A one-way valve, hydrogen storage bottle valve combination high pressure durability test bench

Abstract

The utility model discloses a one -way valve, hydrogen storage bottle valve combination high pressure durability test bench, including gas circulation system, environmental box, central controller, gas circulation system includes air intake equipment group, exhaust equipment group and gas pipeline, and the gas pipeline is connected air intake equipment group, the valve of environmental box in -measured, forms the closed gas circulation loop, and the gas pipeline also connects exhaust equipment group, is used for the gas emptying in gas circulation loop, and central controller is connected with air intake equipment group, environmental box, exhaust equipment group, and the environmental box includes the one -way valve of measured, measured hydrogen storage bottle valve, and the one -way valve of measured, measured hydrogen storage bottle valve constitutes a test bench together, the environmental box is equipped with the gas end, and air intake equipment group is connected with the gas end of environmental box, and sets up no. The exhaust equipment group is also connected with the gas end of environmental box, and the gas circuit connection is realized through setting no. The utility model can simulate the actual operation environment of high pressure one -way valve under extreme working condition, can cooperate hydrogen storage bottle valve and carry out durability test, not only can overall evaluation one -way valve's durability, but also can measure hydrogen storage bottle valve's durability, more ensure its reliability in practical application.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure hydrogen storage technology, specifically a high-pressure durability test bench combining a one-way valve and a hydrogen storage cylinder valve. Background Technology

[0002] In today's rapidly developing hydrogen energy technology, high-pressure hydrogen storage combination valves, as core components of hydrogen energy systems, play a decisive role in ensuring the safe and efficient operation of these systems through their reliability, sealing performance, and durability. Therefore, periodic temperature and pressure cycling tests on high-pressure hydrogen storage combination valves are crucial. However, traditional valve testing equipment is mostly single-function and has many shortcomings in simulating combination valves under extreme temperature and pressure environments, as well as in data acquisition and analysis. To fill this gap, a new test bench and testing method have been developed, possessing broad applicability and efficiently addressing the performance testing needs of vehicle cylinder valves, other pipeline valves within hydrogen energy systems, and valves related to hydrogen refueling stations. The development of this technology has profound significance for promoting the advancement of hydrogen energy technology. Summary of the Invention

[0003] The purpose of this invention is to provide a high-pressure durability test bench for a combination of a one-way valve and a hydrogen storage cylinder valve, in order to solve the problems mentioned in the background art.

[0004] The technical solution of this utility model is as follows: A high-pressure durability test bench for a combination of a one-way valve and a hydrogen storage cylinder valve, comprising a gas circulation system, an environmental chamber, and a central controller. The gas circulation system includes an inlet device group, an exhaust device group, and a gas pipeline. The gas pipeline connects the inlet device group and the valve under test in the environmental chamber to form a closed gas circulation loop. The gas pipeline is also connected to the exhaust device group for venting gas from the gas circulation loop. The central controller is connected to the inlet device group, the environmental chamber, and the exhaust device group. The environmental chamber includes the one-way valve under test and the hydrogen storage cylinder valve under test, which together form a test bench. The environmental chamber has a gas inlet end. The inlet device group is connected to the gas inlet end of the environmental chamber and is equipped with a No. 1 test gas shut-off valve. The exhaust device group is also connected to the gas inlet end of the environmental chamber. The gas path connection is achieved by setting up a No. 1 multi-port.

[0005] Preferably, the central controller is connected to the first test gas shut-off valve.

[0006] Preferably, the environmental chamber includes a first test check valve, a second test check valve, a second test gas shut-off valve, and a test hydrogen storage cylinder valve. The test hydrogen storage cylinder valve has a built-in electromagnetic switch and is connected to the environmental chamber as a third test gas shut-off valve. The front end of the first test check valve and the rear end of the second test check valve are respectively connected to the gas inlet of the environmental chamber. The rear end of the first test check valve is connected to the second test gas shut-off valve, and the front end of the second test check valve is connected to the third test gas shut-off valve. The second and third test gas shut-off valves are connected to form a circuit.

[0007] As a further preferred embodiment, a data acquisition system is also included, which includes a first pressure sensor and a second pressure sensor. A second multi-port is provided between the second test gas shut-off valve and the third test gas shut-off valve, and the second pressure sensor is connected thereto. A first multi-port is provided between the first test gas shut-off valve and the gas inlet of the environmental chamber, and the first pressure sensor is connected thereto. The central controller is connected to the first pressure sensor and the second pressure sensor respectively.

