A gas pipeline plugging device

Abstract

The utility model discloses a kind of gas pipeline plugging devices, belong to pipeline plugging technical field, including connecting plate, bracket, lower pipe clamp, upper pipe clamp, the top middle of upper pipe clamp is fixed with jack, the top of jack is fixed with connecting plate, the two sides of jack are about its symmetry and be equipped with tension spring, tension spring both ends are hung on connecting plate and upper pipe clamp respectively, the top of the two ends of upper pipe clamp is fixed with guide rod, guide rod is sleeved with guide branch plate, guide branch plate is fixed on bracket inner wall, the two ends of upper pipe clamp are equipped with multiple limit disc, the bottom of each limit disc is equipped with limit plane, the distance of the limit plane of each limit disc to its central axis is not equal. The utility model is convenient upper pipe clamp automatic reset, prevent clamping deviation;Multiple limit disc of different limit plane distance can be flexibly replaced according to the pipe thickness of the gas PE pipe to be plugged, and upper pipe clamp and lower pipe clamp can be prevented excessive clamping, damage pipe body.

Description

Technical Field

[0001] This utility model relates to the field of pipeline sealing technology, specifically a gas pipeline sealing device. Background Technology

[0002] During the laying, repair, or renovation of gas pipelines, temporary sealing of the gas PE pipes in the construction section is necessary to prevent gas leaks and related safety accidents. Existing gas pipeline sealing devices mostly use a clamping structure to tighten and seal the pipeline. However, these devices often lack sufficient guiding accuracy during clamping, leading to clamping deviation and sealing failure. Furthermore, releasing the pipe requires reverse rotation of the screw, which is cumbersome. Additionally, the lack of a limiting structure makes it easy to damage the pipeline during clamping. Utility Model Content

[0003] This invention provides a gas pipeline sealing device to solve the problems existing in the background art.

[0004] This utility model relates to a gas pipeline sealing device, including a connecting plate. Two U-shaped support tubes are fixed at both ends of the connecting plate. A removable lower clamping pipe is provided in the bottom groove of the support tube. An upper clamping pipe is provided directly above the lower clamping pipe. A jack is fixed in the middle of the top of the upper clamping pipe. The top of the jack is fixed to the connecting plate. Tension springs are symmetrically provided on both sides of the jack. The two ends of the tension springs are respectively hung on the connecting plate and the upper clamping pipe. Guide rods are fixed at the top of both ends of the upper clamping pipe. Guide support plates are sleeved on the guide rods and fixed to the inner wall of the support tubes. Multiple limiting plates are provided at both ends of the upper clamping pipe. Each limiting plate has a limiting plane at its bottom. The distances from the limiting planes of the multiple limiting plates to their central axes are not equal.

[0005] Both ends of the lower and upper clamping tubes are fixed with sealing plates, and the top of the lower clamping tube has a limiting recess that mates with the limiting plane. The sealing plates enhance the structural strength of the lower and upper clamping tubes, preventing deformation due to excessive force during clamping; they also prevent soil from entering. The precise fit between the limiting plane and the limiting recess further improves the positioning accuracy when the upper and lower clamping tubes are clamped, and the limiting support is more stable.

[0006] A locking bolt is located at the center of the limiting plate. The sealing plate of the upper clamping tube has a threaded hole and two positioning holes. The limiting plate has positioning pins that mate with the positioning holes. The engagement of the positioning pins with the positioning holes enables rapid positioning of the limiting plane.

[0007] The lower clamp tube has limit posts fixed at both ends. The bottom of each limit post has a threaded section with a diameter smaller than the limit post, and a lock nut is installed on the threaded section. The bottom of the support tube has an arc-shaped support plate, and the outer side of the support plate has a connecting flange with a through hole that mates with the threaded section. The limit posts limit the axial movement of the lower clamp tube, preventing axial displacement during clamping. The support plate, threaded section, and lock nut prevent the lower clamp tube from moving upwards during clamping.

