delivered by the gas delivery mechanism, and the working speed is controlled by the air compressor controller, the cooling mechanism is used to control and adjust the temperature of the motor in the motor drive mechanism and the air compressor controller, the pneumatic adjustment mechanism connected to one end of the air compressor is used to adjust the inlet and outlet gas flow of the air compressor, and the measurement and control mechanism is electrically connected to the air compressor module and performs performance testing on the air compressor in a working state.

[0008] As a preferred solution of the present invention, the cooling mechanism includes a first cooling water tank and a second cooling water tank connected by pipelines on both sides, the first cooling water tank is connected to the air compressor controller through a pipeline, the second cooling water tank is connected to the air compressor through a pipeline, a heater is arranged on the second cooling water tank, and a water pump is arranged on the connecting pipeline between the first cooling water tank and the second cooling water tank.

[0009] As a preferred solution of the present invention, the motor drive mechanism includes a power distribution cabinet and an inverter connected to the power distribution cabinet, and the inverter is connected to the air compressor controller.

[0010] As a preferred solution of the present invention, the pneumatic adjustment mechanism includes a pneumatic pipeline and an electric control valve and an electric fine-tuning valve installed in parallel on the pneumatic pipeline. One end of the pneumatic pipeline is connected to the air compressor, and the measuring mechanism is adaptively installed on the pneumatic pipeline.

[0011] As a preferred solution of the present invention, the gas delivery mechanism includes an air filter, the air filter is connected to the air compressor through an air pipeline, and the measuring mechanism is adaptively installed on the air pipeline.

[0012] As a preferred solution of the present invention, the measuring mechanism includes a pressure sensor, a temperature sensor, and a flow meter.

[0013] As a preferred solution of the present invention, the first cooling water tank and the second cooling water tank share a water circulation structure, and the water circulation structure includes a first branch for the first cooling water tank to circulate cold water to dissipate heat for the air compressor controller and the motor and controller in the air compressor, and a second branch for heating the gas in the air compressor. The electric regulating valve, electric fine-tuning valve and measuring mechanism are adaptively installed on the first branch and the second branch to adjust the liquid flow and temperature in the water circulation structure.

[0014] As a preferred scheme of the present invention, the liquid in the second cooling water tank is pumped out by the water pump and enters the first branch for circulation. After the liquid in the first branch is circulated and cooled in the first cooling water tank, it flows through the air compressor controller and the air compressor for cooling and heat dissipation. The water after cooling and heat dissipation of the air compressor controller and the air compressor circulates back to the second cooling water tank through the second branch. The water in the second cooling water tank heated by the heater heats the gas in the air compressor via the second branch. The water after flowing through the air compressor flows into the first cooling water tank for circulated cooling and flows back to the second cooling water tank through the first branch.

[0015] As a preferred solution of the present invention, the measurement and control mechanism is electrically connected to the mechanism equipment with the air compressor module as the core, and the measurement and control mechanism includes a control console, on which are arranged measurement sensors, a measurement box, an industrial computer and a data acquisition card, which are used to complete the measurement of air compressor performance parameters, data processing and adjustment of test conditions.

[0016] As a preferred solution of the present invention, a water circulation controller is also provided on the console to control the alternating circulation of cold and hot water in the first branch and the second branch of the water circulation structure.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention is provided with an air compressor module (including an air compressor and an air compressor controller), a gas delivery mechanism, a motor drive mechanism, a pneumatic adjustment mechanism, a cooling mechanism, a measuring mechanism and a measurement control mechanism; the air compressor is driven by the motor drive mechanism to compress and process the air delivered by the gas delivery mechanism, and the air compressor controller controls the working speed, the cooling mechanism controls the motor and the controller cooling water temperature, the pneumatic adjustment mechanism adjusts the inlet and outlet gas flow, the measuring mechanism measures and displays the test parameters in real time, and the data of each test parameter is output as a summary report; the measurement control mechanism performs a performance test on the air compressor in a working state, and reflects the working state of the air compressor in many aspects in a safe and reliable operating space, and the test function is comprehensive and the measurement accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] Figure 1 A schematic diagram of the overall structure of an air compressor test platform provided by an embodiment of the present invention;

