Container leakage defect detection device

Abstract

The utility model relates to a container leakage defect detection device, and belongs to the technical field of product quality detection. The device comprises a carrying table, a fixing assembly, an air supply assembly, a pressure sensor and a water tank. The carrying table is provided with a placing area for placing a to-be-detected product; the fixing assembly is installed on the carrying table and used for fixing a product and pressing the product against the carrying table. The gas supply assembly is used for introducing gas into the product; the pressure sensor is used for measuring an air pressure value in the product; the water tank is used for storing liquid and allowing the product to be immersed in the liquid for detection. According to the utility model, the leakage defect of the container product can be effectively detected, and the accuracy and the visualization degree of detection are improved through the combination of air pressure measurement and liquid immersion.

Description

Technical Field

[0001] This application belongs to the field of detection technology, and in particular relates to a container leakage defect detection device. Background Technology

[0002] Weld inspection (i.e., non-destructive testing of welds) refers to the technology of detecting internal and surface defects of welded joints through non-destructive means to ensure their structural integrity and safety.

[0003] Existing weld flaw detection methods mainly include the following:

[0004] 1. Visual inspection: Observe the surface pores and undercuts using a magnifying glass;

[0005] 2. Magnetic particle inspection: This method uses a magnetic field to attract magnetic particles and reveal surface cracks. It is commonly used in shipbuilding.

[0006] 3. Penetrant testing: Spraying a developer causes surface opening defects to seep out, suitable for non-magnetic materials.

[0007] The above solutions are generally inefficient, cannot achieve standardized operations, and rely on visual inspection by workers, making it difficult to guarantee that no inspections will be missed. Utility Model Content

[0008] The technical problem to be solved by this utility model is to provide a container leakage defect detection device to overcome one of the shortcomings of the existing weld flaw detection scheme.

[0009] The technical solution adopted by this utility model to solve its technical problem is:

[0010] A container leakage defect detection device, comprising:

[0011] The testing platform includes a placement area for placing products to be tested;

[0012] A fixing component, installed on the platform, is used to fix the product placed in the placement area and to press the product against the platform.

[0013] An air supply assembly is used to introduce gas into the product and achieve a preset air pressure value.

[0014] A pressure sensor is used to measure the air pressure inside the product.

[0015] A water tank is used to store liquid so that the product can be submerged in the liquid to detect the presence of gas leaks.

[0016] In an optional embodiment, the fixing component includes:

[0017] A pressure bar is used to abut against one side of the product;

[0018] A rotation drive is used to drive the pressure rod to rotate along a plane parallel to the platform; the pressure rod can reach at least a first position and a second position under the drive of the rotation drive; when the pressure rod is in the first position, the projection of the pressure rod along the direction perpendicular to the platform coincides at least partially with the placement area; when the pressure rod is in the second position, the projection of the pressure rod along the direction perpendicular to the platform does not coincide with the placement area.

[0019] A lifting drive is used to move the pressure rod in a direction perpendicular to the platform, so that the pressure rod presses the product against the platform.

[0020] In an optional embodiment, the stage includes: a stage body;

[0021] A sealing gasket is fixed to the surface of the platform body, and the placement area is formed in the sealing gasket.

[0022] In an optional embodiment, the container leakage defect detection device further includes a water tank lifting mechanism for moving the water tank closer to or away from the platform, so that the product is immersed in or removed from the water tank.

[0023] In an alternative embodiment, the sidewall of the water tank is made of a transparent panel or has a viewing window.

[0024] In an optional embodiment, the container leakage defect detection device further includes a searchlight disposed on at least one side of the water tank for illuminating the interior of the water tank.

[0025] In an optional embodiment, the container leakage defect detection device further includes a platform support, the support including a support body and a platform connecting rod, one end of the platform connecting rod being connected to the edge of the platform for supporting the platform, and the other end of the platform connecting rod being connected to the support body; a gap is formed between the support body and the platform connecting rod for the side wall of the water tank to pass through.

