A gas stop device for PE gas pipe

Abstract

The utility model relates to a kind of for PE gas pipe's gas stop device, belong to gas pipeline plugging technical field. Including support frame, upper pressing rod is movably installed in support frame, and operating screw is movably installed on upper pressing rod by movable seat on upper pressing rod, operating screw is threadedly connected with support frame, operating screw can control upper pressing rod to move up and down, and lower pressing rod is clamped on the support frame below upper pressing rod by limiting seat, and first limiting assembly, second limiting assembly, third limiting assembly and fourth limiting assembly are respectively set on the support frame corresponding to lower pressing rod. The gas stop device for the PE gas pipe effectively prevents swing and improves the stability of gas stop work, solves the problem that the midline of the existing PE pipe stopper and the midline of the PE gas pipe do not form a straight line, which affects the gas stop effect of the PE gas pipe and the subsequent PE gas pipe recovery ventilation.

Description

Technical Field

[0001] This utility model relates to a gas-stopping device for PE gas pipes, belonging to the field of gas pipeline sealing technology. Background Technology

[0002] PE gas pipes are gas transmission pipes made of polyethylene. During the maintenance of PE gas pipes, PE pipe stoppers (commonly known as gas clamps) are often used to stop the gas flow in PE gas pipes with a diameter of 32-63mm. This helps maintenance personnel quickly locate and isolate the fault point, reducing the safety hazards caused by gas leaks.

[0003] Existing PE pipe stoppers include a support frame, an upper clamping rod, and a lower clamping rod (see appendix). Figure 4 The support frame has an upper clamping rod and a lower clamping rod movably mounted vertically. An operating screw is movably mounted on the upper clamping rod and threadedly connected to the support frame. In use, the operating screw drives the upper clamping rod downwards, thus achieving the purpose of clamping and stopping the gas flow on the PE gas pipe. Although this PE pipe stopper can perform the shut-off operation by clamping the upper and lower clamping rods, in actual operation, the operator needs to use both hands to turn the operating screw because the PE pipe stopper lacks a limit function and the operating screw has high friction. The high friction caused by this hand-turning causes the PE pipe stopper to swing and tilt on the PE gas pipe, resulting in the center line of the PE pipe stopper not aligning with the center line of the PE gas pipe. This not only affects the gas-stopping effect but also creates difficulties for subsequent restoration of the PE gas pipe. Therefore, it is necessary to improve this design. Summary of the Invention

[0004] The purpose of this invention is to provide an air-stopping device for PE gas pipes that effectively prevents swaying and improves the stability of the gas-stopping operation, thereby solving the problem that the center line of the existing PE pipe stopper and the center line of the PE gas pipe do not form a straight line, which affects the gas-stopping effect of the PE gas pipe and the subsequent restoration of the PE gas pipe.

[0005] The technical solution of this utility model is: An air stopping device for a PE gas pipe, comprising a support frame, in which an upper pressing rod is movably installed. An operating screw rod is movably installed on the upper pressing rod through a movable seat. The operating screw rod is threadedly connected to the support frame, and the operating screw rod can control the up and down movement of the upper pressing rod. The characteristics are as follows: A lower pressing rod is clamped on the support frame below the upper pressing rod through a limit seat to prevent the lower pressing rod from slipping. First limit components, second limit components, third limit components and fourth limit components are respectively arranged on the support frame corresponding to the lower pressing rod. The first limit components and the second limit components contact the PE gas pipe so that one end of the support frame forms a stable state, and the third limit components and the fourth limit components contact the PE gas pipe so that the other end of the support frame forms a stable state.

[0006] The support frame is a rectangular body with a "冂"-shaped cross section. Chutes are respectively arranged at both ends of the support frame. The chutes are rectangular in shape and are fitted with the upper pressing rod and the lower pressing rod in a matching manner.

[0007] The upper pressing rod and the lower pressing rod are respectively cylinders.

