Pressure pipeline leakage point detection device

Abstract

The utility model relates to a pressure pipeline leakage point detection device, which belongs to the technical field of pipeline detection and comprises a mounting groove, a moving frame, a driving mechanism, a bearing seat and a rotating shaft, a pressing disc is fixed at the inner end of the rotating shaft, an air passage is arranged in the rotating shaft at the left end, a sealing gasket is fixed on the inner side wall of the pressing disc, and the inner end of the air passage extends to the inner end face of the sealing gasket. The rotating shaft is connected with a power mechanism driving the rotating shaft to rotate, a rotating connector is fixed to the outer end of the rotating shaft at the left end, an air delivery pipe is fixed to the other end of the rotating connector, an air pump is fixed to the other end of the air delivery pipe, and a valve and a pressure gauge are arranged on the air delivery pipe. Through the pressing discs on the two sides and the driving mechanism for driving the two pressing discs to be close to and far away from each other, the sealing gaskets and the rotating joints which are arranged on the pressing discs are matched, the gas conveying pipe is fixed at the other end of each rotating joint, and the gas pump is fixed at the other end of each gas conveying pipe, so that the pressure pipeline detection device can adapt to detection of pressure pipelines with different diameters and lengths and is simple and rapid to operate; and the detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a pressure pipeline leak detection device, belonging to the field of pipeline inspection technology. Background Technology

[0002] In industrial production, pressure pipelines are widely used to transport various fluid media, and their safety is of paramount importance. A leak in a pressure pipeline can not only lead to media leakage and economic losses, but may also cause safety accidents. Currently, existing pressure pipeline leak detection devices typically require a fixed connection between the detection equipment and the pressure pipeline during the detection process. For pressure pipelines of different diameters, various connection components of different specifications are needed, making the replacement process cumbersome, inconvenient to operate, and resulting in low detection efficiency. Utility Model Content

[0003] This invention provides a pressure pipeline leak detection device, which solves the problems existing in the above-mentioned background technology.

[0004] This utility model relates to a pressure pipeline leak detection device, including an installation groove, with movable frames at both ends of the installation groove. The movable frames are connected to a drive mechanism that drives them to move in the left and right directions. A bearing seat is fixed on the top of the movable frame, and a rotating shaft is rotatably mounted on the bearing seat. A pressure plate is fixed to the inner end of the rotating shaft. An air passage is provided inside the rotating shaft at the left end. A sealing gasket is fixed on the inner side wall of the pressure plate. The inner end of the air passage extends to the inner end face of the sealing gasket. The rotating shaft is connected to a power mechanism that drives it to rotate. A rotary joint is fixed to the outer end of the rotating shaft at the left end. An air supply pipe is fixed to the other end of the rotary joint. An air pump is fixed to the other end of the air supply pipe. A valve and a pressure gauge are provided on the air supply pipe.

[0005] As a preferred embodiment, the drive mechanism includes a movable slide plate fixed to the bottom of the movable frame. A movable slider is fixed to the bottom of the movable slide plate, and a movable slide rail is connected to the bottom of the movable slider. The movable slide rail is fixed to a mounting groove. A nut is fixedly connected to the movable slide plate, and a lead screw is connected to the nut. The lead screw is rotatably mounted in the mounting groove, and a drive motor is fixed to the outer end of the lead screw. The rotation of the drive motor drives the lead screw to rotate, thereby causing the movable slide plate to move left and right along the movable slide rail via the nut, adjusting the position of the pressure plate.

[0006] As a preferred embodiment, the power mechanism includes a rotary motor fixed on a movable frame. A drive gear is fixed to the output shaft of the rotary motor, and the drive gear meshes with a driven gear fixed to a rotating shaft. Rotation of the rotary motor drives the drive gear, which in turn drives the driven gear, thereby causing the rotating shaft to rotate.