[0008] Preferably, the environmental chamber is further equipped with a heating element, a cooling device, and a temperature sensor, and the central controller is connected to the heating element, the cooling device, and the temperature sensor respectively.

[0009] Preferably, the air intake device group includes a booster device, an air source, and an air compressor. The air source and the air compressor are respectively connected to the booster device, and the air outlet of the booster device is connected to the No. 1 test gas shut-off valve.

[0010] As a further preferred option, the gas source is hydrogen.

[0011] As a further preferred embodiment, a drive air on / off shut-off valve is provided between the air compressor and the booster device, and the central controller is connected to the drive air on / off shut-off valve.

[0012] Preferably, the exhaust equipment group is equipped with a pressure reducing valve and a pipeline gas emission shut-off valve. The pressure reducing valve is connected to a multi-port valve, and the pipeline gas emission shut-off valve is located behind the pressure reducing valve. The central controller is connected to the pipeline gas emission shut-off valve.

[0013] Preferably, the exhaust equipment group further includes a throttle valve, which is located between the pressure reducing valve and the gas discharge shut-off valve in the pipeline.

[0014] Compared with the prior art, the beneficial effects of this utility model are: The unique feature of this invention is its high degree of automation, which enables it to perform cyclic testing of temperature and pressure, simulate the actual operating environment of a high-pressure check valve under extreme working conditions, and can be used in conjunction with a hydrogen storage cylinder valve for durability testing.

[0015] This invention uses a central processing unit for automatic control of the main components, which enables automatic cyclic testing of temperature and pressure, greatly improving testing efficiency and accuracy and reducing human error.

[0016] In this invention, the combined testing of the one-way valve and the cylinder valve not only allows for durability testing of the one-way valve, comprehensively evaluating its durability, but also enables simultaneous durability testing of the vehicle-mounted hydrogen storage cylinder valve, further ensuring its reliability in practical applications. This enhances the system's testing capabilities and reduces testing costs.

[0017] This invention employs a data acquisition and analysis system that can collect key parameters during the testing process in real time, facilitating subsequent data processing and analysis, and providing operators with accurate test data support.

[0018] This invention is not only applicable to the testing of vehicle cylinder valves, but also widely applicable to the performance testing of other pipeline valves in hydrogen energy systems and related valves in hydrogen refueling stations, demonstrating broad application prospects. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the connection principle of this utility model.

[0020] Label Explanation: 11: Air compressor; 12: Air source; 13: Boosting equipment; 14: Drive air on / off valve; 2: Central controller; 3: Environmental chamber; 31: Heating element; 32: Cooling device; 33: Temperature sensor; 41: Pressure reducing valve; 42: Throttling valve; 43: Gas venting shut-off valve in pipeline; 51: Test gas shut-off valve No. 1; 52: Test gas shut-off valve No. 2; 53: Test gas shut-off valve No. 3; 61: One number for multiple connections; 62: Two numbers for multiple connections; 71: Pressure sensor No. 1; 72: Pressure sensor No. 2; 81: Tested one-way valve No. 1; 82: Tested one-way valve No. 2. Detailed Implementation

[0021] A high-pressure durability test bench for a combination of a one-way valve and a hydrogen storage cylinder valve includes a gas circulation system, an environmental chamber 3, and a central controller 2. The gas circulation system comprises an inlet device group, an outlet device group, and gas pipelines. The gas pipelines connect the inlet device group and the valve under test in the environmental chamber 3, forming a closed gas circulation loop. The gas pipelines also connect to the outlet device group for venting gas from the circulation loop. Under the control of the central controller 2, the entire system can regulate the pressure of the combined valves within the environmental chamber 3, achieving automated pressure cyclic changes. The central controller 2 is responsible for monitoring and controlling the entire system, adjusting the gas pressure and temperature of the environmental chamber 3 according to preset parameters. The central controller 2 is connected to the air intake equipment group, the environmental chamber 3, and the exhaust equipment group. The environmental chamber 3 includes a test check valve and a test hydrogen storage cylinder valve, which together form a test bench. The environmental chamber 3 is provided with a gas inlet end, and the air intake equipment group is connected to the air inlet end of the environmental chamber 3. A test gas shut-off valve 51 is also provided. The exhaust equipment group is also connected to the air inlet end of the environmental chamber 3. The gas path is connected by a multi-port valve 61.

[0022] In this embodiment, the central controller 2 is connected to the first test gas shut-off valve 51.