[0021] The numbers in the figure represent the following:

[0022] 1-air compressor module; 101-air compressor; 102-air compressor controller;

[0023] 2-cooling mechanism; 201-water pump; 202-first cooling water tank; 203-heater; 204-second cooling water tank; 21-water circulation structure; 211-first branch; 212-second branch;

[0024] 3- measuring mechanism; 301- temperature sensor; 302- pressure sensor; 303- flow meter;

[0025] 4-pneumatic adjustment mechanism; 401-pneumatic pipeline; 402-electric regulating valve; 403-electric fine-tuning valve;

[0026] 5-gas delivery mechanism; 501-air filter; 502-air pipeline;

[0027] 6-motor drive mechanism; 601-inverter; 602-power distribution cabinet; 7-measurement and control mechanism; 71-control console. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In actual implementation, the air compressor of hydrogen-oxygen fuel cells is used as an example for detailed explanation. The raw materials of the two electrodes of hydrogen-oxygen fuel cells are mainly hydrogen and oxygen. When the hydrogen-oxygen fuel cell is working, the air compressor compresses the air to obtain qualified air, and then a series of subsequent treatments are performed to obtain the two-electrode hydrogen and oxygen raw materials, which are transported to the equipment for reaction. Therefore, the air compressor is the beginning of the raw material processing of hydrogen-oxygen fuel cells, and the quality of the air compressor is particularly important.

[0030] like Figure 1 As shown, the present invention provides a fuel cell air compressor test platform, including an air compressor module 1, a gas delivery mechanism 5, a motor drive mechanism 6, a pneumatic adjustment mechanism 4, a cooling mechanism 2, a measuring mechanism 3 and a measuring control mechanism 7. The air compressor module 1 includes an air compressor 101 and an air compressor controller 102 connected to the air compressor 101.

[0031] The basic composition and connection relationship of each main structure are as follows:

[0032] The motor drive mechanism 6 is used to drive the air compressor to rotate to complete the performance test experiment, including a distribution cabinet 602 and an inverter 601 connected to the distribution cabinet 602, and the inverter 601 is connected to the air compressor controller 102. An ammeter and a voltmeter are installed on the electrical branch of the motor drive mechanism 6 to monitor the electrical parameters in real time. The branch DC power supply power is maintained at 20 kilowatts per hour, and the voltage is adjustable within 0 to 450 volts. The air compressor controller can drive the air compressor to the required measurement speed according to the control instructions.

[0033] The measuring mechanism 3 includes a pressure sensor 302, a temperature sensor 301, and a flow meter 303, which are mainly arranged on each connecting branch to measure the working parameters in real time. The working parameters measured by the measuring mechanism 3 are monitored and recorded, and after the test is completed, they are output and summarized to form a test report, so that the test data has a high degree of visualization.

[0034] The gas delivery mechanism 5 includes an air filter 501, which is connected to the air compressor 101 through an air pipeline 502. The measuring mechanism 3 is adaptively installed on the air pipeline 502. The air filter 501 purifies the air before the air enters the air compressor 101 to ensure that the air entering the air compressor 101 is relatively pure, thereby improving the test accuracy.

[0035] The pneumatic regulating mechanism 4 includes a pneumatic pipeline 401 and an electric regulating valve 402 and an electric fine-tuning valve 403 installed in parallel on the pneumatic pipeline 401. One end of the pneumatic pipeline 401 is connected to the air compressor 101, and the measuring mechanism 3 is adaptively installed on the pneumatic pipeline 401. In specific implementation, a branch formed by a series connection of a flow meter 303 and an electric fine-tuning valve 403 is connected in parallel with a branch formed by another flow meter 303 and an electric regulating valve 402, and connected to the pneumatic pipeline 401. A pressure sensor 302 and a temperature sensor 301 are connected in series on the main trunk of the pneumatic pipeline 401, and the inlet and outlet air flow of the air compressor 101 is adjusted in two ways of coarse adjustment and fine adjustment, and the measurement accuracy is relatively high.

