Hydrogen leakage detection equipment for hydrogen-powered vehicle

Abstract

The invention discloses hydrogen leakage detection equipment for a hydrogen-powered vehicle, and relates to the technical field of hydrogen leakage detection.The hydrogen leakage detection equipment comprises a first movable shell, a hydrogen leakage sensor is arranged at the front end of the first movable shell and installed on the upper portion of an installation table, and buffer shells are fixedly connected to the two sides of the installation table; a second rack is slidably connected to the interior of the buffer shell, the second rack is in meshed connection with a second gear, the second gear is fixedly connected with a worm, the worm is in meshed connection with a worm wheel, the worm wheel is rotatably connected with the buffer shell, and the worm wheel is fixedly connected with a first gear. The second rack moves to drive the first gear to rotate, and the first gear rotates to drive the buffer plate to move synchronously, so that the buffer pad is automatically controlled to press the two sides of the hydrogen leakage sensor in the installation process of the hydrogen leakage sensor, and automatic positioning and fixing of the hydrogen leakage sensor are achieved.

Description

Technical Field

[0001] This invention relates to the field of hydrogen leak detection technology, and in particular to a hydrogen leak detection device for hydrogen-powered vehicles. Background Technology

[0002] As pioneers in the new energy field, hydrogen-powered vehicles have garnered significant attention for their safety, particularly regarding hydrogen leakage. To address this, a highly efficient hydrogen leakage detection device has been developed. Specifically designed for hydrogen-powered vehicles, this device employs high-sensitivity sensor technology to quickly and accurately detect even minute hydrogen leaks inside or around the vehicle. It maintains stable detection performance even under complex operating conditions. Equipped with real-time monitoring and early warning functions, it immediately triggers an alarm upon detecting excessive hydrogen concentration and transmits the information to the driver or monitoring center via wireless communication, enabling timely intervention and prevention of potential hazards. The device is compact, easy to install, and consumes little energy, making it a crucial auxiliary tool for ensuring the safe operation of hydrogen-powered vehicles and promoting the healthy development of the hydrogen energy industry.

[0003] In actual use, existing devices are prone to loosening, displacement, or even slight deformation of the connection structure between the sensor and the mounting base due to the continuous mechanical vibration generated by vehicle movement. This leads to a decrease in detection accuracy and response delay. Therefore, a hydrogen leakage detection device for hydrogen-powered vehicles is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the connection structure between the sensor and the mounting base being prone to loosening, displacement, or even slight deformation due to long-term high-frequency impact caused by continuous mechanical vibration generated during vehicle operation, resulting in decreased detection accuracy and response delay. Therefore, this invention proposes a hydrogen leakage detection device for hydrogen-powered vehicles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A hydrogen leak detection device for hydrogen-powered vehicles includes a first movable housing. A hydrogen leak sensor is disposed at the front end of the first movable housing. The hydrogen leak sensor is mounted on the upper part of a mounting platform. Buffer housings are fixedly connected to both sides of the mounting platform. A second rack is slidably connected inside the buffer housing. The second rack is meshed with a second gear. The second gear is fixedly connected to a worm. The worm is meshed with a worm wheel. The worm wheel is rotatably connected to the buffer housing. A first gear is fixedly connected to the worm wheel. The first gear is meshed with a first rack. A buffer plate is fixedly connected to the first rack. A buffer pad is fixedly connected to the front end of the buffer plate.

[0006] During the installation of the hydrogen leak sensor, the sensor gradually approaches the mounting platform. This approach causes the second rack to move, which in turn rotates the first gear. The rotation of the first gear moves the buffer plate, automatically pressing and fixing the side of the hydrogen leak sensor to ensure installation stability. The buffer pad's structure also provides shock absorption during vehicle movement. The first movable housing is an embedded miniature structure with a small footprint. It is made of explosion-proof materials such as stainless steel and aluminum alloy, and coated with a polytetrafluoroethylene (PTFE) anti-corrosion layer. The motor is explosion-proof, and the cable connectors are sealed.

[0007] The above technical solution further includes: The buffer housing is fixedly connected to a limiting groove, and the limiting groove is slidably connected to a second rack.

[0008] A return spring is fixedly connected to the bottom of the second rack, and a buffer housing is fixedly connected to the end of the return spring away from the second rack.

[0009] A transmission groove is fixedly connected to the upper part of the mounting platform, and a first rack is slidably connected inside the transmission groove.

