CN215115149U - Hydrogen-involved high-pressure pipe valve member comprehensive test equipment - Google Patents
Hydrogen-involved high-pressure pipe valve member comprehensive test equipment Download PDFInfo
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- CN215115149U CN215115149U CN202121431295.XU CN202121431295U CN215115149U CN 215115149 U CN215115149 U CN 215115149U CN 202121431295 U CN202121431295 U CN 202121431295U CN 215115149 U CN215115149 U CN 215115149U
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Abstract
The utility model discloses a wade hydrogen high pressure pipe valve piece integrated test equipment. The pipeline structure comprises a main pipeline, a valve testing pipeline and a purging pipeline, wherein the main pipeline comprises a hydrogen inlet, a filter, a pressure regulating valve, a first pneumatic valve, a first pressure gauge, a first pressure transmitter, a second pneumatic valve and a release port, the valve testing pipeline comprises a front stop valve, a second pressure gauge, a second pressure transmitter, a testing connection outlet C, a testing connection inlet D and a rear stop valve, and the purging pipeline comprises a purging inlet, a third pneumatic valve and a one-way valve; the testing device can be used for comprehensive simulation tests of safety, reliability and durability under variable and complex working conditions of different specifications and brands and various pipe valves (such as filters, pneumatic ball valves, safety valves, one-way valves and the like), and can also be used for quality verification, national qualification certification and periodic calibration tests of hydrogen products, and the testing device is wide in application range and low in cost.
Description
Technical Field
The utility model relates to a new forms of energy pipe valve spare detects technical field, concretely relates to wade hydrogen high pressure pipe valve spare integrated test equipment.
Background
With the increase of the population base of human beings and the continuous development of scientific technology, the problems of the continuous consumption of non-renewable resources such as fossil fuel, coal, natural gas and the like and the pollution of natural environment are aggravated day by day. The development of a sustainable and clean energy technology is an urgent need for the development of human society, and is one of the hottest and most challenging topics worldwide nowadays. The hydrogen energy is an extremely abundant, inexhaustible and inexhaustible energy which can be developed nowadays. Hydrogen is an ideal clean energy carrier, which is recognized by the world and is the most promising new clean energy for people in the 21 st century, and the development and application of hydrogen energy are greatly enthusiastic and hopeful, so that various devices such as a hydrogen station, a hydrogen energy automobile, a hydrogen fuel cell and the like, and derived products are produced.
However, due to the physical and chemical characteristics of hydrogen and the flammable and explosive characteristics of a high-pressure hydrogen medium, strict technical requirements are imposed on data indexes such as safety, stability, connection sealing performance, service life and the like of the hydrogen pipe-like valve. Therefore, the product and the filling equipment of the whole machine at the present stage are designed and manufactured to ensure the safety of the hydrogen pipe valve members of different brands, and the requirement that special hydrogen pipe valve member testing equipment is needed to carry out various specialized detections on the hydrogen pipe valve members when the hydrogen pipe valve members are repeatedly used is met.
The conventional performance test equipment for hydrogen-related pipe valve members has the following defects:
1. the existing hydrogen energy valve testing equipment has multiple types, complex structure, high price, complex operation and single suitable testing project, and can not simulate and detect multiple types of problems in actual working conditions.
2. Most of the conventional hydrogen energy valve test equipment adopts a specific tool or a test device aiming at a specific product, and only can meet the test aiming at a single brand product and a single hydrogenation product, so that the application range is narrow and the systematization is poor; in actual test work, a plurality of test devices/tools are needed to realize different test projects, and various types of test equipment occupy large space, are complex in structure, layout and operation and are difficult to manage.
3. The conventional hydrogen energy valve testing equipment is usually operated manually on site, so that the operation is unsafe, the feedback testing data information is recorded and analyzed with large errors, and the accuracy and reliability of the report can not be completely guaranteed.
Disclosure of Invention
An object of the utility model is to provide a wade hydrogen high-pressure pipe valve member integrated test equipment to solve current hydrogen can valve test equipment structure complicated, be fit for examining the project single, can not satisfy multiplex condition simulation test demand, the technical problem that the cost is expensive moreover, the operation is complicated.
