Testing device and high-speed gas impact testing device for hydrogen sensor

Abstract

The utility model discloses a testing device and a high-speed gas impact testing device for a hydrogen sensor, and relates to the technical field of gas impact testing, and the testing device comprises a box body, a gas injection assembly, a clamping assembly and a controller, a sealed test cavity is formed in the box body, and the box body is provided with a first side wall and a second side wall which are opposite to each other in a first direction; the air injection assembly comprises an air source, an air injection unit and a connecting pipeline connecting the air injection unit and the air source, the air source is arranged outside the box body, the air injection unit is arranged inside the box body and installed on the first side wall, the air injection unit comprises air injection pipes in multiple directions, and each air injection pipe is provided with a control valve; the clamping assembly is mounted on the second side wall and comprises a clamping part which can stretch and retract in the first direction and can move on the second side wall and a driving part for driving the clamping part to move, and the clamping part is used for clamping the gas sensor to be detected; and the controller is electrically connected with the control valve and the driving part. According to the technical scheme, the impact direction and the impact distance can be changed.

Description

Technical Field

[0001] This utility model relates to the field of gas impact testing technology, and in particular to a testing device and a high-speed gas impact testing device for hydrogen sensors. Background Technology

[0002] Factories have many pipelines used for gas transportation. When gas leaks in these pipelines, the leakage rate is fast. In order to reduce losses and avoid safety hazards, it is necessary to detect the area of ​​the leak as soon as possible so that the staff can carry out maintenance. Therefore, it is particularly important to install gas sensors in the location where gas leaks can be detected as quickly as possible.

[0003] Currently, the industry mainly relies on fixed test devices for high-speed gas impact testing of hydrogen sensors. These devices typically employ a single-channel direct injection structure, and neither the impact distance nor the injection angle can be dynamically adjusted. During testing, the fixed impact mode struggles to simulate the multi-angle impact effects of gas jets in real-world scenarios. If the impact distance needs adjustment, the machine must be stopped for adjustment and fixture disassembly. During this process, personnel must repeatedly verify the airtightness, severely impacting testing efficiency. Utility Model Content

[0004] The main purpose of this invention is to propose a testing device and a high-speed gas impact testing device for hydrogen sensors, which aims to solve the problem that fixed testing devices are difficult to use for multi-angle impacts and to adjust the impact distance.

[0005] To achieve the above objectives, the present invention proposes a testing device for high-speed gas impact testing, comprising:

[0006] The housing has a sealed test chamber inside, and the housing has a first sidewall and a second sidewall opposite each other in a first direction;

[0007] The jet assembly includes an air source, a jet unit, and a connecting pipe connecting the jet unit and the air source. The air source is located outside the housing, the jet unit is located inside the housing and installed on the first side wall, and the jet unit includes jet pipes distributed in multiple directions, each of which is provided with a control valve.

[0008] A clamping assembly, mounted on the second sidewall, includes a clamping portion retractably movable in a first direction and movable on the second sidewall, and a driving portion for driving the clamping portion to move. The clamping portion is used to clamp a gas sensor to be detected.

[0009] The controller is electrically connected to the control valve and the drive unit.

[0010] In one embodiment, the clamping part includes a track device and a telescopic arm disposed on the second side wall;

[0011] The track device includes two first tracks that are opposite each other in a second direction and extend upward along a third direction, and a second track that is movably connected to the two first tracks;

[0012] One end of the telescopic arm is movably connected to the second track, and the other end protrudes toward the first sidewall. The other end of the telescopic arm is used to clamp the gas sensor to be detected.

[0013] The drive unit includes a first drive unit that drives the second track to move along a third direction and a second drive unit that drives the telescopic arm to move along a second direction on the second track.

[0014] In one embodiment, the testing device further includes an exhaust pipe, which is installed on the second side wall and connects the testing chamber to the outside. An exhaust pipe valve is provided on the exhaust pipe.

[0015] In one embodiment, a gas recovery device is provided at one end of the exhaust pipe extending out of the test device.

[0016] In one embodiment, the plurality of jet pipes includes a first jet pipe along a first direction and a plurality of second jet pipes along a second direction;

[0017] The control valve includes a first control valve disposed on the first jet pipe and a second control valve disposed on the second jet pipe.

[0018] In one embodiment, the connecting pipeline includes a gas distribution pipeline, which is connected to the jet assembly via a gas supply branch pipe;

[0019] The gas source includes a gas storage tank, which is connected to the gas distribution pipeline via a gas supply main pipe.

