Pipeline joint sealing performance detection device
By designing a pipe joint sealing performance testing device that combines bubble detection and high-precision sensors, the problems of traditional testing methods relying on manual judgment and non-adjustable angles are solved, enabling rapid and accurate testing of pipe joint sealing performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-07
- Publication Date
- 2026-03-17
AI Technical Summary
Traditional pipe joint sealing testing devices rely on manual observation of air bubbles, lack objective and unified standards, and cannot be flexibly adjusted to adapt to pipe joints at different angles, resulting in inaccurate test results and poor applicability.
A device comprising a testing platform, an airtightness tester, a pipe clamping mechanism, and a drive mechanism was designed. Combining bubble detection and high-precision sensors, the device achieves flexible clamping and precise pressure measurement of pipe joints through rotation and angle adjustment of the pipe clamping mechanism, ensuring comprehensive and accurate testing.
It enables rapid preliminary qualitative judgment and accurate measurement of pipe joint sealing performance, improving the accuracy and applicability of the test. It can quickly screen out leakage problems and record data, providing a basis for quality control.
Smart Images
Figure CN224004594U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pipe joint manufacturing technology, specifically referring to a pipe joint sealing performance testing device. Background Technology
[0002] Pipeline systems play a vital role in many fields such as modern industry, construction, and energy transmission. As a key component connecting different pipeline sections, the sealing performance of pipe joints directly affects the safe and efficient operation of the entire pipeline system. Once the sealing of a pipe joint fails, it may lead to media leakage, causing serious consequences such as environmental pollution, energy waste, production interruption, or even safety accidents.
[0003] Traditional pipe joint sealing testing devices mostly rely on manual observation of air bubbles. This method is highly dependent on the subjective judgment of the testers and lacks objective and unified standards. The test results of different people may have large deviations, resulting in inaccurate air tightness test data. Moreover, traditional pipe joint sealing testing devices usually cannot be flexibly adjusted for pipe joints at different angles, resulting in poor applicability and failing to better fit the pipe joint to ensure a good seal during the test. Utility Model Content
[0004] To address the problems mentioned above, traditional pipe joint sealing testing devices often rely on manual observation of air bubbles and are generally unable to flexibly adjust to pipe joints at different angles, this invention provides a pipe joint sealing testing device.
[0005] To achieve the above functions, the technical solution adopted by this utility model is as follows: a pipe joint sealing test device, including a test platform and an airtightness tester, wherein the airtightness tester is installed on one side of the test platform, and a test groove is provided on the other side of the test platform. An L-shaped support plate is fixed on the side of the test platform, and a driving mechanism is provided on the L-shaped support plate. A rotating rod is laterally rotatably arranged in the test groove, and a pipe clamping mechanism is provided on the rotating rod. The driving mechanism drives the pipe clamping mechanism to rotate through the rotating rod.
[0006] The pipe clamping mechanism includes a lower U-shaped bracket fixed vertically on a rotating rod and an upper U-shaped bracket hinged inside the lower U-shaped bracket via a rotating shaft. The lower U-shaped bracket is fixedly connected to a pipe clamp, and the upper U-shaped bracket is provided with a movable pipe clamp. The pipe joint is inserted and fixed to the pipe clamps on both sides.
[0007] As a preferred technical solution of this utility model, the driving mechanism includes a motor, a first gear and a second gear fixed on an L-shaped support plate. The first gear and the second gear are rotatably mounted on the side of the testing table via a central shaft. The first gear and the second gear are meshed together. The output end of the motor is connected to the central shaft of the first gear. The central shaft of the second gear passes through the side of the testing table and is connected to a rotating rod.
[0008] As a preferred embodiment of this utility model, the pipe clamping mechanism further includes a cylinder vertically fixed on the upper U-shaped support, a pressure plate horizontally disposed inside the upper U-shaped support, a plurality of upper fixing blocks uniformly fixed at the bottom of the pressure plate, and a plurality of lower fixing blocks uniformly fixed inside the lower U-shaped support. The movable end of the cylinder moves through the middle of the upper U-shaped support and is connected to the pressure plate at its end. The cylinder drives the pressure plate to move up and down inside the upper U-shaped support. The lower fixing blocks are arranged in a one-to-one correspondence with the upper fixing blocks. The pipe clamp is installed on the upper fixing blocks and the lower fixing blocks. Air pipes are respectively provided on the upper fixing blocks and the lower fixing blocks. One end of the air pipe passes through the interior of the upper fixing blocks and the lower fixing blocks and is connected to the pipe clamp. The other end of the air pipe is connected to two air paths. One of the air paths is connected to an external air source, and the other air path is connected to an airtightness tester.
[0009] As a preferred embodiment of this utility model, the lower U-shaped bracket is threaded with a locking bolt on its side, and the end of the locking bolt abuts against a rotating shaft on one side.
