Limit temperature and pressure cycle test device for high-pressure hydrogen cylinder valve

Abstract

The utility model relates to the technical field of high-pressure gas cylinder detection, in particular to a high-pressure hydrogen cylinder valve limiting temperature and pressure cycle test device which comprises a pressurization control device and a detection device, the pressurization control device is provided with a first test port, a second test port and a low-pressure nitrogen outlet, and the detection device comprises an anti-explosion high-low temperature box test bin. A metal testing container is installed in the anti-explosion high-low temperature box testing bin, a low-pressure nitrogen outlet is connected with a jacket between the anti-explosion high-low temperature box testing bin and the metal testing container through a pipeline, a device to be detected is installed in the metal testing container, and the device to be detected is connected with a first testing opening and a second testing opening through pipelines. And a hydrogen concentration alarm is arranged on the detection device. According to the utility model, the hydrogen concentration alarm is arranged on the detection device, so that the hydrogen concentration can be efficiently tested in real time, and accidents caused by over-high hydrogen concentration are avoided; the pressurization control device can simulate different working conditions, and the limit temperature and pressure of the high-pressure hydrogen cylinder valve can be evaluated conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure gas cylinder detection, in particular to a high-pressure hydrogen cylinder valve extreme temperature pressure cycle test device. Background Art

[0002] With the increasing shortage of fossil energy and environmental pollution, gaseous energy such as natural gas and hydrogen with high energy efficiency and low emission plays an increasingly important role in our current and future life. In order to obtain higher volume storage density and mass storage density, containers used to store these gases generally adopt high-pressure storage. In order to ensure the safety of high-pressure hydrogen energy recycling, existing high-pressure hydrogen storage devices are often equipped with bottle mouth valves to control the opening and closing of hydrogen in hydrogen storage cylinders.

[0003] When testing the safety of bottle mouth valves, very high safety requirements are placed on the test device. However, currently there are few devices for testing the safety of bottle mouth valves, and there are certain safety hazards. Utility Model Content

[0004] The utility model aims to provide a high-pressure hydrogen cylinder valve extreme temperature pressure cycle test device, which can safely and efficiently detect the high-pressure hydrogen cylinder valve.

[0005] The utility model provides a high-pressure hydrogen cylinder valve extreme temperature pressure cycle test device, comprising a boost control device and a detection device, wherein the boost control device is provided with a driving gas source inlet, a hydrogen inlet, a nitrogen purge inlet, a first test port, a second test port and a low-pressure nitrogen outlet, wherein the detection device comprises an explosion-proof high and low temperature box test chamber, wherein a metal test container is installed inside the explosion-proof high and low temperature box test chamber, wherein a jacket is formed between the explosion-proof high and low temperature box test chamber and the metal test container, wherein the low-pressure nitrogen outlet is connected to the jacket through a pipeline, wherein a device to be detected is installed inside the metal test container, wherein a pipeline of the device to be detected is connected to the first test port and the second test port, and wherein a hydrogen concentration alarm is provided on the detection device.

[0006] Preferably, the hydrogen concentration alarm includes a hydrogen alarm controller and a hydrogen detector, the hydrogen detector is located inside the metal test container, the hydrogen alarm controller is located outside the explosion-proof high and low temperature box test chamber, and the hydrogen detector is electrically connected to the hydrogen alarm controller.

[0007] Preferably, the device to be tested includes a manual stop valve connected to the first test port, an overflow port is provided between the manual stop valve and the first test port, the manual stop valve is connected to the first filter, the test fixture and the second test port in sequence, a first one-way valve and an automatic stop valve are arranged in parallel between the manual stop valve and the first filter, and the test fixture is also connected to PRD.

[0008] Preferably, the driving air source inlet is connected to the second filter, the first pressure regulating valve, the first pressure gauge, the first solenoid valve and the supercharger in sequence through a pipeline, the pipeline between the second filter and the first pressure regulating valve is connected in parallel to the input ends of the second pressure regulating valve and the second one-way valve, the output end of the second pressure regulating valve is connected to the second pressure gauge, the second solenoid valve and the pneumatic rotary tooling in sequence, the first one-way throttle valve and the second one-way throttle valve are arranged in parallel between the second solenoid valve and the pneumatic rotary tooling, and the output end of the second one-way valve is connected to the air storage tank, the filter pressure reducing valve and the third solenoid valve in sequence.

[0009] Preferably, a plurality of the third solenoid valves are provided in parallel.

