Automatic temperature and pressure cycle test bed for high-pressure hydrogen storage combination valve

Abstract

The utility model belongs to the technical field of high-pressure hydrogen storage, and particularly relates to an automatic temperature and pressure cycle test bed for a high-pressure hydrogen storage combination valve. 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 utility model relates to the technical field of high-pressure hydrogen storage, in particular to an automatic temperature and pressure cycle test bench 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 a single function, and has deficiencies in simulating the 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. Utility Model Content

[0003] The purpose of the present utility model is to provide an automatic temperature and pressure cycle test bench and test method for high-pressure hydrogen storage combination valves, so as to solve the problem proposed in the above background technology that the existing valve testing equipment often tests valves with a single function, has deficiencies in simulating the extreme temperature and pressure conditions of the combination valves 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 objectives, the present invention provides the following technical solutions: 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 provided inside the environmental box, and the central controller is installed on the outer wall of the environmental box;

[0007] The gas circulation system includes an air compressor, the air outlet of the air compressor is connected to the inlet of the 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 the OTV 1 is connected to the interface of one side of multi-way valve 1, the multi-way valve 1 is connected to 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 the OTV 2 is connected to multi-way valve 2, the multi-way valve 2 is connected to pressure sensor 2, the OTV 2, the multi-way valve 2, and the pressure sensor 2 are located in an environmental chamber, 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 the driving gas and the discharge stop valve 2;

[0008] The central controller is electrically connected to the driving gas and the second discharge stop valve, OTV 1, OTV 2, pressure sensor 1, and pressure sensor 2.

[0009] Preferably, the environmental box includes 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 the telescopic end of the electric telescopic rod is connected to a baffle, and the baffle corresponds to the position of the ventilation slot and matches the size.

[0012] Preferably, a driving gas and discharge stop valve 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.

[0013] A test method for an automatic temperature and pressure cycle test bench for a high-pressure hydrogen storage combination valve is provided. The specific steps of the test 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. The automatic control system is activated, and the air compressor begins to provide driving gas to the booster. The booster increases the pressure of the gas source (hydrogen) to the high pressure range required for the test. At the same time, the environmental chamber 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 devices based on real-time temperature and pressure data, achieving automatic temperature and pressure cycle testing. Simultaneously, the data acquisition and analysis system collects, processes, and analyzes test data in real time.

[0018] S5. After the test is completed, 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 beneficial effects of the present invention are:

[0020] This test bench is designed to automatically cycle temperature and pressure, simulating the extreme operating conditions of high-pressure hydrogen storage combination valves to comprehensively evaluate their durability and reliability. The bench is widely applicable for testing automotive cylinder 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 This is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the outer box of the utility model;

[0023] Figure 3 This is a schematic diagram of the utility model.

[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 air and discharge shut-off valve 2; 18. OTV 1; 19. Booster equipment; 20. Drive air and discharge shut-off 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0027] Example 1:

[0028] See also Figure 1-3The utility model 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 environmental box is provided with a temperature control component inside, and the central controller 3 is installed on the outer wall of the environmental box; the environmental 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. 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 provided in the middle of the lower surface of the inner cavity of the outer box body 1, the cooling fan 5 is symmetrically provided 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. 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, and 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. 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 provided between the air outlet of the air compressor 21 and the air inlet of the boosting device 19. 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 the 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, and adjusting the gas pressure and environmental chamber temperature according to preset parameters.

[0039] Pressure sensor 14, pressure sensor 211: high-precision pressure sensors, real-time monitoring of gas pressure to ensure precise control.

[0040] OTV-18: Gas source shut-off valve, which realizes the opening, closing and stopping functions of 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 discharge stop valve 1 20, driving gas and discharge stop valve 2 17: driving gas and discharge 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 adjusts the gas flow to ensure stable discharge pressure.

[0045] Multi-way valve (multi-way valve 13, multi-way valve 2 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 opening and closing door 2 are made of high-strength, corrosion-resistant materials. Inside the outer chamber 1, an electric heater 4, cooling fan 5, and temperature sensor 6 are installed to simulate the temperature conditions of the valve's actual operating environment. Under the control of the central controller 3 (HCU), the environmental chamber can automatically heat up, cool down, and maintain temperature.

