Wedge ring compression pipeline plugging device with pressure release function

Abstract

The utility model discloses a wedge ring compression pipeline plugging device with a pressure release function, which comprises a central support ring, a plurality of end plates, a plurality of side wedge rings, a plurality of groups of inner sealing rings and a plurality of groups of outer sealing rings, the inner sealing rings are respectively arranged on two sides of the central support ring, the side wedge rings are arranged on the outer sides of the inner sealing rings, and the outer sealing rings are arranged on the outer sides of the side wedge rings. The end plates are arranged on the outer sides of the side wedge rings, the outer sealing rings are arranged between the end plates and the side wedge rings, a plurality of connecting assemblies for inwards pressing the side wedge rings, the multiple sets of inner sealing rings and the outer sealing rings are installed between the end plates, and the inner sealing rings and the outer sealing rings generate outward and inward extrusion force through the connecting assemblies. The sealing device is simple in structure, the inner sealing ring and the outer sealing ring can be synchronously extruded inwards and outwards in the mode that the end plate can be extruded inwards through the connecting assembly, so that the sealing performance between the penetrating hole and the pipeline and the sealing performance among the end plate, the penetrating hole and the pipeline are ensured, internal redundant gas can be exhausted through the pressure relief pipe and the pressure relief valve, and the sealing effect is good. The plugging quality is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline plugging, in particular to a wedge ring compression pipeline plugging device with a pressure release function. Background Art

[0002] At present, the common methods for blocking water and preventing fire in the holes of cables and pipes passing through structures or protective pipes include plastic mud blocking, inflatable bag blocking, extruded double "U"-shaped rubber ring device blocking, laminated rubber ring blocking, etc. Although they have their own advantages, they still have many shortcomings.

[0003] To address the above-mentioned issues, patent CN 113154135 A discloses a wedge ring compression-type pipeline plugging device. However, the above patent lacks sealing of the end plates, causing external moisture or other impurities to come into contact with the internal outer and inner wedge rings, thereby affecting the service life and sealing performance of both. In addition, during the plugging process, since the internal pressure of the pipeline may increase over time or with changes in fluid temperature, the wedge ring compression plugging method can provide sufficient sealing effect. However, if the internal pressure of the pipeline exceeds the safe range, the pressure release function can avoid plugging failure caused by overpressure, affecting the plugging quality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a wedge ring compression pipeline sealing device with a pressure release function, thereby increasing the sealing performance of the end plate and adding a pressure relief function to solve the problems raised in the above-mentioned background technology.

[0005] The utility model is realized through the following technical scheme: a wedge ring compression pipeline sealing device with a pressure release function, comprising a central support ring, multiple end plates and side wedge rings, multiple groups of inner sealing rings and outer sealing rings, the inner sealing rings are respectively arranged on both sides of the central support ring, the side wedge rings are all arranged on the outside of the inner sealing ring, the end plates are all arranged on the outside of the side wedge rings, the outer sealing ring is arranged between the end plates and the side wedge rings, and multiple connecting components for inwardly pressing the side wedge rings, multiple groups of inner sealing rings and outer sealing rings are installed between the end plates, and the inner sealing rings and the outer sealing rings generate outward and inward extrusion force through the connecting components.

[0006] As a preferred technical solution, the inner sealing ring includes an outer wedge ring and an inner wedge ring. The inner wedge ring is arranged inside the outer wedge ring. A first guide portion is provided on both sides of the outer wedge ring and the inner wedge ring. A second guide portion is provided on both sides of the center support ring, which is in contact with the first guide portion and is used to squeeze the outer wedge ring and the inner wedge ring. A second guide portion is provided on one side of the side wedge ring facing the inner sealing ring, which is in contact with the first guide portion and is used to squeeze the outer wedge ring and the inner wedge ring.

[0007] As an optimal technical solution, a fourth guide portion is provided on the outer side surface of the side wedge ring, the outer sealing ring includes an outer sealing ring and an inner sealing ring, and a fifth guide portion in contact with the fourth guide portion is provided on the side surface of the outer sealing ring and the inner sealing ring facing the side wedge ring, and metal rings are installed on the outer side surfaces of the outer sealing ring and the inner sealing ring, and the metal rings are arranged in contact with the inner side surface of the end plate.

[0008] As a preferred technical solution, the connecting components include screws, screws and nuts. The center support ring, side wedge rings and end plates are provided with multiple axially identical through holes. The screws are arranged in axially opposite through holes. One end of the screw extends to the outside and is fixed to the end plate on one side by a screw, and the other end extends to the outside and is threadedly connected to the nut. The end plates on both sides are pressed inward by nuts.

