High-pressure hydrogen storage combination valve automatic temperature and pressure cycle test bench and test method

Abstract

The invention belongs to the technical field of high-pressure hydrogen storage, and particularly relates to a high-pressure hydrogen storage combination valve automatic temperature and pressure cycle test bed and a test method. Comprising an environment box, a gas circulation system and a central controller. The test method of the automatic temperature and pressure circulation test bench for the high-pressure hydrogen storage combination valve includes the following specific steps that S1, a tested valve is installed in a gas pipeline of the high-pressure gas circulation system, and related wire harnesses and sensors are connected; s2, setting test parameters according to test requirements in the automatic control system, wherein the test parameters comprise a temperature range, a pressure range, a cycle index and dwell time; the test bench aims at automatically carrying out temperature and pressure circulation and simulating the operation environment of the high-pressure hydrogen storage combination valve under extreme working conditions so as to comprehensively evaluate the durability and reliability of the combination valve. The rack is widely applicable to testing of vehicle cylinder valves and performance testing of other pipeline valves in a hydrogen energy system and related valves of a hydrogen refueling station.

Description

Technical Field

[0001] The invention relates to the technical field of high-pressure hydrogen storage, and in particular to an automatic temperature and pressure cycle test bench and a test method for a high-pressure hydrogen storage combination valve. Background Art

[0002] With the rapid development of hydrogen energy technology, high-pressure hydrogen storage combination valves are key components in hydrogen energy systems. Their reliability, sealing, and durability are crucial to ensuring the safe and efficient operation of hydrogen energy systems. Therefore, it is particularly important to test the temperature and pressure cycle of high-pressure hydrogen storage combination valves. However, existing valve testing equipment often tests valves with single functions, and has deficiencies in simulating extreme temperature and pressure conditions of combination valves and data acquisition and analysis. In addition, the degree of automation is not high, making it difficult to meet test requirements. Therefore, the development of a high-pressure hydrogen storage combination valve test bench and its testing method that can automatically perform temperature and pressure cycle tests and has a wide range of applications is of great significance to promoting the development of hydrogen energy technology. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic temperature and pressure cycle test bench and test method for a high-pressure hydrogen storage combination valve, so as to solve the problem that the existing valve testing equipment mentioned in the above background technology often tests valves with a single function, has deficiencies in simulating the extreme temperature and pressure conditions of the combination valve and data acquisition and analysis, and has a low degree of automation, making it difficult to meet the test requirements.

[0004] To achieve the above object, the present invention provides the following technical solution: a high-pressure hydrogen storage combination valve automatic temperature and pressure cycle test bench, comprising:

[0005] Environmental chamber, gas circulation system, central controller;

[0006] Wherein, a temperature control component is arranged inside the environmental box, and the central controller is installed on the outer wall of the environmental box;

[0007] The gas circulation system comprises an air compressor, the air outlet of the air compressor is connected to the inlet of a boosting device, the inlet of the boosting device is also separately connected to a pipeline, the outlet of the boosting device is connected to OTV 1, the other end of OTV 1 is connected to an interface on one side of a multi-way valve 1, the multi-way valve 1 is connected to a pressure sensor 1, the interface of the multi-way valve 1 is also connected to a pressure reducing valve and OTV 2, the other side of OTV 2 is connected to multi-way valve 2, the multi-way valve 2 is connected to a pressure sensor 2, the OTV 2, the multi-way valve 2 and the pressure sensor 2 are located in an environmental box, the other side of the pressure reducing valve is connected to a throttle valve, and the other end of the throttle valve is connected to a driving gas and a discharge stop valve 2;

[0008] The central controller is electrically connected to the driving gas and the second discharge stop valve, OTV one, OTV two, pressure sensor one, and pressure sensor two.

[0009] Preferably, the environmental box comprises a hollow outer box body with an opening at the front, an opening and closing door is provided at the front opening of the outer box body, and the outer box body and the opening and closing door are both made of stainless steel or aluminum alloy.

[0010] Preferably, the temperature control component includes an electric heater, a cooling fan, a temperature sensor and a ventilation slot opened at the top of the outer box body. The electric heater is arranged in the middle of the lower surface of the inner cavity of the outer box body, the cooling fan is symmetrically arranged on both sides of the lower surface of the inner cavity of the outer box body, and the temperature sensor is installed on the side wall of the inner cavity of the outer box body.

[0011] Preferably, an electric telescopic rod is installed on the upper side of the inner cavity of the outer box body, and a baffle is connected to the telescopic end of the electric telescopic rod. The baffle corresponds to the position of the ventilation slot and has a matching size.