[0047] Gas circulation system: As the hardware component of the test bench, the gas circulation system includes an air compressor 21, a booster device 19, and gas piping. The gas piping connects the environmental chamber, booster device 19, and the valve under test, forming a closed gas circulation loop. Under the control of the central controller 3 (HCU), the entire system can control the pressure of the combined valves within the environmental chamber, achieving automated pressure cycling.

[0048] The main function of the air compressor 21 is to compress air so that it can be input into the booster device 19 as driving gas. The booster device 19 is internally 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), driving gas and exhaust shut-off valve (driving gas and exhaust shut-off valve 120, driving gas and exhaust 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 precise control and subsequent data collection; OTV 18 adjusts according to the instructions of the central controller (HCU) to realize the opening and closing functions of the test gas source according to the instructions of the HCU.

[0049] The valve combination under test is connected to the OTV valve (12) via a specific adapter. The pressure reducing valve (15) reduces the high-pressure gas to a safe discharge range. The actuating gas and discharge shutoff valve (20) and the actuating gas and discharge shutoff valve (17) control the test bench's operation and emissions according to the HCU's instructions. The entire system precisely controls the pressure of the valve combination within the environmental chamber, achieving automated pressure cycling and simulating the extreme operating conditions of a 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 control unit (HCU) is the software component of the entire system. It includes the HCU, program, and host computer software, connected to the various hardware components via wiring harnesses. It is responsible for monitoring and controlling the entire test bench. Based on preset test parameters, the HCU automatically adjusts temperature and pressure to automate the testing process. Furthermore, the system features fault warning and emergency shutdown functions to ensure the safety and reliability of the testing process.

[0052] A test method for an automatic temperature and pressure cycle test bench for a high-pressure hydrogen storage combination valve is provided. The specific steps of the test 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. The automatic control system is activated, and the air compressor begins to provide driving gas to the booster. The booster increases the pressure of the gas source (hydrogen) to the high pressure range required for the test. At the same time, the environmental chamber 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 devices based on real-time temperature and pressure data, achieving automatic temperature and pressure cycle testing. Simultaneously, the data acquisition and analysis system collects, processes, and analyzes test data in real time.

[0057] S5. After the test is completed, 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 testing.

[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 settings 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 high-pressure hydrogen storage combination valves in actual operation. 3. Start the test and save the data

[0073] 1. Set the environmental chamber temperature and wait for it to stabilize:

[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 until the temperature stabilizes to the preset value before proceeding to the next step.

[0076] 4. Start working condition test:

[0077] Click the Start Condition button in the test software, and the HCU will control the environmental chamber to the preset temperature. When the temperature reaches the desired value, the HCU will open the drive air and exhaust shutoff valve 20 and OTV 18. The air compressor will then start supplying drive air to the booster to begin pressurizing the air source. When the pressure indicated by pressure sensor 14 reaches the set parameters, the HCU will close the drive air and exhaust shutoff valve 20 to stop the booster 19. When the pressure on pressure sensor 14 stabilizes, the HCU will open OTV 12 and read the value on pressure sensor 11. If the value meets the set requirements, the HCU will close OTV 18 and open the drive air and exhaust shutoff valve 17 to evacuate the air from the test pipeline. This constitutes one automatic test cycle. The HCU will complete the automatic temperature and pressure cycling 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 appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0086] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and 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 provided inside the environmental box, and the central controller (3) is installed on the outer wall of the environmental box; 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 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 the 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 the driving gas and the discharge stop valve 2 (17). The central controller (3) is electrically connected to the driving gas and discharge stop valve 2 (17), OTV 1 (18), OTV 2 (12), pressure sensor 1 (14), and pressure sensor 2 (11).

2. The automatic temperature and pressure cycle test bench for high-pressure hydrogen storage combination valves according to claim 1 is characterized by: The environmental chamber comprises a hollow outer box body (1) with an opening at the front, an opening and closing door (2) being 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.

3. The automatic temperature and pressure cycle test bench for high-pressure hydrogen storage combination valves 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 provided in the middle of the lower surface of the inner cavity of the outer box (1); the cooling fan (5) is symmetrically provided 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 valves 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 (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 shut-off 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 shut-off valve (20).

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