Pipe orifice plugging device for placing pipeline

Abstract

The utility model discloses a pipe orifice plugging device for placing a pipeline. The pipe orifice plugging device comprises a movable plugging ring which elastically deforms and tightly contacts and abuts against the inner wall of the pipeline; the axial end face of the static plugging column abuts against the movable plugging ring for sealing. Due to the fact that the pushing column is screwed in the inner ring plate of the stress ring and is a solid body, when the pushing column is impacted in the axial direction, the screwing thread pair stops displacement, meanwhile, the pushing column of the solid body cannot be damaged, the movable plugging ring tightly abuts against the inner wall of a pipeline, and the sealing contact position of the movable plugging ring and the shaft end face of the static plugging column cannot lose efficacy. The problem that an expansion body expands through high-pressure gas pressure and is prone to being damaged due to axial impact, and plugging failure occurs is solved.

Description

Technical Field

[0001] The utility model relates to a pipe opening plugging device used for placing a pipeline, belonging to the technical field of pipeline construction. Background Art

[0002] When constructing cable bundling or water diversion at the construction site, it is necessary to bury pipes in the construction site. When the pipes are installed and placed at the construction site but not connected, the pipe openings of the pipes need to be blocked.

[0003] The current pipeline orifice plugging technology is shown in Chinese patent announcement number CN214037344U. Although the expansion body can be filled and expanded to fit the inner wall of the pipeline for plugging, the expansion body is expanded by high-pressure gas pressure, and the expansion body is easily damaged by axial impact, resulting in the problem of plugging failure. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a pipe orifice plugging device for pipeline placement.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides a pipe orifice plugging device for pipeline placement, comprising:

[0007] A dynamic sealing ring that elastically deforms and tightly contacts the inner wall of the pipeline;

[0008] The axial end face abuts against the static sealing column sealed on the dynamic sealing ring.

[0009] It also includes a rigid stress ring, which axially includes an outer ring plate located outside the pipeline and an inner ring plate located inside the pipeline, and a gap between the outer ring plate and the inner ring plate is greater than the thickness of the pipeline;

[0010] A dynamic sealing ring is fixed to the axial end of the inner ring plate located in the pipeline, the middle part of the dynamic sealing ring is in the shape of a through hole, and the dynamic sealing ring is an elastic body; the middle part of the dynamic sealing ring is fixed in the inner ring plate by a T-shaped pull pin, and the dynamic sealing ring is tilted and elastically deformed with the T-shaped pull pin as the tilting point to closely contact the inner wall of the pipeline;

[0011] A static sealing column can slide in the inner ring plate. The static sealing column is larger than the diameter of the middle through hole of the dynamic sealing ring and contacts the dynamic sealing ring. A pushing column is screwed into the inner ring plate through a threaded pair. The pushing column is a solid rigid body, and the static sealing column is an elastic body.

[0012] The dynamic sealing ring and the T-shaped pull pin are integrally formed and fixedly connected, and the dynamic sealing ring and the T-shaped pull pin are elastic rubber bodies constituting an elastic body.

[0013] The force-bearing ring and the driving column are made of iron or steel to form a rigid body; the static blocking column is made of an elastic rubber body to form an elastic body.

[0014] The outside of the push column is provided with six regular faces which are convenient for a wrench to clamp and force-screw.

[0015] The push column is fixedly provided with a step boss and a wave plate, and the step boss and the wave plate are located in the static blocking column.

[0016] The beneficial effect of the utility model is that since the push column is screwed into the inner ring plate of the force ring and is a solid body, the screwed thread pair blocks the displacement when the push column is subjected to axial impact, and at the same time the solid push column will not be damaged, so that the dynamic sealing ring is tightly pressed against the inner wall of the pipeline and the sealing contact between the dynamic sealing ring and the axial end face of the static sealing column will not fail, thus solving the problem that the expansion body is easily damaged by axial impact when it is expanded by high-pressure gas pressure, resulting in sealing failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the main cross-section of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the push column of the utility model.

[0020] In the figure: 1-pipe; 2-stress ring; 21-outer ring plate; 22-inner ring plate; 3-dynamic sealing ring; 31-T-type pull foot; 4-static sealing column; 5-pushing column; 51-regular six-sided surface; 52-step boss; 53-wave plate. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0022] like Figures 1 to 3 shown.

[0023] The present application discloses a pipe orifice plugging device for pipe placement, comprising:

[0024] The stress ring 2 is installed on the pipe mouth of the pipeline 1, and the stress ring 2 has an outer ring plate 21 and an inner ring plate 22 axially, and the outer ring plate 21 and the inner ring plate 22 have a gap greater than the thickness of the pipeline 1; the stress ring 2 is a rigid body composed of components such as iron or steel.

[0025] A dynamic sealing ring 3 is fixed to the axial end of the inner ring plate 22 located in the pipeline 1. The middle part of the dynamic sealing ring 3 is in the shape of a through hole, and the dynamic sealing ring 3 is made of an elastic rubber body. The middle part of the dynamic sealing ring 3 is embedded and fixed in the inner ring plate 22 through a T-shaped pull pin 31. The dynamic sealing ring 3 is flipped over with the T-shaped pull pin 31 as the lifting point, elastically deforms, and closely contacts the inner wall of the pipeline 1.