[0012] Preferably, a driving gas and discharge stop valve 1 is provided between the air outlet of the air compressor and the air inlet of the boosting device, and the central controller is electrically connected to the driving gas and discharge stop valve 1.

[0013] A testing method for an automatic temperature and pressure cycle test bench for a high-pressure hydrogen storage combination valve. The specific steps of the testing method for the automatic temperature and pressure cycle test bench for a high-pressure hydrogen storage combination valve are as follows:

[0014] S1. Install the valve to be tested in the gas pipeline of the high-pressure gas circulation system and connect the relevant wiring harness and sensor;

[0015] S2. Set the test parameters in the automatic control system according to the test requirements, including temperature range, pressure range, number of cycles, and pressure holding time;

[0016] S3. Start the automatic control system, the air compressor starts to provide driving gas to the booster device, the booster device increases the pressure of the gas source (the medium is hydrogen) to the high pressure range required for the test, and at the same time, the environmental box is heated or cooled according to the preset temperature parameters;

[0017] S4. During the test, the automatic control system controls the operation of the air compressor, booster equipment, and heating / cooling equipment according to the real-time monitored temperature and pressure data to achieve automatic cycle testing of temperature and pressure. At the same time, the data acquisition and analysis system collects test data in real time and processes and analyzes it;

[0018] S5. After the test, the automatic control system stops running, and the data acquisition and analysis system generates a test report. The operator can evaluate the performance of the tested valve based on the test report.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The test bench is designed to automatically perform temperature and pressure cycles to simulate the operating environment of high-pressure hydrogen storage combination valves under extreme conditions to comprehensively evaluate the durability and reliability of the combination valves. The test bench is widely used in the testing of automotive bottle valves, other pipeline valves in hydrogen energy systems, and performance testing of valves related to hydrogen refueling stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the outer box of the present invention;

[0023] Figure 3 It is a schematic diagram of the present invention.

[0024] In the figure: 1. outer box; 2. opening and closing door; 3. central controller; 4. electric heater; 5. cooling fan; 6. temperature sensor; 7. ventilation slot; 8. electric telescopic rod; 9. baffle; 10. multi-way valve 2; 11. pressure sensor 2; 12. OTV 2; 13. multi-way valve 1; 14. pressure sensor 1; 15. pressure reducing valve; 16. throttle valve; 17. drive gas and discharge stop valve 2; 18. OTV 1; 19. booster equipment; 20. drive gas and discharge stop valve 1; 21. air compressor. DETAILED DESCRIPTION

[0025] 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.

[0026] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the 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.

[0027] Embodiment 1:

[0028] See also Figure 1-3The present invention provides a technical solution: an automatic temperature and pressure cycle test bench for high-pressure hydrogen storage combination valves, comprising:

[0029] Environmental chamber, gas circulation system, central controller 3;

[0030] The environment box is provided with a temperature control component inside, and the central controller 3 is installed on the outer wall of the environment box; the environment box includes a hollow outer box body 1 with an opening at the front, and an opening and closing door 2 is provided at the front opening of the outer box body 1, and the outer box body 1 and the opening and closing door 2 are both made of stainless steel or aluminum alloy. The temperature control component includes an electric heater 4, a cooling fan 5, a temperature sensor 6 and a ventilation slot 7 opened at the top of the outer box body 1, the electric heater 4 is arranged in the middle of the lower surface of the inner cavity of the outer box body 1, the cooling fan 5 is symmetrically arranged on both sides of the lower surface of the inner cavity of the outer box body 1, and the temperature sensor 6 is installed on the side wall of the inner cavity of the outer box body 1. An electric telescopic rod 8 is installed on the upper side of the inner cavity of the outer box body 1, and the telescopic end of the electric telescopic rod 8 is connected to a baffle 9, and the baffle 9 corresponds to the position of the ventilation slot 7 and the size matches.

[0031] The gas circulation system includes an air compressor 21, the air outlet of the air compressor 21 is connected to the inlet of the boosting device 19, the inlet of the boosting device 19 is also connected to a separate pipeline, the outlet of the boosting device 19 is connected to OTV-18, the other end of the OTV-18 is connected to the interface of one side of the multi-way valve-13, the multi-way valve-13 is connected to a pressure sensor-14, the interface of the multi-way valve-13 is also connected to the pressure reducing valve 15 and OTV-12, the other side of the OTV-12 is connected to the multi-way valve-13. The multi-way valve 10 is connected to a pressure sensor 11, the OTV 12, the multi-way valve 10 and the pressure sensor 11 are located in the environmental chamber, the other side of the pressure reducing valve 15 is connected to the throttle valve 16, and the other end of the throttle valve 16 is connected to the driving gas and discharge stop valve 17; a driving gas and discharge stop valve 20 is arranged between the air outlet of the air compressor 21 and the air inlet of the boosting device 19, and the central controller 3 is electrically connected to the driving gas and discharge stop valve 20.