[0026] In an optional embodiment, the gas supply assembly further includes a control valve for cutting off the gas supply to the gas inlet of the product after it has been filled with gas.

[0027] In an optional embodiment, the container leakage defect detection device further includes a pressure regulating valve connected to the gas supply assembly for adjusting the pressure of the gas output by the gas supply assembly.

[0028] In an optional embodiment, the container leakage defect detection device further includes an image recognition mechanism for monitoring images of the liquid in the tank to identify whether bubbles are generated in the liquid.

[0029] The beneficial effects of this invention are as follows: It can fix the product placed on the platform using a fixing component, pressing the product tightly against the platform and forming a sealed chamber inside the product. The product can be submerged in a water tank. By using an air supply component to inflate the product, bubbling in the water tank can be detected. Simultaneously, a pressure sensor monitors the internal pressure value of the product. Therefore, when testing a product using this container leakage defect detection device, if bubbles are observed in the water tank and / or the pressure value monitored by the pressure sensor shows an abnormal decrease, it indicates that the tested product has a leakage defect. The detection results are relatively intuitive, and the pressure monitoring does not rely on manual intervention, greatly reducing the probability of missed detections. Attached Figure Description

[0030] The technical solution of this application will be further described below with reference to the accompanying drawings and embodiments.

[0031] Figure 1 This is a schematic diagram of the container leakage defect detection device according to an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the fixed component structure according to an embodiment of this application;

[0033] Figure 3 This is a schematic diagram of the fixed component fixing the product state according to an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the product state with the fixing component loosened according to an embodiment of this application;

[0035] Figure 5 This is a front view of the container leakage defect detection device according to an embodiment of this application.

[0036] The attached figures are labeled as follows:

[0037] 1. Platform; 10. Platform body; 11. Placement area; 12. Sealing gasket;

[0038] 2. Fixed components; 21. Pressure rod; 22. Rotary telescopic cylinder;

[0039] 3. Gas supply components; 31. Control valve;

[0040] 4. Pressure sensor;

[0041] 5. Products;

[0042] 6. Pressure regulating valve;

[0043] 7. Water tank;

[0044] 8. Water tank lifting mechanism;

[0045] 9. Support frame; 91. Support frame body; 92. Platform connecting rod; 93. Gap. Detailed Implementation

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0047] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used 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 limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] The technical solution of this application will now be described in detail with reference to the accompanying drawings and embodiments.

[0050] This embodiment provides a container leakage defect detection device, such as... Figures 1-4 As shown, the device includes: a platform 1, a fixing assembly 2, an air supply assembly 3, a pressure sensor 4, and a water tank 7. This container leakage defect detection device is used to detect leakage defects in product 5. The container leakage defect detection device provided in this embodiment is suitable for containers with an opening on one side.

[0051] The stage 1 includes a placement area 11 for placing the product 5 to be tested. When testing the product 5, the product 5 should be placed in the placement area 11 to ensure that the fixing component 2 can accurately fix it, and the side of the product 5 with the opening should face the stage 1.

[0052] The fixing component 2 is installed on the platform 1 to fix the product 5 placed on the placement area 11 and to press the product against the platform 1. The opening of the product 5, which is located in the placement area 11 and has been pressed by the fixing component 2, is effectively sealed because it abuts against the surface of the platform 1.

[0053] The gas supply component 3 is used to introduce gas into the product 5 and reach a preset gas pressure value. The product 5 has a through hole for gas to enter.

[0054] Pressure sensor 4 is used to measure the air pressure inside product 5. Its purpose is to reflect whether product 5 leaks after inflation. An abnormal decrease in air pressure indicates that an air leak has occurred, while a stable air pressure indicates that there is no obvious leak.