[0023] Environmental Chamber 3: The chamber is made of high-strength, corrosion-resistant materials and is equipped with a heating element 31, a cooling device 32, and a temperature sensor 33 to simulate the temperature conditions of the valve's actual working environment. Under the control of the central controller 2, the environmental chamber 3 can automatically heat up, cool down, and maintain the temperature.

[0024] In this embodiment, the environmental chamber 3 includes a first test check valve 81, a second test check valve 82, a second test gas shut-off valve 52, and a test hydrogen storage cylinder valve. The test hydrogen storage cylinder valve has a built-in electromagnetic switch and serves as a third test gas shut-off valve 53 connected to the environmental chamber 3. The front end of the first test check valve 81 and the rear end of the second test check valve 82 are respectively connected to the gas inlet of the environmental chamber 3. The rear end of the first test check valve 81 is connected to the second test gas shut-off valve 52, and the front end of the second test check valve 82 is connected to the third test gas shut-off valve 53. The second and third test gas shut-off valves 52 and 53 are connected to form a circuit. The first and second test gas shut-off valves 51 and 52 are adjusted according to the instructions of the central controller 2, respectively realizing the opening and closing of the test gas source 12 and the function of cutting off the gas in the pipeline. The second test check valve 82 is connected to the second test gas shut-off valve 52 via a specific adapter. A test hydrogen storage cylinder valve is mounted at its rear end. The test hydrogen storage cylinder valve is opened and closed by the third test gas shut-off valve 53, which directs the high-pressure hydrogen in the cylinder valve to the second test check valve 82. Figure 1As shown, in the first test check valve 81, the test gas can only pass from left to right and cannot pass from right to left. Therefore, the left side of the first test check valve 81 is the front end, which is the inlet end, and the right side is the rear end, which is the outlet end. In the second test check valve 82, the test gas can only pass from right to left and cannot pass from left to right. Therefore, the right side of the second test check valve 82 is the front end, which is the inlet end, and the left side is the rear end, which is the outlet end.

[0025] This embodiment also includes a data acquisition system, which comprises a first pressure sensor 71 and a second pressure sensor 72. A second multi-port 62 is provided between the second test gas shut-off valve 52 and the third test gas shut-off valve 53, and the second pressure sensor 72 is connected thereto. A first multi-port 61 is also provided between the first test gas shut-off valve 51 and the gas inlet of the environmental chamber 3, and the first pressure sensor 71 is connected thereto. The central controller 2 is connected to both the first pressure sensor 71 and the second pressure sensor 72. High-precision pressure sensors (first pressure sensor 71 and second pressure sensor 72) are installed in the pipeline to monitor the gas pressure in real time, ensuring precise control and subsequent data acquisition.

[0026] In this embodiment, the environmental chamber 3 is also equipped with a heating element 31, a cooling device 32 and a temperature sensor 33, and the central controller 2 is connected to the heating element 31, the cooling device 32 and the temperature sensor 33 respectively. Figure 1 This is only a schematic diagram; the specific configuration of the heating element 31 and cooling device 32 can be adapted to the actual working requirements.

[0027] In this embodiment, the air intake device group includes a booster device 13, an air source 12, and an air compressor 11. The air source 12 and the air compressor 11 are respectively connected to the booster device 13, and the outlet of the booster device 13 is connected to the first test gas shut-off valve 51. The air source provides a stable supply of test gas; the main function of the air compressor 11 is to compress air, making it the driving gas input to the booster device 13; the booster device 13 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 booster device 13 is existing technology and is only briefly described here; under the action of the driving gas, the booster device 13 compresses the air source 12 to meet the pressure conditions required for the test.

[0028] In this embodiment, the gas source 12 is hydrogen.

[0029] In this embodiment, a drive gas on / off shut-off valve 14 is provided between the air compressor 11 and the booster device 13, and the central controller 2 is connected to the drive gas on / off shut-off valve 14.

[0030] In this embodiment, the exhaust equipment group is equipped with a pressure reducing valve 41 and a pipeline gas emission shut-off valve 43. The pressure reducing valve 41 is connected to a multi-port valve 61, and the pipeline gas emission shut-off valve 43 is located downstream of the pressure reducing valve 41. The central controller 2 is connected to the pipeline gas emission shut-off valve 43. The pressure reducing valve 41 reduces the pressure of the high-pressure gas in the pipeline to a safe emission range. The drive gas on / off shut-off valve 14 and the pipeline gas emission shut-off valve 43 control the operation and emission of the test bench according to the instructions of the central controller 2. The entire system can precisely control the pressure of the combined valves in the environmental chamber 3, realize automated pressure cyclic changes, and simulate the extreme working conditions of a high-pressure hydrogen storage system.

