Leakage detection device for natural gas pipeline

Abstract

The utility model relates to the technical field of detection devices, in particular to a leakage detection device for a natural gas pipeline, which comprises a vertical plate, a support is arranged at the bottom of the vertical plate, an angle adjusting mechanism is arranged between the support and the vertical plate, a stable supporting mechanism is arranged at the bottom of the support, and telescopic rods are arranged at the top and the bottom of one end of the outer wall of the vertical plate. A telescopic rod is arranged on the vertical plate, a movable clamping mechanism is arranged between the telescopic rod and the vertical plate, and an upper detection box and a lower detection box are arranged at the top and the bottom of one side of the vertical plate. The pressure detection equipment and the pressure detection head are arranged to detect gas leakage at the joint, and the sealing treatment mechanism is arranged to improve the sealing performance between the pipeline and the upper detection box and the lower detection box, so that the detection accuracy is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a leakage detection device for a natural gas pipeline. Background Art

[0002] Natural gas refers to all gases that exist naturally in nature, including gases formed by various natural processes in the atmosphere, hydrosphere, and lithosphere, including oilfield gas, gas field gas, mud volcano gas, coalbed methane, and biogenic gas. The existing detection devices used in natural gas pipeline operation and maintenance require manual labor to take the detection devices to detect the natural gas pipelines. However, manual detection will reduce the work speed and increase the operation time, and it cannot adapt to work in various environments, and it is impossible to quickly make emergency treatment for leaking pipelines.

[0003] After searching, the patent publication number CN208025144U is a leak detection device for natural gas pipeline operation and maintenance, including a sealed shell, a transparent tube is fixed at the top center of the sealed shell, the top center of the transparent tube is connected to a gas guide tube, and fixed plates are provided on both sides of the sealed shell, and the lower surface of the fixed plate is connected to a spring and a universal roller. The utility model describes a leak detection device for natural gas pipeline operation and maintenance. In the process of implementing this solution, it was found that the following problems in the prior art have not been well solved: the gas pipeline leakage point is generally located at the joint position, and the above device does not use a sealed package detection device for detection, and the detection result is not accurate enough. It is urgent to design a leak detection device for natural gas pipelines to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a leakage detection device for a natural gas pipeline to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A leakage detection device for a natural gas pipeline comprises a vertical plate, a bracket is arranged at the bottom of the vertical plate, an angle adjustment mechanism is arranged between the bracket and the vertical plate, a stable supporting mechanism is arranged at the bottom of the bracket, a telescopic rod is arranged at the top and bottom of one end of the outer wall of the vertical plate, a movable clamping mechanism is arranged between the telescopic rod and the vertical plate, an upper detection box and a lower detection box are arranged at the top and bottom of one side of the vertical plate, a stable connection mechanism is arranged between the telescopic rod and the upper detection box and the lower detection box respectively, an air pressure detection device is fixedly connected to the outer walls of the upper detection box and the lower detection box, the air pressure detection device is fixedly connected to the air pressure detection head, the air pressure detection head is respectively inside the upper detection box and the lower detection box, and a sealing processing mechanism is arranged on the outer walls of the upper detection box and the lower detection box.

[0007] Preferably, the angle adjustment mechanism comprises a telescopic plate and a third limiting bolt, the telescopic plate and the vertical plate are slidably connected, the telescopic plate and the bracket are rotatably connected, and the third limiting bolt and the vertical plate are threadedly connected.

[0008] Preferably, the stable support mechanism includes a second spring and a second damper, a base plate is provided at the bottom of the bracket, pulleys are fixedly connected to the four corners of the bottom of the base plate, and the top and bottom of the second spring and the second damper are fixedly connected to the bracket and the base plate respectively.

[0009] Preferably, the movable clamping mechanism includes a bidirectional threaded screw and a slider, a sliding groove is opened on the outer wall of the vertical plate, the slider is slidably connected to the top and bottom of the inner wall of the sliding groove respectively, the slider is threadedly connected to the bidirectional threaded screw, the slider is fixedly connected to the telescopic rod, and the outer wall of the telescopic rod is threadedly connected with a first limit bolt.

[0010] Preferably, the stable connection mechanism includes a first spring and a first damper, one end of the first spring and the first damper is fixedly connected to the connecting plate, and the other end of the first spring and the first damper is fixedly connected to the upper detection box and the lower detection box respectively.

[0011] Preferably, the sealing processing mechanism includes an air pump and an inflatable rubber sleeve, the inflatable rubber sleeve is fixedly connected to the outer walls of the upper inspection box and the lower inspection box respectively, the air pump is fixedly connected to the outer walls of the upper inspection box and the lower inspection box respectively, and an air guide hose is fixedly connected between the air pump and the inflatable rubber sleeve.