[0036] The cooling mechanism 2 is used to control the cooling water of the motor and the motor driver within the required temperature range, and the cooling water temperature control range is -5 to 90 degrees Celsius. The cooling mechanism 2 includes a first cooling water tank 202 and a second cooling water tank 204 connected by pipelines on both sides. The first cooling water tank 202 is connected to the air compressor controller 102 through a pipeline, and the second cooling water tank 204 is connected to the air compressor 101 through a pipeline. A heater 203 is provided on the second cooling water tank 204 to heat the water in the cooling box when the water temperature needs to be increased. A water pump 201 is provided on the connecting pipeline between the first cooling water tank 202 and the second cooling water tank 204. The circulating water pump 201 circulates the water in the cooling mechanism 2 to save resources.

[0037] The first cooling water tank 202 and the second cooling water tank 204 share a water circulation structure 21, which includes a first branch 211 for the first cooling water tank 202 to circulate cold water to dissipate heat for the air compressor controller 102 and the motor and controller in the air compressor 101, and a second branch 212 for heating the gas in the air compressor 101. An electric regulating valve 402, an electric fine-tuning valve 403 and a measuring mechanism 3 are adaptively installed on the first branch 211 and the second branch 212 to adjust the liquid flow and temperature in the water circulation structure 21.

[0038] The first cooling water tank 202 and the second cooling water tank 204 and the first branch 211 and the second branch 212 form a closed water circulation loop to dissipate heat and cool the controller, chip, motor, etc. of the air compressor 101 and the air compressor controller 102, and to heat and pressurize the gas in the air compressor 101 when necessary. A temperature sensor 301, a flow meter 303, and a pressure sensor 302 are adaptively installed on each connecting branch to measure and control the water temperature and water flow in real time. For example, in a specific implementation, a temperature sensor 301, a flow meter 303, a pressure sensor 302, and an electric fine-tuning valve 403 are connected in series on the connecting branch between the first cooling water tank 202 and the second cooling water tank 204; a temperature sensor 301 and a flow meter 303 are connected in series between the first cooling water tank 202 and the air compressor controller 102, and an electric regulating valve 402 and a temperature sensor 301 are connected in series between the second cooling water tank 204 and the air compressor 101.

[0039] In this embodiment, the specific circulation process of the water circulation structure 21 is as follows:

[0040] The liquid in the second cooling water tank 204 is pumped out by the water pump 201 and enters the first branch 211 for circulation. The liquid in the first branch 211 is circulated and cooled by the first cooling water tank 202 and flows through the air compressor controller 102 and the air compressor 101 components for cooling and heat dissipation. The water after cooling and heat dissipation of the air compressor controller 102 and the air compressor 101 circulates back to the second cooling water tank through the second branch 212, forming a complete cooling and heat dissipation water body loop.

[0041] When the air compressor is working, it is sometimes necessary to heat and increase the pressure of the gas in the air compressor. Therefore, a heater 204 is set at the bottom of the second cooling water tank 204. The surface of the heater 204 is provided with a waterproof and high-temperature resistant outer cover. After the heater 203 heats the water in the second cooling water tank 204, the water pump 201 draws hot water to the second branch 212. The hot water in the second branch 212 flows through the air compressor 101 and heats the gas in the air compressor 101. The first cooling water tank 202 circulates and cools the water flowing out of the air compressor 101, and then flows back to the second cooling water tank 204 through the first branch 211, forming a complete water circulation process for heating the gas in the air compressor 101.

[0042] The measurement control mechanism 7 is composed of a console 71, various measurement sensors, a measurement box, an industrial computer and a data acquisition card, etc., which are used to complete the measurement of air compressor performance parameters, data processing and adjustment of test conditions. During the test, the test conditions can be adjusted through the manual operation buttons on the console. The data results are stored in an Excel file, and the special data processing software can automatically generate an air compressor MAP diagram and a test report.