[0008] The inner wall of the limiting post has a vertical limiting surface that contacts the bottom outer wall of the support tube. The vertical limiting surface has a vertical positioning guide groove, and the bottom outer wall of the support tube has a positioning guide rib that mates with the positioning guide groove. The mate between the positioning guide groove and the positioning guide rib ensures that the limiting recess is always horizontal when installing the lower clamping tube, facilitating mating with the limiting plane.

[0009] A handle is fixed to the top center of the connecting plate, and an installation sleeve is fixed to the top of the jack. The installation sleeve is fixed to the bottom center of the connecting plate.

[0010] The jack has a base plate fixed to its bottom. The bottom of the base plate has an arc groove that mates with the outer wall of the upper clamping pipe. The base plate is welded and fixed to the upper clamping pipe, and multiple reinforcing ribs are welded and fixed between the outer wall of the upper clamping pipe and the base plate. The arc groove ensures a tight fit between the base plate and the outer wall of the upper clamping pipe, improving the sealing and firmness of the connection.

[0011] The guide plate has a mounting hole in the middle, and a limiting screw with clearance fits inside the mounting hole. The bottom of the limiting screw is fixed to the upper clamping pipe. A limiting nut is provided on the limiting screw below the guide plate. Two guide rods are provided at both ends of the upper clamping pipe, and the two guide rods are symmetrically arranged about the limiting screw. The cooperation between the limiting screw and the limiting nut can provide vertical restriction after the lower clamping pipe clamps the pipe, preventing the lower clamping pipe from detaching from the pipe when the jack fails.

[0012] Compared with the prior art, the present invention provides a gas pipeline sealing device, which has the following beneficial effects: The jack provides stable power for the clamping action, and the symmetrically arranged tension springs provide restoring force after the clamping is released; it facilitates the automatic return of the upper clamping pipe, and the cooperation between the guide rod and the guide support plate ensures the guiding accuracy during the lifting and lowering of the upper clamping pipe and prevents clamping deviation; multiple limit plates with different limit plane distances can be flexibly replaced according to the pipe thickness of the gas PE pipe to be sealed, and can prevent the upper and lower clamping pipes from being over-clamped and damaging the pipe body. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle; Figure 3 A schematic diagram of the side structure of the hosting facility; Figure 4 This is a schematic diagram of the limit plate structure; Figure 5 This is a schematic diagram of the bottom structure of the limiting column; In the diagram: 1. Handle; 2. Connecting plate; 3. Support; 4. Tension spring; 5. Jack; 6. Guide support plate; 7. Limiting plate; 8. Base plate; 9. Upper clamping tube; 10. Lower clamping tube; 11. Limiting recess; 12. Support plate; 13. Limiting post; 14. Limiting plane; 15. Mounting sleeve; 16. Guide rod; 17. Limiting screw; 18. Positioning guide groove; 19. Positioning post. Detailed Implementation

[0014] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0015] Figures 1-5 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-5 The present invention will be further described below.

[0016] In Embodiment 1, this utility model discloses a gas pipeline sealing device, including a connecting plate 2. Two U-shaped support tubes 3 are fixed at both ends of the connecting plate 2. A removable lower clamping pipe 10 is provided in the bottom groove of the support tube 3. An upper clamping pipe 9 is provided directly above the lower clamping pipe 10. A jack 5 is fixed in the middle of the top of the upper clamping pipe 9. The top of the jack 5 is fixed to the connecting plate 2. Tension springs 4 are symmetrically provided on both sides of the jack 5. The two ends of the tension springs 4 are respectively hung on the connecting plate 2 and the upper clamping pipe 9. Guide rods 16 are fixed at the top of both ends of the upper clamping pipe 9. Guide support plates 6 are sleeved on the guide rods 16 and fixed on the inner wall of the support tube 3. Multiple limiting plates 7 are provided at both ends of the upper clamping pipe 9. Each limiting plate 7 has a limiting plane 14 at its bottom. The distances from the limiting plane 14 of the multiple limiting plates 7 to their central axis are not equal.