[0012] Preferably, a plurality of plug rods are fixedly connected to the bottom of the upper detection box, a plurality of plug holes are opened on the top of the lower detection box, and the plug rods are located on the top of the plug holes.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In the utility model, by setting the upper detection box and the lower detection box, the pipe joint can be wrapped and sealed under the action of the mobile clamping mechanism, and the gas leakage at the joint can be detected by setting the pressure detection equipment and the pressure detection head. By setting the sealing processing mechanism, the sealing between the pipe and the upper detection box and the lower detection box can be improved, thereby ensuring the detection accuracy;

[0015] In the utility model, a telescopic plate and a vertical plate are slidably connected, and a third limiting bolt is used for limiting the position, so that the device can be used to detect pipes at different heights, and the telescopic plate and the bracket are rotatably connected, so that the pipes can be wrapped and detected at different angles, and a telescopic rod is set to limit the position by the first limiting bolt, so that the upper detection box and the lower detection box can be adjusted according to the position of the pipe, thereby improving the wrapping tightness and detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of a leakage detection device for a natural gas pipeline.

[0017] Figure 2 It is a schematic diagram of the partial main structure of a leakage detection device for a natural gas pipeline.

[0018] Figure 3 This is a schematic diagram of the back main structure of a leakage detection device for a natural gas pipeline.

[0019] Figure 4 The figure is a schematic diagram of the main structure of the upper detection box of a leakage detection device for a natural gas pipeline.

[0020] In the figure: 1. vertical plate; 2. bracket; 3. upper detection box; 4. pulley; 5. bottom plate; 6. bidirectional threaded screw; 7. slide groove; 8. first limit bolt; 9. telescopic rod; 10. slider; 11. first spring; 12. first damper; 13. connecting plate; 14. jack; 15. second limit bolt; 16. second spring; 17. second damper; 18. telescopic plate; 19. third limit bolt; 20. inflatable rubber sleeve; 21. air guide hose; 22. air pump; 23. air pressure detection equipment; 24. plug rod; 25. air pressure detection head; 26. lower detection box. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4In the embodiment of the utility model, a leakage detection device for a natural gas pipeline includes a vertical plate 1, a bracket 2 is arranged at the bottom of the vertical plate 1, an angle adjustment mechanism is arranged between the bracket 2 and the vertical plate 1, a stable support mechanism is arranged at the bottom of the bracket 2, a telescopic rod 9 is arranged at the top and bottom of one end of the outer wall of the vertical plate 1, a mobile clamping mechanism is arranged between the telescopic rod 9 and the vertical plate 1, an upper detection box 3 and a lower detection box 26 are arranged at the top and bottom of one side of the vertical plate 1, a stable connection mechanism is arranged between the telescopic rod 9 and the upper detection box 3 and the lower detection box 26 respectively, and an air pressure detection device is fixedly connected to the outer walls of the upper detection box 3 and the lower detection box 26 Equipment 23, the air pressure detection equipment 23 is fixedly connected with an air pressure detection head 25, and the air pressure detection head 25 is respectively inside the upper detection box 3 and the lower detection box 26. The outer walls of the upper detection box 3 and the lower detection box 26 are provided with sealing processing mechanisms. By providing the upper detection box 3 and the lower detection box 26, the pipe joints can be wrapped and sealed under the action of the mobile clamping mechanism. By providing the pressure detection equipment 23 and the pressure detection head 25, the gas leakage at the joints can be detected. By providing the sealing processing mechanism, the sealing between the pipeline and the upper detection box 3 and the lower detection box 26 can be improved, thereby ensuring the detection accuracy.

[0023] The angle adjustment mechanism includes a telescopic plate 18 and a third limiting bolt 19. The telescopic plate 18 is slidably connected to the vertical plate 1, the telescopic plate 18 is rotatably connected to the bracket 2, and the third limiting bolt 19 is threadedly connected to the vertical plate 1. By setting the telescopic plate 18 and the vertical plate 1 to be slidably connected and using the third limiting bolt 19 for limiting, the device can be used to detect pipelines at different heights, and the telescopic plate 18 is rotatably connected to the bracket 2, so that the pipeline can be wrapped and detected at different angles;

[0024] The stable support mechanism includes a second spring 16 and a second damper 17. A bottom plate 5 is provided at the bottom of the bracket 2. The four corners of the bottom of the bottom plate 5 are fixedly connected with pulleys 4. The top and bottom of the second spring 16 and the second damper 17 are respectively fixedly connected to the bracket 2 and the bottom plate 5 to improve the overall stability of the device, thereby ensuring the accuracy of the detection result.

[0025] The mobile clamping mechanism includes a bidirectional threaded screw 6 and a slider 10. A slide groove 7 is provided on the outer wall of the vertical plate 1. The slider 10 is slidably connected to the top and bottom of the inner wall of the slide groove 7 respectively. The slider 10 is threadedly connected to the bidirectional threaded screw 6. The slider 10 is fixedly connected to the telescopic rod 9. The outer wall of the telescopic rod 9 is threadedly connected with a first limiting bolt 8. By arranging the upper detection box 3 and the lower detection box 26, the pipe joint can be wrapped and sealed under the action of the mobile clamping mechanism.

