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Wedge-shaped pressure expansion type pipeline plugging device

A technology for plugging devices and pipelines, which is applied in the direction of cable entry sealing devices, pipes, pipes/pipe joints/pipe fittings, etc. It can solve the problems of low sealing degree, complicated installation process, poor durability, etc., and achieves strong plugging pressure bearing capacity , clear working principle and good durability

Pending Publication Date: 2020-11-27
应哲昕 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Plastic mud plugging: plugging performance is greatly affected by the installation process, low mechanical strength, easy to deform and fail, poor durability, low service life, non-reusable, not environmentally friendly
[0004] Inflatable bag sealing: special inflatable equipment is required for installation, low mechanical strength is easy to damage and fail, sealing performance is realized by squeezing the gap with gas pressure, low sealing degree is poor sealing effect, installation quality is difficult to control, poor durability and low service life
[0005] Extruded double "U"-shaped rubber ring device for sealing: the structure of the device is complex, the mechanical strength is low, and it is easy to damage and fail. The sealing performance is realized by the extrusion gap of the "U"-shaped rubber ring. The sealing degree is low, the sealing effect is poor, and the durability is poor. low life
[0006] Laminated rubber ring plugging: the device structure is complex, the extrusion stroke of the sealing ring is small, the installation process is complicated, the quality is difficult to control, and the cost is high

Method used

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  • Wedge-shaped pressure expansion type pipeline plugging device
  • Wedge-shaped pressure expansion type pipeline plugging device
  • Wedge-shaped pressure expansion type pipeline plugging device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 and figure 2 As shown, a wedge-shaped expansion pipeline sealing device of the present invention includes a sealing device installed in the inner hole 7 of a structure, and a cable or a pipeline 8 passes through the sealing device, and the sealing device includes at least one Outer wedge 1 and at least one inner wedge 2, at least one outer wedge 1 and at least one inner wedge 2 are spliced ​​with each other, and are squeezed toward the middle through the locking connector to generate relative longitudinal displacement, and at the same time generate radial relative The pressure expands, so that the inner wedge and the outer wedge are squeezed and sealed with the perforation 7 and the pipeline 8 respectively. .

[0034] In this embodiment, the inner and outer wedges are divided into two lobes according to the circular geometric center, and the joint surface of the dividing line is a shape such as a rectangle or a trapezoid that meshes with each other. ...

Embodiment 2

[0044] This implementation is as image 3 As shown, the outer wedge of the device can be designed into a square according to the shape of the perforation, and the outer wedge of the square structure is divided into four petals according to the vertical and horizontal geometric centers in the circular direction, and other designs are the same.

[0045] For plugging with high sealing requirements and high pressure, the "back-to-back" series type can be used, which can double the plugging performance and pressure bearing capacity, and the working principle is the same.

[0046] In the present invention, by tightening the connecting screws and nuts, the front and rear side connecting pieces generate uniform extrusion force inward and act on the inner and outer wedges at the same time, and the two layers of wedges produce inward longitudinal displacement. The action of the inner and outer wedges produces radial relative radial slip at the same time, that is, the outer wedge expands...

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Abstract

The invention discloses a wedge-shaped pressure expansion type pipeline plugging device. The wedge-shaped pressure expansion type pipeline plugging device comprises a plugging device body installed between a through hole (7) of a structure or a protection pipe and a pipeline (8). The plugging device body comprises at least one outer wedge block (1) and at least one inner wedge block (2). At leastone outer wedge block (1) and at least one inner wedge block (2) are spliced and extruded towards the middle through locking connecting pieces to generate opposite longitudinal displacement and radialopposite pressure expansion at the same time, and the outer wedge blocks and the inner wedge blocks are extruded and sealed with the through hole (7) and the pipeline (8) respectively. The wedge-shaped pressure expansion type pipeline plugging device is simple in structure, convenient to install and clear in working principle. All the components are of solid structures, the mechanical strength ishigh, the durability is good, the plugging pressure bearing capacity is high, the performance is reliable, the pressure expansion stroke is large, and the universality is high.

Description

technical field [0001] The invention relates to a plugging device, in particular to a wedge-shaped expansion type pipeline plugging device. Background technique [0002] At present, cables and pipes pass through the perforation of structures or protective pipes, and the common methods of water blocking and fireproof sealing include plastic mud plugging, inflatable bag sealing, extrusion double "U" rubber ring device sealing, lamination Rubber ring plugging etc., although they have their own advantages, there are still many deficiencies. [0003] Plastic mud plugging: The plugging performance is greatly affected by the installation process, the mechanical strength is low, it is easy to deform and fail, the durability is poor, the service life is low, it cannot be reused, and it is not environmentally friendly. [0004] Inflatable bag sealing: special inflatable equipment is required for installation, low mechanical strength is easy to damage and fail, sealing performance is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L5/10F16L5/02F16L5/00H02G15/013H02G3/04
CPCF16L5/10F16L5/02F16L5/00H02G15/013H02G3/0418H02G3/0462
Inventor 应哲昕姚秦生任艳庄志娟
Owner 应哲昕
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