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A pipeline repair method with anti-collapse function

A pipeline repair and functional technology, applied in the direction of pipe components, pipes/pipe joints/fittings, mechanical equipment, etc., can solve problems such as easy collapse, flexible repair hose collapse, hose not resistant to negative pressure, etc., to achieve reliable anti-collapse effect

Active Publication Date: 2021-08-24
ZHONG YU HOSES TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the flatness of the flexible hose, the hose is not resistant to negative pressure during actual use (for example, the pump in the pipeline stops, while the end is still draining, which is easy to form negative pressure), and it is easy to collapse (when the original pipeline has seepage When there is a leak, the flexible repair hose is easily partially collapsed by external pressure)

Method used

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  • A pipeline repair method with anti-collapse function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: A pipeline repair method with anti-collapse function, comprising the following steps:

[0024] S1. Cover the outer surface of the flexible hose 100 with a first adhesive layer 5;

[0025] S2, winding a layer of film tape 7 with hot-melt properties on the outer surface of the flexible hose 100, the inner surface of the film tape 7 is coated with the second adhesive layer 6 and fibers for providing connection strength;

[0026] S3, pulling the flexible hose 100 wrapped with the film tape 7 into the original pipeline 200;

[0027] S4. Pass a pressurized heat source into the flexible hose 100, the pressurized heat source melts the film tape 7, and makes the first adhesive adhesive layer 5 and the second adhesive adhesive layer 6 compound to form a composite adhesive adhesive layer. The adhesive layer bonds the outer wall of the flexible hose 100 and the inner wall of the original pipeline 200 together, thereby completing the pipeline repair.

[0028] Wherein...

Embodiment 2

[0032] Embodiment 2: A pipeline repair method with an anti-collapse function. The difference from Embodiment 1 is that the epoxy resin A material is composed of the following raw materials in parts by weight: 90 parts of epoxy resin, 16 parts Aluminum oxide filler, 12 parts of polyethylene glycol, 10 parts of polycarboxylic anhydride, 40 parts of curing agent, 0.8 parts of defoaming agent, 0.5 parts of coupling agent, and 4 parts of toughening agent.

[0033] The epoxy resin B material is composed of the following raw materials in parts by weight: 120 parts of epoxy resin, 25 parts of alumina filler, 55 parts of curing agent, 0.8 part of defoamer, 0.5 part of coupling agent , 4 parts of toughening agent. After testing, the composite adhesive layer formed by the composite hardening of the first adhesive adhesive layer 5 and the second adhesive adhesive layer 6 has a water absorption rate of less than 0.1 and a compressive strength of 3.9Kg / mm at 24 hours 2 , the impact strengt...

Embodiment 3

[0034] Embodiment 3: A pipeline repair method with anti-collapse function, the difference from Embodiment 1 is that the epoxy resin A material is composed of the following raw materials in specific weight ratios: 85 parts of epoxy resin, 15 parts 10 parts of alumina filler, 10 parts of polyethylene glycol, 7 parts of polycarboxylic anhydride, 35 parts of curing agent, 0.7 parts of defoaming agent, 0.3 parts of coupling agent, and 3 parts of toughening agent.

[0035] The epoxy resin B material is composed of the following raw materials in specific weight ratios: 115 parts of epoxy resin, 23 parts of alumina filler, 53 parts of curing agent, 0.7 part of defoamer, 0.3 part of coupling agent, 3 parts of toughening agent. After testing, the composite adhesive layer formed by composite hardening of the first adhesive adhesive layer 5 and the second adhesive adhesive layer 6 has a water absorption rate of less than 0.1 and a compressive strength of 3.7Kg / mm in 24 hours 2 , the impa...

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Abstract

The invention discloses a pipeline repair method with anti-collapse function, comprising the following steps: S1, coating a first adhesive layer on the outer surface of a flexible hose; S2, winding the outer surface of the flexible hose A layer of film tape with hot-melt properties, the inner side of the film tape is coated with a second adhesive layer and fibers for providing connection strength; S3, pulling the flexible hose wrapped with the film tape into the original pipeline ; S4. Passing a pressurized heat source into the flexible hose, the pressurized heat source melts the film strip, and makes the first adhesive adhesive layer and the second adhesive adhesive layer compound to form a composite adhesive adhesive layer, and the composite adhesive adhesive layer The outer wall of the flexible hose is bonded to the inner wall of the original pipe to complete the pipe repair. After the pipeline is repaired by the method of the present invention, the internal flexible hose has a good anti-collapse ability; it can repair small holes on the original pipeline to a certain extent; the composite adhesive layer has a certain ring rigidity for offsetting negative pressure .

Description

technical field [0001] The invention relates to the technical field of pipeline repair, in particular to a pipeline repair method with an anti-collapse function. Background technique [0002] At present, pipelines have become an indispensable infrastructure in people's lives, such as water transmission, gas transmission, drainage, exhaust, etc. Pipeline corrosion, breakage, damage, etc. due to natural conditions and human factors need to be repaired in time. [0003] In the prior art, the usual pipeline repair method is to insert a flexible repair hose inside the original pipeline. The hose usually has a three-layer structure, an outer rubber layer, a braided layer, and an inner rubber layer. The braided layer of the flexible composite hose is generally made of non-metallic fibers, and the inner and outer adhesive layers can be made of different non-metallic materials according to different applications, such as PU, PE, etc. Flexible hoses generally have the characteristic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/165C09J163/00C09J11/04C09J11/08C08K3/22
CPCC08K2003/2227C09J11/04C09J11/08C09J163/00F16L55/1652F16L55/1656C08L71/02C08K3/22
Inventor 黄裕中卞冬明王金马张小红申华
Owner ZHONG YU HOSES TECH CO LTD
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