[0055] Water tank 7 is used to store liquid for product 5 to be immersed in the liquid for testing. The function of water tank 7 is that when product 5 leaks air after being inflated, bubbles will inevitably rise from the liquid in water tank 7, allowing for comprehensive testing without blind spots. The bubbles can clearly indicate that product 5 has a leakage defect.

[0056] The container leakage defect detection device provided in this embodiment can fix the product 5 placed on the platform 1 using the fixing component 2, pressing the product tightly against the platform 1. This forms a sealed chamber inside the product 5, allowing it to be submerged in the water tank 7. The device detects bubbling by inflating the product 5 using the air supply component 3, while simultaneously monitoring the internal pressure of the product 5 using a pressure sensor 4. Therefore, when detecting a product using this container leakage defect detection device, if bubbles are observed in the water tank 7, and / or the pressure value monitored by the pressure sensor 4 shows an abnormal decrease, it indicates that the product 5 has a leakage defect. The detection results are relatively intuitive, and the pressure monitoring does not rely on manual intervention, greatly reducing the probability of missed detections.

[0057] The following precautions should be taken when using the container leakage defect detection device provided in this embodiment:

[0058] 1. In actual testing, the formation of air bubbles may also be due to insufficient fixing force of the fixing component 2, or gaps between the opening of product 5 and the surface of the stage 1. Therefore, the specific location of the air bubbles needs further verification, and the measurement value of pressure sensor 4 can also be referenced. If the air pressure drop value significantly exceeds the value that a leakage defect may reach, it is necessary to confirm whether the fixing component 2 is not properly fixed.

[0059] 1. In actual testing, if the leakage pores of product 5 are very small, the pressure value monitored by pressure sensor 4 may not change significantly, while air bubbles can still be observed in water tank 7. Therefore, product 5 should not be deemed to be without defects solely based on the fact that the pressure value monitored by pressure sensor 4 does not change significantly.

[0060] 3. During actual testing, if no air bubbles are generated in the water tank 7, and the pressure value monitored by the pressure sensor 4 does not decrease but is too low (for example, the internal pressure of the product 5 after the preset inflation needs to reach 40 kPa, but the pressure measured by the pressure sensor 4 is 4 kPa), then the air supply component 3 or the pressure sensor 4 may be faulty and needs to be repaired.

[0061] 4. During actual testing, if a large number of bubbles are generated in water tank 7, but the pressure value monitored by pressure sensor 4 does not decrease, pressure sensor 4 may be faulty and needs to be repaired.

[0062] In an alternative embodiment, such as Figure 2 As shown, the fixing assembly 2 includes: a pressure rod 21, a rotation drive, and a lifting drive. The pressure rod 21 is used to abut against one side of the product 5 to apply pressure to the product 5. The rotation drive is used to drive the pressure rod 21 to rotate along a plane parallel to the platform 1, which facilitates alignment of the product 5's edge for subsequent pressing of the product 5. The lifting drive is used to drive the pressure rod 21 to move in a direction perpendicular to the platform 1, so that the pressure rod 21 presses the product 5 against the platform 1, sealing the open side of the product 5 and forming a sealed space inside the product 5 (except for the part that needs to be connected to the air supply assembly 3).

[0063] The pressure rod 21 can reach at least the first position and the second position under the drive of the rotating drive component; such as Figure 3 As shown, when the pressure rod 21 is in the first position, the projection of the pressure rod 21 along the direction perpendicular to the platform 1 at least partially coincides with the placement area 11, facilitating the alignment of the product 5's edge for subsequent pressing of the product 5. During drive operation, after the rotating drive component drives the pressure rod 21 to the first position, the lifting drive component drives the pressure rod 21 to move towards the platform 1, pressing the product 5 onto the platform 1. Figure 4 As shown, when the pressure bar 21 is in the second position, the projection of the pressure bar 21 along the direction perpendicular to the platform 1 does not coincide with the placement area 11, so that the product 5 can be placed in the placement area 11 without obstruction, or the product 5 can be taken away from the placement area 11 without obstruction.