[0010] Preferably, a first pressure sensor is provided on the pipeline between the second filter and the first pressure regulating valve.

[0011] Preferably, the hydrogen inlet is sequentially connected to the first gas control valve, the third one-way valve, the third filter, the second pressure sensor and the supercharger through a pipeline.

[0012] Preferably, the supercharger outlet is connected to the cooling disk input end, and the cooling disk output end is sequentially connected to the first needle valve, the high-pressure buffer tank, the second needle valve, the first temperature sensor, the second pressure gauge, the first electronically controlled regulating valve, the third pressure gauge, the third pressure sensor, the second air-controlled valve, the fourth pressure sensor, the fourth pressure gauge and the first test port;

[0013] The pipeline where the second pressure gauge is located is also connected to a third gas-controlled valve and a flame arrester through a pipeline, a fourth gas-controlled valve is provided between the fourth pressure sensor and the flame arrester, and the output end of the fourth gas-controlled valve is also connected to a fifth gas-controlled valve, a fifth pressure sensor, a fifth pressure gauge and the second test port in sequence through a pipeline;

[0014] The output end of the cooling disk is also connected to a third needle valve and the flame arrester. The third needle valve is arranged in parallel with the safety valve. The input end of the third needle valve is also connected to the pipeline where the first temperature sensor is located.

[0015] Preferably, the outlet of the supercharger is further provided with a fourth one-way valve connected in parallel with the cooling disk, and the output end of the fourth one-way valve is connected to the flame arrester.

[0016] Preferably, the nitrogen purge inlet is connected to the sixth gas control valve, the fifth one-way valve and the output end of the third one-way valve in sequence through a pipeline, and the pipeline between the nitrogen purge inlet and the sixth gas control valve is connected to the second pressure regulating valve, the fourth solenoid valve and the low-pressure nitrogen outlet.

[0017] Beneficial effects:

[0018] The utility model provides a hydrogen concentration alarm on the detection device, so as to test the hydrogen concentration of the current detection environment in real time and efficiently, and avoid accidents caused by excessive hydrogen concentration. The boost control device in the utility model can simulate different working conditions, so as to evaluate the extreme temperature and pressure of the high-pressure hydrogen cylinder valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the boost control device of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the detection device of the utility model.

[0023] Description of reference numerals:

[0024] 1-boost control device, 2-detection device, 3-second filter; 4-first pressure sensor, 5-first pressure regulating valve, 6-first pressure gauge, 7-second pressure regulating valve, 8-second pressure gauge, 9-second solenoid valve, 10-through-plate ferrule joint, 11-first one-way throttle valve, 12-second one-way throttle valve, 13-pneumatic rotary tooling, 14-second one-way valve, 15-gas storage tank, 16-first solenoid valve, 17-supercharger, 18-first gas control valve, 19-third one-way valve, 20-sixth pressure gauge, 21-third filter, 22-second pressure sensor, 23-sixth gas control valve, 24-fifth one-way valve, 25-cooling plate, 26-first needle valve, 27-high-pressure buffer tank, 28-second needle valve, 29-first temperature sensor, 30-safety valve, 31-third needle valve, 32-second pressure gauge, 33-sixth pressure sensor, 34-third gas Control valve, 35-first electric control regulating valve, 36-third pressure gauge, 37-fourth needle valve, 38-third pressure sensor, 39-second gas control valve, 40-fourth pressure sensor, 41-fourth pressure gauge, 42-fourth gas control valve, 43-fifth gas control valve, 44-fifth pressure sensor, 45-fifth pressure gauge, 46-fourth check valve, 47-flame arrester, 48-first test port, 49-second test port, 50-low-pressure nitrogen outlet, 51-second pressure regulating valve, 52-fourth solenoid valve, 53-emptying port, 54-filter pressure reducing valve, 55-third solenoid valve, 56-manual stop valve, 57-first check valve, 58-first filter, 59-test tooling, 60-PRD, 61-automatic stop valve, 62-overflow port, 63-hydrogen detector, 64-hydrogen alarm controller, 65-metal test container, 66-explosion-proof high and low temperature box test chamber. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and 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, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Example 1

[0029] like Figure 1-3 As shown, a high-pressure hydrogen cylinder valve extreme temperature pressure cycle test device includes a boost control device 1 and a detection device 2. The boost control device 1 is provided with a driving gas source inlet, a hydrogen inlet, a nitrogen purge inlet, a first test port 48, a second test port 49 and a low-pressure nitrogen outlet 50. The driving gas source inlet is connected to the second filter 3, the first pressure regulating valve 5, the first pressure gauge 6, the first solenoid valve 16 and the supercharger 17 in sequence through a pipeline. The pipeline between the second filter 3 and the first pressure regulating valve 5 is connected in parallel with the input ends of the second pressure regulating valve 517 and the second check valve 14. A first pressure sensor 4 is provided on the pipeline between the second filter 3 and the first pressure regulating valve 5. The first pressure sensor 4 is located at the pipeline connection to facilitate the detection of the current pipeline pressure.

