Pipe airtightness detection joint assembly and detection device

Abstract

The utility model relates to the technical field of pipe fitting air tightness detection, and more specifically relates to a pipe fitting air tightness detection joint assembly and a detection device.The pipe fitting air tightness detection joint assembly comprises an air inlet joint and a plugging joint which are respectively connected to two ends of a pipe fitting, the air inlet joint and the plugging joint are independently arranged, and the positions of the air inlet joint and the plugging joint are adjustable; and the distance between the two is adjustable. The utility model aims to overcome the defect that pipe fitting detection equipment in the prior art cannot detect asymmetric pipe fittings or bent pipe fittings, provides the pipe fitting airtightness detection joint assembly and the detection device, can perform airtightness detection on the asymmetric pipe fittings or the bent pipe fittings, and is simple in structure, flexible to use and high in detection efficiency. The operation is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of airtight detection of pipe fittings, and more specifically, to an airtight detection joint assembly and a detection device for pipe fittings. Background Art

[0002] The production of pipe fittings requires processes such as cutting, forming of pipes, welding of pipe fittings with pipe fittings or pipe fittings with screw threads, followed by airtight testing, polishing, cleaning and packaging. Among them, the leakage detection of products is an important process because pipe fittings are used in occasions where fluids, namely gases and liquids, are transported. Products cannot have perforations because once leakage occurs, the assembled pipeline needs to be partially or even completely scrapped, which will cause great quality problems and engineering losses. Therefore, leakage detection is of utmost importance. Common leakage detection methods include: special airtight testing equipment, which conducts tests through direct pressure or differential pressure. The detection methods all refer to the national standard regulations for introducing air pressure into products. After reaching the set time and pressure value, the change of the pressure value is observed within a certain period. If it does not exceed the judgment value, it is qualified, otherwise it is unqualified. The above testing methods are generally used for standard conventional products (i.e., products with standard dimensions and mass production). However, in actual production, occasionally non-standard orders are received, where the external dimensions of the products are asymmetric and the products are not in a straight line. Such products are often not suitable for standard leakage detection machines, and even if they are, fixtures need to be made or the equipment needs to be extensively modified. This will undoubtedly increase the costs of enterprises. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiency that the existing pipe fitting detection equipment cannot detect asymmetric or bent pipe fittings, and to provide an airtight detection joint assembly and a detection device for pipe fittings, which can conduct airtight detection on asymmetric or bent pipes, with a simple structure, flexible use and convenient operation.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is:

[0005] Provide an airtight detection joint assembly for pipe fittings, including an air inlet joint and a plugging joint respectively connected to both ends of the pipe fitting. The air inlet joint and the plugging joint are both independently arranged, their positions are adjustable, and the distance between them is adjustable.

[0006] In this invention, one end of the air inlet connector is connected to an air source, and the other end is connected to one end of the pipe fitting; one end of the sealing connector is connected to the other end of the pipe fitting, and the other end of the sealing connector is sealed. By introducing air into the pipe fitting through the air inlet connector and sealing it with the sealing connector, the pressure change of the pipe fitting is tested over a period of time to detect whether the pipe fitting is leaking. The air inlet connector and the sealing connector in this invention are independently configured, and their positions and distances can be changed by adjusting their positions. Compared to the fixed air inlet connector and sealing connector in the prior art, the configuration of this invention is more flexible. Therefore, it can be applied to non-linear pipe fittings, including but not limited to pipe fittings with multiple bending angles or asymmetrical pipe fittings. Simply connecting the air inlet connector and the sealing connector at both ends of the pipe fitting respectively can achieve airtightness testing of the pipe fitting, which is simple to operate and has high testing efficiency. The pipe diameters corresponding to conventional air inlet and sealing connectors are fixed. Therefore, this invention is applicable to the airtightness testing of pipes with constant diameters but different lengths or bending angles. Within the knowledge of those skilled in the art, if the air inlet and sealing connectors of this invention are configured to be adaptively adjusted according to the pipe diameter, this invention can also be applied to the airtightness testing of pipes with different diameters. Here, different pipe diameters include the case where the diameters at both ends of the same pipe are different, as well as the case where different pipes have different diameters.