[0043] A water circulation controller is also provided on the control console 71 to control the alternating circulation of the cold and hot water bodies in the first branch 211 and the second branch 212 of the water circulation structure 21 .

[0044] In addition to the above mechanisms, the test bench of the measurement and control mechanism 7 in the specific embodiment of the present invention is also provided with a monitoring and safety protection module, which is closely connected with the test equipment with the air compressor module 1 as the core, and is mainly responsible for sound and light alarms for safety parameter over-limit faults that occur during the test process, and taking corresponding safety protection measures. The monitoring alarm parameters include air compressor speed overspeed, cooling water inlet temperature overtemperature alarm, cooling water inlet temperature low temperature alarm, etc. An emergency stop button is provided on the console on the test bench, and the power supply of the driving DC motor can be immediately cut off through the emergency stop button in the event of a fault, and the machine can be shut down for maintenance.

[0045] The basic working principle of the test platform composed of the above institutions is as follows:

[0046] Start the test platform, and first conduct a running-in experiment on the air compressor to ensure that the contact surface between the piston and the cylinder body, the contact surface between the connecting rod bearing and the connecting rod shaft diameter, and the contact surface between the piston pin and the connecting rod pin sleeve in the air compressor are in good contact. After the running-in experiment is completed, the air compressor is subjected to a performance test. The main test items are: compression ratio test, exhaust volume test, leakage test, overload test, surge test, temperature rise test, and mainly complete the measurement of the air compressor's inlet volume flow, pressure ratio, shaft power, efficiency, surge limit, inlet and outlet temperature, ambient temperature during the experiment, and atmospheric pressure. The specific process is as follows:

[0047] The air compressor 101 compresses and processes the purified air delivered by the gas delivery mechanism 5 under the drive of the motor drive mechanism 6 (the DC power supply power is maintained at 20 kilowatts per hour, and the voltage is adjustable within 0 to 450 volts). When the air compressor is working in a cycle, various sensors, measuring boxes and other devices in the measurement and control mechanism 7 test the various performance parameter items of the running air compressor. The test function is comprehensive and the measurement accuracy is high. The measurement data is collected and recorded one by one by devices such as data acquisition cards. When the air compressor is running, the air compressor controller 102 controls the working speed of the air compressor 101, the cooling mechanism 2 is used to adjust the temperature of the motor in the motor drive mechanism 6 and the cooling water in the air compressor controller 102, and the pneumatic adjustment mechanism 4 connected to one end of the air compressor 101 is used to adjust the inlet and outlet gas flow of the air compressor 101. After the test is completed, the collected data will be analyzed and processed by the special data processing software in the measurement and control mechanism 7 to generate an air compressor test report, and the data visualization degree is high. When the test platform is working, the monitoring and safety protection module monitors and alarms the working process parameters of the equipment with the air compressor module 1 as the core in real time and takes protective measures in time to protect the detection equipment safely and reliably.