[0007] As a preferred embodiment, an infusion tube is provided on the inner side of the clamping plates at both ends, and a nozzle is fixed to the outer side of the infusion tube. A height adjustment device is connected to the upper outer side of the infusion tube, and an infusion hose is fixed to the outer end of the infusion tube. The infusion hose is connected to an infusion pump, and the infusion pump is connected to a storage tank through a pipe. The storage tank can store foaming liquid. The infusion pump draws foaming liquid from the storage tank, passes it through the infusion hose and infusion tube, and then atomizes it from the nozzle, spraying it onto the connection flange of the pressure pipeline and the welded joint of the pipeline, making it easy to observe the location of leaks.

[0008] As a preferred embodiment, the height adjustment device includes a telescopic rod fixed to the top of the bearing housing, a locking bolt on the telescopic rod, an adjusting sleeve fixed to the top of the telescopic rod, and the upper end of the infusion tube fitted into the inner hole of the adjusting sleeve. A fastening bolt is provided on the adjusting sleeve. By loosening the locking bolt and the fastening bolt, the height of the telescopic rod and the position of the infusion tube within the adjusting sleeve can be adjusted, thereby adjusting the position of the nozzle.

[0009] As a preferred embodiment, a support plate is provided between the two clamping discs. Rollers are rotatably mounted on the front and rear sides of both ends of the support plate via mounting brackets. A screw jack is fixed to the bottom center of the support plate, and a mounting bracket is fixed to the bottom center of the mounting groove, with the screw jack fixed to the mounting bracket. The rollers provide rolling support to the bottom center of the pressure pipe, preventing it from falling. Furthermore, the height of the rollers can be adjusted via the screw jack to accommodate pressure pipes of different diameters.

[0010] As a preferred embodiment, support legs are fixed at the four corners of the bottom of the mounting slot, and a protective sleeve is fixed at the top center of the mounting slot, which is fitted onto the screw jack. There is a gap between the protective sleeve and the screw jack, and the protective sleeve can prevent liquid from entering.

[0011] This utility model has the following beneficial effects:

[0012] The system utilizes two pressure plates on both sides and a drive mechanism that moves the two pressure plates closer and further apart. It also incorporates a sealing gasket and a rotary joint on the pressure plates. The other end of the rotary joint is fixed with an air supply pipe, and the other end of the air supply pipe is fixed with an air pump. This system can adapt to the testing of pressure pipelines of different diameters and lengths, making the operation simple and quick and improving testing efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 for Figure 1 Partial structural diagram;

[0015] Figure 3 This is a schematic diagram of the side structure of the idler roller;

[0016] In the diagram: 1. Drive motor; 2. Mounting slot; 3. Moving slide plate; 4. Idler roller; 5. Lead screw; 6. Air pump; 7. Screw jack; 8. Pressure gauge; 9. Rotary joint; 10. Shaft; 11. Telescopic rod; 12. Adjusting sleeve; 13. Sealing gasket; 14. Support plate; 15. Pressing plate; 16. Nozzle; 17. Infusion tube; 18. Infusion hose; 19. Driven gear; 20. Drive gear; 21. Rotary motor; 22. Infusion pump; 23. Storage tank. Detailed Implementation

[0017] The present invention will be further described below with reference to the embodiments.

[0018] Example 1, as Figures 1 to 3 As shown, this utility model is a pressure pipeline leak detection device, including a mounting groove 2. Movable frames are provided at both ends of the mounting groove 2. Each movable frame is connected to a drive mechanism that drives it to move in the left and right directions. A bearing seat is fixed to the top of the movable frame, and a rotating shaft 10 is rotatably mounted on the bearing seat. A pressure plate 15 is fixed to the inner end of the rotating shaft 10. An air passage is provided inside the rotating shaft 10 at the left end. A sealing gasket 13 is fixed to the inner side wall of the pressure plate 15. The inner end of the air passage extends to the inner end face of the sealing gasket 13. A power mechanism that drives the rotating shaft 10 to rotate is connected to the rotating shaft 10. A rotary joint 9 is fixed to the outer end of the rotating shaft 10 at the left end. An air supply pipe is fixed to the other end of the rotary joint 9. An air pump 6 is fixed to the other end of the air supply pipe. A valve and a pressure gauge 8 are provided on the air supply pipe.

