Hydrogen leakage detection device

Abstract

The hydrogen leakage detection device comprises an inspection vehicle, a first telescopic assembly, a lifting assembly, a second telescopic assembly, a nitrogen conveying assembly, two winding assemblies and a gas pressurization assembly, the inspection vehicle comprises a vehicle body, and the first telescopic assembly is connected with a detection assembly and used for adjusting the position of the detection assembly in the horizontal direction; the lifting assembly is connected with the first telescopic assembly so that the first telescopic assembly can move in the vertical direction. The second telescopic assembly is arranged on the vehicle body, connected with the lifting assembly and used for adjusting the position of the lifting assembly in the vertical direction; the nitrogen conveying assembly is arranged on the vehicle body and connected with the detection assembly, and the nitrogen conveying assembly comprises a gas feeding pipe and is used for injecting nitrogen into the containing box through the gas feeding pipe when the detection assembly detects that hydrogen in the hydrogen cylinder leaks.

Description

Technical Field

[0001] This application relates to the field of hydrogen leak detection technology, and in particular to a hydrogen leak detection device. Background Technology

[0002] Hydrogen cylinders are typically stored in isolated boxes in warehouses. At room temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, highly flammable, and poorly soluble gas in water. Hydrogen leakage from cylinders poses an extremely dangerous hazard.

[0003] Currently, hydrogen leaks can be detected by installing multiple hydrogen detectors in the top corners and around the perimeter of the warehouse. However, this method has several drawbacks. First, if a hydrogen leak is detected and the warehouse area is large, it is difficult to pinpoint the exact location, reducing the efficiency of accident handling. Second, it requires workers to enter the warehouse for inspection, which carries a high risk. Utility Model Content

[0004] The purpose of this application is to provide a hydrogen leak detection device to solve the problems of existing detection equipment, such as difficulty in accurate location, low safety factor, and inconvenience in storage.

[0005] The technical solution to the above-mentioned technical problems in this application is as follows:

[0006] A hydrogen leak detection device includes a detection component for detecting hydrogen leaks from hydrogen cylinders inside a storage box, and further includes:

[0007] Inspection vehicle, including the vehicle body;

[0008] The first telescopic component is connected to the detection component and is used to adjust the position of the detection component in the horizontal direction;

[0009] A lifting assembly, connected to a first telescopic assembly, is used to enable the first telescopic assembly to move in the vertical direction;

[0010] The second telescopic component is installed on the vehicle body and connected to the lifting component, and is used to adjust the position of the lifting component in the vertical direction;

[0011] A nitrogen delivery assembly is installed on the vehicle body and connected to the detection assembly. The nitrogen delivery assembly includes a gas delivery pipe, which is used to inject nitrogen into the placement box when the detection assembly detects a hydrogen leak in the hydrogen cylinder.

[0012] Two winding assemblies, one of which is rotatably mounted on the first telescopic assembly about an axis extending in the vertical direction, and the other of which is rotatably mounted on the vehicle body about an axis extending in the horizontal direction, for winding the air supply pipe.

[0013] A gas pressurization component is mounted on the second telescopic component and connected to the first telescopic component and the nitrogen delivery component to increase the pressure inside the nitrogen delivery component so that the nitrogen flows faster in the gas delivery pipe.

[0014] Furthermore, the first telescopic component includes a mounting body, a movable plate, and a first bolt. The mounting body is provided with a slide groove and a threaded hole communicating with the slide groove. The movable plate is slidably connected to the inner wall of the slide groove. The first bolt is threadedly connected to the inner wall of the threaded hole. The movable plate is fixedly connected to the detection component.

[0015] The second telescopic component includes a mounting base and an adjusting base. The mounting base is fixedly connected to the vehicle body and has an adjusting groove. The adjusting base is slidably connected to the inner wall of the adjusting groove. The mounting base has multiple mounting holes spaced vertically on both sides. The adjusting base has a fixing plate on both sides and a through hole on the fixing plate. The mounting holes and the through holes are threadedly connected by a second bolt. The adjusting base has a receiving groove and a lifting component connected to the mounting body is provided in the receiving groove.