[0031] In this embodiment, the exhaust equipment group also includes a throttle valve 42, which is located between the pressure reducing valve 41 and the gas discharge shut-off valve 43 in the pipeline to further regulate the gas flow rate and ensure stable discharge pressure.

[0032] The working principle of this utility model: 1. 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.

[0033] 2. Test parameters, including temperature range, pressure range, number of cycles, and holding time, can be set in the automatic control system according to test requirements.

[0034] 3. The automatic control system is activated, the drive gas shut-off valve 14 opens, and the air compressor 11 begins to supply drive gas to the booster device 13. The booster device 13 increases the pressure of the gas source 12 (the medium is hydrogen) to the high pressure range required for the test. At the same time, the environmental chamber 3 operates to heat up or cool down according to the preset temperature parameters.

[0035] 4. Click the "Start Operating Condition" button in the testing software. The central controller 2 will control the ambient temperature of the control chamber 3 according to the preset temperature. Once the temperature reaches the required value, the central controller 2 will open the first test gas shut-off valve 51. After the gas source 12 stabilizes, the second test gas shut-off valve 52 will be opened. At this time, the air compressor 11 will supply driving air to the booster device 13, which will then boost the pressure of the gas source 12. The boosted gas will pass through the inlet of the first test check valve 81, through the second test gas shut-off valve 52, and into the third test gas shut-off valve 53, which is the tested hydrogen storage cylinder valve. At this time, the first test check valve 81 is in the open state, the third test gas shut-off valve 53 is in the closed state, and no gas can enter the rear end of the second test check valve 82, thus ensuring pressure resistance.

[0036] 5. When the pressure sensor 71 and pressure sensor 72 show that the pressure has reached the set parameters, the central controller 2 will close the drive gas on / off valve 14 to cut off the drive gas and stop pressurization; at this time, the pressure of the front and rear ends of the first tested check valve 81 and the valve of the third test gas shut-off valve 53 will reach the set parameters and maintain the pressure.

[0037] 6. The central controller 2 will close the second test gas shut-off valve 52 and open the gas discharge shut-off valve 43 in the pipeline to empty the gas in the test pipeline. The pressure display of the first pressure sensor 71 is 0 bar. The gas at the inlet of the first tested check valve 81 is emptied and the pressure is reduced to 0 bar. The first tested check valve 81 is in the closed state. The gas discharge shut-off valve 43 in the pipeline is closed. The first tested check valve 81 is pressure-resistant and durable. 7. Open the No. 2 test gas shut-off valve 52 and the No. 3 test gas shut-off valve 53. The gas in the back end of the No. 1 test check valve 81 and the test hydrogen storage cylinder valve will pass through the No. 3 test gas shut-off valve 53 and the No. 2 test check valve 82. At this time, open the gas discharge shut-off valve 43 in the pipeline again to empty the gas in the test pipeline. The above is one automatic test cycle. The central controller 2 will complete the automatic temperature and pressure cycle test according to the set number of tests.

[0038] During the test, the central controller 2 will collect key parameters such as temperature and pressure in real time and display them on the interface for operators to monitor.

[0039] After the test is completed, the testing software will automatically stop the operation and display the test results.

[0040] Operators can view test data and evaluate the performance of the high-pressure hydrogen storage combination valve.

[0041] During the test, according to different working conditions and temperature environments, three temperature conditions can be selected for testing: high temperature (85℃), low temperature (-40℃), and normal temperature (23℃). Steps 4-7 above constitute one pressure test cycle. The passability and durability of the first test check valve 81 and the second test check valve 82 were tested respectively. In the actual experiment, hydrogen gas was used to test the valves for 15,000 cycles.

[0042] This invention places the solenoid valves of the tested one-way valve and the tested hydrogen storage cylinder valve on a platform. Through this cyclic test, the pressure-bearing durability and flowability of the tested one-way valve 81 and tested valve 2 can be measured simultaneously. Additionally, the solenoid valve of the tested cylinder valve, namely the tested gas shut-off valve 53, can also be tested to ensure it functions correctly. The pressure-bearing durability of the tested hydrogen storage cylinder valve and the tested one-way valve examines their pressure resistance and airtightness.