[0019] During operation, the drive mechanism moves the clamping plate 15 outward, then places the pressure pipeline to be tested in the middle position between the two clamping plates 15. The drive mechanism then moves the two clamping plates 15 closer together, clamping the end of the pressure pipeline to be tested. Then, the valve is opened, the air pump 6 is started, and air is introduced into the pressure pipeline to be tested. The pressure gauge 8 is observed. When the value of the pressure gauge 8 reaches the required pressure value, the valve is closed, the air pump 6 is turned off, and the pressure is maintained for a certain period of time. The pressure gauge 8 is then observed for any changes. If there are no changes, the pressure pipeline is qualified; if there are changes, the pressure pipeline is unqualified. Then, the power mechanism is started, and foaming liquid is manually applied to the outer wall of the flange and the weld seam between the flange and the pressure pipeline to identify potential leaks. The location of the bubbles is observed to determine the location of the leaks. If there are weld seams on the pressure pipeline, foaming liquid also needs to be manually applied.

[0020] In Example 2, based on Example 1, the driving mechanism includes a movable slide plate 3 fixed to the bottom of the movable frame. A movable slider is fixed to the bottom of the movable slide plate 3, and a movable slide rail is connected to the bottom of the movable slider. The movable slide rail is fixed to the mounting groove 2. A nut is fixedly connected to the movable slide plate 3, and a lead screw 5 is connected to the nut. The lead screw 5 is rotatably mounted in the mounting groove 2, and a drive motor 1 is fixed to the outer end of the lead screw 5. The rotation of the drive motor 1 drives the lead screw 5 to rotate, thereby causing the movable slide plate 3 to move left and right along the movable slide rail via the nut, adjusting the position of the pressure plate 15.

[0021] The power mechanism includes a rotary motor 21 fixed on a movable frame. The output shaft of the rotary motor 21 is fixed with a drive gear 20, which meshes with a driven gear 19 fixed on a rotating shaft 10. The rotation of the rotary motor 21 drives the drive gear 20 to rotate, which in turn drives the driven gear 19 to rotate, thereby driving the rotating shaft 10 to rotate, which in turn drives the pressure pipeline to be tested to rotate, facilitating the application of foaming liquid and the detection of leaks.

[0022] An infusion tube 17 is provided on the inner side of the pressure plate 15 at both ends. A nozzle 16 is fixed on the outer side of the infusion tube 17. A height adjustment device is connected to the outer side of the upper end of the infusion tube 17. An infusion hose 18 is fixed to the outer end of the infusion tube 17. The infusion hose 18 is connected to an infusion pump 22. The infusion pump 22 is connected to a storage tank 23 through a pipe. The storage tank 23 is fixed on a movable frame. The infusion pump 22 draws foaming liquid from the storage tank 23, passes it through the infusion hose 18 and the infusion tube 17, and then atomizes it from the nozzle 16, spraying it onto the connection flange of the pressure pipeline and the welded joint of the pipeline. This allows for automatic spraying of foaming liquid.

[0023] The height adjustment device includes a telescopic rod 11 fixed to the top of the bearing housing, a locking bolt on the telescopic rod 11, and an adjusting sleeve 12 fixed to the top of the telescopic rod 11. The upper end of the infusion tube 17 is fitted into the inner hole of the adjusting sleeve 12, and a fastening bolt is provided on the adjusting sleeve 12. The infusion tube 17 is L-shaped. Before spraying the foaming liquid, the locking bolt and the fastening bolt can be loosened, and then the height of the telescopic rod 11 and the horizontal position of the infusion tube 17 within the adjusting sleeve 12 can be adjusted, thereby adjusting the position of the nozzle 16.

[0024] A support plate 14 is provided between the two clamping plates 15. Rollers 4 are rotatably mounted on the front and rear sides of the left and right ends of the support plate 14 via mounting brackets. A screw jack 7 is fixed to the bottom center of the support plate 14, and a mounting bracket is fixed to the bottom center of the mounting groove 2. The screw jack 7 is fixed on the mounting bracket. Before placing the pressure pipe to be tested, the handwheel on the control lever of the screw jack 7 can be rotated to adjust the height of the support plate 14. This allows adjustment of the height position of the pressure pipe's central axis according to the diameter of the pressure pipe to be tested. After adjustment, the pressure pipe to be tested can be directly placed on the rollers 4, ensuring that the pressure pipe to be tested is coaxial with the clamping plates 15.

