Pipeline plugging device for gas engineering

Abstract

The utility model provides a pipeline plugging device for gas engineering, which comprises a pipeline and a plugging valve, the end part of the pipeline is provided with a circumferential surrounding convex ring, the plugging valve is sleeved at the end part of the pipeline, the plugging valve comprises an embedded end and an exposed end, one end of the embedded end is embedded in the pipeline, the end opening of the embedded end is closed, and the other end of the exposed end extends out of the pipeline. A through hole is formed in a closed port of the embedded end, a sliding rod penetrates into the through hole, the end, extending into the pipeline, of the sliding rod is fixedly connected with a sealing valve, the other end of the sliding rod is fixedly connected with a top plate, a rotating shaft is arranged on the edge of the end of the exposed end, a linkage rod is connected to the rotating shaft, and the linkage rod is fixedly connected with the pipeline. One end of the linkage rod extends to the top plate, the other end of the linkage rod extends to the protruding ring, and a clamping groove connected with the protruding ring in a matched and clamped mode is formed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas pipeline technology field, specifically, a pipeline plugging device for gas engineering. BACKGROUND

[0002] The gas pipeline plugging device is a device for repairing and overhauling gas pipelines, which can form a closed space inside the pipeline to facilitate the repair and overhaul of the pipeline.

[0003] The gas pipeline plugging device usually consists of two main parts: a plugging head and a support frame. The plugging head is the core component of the device, usually made of rubber or other elastic materials, which can adapt to different diameters and lengths of pipelines. The plugging head usually includes a sealing ring and an inflation valve, which inflates the inside of the plugging head through the inflation valve, making it expand and tightly fit the inner wall of the pipeline, thereby achieving the plugging of the pipeline. The support frame is used to fix the position of the plugging head, usually made of metal material, which can be adjusted according to the diameter and length of the pipeline. When using the gas pipeline plugging device, first, the plugging head needs to be installed at both ends of the pipeline, and the inside of the plugging head is inflated through the inflation valve, making it expand and tightly fit the inner wall of the pipeline. Then, the plugging head is fixed in place by the support frame to ensure that it does not move or fall off. Finally, the repair and overhaul of the pipeline can be carried out, and after completion, the gas inside the plugging head is discharged through the deflation valve, and the plugging head is removed to complete the repair work.

[0004] The existing gas pipeline plugging device is prone to slipping and falling off under high pressure after being fixed, thereby causing use risks. UTILITY MODEL CONTENTS

[0005] In order to overcome the above technical problems, the utility model provides a pipeline plugging device for gas engineering to improve the problem of falling off due to excessive gas pressure.

[0006] In order to achieve the above purpose, the utility model provides a pipeline plugging device for gas engineering, which comprises a pipeline with a circumferentially surrounding protruding ring formed at the end, a plugging valve sleeved at the end of the pipeline, the plugging valve comprising an embedded end embedded in the pipeline with a closed port and an exposed end extended out of the pipeline, a through hole formed on the closed port of the embedded end, a sliding rod inserted into the through hole, a sealing valve fixedly connected to one end of the sliding rod inserted into the pipeline, a top plate fixedly connected to the other end of the sliding rod, a rotating shaft provided on the edge of the end of the exposed end, a connecting rod connected to the rotating shaft, one end of the connecting rod extended to the top plate and the other end extended to the protruding ring, and a clamping groove formed on the connecting rod matched with the protruding ring.

[0007] The role of the blocking valve is to block the port of the pipeline, so that the gas does not leak. The embedded end of the blocking valve is embedded with the inner wall of the pipeline, and the periphery of the sealing valve connected on the embedded end is embedded with the inner wall of the pipeline. After blocking the port of the pipeline, the pipeline is pressurized to input gas, and the pressure pushes the sealing valve to move towards the embedded end of the blocking valve until it is tightly closed. The sealing valve drives the sliding rod to move and pushes the top plate outward. The top plate pushes one end of the linkage rod outward, and the other end of the linkage rod is pressed tightly to the outer wall of the pipeline through the pivot, so that the clamping groove and the protruding ring are buckled, and the purpose of locking the blocking valve at the port of the pipeline is achieved.

[0008] Preferably, a sealing ring is arranged outside the closed port of the embedded end.

[0009] A sealing ring is arranged outside the closed port of the embedded end, which can make the sealing effect better when the sealing valve cooperates with the embedded end.

[0010] Preferably, the outer peripheral side of the sealing valve near the embedded end is an arc chamfer structure.

[0011] The outer peripheral side of the sealing valve is provided with an arc chamfer structure, which can reduce the incomplete fitting with the fitting surface and form two corner blockades to increase the sealing of the blockage.

[0012] Preferably, the side of the sealing ring near the sealing valve is formed with an arc-shaped sealing surface matched with the arc-shaped chamfer structure of the sealing valve.

