Gas leakage detection device for urban gas buried pipeline

Abstract

The utility model discloses a gas leakage detection device for an urban gas buried pipeline, which comprises an equipment main body, a detection device arranged in the equipment main body, a handle arranged on the right side of the equipment main body, and a positioning device arranged on the outer wall of the right side of the handle and comprising two groups of first fixing blocks symmetrically fixed on the right side of the handle, a pressing plate is fixed to the bottom of the rotating plate, a first pull rope is fixed to the bottom of the pressing plate, an L-shaped rotating block is fixed to the other end of the first pull rope, the L-shaped rotating block is installed at the bottom of the right side of the equipment body, and a penetrating groove is formed in the middle of the equipment body; four sets of second fixing blocks are symmetrically fixed to the inner wall of the penetrating groove, conical barrels are fixed to the opposite faces of the four sets of second fixing blocks, and discharging assemblies are installed at the bottoms of the conical barrels.

Description

Technical Field

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

[0002] Buried gas pipelines refer to pipeline systems buried underground for the purpose of transporting natural gas or other gases. Such pipelines are generally made of corrosion-resistant materials such as steel pipes or polyethylene. They have high strength and pressure resistance to adapt to the pressure of the underground environment and other external influences. Buried gas pipelines are usually used in urban gas supply, industrial gas transportation and other occasions. Their main features are safety, aesthetics, durability, etc. The construction of buried gas pipelines needs to follow strict specifications and standards to ensure the sealing and overall safety of the pipelines. During the construction and maintenance process, the status of the pipelines needs to be checked regularly to prevent safety hazards such as leakage.

[0003] Existing buried gas pipeline detection usually has many technical means to ensure the safety of gas pipelines and timely detect leaks. High-sensitivity gas sensors are generally used in the detection to check the combustible gas concentration around the buried gas pipeline. Once the sensor is abnormal, excavation will be carried out at the location and then the gas pipeline will be inspected. However, this method has certain defects. The device cannot mark the position after positioning, which makes it easy to lose the position during later excavation, causing trouble for emergency repair work. Therefore, we proposed a gas leak detection device for urban gas buried pipelines. Utility Model Content

[0004] The purpose of the utility model is to provide a gas leakage detection device for buried urban gas pipelines to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a gas leak detection device for buried urban gas pipelines, comprising a device body, wherein a detection device is installed in the device body for detecting gas pipeline leaks; a handle is installed on the right side of the device body, and a positioning device is installed on the right outer wall of the handle for marking the gas pipeline leak location;

[0006] The positioning device includes two groups of first fixed blocks symmetrically fixed on the right side of the handle, and the two groups of first fixed blocks are rotatably connected to a rotating plate on the facing sides, and a pressing plate is fixed to the bottom of the rotating plate, and a first pull rope is fixed to the bottom of the pressing plate, and the other end of the first pull rope is fixed to an L-shaped rotating block, and the L-shaped rotating block is installed at the bottom right side of the equipment body, and a through groove is opened in the center of the equipment body, and four groups of second fixed blocks are symmetrically fixed on the inner wall of the through groove, and a conical cylinder is fixed on the facing sides of the four groups of second fixed blocks, and a discharging assembly is installed at the bottom of the conical cylinder, and a second pull rope is fixed to one end of the discharging assembly, and the other end of the second pull rope is fixedly connected to the L-shaped rotating block.

[0007] Furthermore, a second rectangular groove is opened at the bottom right side of the device body, the inner wall of the second rectangular groove is rotatably connected to the second rotating shaft, the L-shaped rotating block is coaxially fixed at the center of the outer wall of the second rotating shaft, and a spring is fixed to the top right side of the L-shaped rotating block, and the other end of the spring is fixedly connected to the inner wall of the second rectangular groove.

[0008] Furthermore, the discharging assembly includes a first stopper fixed at the bottom of the conical cylinder, the first stopper is rotatably connected to a first cover plate, a third fixed block is fixed to the bottom of the first cover plate, the third fixed block is fixedly connected to a second pull rope, a powder inlet is provided at the top of the conical cylinder, the outer wall of the powder inlet is rotatably connected to a second cover plate, and a powder outlet hole is provided at the bottom of the conical cylinder.

[0009] Furthermore, the detection device includes a detection plate fixed to the bottom of four groups of second fixed blocks, four groups of sensors are fixed on the top of the second fixed blocks, the same control board is fixed on the top of the four groups of sensors, and four groups of warning lights are symmetrically fixed on the top of the control board.