In order to solve the technical problem, the utility model adopts the following technical scheme:
design a wade hydrogen high-pressure tube valve member integrated test equipment, include the rack, install test pipeline structure, PLC control system on this rack, test pipeline structure includes:
the main pipeline comprises a hydrogen inlet, a filter, an automatic pressure regulating valve, a first pneumatic valve, a first pressure gauge, a first pressure transmitter, a second pneumatic valve and a diffusion port B which is connected with the corresponding centralized diffusion pipeline in sequence through corresponding pipelines, wherein the hydrogen inlet is used for being connected with a corresponding hydrogen source;
the valve test pipeline is connected into the main pipeline in parallel with the second pneumatic valve and comprises a front end stop valve, a second pressure gauge, a second pressure transmitter, a valve test connection outlet C, a valve test connection inlet D and a rear end stop valve which are connected by corresponding pipelines; and the C or/and the D are used for butt joint installation of the valve pipe fitting to be tested.
Preferably, the first pneumatic valve or/and the second pneumatic valve are connected in parallel with a corresponding bypass branch with a stop valve.
Preferably, the test pipeline structure further comprises a purging gas circuit for releasing purging gas into the main pipeline and the valve test pipeline, the purging gas circuit comprises a purging inlet F, a third pneumatic valve and a one-way valve which are sequentially connected by corresponding pipelines, and the purging inlet is used for communicating with a corresponding purging gas source.
Preferably, the third pneumatic valve is connected in parallel with a corresponding bypass branch with a stop valve.
Preferably, the pneumatic actuating mechanisms of the first pneumatic valve, the second pneumatic valve or/and the third pneumatic valve are respectively communicated with the corresponding instrument air source through the corresponding solenoid valves and the corresponding pneumatic triplets so as to realize the opening and closing control of the corresponding pneumatic valve valves.
Preferably, the PLC control unit system includes a PLC controller, an analog input module AI, an analog output module AO, a switching power supply ZD, and an input/output terminal, and the PLC controller receives and processes the relevant information collected by the first pressure transmitter and the second pressure transmitter through the analog input module AI, and controls the opening and closing of each electromagnetic valve according to a set value or an input instruction.
Preferably, a corresponding one-way valve is provided at the hydrogen inlet.
Preferably, a mounting vertical plate is arranged on one side of the rack, and a first pressure gauge, a second pressure gauge and a valve test connection outlet C in the test pipeline structure are mounted on the mounting vertical plate.
Compared with the prior art, the utility model discloses a main beneficial technological effect lies in:
1. the device can comprehensively simulate and detect different requirements of hydrogen pipe valves (such as filters, pneumatic ball valves, safety valves, one-way valves and the like) with different specifications and brands in a practical use environment and the safety, reliability and durability under complex working conditions; the device is also suitable for performance quality verification tests, national qualification tests, periodic calibration tests and the like of the existing hydrogen pipe valve in the production and use processes, so as to avoid unnecessary damage, loss and destruction to human bodies, equipment, economy and environment in the use processes of hydrogenation equipment (such as hydrogenation station equipment, hydrogen pipe bundle vehicles, hydrogen production equipment, hydrogen storage equipment and the like) and hydrogen products (such as hydrogenation civil vehicles, ships, airplanes and other vehicles).
2. The method has the advantages of simple and convenient operation and use, safety, reliability and low test cost, and can be widely applied to the test of the pipe valve members of hydrogenation machines, gas filling machines and other high, medium and low pressure gas chemical raw material filling equipment.
Drawings
Fig. 1 is a schematic structural diagram of a comprehensive testing device for hydrogen-related high-pressure pipe valves.
Fig. 2 is a pipeline system diagram of a hydrogen-related high-pressure pipe valve comprehensive testing device.
Fig. 3 is a control schematic diagram of a hydrogen-related high-pressure pipe valve member comprehensive testing device.
In the above figures, 1 is a filter, 2 is a first pneumatic valve, 3 is a second pneumatic valve, 4 is a third pneumatic valve, 5 is an automatic pressure regulating valve, 6 is a one-way valve, 7 is a first pressure transmitter, 8 is a second pressure sensor, 9, 10, 11, 12, 13 are stop valves HNV101, HNV102, HNV103, HNV104, HNV105, 14 is a first pressure gauge, 15 is a second pressure gauge, 16, 17, 18, 19, 20 are sequentially solenoid valves SV101, SV102, SV103, SV104, SV105, 21 are pneumatic triplets, 22 is a through quick-connect connector, 23 is an adapter sleeve, 24 is a test interface, 25 is a three-way valve block, 26 is a right-angle valve block, 27 is a three-way valve block, 28 is a four-way valve block, 29 is a four-way valve block, 30 is a pressure gauge adapter, 31, 32 are steel pipes, 33 is a polyurethane gas pipe, 34 is a stand, 35 is an installation riser, 36 is a control box, 37 is an operation control panel, a is a hydrogen inlet, B is a diffusion port, C is a valve test connection outlet, D is a valve test connection inlet, and F is a nitrogen purging inlet.