[0032] The central controller 3 is electrically connected to the driving gas and exhaust stop valve 2 17 , OTV 1 18 , OTV 2 12 , pressure sensor 1 14 , and pressure sensor 2 11 .

[0033] Analysis of the above content:

[0034] In this plan:

[0035] Gas source: Provide a stable gas supply.

[0036] Air compressor 21: compresses air to make it the driving air for the booster equipment.

[0037] Booster equipment 19: Under the action of driving gas, the gas source is compressed to meet the pressure conditions required for the test.

[0038] Central controller 3 (HCU): responsible for monitoring and controlling the entire system, adjusting the gas pressure and environmental chamber temperature according to preset parameters.

[0039] Pressure sensor 11: High-precision pressure sensor, real-time monitoring of gas pressure to ensure precise control.

[0040] OTV-18: Gas source shut-off valve, which can start, close and stop the test gas source according to the instructions of HCU.

[0041] OTV-12: The valve under test is installed in the environmental chamber.

[0042] Driving gas and exhaust stop valve one 20, driving gas and exhaust stop valve two 17: driving gas and exhaust stop valve, used to control the flow of gas.

[0043] Pressure reducing valve 15: used to reduce the pressure of high-pressure gas to a safe discharge pressure range.

[0044] Throttle valve 16: further adjust the gas flow to ensure stable discharge pressure.

[0045] Multi-way valve (multi-way valve one 13, multi-way valve two 10): responsible for changing the gas flow direction, carrying sensors, etc., to improve the flexibility of the pipeline.

[0046] Environmental chamber: The outer chamber 1 and the opening and closing door 2 are made of high-strength, corrosion-resistant materials. The outer chamber 1 is equipped with an electric heater 4, a cooling fan 5, and a temperature sensor 6 to simulate the temperature conditions of the actual working environment of the valve. Under the control of the central controller 3 (HCU), the environmental chamber can realize automatic heating, cooling, and heat preservation operations.

[0047] Gas circulation system: As the hardware part of the experimental bench, the gas circulation system includes an air compressor 21, a booster device 19 and a gas pipeline. The gas pipeline is used to connect the environmental chamber, the booster device 19 and the valve to be tested to form a closed gas circulation loop. The entire system can control the pressure of the combined valve in the environmental chamber under the control of the central controller 3 (HCU) to achieve automatic pressure cycle changes.

[0048] The main function of the air compressor 21 is to compress the air so that it can be input into the booster device 19 as the driving gas. The booster device 19 is designed with a large-area air piston and a small-area gas plunger. When the low-pressure driving gas (compressed air) acts on the large-area air piston, due to the area difference, a higher pressure will be generated on the small-area gas plunger to meet the pressure conditions required for the test; the pipeline is equipped with high-precision pressure sensors (pressure sensor 14, pressure sensor 2 11), test gas source medium shut-off valve (OTV 18), drive gas and discharge shut-off valve (drive gas and discharge shut-off valve 120, drive gas and discharge shut-off valve 2 17), pressure reducing valve 15, throttle valve 16 and other components. Pressure sensor 14 and pressure sensor 2 11 monitor the gas pressure in real time to ensure accurate regulation and subsequent data collection; OTV 18 adjusts according to the instructions of the central controller (HCU) and realizes the opening and closing functions of the test gas source according to the instructions of the HCU.

[0049] The tested combination valve is connected to the OTV 2 valve 12 through a specific adapter. The pressure reducing valve 15 reduces the high-pressure gas to a safe discharge range. The driving gas and discharge stop valve 1 20 and the driving gas and discharge stop valve 2 17 realize the control function of the operation and discharge of the test bench according to the instructions of the HCU. The entire system can accurately control the pressure of the combination valve in the environmental chamber, realize automatic pressure cycle changes, and simulate the extreme working conditions of the high-pressure hydrogen storage system.

[0050] Data acquisition and analysis system: It can collect and output key parameters such as temperature and pressure in real time, and automatically generate temperature and pressure curves to comprehensively evaluate the performance of the combination valve, including key indicators such as sealing and durability.