[0026] A static sealing column 4 can slide in the inner ring plate 22. The static sealing column 4 is larger than the diameter of the middle through hole of the dynamic sealing ring 3 and contacts the dynamic sealing ring 3. A pushing column 5 is screwed into the inner ring plate 22 through a threaded pair. The pushing column 5 is a solid body. The pushing column 5 is a rigid body made of iron or steel components, and the static sealing column 4 is made of hard elastic rubber or the like.

[0027] When in use, the inner surface of the outer ring plate 21 of the force ring 2 is installed at the pipe mouth of the pipeline 1. The force ring 2 uses the end face of the pipe mouth of the pipeline 1 as the force point. The pushing column 5 axially rotates from the inner ring plate 22 to push the static sealing column 4 to press the dynamic sealing ring 3. The dynamic sealing ring 3 uses the T-shaped pull foot 31 as the lifting point to elastically deform and tightly contact the inner wall of the pipeline 1. At the same time, the dynamic sealing ring 3 in contact with the axial end face of the static sealing column 4 elastically deforms and seals to achieve sealing of the pipe mouth of the pipeline 1.

[0028] Since the push column 5 is screwed into the inner ring plate 22 of the force ring 2 and is a solid body, the screwed thread pair blocks the displacement of the push column 5 when it is subjected to axial impact, and at the same time, the solid push column 5 will not be damaged, so that the dynamic sealing ring 3 is tightly pressed against the inner wall of the pipeline 1 and the sealing contact between the dynamic sealing ring 3 and the axial end face of the static sealing column 4 will not fail, thereby solving the problem that the expansion body is easily damaged by axial impact when it is expanded by high-pressure gas pressure, resulting in sealing failure.

[0029] When the static blocking column 4 is released, the push column 5 is unscrewed from the inner ring plate 22, and the elastic sealing contact between the dynamic blocking ring 3, the static blocking column 4 and the inner wall of the pipe 1 is disengaged. The push column 5 is provided with a regular six-sided surface 51 on the outside, so that the wrench can rotate, clamp and force the push column 5 through the regular six-sided surface 51. The push column 5 is axially integrally formed and fixed with a step boss 52 and a wave plate 53. The step boss 52 and the wave plate 53 are in the static blocking column 4. The hard elastic rubber of the static blocking column 4 wraps the step boss 52 and the wave plate 53 when it arrives at the mold, so that the step boss 52 and the wave plate 53 are in the static blocking column 4. The step boss 52 improves the axial tensile strength of the static blocking column 4 and the push column 5, and the wave plate 53 improves the radial rotation torque strength of the static blocking column 4 and the push column 5.

Claims

1. A pipe orifice plugging device for pipeline placement, characterized in that: include: A dynamic sealing ring (3) that elastically deforms and tightly contacts the inner wall of the pipeline (1); The axial end surface abuts against a static sealing column (4) sealed on a dynamic sealing ring (3); It also includes a rigid stress ring (2), the stress ring (2) axially comprising an outer ring plate (21) located outside the pipeline (1) and an inner ring plate (22) located inside the pipeline (1), and a gap between the outer ring plate (21) and the inner ring plate (22) greater than the thickness of the pipeline (1); A dynamic sealing ring (3) is fixed to the axial end of the inner ring plate (22) located in the pipeline (1); the middle of the dynamic sealing ring (3) is in the shape of a through hole, and the dynamic sealing ring (3) is an elastic body; the middle of the dynamic sealing ring (3) is embedded and fixed in the inner ring plate (22) through a T-shaped pull pin (31); the dynamic sealing ring (3) is tilted and elastically deformed with the T-shaped pull pin (31) as the tilting point, and is in close contact with the inner wall of the pipeline (1); A static sealing column (4) is slidable in the inner ring plate (22), the static sealing column (4) is larger than the diameter of the middle through hole of the dynamic sealing ring (3) and contacts the dynamic sealing ring (3); a pushing column (5) is screwed into the inner ring plate (22) through a threaded pair, the pushing column (5) is a solid rigid body, and the static sealing column (4) is an elastic body.

2. The pipe orifice plugging device for pipe placement according to claim 1, characterized in that: The dynamic sealing ring (3) and the T-shaped pull pin (31) are integrally formed and fixedly connected, and the dynamic sealing ring (3) and the T-shaped pull pin (31) are elastic rubber bodies constituting an elastic body.

3. The pipe orifice plugging device for pipe placement according to claim 1, characterized in that: The force-bearing ring (2) and the driving column (5) are made of iron or steel to form a rigid body; the static blocking column (4) is made of an elastic rubber body to form an elastic body.

4. The pipe orifice plugging device for pipe placement according to claim 1, characterized in that: The outside of the push column (5) is provided with a regular hexagonal surface (51) which is convenient for a wrench to clamp and force-screw.

5. The pipe orifice plugging device for pipe placement according to claim 4, characterized in that: The push column (5) is fixedly provided with a step boss (52) and a wave plate (53), and the step boss (52) and the wave plate (53) are located inside the static blocking column (4).

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