[0020] The gas supply branch pipe is equipped with a third control valve, and the gas supply main pipe is equipped with a fourth control valve.

[0021] The controller is electrically connected to the third control valve and the fourth control valve.

[0022] In one embodiment, multiple housings are provided, and correspondingly, multiple jetting assemblies and multiple clamping assemblies are provided;

[0023] The gas distribution pipeline is provided with multiple gas supply branch pipes, which are respectively connected to the jet assembly inside multiple different boxes.

[0024] In one embodiment, a flow meter is installed on the gas supply branch pipe.

[0025] In one embodiment, a pressure gauge and a pressure relief pipe are provided on the gas distribution pipe, the pressure relief pipe is connected to the inside of the gas distribution pipe and the outside, and a pressure relief pipe valve is provided on the pressure relief pipe;

[0026] The controller is electrically connected to the pressure relief pipeline valve.

[0027] This utility model also proposes a high-speed gas impact test device for hydrogen sensors, which includes a test device.

[0028] The testing apparatus includes:

[0029] The housing has a sealed test chamber inside, and the housing has a first sidewall and a second sidewall opposite each other in a first direction;

[0030] The jet assembly includes an air source, a jet unit, and a connecting pipe connecting the jet unit and the air source. The air source is located outside the housing, the jet unit is located inside the housing and installed on the first side wall, and the jet unit includes jet pipes distributed in multiple directions, each of which is provided with a control valve.

[0031] A clamping assembly, mounted on the second sidewall, includes a clamping portion retractably movable in a first direction and movable on the second sidewall, and a driving portion for driving the clamping portion to move. The clamping portion is used to clamp a gas sensor to be detected.

[0032] The controller is electrically connected to the control valve and the drive unit.

[0033] In use, the testing device of this invention first installs the gas sensor on the clamping part. After checking the airtightness of the testing device, the controller controls the opening and closing of different control valves on the jet pipes in different directions to change the direction of gas ejection from the jet unit, thereby changing the impact direction of the gas impact test. Then, the impact distance of the gas impact test is changed by altering the position and extension distance of the clamping part. By repeatedly testing the alarm time of the gas sensor in different positions facing gas impacts from different directions, the optimal installation position of the gas sensor at the work site is determined. The technical solution of this invention uses the controller to control the opening and closing of different control valves on the jet pipes in different directions, as well as the position and extension distance of the clamping part, to change the impact direction and impact distance of the gas impact test. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 A schematic diagram of the structure of an embodiment of the testing device provided by this utility model;

[0036] Figure 2 for Figure 1 Schematic diagram of the central orbit device;

[0037] Figure 3 for Figure 1 A schematic diagram of the structure of the central track device from another direction.

[0038] Explanation of icon numbers:

[0039] 100. Testing device; 1. Housing; 101. First side wall; 102. Second side wall; 2. Gas source; 21. Gas storage tank; 3. Jet unit; 31. First jet pipe; 32. Second jet pipe; 4. Clamping assembly; 41. Telescopic arm; 42. First track; 43. Second track; 5. Controller; 6. Exhaust pipe; 7. Exhaust pipe valve; 8. First control valve; 9. Second control valve; 10. Gas distribution pipe; 11. Gas supply branch pipe; 12. Gas supply main pipe; 13. Third control valve; 14. Fourth control valve; 15. Flow meter; 16. Pressure gauge; 17. Pressure relief pipe; 18. Pressure relief pipe valve.

[0040] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0042] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0043] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0044] Factories have many pipelines used for gas transportation. When gas leaks in these pipelines, the leakage rate is fast. In order to reduce losses and avoid safety hazards, it is necessary to detect the area of ​​the leak as soon as possible so that the staff can carry out maintenance. Therefore, it is particularly important to install gas sensors in the location where gas leaks can be detected as quickly as possible.

[0045] Currently, the industry mainly relies on fixed test devices for high-speed gas impact testing of hydrogen sensors. These devices typically employ a single-channel direct injection structure, and neither the impact distance nor the injection angle can be dynamically adjusted. During testing, the fixed impact mode struggles to simulate the multi-angle impact effects of gas jets in real-world scenarios. If the impact distance needs adjustment, the machine must be stopped for adjustment and fixture disassembly. During this process, personnel must repeatedly verify the airtightness, severely impacting testing efficiency.

[0046] This invention proposes a testing device 100 capable of changing the impact direction and impact distance in a gas impact test.