[0010] As a preferred technical solution of this utility model, a vertical auxiliary telescopic rod is fixedly provided on the inner side wall of the upper U-shaped bracket. The movable end of the auxiliary telescopic rod is fixedly connected to the pressure plate. Two sets of auxiliary telescopic rods are provided correspondingly and are located on both sides of the movable end of the cylinder.
[0011] As a preferred embodiment of this utility model, a water injection pipe with a shut-off valve is fixedly inserted through the side of the detection tank, the water injection pipe is connected to an external water pump, and a water outlet pipe with a shut-off valve is fixedly inserted through the bottom of the detection tank.
[0012] Compared with the prior art, the present invention achieves the following beneficial effects by adopting the above structure:
[0013] 1. By combining the clamping mechanism and the airtightness tester, the clamping mechanism is rotated into the test chamber. Air is introduced into the pipe through an external air source, and the generation of bubbles in the test chamber is observed using the bubble detection method to make a preliminary qualitative judgment on the airtightness of the pipe joint. This allows for the rapid identification of significant leakage problems. After the preliminary test, the clamping mechanism is reset, and the airtightness tester begins to work. It injects nitrogen gas at a set pressure into the pipe joint. The high-precision sensor inside the airtightness tester can monitor this pressure change in real time, thereby accurately measuring the joint's sealing performance, determining whether there is a leak, calculating the leakage amount, and recording the data. This provides a basis for subsequent quality control. This complements the bubble detection method, ensuring comprehensive and accurate airtightness testing.
[0014] 2. By coordinating the lower U-shaped bracket, upper U-shaped bracket, and locking bolts, loosening the locking bolts and adjusting the clamping angle of the upper and lower U-shaped brackets according to the pipe joint to be tested, airtightness testing can be performed on pipe joints with different end interface angles. This allows for flexible adjustment of the angle of the pipe clamps between the upper and lower U-shaped brackets, thereby improving the applicability of the pipe joint sealing test device, facilitating better fit of the pipe clamps to the pipe joint, ensuring good sealing during the test, and thus accurately testing airtightness. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of a pipe joint sealing performance testing device proposed in this utility model. Figure 1 ;
[0016] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;
[0017] Figure 3 This is a schematic diagram of the overall structure of a pipe joint sealing performance testing device proposed in this utility model. Figure 2 ;
[0018] Figure 4 This is a schematic diagram of the overall structure of a pipe joint sealing performance testing device proposed in this utility model. Figure 3 .
[0019] The components include: 1. Testing platform; 2. Air tightness tester; 3. Testing slot; 4. L-shaped support plate; 5. Drive mechanism; 6. Rotating rod; 7. Pipe clamping mechanism; 8. Motor; 9. Gear 1; 10. Gear 2; 11. Lower U-shaped bracket; 12. Upper U-shaped bracket; 13. Cylinder; 14. Pressure plate; 15. Upper fixing block; 16. Lower fixing block; 17. Pipe clamp; 18. Air pipe; 19. Locking bolt; 20. Auxiliary telescopic rod; 21. Water injection pipe; 22. Water outlet pipe. Detailed Implementation
[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.
[0022] like Figure 1-4 As shown, the present invention provides a pipe joint sealing test device, including a test platform 1 and an airtightness tester 2. The airtightness tester 2 is installed on one side of the test platform 1, and a test groove 3 is opened on the other side of the test platform 1. A water injection pipe 21 with a shut-off valve is fixedly inserted through the side of the test groove 3. The water injection pipe 21 is connected to an external water pump. A water outlet pipe 22 with a shut-off valve is fixedly inserted through the bottom of the test groove 3 to facilitate water injection and drainage into the test groove 3. An L-shaped support plate 4 is fixedly installed on the side of the test platform 1. A drive mechanism 5 is provided on the L-shaped support plate 4. A rotating rod 6 is rotatably arranged in the test groove 3. A pipe clamping mechanism 7 is provided on the rotating rod 6.
[0023] The pipe clamping mechanism 7 includes a lower U-shaped support 11 vertically fixed on a rotating rod 6 and an upper U-shaped support 12 hinged inside the lower U-shaped support 11 via a rotating shaft. A pipe clamp 17 is fixed to the lower U-shaped support 11, and the upper U-shaped support 12 is equipped with a movable pipe clamp 17. A pipe connector is inserted and fixed onto the pipe clamps 17 on both sides. The driving mechanism 5 drives the pipe clamping mechanism 7 to rotate via the rotating rod 6, thereby causing the lower U-shaped support 11, the upper U-shaped support 12, and the pipe connector mounted on the pipe clamps 17 on both sides to rotate into the water-filled detection tank 3, facilitating observation and detection. The generation of air bubbles in tank 3 is used to make a preliminary qualitative judgment on the airtightness of the pipe joint, thereby quickly identifying obvious leakage problems. After the preliminary test is completed, the clamping mechanism 7 is reset, and the airtightness tester 2 starts working. It injects nitrogen gas at a set pressure into the pipe joint and monitors the pressure changes inside the pipe joint in real time through its internal high-precision sensor, thereby accurately measuring the joint's sealing performance, determining whether there is a leak, calculating the leakage amount, and recording the data to provide a basis for subsequent quality control. This complements the bubble detection method to ensure comprehensive and accurate airtightness testing.
