Leakage detection jig and leakage detection device

Abstract

The utility model relates to a leak detection jig and a leak detection device, the leak detection device comprises a gas control cabinet and the leak detection jig, the leak detection jig comprises a support frame, a fixing assembly and a pneumatic execution assembly, the fixing assembly is rotatably connected to the support frame, and the pneumatic execution assembly is arranged on a fixing part and connected to the gas control cabinet through a pipeline. A product to be detected can be fixed on the fixing assembly and is wholly immersed in water, high-pressure gas is introduced into the product to be detected by the pneumatic execution assembly, and whether the product to be detected has leakage points or not is judged according to whether bubbles exist in water or not, so that both hands of an operator can be liberated, and the safety problem is avoided; and on the other hand, after the product to be detected is detected, the end part of the product to be detected can be exposed out of the water surface only by rotating the fixing assembly by an angle relative to the support frame, so that an operator can conveniently carry out leak repairing on one end with a leak point, the leak detection jig integrates leak detection and convenient leak repairing, and the production efficiency can be effectively improved.

Description

Technical Field

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

[0002] With the upgrading of consumption, people's pursuit of healthy life and requirements for water quality are getting higher and higher. As domestic household water purification technology continues to mature, household water purifiers will be used more and more widely in the daily life of ordinary families and have become an essential household appliance.

[0003] Therefore, as a major consumable for household water purifiers, the demand for water filter cartridges has been increasing year by year. After the production of household water filter cartridges is completed, it is necessary to check the product's sealing performance to see if there are any leaks, and to repair any leaks. However, currently, leak detection is mostly carried out by workers manually holding the product under test and then ventilating it with water. This testing method is inconvenient and also poses certain safety issues. Utility Model Content

[0004] Therefore, it is necessary to address the problem that current leak detection operations mostly involve workers manually holding the product under test to conduct air and water tests, which is inconvenient and poses safety risks. A leak detection fixture and a leak detection device including the leak detection fixture are needed to solve the above problems.

[0005] According to one aspect of this application, a leak detection fixture is provided, comprising:

[0006] Support frame;

[0007] A fixing component for fixing the product to be inspected, the fixing component being rotatably connected to the support frame about an axis extending in a first horizontal direction, so that the product to be inspected can be completely submerged in water, or that the end of the product to be inspected can be exposed above the water surface.

[0008] A pneumatic actuator is disposed on the fixed assembly. The pneumatic actuator is used to introduce gas into the inner cavity of the product under inspection when the product under inspection is completely submerged in water, so as to check whether the product under inspection has any leaks.

[0009] In one embodiment, the support frame includes a base frame and two side frames, the two side frames being disposed on opposite sides of the base frame in the first horizontal direction, and the fixing component being disposed between the two side frames and rotatably connected to the two side frames.

[0010] In one embodiment, the fixing component includes a base plate and a first fixing seat disposed on the base plate. The first fixing seat has a first fixing groove that extends through opposite sides of the first fixing seat in a second horizontal direction perpendicular to the first horizontal direction.

[0011] The pneumatic actuator is located at one end of the base plate along the second horizontal direction, and is spaced apart from the pneumatic actuator in the second horizontal direction.

[0012] In one embodiment, the fixing component further includes a second fixing seat, which is disposed on the base plate at one end away from the pneumatic actuator along a second horizontal direction perpendicular to the first horizontal direction, and the second fixing seat has a second fixing groove that extends through opposite sides of the second fixing seat in the second horizontal direction.

[0013] In one embodiment, the second mounting base has a baffle on the side away from the pneumatic actuator, the baffle being used to limit the displacement of the product to be inspected in the second horizontal direction.

[0014] In one embodiment, the second fixing groove is provided with positioning pins on both sides in the first horizontal direction. The positioning pins are used to abut against the product to be inspected to fix the product to be inspected.

[0015] In one embodiment, the support frame is provided with a mounting base, the mounting base is provided with a damping adjustment block, the damping adjustment block and the mounting base form a mounting hole, a rotating shaft is inserted into the mounting hole, and the fixing component is rotatably connected to the support frame through the rotating shaft;

[0016] The damping adjustment block can be moved to different positions relative to the mounting base in the vertical direction to adjust the damping between the damping adjustment block and the rotating shaft.