[0009] As an optimal technical solution, the center support ring, side wedge ring and end plate are all provided with axially identical circular holes. A pressure relief pipe is installed on one end plate, and the other end of the pressure relief pipe extends to the outside through the opposite circular hole and is equipped with a pressure relief valve.

[0010] As a preferred technical solution, an extrusion portion with an annular structure protrudes from the inner side surface of the end plate, and the extrusion portion is arranged to abut against the side wedge ring.

[0011] The beneficial effects of the utility model are as follows: the utility model has a simple structure, and the inner sealing ring and the outer sealing ring can be squeezed inward and outward synchronously by the connection component to squeeze the end plate inward, so as to ensure the sealing between the perforation and the pipeline and the sealing between the end plate, the perforation and the pipeline, and the excess internal gas can be discharged through the pressure relief pipe and the pressure relief valve to avoid affecting the sealing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a side view of the utility model;

[0015] Figure 3 It is a cross-sectional view of the present invention.

[0016] Among them, 1. outer wedge ring; 2. inner wedge ring; 3. outer sealing ring; 4. end plate; 5. pressure relief pipe; 6. pressure relief valve; 7. screw; 8. nut; 9. screw; 11. center support ring; 12. side wedge ring; 13. metal ring; 14. extrusion part. DETAILED DESCRIPTION

[0017] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0018] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.

[0019] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or similar features. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0020] like Figure 1 、 Figure 2 and Figure 3 As shown, the utility model is a wedge ring compression pipeline sealing device with a pressure release function, comprising a central support ring 11, multiple end plates 4 and side wedge rings 12, multiple groups of inner sealing rings and outer sealing rings, the inner sealing rings are respectively arranged on both sides of the central support ring 11, the side wedge rings 12 are all arranged on the outside of the inner sealing rings, the end plates 4 are all arranged on the outside of the side wedge rings 12, and the outer sealing ring is arranged between the end plates 4 and the side wedge rings 12. Multiple connecting components for inwardly pressing the side wedge rings 12, multiple groups of inner sealing rings and outer sealing rings are installed between the end plates 4, and the inner sealing rings and the outer sealing rings generate outward and inward extrusion pressure through the connecting components.

[0021] In this embodiment, the inner sealing ring includes an outer wedge ring 1 and an inner wedge ring 2. The inner wedge ring 2 is arranged inside the outer wedge ring 1. A first guide portion is provided on both sides of the outer wedge ring 1 and the inner wedge ring 2. A second guide portion is provided on both sides of the center support ring 11, which is in contact with the first guide portion and is used to squeeze the outer wedge ring 1 and the inner wedge ring 2. A second guide portion is provided on one side of the side wedge ring 12 facing the inner sealing ring, which is in contact with the first guide portion and is used to squeeze the outer wedge ring 1 and the inner wedge ring 2.

[0022] In this embodiment, a fourth guide portion is provided on the outer side surface of the side wedge ring 12, and the outer sealing ring includes an outer sealing ring 3 and an inner sealing ring. The outer sealing ring 3 and the inner sealing ring are provided with a fifth guide portion in contact with the fourth guide portion on one side facing the side wedge ring 12. Metal rings 13 are installed on the outer side surfaces of the outer sealing ring and the inner sealing ring, and the metal rings 13 are arranged in contact with the inner side surface of the end plate 4.

[0023] In this embodiment, the connecting components include a screw rod 7, a screw 9 and a nut 8. The center support ring 11, the side wedge ring 12 and the end plate 4 are provided with a plurality of axially identical through holes. The screw rods 7 are arranged in axially opposite through holes. One end of the screw rod 7 extends to the outside and is fixed to the end plate 4 on one side by the screw 9, and the other end extends to the outside and is threadedly connected to the nut 8. The end plates 4 on both sides are pressed inward by the nut 8; wherein, a gasket is provided between the nut and the end plate to increase the stability of the nut after installation.

[0024] In this embodiment, circular holes with the same axial direction are provided on the central support ring 11, the side wedge ring 12 and the end plate 4. A pressure relief pipe 5 is installed on the end plate 4 on one side. The other end of the pressure relief pipe 5 extends to the outside through the opposite circular hole and is installed with a pressure relief valve 6. Once high pressure is generated inside the perforated pipe, the internal high pressure can be automatically discharged along the pressure relief pipe and the pressure relief valve, thereby ensuring the sealing of the device after sealing by releasing the pressure.