[0024] like Figure 1-4 As shown, the drive mechanism 5 includes a motor 8, a first gear 9, and a second gear 10 fixed on the L-shaped support plate 4. The first gear 9 and the second gear 10 are rotatably mounted on the side of the testing table 1 via a central shaft. The first gear 9 and the second gear 10 are meshed together. The output end of the motor 8 is connected to the central shaft of the first gear 9. The central shaft of the second gear 10 passes through the side of the testing table 1 and is connected to the rotating rod 6. When the motor 8 is started, its output end drives the first gear 9 to rotate, thereby driving the rotation of the second gear 10, which in turn drives the rotation of the rotating rod 6. The rotation of the rotating rod 6 drives the clamping mechanism 7 to rotate.
[0025] like Figure 1-4As shown, the pipe clamping mechanism 7 also includes a cylinder 13 vertically fixed on the upper U-shaped bracket 12, a pressure plate 14 horizontally disposed inside the upper U-shaped bracket 12, several upper fixing blocks 15 evenly fixed at the bottom of the pressure plate 14, and several lower fixing blocks 16 evenly fixed inside the lower U-shaped bracket 11. The movable end of the cylinder 13 moves through the middle of the upper U-shaped bracket 12 and is connected to the pressure plate 14. The cylinder 13 drives the pressure plate 14 to move up and down inside the upper U-shaped bracket 12. The inner wall of the upper U-shaped bracket 12... A vertical auxiliary telescopic rod 20 is fixedly provided, and the auxiliary telescopic rod 20 is fixedly connected to the pressure plate 14. Two sets of auxiliary telescopic rods 20 are correspondingly provided and located on both sides of the movable end of the cylinder 13, so as to provide a stable auxiliary support force for the telescopic movement of the cylinder 13. The lower fixed block 16 and the upper fixed block 15 are provided one-to-one. The pipe clamp 17 is installed on the upper fixed block 15 and the lower fixed block 16. The upper fixed block 15 and the lower fixed block 16 are respectively provided with air pipes 18, one end of the air pipe 18 passing through the upper fixed block 15. The pipe 18 is connected to the pipe clamp 17 inside the lower fixed block 16 and the pipe joint 18. The other end of the pipe 18 is connected to two air paths. One air path is connected to an external air source, and the other air path is connected to the air tightness tester 2. One end of the pipe joint is fitted onto the pipe clamp 17 on the lower U-shaped bracket 11, and the other end of the pipe joint is aligned with the pipe clamp 17 on the upper U-shaped bracket 12. The cylinder 13 is activated, and its movable end extends, pushing the pressure plate 14 downward until the other end of the pipe joint is fitted onto the upper pipe clamp 17, thereby achieving the insertion and fixation of both sides of the pipe joint. Then, the clamping mechanism 7 is rotated into the test groove 3, and air is supplied to one of the air paths of the pipe 18 through the external air source. Pipe joints with serious air leakage will produce obvious bubbles in the test groove 3. By observing the generation of bubbles in the test groove 3, it is easy to quickly find obvious leakage problems, thereby screening out these unqualified products in the preliminary testing stage and improving testing efficiency.
[0026] like Figure 1 , 3 As shown in Figure 4, a locking bolt 19 is threadedly connected to the side of the lower U-shaped bracket 11. The end of the locking bolt 19 abuts against a rotating shaft on one side. By loosening the locking bolt 19, the clamping angle between the upper U-shaped bracket 12 and the lower U-shaped bracket 11 can be adjusted according to the pipe joint to be tested. This allows for the airtightness testing of pipe joints with different end interface angles. It also facilitates flexible adjustment of the angle of the pipe clamp 17 between the upper U-shaped bracket 12 and the lower U-shaped bracket 11, thereby improving the applicability of the pipe joint sealing test device. This allows the pipe clamp 17 to better fit the pipe joint, ensuring a good seal during the test and thus accurately testing the airtightness.