[0017] In one embodiment, the pneumatic actuator includes:

[0018] The bracket is mounted on the fixing component;

[0019] A pneumatic actuator is mounted on the bracket, and the end of the pneumatic actuator has a pneumatic expansion clamp;

[0020] A connector is disposed on the pneumatic actuator and communicates with the interior of the pneumatic actuator; the connector is used to connect to an air source.

[0021] According to another aspect of this application, a leak detection device is provided, including a gas control cabinet and a leak detection fixture as described in any of the above embodiments, wherein the pneumatic actuator of the leak detection fixture is connected to the gas control cabinet, and the gas control cabinet is provided with a human-machine interface and several control buttons.

[0022] In one embodiment, the leak detection device further includes a water tank, and the leak detection fixture is disposed inside the water tank.

[0023] The aforementioned leak detection fixture and leak detection device including the fixture, on the one hand, by setting a support frame and a fixing component connected to the support frame, and by setting a pneumatic actuator on the fixing component, allows the product to be inspected to be fixed on the fixing component and completely submerged in water through a simple structural design. High-pressure gas is introduced into the product to be inspected by the pneumatic actuator, and the presence of air bubbles in the water is used to determine whether there is a leak. This frees up the operator's hands and avoids safety issues. On the other hand, by making the fixing component rotatably connected to the support frame, after the product to be inspected is inspected, simply rotating the fixing component relative to the support frame by an angle will expose the end of the product to the water surface. This makes it easy for the operator to repair the leak at the end. The leak detection fixture provided in this application integrates leak detection and easy leak repair into one unit, thereby effectively improving production efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a leak detection device provided in one embodiment of this application.

[0025] Figure 2 This is a schematic diagram of the structure of a leak detection fixture provided in one embodiment of this application.

[0026] Figure 3 This is a schematic diagram of the structure of the product to be inspected provided in one embodiment of this application.

[0027] Figure 4 for Figure 2 An enlarged schematic diagram of region A in the middle.

[0028] Figure 5 for Figure 2 A magnified view of region B in the middle.

[0029] Figure 6 This is a schematic diagram of the appearance of a gas control cabinet provided in one embodiment of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Leak detection device; 100. Water tank; 200. Leak detection fixture; 210. Support frame; 211. Bottom frame; 212. Side frame; 220. Fixing assembly; 221. Base plate; 222. First fixing seat; 2221. First fixing groove; 223. Second fixing seat; 2231. Second fixing groove; 224. Baffle; 225. Positioning pin; 230. Pneumatic actuator assembly; 231. Bracket; 232. Pneumatic Components; 233. Connector; 234. Pneumatic expansion clamp; 240. Mounting base; 250. Damping adjustment block; 260. Rotating shaft; 300. Gas control cabinet; 301. Human-machine interface; 302. Manual and automatic switch; 303. Start button; 304. Stop button; 305. Emergency stop button; 40. Product to be inspected; 41. Housing; 42. Membrane fiber; 43. Membrane fiber cross-section hole; 44. Water outlet. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0038] This application provides a leak detection fixture and a leak detection device including the leak detection fixture, used to fix the product to be inspected so that the product to be inspected can be placed in water for sealing test, so that the operator can find out whether there is a leak in the product to be inspected, and then it is convenient to repair the leak, thereby solving the problem of inconvenience of existing leak detection methods.

[0039] The following description uses a water filter cartridge from a household water purifier as an example to illustrate the structure of the leak detection device and leak detection fixture. It is understood that in other embodiments, the leak detection device and leak detection fixture of this application are not limited to leak detection of water filter cartridges, but can also be used to detect leaks in any product with high sealing requirements; this is not limited here.