[0017] Based on the thickness of the PE pipe to be sealed, select the limiting plate 7 corresponding to the distance from the limiting plane 14 to the central axis, and fix the limiting plate 7 to both ends of the upper clamping pipe 9. Place the two support tubes 3 on both sides of the PE pipe to be sealed, with the groove of the support tube 3 below the PE pipe. Then, insert both ends of the lower clamping pipe 10 into the groove of the support tube 3, and then extend the jack 5 to drive the upper clamping pipe 9 downward. The downward movement of the upper clamping pipe 9 applies pressure to the top of the PE pipe, which, together with the lower clamping pipe 10, flattens the PE pipe, thereby stopping the gas flow of the PE pipe used in the gas transmission system, thus completing the gas cut-off operation. When the jack 5 is depressurized, the upper clamping pipe 9 will return to its original position under the action of the tension spring 4.

[0018] In Example 2, based on Example 1, both ends of the lower clamp 10 and the upper clamp 9 are fixed with sealing plates. The top of the lower clamp 10 is provided with a limiting recess 11 that mates with the limiting plane 14. When the upper clamp 9 moves downward, it is limited when the limiting plane 14 contacts the limiting recess 11, preventing the upper clamp 9 from moving further downward and thus preventing excessive descent that could damage the PE pipe.

[0019] A locking bolt is provided at the center of the limiting plate 7. The sealing plate of the upper clamping tube 9 has a threaded hole and two positioning holes. The limiting plate 7 has a positioning pin 19 that mates with the positioning holes. When the limiting plate 7 is replaced, the positioning pin 19 is inserted into the positioning hole with the limiting plane 14 facing down, and then the limiting plate 7 is fixed to the sealing plate using the locking bolt.

[0020] The bottom ends of the lower clamp tube 10 are fixed with limit posts 13. The bottom of the limit post 13 is provided with a threaded section with a diameter smaller than its own. A locking nut is provided on the threaded section. The bottom of the support tube 3 is provided with an arc-shaped support plate 12. The outer side of the support plate 12 is provided with a connecting flange. The connecting flange is provided with a through hole that mates with the threaded section.

[0021] The inner wall of the limiting post 13 is provided with a vertical limiting surface that contacts the bottom outer wall of the support tube 3. The vertical limiting surface is provided with a vertical positioning guide groove 18, and the bottom outer wall of the support tube 3 is provided with a positioning guide rib that cooperates with the positioning guide groove 18. When the lower clamping tube 10 is placed, the lower clamping tube 10 is placed above the bottom support groove of the support tube 3, and then the positioning guide rib is aligned with the positioning guide groove 18 and slid downward. At this time, the limiting post 13 is limited at the outer walls of the two sides of the support tube 3. Then, the support plate 12 is put on the threaded section, and the support plate 12 supports the bottom of the support tube 3. Then, the locking nut is tightened.

[0022] A handle 1 is fixed to the top center of the connecting plate 2, and an installation sleeve 15 is fixed to the top of the jack 5. The installation sleeve 15 is fixed to the bottom center of the connecting plate 2.

[0023] The bottom of the jack 5 is fixed with a base plate 8. The bottom of the base plate 8 is provided with an arc groove that matches the outer wall of the upper clamping pipe 9. The base plate 8 is welded and fixed to the upper clamping pipe 9. Multiple reinforcing ribs are welded and fixed between the outer wall of the upper clamping pipe 9 and the base plate 8.

[0024] The guide plate 6 has a mounting hole in the middle, and a limiting screw 17 with clearance fits inside the mounting hole. The bottom of the limiting screw 17 is fixed to the upper clamping tube 9. A limiting nut is provided on the limiting screw 17 below the guide plate 6. Two guide rods 16 are provided at both ends of the upper clamping tube 9, and the two guide rods 16 are symmetrically arranged about the limiting screw 17. When the upper clamping tube 9 and the lower clamping tube 10 cooperate to flatten the PE tube and stop the air supply, the limiting nut is rotated so that the limiting nut moves upward and sticks to the bottom of the guide plate 6 for safety protection. After use, before depressurizing the jack 5, the limiting nut is rotated to the lowest position.