[0030] The output end of the second check valve 14 is connected to the gas storage tank 15, the filter pressure reducing valve 54 and the third solenoid valve 55 in sequence, and a plurality of third solenoid valves 55 are provided in parallel. The output end of the second pressure regulating valve 517 is connected to the second pressure gauge 328, the second solenoid valve 9 and the pneumatic rotary tooling 13 in sequence, and the first one-way throttle valve 11 and the second one-way throttle valve 12 are provided in parallel between the second solenoid valve 9 and the pneumatic rotary tooling 13. The pipelines where the first one-way throttle valve 11 and the second one-way throttle valve 12 are located are connected by a plate-penetrating ferrule joint 10, which is convenient for disassembly and assembly.

[0031] The outlet of the supercharger 17 is also provided with a fourth one-way valve 46 connected in parallel with the cooling disk 25 , and the output end of the fourth one-way valve 46 is connected to a flame arrester 47 .

[0032] The hydrogen inlet is connected to the first gas control valve 18, the third one-way valve 19, the third filter 21, the second pressure sensor 22 and the inlet of the supercharger 17 in sequence through a pipeline. The outlet of the supercharger 17 is connected to the input end of the cooling disk 25, and the output end of the cooling disk 25 is connected to the first needle valve 26, the high-pressure buffer tank 27, the second needle valve 28, the first temperature sensor 29, the second pressure gauge 328, the third pressure gauge 36, the third pressure sensor 38, the second gas control valve 39, the fourth pressure sensor 40, the fourth pressure gauge 41 and the first test port 48 in sequence; the pipeline between the second pressure gauge 328 and the third pressure gauge 36 is connected to the output end of the gas storage tank 15, and the first electronically controlled regulating valve 35 is provided on the above pipeline, and the above pipeline is also connected to the flame arrester 47. The sixth pressure sensor 33 is provided in parallel on the branch pipe where the second pressure gauge 328 is located, and the fourth needle valve 37 is provided on the branch pipe where the first pressure gauge 6 is located. The first electronically controlled regulating valve 35 adopts an ER5050 valve.

[0033] The pipeline where the second pressure gauge 328 is located is also connected to the third gas control valve 34 and the flame arrester 47 through a pipeline, and a fourth gas control valve 42 is provided between the fourth pressure sensor 40 and the flame arrester 47. The output end of the fourth gas control valve 42 is also connected to the fifth gas control valve 43, the fifth pressure sensor 44, the fifth pressure gauge 45 and the second test port 49 in sequence through a pipeline;

[0034] The output end of the cooling plate 25 is also connected to the third needle valve 31 and the flame arrester 47. The third needle valve 31 is arranged in parallel with the safety valve 30. The input end of the third needle valve 31 is also connected to the pipeline where the first temperature sensor 29 is located. The end of the flame arrester 47 is provided with an exhaust port 53.

[0035] The nitrogen purge inlet is connected to the sixth air control valve 23, the fifth one-way valve 24 and the output end of the third one-way valve 19 in sequence through a pipeline. The output end of the third one-way valve 19 is also provided with a sixth pressure gauge 20. The pipeline between the nitrogen purge inlet and the sixth air control valve 23 is connected to the second pressure regulating valve 517, the fourth solenoid valve 52, and the low-pressure nitrogen outlet 50.

[0036] The boost control device 1 of the utility model can simulate different working conditions, so as to facilitate the evaluation of the limit temperature and pressure of the high-pressure hydrogen cylinder valve.

[0037] The detection device 2 includes an explosion-proof high and low temperature box test chamber 66, a metal test container 65 is installed inside the explosion-proof high and low temperature box test chamber 66, a jacket is formed between the explosion-proof high and low temperature box test chamber 66 and the metal test container 65, the low-pressure nitrogen outlet 50 is connected to the jacket through a pipeline, and a device to be detected is installed inside the metal test container 65, the device to be detected includes a manual stop valve 56 connected to the first test port 48, an overflow port 62 is provided between the manual stop valve 56 and the first test port 48, the manual stop valve 56 is connected to the first filter 58, the test fixture 59 and the second test port 49 in sequence, a first check valve 57 and an automatic stop valve 61 are arranged in parallel between the manual stop valve 56 and the first filter 58, and the test fixture 59 is also connected to PRD60. PRD60 is a commonly used safety pressure relief device that can effectively avoid danger caused by excessive pressure.