[0013] An arc-shaped sealing surface is arranged on the sealing ring to cooperate with the arc-shaped chamfer of the sealing valve, so that the fitting degree is more closely and the sealing effect is enhanced.

[0014] Preferably, the sealing valve is composed of a plurality of sealing pieces arranged side by side.

[0015] The sealing valve is provided with a plurality of sealing pieces stacked and cooperated to form a multiple sealing blockage effect, further increasing the sealing effect.

[0016] Preferably, a plurality of pivots are connected to the exposed end.

[0017] A plurality of pivots are arranged, corresponding to a plurality of linkage rods. When the linkage rod moves outward, it is stressed, buckling the protruding ring of the outer wall of the pipeline, so that the blocking valve is fixed more firmly with the pipeline. After the gas pressure in the pipeline is zero, the blocking valve needs to be removed. Only the end of the linkage rod near the top plate is pressed inward, and the linkage rod and the protruding ring are separated, so that the blocking valve can be removed.

[0018] Preferably, the sealing valve is made of rubber material.

[0019] The rubber material can be deformed appropriately, which can better play the sealing role.

[0020] Preferably, the sealing ring is made of rubber material.

[0021] The purpose of using rubber materials for sealing rings and sealing valves is the same, which will not be repeated here.

[0022] The utility model provides a pipeline sealing device for gas engineering, which is provided with a sealing valve. The pressure-bearing sealing valve drives the top plate to move, so that the connecting rod fastens the raised ring and firmly fixes the sealing valve to the end of the pipeline. The greater the pressure in the pipeline, the greater the fastening force of the connecting rod, thereby ensuring that the sealing valve is stable and firm in the working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a blocking valve provided in an embodiment of the present utility model;

[0024] Figure 2 A schematic diagram of the internal structure of the blocking valve provided in an embodiment of the present utility model.

[0025] Description of Reference Numerals

[0026] 1. Pipe; 2. Raised ring; 3. Embedded end; 4. Exposed end; 5. Through hole; 6. Sliding rod; 7. Sealing valve; 8. Top plate; 9. Rotating shaft; 10. Linking rod; 11. Slot; 12. Sealing ring. DETAILED DESCRIPTION

[0027] The following describes embodiments of the present invention with reference to the accompanying drawings. Elements and features described in one drawing or one embodiment of the present invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that for the sake of clarity, the drawings and descriptions omit the representation and description of components or processes that are not relevant to the present invention and are known to those of ordinary skill in the art.

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] like Figure 1 、 Figure 2 As shown, the pipeline sealing device for gas engineering provided by the utility model includes a pipeline 1 with a circumferentially surrounding raised ring 2 formed at the end, a sealing valve sleeved on the end of the pipeline 1, the sealing valve including an embedded end 3 with one end embedded in the pipeline 1 and a closed port, and an exposed end 4 extending out of the pipeline 1 at the other end, a through hole 5 is formed on the closed port of the embedded end 3, a sliding rod 6 is inserted into the through hole 5, one end of the sliding rod 6 extending into the pipeline 1 is fixedly connected to a sealing valve 7, the other end of the sliding rod 6 is fixedly connected to a top plate 8, a rotating shaft 9 is provided on the end edge of the exposed end 4, a connecting rod 10 is connected to the rotating shaft 9, one end of the connecting rod 10 extends to the top plate 8, and the other end extends to the raised ring 2, and is formed with a card groove 11 that cooperates with the raised ring 2.

[0030] The plugging valve is used for plugging the port of the pipeline 1 to prevent gas from leaking. The embedded end 3 of the plugging valve is embedded with the inner wall of the pipeline 1, and the periphery of the sealing valve 7 connected to the embedded end 3 is embedded with the inner wall of the pipeline 1. After the port of the pipeline 1 is plugged, the pipeline 1 is pressurized to input gas, and the pressure pushes the sealing valve 7 to move towards the embedded end 3 of the plugging valve until the sealing valve 7 is tightly closed with the embedded end 3. The sealing valve 7 drives the sliding rod 6 to move and pushes the top plate 8 outward. The top plate 8 pushes one end of the linkage rod 10 outward, and the other end of the linkage rod 10 is pressed against the outer wall of the pipeline 1 through the rotating shaft 9, so that the clamping groove 11 is buckled with the protruding ring 2, and the plugging valve is locked at the port of the pipeline 1.

[0031] In an embodiment of the utility model, the sealing ring 12 is arranged outside the closed port of the embedded end 3.

[0032] The sealing ring 12 is arranged outside the closed port of the embedded end 3, which can make the sealing effect of the sealing valve 7 better when cooperating with the embedded end 3.

[0033] In an embodiment of the utility model, the outer peripheral side of the sealing valve 7 near the embedded end 3 is an arc chamfer structure.

