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Pipeline connector repair device and method

A pipeline interface and pipeline technology, which is applied in the direction of pipes/pipe joints/fittings, pipe components, mechanical equipment, etc., can solve problems such as poor sealing performance, pipeline collapse, and construction hazards, and achieve improved ring stiffness, good sealing, and construction. easy effect

Active Publication Date: 2014-07-02
CHENGTONG KAISHENG ECOLOGICAL CONSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the slurry injected between the tubular liner and the main pipe may have a tendency to slide over the tubular liner and flow under the tubular liner, thereby inhibiting the formation of ideal slurry in the uppermost region between the tubular liner and the pipe cover
In addition, as the grout is distributed between the liner and the pipe, entrained or entrained air due to lack of sufficient back pressure can lead to defects or gaps in the grout coverage, which are relatively poorly sealed
In addition, the currently used tubular lining is mainly made of ordinary carbon steel collar or PVC collar, and the design of the pipeline must ensure that the external load is less than or equal to the bending pressure that the pipeline itself can bear, otherwise the pipeline will collapse. General engineering practice Both require the safety factor of the flexible lining to be 2.25 times the existing load, so as to ensure that the pipeline can occasionally experience double the pressure of the existing load during the service life; but whether it is an ordinary carbon steel ring or a PVC sleeve Rings, none of which can meet the required conditions, and ordinary carbon steel collars or PVC collars, their corrosion resistance is poor, so the service life of the repaired pipe joints is short, generally only a few years
[0003] Due to the dangerous construction and high maintenance cost, it is necessary to study a pipeline joint repair method that can ensure the service life, sealing performance and compression resistance of the repaired pipeline joint, and is easy to operate

Method used

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  • Pipeline connector repair device and method
  • Pipeline connector repair device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Repair devices for repairing pipe joints such as Figure 1 to Figure 2 As shown, including the reel 5 whose outer diameter size matches the inner diameter size of the pipeline 7, in this embodiment, the reel 5 is a rubber reel, and the performance of the rubber reel absorbing the foaming agent layer is better, which can prevent foaming The agent layer is separated from the roll 5 or prevents the foaming agent layer from flowing from the upper area of ​​the roll 5 to the lower area of ​​the roll 5 . The outer diameter of the reel 5 is smaller than the inner diameter of the pipe 7 .

[0035] Both the first positioning latch 3 and the second positioning latch 4 are one-way latches, and they can only move in one direction after meshing.

[0036] The length of the reel 5 is between 60cm and 80cm, the outer surface of the reel 5 is provided with a foaming agent layer, the thickness of the foaming agent layer is between 0.1-0.2cm, and the foaming agent layer is a water-solubl...

Embodiment 2

[0039] The method for repairing the pipeline interface includes the following steps:

[0040] Step 1: Preparation of the repair device: Put stainless steel buckle 1 on the inner circumference of the rubber reel. The outer diameter of the rubber reel is slightly smaller than the inner diameter of the pipe 7. For example, the inner diameter of the pipe 7 is 600mm, The outer diameter is set to be slightly smaller than 600mm, for example, 580mm or 590mm or 570mm is selected. The stainless steel ring buckle 1 is formed by coiling a stainless steel strip whose length is greater than the inner diameter of the pipe 7. The left and right parts of the stainless steel strip are respectively provided with a first positioning latch 3 and a second positioning latch 4. The stainless steel strip is coiled to form an opening. 2 stainless steel ring buckle 1, and the first positioning latch 3 and the second positioning latch 4 are staggeredly engaged, and the meshing of the first positioning la...

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Abstract

The invention relates to the field of construction connection of pipeline projects, and discloses a pipeline connector repair device. The pipeline connector repair device comprises a winding drum, a stainless steel buckle and an air bag, wherein the stainless steel buckle is arranged on the inner side of the winding drum, the air bag is arranged in the winding drum, a foaming agent layer is arranged on the outer surface of the winding drum, an opening is formed in the stainless steel buckle, first locating clamping teeth are arranged at one end of the opening, and second locating clamping teeth meshed with the first locating clamping teeth are arranged at the other end of the opening. The invention further discloses a pipeline connector repair method using the pipeline connector repair device. According to the pipeline connector repair device, the lateral support pressure of the stainless steel buckle is 5 psi, and the safety coefficient of external static waterpower pressure ranges from 2.5 to 3.0; the stainless steel buckle is made of austenitic stainless steel, a water-soluble polyurethane plugging agent layer or an oil-soluble polyurethane plugging agent layer is adopted as the foaming agent layer, and it is ensured that the normal service life of the repair portion of a pipeline can be longer than 15 years generally; after a pipe section with slight damage is repaired, the service life of the repaired pipe section can be equal to that of a new pipe.

Description

technical field [0001] The invention relates to the construction and connection field of pipeline engineering, in particular to a repairing device and a repairing method for repairing pipeline joints. Background technique [0002] The connection of the pipe interface is a device to connect the pipe sections and ensure the sealing. During the use of the pipeline, both the pipeline and its joints are often subject to corrosion and / or micro-cracks and / or leaks, and the pipeline must often be replaced or repaired. In order to save resources, the above-mentioned problems are generally solved by means of restoration. For the way of pipeline interface repair, a tubular lining is installed inside the main pipeline, wherein a hardenable cement mortar (formed by slurry) is provided between the tubular lining and the main pipeline. However, the slurry injected between the tubular liner and the main pipe may have a tendency to slide over the tubular liner and flow under the tubular li...

Claims

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Application Information

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IPC IPC(8): F16L55/162
CPCF16L55/1654
Inventor 马正超郭水林李晓霞林作贤林金桃叶仙珍
Owner CHENGTONG KAISHENG ECOLOGICAL CONSTR CO LTD
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