[0016] Furthermore, the detection assembly includes a detection box and a detector, with one end of the detector connected to the inner wall of the detection box and a movable plate fixedly connected to the outer wall of the detection box;

[0017] The nitrogen delivery assembly also includes a blower, an exhaust pipe, and a nitrogen tank. The blower is connected to the inner wall of the detection box, one end of the exhaust pipe is connected to the blower, the nitrogen tank is fixedly connected to the vehicle body, and the two ends of the delivery pipe are connected to the blower and the nitrogen tank, respectively.

[0018] Furthermore, both take-up components include:

[0019] The take-up plate has a rotating column and a winding part fixedly connected to its two opposite surfaces, respectively; and,

[0020] The partition is spirally extended and is fixedly connected to the winding part for placing the air supply pipe;

[0021] Among them, the rotating columns of the two winding components are rotatably connected to the mounting body and the vehicle body respectively, and the air supply pipe is spirally wound on the outer surface of the winding part and can abut against the partition.

[0022] Furthermore, the winding section includes two winding rods fixedly connected to the take-up plate and spaced apart, with the air supply pipe spirally winding the two winding rods.

[0023] Furthermore, the lifting assembly includes a cylinder fixedly connected to the inner wall of the receiving groove, the telescopic end of the cylinder being fixedly connected to the mounting body, and the gas pressurization assembly includes:

[0024] Nitrogen storage tank, fixedly connected to one side of the mounting base;

[0025] The pressure cylinder is fixedly connected to the other side of the mounting base;

[0026] The push rod has one end fixedly connected to the mounting body, and the other end extends into the pressure cylinder and is fixedly connected to a sealing plug. The sealing plug is slidably connected to the inner wall of the pressure cylinder.

[0027] The gas supply pipe connects to a nitrogen storage tank at one end and a pressurizing cylinder at the other end; a first control valve is installed on the gas supply pipe; and...

[0028] The pressurization pipe is connected to a pressurization cylinder at one end and a nitrogen cylinder at the other end. A second control valve is installed on the pressurization pipe.

[0029] Furthermore, the cross-sectional diameter of the winding rod is larger than the diameter of the air supply pipe.

[0030] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0031] When the inspection vehicle patrols the warehouse, if a hydrogen leak is detected, an alarm is sent to the control center via the vehicle's signal transmission equipment, along with location information. This allows staff to promptly identify the leak location, improving handling efficiency. By manipulating the first telescopic component, second telescopic component, and lifting component, the height of the first telescopic component can be lowered, allowing the detection component to be moved horizontally closer to the first telescopic and lifting components, facilitating the storage of the entire hydrogen leak detection device. The nitrogen delivery component delivers nitrogen to the placement box, diluting the hydrogen concentration in the leak area, reducing the risk of explosion, and buying time for handling the leak, thus improving safety. The winding component can accommodate a longer gas delivery pipe, facilitating its storage and further saving storage space for the entire hydrogen leak detection device. The gas pressurization component applies pressure to the nitrogen delivery component, accelerating the flow of nitrogen and rapidly injecting it into the placement box, allowing for the injection of more nitrogen simultaneously, further enhancing safety when handling hydrogen leaks. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a three-dimensional structural diagram of the hydrogen leak detection device of this application;

[0034] Figure 2 This is a structural schematic diagram of the first telescopic component, the detection component, and the fan in this application;

[0035] Figure 3This is an exploded structural diagram of the second telescopic component and the lifting component of this application;