Detailed Description
The following embodiments are only intended to illustrate the present invention in detail, and do not limit the scope of the present invention in any way.
In the description of the technical solutions of the present invention, it should be understood that the directions or positional relationships indicated as referring to the terms "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but 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 thus, should not be construed as limiting the present invention. Reference herein to "first," "second," etc., is used to distinguish between similar items and not to limit the particular order or sequence.
Example (b): the hydrogen-related high-pressure pipe valve comprehensive testing equipment mainly comprises a rack 34, a comprehensive testing pipeline structure arranged on the rack and a PLC control system, and is shown in figures 1 to 3; the comprehensive test pipeline structure includes:
1. the main pipeline comprises a hydrogen inlet A, a filter (F101) 1, an automatic pressure regulating valve (FV 101) 5, a first pneumatic valve (XV101)2, a first pressure gauge (PI 101) 14, a first pressure transmitter (PT 101) 7, a second pneumatic valve (XV102)3 and a diffusion port B for connecting corresponding centralized diffusion pipelines, wherein the hydrogen inlet A is connected with a corresponding hydrogen source; the first pneumatic valve (XV101)2 and the second pneumatic valve (XV102)3 are respectively connected in parallel with corresponding bypass branches, and corresponding stop valves (HNV 103, HNV 104) 11, 12 are arranged in each bypass branch; if the opening functions of the first pneumatic valve (XV101)2 and the second pneumatic valve (XV102)3 are invalid, the stop valve (HNV 103) 11 is manually opened, so that the bypass branch of the first pneumatic valve (XV101)2 can be opened; similarly, the stop valve (HNV 104) 12 is manually opened, so that the bypass branch of the second pneumatic valve (XV102)3 can be opened, and the manual test operation flow can be realized;
the pneumatic actuators of the first pneumatic valve, the second pneumatic valve and the automatic pressure regulating valve FV101 are respectively communicated with corresponding instrument air sources through corresponding solenoid valves (SV 101, SV102 and SV 104) 16, 17 and 19 and a pneumatic triplet 21 so as to realize the opening and closing control of the corresponding pneumatic valves and automatic pressure regulating valves.
Hydrogen enters the inlet end of a main pipeline from a hydrogen inlet A, passes through a filter (F101) 1, a solenoid valve (SV 104) 19 is electrified, an instrument air source enters a pneumatic actuating mechanism of an automatic pressure regulating valve (FV 101) 5 through a pneumatic triple piece 21, the valve of the automatic pressure regulating valve 5 is opened, and the pressure of the hydrogen is regulated to a set pressure; the electromagnetic valve (SV 101) 16 is electrified, an instrument air source enters the pneumatic actuating mechanism of the first pneumatic valve (XV101)2 through the pneumatic triple piece 21, the valve of the pneumatic valve 2 is opened, hydrogen flows through the first pressure gauge (PI 101, the pressure gauge measures and displays the pressure value of the main pipeline) 14 and the first pressure transmitter (PT101, collects pressure data of the main pipeline in real time and transmits the pressure data to the background central processing unit, and mutual verification and compensation of the pressure data of the automatic pressure regulating valve FV101 can be realized) 7.
The electromagnetic valve (SV 101) 16 is powered off, the valve is closed, the air source of the branch instrument is cut off, and the valve of the first pneumatic valve (XV101)2 is closed; the solenoid valve (SV 102) 17 is electrified, the instrument air source enters the pneumatic actuating mechanism of the second pneumatic valve (XV102)3 through the pneumatic triplet 21, the valve of the second pneumatic valve 3 is opened, the hydrogen flows through the second pneumatic valve 3 and the 'diffusing port B', is discharged out of the main pipeline, enters the centralized diffusing pipeline and is decompressed.