[0010] A second motor is located on one side of the first movable housing, and a control module is located near the second motor. A first moving component is located at the output end of the second motor. The control module can control the start of the first and second motors, thereby adjusting the horizontal and vertical positions of the hydrogen leak sensor. The control module stores common leak points such as the end plate seals of the fuel cell stack and pipe interfaces. The control module can directly call preset position commands to quickly locate the hydrogen leak sensor. The control module can also control the hydrogen leak sensor to patrol along the preset points, thereby ensuring the detection range of the hydrogen leak sensor.

[0011] The first moving component includes a first transmission wheel located at the output end of a second motor, the first transmission wheel being driven by a transmission belt, the transmission belt being driven by a second transmission wheel, and a second moving housing being fixedly connected to the upper part of the transmission belt.

[0012] The bottom of the second movable housing is fixedly connected to a first slider, the first slider is slidably connected to a first slide rail, and the first slide rail is fixedly connected to the first movable housing.

[0013] The upper part of the second movable housing is provided with a first motor, and the output end of the first motor is provided with a second movable component. The second movable component includes a threaded rod provided at the output end of the first motor, and the threaded rod is threadedly connected to a mounting platform.

[0014] The rear end of the mounting platform is fixedly connected to a second slider, the second slider is slidably connected to a second slide rail, and the second slide rail is fixedly connected to the second movable housing.

[0015] The present invention has the following beneficial effects: 1. In this invention, during the installation of the hydrogen leak sensor, the bottom surface of the hydrogen leak sensor is pressed tightly against the mounting platform. During this process, the bottom of the hydrogen leak sensor can drive the second rack to move. The movement of the second rack drives the first gear to rotate, and the rotation of the first gear can drive the buffer plate to move synchronously. Thus, during the installation of the hydrogen leak sensor, the buffer pad is automatically controlled to press the two sides of the hydrogen leak sensor, realizing the automatic positioning and fixation of the hydrogen leak sensor. At the same time, the structural characteristics of the buffer pad can also ensure that the mechanical vibration of the hydrogen leak sensor during vehicle movement is reduced, thereby improving the service life of the hydrogen leak sensor.

[0016] 2. In this invention, the first movable housing adopts an embedded micro structure, which is compact and occupies less space. Moreover, the control module located near the second motor can control the transmission of the first and second movable components through the first and second motors, thereby adjusting the detection position of the hydrogen leakage sensor. Furthermore, the control module stores common leakage points such as the fuel cell stack end plate seal and pipe interfaces. The control module can directly call preset position commands to achieve rapid positioning. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a hydrogen leak detection device for hydrogen-powered vehicles proposed in this invention; Figure 2 This is a rear view of the overall structure of the device in this invention; Figure 3 This is a schematic diagram of the connection relationship of the second movable housing in this invention; Figure 4 This is a schematic diagram of the connection relationship of the mounting platform in this invention; Figure 5 This is a schematic diagram of the internal structure of the mounting platform in this invention; Figure 6 This is a schematic diagram of the internal structure of the buffer shell in this invention.

[0018] In the diagram: 1. First movable housing; 2. First transmission wheel; 3. Transmission belt; 4. First slide rail; 5. Second transmission wheel; 6. Hydrogen leakage sensor; 7. Second movable housing; 8. First motor; 9. Threaded rod; 10. Second motor; 11. Control module; 12. First slider; 13. Second slide rail; 14. Second slider; 15. Mounting platform; 16. Buffer housing; 17. Buffer plate; 18. Transmission groove; 19. First gear; 20. First rack; 21. Buffer pad; 22. Second rack; 23. Limiting groove; 24. Return spring; 25. Second gear; 26. Worm; 27. Worm wheel. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 like Figures 1-6 As shown, a hydrogen leak detection device for hydrogen-powered vehicles includes a first movable housing 1. A hydrogen leak sensor 6 is disposed at the front end of the first movable housing 1. The hydrogen leak sensor 6 is mounted on the upper part of the mounting platform 15. Buffer housings 16 are fixedly connected to both sides of the mounting platform 15. A second rack 22 is slidably connected inside the buffer housing 16. The second rack 22 is meshed with a second gear 25. The second gear 25 is fixedly connected to a worm 26. The worm 26 is meshed with a worm wheel 27. The worm wheel 27 is rotatably connected to the buffer housing 16. The worm wheel 27 is fixedly connected to a first gear 19. The first gear 19 is meshed with a first rack 20. The first rack 20 is fixedly connected to a buffer plate 17. A buffer pad 21 is fixedly connected to the front end of the buffer plate 17.