[0008] Limit convex columns are respectively arranged on the circumferences at both ends of the upper pressing rod. The limit convex columns are in sliding contact with the support frame, and the limit convex columns effectively ensure the smoothness of the up and down sliding of the upper pressing rod along the support frame.

[0009] The limit seat is a rectangular body with an "L"-shaped cross section.

[0010] The first limit components, the second limit components, the third limit components and the fourth limit components respectively include upper ear plates, lower ear plates, movable rods and pressing plates. A movable rod is movably inserted between the upper ear plate and the lower ear plate. A fixing plate is fixedly installed at the top end of the movable rod. One end of the fixing plate extends to the outside of the upper ear plate. A pressing plate is eccentrically hinged on the fixing plate extending to the outside of the upper ear plate. The pressing plate is in contact connection with the upper ear plate. One end of the movable rod extends to the outside of the lower ear plate. A limit boss is arranged on the movable rod extending to the outside of the lower ear plate. The limit boss is in抵触 connection with the lower ear plate. A rotating rod is sleeved on the movable rod between the upper ear plate and the lower ear plate. The upper ear plate and the lower ear plate are in matching meshing connection with the rotating rod.

[0011] An upper boss is fixedly installed on the upper ear plate corresponding to the rotating rod. A first end face tooth is arranged on the upper boss. A lower boss is fixedly installed on the lower ear plate corresponding to the rotating rod. A second end face tooth is arranged on the lower boss. An upper end face tooth is arranged on the rotating rod corresponding to the first end face tooth. The upper end face tooth is in meshing connection with the first end face tooth. A lower end face tooth is arranged on the rotating rod corresponding to the second end face tooth. The lower end face tooth is in meshing connection with the second end face tooth.

[0012] The rotating rod is in a straight rod shape, and a limit rod is arranged at the end of the rotating rod.

[0013] The beneficial effects of the present utility model compared with the prior art are as follows: This gas-stopping device for PE gas pipes works by straddling the PE gas pipe to be stopped, inserting a lower clamping rod into the groove of the support frame below the PE gas pipe, and then pulling up the pressure rods of the first, second, third, and fourth limiting components unlocks the rotating rod on the upper and lower ear plates. This controls the rotating rods of each limiting component to swing around the axis of the movable rod, causing the limiting rod of the rotating rod to contact the circumference of the PE gas pipe. Pressing the pressure rod again locks the rotating rod back in place. Thus, the first and second limiting components, through which one end of the support frame is positioned relative to the PE gas pipe... The pipe forms a limit, and the third and fourth limit components limit the support frame relative to the other end of the PE gas pipe, thus limiting the support frame and preventing it from swinging during the rotation of the screw to stop the gas flow. The operator rotates the operating screw, causing the upper clamping rod to slide down the groove of the support frame towards the lower clamping rod. The upper and lower clamping rods physically compress the PE gas pipe, deforming it and flattening its cross-section, thus blocking the flow of gas or liquid. This sealing method is non-destructive and can achieve temporary sealing without damaging the pipeline. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention in operation; Figure 2 This is a three-dimensional structural diagram of the first limiting component in this utility model; Figure 3 This is a front view structural diagram of the present utility model; Figure 4 This is a top view of the structure of this utility model; Figure 5 This is a three-dimensional structural diagram of an existing PE pipe stopper in the background art during operation.