[0040] like Figure 1The diagram shown is a structural schematic of a leak detection device 10 according to an embodiment of this application. The leak detection device 10 includes a water tank 100, a leak detection fixture 200, and a gas control cabinet 300. The water tank 100 is used to hold water. The leak detection fixture 200 is placed in the water tank 100 to fix the product 40 to be inspected, allowing the product 40 to be submerged in water. The gas control cabinet 300, acting as a gas source, is located outside the water tank 100 and connected to the leak detection fixture (not shown in the diagram) via a gas pipe. It provides high-pressure gas to the leak detection fixture 200, enabling the leak detection fixture 200 to introduce high-pressure gas into the inner cavity of the product 40. When the product 40 is submerged in water, the operator can determine whether there is a leak by observing whether bubbles are generated in the water in the water tank 100.

[0041] Specifically, in the embodiments of this application, such as Figure 2 As shown, the leak detection fixture 200 includes a support frame 210, a fixing assembly 220, and a pneumatic actuation assembly 230, wherein the fixing assembly 220 is about an axis extending along a first horizontal direction (the X direction shown in the figure). Figure 2 The pneumatic actuator 230 is rotatably connected to the support frame 210 (with a dotted line in the image), and is mounted on the fixed assembly 220. The fixed assembly 220 can rotate relative to the support frame 210 about the aforementioned axis, so that the product under inspection 40 can be completely submerged in water, or that the end of the product under inspection 40 can be exposed above the water surface. When the product under inspection 40 is completely submerged in water, the pneumatic actuator 230 can introduce high-pressure gas into the inner cavity of the product under inspection 40 to check for leaks. If a leak is found, the fixed assembly 220 can be manually rotated relative to the support frame 210 at an angle, so that the end of the product under inspection 40 with the leak is exposed above the water surface, making it convenient for the operator to repair the leak.

[0042] Taking product 40, a water purification filter element, as an example, such as Figure 3As shown, the water purification filter element includes a housing 41 and multiple membrane filaments 42 disposed in the housing 41. During use, tap water enters the membrane filaments 42 through the membrane filament cross-section holes 43 at both end faces of the housing 41, passes through the wall of the membrane filaments 42, is filtered into pure water, and then enters the inner cavity of the housing 41. Subsequently, the pure water flows out from the water outlets 44 at both ends of the housing 41. Here, the characteristic that the wall of the membrane filaments 42 can only pass water and not air can be utilized to allow the pneumatic actuator assembly 230 to introduce high-pressure gas from the water outlet 44. Thus, if there is no leakage point in the membrane filaments 42, the inner cavity of the housing 41 is a closed cavity, and the gas will not leak out from the cross-section of the membrane filaments 42. When the water purification filter element is immersed in water, no bubbles will be generated in the water; if there is a leakage point in the membrane filaments 42, due to the pressure difference inside and outside the filter element, bubbles will be generated in the water, enabling the detection of which specific membrane filament 42 has a leakage point. Then, the membrane filament 42 with the leakage point is blocked, making this membrane filament 42 ineffective in filtration, thereby completing the leak repair operation.

[0043] Of course, it can be understood that the water outlet 44 of the filter element in the figure can also be the water inlet, and the pneumatic actuator can introduce high-pressure gas from the water inlet, which is not limited herein.

[0044] More specifically, the structures of the support frame 210, the fixing component 220, and the pneumatic actuator assembly 230 will be introduced separately as follows.

[0045] Please continue to refer to Figure 2 , in one embodiment, the support frame 210 includes a bottom frame 211 in the shape of a "square" and two side frames 212 in the shape of a trapezoidal "square". The two side frames 212 are respectively disposed on opposite sides of the bottom frame 211 in the first horizontal direction. The fixing component 220 is disposed between the two side frames 212 and is rotatably connected to the two side frames 212.

[0046] In one embodiment, in combination with Figure 2 and Figure 4 as shown, the fixing component 220 includes a bottom plate 221 and a first fixing seat 222 and a second fixing seat 223 disposed on the bottom plate 221. The first fixing seat 222 is provided with a first fixing groove 2221, and the first fixing groove 2221 penetrates through opposite sides of the first fixing seat 222 in the second horizontal direction ( Figure 2 the Y direction shown in

[0047] Preferably, the groove wall contour dimensions of the first fixing groove 2221 match the outer surface contour dimensions of the product to be inspected 40, so that the middle part of the product to be inspected 40 can be engaged in the first fixing groove 2221, thereby limiting the displacement of the middle part of the product to be inspected 40 in the first horizontal direction and playing a certain limiting role for the product to be inspected 40.