[0038] The device to be tested is connected to the first test port 48 and the second test port 49 by pipelines, and a hydrogen concentration alarm is provided on the detection device 2. The hydrogen concentration alarm includes a hydrogen alarm controller 64 and a hydrogen detector 63. The hydrogen detector 63 is located inside the metal test container 65, and the hydrogen alarm controller 64 is located outside the explosion-proof high and low temperature box test chamber 66. The hydrogen detector 63 is electrically connected to the hydrogen alarm controller 64. By setting the hydrogen concentration alarm, the hydrogen concentration inside the metal test container 65 can be monitored in real time to avoid danger caused by excessively high hydrogen concentration and to avoid the test effect being reduced due to too low hydrogen concentration.

[0039] Automatic stop valve 61 extreme temperature and pressure cycle test process:

[0040] The boost control device 1 is connected to the detection device 2, and all pipelines are unloaded;

[0041] Perform nitrogen pressure replacement purge, and then perform hydrogen pressure replacement purge;

[0042] The explosion-proof high and low temperature box test chamber 66 and the supercharger 17 work simultaneously, and the hydrogen is pressurized to the test pressure through the supercharger 17. After the system detects that the ambient temperature in the explosion-proof high and low temperature box test chamber 66 reaches the set value and remains unchanged for the set time, it starts to perform the limit temperature pressure cycle test of the automatic stop valve 61. The hydrogen passes through the first test port 48 to the test piece, and the automatic stop valve 61 starts to perform the cycle opening and closing test. The ER5050 valve always adjusts the test pressure to keep it stable;

[0043] After the cycle test is completed, all pipelines are unloaded and the explosion-proof high and low temperature box test chamber 66 is used for nitrogen pressure replacement and purging.

[0044] Manual stop valve 56 extreme temperature and pressure cycle test process:

[0045] The boost control device 1 is connected to the detection device 2, and all pipelines are unloaded;

[0046] Perform nitrogen pressure replacement purge, and then perform hydrogen pressure replacement purge;

[0047] The explosion-proof high and low temperature box test chamber 66 and the supercharger 17 work simultaneously, and the hydrogen is pressurized to the test pressure through the supercharger 17. After the system detects that the ambient temperature in the explosion-proof high and low temperature box test chamber 66 reaches the set value and remains unchanged for the set time, it starts to do the limit temperature pressure cycle test of the manual stop valve 56. The hydrogen passes through the first test port 48 to the test piece, and the manual stop valve 56 starts to do the cycle opening and closing test. The ER5050 valve always adjusts the test pressure to keep it stable;

[0048] After the cycle test is completed, all pipelines are unloaded and the explosion-proof high and low temperature box test chamber 66 is used for nitrogen pressure replacement and purging.

[0049] The first one-way valve 57 extreme temperature and pressure cycle test process:

[0050] The boost control device 1 is connected to the detection device 2, and all pipelines are unloaded;

[0051] Perform nitrogen pressure replacement purge, and then perform hydrogen pressure replacement purge;

[0052] The explosion-proof high and low temperature box test chamber 66 and the supercharger 17 work simultaneously, and the hydrogen is pressurized to the test pressure through the supercharger 17. After the system detects that the ambient temperature in the explosion-proof high and low temperature box test chamber 66 reaches the set value and remains unchanged for the set time, it starts to perform the limit temperature pressure cycle test of the first check valve 57. The hydrogen passes through the first test port 48 to the test piece, and the first check valve 57 starts to perform the cycle opening and closing test. The ER5050 valve always adjusts the test pressure to keep it stable;

[0053] After the cycle test is completed, all pipelines are unloaded and the explosion-proof high and low temperature box test chamber 66 is used for nitrogen pressure replacement and purging.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A high-pressure hydrogen cylinder valve extreme temperature pressure cycle test device, characterized in that: It includes a boost control device and a detection device. The boost control device is provided with a driving gas source inlet, a hydrogen inlet, a nitrogen purge inlet, a first test port, a second test port and a low-pressure nitrogen outlet. The detection device includes an explosion-proof high and low temperature box test chamber. A metal test container is installed inside the explosion-proof high and low temperature box test chamber. A jacket is formed between the explosion-proof high and low temperature box test chamber and the metal test container. The low-pressure nitrogen outlet is connected to the jacket through a pipeline. A device to be detected is installed inside the metal test container. The pipeline of the device to be detected is connected to the first test port and the second test port. A hydrogen concentration alarm is provided on the detection device.