[0036] Figure 4 This is a cross-sectional structural diagram of the pressure cylinder of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. First telescopic assembly; 11. Movable plate; 12. Mounting body; 121. Slide groove; 13. First bolt; 2. Second telescopic assembly; 21. Adjusting seat; 22. Mounting seat; 23. Mounting hole; 24. Fixing plate; 241. Second bolt; 242. Through hole; 3. Lifting assembly; 31. Cylinder; 4. Nitrogen delivery assembly; 41. Nitrogen tank; 42. Exhaust pipe; 43. Fan; 44. Gas supply pipe; 5. Winding assembly; 51. Winding plate; 52. Partition plate; 53. Winding part; 54. Rotating column; 6. Gas pressurization assembly; 61. Nitrogen storage tank; 62. Pressurization cylinder; 63. Pressurization pipe; 631. Second control valve; 64. Gas supply pipe; 641. First control valve; 65. Push rod; 66. Sealing plug; 7. Inspection vehicle; 8. Detection assembly; 81. Detection box; 82. Detector.

[0039] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0041] Please see Figures 1 to 4 This application discloses a hydrogen leak detection device, including a detection component 8 for detecting hydrogen leaks from hydrogen cylinders inside a storage box, and further comprising:

[0042] Inspection vehicle 7, including the vehicle body;

[0043] The first telescopic component 1 is connected to the detection component 8 and is used to adjust the position of the detection component 8 in the horizontal direction;

[0044] The lifting component 3 is connected to the first telescopic component 1, so that the first telescopic component 1 can move in the vertical direction;

[0045] The second telescopic component 2 is installed on the vehicle body and connected to the lifting component 3, and is used to adjust the position of the lifting component 3 in the vertical direction;

[0046] Nitrogen delivery assembly 4 is mounted on the vehicle body and connected to detection assembly 8. Nitrogen delivery assembly 4 includes a gas delivery pipe 44, which is used to inject nitrogen into the placement box when the detection assembly 8 detects a hydrogen leak in the hydrogen cylinder.

[0047] Two winding assemblies 5, one of which is rotatably mounted on the first telescopic assembly 1 about an axis extending in the vertical direction, and the other of which is rotatably mounted on the vehicle body about an axis extending in the horizontal direction, for winding the air supply pipe 44.

[0048] The gas pressurization component 6 is disposed on the second telescopic component 2 and connected to the first telescopic component 1 and the nitrogen delivery component 4, so as to increase the pressure inside the nitrogen delivery component 4 and accelerate the flow of nitrogen in the gas delivery pipe 44.

[0049] The inspection vehicle 7 includes an AGV (Automated Guided Vehicle). The AGV's route can be pre-planned based on the terrain and structure of the hydrogen storage warehouse. The AGV can automatically move within the warehouse along a pre-set route via remote control. Equipped with cameras and a positioning system, the AGV can perform inspections within the hydrogen warehouse. Each storage box for hydrogen cylinders or tanks can be marked, and detection points can be set near each storage box along the pre-set route.

[0050] Before entering the warehouse, the first telescopic component 1 can be moved to adjust the horizontal position of the detection component 8 to adapt to the warehouse environment. The second telescopic component can be moved to adjust the vertical position of the detection component 8 to adapt to the warehouse environment, improving its adaptability. The inspection vehicle 7 travels through the warehouse along a preset route. Upon reaching a detection point, the lifting component 3 raises the first telescopic component 1, lifting the detection component 8 above the storage box to detect hydrogen leaks in the hydrogen cylinders inside. If no leak is detected, the inspection vehicle 7 continues to the next detection point. If a leak is detected, an alarm is first sent to the control center via the signal transmission equipment on the inspection vehicle 7, along with location information. This allows staff to promptly identify the leak location, improving handling efficiency.

[0051] After the inspection work of the inspection trolley is completed, by moving the first telescopic component 1, the second telescopic component 2 and the lifting component 3, the height of the first telescopic component 1 can be lowered, and the detection component 8 can be brought closer to the first telescopic component 1 and the lifting component 3 in the horizontal direction, so that the entire hydrogen leak detection device can be conveniently stored.