[0048] Preferably, based on the above embodiment, the fixing component 220 further includes a second fixing seat 223, which is disposed on the base plate 221 at one end away from the pneumatic actuator 230 along a second horizontal direction. That is, the first fixing seat 222 is located between the second fixing seat 223 and the pneumatic actuator 230 in the second horizontal direction. Similar to the first fixing seat 222, the second fixing seat 223 has a second fixing groove 2231, which extends through the opposite sides of the second fixing seat 223 in the second horizontal direction.

[0049] Preferably, the groove wall contour dimension of the second fixing groove 2231 matches the outer surface contour dimension of the product to be inspected 40, so that the end of the product to be inspected 40 can be engaged in the second fixing groove 2231, thereby restricting the displacement of the end of the product to be inspected 40 in the first horizontal direction, so that the second fixing groove 2231 can restrict the displacement of the product to be inspected 40 in the first horizontal direction together with the first fixing groove 2221.

[0050] More preferably, the second fixed base 223 is provided with a baffle 224 on the side away from the pneumatic actuator 230. The baffle 224 is used to abut against one end of the product to be inspected 40, thereby limiting the displacement of the product to be inspected 40 in the second horizontal direction.

[0051] Based on this, in order to better fix the product 40 to be inspected, the second fixing groove 2231 is provided with positioning pins 225 on both sides of the first horizontal direction. The positioning pins 225 are used to abut against the outer peripheral surface of the product 40 to fix the product 40 to be inspected.

[0052] Understandably, in one embodiment, threaded holes communicating with the second fixing groove 2231 can be opened at both ends of the second fixing seat 223 along the first horizontal direction. Each positioning pin 225 is movably inserted into a corresponding threaded hole, so that the two positioning pins 225 can move closer or further apart to fix products 40 of different diameters. Exemplarily, the positioning pin 225 can be a rubber-headed ball spring positioning pin 225.

[0053] It is understandable that only the first fixing seat 222 or only the second fixing seat 223 can be set, but obviously setting both the first fixing seat 222 and the second fixing seat 223 at the same time can better position and fix the product 40 to be inspected.

[0054] In the connection structure between the fixing component 220 and the support frame 210, such as Figure 4 As shown, the support frame 210 is provided with a mounting base 240, and the mounting base 240 is provided with a damping adjustment block 250. The damping adjustment block 250 has a semi-circular groove on the side facing the mounting base 240, and the mounting base 240 also has a semi-circular groove on the side facing the damping adjustment block 250, so that the damping adjustment block 250 and the mounting base 240 form a mounting hole. A rotating shaft 260 is inserted into the mounting hole, and the fixing component 220 is rotatably connected to the support frame 210 through the rotating shaft 260. The damping adjustment block 250 can move to different positions relative to the mounting base 240 in the vertical direction (Z direction shown in the figure) to adjust the damping between the damping block and the rotating shaft 260. It should be explained here that damping refers to the degree of clamping between the damping adjustment block 250 and the mounting base 240 and the rotating shaft 260. The closer the damping adjustment block 250 is to the mounting base 240, the greater the clamping degree of the rotating shaft 260, and therefore the greater the damping. The greater the resistance that the fixed component 220 has to overcome when rotating relative to the support frame 210. The farther the damping adjustment block 250 is from the mounting base 240, the smaller the clamping degree of the rotating shaft 260, and therefore the smaller the damping. The less the resistance that the fixed component 220 has to overcome when rotating relative to the support frame 210.

[0055] Figure 4 In the embodiment shown, the rotating shaft 260 is connected to the first fixed base 222. Of course, the rotating shaft 260 can also be connected to the base plate 221, as long as it is connected to the fixed component 220.