[0007] Furthermore, the intake connector includes a first male connector and a first female connector connected to each other. The first male connector and the first female connector are internally connected, and both ends of the first male connector and the first female connector are open structures. The sealing connector includes a second male connector, a second female connector, and a plug. The second male connector and the second female connector are connected and internally connected, and both ends of the second male connector and the second female connector are open structures. The plug is inserted into the second female connector and seals its open structure. Here, the second male connector can adopt the same structure as the first male connector, and the second female connector can adopt the same structure as the first female connector. The plug is used to seal the second female connector to achieve end sealing.

[0008] Furthermore, the air inlet connector also includes a first sealing element, which is installed inside the first male connector. The first female connector is threadedly connected to the first male connector and abuts against the end of the first sealing element. The sealing connector also includes a second sealing element, which is installed inside the second male connector. The second female connector is threadedly connected to the second male connector and abuts against the end of the second sealing element. Both the first and second sealing elements serve a sealing function, increasing the airtightness of the entire airtightness detection device and improving the accuracy of the detection.

[0009] Furthermore, the first female connector is also inserted into the first male connector, and the second female connector is also inserted into the second male connector. This arrangement improves the connection reliability between the first female connector and the first male connector, and between the second female connector and the second male connector.

[0010] Furthermore, the end of the first female connector that abuts against the first seal and / or the end of the second female connector that abuts against the second seal are provided with a first inclined surface for pressing. The first inclined surface allows for pressing of the first and second seals, further improving the airtightness.

[0011] Furthermore, the end of the first seal that abuts against the first female connector and / or the end of the second seal that abuts against the second female connector are provided with a second inclined surface with an angle equal to that of the first inclined surface. The second inclined surface is used to cooperate with the first inclined surface to enhance the clamping effect between the first female connector and the first seal, and between the second female connector and the second seal, thereby improving the airtightness of the air inlet connector and the sealing connector, and thus improving the accuracy of the detection.

[0012] Furthermore, the first male connector has a limiting step located at the end of the first seal away from the first female connector, and / or the second male connector has a limiting step located at the end of the second seal away from the second female connector. The limiting step in the first female connector for contact with the pipe fitting and / or the limiting step in the second female connector for contact with the pipe fitting are both provided. The limiting step in the first male connector is used to limit the first seal, preventing it from detaching from the first male connector. Similarly, the limiting step in the second male connector is used to limit the second seal, preventing it from detaching from the second male connector. The limiting steps in the first and second female connectors are used to limit both ends of the pipe fitting, allowing the pipe fitting to connect well with the air inlet connector and the sealing connector.

[0013] Furthermore, the air inlet connector includes a first male connector and a first female connector connected to each other, the first male connector and the first female connector being internally connected, and both ends of the first male connector and the first female connector being open structures; the sealing connector includes a second male connector and a second female connector connected to each other, the second male connector and the second female connector being internally connected, the second male connector having an open structure at one end, and the second female connector having a closed structure at one end. The first male connector and the second male connector are respectively used to connect to both ends of the pipe fitting, the first female connector is used to connect to the air source, and the second female connector is used for sealing.

[0014] Furthermore, the air inlet connector also includes a pneumatic connector, which is threadedly connected to the first female connector. The pneumatic connector is used to connect to an air source, facilitating air supply.