[0015] In the diagram: 1. Support frame; 2. Slide groove; 3. Upper clamping rod; 4. Lower clamping rod; 5. Limiting protrusion; 6. Limiting seat; 7. First limiting assembly; 8. Second limiting assembly; 9. Third limiting assembly; 10. Fourth limiting assembly; 11. Upper ear plate; 12. Lower ear plate; 13. Movable rod; 14. Pressure plate; 15. Fixed plate; 16. Limiting boss; 17. Upper boss; 18. Lower boss; 19. Rotating rod; 20. Limiting rod; 21. PE gas pipe; 22. Operating screw; 23. Movable seat. Detailed Implementation

[0016] As attached Figure 1-5 As shown The gas stop device for PE gas pipes includes a support frame 1. The support frame 1 is a rectangular body with a "冂"-shaped cross-section. Chutes 2 are respectively arranged at both ends of the support frame 1. The chutes 2 are rectangular in shape. The upper pressing rod 3 and the lower pressing rod 4 are respectively cylinders. The chutes 2 are fitted with the upper pressing rod 3 and the lower pressing rod 4 in an inserted manner. The upper pressing rod 3 is movably installed in the chute 2 of the support frame 1. An operating screw rod 22 is movably installed on the upper pressing rod 3 through a movable seat 23. The operating screw rod 22 is threadedly connected to the support frame 1. During use, by rotating the operating screw rod 22, the operating screw rod 22 can control the up-and-down movement of the upper pressing rod 3 along the chute 2 of the support frame 1.

[0017] Limit convex columns 5 are respectively arranged on the circumferences at both ends of the upper pressing rod 3. The limit convex columns 5 are in sliding contact with the support frame 1. The limit convex columns 5 effectively ensure the smoothness of the up-and-down sliding of the upper pressing rod 3 along the chute 2 of the support frame 1.

[0018] The lower pressing rod 4 is inserted into the chute 2 of the support frame 1 below the upper pressing rod 3. Limit seats 6 are arranged at both ends of the lower pressing rod 4. The limit seats 6 are rectangular bodies with an "L"-shaped cross-section. One end of the limit seat 6 is fixedly installed on the support frame 1, and the other end of the limit seat 6 is in contact connection with the end of the lower pressing rod 4. During use, the lower pressing rod 4 is limited by the limit seats 6 at its left and right ends to prevent the lower pressing rod 4 from accidentally sliding in the chute 2.

[0019] First limit components 7, second limit components 8, third limit components 9 and fourth limit components 10 are respectively arranged on the support frame 1 corresponding to the lower pressing rod 4. The first limit components 7 and the second limit components 8 are in contact with the PE gas pipe 21 to make one end of the support frame 1 in a stable state, and the third limit components 9 and the fourth limit components 10 are in contact with the PE gas pipe 21 to make the other end of the support frame 1 in a stable state.

[0020] The first limiting assembly 7, the second limiting assembly 8, the third limiting assembly 9, and the fourth limiting assembly 10 each include an upper ear plate 11, a lower ear plate 12, a movable rod 13, and a pressure plate 14. The upper ear plate 11 and the lower ear plate 12 are fixedly mounted on the support frame 1. A movable rod 13 is movably inserted between the upper ear plate 11 and the lower ear plate 12. The movable rod 13 is round. A fixing plate 15 is fixedly mounted on the top end of the movable rod 13. One end of the fixing plate 15 extends to the outside of the upper ear plate 11. A pressure plate 14 is eccentrically hinged to the fixing plate 15 extending to the outside of the upper ear plate 11. The pressure plate 14 is in contact with the upper ear plate 11. One end of the movable rod 13 extends to the outside of the lower ear plate 12. A limiting boss 16 is provided on the outer movable rod 13. The limiting boss 16 abuts against the lower ear plate 12. A rotating rod 19 is fitted on the movable rod 13 between the upper ear plate 11 and the lower ear plate 12. The rotating rod 19 is straight and a limiting rod 20 is provided at the end of the rotating rod 19. In use, the limiting rod 20 contacts the circumference of the PE gas pipe 21, which can limit the support frame 1 relative to the PE gas pipe 21. The upper ear plate 11 and the lower ear plate 12 are engaged with the rotating rod 19. The number of teeth on the end face determines the adjustment accuracy. The denser the teeth, the more adjustment levels there are. This is common knowledge in the field. The appropriate number of teeth on the end face can be set according to actual needs, so it will not be elaborated here.