[0056] See Figure 5 In one embodiment, the pneumatic actuator 230 includes a bracket 231, a pneumatic actuator 232, and a connector 233. The bracket 231 is mounted on the base plate 221 of the fixed assembly 220, the pneumatic actuator 232 is mounted on the bracket 231, and the connector 233 is mounted on the pneumatic actuator 232 and communicates with the interior of the pneumatic actuator 232. The connector 233 is used to connect to the gas control cabinet 300 via an air pipe. The pneumatic actuator 232 is used to introduce high-pressure gas into the product 40 to be inspected under the drive of high-pressure gas. Furthermore, in a preferred embodiment, a pneumatic expansion clamp 234 is movably provided at the end of the pneumatic actuator 232, and the pneumatic expansion clamp 234 is used to connect the product 40 to be inspected.

[0057] Specifically, the pneumatic expansion clamp 234 has a silicone head. For example, when the product to be inspected 40 is a water filter cartridge, the silicone head can be inserted into the outlet 44 of the water filter cartridge, so that the pneumatic actuator 232 can abut against the end of the water filter cartridge away from the second fixing seat 223. When high-pressure gas enters the pneumatic actuator 232 through the connector 233 and then enters the inner hole of the silicone head, the silicone head will expand and deform, squeezing the inner wall of the outlet 44 of the water filter cartridge to fix the water filter cartridge and seal it. At the same time, high-pressure gas is injected into the water filter cartridge through the inner hole of the silicone head.

[0058] In addition, such as Figure 6 As shown, the gas control cabinet 300 is equipped with a human-machine interface 301 and several control buttons. For example, the control buttons include a manual and automatic switch 302, a start button 303, a stop button 304, and an emergency stop button 305. Of course, the control buttons are not limited to the above buttons and can be other control buttons, which are not limited here.

[0059] It should be noted that the leak detection device 10 may not be equipped with a water tank 100; it can be used simply by immersing the leak detection fixture 200 in a space containing water.

[0060] The following describes the specific workflow for leak detection using the leak detection device 10 provided in this application:

[0061] First, place the fixing component 220 horizontally. Then, snap the product to be inspected 40 into the first fixing groove 2221 and the second fixing groove 2231 of the fixing component 220, and make one end of the product to be inspected abut against the baffle 224. The positioning pin 225 on the second fixing seat 223 can fix and limit one end of the product to be inspected to prevent the product to be inspected 40 from falling off the fixing component 220. Then, connect the connector 233 of the pneumatic actuator 230 to the gas control cabinet 300 through the air pipe.

[0062] At this point, the product 40 to be inspected can be completely submerged in the water in the water tank 100, so the gas control cabinet 300 can be operated and controlled. The manual and automatic switch 302 is switched to automatic mode, and the start button 303 is pressed. The pneumatic actuator 230 pushes the pneumatic expansion clamp 234 to move towards the outlet 44 of the product 40 to be inspected. After the silicone head of the pneumatic expansion clamp 234 enters the outlet 44 of the product 40 to be inspected and is in place, high-pressure gas enters the pneumatic expansion clamp 234 from the gas control cabinet 300 through the air pipe and connector 233. The silicone head of the pneumatic expansion clamp 234 deforms and squeezes the inner wall of the outlet 44 of the product 40 to be inspected to achieve the function of fixing and sealing. At the same time, high-pressure gas is filled into the interior of the product 40 to be inspected through the inner hole of the pneumatic expansion clamp 234.

[0063] At this point, observe the pressure display on the human-machine interface 301 of the gas control cabinet 300. Continuously pressurize the product under test 40 for a period of time (e.g., pressurize to 0.15 MPa and continue for 5 minutes), while observing whether bubbles are generated in the water tank 100. If no bubbles are generated, the product under test 40 has no leaks; otherwise, it is a defective product. If the product under test 40 is found to be defective, press the stop button 304, then press the automatic / manual switch to switch to manual mode, and then press the start button 303 again. After the pneumatic actuator 232 completes its action, continuously press high-pressure gas into the product under test 40. Then rotate the fixing component 220 relative to the support frame 210 by an angle, observe the leak locations on the two end faces of the product under test 40, and then rotate the fixing component 220 by an angle to expose both ends of the product under test 40 above the water surface and repair the leaks. After repairing the leaks, rotate the fixing component 220 again to immerse the product under test 40 in water for testing until no bubbles are generated in the water.