[0015] This utility model also provides a pipe fitting airtightness testing device, including the pipe fitting airtightness testing connector assembly as described above and an air source, wherein the air source is connected to the air inlet connector. The air source enters the pipe fitting through the air inlet connector, and is then sealed by the sealing connector to test the airtightness of the pipe fitting over a period of time.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention features simple operation, high safety, good compatibility, and high efficiency. It is extremely convenient to use; the operator only needs to connect one end of the pipe to the air inlet connector and the other end to the sealing connector. Limiting steps within the first and second female connectors restrict the movement of both ends of the pipe. The first sealing element seals the inside of the air inlet connector, and the second sealing element ensures the airtightness of the sealing connector. Furthermore, the first and second inclined surfaces work together to enhance the airtightness. The pressure difference across the pipe is tested over a period of time to determine if there is a leak. After testing, the operator simply disconnects the pipe from the air inlet and sealing connectors to easily remove the pipe. This invention is applicable to the airtightness testing of asymmetrical or curved pipes, offering a wide range of applications and flexible use. Attached Figure Description

[0018] Figure 1 This is a first-view structural schematic diagram of a pipe fitting airtightness testing connector assembly in use according to the present invention;

[0019] Figure 2 This is a second-view structural schematic diagram of a pipe fitting airtightness testing connector assembly in use according to the present invention;

[0020] Figure 3 for Figure 2 AA section view;

[0021] Figure 4 for Figure 3 Enlarged view of section B in the middle.

[0022] The markings in the diagram are explained below:

[0023] 1. Air inlet connector; 11. First male connector; 12. First female connector; 13. First seal; 14. Pneumatic connector; 2. Sealing connector; 21. Second male connector; 22. Second female connector; 23. Second seal; 24. Plug; 3. First inclined surface; 4. Second inclined surface; 5. Limiting step; 6. Pipe fitting. Detailed Implementation

[0024] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, 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 drawings, they are only for the convenience of describing this utility model 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 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.

[0026] Example 1

[0027] This utility model is a first embodiment of a pipe fitting airtightness testing connector assembly, which includes an air inlet connector 1 and a sealing connector 2 respectively connected to both ends of the pipe fitting 6. The air inlet connector 1 and the sealing connector 2 are independently set, and their positions and the distance between them are adjustable.

[0028] In this utility model, such as Figures 1 to 3 As shown, one end of the air inlet connector 1 is used to connect to the air source, and the other end is connected to one end of the pipe fitting 6; one end of the sealing connector 2 is connected to the other end of the pipe fitting 6, and the other end of the sealing connector 2 is sealed; by passing air from the air source into the pipe fitting 6 through the air inlet connector 1 and sealing it from the sealing head 24, the pressure change of the pipe fitting 6 is tested over a period of time to detect whether the pipe fitting 6 is leaking. The air inlet connector 1 and the sealing connector 2 of this invention are both independently set, and their positions can be adjusted to change their orientation and distance; for testing straight pipe fittings 6, the air inlet connector 1 and the sealing connector 2 can be set along a straight line; for irregularly shaped pipe fittings 6, the air inlet connector 1 and the sealing connector 2 can be connected to both ends of the pipe fitting 6 respectively; compared with the relatively fixed positions of the air inlet connector 1 and the sealing connector 2 in the prior art, this invention is more flexible and applicable to a wider range of pipe fittings 6.

[0029] In one embodiment of this utility model, the air intake connector 1 includes a first male connector 11 and a first female connector 12 connected to each other. The first male connector 11 and the first female connector 12 are internally connected, and the ends of the first male connector 11 and the first female connector 12 are both open structures. The sealing connector 2 includes a second male connector 21, a second female connector 22, and a plug 24. The second male connector 21 and the second female connector 22 are connected and internally connected, and the ends of the second male connector 21 and the second female connector 22 are both open structures. The plug 24 is inserted into the second female connector 22 and seals its open structure.

[0030] Here, the second male connector 21 can adopt the same structure as the first male connector 11, and the second female connector 22 can adopt the same structure as the first female connector 12, thereby improving the versatility of parts and reducing material accumulation during the production process. The plug 24 is used to seal the second female connector 22 to achieve end sealing. Preferably, the plug 24 can be made of plastic or rubber material.