[0021] An upper boss 17 is fixedly installed on the upper ear plate 11 corresponding to the rotating rod 19. The upper boss 17 is cylindrical and has a first end face tooth. A lower boss 18 is fixedly installed on the lower ear plate 12 corresponding to the rotating rod 19. The lower boss 18 is cylindrical and has a second end face tooth. The rotating rod 19 corresponding to the first end face tooth has an upper end face tooth that meshes with the first end face tooth. The rotating rod 19 corresponding to the second end face tooth has a lower end face tooth that meshes with the second end face tooth. In use, when the pressure rod is pulled down, because the pressure rod is eccentrically set, when the pressure rod rotates around the hinge point, its structure... A vertical upward pressure is applied to the movable rod 13, while a downward pressure is applied to the upper ear plate 11. The pressure causes the upper end face teeth to mesh with the first end face teeth, and the lower end face teeth to mesh with the second end face teeth. By using the "form-locking" of the teeth and the "force-locking" brought by the pressure, the rotation of the rotating rod 19 is prevented, and the rotating rod 19 is rigidly locked. This not only allows for precise position adjustment but also ensures stability after locking. The swing angle of the rotating rod 19 can be adjusted by the limiting components (first limiting component 7, second limiting component 8, third limiting component 9, and fourth limiting component 10), which can be used to limit PE gas pipes 21 of different diameters.

[0022] When using the gas-stopping device for PE gas pipes, first straddle the PE gas pipe 21 to be stopped, so that the upper clamping rod 3 contacts the circumference of the PE gas pipe 21. Then, insert the lower clamping rod 4 into the slide groove 2 of the support frame 1 below the PE gas pipe 21, so that both ends of the lower clamping rod 4 contact the limiting seat 6. The limiting seats 6 at both ends limit the lower clamping rod 4, preventing the lower clamping rod 4 from accidentally slipping in the slide groove 2.

[0023] After the above work is completed, the pressure rods of the first limiting component 7, the second limiting component 8, the third limiting component 9, and the fourth limiting component 10 are pulled upwards. The upper boss 17 of the upper ear plate 11 and the lower boss 18 of the lower ear plate 12 unlock the rotating rod 19, thereby controlling the rotating rod 19 of the first limiting component 7, the second limiting component 8, the third limiting component 9, and the fourth limiting component 10 to swing around the axis of the movable rod 13, so that the limiting rod 20 of the rotating rod 19 contacts the circumference of the PE gas pipe 21. Pressing the pressure rod again will relock the rotating rod 19. Thus, the first limiting component 7 and the second limiting component 8 limit one end of the support frame 1 relative to the PE gas pipe 21, and the third limiting component 9 and the fourth limiting component 10 limit the other end of the support frame 1 relative to the PE gas pipe 21, thereby limiting the support frame 1 and preventing the support frame 1 from swinging during the gas shut-off process.

[0024] Thus, the gas shut-off operation of the PE gas pipe 21 can begin. The operator rotates the operating screw 22, causing the upper clamping rod 3 to slide along the slide groove 2 of the support frame 1 towards the lower clamping rod 4. The upper clamping rod 3 and the lower clamping rod 4 physically compress the PE gas pipe 21, causing it to be squeezed and deformed. The cross-section of the PE gas pipe 21 is flattened, and the flow channel is blocked, thereby preventing the flow of gas or liquid. This sealing method is non-destructive and can achieve temporary sealing without damaging the pipeline.

[0025] The gas-stopping device for PE gas pipes can be used with only the first limiting component 7 and the second limiting component 8 for unilateral limiting, or only the third limiting component 9 and the fourth limiting component 10 for unilateral limiting, to adapt to different complex environments.