[0034] The outer peripheral side of the sealing valve 7 is arranged as an arc chamfer structure, which can reduce the incomplete abutment with the abutment surface and form two corner plugging to increase the sealing property of plugging.

[0035] In an embodiment of the utility model, the sealing ring 12 is arranged outside the closed port of the embedded end 3.

[0036] The arc-shaped sealing surface is arranged on the sealing ring 12, which cooperates with the arc chamfer of the sealing valve 7 to make the abutment more closely and enhance the sealing effect.

[0037] In an embodiment of the utility model, the sealing valve 7 is composed of a plurality of sealing pieces arranged side by side.

[0038] The sealing valve 7 is arranged with a plurality of sealing pieces stacked and cooperated to form a multiple sealing plugging effect and further increase the sealing effect.

[0039] In an embodiment of the utility model, a plurality of rotating shafts 9 are connected to the exposed end 4.

[0040] A plurality of rotating shafts 9 are arranged, so that a plurality of linkage rods 10 are correspondingly installed. When the linkage rod 10 moves outward from the top plate 8, the linkage rod 10 is stressed to buckle the protruding ring 2 of the outer wall of the pipeline 1, so that the plugging valve is fixed more firmly with the pipeline 1. After the gas pressure in the pipeline 1 is zero, the plugging valve needs to be removed. Only the end of the linkage rod 10 near the top plate 8 is pressed inward, and then the linkage rod 10 is separated from the protruding ring 2, so that the plugging valve can be removed.

[0041] In one embodiment of the utility model, the sealing valve 7 is made of rubber material.

[0042] The rubber material can be deformed appropriately, and can better play a sealing role.

[0043] In one embodiment of the utility model, the sealing ring 12 is made of rubber material.

[0044] The sealing ring 12 and the sealing valve 7 adopt the same rubber material, and details are not repeated here.

[0045] The pipeline plugging device for gas engineering provided by the utility model sets the sealing valve 7, the sealing valve 7 under pressure drives the top plate 8 to move, thereby making the connecting rod 10 buckle the convex ring 2, and the plugging valve is fixed firmly at the end of the pipeline 1, and the greater the pressure in the pipeline 1, the greater the force of the connecting rod 10, which guarantees that the plugging valve is stable and firm in the working state.

[0046] Although the utility model and its advantages have been described in detail, it should be understood that various changes, substitutions and transformations can be made without exceeding the spirit and scope of the utility model defined by the appended claims. Moreover, the scope of the present application is not limited to the specific embodiments of the processes, devices, means, methods and steps described in the specification. Those skilled in the art will readily understand from the disclosure of the utility model that processes, devices, means, methods or steps that are currently available and will be developed in the future can be used according to the utility model to perform functions substantially the same as the corresponding embodiments described herein or obtain substantially the same results. Therefore, the appended claims are intended to include such processes, devices, means, methods or steps within their scope.

Claims

1. A pipe plugging device for gas engineering, comprising a pipe (1) whose end is formed with a circumferentially surrounding protruding ring (2), and a plugging valve which is fitted to the end of the pipe (1), characterized in that The closing valve comprises an embedded end (3) embedded in the pipeline (1) and having a closed port, and an exposed end (4) extending out of the pipeline (1), a through hole (5) is formed on the closed port of the embedded end (3), a sliding rod (6) is penetrated into the through hole (5), one end of the sliding rod (6) extends into the pipeline (1) and is fixedly connected with a sealing valve (7), the other end of the sliding rod (6) is fixedly connected with a top plate (8), a rotating shaft (9) is arranged on the edge of the exposed end (4), the rotating shaft (9) is connected with a connecting rod (10), one end of the connecting rod (10) extends to the top plate (8), and the other end extends to the protruding ring (2) and forms a clamping groove (11) matched with the protruding ring (2).

2. The pipe plugging device for gas engineering according to claim 1, characterized in that A sealing ring (12) is arranged outside the closed port of the embedded end (3).

3. The pipe plugging device for gas engineering according to claim 2, characterized in that The outer circumferential side of the sealing valve (7) close to the embedded end (3) is an arc chamfer structure.

4. The pipe plugging device for gas engineering according to claim 3, characterized in that An arc sealing surface matched with the arc chamfer structure of the sealing valve (7) is formed on the side of the sealing ring (12) close to the sealing valve (7).

5. The pipe plugging device for gas engineering according to claim 4, characterized in that The sealing valve (7) is composed of a plurality of sealing pieces arranged side by side.

6. The pipe plugging device for gas engineering according to claim 5, characterized in that A plurality of rotating shafts (9) are connected to the exposed end (4).

7. The pipe plugging device for gas engineering according to claim 6, characterized in that The sealing valve (7) is made of rubber material.

8. The gas-engineering-piping plugging device according to claim 7, characterized in that The sealing ring (12) is made of rubber material.

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