[0031] As one embodiment of this utility model, such as Figure 4 As shown, the air inlet connector 1 further includes a first sealing element 13, which is installed inside the first male connector 11. The first female connector 12 is threadedly connected to the first male connector 11 and abuts against the end of the first sealing element 13. The sealing connector 2 further includes a second sealing element 23, which is installed inside the second male connector 21. The second female connector 22 is threadedly connected to the second male connector 21 and abuts against the end of the second sealing element 23. Both the first sealing element 13 and the second sealing element 23 serve a sealing function to increase the airtightness of the entire airtightness detection device and improve the accuracy of the detection. Preferably, both the first sealing element 13 and the second sealing element 23 are made of silicone or rubber and are respectively fitted inside the first male connector 11 and the second male connector 21 to achieve sealing between the first male connector 11 and the first female connector 12, and sealing between the second male connector 21 and the second female connector 22.

[0032] In one embodiment of this utility model, the first female connector 12 is also inserted into the first male connector 11, and the second female connector 22 is also inserted into the second male connector 21. While threadedly connected, the insertion of the first female connector 12 into the first male connector 11 enhances the sealing effect of the first sealing member 13; the same principle applies to the arrangement of the second female connector 22.

[0033] In one embodiment of this utility model, the end of the first female connector 12 that abuts against the first sealing member 13 and / or the end of the second female connector 22 that abuts against the second sealing member 23 are provided with a first inclined slope 3 for pressing. By setting the first inclined slope 3, the first sealing member 13 and the second sealing member 23 can be pressed together, further improving the airtightness.

[0034] In one embodiment of this utility model, the end of the first sealing member 13 that abuts against the first female connector 12 and / or the end of the second sealing member 23 that abuts against the second female connector 22 are provided with a second inclined surface 4 having the same inclination as the first inclined surface 3. The second inclined surface 4 is used to cooperate with the first inclined surface 3 to enhance the pressing effect between the first female connector 12 and the first sealing member 13, and between the second female connector 22 and the second sealing member 23, thereby improving the airtightness of the air inlet connector 1 and the sealing connector 2, and thus improving the accuracy of the detection.

[0035] In one embodiment of this utility model, a limiting step 5 is provided in the first male connector 11 at the end of the first sealing element 13 away from the first female connector 12 and / or in the second male connector 21 at the end of the second sealing element 23 away from the second female connector 22. A limiting step 5 is provided in the first female connector 12 at the point of contact with the pipe fitting 6 and / or in the second female connector 22 at the point of contact with the pipe fitting 6. The limiting step 5 in the first male connector 11 is used to limit the first sealing element 13, preventing it from detaching from the first male connector 11. Similarly, the limiting step 5 in the second male connector 21 is used to limit the second sealing element 23, preventing it from detaching from the second male connector 21. The limiting steps 5 in the first female connector 12 and the second female connector 22 are used to limit both ends of the pipe fitting 6, allowing the pipe fitting 6 to be properly connected to the air inlet connector 1 and the sealing connector 2.

[0036] As one embodiment of the present invention, the air inlet connector 1 also includes a pneumatic connector 14, which is threadedly connected to the first female connector 12.

[0037] Example 2

[0038] The following is a second embodiment of the airtightness testing connector assembly for pipe fittings according to this utility model. This embodiment is similar to embodiment 1, except that the air inlet connector 1 includes a first male connector 11 and a first female connector 12 connected to each other. The first male connector 11 and the first female connector 12 are internally connected, and the ends of the first male connector 11 and the first female connector 12 are both open structures. The sealing connector 2 includes a second male connector 21 and a second female connector 22 connected to each other. The second male connector 21 and the second female connector 22 are internally connected, and the end of the second male connector 21 is an open structure, while the end of the second female connector 22 is a closed structure. The first male connector 11, the first female connector 12, and the second male connector 21 are all provided with through holes in the middle. This arrangement facilitates the connection between the first male connector 11 and the air source, and between the first female connector 12 and the second female connector 22 and the pipe fitting 6. On the other hand, it facilitates the delivery of gas from the air source to the pipe fitting 6.