[0052] When detector 82 detects a hydrogen leak, nitrogen delivery assembly 4 activates, injecting nitrogen into the placement box through gas delivery pipe 44. This nitrogen injection dilutes the hydrogen concentration in the leak area, reducing the risk of explosion. As an inert gas, nitrogen effectively isolates oxygen and inhibits the formation of a hydrogen-air mixture, buying time for hydrogen leak response and improving safety.

[0053] The gas supply pipe 44 is wound around the winding assembly 5. When the position of the detection assembly 8 in the horizontal direction is changed, the winding assembly 5 on the first telescopic assembly 1 rotates, pulling out a portion of the gas supply pipe 44, and the remaining gas supply pipe 44 can be placed on the winding assembly 5. When the first telescopic assembly 1 rises, the winding assembly 5 on the vehicle body rotates, pulling out the gas supply pipe 44 of the corresponding length upwards. The setting of two winding assemblies 5, compared with telescopic pipes or corrugated pipes, allows for more material and specification choices for the gas supply pipe 44 to adapt to different gas and environmental conditions, improving the versatility of the gas supply pipe 44. Furthermore, compared with the material fatigue caused by long-term stretching of telescopic pipes, the winding assembly 5 for winding the gas supply pipe 44 can improve the service life of the gas supply pipe 44. Moreover, the stretching length of the telescopic pipe is limited, and the winding assembly 5 can accommodate a longer gas supply pipe 44, facilitating the storage and retrieval of the gas supply pipe 44, further saving the storage space occupied by the entire hydrogen leak detection device, and making the entire device easier to store.

[0054] When the detection component 8 is above the placement box, the lifting component 3 moves the first telescopic component 1 down, allowing the nitrogen injected by the nitrogen delivery component 4 to come into contact with more hydrogen. The gas pressurization component 6 will pressurize the nitrogen delivery component 4 to form a pressure difference and accelerate the flow of nitrogen and quickly inject it into the placement box, which can inject more nitrogen at the same time and further improve safety.

[0055] In a preferred embodiment, the present application may be further configured as follows: the first telescopic component 1 includes a mounting body 12, a movable plate 11 and a first bolt 13. The mounting body 12 is provided with a slide groove 121 and a threaded hole communicating with the slide groove 121. The movable plate 11 is slidably connected to the inner wall of the slide groove 121. The first bolt 13 is threadedly connected to the inner wall of the threaded hole. The movable plate 11 is fixedly connected to the detection component 8.

[0056] The second telescopic component 2 includes a mounting base 22 and an adjusting base 21. The mounting base 22 is fixedly connected to the vehicle body and has an adjusting groove. The adjusting base 21 is slidably connected to the inner wall of the adjusting groove. The mounting base 22 has multiple mounting holes 23 spaced vertically on both sides. The adjusting base 21 has a fixing plate 24 on both sides. The fixing plate 24 has a through hole 242. The mounting holes 23 and the through hole 242 are threadedly connected by a second bolt 241. The adjusting base 21 has a receiving groove, and the lifting component 3 connected to the mounting body 12 is provided in the receiving groove.

[0057] Pulling the movable plate 11 outwards towards the slide groove 121, inserting the first bolt 13 into the threaded hole, and rotating the first bolt 13 to press it against the movable plate 11 allows for horizontal adjustment of the detection component 8. Moving the adjusting seat 21 within the adjusting groove aligns the through hole 242 with the mounting hole 23. Inserting the second bolt 241 into both the through hole 242 and the mounting hole 23, and rotating the second bolt 241, fixes the adjusting seat 21 to the desired position on the mounting seat 22, thereby adjusting the vertical position of the first telescopic component 1.