2. The high-pressure hydrogen cylinder valve extreme temperature pressure cycle test device according to claim 1 is characterized in that: The hydrogen concentration alarm includes a hydrogen alarm controller and a hydrogen detector. The hydrogen detector is located inside a metal test container, and the hydrogen alarm controller is located outside an explosion-proof high and low temperature box test chamber. The hydrogen detector is electrically connected to the hydrogen alarm controller.

3. The high-pressure hydrogen cylinder valve extreme temperature pressure cycle test device according to claim 1 is characterized in that: The device to be tested includes a manual stop valve connected to the first test port, an overflow port is provided between the manual stop valve and the first test port, the manual stop valve is connected to a first filter, a test fixture and the second test port in sequence, a first one-way valve and an automatic stop valve are provided in parallel between the manual stop valve and the first filter, and the test fixture is also connected to PRD.

4. The high-pressure hydrogen cylinder valve extreme temperature pressure cycle test device according to claim 1 is characterized in that: The driving air source inlet is connected to the second filter, the first pressure regulating valve, the first pressure gauge, the first solenoid valve and the supercharger in sequence through a pipeline; the pipeline between the second filter and the first pressure regulating valve is connected in parallel to the input ends of the second pressure regulating valve and the second one-way valve; the output end of the second pressure regulating valve is connected to the second pressure gauge, the second solenoid valve and the pneumatic rotary tooling in sequence; the first one-way throttle valve and the second one-way throttle valve are arranged in parallel between the second solenoid valve and the pneumatic rotary tooling; the output end of the second one-way valve is connected to the air storage tank, the filter pressure reducing valve and the third solenoid valve in sequence.

5. The high-pressure hydrogen cylinder valve extreme temperature pressure cycle test device according to claim 4 is characterized in that: A plurality of the third solenoid valves are provided in parallel.

6. The high-pressure hydrogen cylinder valve extreme temperature pressure cycle test device according to claim 4 is characterized in that: A first pressure sensor is provided on the pipeline between the second filter and the first pressure regulating valve.

7. The high-pressure hydrogen cylinder valve extreme temperature pressure cycle test device according to claim 4 is characterized in that: The hydrogen inlet is connected in sequence to the first gas control valve, the third one-way valve, the third filter, the second pressure sensor and the supercharger through a pipeline.

8. The high-pressure hydrogen cylinder valve extreme temperature and pressure cycle test device according to claim 7 is characterized in that: The supercharger outlet is connected to the cooling disk input end, and the cooling disk output end is sequentially connected to the first needle valve, the high-pressure buffer tank, the second needle valve, the first temperature sensor, the second pressure gauge, the first electronically controlled regulating valve, the third pressure gauge, the third pressure sensor, the second air-controlled valve, the fourth pressure sensor, the fourth pressure gauge and the first test port; The pipeline where the second pressure gauge is located is also connected to a third gas-controlled valve and a flame arrester through a pipeline, a fourth gas-controlled valve is provided between the fourth pressure sensor and the flame arrester, and the output end of the fourth gas-controlled valve is also connected to a fifth gas-controlled valve, a fifth pressure sensor, a fifth pressure gauge and the second test port in sequence through a pipeline; The output end of the cooling disk is also connected to a third needle valve and the flame arrester. The third needle valve is arranged in parallel with the safety valve. The input end of the third needle valve is also connected to the pipeline where the first temperature sensor is located.

9. The high-pressure hydrogen cylinder valve extreme temperature pressure cycle test device according to claim 8, characterized in that: The outlet of the supercharger is also provided with a fourth one-way valve connected in parallel with the cooling disk, and the output end of the fourth one-way valve is connected to the flame arrester.

10. The high-pressure hydrogen cylinder valve extreme temperature pressure cycle test device according to claim 7, characterized in that: The nitrogen purge inlet is connected to the sixth gas control valve, the fifth one-way valve and the output end of the third one-way valve in sequence through a pipeline, and the pipeline between the nitrogen purge inlet and the sixth gas control valve is connected to the second pressure regulating valve, the fourth solenoid valve and the low-pressure nitrogen outlet.

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