[0047] Please see Figure 1In one embodiment of this utility model, the testing device 100 is used for high-speed gas impact testing, including a housing 1, a jet assembly, a clamping assembly 4, and a controller 5. The housing 1 has a sealed test chamber inside, and has a first sidewall 101 and a second sidewall 102 opposite each other in a first direction. The jet assembly includes a gas source 2, a jet unit 3, and a connecting pipe connecting the jet unit 3 and the gas source 2. The gas source 2 is located outside the housing 1, and the jet unit 3 is located inside the housing 1 and installed on the first sidewall 101. The jet unit 3 includes jet pipes distributed in multiple directions, and each jet pipe is provided with a control valve. The clamping assembly 4 is installed on the second sidewall 102, and includes a clamping part that is telescopically movable in a first direction and movable on the second sidewall 102, and a driving part that drives the clamping part to move. The clamping part is used to clamp the gas sensor to be tested. The controller 5 is electrically connected to the control valve and the driving part.

[0048] In use, the testing device 100 of this invention first installs the gas sensor on the clamping part. After checking the airtightness of the testing device 100, the controller 5 controls the opening and closing of different control valves on the jet pipes in different directions to change the direction of gas ejection from the jet unit 3, thereby changing the impact direction of the gas impact test. Then, the impact distance of the gas impact test is changed by altering the position and extension distance of the clamping part. By repeatedly testing the alarm time of the gas sensor in different positions facing gas impacts from different directions, the optimal installation position of the gas sensor at the work site is determined. The technical solution of this invention uses the controller 5 to control the opening and closing of different control valves on the jet pipes in different directions, as well as the position and extension distance of the clamping part, to change the impact direction and impact distance of the gas impact test.

[0049] It should be noted that this utility model does not limit the movement or extension / retraction of the clamping part, as long as it can adjust the distance to the first sidewall 101 in the first direction and move to different positions on the second sidewall 102. Please refer to [link / reference]. Figure 2 and Figure 3In an embodiment of this utility model, the clamping part includes a track device and a telescopic arm 41 disposed on the second sidewall 102; wherein, the track device includes two first tracks 42 that are opposite each other in a second direction and extend upward in a third direction, and a second track 43 that is movably connected to the two first tracks 42; one end of the telescopic arm 41 is movably connected to the second track 43, and the other end protrudes toward the first sidewall 101, and the other end of the telescopic arm 41 is used to clamp the gas sensor to be detected; the driving part includes a first driving part that drives the second track 43 to move in a third direction and a second driving part that drives the telescopic arm 41 to move in a second direction on the second track 43. That is to say, the clamping part of this utility model includes a track device and a telescopic arm 41 disposed on the second sidewall 102, the second track 43 can move in a third direction along the two first tracks 42 under the drive of the driving part, and the telescopic arm 41 can move in a second direction along the second track 43 under the drive of the driving part, thereby realizing the movement of the clamping part on the second sidewall 102. The telescopic arm 41 is equipped with a cylinder structure and a hook structure. The distance between the hook structure and the first sidewall 101 is changed by the extension and retraction of the piston of the cylinder structure, thereby adjusting the position of the gas sensor fixed on the hook structure. The specific structure of the telescopic arm 41 for its extension and retraction is not limited. In another embodiment of this invention, the telescopic arm 41 uses an electromagnet structure and a spring structure to achieve its extension and retraction. This invention also does not limit the specific structures of the first and second driving parts. Specifically, the first driving part includes a motor, a gear structure, and a rack disposed inside the first track 42. When the motor starts, the motor drives the gear structure to rotate. Since the gear structure meshes with the rack, the rotation of the gear is converted into linear motion on the rack. Because one end of the second track 43 is fixed to a moving part related to the rack, the second track 43 moves along a third direction along with the linear motion of the rack. The second driving part can also adopt the same structure to achieve the movement of the telescopic arm 41 along a second direction, which will not be elaborated further here.

[0050] After a gas impact test, the gas in the testing device 100 needs to be vented for the next test. In this embodiment of the invention, the testing device 100 further includes an exhaust pipe 6, which is installed on the second side wall 102 and connects the testing chamber to the outside. An exhaust pipe valve 7 is provided on the exhaust pipe 6. By setting the exhaust pipe 6, the gas is vented from the testing chamber, and the exhaust pipe valve 7 is closed during the test to ensure the sealing of the testing chamber. For ease of operation, the controller 5 can also be electrically connected to the exhaust pipe valve 7 to automate the entire test.