[0021] During the installation of the hydrogen leak sensor 6, the hydrogen leak sensor 6 gradually approaches the mounting platform 15. During this approach, the hydrogen leak sensor 6 drives the second rack 22 to move, which in turn drives the first gear 19 to rotate. The rotation of the first gear 19 drives the buffer plate 17 to move, thereby automatically driving the buffer pad 21 to press and fix the side of the hydrogen leak sensor 6 during the installation process, ensuring the installation stability of the hydrogen leak sensor 6. At the same time, the structural characteristics of the buffer pad 21 can also provide shock absorption during vehicle movement. The first moving housing 1 is an embedded micro structure with a small space occupation. The first moving housing 1 is made of explosion-proof materials such as stainless steel and aluminum alloy, and the surface is coated with a polytetrafluoroethylene anti-corrosion layer. The motor is explosion-proof, and the cable joint is sealed.

[0022] A limiting groove 23 is fixedly connected inside the buffer housing 16. A second rack 22 is slidably connected to the limiting groove 23. A return spring 24 is fixedly connected to the bottom of the second rack 22. The end of the return spring 24 away from the second rack 22 is fixedly connected to the buffer housing 16. A transmission groove 18 is fixedly connected to the upper part of the mounting platform 15. A first rack 20 is slidably connected inside the transmission groove 18.

[0023] In this embodiment, during the installation of the hydrogen leak sensor 6, the bottom surface of the hydrogen leak sensor 6 is pressed tightly against the mounting platform 15, thereby achieving fixation with bolts and nuts. During this process, the bottom of the hydrogen leak sensor 6 can drive the second rack 22 to move. When the second rack 22 moves, it compresses and deforms the return spring 24. The return spring 24 can return the second rack 22 to its original position after the hydrogen leak sensor 6 is removed. During the movement of the second rack 22, the slidingly connected limiting groove 23 can ensure the stability of the second rack 22 during movement. The movement of the second rack 22 can drive the meshing second gear 25 to rotate. The rotation of the second gear 25 drives the fixedly connected worm 26 to rotate. The rotation of the worm 26 drives the meshing worm wheel 27 to rotate. The rotation of the worm wheel 27 can drive the fixedly connected first gear 19 to rotate. The rotation of the first gear 19 can drive the meshing first rack 20 to move.

[0024] During the movement of the first rack 20, the sliding connection of the transmission groove 18 ensures the stability of the first rack 20 during movement. The movement of the first rack 20 can drive the fixed connection of the buffer plate 17 to move synchronously. During the installation of the hydrogen leak sensor 6, the buffer pad 21 is automatically controlled to press the two sides of the hydrogen leak sensor 6, realizing the automatic positioning and fixation of the hydrogen leak sensor 6. At the same time, the structural characteristics of the buffer pad 21 can also ensure that the mechanical vibration of the hydrogen leak sensor 6 during vehicle movement is reduced, thereby improving the service life of the hydrogen leak sensor 6.

[0025] Example 2 like Figures 1-6 As shown, a second motor 10 is provided on one side of the first movable housing 1, and a control module 11 is provided near the second motor 10. A first moving component is provided at the output end of the second motor 10. The control module 11 can control the first motor 8 and the second motor 10 to start, thereby realizing the adjustment of the horizontal and vertical positions of the hydrogen leak sensor 6. The control module 11 stores common leak points such as the end plate seal of the fuel cell stack and the pipe interface. The control module 11 can directly call the preset position command to enable the hydrogen leak sensor 6 to be quickly positioned. The control module 11 controls the hydrogen leak sensor 6 to inspect along the preset points, thereby ensuring the detection range of the hydrogen leak sensor 6.

[0026] The first moving component includes a first transmission wheel 2 located at the output end of the second motor 10, a transmission belt 3 connected to the first transmission wheel 2, a second transmission wheel 5 connected to the transmission belt 3, a second moving housing 7 fixedly connected to the upper part of the transmission belt 3, a first slider 12 fixedly connected to the bottom of the second moving housing 7, a first slide rail 4 slidably connected to the first slider 12, and a fixed connection between the first slide rail 4 and the first moving housing 1. A first motor 8 is located at the upper part of the second moving housing 7, and a second moving component is located at the output end of the first motor 8. The second moving component includes a threaded rod 9 located at the output end of the first motor 8, a mounting platform 15 threadedly connected to the threaded rod 9, a second slider 14 fixedly connected to the rear end of the mounting platform 15, a second slide rail 13 slidably connected to the second slider 14, and a fixed connection between the second slide rail 13 and the second moving housing 7.

[0027] In this embodiment, the first movable housing 1 adopts an embedded micro structure, which is compact and occupies little space. Moreover, the control module 11 located near the second motor 10 can also drive the first motor 8 and the second motor 10 to start. The first motor 8 can drive the threaded rod 9 to rotate, and the rotation of the threaded rod 9 can drive the threaded mounting platform 15 to move. The movement of the mounting platform 15 can drive the hydrogen leakage sensor 6 to move in the vertical direction. The second motor 10 can drive the first transmission wheel 2 to rotate, and the rotation of the first transmission wheel 2 can drive the transmission belt 3 to move. The transmission belt 3 can drive the second movable housing 7 to move, thereby realizing the horizontal adjustment of the hydrogen leakage sensor 6.