2. A valve test line connected to the main line in parallel with the second pneumatic valve (XV102)3, comprising a pressure gauge, a pressure transmitter mounting branch and a manual bleeding branch;
the pressure gauge and the pressure transmitter mounting branch are mainly composed of a reducing three-way valve block, a front end stop valve (HNV 101) 9, a second pressure gauge (PI 102) 15, a second pressure transmitter (PT 102) 8, a connecting joint at a valve testing connection outlet C, pipe valves such as 3/8' steel pipes and the like which are connected by corresponding pipelines; the installation branch is connected with the main pipeline, and the valve test connection outlet C is connected with the inlet of the valve to be tested. The stop valve (HNV 101) 9 is manually opened, and hydrogen flows through a second pressure gauge (PI 102) 15 and a second pressure transmitter (PT 102) 8 from a main pipeline.
The manual diffusing branch mainly comprises pipe valve pieces such as a reducing three-way valve block, a rear end stop valve (HNV 102) 10, a adapter at a valve testing connection inlet D and the like; the manual diffusing branch is positioned between the valve testing connection inlet D and the diffusing port B; the valve test connection inlet D is connected with the outlet of the valve to be tested, and the discharge port B is connected with the centralized discharge pipeline. After the tested valve is tested, the stop valve (HNV 102) 10 is opened, hydrogen flows through the manual diffusing branch and enters the diffusing port B, so that the hydrogen medium in the high-pressure test enters the centralized diffusing pipeline, and the pressure relief function of the valve testing pipeline is realized.
3. The nitrogen purging and replacing pipeline is used for releasing and purging nitrogen into the main pipeline and the valve testing pipeline and comprises a purging inlet F, a third pneumatic valve (XV 103) 4 and a one-way valve (CV 101) 6 which are sequentially connected through corresponding pipelines, the third pneumatic valve 4 is connected in parallel with a corresponding bypass branch, and a stop valve (HNV105)13 is arranged in the bypass branch. And the purging inlet F is used for being communicated with a corresponding purging gas source.
During operation, after the diffusion port B is communicated with the corresponding concentrated diffusion pipeline and the purge inlet F is communicated with the corresponding purge gas source, if hydrogen exists in the main pipeline (the hydrogen pressure is not less than 0.2 MPa) before nitrogen purge gas, the electromagnetic valve (SV 102) 17 needs to be powered on, the instrument air source enters the second pneumatic valve (XV102)3 pneumatic actuating mechanism through the pneumatic triple piece (F.R.V101) 21, the second pneumatic valve (XV102)3 is started, and the hydrogen in the main pipeline flows to the concentrated diffusion pipeline. When the pressure of the hydrogen in the main pipeline is reduced to 0.2MPa, the electromagnetic valve (SV 102) 17 is powered off, the second pneumatic valve (XV102)3 is closed, and the automatic diffusion of the hydrogen in the main pipeline is realized (note: if the nitrogen is purged, the automatic diffusion operation of the hydrogen in the main pipeline is not needed to be executed under the condition that the hydrogen does not exist in the main pipeline); the electromagnetic valve (SV 103) 18 is electrified, an instrument air source enters a third pneumatic valve (XV 103) 4 pneumatic actuating mechanism through a pneumatic triple piece (F.R.V101) 21, the third pneumatic valve (XV 103) 4 valve is opened, nitrogen flows through a one-way valve (CV 101) 6 and enters a main pipeline, when the pressure of the nitrogen in the main pipeline is increased to 0.8MPa, the electromagnetic valve (SV 102) 17 is electrified (the electrification time delay is 5-10 s), the instrument air source enters a second pneumatic valve (XV102) 2 pneumatic actuating mechanism through the pneumatic triple piece (F.R.V101) 21, the valve of the second pneumatic valve (XV102)3 is opened, and the nitrogen is discharged into a centralized release pipeline at the moment; the solenoid valve (SV 102) 17 is de-energized, and the second air-operated valve (XV102)3 is valve-closed. Repeating the above actions for 3 times, namely realizing nitrogen purging and replacement of the whole pipeline system by nitrogen.
An installation vertical plate 35 is arranged on one side of the rack 34, and a first pressure gauge 14, a second pressure gauge 15 and a valve test connection outlet C in the detection pipeline structure are installed on the installation vertical plate 35.