[0048] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A fuel cell air compressor test platform, characterized in that: The air compressor module (1) comprises an air compressor module (1), a gas delivery mechanism (5), a motor drive mechanism (6), a pneumatic adjustment mechanism (4), a cooling mechanism (2), a measuring mechanism (3) and a measuring control mechanism (7), wherein the air compressor module (1) comprises an air compressor (101) and an air compressor controller (102) connected to the air compressor (101); The gas delivery mechanism (5) is connected to a port on one side of the air compressor (101); the motor drive mechanism (6) that provides driving force for the air compressor module (1) is connected to a port on one side of the air compressor controller (102); and the other port of the air compressor controller (102) is connected to the cooling mechanism (2); the air compressor (101) is driven by the motor drive mechanism (6) to compress and process the air delivered by the gas delivery mechanism (5), and the operating speed is controlled by the air compressor controller (102); the cooling mechanism (2) is used to control and adjust the temperature of the motor in the motor drive mechanism (6) and the air compressor controller (102); the pneumatic adjustment mechanism (4) connected to one end of the air compressor (101) is used to adjust the inlet and outlet gas flow of the air compressor (101); and the measurement control mechanism (7) is electrically connected to the air compressor module (1) and performs performance testing on the air compressor (101) in a working state; The cooling mechanism (2) comprises a first cooling water tank (202) and a second cooling water tank (204) connected at both sides by pipelines, the first cooling water tank (202) being connected to the air compressor controller (102) by pipelines, the second cooling water tank (204) being connected to the air compressor (101) by pipelines, a heater (203) being provided on the second cooling water tank (204), and a water pump (201) being provided on the connecting pipeline between the first cooling water tank (202) and the second cooling water tank (204); The motor drive mechanism (6) comprises a power distribution cabinet (602) and an inverter (601) connected to the power distribution cabinet (602), and the inverter (601) is connected to the air compressor controller (102); The pneumatic regulating mechanism (4) comprises a pneumatic pipeline (401) and an electric regulating valve (402) and an electric fine-tuning valve (403) installed in parallel on the pneumatic pipeline (401); one end of the pneumatic pipeline (401) is connected to the air compressor (101); and the measuring mechanism (3) is adaptively installed on the pneumatic pipeline (401); The gas delivery mechanism (5) comprises an air filter (501), the air filter (501) is connected to the air compressor (101) via an air pipeline (502), and the measuring mechanism (3) is adaptively mounted on the air pipeline (502); The measuring mechanism (3) comprises a pressure sensor (302), a temperature sensor (301), and a flow meter (303); The first cooling water tank (202) and the second cooling water tank (204) share a water circulation structure (21), the water circulation structure (21) comprising a first branch (211) for the first cooling water tank (202) to circulate cold water to dissipate heat for the air compressor controller (102) and the motor and controller in the air compressor (101), and a second branch (212) for heating the gas in the air compressor (101), the electric regulating valve (402), the electric fine-tuning valve (403) and the measuring mechanism (3) being adaptively installed on the first branch (211) and the second branch (212) to adjust the liquid flow and temperature in the water circulation structure (21); The liquid in the second cooling water tank (204) is pumped out by the water pump (201) and enters the first branch (211) for circulation; the liquid in the first branch (211) is circulated and cooled by the first cooling water tank (202), then flows through the air compressor controller (102) and the air compressor (101) for cooling and heat dissipation; the water body after cooling and heat dissipating the air compressor controller (102) and the air compressor (101) flows back to the second cooling water tank through the second branch (212); the water body in the second cooling water tank (204) heated by the heater (203) heats the gas in the air compressor (101) through the second branch (212); the water body after flowing through the air compressor (101) flows into the first cooling water tank (202), circulates and cools, then flows back to the second cooling water tank (204) through the first branch (211); A branch formed by connecting the flow meter (303) and the electric fine-tuning valve (403) in series is connected in parallel with another branch formed by connecting the flow meter (303) and the electric fine-tuning valve (402), and connected to the pneumatic pipeline (401). The pressure sensor (302) and the temperature sensor (301) are connected in series to the main trunk of the pneumatic pipeline (401) to adjust the inlet and outlet air flow of the air compressor (101).

2. A fuel cell air compressor test platform according to claim 1, characterized in that: The measurement control mechanism (7) is electrically connected to a mechanism device with the air compressor module (1) as a core, and the measurement control mechanism (7) comprises a control console (71) on which are arranged measurement sensors, a measurement box, an industrial computer and a data acquisition card, for completing the measurement of air compressor performance parameters, data processing and adjustment of test conditions.

3. A fuel cell air compressor test platform according to claim 2, characterized in that: A water circulation controller is also provided on the control console (71) to control the alternating circulation of cold and hot water in the first branch (211) and the second branch (212) of the water circulation structure (21).

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