[0028] The detection position of the hydrogen leak sensor 6 can be adjusted by the first motor 8 and the second motor 10. Moreover, the control module 11 stores common leak points such as the end plate seal of the fuel cell stack and the pipe interface. The control module 11 can directly call the preset position command to achieve rapid positioning. After the vehicle stops, the control module 11 can periodically control the hydrogen leak sensor 6 to move and inspect between various leak points of the fuel cell stack, which can effectively ensure the detection effect of the hydrogen leak sensor 6.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydrogen leak detection device for hydrogen-powered vehicles, comprising a first movable housing (1), characterized in that, A hydrogen leak sensor (6) is provided at the front end of the first movable housing (1). The hydrogen leak sensor (6) is installed on the upper part of the mounting platform (15). A buffer housing (16) is fixedly connected to both sides of the mounting platform (15). A second rack (22) is slidably connected inside the buffer housing (16). The second rack (22) is meshed with a second gear (25). The second gear (25) is fixedly connected with a worm (26). The worm (26) is meshed with a worm wheel (27). The worm wheel (27) is rotatably connected to the buffer housing (16). The worm wheel (27) is fixedly connected with a first gear (19). The first gear (19) is meshed with a first rack (20). The first rack (20) is fixedly connected with a buffer plate (17). A buffer pad (21) is fixedly connected to the front end of the buffer plate (17). During the installation of the hydrogen leak sensor (6), the hydrogen leak sensor (6) gradually approaches the mounting platform (15) from the ground. During the approach process, the hydrogen leak sensor (6) drives the second rack (22) to move, which in turn drives the first gear (19) to rotate. The rotation of the first gear (19) drives the buffer plate (17) to move, thereby automatically driving the buffer pad (21) to press and fix the side of the hydrogen leak sensor (6) during the installation process, ensuring the installation stability of the hydrogen leak sensor (6). At the same time, the structural characteristics of the buffer pad (21) can also provide shock absorption during vehicle operation.

2. The hydrogen leak detection device for hydrogen-powered vehicles according to claim 1, characterized in that, The buffer housing (16) is fixedly connected to a limiting groove (23), and the limiting groove (23) is slidably connected to a second rack (22).

3. The hydrogen leak detection device for hydrogen-powered vehicles according to claim 1, characterized in that, A return spring (24) is fixedly connected to the bottom of the second rack (22), and a buffer housing (16) is fixedly connected to the end of the return spring (24) away from the second rack (22).

4. The hydrogen leak detection device for hydrogen-powered vehicles according to claim 1, characterized in that, The upper part of the mounting platform (15) is fixedly connected to a transmission groove (18), and a first rack (20) is slidably connected inside the transmission groove (18).

5. The hydrogen leak detection device for hydrogen-powered vehicles according to claim 1, characterized in that, A second motor (10) is provided on one side of the first movable housing (1), and a control module (11) is provided near the second motor (10). A first movable component is provided at the output end of the second motor (10).

6. The hydrogen leak detection device for hydrogen-powered vehicles according to claim 5, characterized in that, The first moving component includes a first transmission wheel (2) provided at the output end of the second motor (10), the first transmission wheel (2) is connected to a transmission belt (3), the transmission belt (3) is connected to a second transmission wheel (5), and a second moving housing (7) is fixedly connected to the upper part of the transmission belt (3).

7. A hydrogen leak detection device for hydrogen-powered vehicles according to claim 6, characterized in that, The bottom of the second movable housing (7) is fixedly connected to a first slider (12), the first slider (12) is slidably connected to a first slide rail (4), and the first slide rail (4) is fixedly connected to the first movable housing (1).

8. A hydrogen leak detection device for hydrogen-powered vehicles according to claim 7, characterized in that, The upper part of the second movable housing (7) is provided with a first motor (8), and the output end of the first motor (8) is provided with a second movable component. The second movable component includes a threaded rod (9) provided at the output end of the first motor (8), and the threaded rod (9) is threadedly connected to a mounting platform (15).

9. A hydrogen leak detection device for hydrogen-powered vehicles according to claim 8, characterized in that, The second slider (14) is fixedly connected to the rear end of the mounting platform (15), and the second slider (14) is slidably connected to the second slide rail (13). The second slide rail (13) is fixedly connected to the second movable housing (7).

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