[0025] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A gas pipeline sealing device, comprising a connecting plate (2), two U-shaped support tubes (3) fixed at both ends of the connecting plate (2), a removable lower clamping pipe (10) provided in the bottom groove of the support tube (3), and an upper clamping pipe (9) provided directly above the lower clamping pipe (10), characterized in that: A jack (5) is fixed in the middle of the top of the upper clamping tube (9). The top of the jack (5) is fixed to the connecting plate (2). Tension springs (4) are symmetrically arranged on both sides of the jack (5). The two ends of the tension springs (4) are respectively hung on the connecting plate (2) and the upper clamping tube (9). Guide rods (16) are fixed at the top of both ends of the upper clamping tube (9). Guide support plates (6) are sleeved on the guide rods (16). The guide support plates (6) are fixed on the inner wall of the support tube (3). Multiple limiting plates (7) are provided at both ends of the upper clamping tube (9). Each limiting plate (7) has a limiting plane (14) at the bottom. The distances from the limiting planes (14) of the multiple limiting plates (7) to their central axis are not equal.

2. The gas pipeline sealing device according to claim 1, characterized in that: Both ends of the lower clamping tube (10) and the upper clamping tube (9) are fixed with sealing plates. The top of the lower clamping tube (10) is provided with a limiting recess (11) that matches the limiting plane (14).

3. A gas pipeline sealing device according to claim 2, characterized in that: The center of the limiting plate (7) is provided with a locking bolt, the sealing plate of the upper clamping tube (9) is provided with a threaded hole and two positioning holes, and the limiting plate (7) is provided with a positioning pin (19) that cooperates with the positioning hole.

4. A gas pipeline plugging device according to claim 2, characterized in that: The bottom ends of the lower clamp tube (10) are fixed with limit posts (13). The bottom of the limit post (13) is provided with a threaded section with a diameter smaller than its own. A locking nut is provided on the threaded section. The bottom of the support tube (3) is provided with an arc-shaped support plate (12). The outer side of the support plate (12) is provided with a connecting flange. A through hole that mates with the threaded section is provided on the connecting flange.

5. A gas pipeline sealing device according to claim 4, characterized in that: The inner side wall of the limiting post (13) is provided with a vertical limiting surface that contacts the bottom outer side wall of the support (3). The vertical limiting surface is provided with a vertical positioning guide groove (18). The bottom outer side wall of the support (3) is provided with a positioning guide rib that cooperates with the positioning guide groove (18).

6. A gas pipeline sealing device according to claim 1, characterized in that: A handle (1) is fixed at the top center of the connecting plate (2), and an installation sleeve (15) is fixed at the top of the jack (5). The installation sleeve (15) is fixed at the bottom center of the connecting plate (2).

7. A gas pipeline plugging device according to claim 1, characterized in that: The bottom of the jack (5) is fixed with a base plate (8). The bottom of the base plate (8) is provided with an arc groove that matches the outer wall of the upper clamping pipe (9). The base plate (8) is welded and fixed on the upper clamping pipe (9). Multiple reinforcing ribs are welded and fixed between the outer wall of the upper clamping pipe (9) and the base plate (8).

8. A gas pipeline sealing device according to claim 1, characterized in that: The guide plate (6) has a mounting hole in the middle, and a limiting screw (17) with clearance fit is provided in the mounting hole. The bottom of the limiting screw (17) is fixed to the upper clamp tube (9). A limiting nut is provided on the limiting screw (17) below the guide plate (6). Two guide rods (16) are provided at both ends of the upper clamp tube (9). The two guide rods (16) are symmetrically arranged about the limiting screw (17).

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