[0064] Therefore, the leak detection fixture 200 and leak detection device 10 provided in this application are highly practical and have low manufacturing costs. Through a simple mechanical structure design, and by using the human-machine interface 301 on the gas control cabinet 300, control operation can be achieved. It integrates leak detection and easy leak repair into one unit, which can effectively solve the problem that most existing products are tested by manually holding the product 40 to be tested for ventilation and water drainage, which is inconvenient and poses safety risks. It effectively improves production efficiency.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A leak detection fixture, characterized in that, include: Support frame (210); A fixing component (220) is used to fix the product to be inspected (40). The fixing component (220) is rotatably connected to the support frame (210) about an axis extending in a first horizontal direction so that the product to be inspected (40) can be completely submerged in water or the end of the product to be inspected (40) can be exposed above the water surface. A pneumatic actuator (230) is disposed on the fixed assembly (220). The pneumatic actuator (230) is used to introduce gas into the inner cavity of the product under inspection (40) when the product under inspection (40) is completely submerged in water, so as to check whether the product under inspection (40) has any leaks.

2. The leak detection fixture according to claim 1, characterized in that, The support frame (210) includes a bottom frame (211) and two side frames (212). The two side frames (212) are respectively disposed on opposite sides of the bottom frame (211) in the first horizontal direction. The fixing component (220) is disposed between the two side frames (212) and is rotatably connected to the two side frames (212).

3. The leak detection fixture according to claim 1, characterized in that, The fixing component (220) includes a base plate (221) and a first fixing seat (222) disposed on the base plate (221). The first fixing seat (222) has a first fixing groove (2221) which extends through the opposite sides of the first fixing seat (222) in a second horizontal direction perpendicular to the first horizontal direction. The pneumatic actuator (230) is located at one end of the base plate (221) along the second horizontal direction and is spaced apart from the first fixed seat (222) in the second horizontal direction.

4. The leak detection fixture according to claim 3, characterized in that, The fixing component (220) includes a second fixing seat (223), which is disposed on the base plate (221) away from the pneumatic actuator (230) along a second horizontal direction perpendicular to the first horizontal direction. The second fixing seat (223) is provided with a second fixing groove (2231), which extends through the opposite sides of the second fixing seat (223) in the second horizontal direction.

5. The leak detection fixture according to claim 4, characterized in that, The second mounting base (223) has a baffle (224) on the side away from the pneumatic actuator (230), the baffle (224) being used to limit the displacement of the product to be inspected (40) in the second horizontal direction.

6. The leak detection fixture according to claim 4, characterized in that, The second fixing groove (2231) is provided with positioning pins (225) on both sides of the first horizontal direction. The positioning pins (225) are used to abut against the product to be inspected (40) to fix the product to be inspected (40).

7. The leak detection fixture according to claim 1, characterized in that, The support frame (210) is provided with a mounting base (240), and the mounting base (240) is provided with a damping adjustment block (250). The damping adjustment block (250) and the mounting base (240) form a mounting hole. A rotating shaft (260) is inserted into the mounting hole. The fixing component (220) is rotatably connected to the support frame (210) through the rotating shaft (260). The damping adjustment block (250) can be moved to different positions relative to the mounting base (240) in the vertical direction to adjust the damping between the damping adjustment block (250) and the rotating shaft (260).

8. The leak detection fixture according to claim 1, characterized in that, The pneumatic actuator (230) includes: A bracket (231) is mounted on the fixing component (220); A pneumatic actuator (232) is mounted on the bracket (231), and a pneumatic expansion clamp (234) is provided at the end of the pneumatic actuator (232); A connector (233) is disposed on the pneumatic actuator (232) and communicates with the interior of the pneumatic actuator (232). The connector (233) is used to connect to an air source.

9. A leak detection device, characterized in that, It includes a gas control cabinet (300) and a leak detection fixture (200) as described in any one of claims 1-8, wherein the pneumatic actuator (230) of the leak detection fixture (200) is connected to the gas control cabinet (300) and the gas control cabinet (300) is provided with a human-machine interface 301 and several control buttons.

10. The leak detection device according to claim 9, characterized in that, The leak detection device (10) also includes a water tank (100), and the leak detection fixture (200) is disposed inside the water tank (100).

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