[0010] Furthermore, a first rectangular groove is opened on the right side of the device body, the inner wall of the first rectangular groove is rotatably connected to a first rotating shaft, and the handle is coaxially fixed at the center of the outer wall of the first rotating shaft.

[0011] Furthermore, four groups of third rectangular grooves are symmetrically opened at the bottom of the device body, the inner walls of the four groups of third rectangular grooves are rotatably connected to the third rotating shaft, and the outer wall of the third rotating shaft is coaxially fixed with a hub.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The device body, handle, and positioning device are provided. When in use, the handle is pushed to move the device body on the buried gas pipeline. After locating the leak location, the pressing plate is pressed. A first pull rope is fixed to the bottom of the pressing plate, and an L-shaped rotating block is fixed to the other end of the first pull rope. A second pull rope is fixed to the other end of the L-shaped rotating block. The second pull rope is fixed to the first cover plate at the bottom of the conical cylinder. Therefore, when the pressing plate is pulled, the marking powder in the conical cylinder will leak out, thereby marking the leak location and facilitating subsequent excavation and repair.

[0014] 2. By setting up the equipment body, handle, detection device, etc., when in use, push the handle to drive the equipment body to move on the buried pipeline. The detection board at the bottom of the equipment body will detect the leaking gas on the pipeline. When there is a leak point, the detection board will transmit the data to the control board through the sensor, and the control board will control the warning light to flash, thereby reminding the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional expanded structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the expanded structure of the positioning device of the utility model;

[0017] Figure 3 This is a schematic diagram of the first partial expanded structure of the utility model;

[0018] Figure 4 For the utility model Figure 3 A in the middle is an enlarged structural diagram;

[0019] Figure 5 This is a schematic diagram of the expanded structure of the detection device of the present utility model;

[0020] Figure 6 This is a schematic diagram of the second partial expanded structure of the utility model.

[0021] In the figure: 1. Equipment body; 2. Handle; 3. Detection device; 4. Positioning device; 5. First rectangular groove; 6. First fixed block; 7. Pressing plate; 8. Rotating plate; 9. First pull rope; 10. First rotating shaft; 11. Through groove; 12. Second fixed block; 13. Warning light; 14. Control panel; 15. Conical cylinder; 16 Detection plate; 17. First cover plate; 18. Third fixed block; 19. First stop block; 20. Powder outlet; 21. Second cover plate; 22. Powder inlet; 23. Second pull rope; 24. Second rectangular groove; 25. Spring; 26. L-shaped rotating block; 27. Second rotating shaft; 28. Sensor; 29. ​​Hub; 30. Third rotating shaft; 31. Third rectangular groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1 to 6 A gas leak detection device for buried urban gas pipelines includes a device body 1, a handle 2 is installed on the right side of the device body 1, four sets of third rectangular grooves 31 are symmetrically opened on the bottom of the device body 1, the inner walls of the four sets of third rectangular grooves 31 are rotatably connected to third rotating shafts 30, and the outer wall of the third rotating shaft 30 is coaxially fixed with a hub 29, a first rectangular groove 5 is opened on the right side of the device body 1, the inner wall of the first rectangular groove 5 is rotatably connected to the first rotating shaft 10, and the handle 2 is coaxially fixed to the center of the outer wall of the first rotating shaft 10;

[0024] Specifically, when in use, the staff places the device on the ground. The bottom of the device body 1 is provided with a movable four-inch wheel hub 29. After the device body 1 is placed on the buried gas pipeline to be inspected, the handle 2 is pushed to make the device body 1 move linearly on the buried pipeline gas. Then, the buried gas pipeline is inspected by the detection device 3 inside the device body 1. The main working principle is that the detection device 3 detects the combustible gas concentration on the buried gas pipeline. When the concentration exceeds a certain value, it will be determined as a pipeline leak.

[0025] In this embodiment, a detection device 3 is installed in the device body 1 for detecting gas pipeline leaks. The detection device 3 includes a detection plate 16 fixed to the bottom of four sets of second fixing blocks 12. Four sets of sensors 28 are fixed to the top of the second fixing blocks 12. The same control board 14 is fixed to the top of the four sets of sensors 28. Four sets of warning lights 13 are fixed to the top of the control board 14 at equal distances and symmetrically.

[0026] Next, the detection device 3 includes a detection board 16, a sensor 28, a control board 14, and a warning light 13. The device body 1 is moved on the buried gas pipeline, and the detection board 16 is activated to detect the gas concentration near it. When the detected concentration exceeds the specified concentration, the detection board 16 will transmit the data to the control board 14 through the sensor 28. The control board 14 displays the value at that location and reminds the staff of the leak location by flashing the warning light 13. At this time, the staff stops pushing the handle 2, thereby placing the device body 1 above the leak location, and then presses the positioning device 4 to mark the location.