[0051] Automation control system: The central controller (HCU) is the software part of the entire system. It includes the HCU, program and host computer software, which connects the hardware parts through wiring harnesses and is responsible for monitoring and controlling the entire test bench. According to the preset test parameters, the HCU automatically adjusts the temperature and pressure to realize the automated test process. At the same time, the system has fault warning and emergency shutdown functions to ensure the safety and reliability of the test process.

[0052] A testing method for an automatic temperature and pressure cycle test bench for a high-pressure hydrogen storage combination valve. The specific steps of the testing method for the automatic temperature and pressure cycle test bench for a high-pressure hydrogen storage combination valve are as follows:

[0053] S1. Install the valve to be tested in the gas pipeline of the high-pressure gas circulation system and connect the relevant wiring harness and sensor;

[0054] S2. Set the test parameters in the automatic control system according to the test requirements, including temperature range, pressure range, number of cycles, and pressure holding time;

[0055] S3. Start the automatic control system, the air compressor starts to provide driving gas to the booster device, the booster device increases the pressure of the gas source (the medium is hydrogen) to the high pressure range required for the test, and at the same time, the environmental box is heated or cooled according to the preset temperature parameters;

[0056] S4. During the test, the automatic control system controls the operation of the air compressor, booster equipment, and heating / cooling equipment according to the real-time monitored temperature and pressure data to achieve automatic cycle testing of temperature and pressure. At the same time, the data acquisition and analysis system collects test data in real time and processes and analyzes it;

[0057] S5. After the test, the automatic control system stops running, and the data acquisition and analysis system generates a test report. The operator can evaluate the performance of the tested valve based on the test report.

[0058] 1. Test bench preparation

[0059] 1. Connect samples, pipes and wiring harnesses:

[0060] Refer to the test schematic diagram to clarify the connection method and location of the sample (high-pressure hydrogen storage combination valve), pipelines and related wiring harnesses.

[0061] 2. Use special connectors to connect the sample to the pipeline in the high-pressure gas circulation system to ensure that the connection is tight and leak-free.

[0062] Connect the relevant wiring harnesses (such as sensor wiring harness, control wiring harness, etc.) to the corresponding interfaces correctly according to the schematic diagram.

[0063] 3. Connect the gas source and power supply to ensure that the gas supply is sufficient and stable, and that the test bench has stable power support.

[0064] 4. Open the test software:

[0065] After completing the connection of samples, pipes and wiring harnesses, start the test software and prepare for subsequent settings and tests.

[0066] 2. Set test parameters

[0067] 1. Set temperature parameters:

[0068] Find the setting interface in the test software and set the target temperature of the environmental chamber according to the test requirements.

[0069] The temperature parameters are set taking into account the temperature range of the high pressure hydrogen storage combination valve in the actual working environment.

[0070] 2. Set pressure parameters:

[0071] Also in the setting interface, set the target pressure of the high-pressure gas circulation system according to the test requirements.

[0072] The setting of pressure parameters takes into account the pressure changes of the high-pressure hydrogen storage combination valve in actual operation. 3. Start the test and save the data

[0073] 1. Set the environmental chamber temperature and wait for stabilization:

[0074] 2. Find the environmental chamber temperature setting option in the test software, enter the target temperature and start the heating or cooling device.

[0075] 3. Wait for the temperature to stabilize to the preset value before proceeding to the next step.

[0076] 4. Start the working condition test:

[0077] Click the working condition start button in the test software, and the HCU will control the environmental box to start temperature control according to the preset temperature. When the temperature reaches the required value, the HCU will open the drive gas and discharge stop valve 20 and OTV 18. At this time, the air compressor will start and supply drive air to the booster to start pressurizing the air source. When the pressure sensor 14 shows that the pressure reaches the set parameter, the HCU will close the drive gas and discharge stop valve 20 to stop the booster 19. When the pressure of the pressure sensor 14 is stable, the HCU will open OTV 12 and read the value of the pressure sensor 11. If the value meets the set requirements, the HCU will close OTV 18 and open the drive gas and discharge stop valve 17 to exhaust the gas in the test pipeline. The above is an automatic test cycle. The HCU will complete the automatic temperature and pressure cycle test according to the set number of tests.

[0078] During the test, the HCU will collect key parameters such as temperature and pressure in real time and display them on the interface for operators to monitor.

[0079] 5. Ensure data preservation:

[0080] Before starting the test, make sure the data save switch is green and on.

[0081] In this way, all data collected during the test will be automatically saved to the background database for subsequent analysis and processing.