Referring to fig. 3, the PLC control system includes a PLC controller (SR 20 AC/DC/RLY), an analog input module AI (EM AI 04), an analog output module AO (EM AQ 02), a switching power supply ZD (PSU 100D 24V/2.1A), and an input/output terminal (including a touch screen Smart Line 700IE V3 and an emergency stop button LA 39-B2-R02Z/R), where the PLC controller receives and processes relevant information collected by the first and second pressure transmitters through the analog input module AI, and controls on/off of the solenoid valves according to a set value or an input instruction.
The test items which can be implemented by utilizing the comprehensive test equipment comprise valve durability test, valve air tightness test, valve compression strength test, pneumatic valve start and stop service life test, safety valve jump working pressure debugging and the like; the following description will be made by taking the valve airtightness test and the start-stop service life test of the pneumatic valve as examples:
(1) valve air tightness test
After the diffusion port B is communicated with the corresponding centralized diffusion pipeline and the purging inlet F is communicated with the corresponding purging gas source, if hydrogen exists in the main pipeline before nitrogen purging (the hydrogen pressure is more than or equal to 0.2 MPa), the second pneumatic valve is opened to enable the hydrogen in the main pipeline to flow to the centralized diffusion pipeline, and when the hydrogen pressure in the main pipeline is reduced to 0.2MPa, the second pneumatic valve is closed to finish the automatic diffusion of the hydrogen in the main pipeline; opening the third pneumatic valve, enabling nitrogen to flow through the one-way valve to enter a main pipeline, opening the second pneumatic valve (the opening duration is 5-10 s) when the pressure of the nitrogen is increased to 0.8MPa, and discharging the nitrogen into a centralized diffusion pipeline; and then closing the second pneumatic valve, and repeating the actions for 3 times to realize nitrogen purging and replacement of the whole pipeline system by nitrogen.
Ensuring that all stop valves (HNV 101, HNV102, HNV103, HNV104 and HNV105) are in a closed state after purging is finished, connecting an inlet of a valve to be tested with the C, keeping an outlet of the valve to be tested in a sealed state, and then opening the front end stop valve HNV101 to enable a valve testing interface to be communicated with the main pipeline;
a hydrogen inlet is communicated with a corresponding hydrogen source, hydrogen flows through the filter for purification, the automatic pressure regulating valve is used for regulating the pressure to a set pressure, the electromagnetic valve SV101 is electrified, an execution gas source enters the first pneumatic valve XV101 pneumatic execution mechanism, and the first pneumatic valve XV101 is opened to enable the hydrogen flow to enter a valve test pipeline;
closing the front end stop valve HNV101 when the pressure of the hydrogen rises to the test pressure of the valve to be tested, and monitoring the pressure change based on the second pressure gauge or/and the second pressure transmitter; meanwhile, the air tightness of each measuring point is checked by using a leakage detection liquid, the duration is not less than 3min, if no continuous bubbles are generated within 1min, the air tightness test of the hydrogenation port is qualified if no hydrogen leaks in the test process, and otherwise, the air tightness test of the hydrogenation port is unqualified;
(2) starting and stopping service life test of pneumatic valve
After the diffusion port B is communicated with the corresponding centralized diffusion pipeline and the purging inlet F is communicated with the corresponding purging gas source, if hydrogen exists in the main pipeline before nitrogen purging (the hydrogen pressure is not less than 0.2 MPa), the second pneumatic valve is opened to enable the hydrogen in the main pipeline to flow to the centralized diffusion pipeline, and when the hydrogen pressure in the main pipeline is reduced to 0.2MPa, the second pneumatic valve is closed to realize the automatic diffusion of the hydrogen in the main pipeline (note: if hydrogen does not exist in the main pipeline before nitrogen purging), the automatic diffusion operation of the hydrogen in the main pipeline is not required to be executed); opening the third pneumatic valve, enabling nitrogen to flow through the one-way valve to enter a main pipeline, opening the second pneumatic valve (the opening duration is 5-10 s) when the pressure of the nitrogen is increased to 0.8MPa, and discharging the nitrogen into a centralized diffusion pipeline; then, the second pneumatic valve is closed, and the actions are repeated for 3 times, so that nitrogen purging replacement of the whole pipeline system by nitrogen can be realized;
ensuring that all stop valves (HNV 101, HNV102, HNV103, HNV104 and HNV105) are in a closed state after purging is completed, connecting an inlet of the pneumatic valve to be tested with the valve C, butting an outlet of the pneumatic valve to be tested with the valve D, and then opening the front end stop valve HNV101 and the rear end stop valve HNV 102;
introducing hydrogen flow from the hydrogen inlet, purifying by the filter F101, and regulating the pressure to a set pressure by an automatic pressure regulating valve;
energizing an electromagnetic valve SV101, enabling an execution origin to enter the first pneumatic valve XV101 pneumatic execution mechanism, opening a pneumatic valve to enable hydrogen flow to enter a valve test pipeline, maintaining the pressure for 10s when the hydrogen pressure in the pipeline rises to the working pressure of the pneumatic valve to be tested, then energizing an electromagnetic valve SV105, enabling an execution air source to enter the pneumatic execution mechanism of the tested pneumatic valve, opening the tested pneumatic valve, discharging hydrogen out of the main pipeline, and enabling the main pipeline to be in a pressure relief state at the moment;
and fifthly, repeating the step IV to realize the start and stop service life test of the pneumatic valve to be tested.