[0064] In this embodiment, the fixing component 2 can achieve fully automated clamping or releasing of product 5. The structure and control method are relatively simple and the reliability is good.

[0065] In an alternative embodiment, such as Figure 3 , Figure 4 As shown, the fixing component 2 is arranged around the placement area 11, so that the pressure rod 21 can press more evenly at various positions on the edge of the product 5, thus preventing air leakage at the edge of the product 5.

[0066] In an alternative embodiment, such as Figure 2As shown, the fixing component 2 in this embodiment adopts an integrated rotation drive and lifting drive, such as a rotary telescopic cylinder 22, which can perform both rotation drive and telescopic drive. It is small in size and occupies little space on the platform 1, which helps to reduce the overall space occupied by the device.

[0067] In an alternative embodiment, such as Figure 1 As shown, the platform 1 includes a platform body 10 and a sealing gasket 12. The sealing gasket 12 is fixed to the surface of the platform body 10, and the placement area 11 is formed on the sealing gasket 12. In this embodiment, when the product 5 is placed on the placement area 11, the sealing gasket 12 can form a good seal with the opening edge at the bottom of the product 5, preventing gas leakage and avoiding false detection. The sealing gasket 12 can be made of fluororubber material, which has good chemical stability and temperature resistance.

[0068] In an alternative embodiment, such as Figure 1 , Figure 5 As shown, the container leakage defect detection device also includes a water tank lifting mechanism 8. The water tank lifting mechanism 8 is used to move the water tank 7 closer to or away from the platform 1, so that the product 5 is immersed in the water tank 7 or detached from the water tank 7. In this embodiment, the water tank lifting mechanism 8 automatically drives the water tank 7 to rise and fall, which enables the water tank 7 to automatically move towards the platform 1 after the product 5 is fixed until the product 5 is completely submerged in the liquid. After the detection is completed, the water tank 7 automatically resets under the drive of the water tank lifting mechanism 8, so that the platform 1 is exposed above the water surface.

[0069] In an optional embodiment, the container leakage defect detection device of this embodiment is further provided with a blower mechanism for drying the inspected product 5 and removing water stains adhering to the product 5. To facilitate the drying of the product 5, the liquid in the water tank 7 is not limited to water, but can also be a fast-evaporating organic solvent such as alcohol.

[0070] In an optional embodiment, the sidewall of the water tank 7 is made of a transparent panel or has a viewing window. For example, the sidewall of the water tank 7 is made of a sheet of transparent material such as transparent acrylic or glass, or the frame of the water tank 7 is made of stainless steel, but a transparent viewing window is provided on the side to facilitate observation of the product in the liquid, especially to facilitate observation of the location of bubble formation.

[0071] In an optional embodiment, the container leakage defect detection device further includes a searchlight disposed on at least one side of the water tank 7 to illuminate the interior of the water tank 7. The searchlight provides bright and uniform illumination, facilitating observation of leakage of the product 5 within the water tank 7. The searchlight may be adjustable in position to accommodate different detection needs.

[0072] In an alternative embodiment, such as Figure 1 , Figure 5As shown, the container leakage defect detection device also includes a platform support 9. The support 9 includes a support body 91 and a platform connecting rod 92. One end of the platform connecting rod 92 is connected to the edge of the platform 1 to support the platform 1, and the other end of the platform connecting rod 92 is connected to the support body 91. A gap 93 is formed between the support body 91 and the platform connecting rod 92, through which the side wall of the water tank 7 passes. It is understood that the width of the gap 93 should be designed to be greater than the wall thickness of the water tank 7. In this embodiment, the platform support 9 facilitates the support of the platform 1, and the design of the gap 93 ensures that the movement of the water tank 7 is not affected, allowing the water tank to rise below the platform 1 and completely immerse the product 5.