[0058] In a preferred embodiment, the present application may be further configured such that: the detection component 8 includes a detection box 81 and a detector 82, one end of the detector 82 is connected to the inner wall of the detection box 81, and the outer wall of the detection box 81 is fixedly connected to the movable plate 11;

[0059] The nitrogen delivery assembly 4 also includes a blower 43, an exhaust pipe 42, and a nitrogen tank 41. The blower 43 is connected to the inner wall of the detection box 81, one end of the exhaust pipe 42 is connected to the blower 43, the nitrogen tank 41 is fixedly connected to the vehicle body, and the two ends of the delivery pipe 44 are connected to the blower 43 and the nitrogen tank 41, respectively.

[0060] When the detector 82 detects a hydrogen leak, it starts the blower 43 to create a negative pressure in the gas supply pipe 44, which in turn draws the nitrogen in the nitrogen tank 41 into the exhaust pipe 42, and then delivers the nitrogen to the storage box through the exhaust pipe 42 to dilute the leaked hydrogen.

[0061] In a preferred embodiment, this application can be further configured such that both winding components 5 include:

[0062] The take-up plate 51 has a rotating column 54 and a winding part 53 fixedly connected to its two opposite surfaces, respectively; and,

[0063] The partition 52 is spirally extended and is fixedly connected to the winding part 53 for placing the air supply pipe 44;

[0064] Among them, the rotating columns 54 of the two winding components 5 are rotatably connected to the mounting body 12 and the vehicle body respectively, and the air supply pipe 44 is spirally wound on the outer surface of the winding part 53 and can abut against the partition 52.

[0065] By setting the spiral baffle 52, a longer gas delivery pipe 44 can be placed. When nitrogen is delivered in the gas delivery pipe 44, it can prevent the multiple layers of the longer gas delivery pipe 44 wrapped in the winding step from squeezing each other in the vertical direction, thus affecting the delivery of nitrogen.

[0066] In a preferred embodiment, this application can be further configured such that: the winding section 53 includes two winding rods fixedly connected to the take-up plate 51 and spaced apart, and the air supply pipe 44 is spirally wound around the two winding rods. The air supply pipe 44 can be a flexible hose. By setting two winding rods spaced a certain distance apart, when nitrogen gas passes through the air supply pipe 44, the air supply pipe 44 will gradually expand and become larger through the gap between the two winding rods, which can reduce the compression of the air supply pipe 44 by the winding section 53 and further improve the flow of nitrogen gas.

[0067] In a preferred embodiment, the present application may be further configured such that the cross-sectional diameter of the winding rod is larger than the outer diameter of the gas supply pipe 44, which can reduce the curvature of the gas supply pipe 44 when it comes into contact with the winding rod, reduce the impact on the flow of nitrogen, and make the nitrogen flow more smoothly in the gas supply pipe 44.

[0068] In a preferred embodiment, this application can be further configured as follows: the lifting assembly 3 includes a cylinder 31 fixedly connected to the inner wall of the receiving groove, the telescopic end of the cylinder 31 is fixedly connected to the mounting body 12, and the gas pressurization assembly 6 includes:

[0069] Nitrogen storage tank 61 is fixedly connected to one side of mounting base 22;

[0070] The pressure cylinder 62 is fixedly connected to the other side of the mounting base 22;

[0071] The push rod 65 has one end fixedly connected to the mounting body 12, and the other end extends into the pressure cylinder 62 and is fixedly connected to a sealing plug 66. The sealing plug 66 is slidably connected to the inner wall of the pressure cylinder 62.

[0072] A nitrogen supply pipe 64 is connected at one end to a nitrogen storage tank 61 and at the other end to a pressurizing cylinder 62. A first control valve 641 is installed on the nitrogen supply pipe 64.

[0073] The pressurization pipe 63 is connected to the pressurization cylinder 62 at one end and to the nitrogen tank 41 at the other end. The pressurization pipe 63 is equipped with a second control valve 631.