The present invention has been described in detail with reference to the accompanying drawings and embodiments, but those skilled in the art will understand that various specific parameters in the above embodiments can be changed or equivalent substitutions can be made on related components, pipeline structures and materials without departing from the scope of the present invention, so as to form a plurality of specific embodiments, which are common variations of the present invention and will not be described in detail herein.
Claims (8)
1. The utility model provides a wade hydrogen high-pressure tube valve spare integrated test equipment, includes the rack, installs test pipeline structure, PLC control system on this rack, its characterized in that, test pipeline structure includes:
the main pipeline comprises a hydrogen inlet, a filter, an automatic pressure regulating valve, a first pneumatic valve, a first pressure gauge, a first pressure transmitter, a second pneumatic valve and a diffusion port for connecting the corresponding concentrated diffusion pipeline, wherein the hydrogen inlet is connected with a corresponding hydrogen source;
the valve test pipeline is connected into the main pipeline in parallel with the second pneumatic valve and comprises a front end stop valve, a second pressure gauge, a second pressure transmitter, a valve test connection outlet C, a valve test connection inlet D and a rear end stop valve which are connected by corresponding pipelines; and the C or/and the D are used for butt joint installation of the valve pipe fitting to be tested.
2. The integrated hydrogen-related high-pressure pipe valve element testing device according to claim 1, wherein the first pneumatic valve or/and the second pneumatic valve are/is connected in parallel with corresponding bypass branches with stop valves.
3. The comprehensive test equipment for hydrogen-involved high-pressure pipe and valve elements according to claim 1 or 2, wherein the test pipeline structure further comprises a purge gas circuit for releasing purge gas into the main pipeline and the valve test pipeline, the purge gas circuit comprises a purge inlet, a third pneumatic valve and a one-way valve which are sequentially connected through corresponding pipelines, and the purge inlet is used for being communicated with a corresponding purge gas source.
4. The integrated hydrogen-related high-pressure pipe valve element testing device as claimed in claim 3, wherein the third pneumatic valve is connected in parallel with a corresponding bypass branch with a stop valve.
5. The comprehensive testing equipment for hydrogen-related high-pressure pipe valve elements according to claim 4, wherein the pneumatic actuators of the first pneumatic valve, the second pneumatic valve or/and the third pneumatic valve are respectively communicated with corresponding instrument air sources through corresponding solenoid valves and pneumatic triplets so as to realize the opening and closing control of the corresponding pneumatic valve elements.
6. The integrated test equipment for hydrogen-involved high-pressure pipe valve elements according to claim 5, wherein the PLC control system comprises a PLC controller, an analog input module AI, an analog output module AO, a switching power supply ZD and an input/output terminal, and the PLC controller receives and processes the relevant information collected by the first pressure transmitter and the second pressure transmitter through the analog input module AI and controls the on/off of each electromagnetic valve according to a set value or an input instruction.
7. The integrated hydrogen-related high-pressure tube valve member testing device as claimed in claim 1, wherein a corresponding check valve is provided at the hydrogen gas inlet.
8. The integrated test equipment for hydrogen-related high-pressure pipe valves as claimed in claim 1, wherein a mounting vertical plate is arranged on one side of the rack, and the first pressure gauge, the second pressure gauge and the valve test connection outlet C in the test pipeline structure are mounted on the mounting vertical plate.
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| CN202121431295.XU CN215115149U (en) | 2021-06-26 | 2021-06-26 | Hydrogen-involved high-pressure pipe valve member comprehensive test equipment |
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