[0051] The gas discharged after the test may pollute the air or pose other safety hazards. Therefore, in this embodiment of the invention, a gas recovery device is provided at the end of the exhaust pipe 6 extending out of the test device 100. It should be noted that in this embodiment of the invention, the gas recovery device is not limited. It can be used to convert the test gas into other forms of energy or matter through a reaction, or it can be collected and reintroduced into the gas source 2 for reuse if its composition is not affected.

[0052] It should be noted that this invention does not limit the specific direction of the multiple jet pipes in the jet unit 3, as long as the direction of the gas ejected from the different jet pipes is different. In the embodiments of this invention, the multiple jet pipes include a first jet pipe 31 along a first direction and multiple second jet pipes 32 along a second direction; the control valve includes a first control valve 8 disposed on the first jet pipe 31 and a second control valve 9 disposed on the second jet pipe 32. That is to say, this invention changes the specific direction of gas ejection by setting a first jet pipe 31 along the first direction and multiple second jet pipes 32 along the second direction. It should be noted that multiple first control valves 8 and second control valves 9 can be opened simultaneously to more precisely control the direction of gas ejection and more accurately simulate the gas ejection situation when a gas pipeline leaks in a real scenario, thus obtaining more accurate experimental data.

[0053] During the test, gas needs to be continuously supplied to the jet unit 3 for it to spray. In this embodiment of the present invention, the connecting pipeline includes a gas distribution pipeline 10, which is connected to the jet assembly through a gas supply branch pipe 11; the gas source 2 includes a gas storage tank 21, which is connected to the gas distribution pipeline 10 through a gas supply main pipe 12; wherein, a third control valve 13 is provided on the gas supply branch pipe 11, and a fourth control valve 14 is provided on the gas supply main pipe 12; the controller 5 is electrically connected to the third control valve 13 and the fourth control valve 14. In other words, the test gas is stored in the gas storage tank 21. When a gas test is required, the fourth control valve 14 is opened, and the gas enters the gas distribution pipeline 10 through the main gas supply pipe 12. The third control valve 13 is then opened, and the gas enters the jet assembly through the gas supply branch pipe 11. This ensures that the jet assembly can continuously output gas during the test. Furthermore, for ease of operation, both the third control valve 13 and the fourth control valve 14 are electrically connected to the controller 5. In another embodiment of this invention, to prevent the control valves from losing control due to a malfunction of the controller 5, a manual valve is also installed on the main gas supply pipe 12. This allows the operator to close the manual valve in case of a controller malfunction, eliminating the safety hazard.

[0054] During the experiment, a single chamber 1 has low testing efficiency. To obtain test data more efficiently and intuitively, in this embodiment of the invention, multiple chambers 1 are provided, and correspondingly, multiple jetting components and clamping components 4 are provided. Multiple gas supply branches 11 are provided on the gas distribution pipe 10, and each gas supply branch 11 is connected to a jetting component inside a different chamber 1. In other words, by providing multiple chambers 1 and multiple gas supply branches 11 on the gas distribution pipe 10 to supply test gas to the jetting components inside each different chamber 1, multiple sets of tests can be conducted simultaneously, improving testing efficiency and allowing for comparison of multiple sets of test data, resulting in a more intuitive understanding.

[0055] During the test, it is also necessary to measure the volume of the ejected gas. In this embodiment of the invention, a flow meter 15 is installed on the gas supply branch pipe 11. By measuring the velocity of the ejected gas, and then based on the test time and the cross-sectional area of ​​the pipe, the volume of the ejected gas can be obtained.

[0056] To prevent gas leakage caused by the gas distribution pipeline 10 cracking due to excessive pressure during the experiment, in this embodiment of the invention, a pressure gauge 16 and a pressure relief pipeline 17 are installed on the gas distribution pipeline 10. The pressure relief pipeline 17 connects the inside of the gas distribution pipeline 10 to the outside, and a pressure relief valve 18 is installed on the pressure relief pipeline 17. The controller 5 is electrically connected to the pressure relief valve 18. By installing the pressure gauge 16 on the gas distribution pipeline 10 to monitor the pressure inside the gas distribution pipeline 10 in real time, when the pressure is too high, the pressure relief valve 18 can be opened to release the pressure and prevent the gas distribution pipeline 10 from cracking due to excessive gas pressure. For ease of operation, the controller 5 is electrically connected to the pressure relief valve 18. At the same time, the gas recovery device in the above embodiment can also be installed at the end of the pressure relief pipeline 17 that connects to the outside to avoid environmental pollution.