[0027] The above-mentioned positioning device 4 includes two groups of first fixed blocks 6 symmetrically fixed on the right side of the handle 2, and the two groups of first fixed blocks 6 are rotatably connected to the facing side of the rotating plate 8. A pressing plate 7 is fixed to the bottom of the rotating plate 8, and a first pull rope 9 is fixed to the bottom of the pressing plate 7. The other end of the first pull rope 9 is fixed to an L-shaped rotating block 26, and the L-shaped rotating block 26 is installed at the bottom right side of the equipment body 1. A through groove 11 is opened in the center of the equipment body 1, and four groups of second fixed blocks 12 are symmetrically fixed on the inner wall of the through groove 11. A conical cylinder 15 is fixed to the facing side of the four groups of second fixed blocks 12, and a discharging assembly is installed at the bottom of the conical cylinder 15. A second pull rope 23 is fixed to one end of the discharging assembly, and the other end of the second pull rope 23 is fixedly connected to the L-shaped rotating block 26;

[0028] After the leak location is detected, the first pull rope 9 is driven to move upward by pressing the pressing plate 7. Note that the displacement of the first pull rope 9 is proportional to the force of pressing the pressing plate 7. The other end of the first pull rope 9 is connected to an L-shaped rotating block 26. A spring 25 is provided above the L-shaped rotating block 26. The deformation of the spring 25 can drive the L-shaped rotating block 26 to restore. The other end of the L-shaped rotating block 26 is connected to the discharge assembly through the second pull rope 23. When the pressing plate 7 is pressed once, the discharge assembly can mark the leak location, thereby facilitating subsequent excavation of the leak point and not forgetting the leak location, which affects the work.

[0029] Supplementary explanation: the discharge assembly includes a conical cylinder 15, a first cover plate 17, a third fixed block 18 and a first stopper 19. The main principle is to open the first cover plate 17 at the bottom of the conical cylinder 15 by pulling the second pull rope 23, thereby releasing the marking powder in the conical cylinder 15. Note that the marking powder can use powders of different colors to facilitate subsequent excavation. A torsion spring is provided between the first cover plate 17 and the conical cylinder 15. It is worth mentioning that a second cover plate 21 is provided on the top of the conical cylinder 15. The second cover plate 21 is a filter plate, which can ensure that the conical cylinder 15 is not mixed with other dust, thereby affecting the marking of the leakage point.

[0030] Finally, after marking the leakage point, release the pressing plate 7. At this time, under the action of the spring 25, the L-shaped rotating block 26 rotates. At the same time, the first cover plate 17 seals the bottom of the conical cylinder 15 under the action of the torsion spring. Then, the staff continues to push the handle 2 to drive the equipment body 1 to move on the buried gas pipeline. Repeat the above steps until all the buried gas pipeline inspections are completed.

[0031] Working principle: Specifically, when in use, the staff places the equipment on the ground. A movable four-inch wheel hub 29 is provided at the bottom of the equipment body 1. After placing the equipment body 1 on the buried gas pipeline to be detected, the handle 2 is pushed to make the equipment body 1 move linearly on the buried pipeline gas. Then, the buried gas pipeline is detected through the detection device 3 inside the equipment body 1. The main working principle is to detect the combustible gas concentration on the buried gas pipeline through the detection device 3. When the concentration exceeds a certain value, it will be judged as a pipeline leak. Then, the detection device 3 includes a detection board 16, a sensor 28, a control board 14, and a warning light 13. The equipment body 1 is moved on the buried gas pipeline, and the detection board 16 is started at the same time to detect the gas concentration near it. When the detected concentration exceeds the specified concentration, the detection board 16 will transmit the data through the sensor 28 When the leak is detected, the first pull rope 9 is moved upward by pressing the pressing plate 7. Note that the displacement of the first pull rope 9 is proportional to the force of pressing the pressing plate 7. The other end of the first pull rope 9 is connected to an L-shaped rotating block 26. A spring 25 is provided above the L-shaped rotating block 26. The deformation of the spring 25 can drive the L-shaped rotating block 26 to restore. The other end of the L-shaped rotating block 26 is connected to the discharging assembly through the second pull rope 23. When the pressing plate 7 is pressed once, the discharging assembly can mark the leak position, thereby facilitating the subsequent excavation of the leak point and not forgetting the leak position, thereby affecting the work.