[0039] Example 3

[0040] The following is an embodiment of a pipe fitting airtightness testing device of the present invention, including the pipe fitting airtightness testing connector assembly and the air source as described above, wherein the air source is connected to the air inlet connector 1.

[0041] The air source is introduced into the pipe fitting 6 through the air inlet connector 1, and then sealed by the sealing connector 2 to test the airtightness of the pipe fitting 6 over a period of time.

[0042] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pipe fitting airtightness testing connector assembly, characterized in that, It includes an air inlet connector (1) and a sealing connector (2) respectively connected to both ends of the pipe fitting (6). The air inlet connector (1) and the sealing connector (2) are independently set, and their positions and the distance between them are adjustable.

2. The pipe fitting airtightness testing connector assembly according to claim 1, characterized in that, The air intake connector (1) includes a first male connector (11) and a first female connector (12) connected to each other. The first male connector (11) and the first female connector (12) are internally connected, and the ends of the first male connector (11) and the first female connector (12) are both open structures. The sealing connector (2) includes a second male connector (21), a second female connector (22), and a plug (24). The second male connector (21) and the second female connector (22) are connected and internally connected, and the ends of the second male connector (21) and the second female connector (22) are both open structures. The plug (24) is inserted into the second female connector (22) and its open structure is sealed.

3. The pipe fitting airtightness testing connector assembly according to claim 2, characterized in that, The air intake connector (1) further includes a first sealing element (13), which is installed inside the first male connector (11). The first female connector (12) is threadedly connected to the first male connector (11) and abuts against the end of the first sealing element (13). The sealing connector (2) further includes a second sealing element (23), which is installed inside the second male connector (21). The second female connector (22) is threadedly connected to the second male connector (21) and abuts against the end of the second sealing element (23).

4. The pipe fitting airtightness testing connector assembly according to claim 3, characterized in that, The first female connector (12) is also connected to the first male connector (11), and the second female connector (22) is also connected to the second male connector (21).

5. The pipe fitting airtightness testing connector assembly according to claim 3 or 4, characterized in that, The end of the first female connector (12) that abuts against the first seal (13) and / or the end of the second female connector (22) that abuts against the second seal (23) are provided with a first inclined slope (3) for pressing.

6. The pipe fitting airtightness testing connector assembly according to claim 5, characterized in that, The end of the first seal (13) that abuts against the first female connector (12) and / or the end of the second seal (23) that abuts against the second female connector (22) are provided with a second inclined surface (4) with an inclination equal to that of the first inclined surface (3).

7. The pipe fitting airtightness testing connector assembly according to claim 6, characterized in that, The first male connector (11) is located at the end of the first seal (13) away from the first female connector (12) and / or the second male connector (21) is located at the end of the second seal (23) away from the second female connector (22). The first female connector (12) and / or the second female connector (22) are provided with limiting steps (5) at the part for contacting the pipe fitting (6).

8. The pipe fitting airtightness testing connector assembly according to claim 1, characterized in that, The air intake connector (1) includes a first male connector (11) and a first female connector (12) connected to each other. The first male connector (11) and the first female connector (12) are internally connected, and the ends of the first male connector (11) and the first female connector (12) are both open structures. The sealing connector (2) includes a second male connector (21) and a second female connector (22) connected to each other. The second male connector (21) and the second female connector (22) are internally connected, and the end of the second male connector (21) is an open structure, while the end of the second female connector (22) is a closed structure.

9. The pipe fitting airtightness testing connector assembly according to claim 2 or 8, characterized in that, The air inlet connector (1) also includes a pneumatic connector (14), which is threadedly connected to the first female connector (12).

10. A pipe fitting airtightness testing device, characterized in that, It includes the pipe fitting airtightness test connector assembly as described in any one of claims 1 to 9, and an air source, wherein the air source is connected to the air inlet connector (1).

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