[0073] In an alternative embodiment, such as Figure 1 As shown, the gas supply assembly 3 also includes a control valve 31, which is used to cut off the gas supply to the gas inlet of the product 5 after it has been filled with gas. The function of the control valve 31 is to quickly cut off the gas source and maintain stable gas pressure inside the product 5. The opening and closing of the control valve can be controlled by the control system and operated automatically according to the testing process. For example, the control valve 31 can be automatically controlled by PLC programming to fill the cavity of the product 5 with gas. The pressure sensor 4 monitors the pressure inside the cavity in real time. When the pressure reaches 40 kPa, the control valve 31 cuts off the gas source to maintain the pressure. If the pressure remains unchanged for 3 minutes, it is considered a good product. At the same time, during the pressure maintenance period, all welds are visually inspected for air bubbles. If no air bubbles are generated, the product 5 is considered qualified. After the test is completed, the control valve 31 is automatically controlled by PLC programming to release the gas and lower the water tank 7. The water stains are dried, the product 5 is taken out, and the inspection is completed.

[0074] In an alternative embodiment, such as Figure 5 As shown, the container leakage defect detection device also includes a pressure regulating valve 6, which is connected to the gas supply assembly 3 and is used to regulate the pressure of the gas output by the gas supply assembly 3 to ensure that the gas pressure provided by the gas supply assembly 3 meets the product testing requirements during product testing. Appropriate detection pressures can be set via the pressure regulating valve 6 according to the requirements of different products.

[0075] In an optional embodiment, the container leakage defect detection device further includes an image recognition mechanism for monitoring images of the liquid in the water tank 7 to identify whether bubbles have formed in the liquid. In this embodiment, machine recognition of bubbles via the image recognition mechanism reduces the burden of visual observation on the operator and avoids missed detections due to operator negligence.

[0076] In an optional embodiment, the image recognition mechanism includes a high-definition camera and an image processing system. The high-definition camera is mounted outside the water tank, pointed at areas where the product may leak. The image processing system uses deep learning algorithms to analyze the images captured by the camera in real time, identify whether air bubbles appear in the water, and mark the locations of the bubbles, assisting operators in quickly locating the leak point.

[0077] In an optional embodiment, the material of the pressure rod 21 is less hard than metal, for example, it can be engineering plastic, or one end of the pressure rod 21 is provided with a rubber pad for contacting the product 5 to prevent damage to the surface of the product 5.

[0078] In an optional embodiment, the container leakage defect detection device further includes an alarm electrically connected to the pressure sensor 4. The alarm is used to alert the operator when an abnormal pressure drop is detected, reminding them to check for bubble formation; or to alert the operator when no pressure change is detected at the end of the pressure holding process, reminding them that the test is complete. Corresponding indicator lights can also be provided to indicate the type of alarm. For example, a red indicator light illuminating simultaneously with an alarm indicates an abnormal pressure drop, while a green indicator light illuminating simultaneously with an alarm indicates the test is complete.

[0079] Example 2

[0080] This embodiment provides an example of the detection process of the container leakage defect detection device in Embodiment 1. When using this container leakage defect detection device, the product 5 to be tested is first placed on the placement area 11 of the platform 1. The rotating drive unit drives the pressure rod 21 to rotate to the first position, so that the pressure rod 21 is above the product 5. Then, the lifting drive unit drives the pressure rod 21 downwards, pressing the product 5 firmly onto the platform 1. Next, the air supply assembly 3 introduces gas into the product 5 through the control valve 31 until the internal air pressure reaches a preset value, for example, 40 kPa. The pressure sensor 4 monitors the internal air pressure of the product 5 in real time. When the air pressure reaches the preset value, the control valve 31 closes, cutting off the air supply. The water tank lifting mechanism 8 drives the water tank 7 to rise, completely immersing the product 5 in water. At this time, the reading of the pressure sensor 4 is observed. If there is a significant leak in the product 5, the pressure will drop rapidly; if the pressure remains stable, the operator observes whether bubbles are generated around the product 5 inside the water tank 7. If bubbles are observed, it indicates that there is a leak in the product 5; if no bubbles are generated, it indicates that the product is well-sealed and has no leakage defects. After the test is completed, the water tank lifting mechanism 8 drives the water tank 7 to descend, the lifting drive component drives the pressure rod 21 to rise, and the rotating drive component drives the pressure rod 21 to rotate to the second position, and the product 5 is taken out, completing one test.