Claims

1. A gas-stopping device for PE gas pipes, comprising a support frame (1), an upper clamping rod (3) movably mounted inside the support frame (1), an operating screw (22) movably mounted on the upper clamping rod (3) via a movable seat (23), the operating screw (22) being threadedly connected to the support frame (1), and the operating screw (22) controlling the up-and-down movement of the upper clamping rod (3), characterized in that: A lower pressing rod (4) is clamped on a support frame (1) below an upper pressing rod (3) through a limit seat (6) to prevent the lower pressing rod (4) from slipping. On the support frame (1) corresponding to the lower pressing rod (4), a first limit component (7), a second limit component (8), a third limit component (9) and a fourth limit component (10) are respectively arranged. The first limit component (7) and the second limit component (8) are in contact with a PE gas pipe (21) so that one end of the support frame (1) forms a stable state, and the third limit component (9) and the fourth limit component (10) are in contact with the PE gas pipe (21) so that the other end of the support frame (1) forms a stable state.

2. The gas-stopping device for PE gas pipes according to claim 1, characterized in that: The support frame (1) is a rectangular body with a "冂"-shaped cross section. Chutes (2) are respectively arranged at both ends of the support frame (1). The chutes (2) are rectangular in shape and are inserted in cooperation with the upper pressing rod (3) and the lower pressing rod (4).

3. The gas-stopping device for PE gas pipes according to claim 1, characterized in that: The upper pressing rod (3) and the lower pressing rod (4) are respectively cylinders.

4. A gas-stopping device for PE gas pipes according to claim 1, characterized in that: Limit convex columns (5) are respectively arranged on the circumferences at both ends of the upper pressing rod (3). The limit convex columns (5) are in sliding contact with the support frame (1), and the limit convex columns (5) effectively ensure the smoothness of the up and down sliding of the upper pressing rod (3) along the support frame (1).

5. A gas-stopping device for PE gas pipes according to claim 1, characterized in that: The limit seat (6) is a rectangular body with an "L"-shaped cross section.

6. A gas-stopping device for PE gas pipes according to claim 1, characterized in that: The first limit component (7), the second limit component (8), the third limit component (9) and the fourth limit component (10) respectively include an upper ear plate (11), a lower ear plate (12), a movable rod (13) and a pressing plate (14). The movable rod (13) is movably inserted between the upper ear plate (11) and the lower ear plate (12). A fixing plate (15) is fixedly installed at the top end of the movable rod (13). One end of the fixing plate (15) extends to the outside of the upper ear plate (11). A pressing plate (14) is eccentrically hinged on the fixing plate (15) extending to the outside of the upper ear plate (11). The pressing plate (14) is in contact connection with the upper ear plate (11). One end of the movable rod (13) extends to the outside of the lower ear plate (12). A limit boss (16) is arranged on the movable rod (13) extending to the outside of the lower ear plate (12). The limit boss (16) is in抵触 connection with the lower ear plate (12). A rotating rod (19) is sleeved on the movable rod (13) between the upper ear plate (11) and the lower ear plate (12). The upper ear plate (11) and the lower ear plate (12) are in meshing connection with the rotating rod (19) in cooperation.

7. A gas-stopping device for PE gas pipes according to claim 6, characterized in that: An upper boss (17) is fixedly installed on the upper ear plate (11) corresponding to the rotating rod (19). A first end face tooth is arranged on the upper boss (17). A lower boss (18) is fixedly installed on the lower ear plate (12) corresponding to the rotating rod (19). A second end face tooth is arranged on the lower boss (18). An upper end face tooth is arranged on the rotating rod (19) corresponding to the first end face tooth. The upper end face tooth is in meshing connection with the first end face tooth. A lower end face tooth is arranged on the rotating rod (19) corresponding to the second end face tooth. The lower end face tooth is in meshing connection with the second end face tooth.

8. A gas-stopping device for PE gas pipes according to claim 6, characterized in that: The rotating rod (19) is in the shape of a straight rod, and a limit rod (20) is arranged at the end of the rotating rod (19).

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