[0026] The stable connection mechanism includes a first spring 11 and a first damper 12, one end of the first spring 11 and the first damper 12 is fixedly connected to the connection plate 13, and the other end of the first spring 11 and the first damper 12 is fixedly connected to the upper detection box 3 and the lower detection box 26 respectively, so as to improve the lateral stability of the upper detection box 3 and the lower detection box 26;

[0027] The sealing mechanism includes an air pump 22 and an inflatable rubber sleeve 20. The inflatable rubber sleeve 20 is fixedly connected to the outer walls of the upper detection box 3 and the lower detection box 26 respectively. The air pump 22 is fixedly connected to the outer walls of the upper detection box 3 and the lower detection box 26 respectively. An air guide hose 21 is fixedly connected between the air pump 22 and the inflatable rubber sleeve 20. By setting the sealing mechanism, the sealing between the pipeline and the upper detection box 3 and the lower detection box 26 can be improved, thereby ensuring the detection accuracy.

[0028] A plurality of plug rods 24 are fixedly connected to the bottom of the upper detection box 3, and a plurality of plug holes 14 are opened on the top of the lower detection box 26. The plug rods 24 are located at the top of the plug holes 14 to limit the upper detection box 3 and the lower detection box 26 to ensure stability during detection.

[0029] The working principle of the utility model is as follows: by setting up the upper detection box 3 and the lower detection box 26, the pipe joint can be wrapped and sealed under the action of the mobile clamping mechanism, and the gas leakage at the joint can be detected by setting up the pressure detection equipment 23 and the pressure detection head 25. By setting up the sealing processing mechanism, the sealing between the pipeline and the upper detection box 3 and the lower detection box 26 can be improved, thereby ensuring the detection accuracy.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A leakage detection device for a natural gas pipeline, comprising a vertical plate (1), characterized in that: A bracket (2) is provided at the bottom of the vertical plate (1), an angle adjustment mechanism is provided between the bracket (2) and the vertical plate (1), a stable support mechanism is provided at the bottom of the bracket (2), a telescopic rod (9) is provided at the top and bottom of one end of the outer wall of the vertical plate (1), a movable clamping mechanism is provided between the telescopic rod (9) and the vertical plate (1), an upper detection box (3) and a lower detection box (26) are provided at the top and bottom of one side of the vertical plate (1), a stable connection mechanism is provided between the telescopic rod (9) and the upper detection box (3) and the lower detection box (26), respectively, an air pressure detection device (23) is fixedly connected to the outer walls of the upper detection box (3) and the lower detection box (26), the air pressure detection device (23) is fixedly connected to the air pressure detection head (25), the air pressure detection head (25) is respectively inside the upper detection box (3) and the lower detection box (26), and a sealing processing mechanism is provided on the outer walls of the upper detection box (3) and the lower detection box (26).

2. The leakage detection device for a natural gas pipeline according to claim 1, characterized in that: The angle adjustment mechanism comprises a telescopic plate (18) and a third limiting bolt (19); the telescopic plate (18) and the vertical plate (1) are slidably connected; the telescopic plate (18) and the bracket (2) are rotatably connected; and the third limiting bolt (19) and the vertical plate (1) are threadedly connected.

3. The leakage detection device for a natural gas pipeline according to claim 1, characterized in that: The stabilizing support mechanism comprises a second spring (16) and a second damper (17); a bottom plate (5) is arranged at the bottom of the bracket (2); pulleys (4) are fixedly connected to the four corners of the bottom of the bottom plate (5); and the top and bottom of the second spring (16) and the second damper (17) are fixedly connected to the bracket (2) and the bottom plate (5) respectively.

4. The leakage detection device for a natural gas pipeline according to claim 1, characterized in that: The movable clamping mechanism comprises a bidirectional threaded screw (6) and a slider (10); a slide groove (7) is provided on the outer wall of the vertical plate (1); the slider (10) is slidably connected to the top and bottom of the inner wall of the slide groove (7) respectively; the slider (10) is threadedly connected to the bidirectional threaded screw (6); the slider (10) is fixedly connected to the telescopic rod (9); and the outer wall of the telescopic rod (9) is threadedly connected to a first limiting bolt (8).

5. The leakage detection device for a natural gas pipeline according to claim 1, characterized in that: The stable connection mechanism comprises a first spring (11) and a first damper (12); one end of the first spring (11) and the first damper (12) are fixedly connected to the connection plate (13); the other ends of the first spring (11) and the first damper (12) are fixedly connected to the upper detection box (3) and the lower detection box (26), respectively.

6. The leakage detection device for a natural gas pipeline according to claim 1, characterized in that: The sealing processing mechanism comprises an air pump (22) and an inflatable rubber sleeve (20), the inflatable rubber sleeve (20) being fixedly connected to the outer walls of the upper detection box (3) and the lower detection box (26) respectively, the air pump (22) being fixedly connected to the outer walls of the upper detection box (3) and the lower detection box (26) respectively, and an air guide hose (21) being fixedly connected between the air pump (22) and the inflatable rubber sleeve (20).

7. The leakage detection device for a natural gas pipeline according to claim 1, characterized in that: The bottom of the upper detection box (3) is fixedly connected with a plurality of insertion rods (24), and the top of the lower detection box (26) is provided with a plurality of insertion holes (14), and the insertion rods (24) are located at the tops of the insertion holes (14).

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