[0082] 6. Observe the test results:

[0083] After the test is completed, the test software will automatically stop the working condition and display the test results.

[0084] Operators can view test data and evaluate the performance of the high-pressure hydrogen storage combination valve.

[0085] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0086] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure hydrogen storage combination valve automatic temperature and pressure cycle test bench, characterized in that: include: Environmental chamber, gas circulation system, central controller (3); Wherein, a temperature control component is arranged inside the environmental box, and the central controller (3) is installed on the outer wall of the environmental box; The gas circulation system comprises an air compressor (21), the air outlet of the air compressor (21) is connected to the inlet of a boosting device (19), the inlet of the boosting device (19) is also separately connected to a pipeline, the outlet of the boosting device (19) is connected to an OTV (18), the other end of the OTV (18) is connected to a side interface of a multi-way valve (13), the multi-way valve (13) is connected to a pressure sensor (14), the interface of the multi-way valve (13) is connected to a pressure sensor (14), and the pressure sensor (14) is connected to the pressure sensor (14). The port is also connected to a pressure reducing valve (15) and OTV 2 (12); the other side of the OTV 2 (12) is connected to a multi-way valve 2 (10); the multi-way valve 2 (10) is connected to a pressure sensor 2 (11); the OTV 2 (12), the multi-way valve 2 (10) and the pressure sensor 2 (11) are located in the environmental chamber; the other side of the pressure reducing valve (15) is connected to a throttle valve (16); the other end of the throttle valve (16) is connected to a driving gas and a discharge stop valve 2 (17); The central controller (3) is electrically connected to the drive gas and discharge stop valve 2 (17), OTV 1 (18), OTV 2 (12), pressure sensor 1 (14), and pressure sensor 2 (11).

2. According to claim 1, the automatic temperature and pressure cycle test bench for high-pressure hydrogen storage combination valves is characterized by: The environmental chamber comprises a hollow outer box body (1) with an opening at the front, an opening door (2) is arranged at the front opening of the outer box body (1), and the outer box body (1) and the opening door (2) are both made of stainless steel or aluminum alloy.

3. The automatic temperature and pressure cycle test bench for high-pressure hydrogen storage combination valve according to claim 2 is characterized by: The temperature control component comprises an electric heater (4), a cooling fan (5), a temperature sensor (6) and a ventilation slot (7) provided at the top of the outer box (1); the electric heater (4) is arranged in the middle of the lower surface of the inner cavity of the outer box (1); the cooling fan (5) is symmetrically arranged on both sides of the lower surface of the inner cavity of the outer box (1); and the temperature sensor (6) is installed on the side wall of the inner cavity of the outer box (1).

4. The automatic temperature and pressure cycle test bench for high-pressure hydrogen storage combination valve according to claim 3 is characterized by: An electric telescopic rod (8) is installed on the upper side of the inner cavity of the outer box body (1), and a baffle (9) is connected to the telescopic end of the electric telescopic rod (8). The baffle (9) corresponds to the position of the ventilation slot (7) and has a matching size.

5. The automatic temperature and pressure cycle test bench for high-pressure hydrogen storage combination valve according to claim 1 is characterized by: A driving gas and discharge stop valve (20) is provided between the air outlet of the air compressor (21) and the air inlet of the boosting device (19), and the central controller (3) is electrically connected to the driving gas and discharge stop valve (20).

6. A test method based on the automatic temperature and pressure cycle test bench for high-pressure hydrogen storage combination valves according to any one of claims 1 to 5, characterized in that: The specific steps of the test method of the high-pressure hydrogen storage combination valve automatic temperature and pressure cycle test bench are as follows: S1. Install the valve to be tested in the gas pipeline of the high-pressure gas circulation system and connect the relevant wiring harness and sensor; S2. Set the test parameters in the automatic control system according to the test requirements, including temperature range, pressure range, number of cycles, and pressure holding time; S3. Start the automatic control system, the air compressor starts to provide driving gas to the booster device, the booster device increases the gas source pressure to the high pressure range required for the test, and at the same time, the environmental chamber performs heating or cooling operations according to the preset temperature parameters; S4. During the test, the automatic control system controls the operation of the air compressor, booster equipment, and heating / cooling equipment according to the real-time monitored temperature and pressure data to achieve automatic cycle testing of temperature and pressure. At the same time, the data acquisition and analysis system collects test data in real time and processes and analyzes it; S5. After the test, the automatic control system stops running, and the data acquisition and analysis system generates a test report. The operator can evaluate the performance of the tested valve based on the test report.

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