[0074] When the inspection vehicle 7 enters the warehouse, cylinder 31 is activated, opening the first control valve 641 and closing the second control valve 631. The telescopic end of cylinder 31 moves the mounting body 12 upward, which in turn moves the push rod 65 and the sealing plug 66 upward. When the sealing plug 66 moves, it draws nitrogen from the nitrogen storage tank 61 into the pressurizing cylinder 62. When the detector 82 is above the placement box, the first control valve 641 is closed and the second control valve 631 is opened. The telescopic end of cylinder 31 retracts, causing the mounting body 12 to move downward, which in turn moves the push rod 65 downward. The sealing plug 66 pushes the nitrogen in the pressurizing cylinder 62 downward through the pressurizing pipe 63 into the nitrogen tank 41, thereby increasing the gas pressure inside the nitrogen tank 41 to create a pressure difference, which accelerates the flow of nitrogen in the gas delivery pipe 44. Furthermore, after the nitrogen in the nitrogen tank 41 is injected into the placement box, the amount of nitrogen in the nitrogen tank 41 will decrease, and the pressurization pipe 63 will send nitrogen into the nitrogen tank 41 to replenish the nitrogen in the nitrogen tank 41.

[0075] Working principle: During use, before the inspection vehicle 7 enters the warehouse, the movable plate 11 is pulled outwards towards the slide 121, the first bolt 13 is inserted into the threaded hole, and the first bolt 13 is rotated to press against the movable plate 11, thereby adjusting the horizontal position of the detector 82. The adjusting seat 21 is then moved within the adjusting groove, aligning the through hole 242 with the mounting hole 23. The second bolt 241 is then inserted into both the through hole 242 and the mounting hole 23, and rotating the second bolt 241 fixes the adjusting seat 21 in the desired position on the mounting seat 22. When the cloud detector enters the warehouse, cylinder 31 is activated, opening the first control valve 641 and closing the second control valve 631. The extension and retraction end of cylinder 31 drives the mounting body 12 upward, positioning the detector 82 above the placement box. It also drives the push rod 65 and the sealing plug 66 upward. When the sealing plug 66 moves, it draws nitrogen from the nitrogen storage tank 61 into the pressurizing cylinder 62. When the detector 82 detects a hydrogen leak, the fan 43 is activated, and the extension and retraction end of cylinder 31 retracts, creating a negative pressure in the gas delivery pipe 44. This draws nitrogen from the nitrogen tank 41 into the exhaust pipe 42, and the nitrogen is then transported to the placement box through the exhaust pipe 42 to dilute the leaked hydrogen. The retraction of the telescopic end of cylinder 31 causes the mounting body 12 to move downward, which in turn causes the push rod 65 to move downward. The sealing plug 66 will push the nitrogen in the pressurizing cylinder 62 downward through the pressurizing pipe 63 into the nitrogen tank 41, so that the nitrogen flows faster in the gas delivery pipe 44.

[0076] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0077] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hydrogen leak detection device, comprising a detection component (8) for detecting hydrogen leaks from hydrogen cylinders placed in a storage box, characterized in that, include: Inspection vehicle (7), including the vehicle body; A first telescopic component (1) is connected to the detection component (8) and is used to adjust the position of the detection component (8) in the horizontal direction; The lifting component (3) is connected to the first telescopic component (1) to enable the first telescopic component (1) to move in the vertical direction; The second telescopic component (2) is disposed on the vehicle body and connected to the lifting component (3) for adjusting the position of the lifting component (3) in the vertical direction; A nitrogen delivery assembly (4) is disposed on the vehicle body and connected to the detection assembly (8). The nitrogen delivery assembly (4) includes a gas delivery pipe (44) for injecting nitrogen into the placement box through the gas delivery pipe (44) when the detection assembly (8) detects a hydrogen leak in the hydrogen cylinder. Two winding assemblies (5), one of which is rotatably mounted on the first telescopic assembly (1) about an axis extending in the vertical direction, and the other of which is rotatably mounted on the vehicle body about an axis extending in the horizontal direction, for winding the air supply pipe (44); and, A gas pressurization assembly (6) is disposed on the second telescopic assembly (2) and connected to the first telescopic assembly (1) and the nitrogen delivery assembly (4) to increase the pressure inside the nitrogen delivery assembly (4) so ​​that the nitrogen flows faster in the gas delivery pipe (44).