[0025] In this embodiment, the inner side surfaces of the end plates 4 are protruded with an annular extrusion portion 14, which is arranged to contact the side wedge ring 12. The extrusion portion can make full contact between the end plates and the side wedge ring, thereby being able to extrude them.

[0026] When in use, the device can be put on the pipeline, and the connecting pipeline is inserted into the through-hole. After the nut is rotated, the nut can first squeeze the end plate. The movement of the end plate drives the squeezing part, which can push the side wedge ring. The wedge ring moving inward can squeeze the outer wedge ring and the inner wedge ring inward. The squeezing between the first guide part and the second guide part can make the outer wedge ring expand outward and contact the inner wall surface of the through-hole, while the inner wedge ring shrinks inward and contacts the outer wall surface of the pipeline.

[0027] Among them, the extrusion of the end plate also pushes the metal ring, the outer sealing ring and the inner sealing ring, so that the fifth guide part on the outer sealing ring expands outward along the fourth guide part on the side wedge ring until it collides with the inner wall surface of the perforation, while the inner sealing ring shrinks inward due to the extrusion of the fourth guide part until it collides with the outer wall surface of the pipeline. The outer sealing ring and the inner sealing ring can ensure the sealing between the end plate, the perforation and the pipeline, and avoid external water vapor and impurities from contacting the outer wedge ring and the wedge ring, so as to ensure the service life and sealing quality of the outer wedge ring and the inner wedge ring.

[0028] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that do not require creative effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. A wedge ring compression pipeline plugging device with pressure release function, characterized by: The invention comprises a central support ring (11), a plurality of end plates (4) and side wedge rings (12), a plurality of groups of inner sealing rings and an outer sealing ring, wherein the inner sealing rings are respectively arranged on both sides of the central support ring (11), the side wedge rings (12) are all arranged on the outside of the inner sealing rings, the end plates (4) are all arranged on the outside of the side wedge rings (12), the outer sealing rings are arranged between the end plates (4) and the side wedge rings (12), and a plurality of connecting components for inwardly pressing the side wedge rings (12), the plurality of groups of inner sealing rings and the outer sealing rings are installed between the end plates (4), and the inner sealing rings and the outer sealing rings generate outward and inward extrusion forces through the connecting components.

2. The wedge ring compression pipeline plugging device with pressure release function according to claim 1, characterized in that: The inner sealing rings each comprise an outer wedge ring (1) and an inner wedge ring (2), the inner wedge ring (2) being arranged inside the outer wedge ring (1), first flow guides being provided on both sides of the outer wedge ring (1) and the inner wedge ring (2), second flow guides being provided on both sides of the central support ring (11) and being in contact with the first flow guide and being used to press the outer wedge ring (1) and the inner wedge ring (2), and second flow guides being provided on one side of the side wedge ring (12) facing the inner sealing ring and being in contact with the first flow guide and being used to press the outer wedge ring (1) and the inner wedge ring (2).

3. The wedge ring compression pipeline plugging device with pressure release function according to claim 1, characterized in that: A fourth flow guide portion is provided on the outer side surface of each side wedge ring (12); the outer sealing ring comprises an outer sealing ring (3) and an inner sealing ring; a fifth flow guide portion in contact with the fourth flow guide portion is provided on the side surface of each outer sealing ring (3) and the inner sealing ring facing the side wedge ring (12); a metal ring (13) is installed on the outer side surface of each outer sealing ring and the inner sealing ring; and the metal ring (13) is arranged in contact with the inner side surface of the end plate (4).

4. The wedge ring compression pipeline plugging device with pressure release function according to claim 1, characterized in that: The connection components include a screw rod (7), a screw (9) and a nut (8). The center support ring (11), the side wedge ring (12) and the end plate (4) are provided with a plurality of axially identical through holes. The screw rods (7) are arranged in axially opposite through holes. One end of the screw rod (7) extends to the outside and is fixed to the end plate (4) on one side by the screw (9). The other end extends to the outside and is threadedly connected to the nut (8). The end plates (4) on both sides are pressed inward by the nuts (8).

5. The wedge ring compression pipeline plugging device with pressure release function according to claim 1, characterized in that: The central support ring (11), the side wedge ring (12) and the end plate (4) are all provided with circular holes with the same axial direction. A pressure relief pipe (5) is installed on the end plate (4) on one side. The other end of the pressure relief pipe (5) extends to the outside through the opposite circular hole and is installed with a pressure relief valve (6).

6. The wedge ring compression pipeline plugging device with pressure release function according to claim 1, characterized in that: An extrusion portion (14) with an annular structure is protruded from the inner side surface of the end plate (4), and the extrusion portion (14) is arranged to abut against the side wedge ring (12).

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