[0032] Supplementary explanation: the discharge assembly includes a conical cylinder 15, a first cover plate 17, a third fixed block 18 and a first stopper 19. The main principle is to open the first cover plate 17 at the bottom of the conical cylinder 15 by pulling the second pull rope 23, thereby releasing the marking powder in the conical cylinder 15. Note that the marking powder can use powders of different colors to facilitate subsequent excavation. A torsion spring is provided between the first cover plate 17 and the conical cylinder 15. It is worth mentioning that a second cover plate 21 is provided on the top of the conical cylinder 15. The second cover plate 21 is a filter plate, which can ensure that the conical cylinder 15 is not mixed with other dust, thereby affecting the marking of the leakage point.

[0033] Finally, after marking the leakage point, release the pressing plate 7. At this time, under the action of the spring 25, the L-shaped rotating block 26 rotates. At the same time, the first cover plate 17 seals the bottom of the conical cylinder 15 under the action of the torsion spring. Then, the staff continues to push the handle 2 to drive the equipment body 1 to move on the buried gas pipeline. Repeat the above steps until all the buried gas pipeline inspections are completed.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gas leak detection device for buried town gas pipelines, comprising a device body (1), characterized in that: A detection device (3) is installed in the device body (1) for detecting gas pipeline leakage; a handle (2) is installed on the right side of the device body (1), and a positioning device (4) is installed on the right outer wall of the handle (2) for marking the gas pipeline leakage position; The positioning device (4) comprises two groups of first fixed blocks (6) symmetrically fixed on the right side of the handle (2), the two groups of first fixed blocks (6) are rotatably connected to a rotating plate (8) on the opposite sides thereof, a pressing plate (7) is fixed to the bottom of the rotating plate (8), a first pull rope (9) is fixed to the bottom of the pressing plate (7), an L-shaped rotating block (26) is fixed to the other end of the first pull rope (9), the L-shaped rotating block (26) is installed at the bottom right side of the device body (1), a through groove (11) is provided at the center of the device body (1), four groups of second fixed blocks (12) are symmetrically fixed to the inner wall of the through groove (11), a conical cylinder (15) is fixed to the opposite sides of the four groups of second fixed blocks (12), a discharging assembly is installed at the bottom of the conical cylinder (15), a second pull rope (23) is fixed to one end of the discharging assembly, and the other end of the second pull rope (23) is fixedly connected to the L-shaped rotating block (26).

2. A gas leak detection device for buried town gas pipelines according to claim 1, characterized in that: A second rectangular groove (24) is provided at the bottom right side of the device body (1); the inner wall of the second rectangular groove (24) is rotatably connected to a second rotating shaft (27); the L-shaped rotating block (26) is coaxially fixed at the center of the outer wall of the second rotating shaft (27); a spring (25) is fixed at the top right side of the L-shaped rotating block (26); the other end of the spring (25) is fixedly connected to the inner wall of the second rectangular groove (24).

3. A gas leak detection device for buried town gas pipelines according to claim 1, characterized in that: The discharging assembly includes a first stopper (19) fixed at the bottom of the conical cylinder (15), the first stopper (19) is rotatably connected to a first cover plate (17), a third fixed block (18) is fixed to the bottom of the first cover plate (17), the third fixed block (18) is fixedly connected to a second pull rope (23), a powder inlet (22) is provided at the top of the conical cylinder (15), the outer wall of the powder inlet (22) is rotatably connected to a second cover plate (21), and a powder outlet hole (20) is provided at the bottom of the conical cylinder (15).

4. A gas leak detection device for buried town gas pipelines according to claim 1, characterized in that: The detection device (3) comprises a detection plate (16) fixed to the bottom of four groups of second fixed blocks (12), four groups of sensors (28) are fixed on the top of the second fixed blocks (12), a same control board (14) is fixed on the top of the four groups of sensors (28), and four groups of warning lights (13) are fixed on the top of the control board (14) at equal distances and symmetrically.

5. The gas leak detection device for buried town gas pipelines according to claim 1, characterized in that: A first rectangular groove (5) is provided on the right side of the device body (1); the inner wall of the first rectangular groove (5) is rotatably connected to a first rotating shaft (10); and the handle (2) is coaxially fixed to the center of the outer wall of the first rotating shaft (10).

6. A gas leak detection device for buried town gas pipelines according to claim 1, characterized in that: Four groups of third rectangular grooves (31) are symmetrically provided at the bottom of the device body (1); the inner walls of the four groups of third rectangular grooves (31) are rotatably connected to a third rotating shaft (30); and a wheel hub (29) is coaxially fixed to the outer wall of the third rotating shaft (30).

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