[0057] This utility model also proposes a high-speed gas impact test device for hydrogen sensors. The high-speed gas impact test device for hydrogen sensors includes a test device 100. The specific structure of the test device 100 is as described in the above embodiments. Since this high-speed gas impact test device for hydrogen sensors adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0058] The testing device 100 includes a housing 1, a jet assembly, a clamping assembly 4, and a controller 5. The housing 1 has a sealed testing chamber inside and has a first sidewall 101 and a second sidewall 102 opposite each other in a first direction. The jet assembly includes a gas source 2, a jet unit 3, and a connecting pipe connecting the jet unit 3 and the gas source 2. The gas source 2 is located outside the housing 1, and the jet unit 3 is located inside the housing 1 and installed on the first sidewall 101. The jet unit 3 includes jet pipes distributed in multiple directions, each jet pipe having a control valve. The clamping assembly 4 is installed on the second sidewall 102 and includes a clamping part that is telescopically movable in a first direction and movable on the second sidewall 102, and a driving part that drives the clamping part to move. The clamping part is used to clamp the gas sensor to be tested. The controller 5 is electrically connected to the control valve and the driving part. Correspondingly, the gas sensor includes a hydrogen sensor.

[0059] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A testing apparatus for high-speed gas impact testing, characterized in that, include: The housing has a sealed test chamber inside, and the housing has a first sidewall and a second sidewall opposite each other in a first direction; The jet assembly includes an air source, a jet unit, and a connecting pipe connecting the jet unit and the air source. The air source is located outside the housing, the jet unit is located inside the housing and installed on the first side wall, and the jet unit includes jet pipes distributed in multiple directions, each of which is provided with a control valve. A clamping assembly is mounted on the second sidewall. The clamping assembly includes a clamping part that is telescopically movable in a first direction and movable on the second sidewall, and a driving part that drives the clamping part to move. The clamping part is used to clamp the gas sensor to be detected. as well as, The controller is electrically connected to the control valve and the drive unit.

2. The testing apparatus as described in claim 1, characterized in that, The clamping part includes a track device and a telescopic arm disposed on the second side wall; The track device includes two first tracks that are opposite each other in a second direction and extend upward along a third direction, and a second track that is movably connected to the two first tracks; One end of the telescopic arm is movably connected to the second track, and the other end protrudes toward the first sidewall. The other end of the telescopic arm is used to clamp the gas sensor to be detected. The drive unit includes a first drive unit that drives the second track to move along a third direction and a second drive unit that drives the telescopic arm to move along a second direction on the second track.

3. The testing apparatus as described in claim 1, characterized in that, The testing device also includes an exhaust pipe, which is installed on the second side wall and connects the testing chamber to the outside. An exhaust pipe valve is provided on the exhaust pipe.

4. The testing apparatus as described in claim 3, characterized in that, A gas recovery device is installed at one end of the exhaust pipe that extends out of the test device.

5. The testing apparatus as described in claim 1, characterized in that, The plurality of jet pipes includes a first jet pipe along a first direction and a plurality of second jet pipes along a second direction; The control valve includes a first control valve disposed on the first jet pipe and a second control valve disposed on the second jet pipe.

6. The testing apparatus as described in claim 1, characterized in that, The connecting pipeline includes a gas distribution pipeline, which is connected to the jet assembly via a gas supply branch pipe. The gas source includes a gas storage tank, which is connected to the gas distribution pipeline via a gas supply main pipe. The gas supply branch pipe is equipped with a third control valve, and the gas supply main pipe is equipped with a fourth control valve. The controller is electrically connected to the third control valve and the fourth control valve.

7. The testing apparatus as described in claim 6, characterized in that, The housing is configured in multiple ways, and correspondingly, the jet assembly and the clamping assembly are configured in multiple ways; The gas distribution pipeline is provided with multiple gas supply branch pipes, which are respectively connected to the jet assembly inside multiple different boxes.

8. The testing apparatus as described in claim 6 or 7, characterized in that, A flow meter is installed on the gas supply branch pipe.

9. The testing apparatus as described in claim 6, characterized in that, The gas distribution pipeline is equipped with a pressure gauge and a pressure relief pipeline. The pressure relief pipeline connects the inside of the gas distribution pipeline to the outside. The pressure relief pipeline is equipped with a pressure relief valve. The controller is electrically connected to the pressure relief pipeline valve.

10. A high-speed gas impact testing device for a hydrogen sensor, characterized in that, Includes the testing apparatus as described in any one of claims 1 to 9.

Images