[0043] In the description of this utility model, it should be understood that the terms "left", "right", "front", "back", "between", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In this utility model, unless otherwise explicitly specified and limited, the term "connection" and other such terms should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to a mechanical connection, an electrical connection, or a communication connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-pressure durability test bench for a combination of a one-way valve and a hydrogen storage cylinder valve, characterized in that... The test includes a gas circulation system, an environmental chamber (3), and a central controller (2). The gas circulation system includes an intake device group, an exhaust device group, and a gas pipeline. The gas pipeline connects the intake device group and the valve under test in the environmental chamber (3) to form a closed gas circulation loop. The gas pipeline is also connected to the exhaust device group for venting the gas in the gas circulation loop. The central controller (2) is connected to the intake device group, the environmental chamber (3), and the exhaust device group. The environmental chamber (3) includes a one-way valve under test and a hydrogen storage cylinder valve under test. The one-way valve under test and the hydrogen storage cylinder valve under test together form a test bench. The environmental chamber (3) is provided with a gas inlet. The intake device group is connected to the gas inlet of the environmental chamber (3) and a No. 1 test gas shut-off valve (51) is provided. The exhaust device group is also connected to the gas inlet of the environmental chamber (3). The gas path is connected by setting a No. 1 multi-port (61).

2. The high-pressure durability test bench for a combination of a one-way valve and a hydrogen storage cylinder valve according to claim 1, characterized in that... The central controller (2) is connected to the No. 1 test gas shut-off valve (51).

3. The high-pressure durability test bench for a combination of a one-way valve and a hydrogen storage cylinder valve according to claim 1, characterized in that... The environmental chamber (3) includes a first test check valve (81), a second test check valve (82), a second test gas shut-off valve (52), and a test hydrogen storage cylinder valve. The test hydrogen storage cylinder valve has a built-in electromagnetic switch and is connected to the environmental chamber (3) as a third test gas shut-off valve (53). The front end of the first test check valve (81) and the rear end of the second test check valve (82) are respectively connected to the gas inlet of the environmental chamber (3). The rear end of the first test check valve (81) is connected to the second test gas shut-off valve (52), and the front end of the second test check valve (82) is connected to the third test gas shut-off valve (53). The second test gas shut-off valve (52) and the third test gas shut-off valve (53) are connected to form a circuit.

4. The high-pressure durability test bench for a combination of a one-way valve and a hydrogen storage cylinder valve according to claim 3, characterized in that... It also includes a data acquisition system, which includes a first pressure sensor (71) and a second pressure sensor (72). A second multi-port (62) is provided between the second test gas shut-off valve (52) and the third test gas shut-off valve (53), and the second pressure sensor (72) is connected to it. A first multi-port (61) is provided between the first test gas shut-off valve (51) and the gas inlet of the environmental chamber (3), and the first pressure sensor (71) is connected to it. The central controller (2) is connected to the first pressure sensor (71) and the second pressure sensor (72) respectively.

5. The high-pressure durability test bench for a combination of a one-way valve and a hydrogen storage cylinder valve according to claim 1, characterized in that... The environmental chamber (3) is also equipped with a heating element (31), a cooling device (32) and a temperature sensor (33), and the central controller (2) is connected to the heating element (31), the cooling device (32) and the temperature sensor (33) respectively.

6. The high-pressure durability test bench for a combination of a one-way valve and a hydrogen storage cylinder valve according to claim 1, characterized in that... The air intake equipment group includes a booster (13), an air source (12) and an air compressor (11). The air source (12) and the air compressor (11) are respectively connected to the booster (13). The outlet of the booster (13) is connected to the first test gas shut-off valve (51).

7. The high-pressure durability test bench for a combination of a one-way valve and a hydrogen storage cylinder valve according to claim 6, characterized in that... The gas source (12) is hydrogen.

8. The high-pressure durability test bench for a combination of a one-way valve and a hydrogen storage cylinder valve according to claim 6, characterized in that... A drive gas on / off shut-off valve (14) is provided between the air compressor (11) and the booster device (13), and the central controller (2) is connected to the drive gas on / off shut-off valve (14).

9. The high-pressure durability test bench for a combination of a one-way valve and a hydrogen storage cylinder valve according to claim 1, characterized in that... The exhaust equipment group is equipped with a pressure reducing valve (41) and a gas discharge shut-off valve (43) in the pipeline. The pressure reducing valve (41) is connected to a multi-port valve (61). The gas discharge shut-off valve (43) in the pipeline is located behind the pressure reducing valve (41). The central controller (2) is connected to the gas discharge shut-off valve (43) in the pipeline.

10. A high-pressure durability test bench for a combination of a one-way valve and a hydrogen storage cylinder valve according to claim 1, characterized in that... The exhaust equipment group also includes a throttle valve (42), which is located between the pressure reducing valve (41) and the gas discharge shut-off valve (43) in the pipeline.

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