2. The hydrogen leak detection device according to claim 1, characterized in that, The first telescopic component (1) includes a mounting body (12), a movable plate (11), and a first bolt (13). The mounting body (12) is provided with a groove (121) and a threaded hole communicating with the groove (121). The movable plate (11) is slidably connected to the inner wall of the groove (121). The first bolt (13) is threadedly connected to the inner wall of the threaded hole. The movable plate (11) is fixedly connected to the detection component (8). The second telescopic component (2) includes a mounting base (22) and an adjusting base (21). The mounting base (22) is fixedly connected to the vehicle body. The mounting base (22) is provided with an adjusting groove. The adjusting base (21) is slidably connected to the inner wall of the adjusting groove. The mounting base (22) has multiple mounting holes (23) spaced vertically on both sides. The adjusting base (21) has a fixing plate (24) on both sides. The fixing plate (24) has a through hole (242). The mounting holes (23) and the through hole (242) are threadedly connected by a second bolt (241). The adjusting base (21) has a receiving groove. The lifting component (3) connected to the mounting body (12) is provided in the receiving groove.

3. The hydrogen leak detection device according to claim 2, characterized in that, The detection component (8) includes a detection box (81) and a detector (82). One end of the detector (82) is connected to the inner wall of the detection box (81), and the outer wall of the detection box (81) is fixedly connected to the movable plate (11). The nitrogen delivery assembly (4) further includes a blower (43), an exhaust pipe (42), and a nitrogen tank (41). The blower (43) is connected to the inner wall of the detection box (81). One end of the exhaust pipe (42) is connected to the blower (43). The nitrogen tank (41) is fixedly connected to the vehicle body. The two ends of the air delivery pipe (44) are respectively connected to the blower (43) and the nitrogen tank (41).

4. The hydrogen leak detection device according to claim 3, characterized in that, Both of the aforementioned take-up components (5) include: A take-up plate (51) has a rotating column (54) and a winding section (53) fixedly connected to its two opposite surfaces; and, The partition (52) is spirally extended and is fixedly connected to the winding part (53) for placing the air supply pipe (44); The rotating columns (54) of the two winding assemblies (5) are rotatably connected to the mounting body (12) and the vehicle body, respectively, and the air supply pipe (44) is spirally wound around the outer surface of the winding part (53) and can abut against the partition (52).

5. The hydrogen leak detection device according to claim 4, characterized in that, The winding section (53) includes two winding rods fixedly connected to the take-up plate (51) and spaced apart, and the air supply pipe (44) spirally winds the two winding rods.

6. The hydrogen leak detection device according to claim 4, characterized in that, The lifting assembly (3) includes a cylinder (31) fixedly connected to the inner wall of the receiving groove, the telescopic end of the cylinder (31) being fixedly connected to the mounting body (12), and the gas pressurization assembly (6) including: A nitrogen storage tank (61) is fixedly connected to one side of the mounting base (22); A pressure cylinder (62) is fixedly connected to the other side of the mounting base (22); The push rod (65) has one end fixedly connected to the mounting body (12), and the other end extends into the pressure cylinder (62) and is fixedly connected to a sealing plug (66). The sealing plug (66) is slidably connected to the inner wall of the pressure cylinder (62). A gas supply pipe (64) is connected at one end to the nitrogen storage tank (61) and at the other end to the pressurizing cylinder (62). A first control valve (641) is provided on the gas supply pipe (64); and... A pressurizing pipe (63) is connected at one end to the pressurizing cylinder (62) and at the other end to the nitrogen tank (41). A second control valve (631) is provided on the pressurizing pipe (63).

7. The hydrogen leak detection device according to claim 5, characterized in that, The cross-sectional diameter of the winding rod is larger than the diameter of the air supply pipe (44).

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