[0027] In practical use, water is injected into the detection tank 3 through the water injection pipe 21 via an external water pump. The locking bolt 19 is loosened. The clamping angle between the upper U-shaped bracket 12 and the lower U-shaped bracket 11 is adjusted according to the pipe joint to be detected. One end of the pipe joint is fitted onto the pipe clamp 17 on the lower U-shaped bracket 11. The other end of the pipe joint is aligned with the pipe clamp 17 on the upper U-shaped bracket 12. The cylinder 13 is activated, and its movable end extends, pushing the pressure plate 14 downwards until the other end of the pipe joint is fitted onto the upper pipe clamp 17, thus achieving the insertion and fixation of both sides of the pipe joint. The motor 8 is then started to clamp... The pipe clamping mechanism 7 rotates into the detection tank 3, and air is supplied to one of the air paths of the air pipe 18 through an external air source. Pipe joints with serious leaks will generate obvious bubbles in the detection tank 3, thus screening out these unqualified products in the preliminary detection stage. After the preliminary detection is completed, the clamping mechanism 7 is reset, and the air tightness tester 2 starts to work. It injects nitrogen at a set pressure into the pipe joint through another air path of the air pipe 18. The high-precision sensor in the air tightness tester 2 can monitor the pressure change inside the pipe joint in real time, thereby accurately measuring the joint sealing performance, determining whether there is a leak, calculating the leakage amount, and recording the data to ensure comprehensive and accurate air tightness testing.
[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A pipeline joint sealing detection device, comprising a detection table (1) and an air tightness detector (2), the air tightness detector (2) is arranged on one side of the detection table (1), characterized in that: The other side of the detection table (1) is provided with a detection groove (3), the side of the detection table (1) is fixedly provided with an L-shaped support plate (4), the L-shaped support plate (4) is provided with a driving mechanism (5), the detection groove (3) is transversely rotatably provided with a rotating rod (6), the rotating rod (6) is provided with a pipe clamping mechanism (7), and the driving mechanism (5) drives the pipe clamping mechanism (7) to rotate through the rotating rod (6). The pipe clamping mechanism (7) comprises a lower U-shaped support (11) vertically fixed on the rotating rod (6), an upper U-shaped support (12) hingedly connected in the lower U-shaped support (11) through a rotating shaft, a pipe clamp (17) fixedly connected to the lower U-shaped support (11), and a pipe clamp (17) movably arranged on the upper U-shaped support (12), and a pipe joint is fixedly connected to the pipe clamps (17) on both sides. The pipe clamping mechanism (7) further comprises a gas cylinder (13) vertically fixed on the upper U-shaped support (12), a pressing plate (14) transversely arranged in the upper U-shaped support (12), a plurality of upper fixing blocks (15) uniformly fixed on the bottom of the pressing plate (14), a plurality of lower fixing blocks (16) uniformly fixed in the lower U-shaped support (11), the movable end of the gas cylinder (13) moves through the middle of the upper U-shaped support (12), and the end is connected to the pressing plate (14), the gas cylinder (13) drives the pressing plate (14) to move up and down in the upper U-shaped support (12), the lower fixing blocks (16) and the upper fixing blocks (15) are correspondingly arranged, the pipe clamps (17) are arranged on the upper fixing blocks (15) and the lower fixing blocks (16), and the upper fixing blocks (15) and the lower fixing blocks (16) are respectively provided with air pipes (18), one end of the air pipe (18) penetrates the inside of the upper fixing block (15) and the lower fixing block (16), and is communicated with the pipe clamp (17), the other end of the air pipe (18) is connected with two air paths, one of the air paths is communicated with the external gas source, and the other of the air paths is communicated with the gas tightness detector (2).
2. The device of claim 1, wherein: The driving mechanism (5) comprises a motor (8) fixedly arranged on the L-shaped support plate (4), a gear one (9) and a gear two (10), the gear one (9) and the gear two (10) are rotatably arranged on the side of the detection table (1) through a center shaft, the gear one (9) and the gear two (10) are meshingly arranged, the output end of the motor (8) is connected to the center shaft of the gear one (9), and the center shaft of the gear two (10) penetrates the side of the detection table (1) and is connected to the rotating rod (6).
3. The device of claim 1, wherein: The side of the lower U-shaped support (11) is threadedly connected with a locking bolt (19), and the end of the locking bolt (19) abuts against the rotating shaft on one side.
4. The device of claim 1, wherein: The inner side wall of the upper U-shaped support (12) is fixedly provided with a vertical auxiliary telescopic rod (20), the movable end of the auxiliary telescopic rod (20) is fixedly connected with the pressing plate (14), and the auxiliary telescopic rod (20) is correspondingly provided with two groups and located on both sides of the movable end of the gas cylinder (13).
5. The device of claim 1, wherein: The side of the detection groove (3) is fixedly provided with a water injection pipe (21) with a stop valve, the water injection pipe (21) is connected with an external water pump, and the bottom of the detection groove (3) is fixedly provided with a water outlet pipe (22) with a stop valve.