[0081] Based on the above-described preferred embodiments according to this application, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this application. The technical scope of this application is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A container leakage defect detection device, characterized in that, include: The platform (1) includes a placement area (11) for placing the product (5) to be tested. A fixing component (2) is installed on the platform (1) for fixing the product (5) placed in the placement area (11) and pressing the product against the platform (1); Gas supply component (3) is used to introduce gas into the product (5) and achieve a preset gas pressure value; Pressure sensor (4) is used to measure the air pressure inside the product (5); A water tank (7) is used to store liquid for the product (5) to be submerged in the liquid to detect whether there is a gas leak; The fixing component (2) includes: A pressure bar (21) is used to abut against one side of the product (5); A rotating drive is used to drive the pressure rod (21) to rotate along a plane parallel to the platform (1); the pressure rod (21) can reach at least a first position and a second position under the drive of the rotating drive; when the pressure rod (21) is in the first position, the projection of the pressure rod (21) along the direction perpendicular to the platform (1) coincides at least partially with the placement area (11); when the pressure rod (21) is in the second position, the projection of the pressure rod (21) along the direction perpendicular to the platform (1) does not coincide with the placement area (11); A lifting drive is used to move the pressure rod (21) in a direction perpendicular to the platform (1) so that the pressure rod (21) presses the product (5) against the platform (1).

2. The container leakage defect detection device according to claim 1, characterized in that, The platform (1) includes: platform body (10); A sealing gasket (12) is fixed to the surface of the platform body (10), and the placement area (11) is formed on the sealing gasket (12).

3. The container leakage defect detection device according to any one of claims 1-2, characterized in that, The container leakage defect detection device also includes a water tank lifting mechanism (8), which is used to move the water tank (7) closer to or away from the platform (1) so that the product (5) is immersed in the water tank (7) or detached from the water tank (7).

4. The container leakage defect detection device according to claim 3, characterized in that, The sidewall of the water tank (7) is made of a transparent panel or has a viewing window.

5. The container leakage defect detection device according to claim 4, characterized in that, The container leakage defect detection device also includes a searchlight, which is disposed on at least one side of the water tank (7) for illuminating the interior of the water tank (7).

6. The container leakage defect detection device according to claim 3, characterized in that, The container leakage defect detection device also includes a platform support (9), which includes a support body (91) and a platform connecting rod (92). One end of the platform connecting rod (92) is connected to the edge of the platform (1) to support the platform (1), and the other end of the platform connecting rod (92) is connected to the support body (91). A gap (93) is formed between the support body (91) and the platform connecting rod (92) for the side wall of the water tank (7) to pass through.

7. The container leakage defect detection device according to any one of claims 1-2, characterized in that, The gas supply assembly (3) also includes a control valve (31) for cutting off the gas supply to the gas inlet of the product (5) after it has been filled with gas.

8. The container leakage defect detection device according to any one of claims 1-2, characterized in that, The container leakage defect detection device also includes a pressure regulating valve (6), which is connected to the gas supply assembly (3) and is used to regulate the pressure of the gas output by the gas supply assembly (3).

9. The container leakage defect detection device according to any one of claims 1-2, characterized in that, The container leakage defect detection device also includes an image recognition mechanism, which is used to monitor the image of the liquid in the water tank (7) to identify whether the liquid produces bubbles.

Images