[0025] Support legs are fixed at the four corners of the bottom of the mounting slot 2, and a protective sleeve is fixed at the top center of the mounting slot 2, which is fitted onto the screw jack 7. There is a gap between the protective sleeve and the screw jack 7.

[0026] In the description of this utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A pressure pipeline leak detection device, comprising an installation groove (2), characterized in that: The mounting slot (2) is equipped with a movable frame at both the left and right ends. The movable frame is connected to a drive mechanism that drives it to move in the left and right directions. A bearing seat is fixed on the top of the movable frame. A rotating shaft (10) is rotatably mounted on the bearing seat. A pressure plate (15) is fixed on the inner end of the rotating shaft (10). An air passage is provided inside the rotating shaft (10) at the left end. A sealing gasket (13) is fixed on the inner side wall of the pressure plate (15). The inner end of the air passage extends to the inner end face of the sealing gasket (13). The rotating shaft (10) is connected to a power mechanism that drives it to rotate. A rotary joint (9) is fixed on the outer end of the rotating shaft (10) at the left end. An air supply pipe is fixed on the other end of the rotary joint (9). An air pump (6) is fixed on the other end of the air supply pipe. A valve and a pressure gauge (8) are provided on the air supply pipe.

2. The pressure pipeline leak detection device according to claim 1, characterized in that: The drive mechanism includes a movable slide plate (3) fixed to the bottom of the movable frame. A movable slider is fixed to the bottom of the movable slide plate (3). A movable slide rail is connected to the bottom of the movable slider. The movable slide rail is fixed to the mounting groove (2). A nut is fixedly connected to the movable slide plate (3). A lead screw (5) is connected to the nut. The lead screw (5) is rotatably installed in the mounting groove (2). A drive motor (1) is fixed to the outer end of the lead screw (5).

3. The pressure pipeline leak detection device according to claim 1, characterized in that: The power mechanism includes a rotary motor (21) fixed on a movable frame. The output shaft of the rotary motor (21) is fixed with a drive gear (20), and the drive gear (20) meshes with a driven gear (19) fixed on a rotating shaft (10).

4. The pressure pipeline leak detection device according to claim 1, characterized in that: An infusion tube (17) is provided on the inner side of the clamping plate (15) at both ends. A nozzle (16) is fixed on the outer side of the infusion tube (17). A height adjustment device is connected to the outer side of the upper end of the infusion tube (17). An infusion hose (18) is fixed to the outer end of the infusion tube (17). An infusion pump (22) is connected to the infusion hose (18). The infusion pump (22) is connected to a storage tank (23) through a pipe. The storage tank (23) is fixed on the mobile frame.

5. A pressure pipeline leak detection device according to claim 4, characterized in that: The height adjustment device includes a telescopic rod (11) fixed to the top of the bearing seat, a locking bolt on the telescopic rod (11), an adjustment sleeve (12) fixed to the top of the telescopic rod (11), the upper end of the infusion tube (17) is sleeved in the inner hole of the adjustment sleeve (12), and a fastening bolt is provided on the adjustment sleeve (12).

6. The pressure pipeline leak detection device according to claim 1, characterized in that: A support plate (14) is provided in the middle of the two pressing plates (15). The front and rear sides of the left and right ends of the support plate (14) are rotatably mounted with rollers (4) through the mounting frame. A screw jack (7) is fixed in the middle of the bottom of the support plate (14). A mounting frame is fixed in the middle of the bottom of the mounting groove (2). The screw jack (7) is fixed on the mounting frame.

7. A pressure pipeline leak detection device according to claim 6, characterized in that: Support legs are fixed at the four corners of the bottom of the mounting slot (2), and a protective sleeve is fixed in the middle of the top of the mounting slot (2) and fitted onto the screw jack (7). There is a gap between the protective sleeve and the screw jack (7).

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