Novel underwater pipeline leakage rapid repair construction method

An underwater pipeline and construction method technology, applied in the direction of pipe elements, pipes/pipe joints/pipes, mechanical equipment, etc., can solve the problems of marine environment pollution, underwater pipeline leakage, caisson pipe perforation leakage, etc., and improve curing toughness. , The effect of promoting interfacial wetting and high bonding performance

Active Publication Date: 2020-09-08
杭州每步材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The leakage of underwater pipelines will not only cause waste, but also cause environmental pollution
Take the caisson pipe of an offshore oil platform as an example. The caisson pipe will be corroded by seawater and perforated to leak, thus polluting the marine environment.
If the leaking part is above the water, it can be repaired with ordinary repairing materials, but there is still no effective repairing method for the pipeline under the water, and generally only temporary methods are used, such as wrapping and covering, which can only slow down the leakage , does not solve the leakage problem
A rapid underwater leak repair technology is needed to solve the leakage problem of underwater pipelines and at the same time solve the safety hazard caused by the thinning of the pipe wall

Method used

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  • Novel underwater pipeline leakage rapid repair construction method
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preparation example Construction

[0040] The preparation method of the polyurethane prepolymer is as follows: slowly add diisocyanate with -NCO / -OH molar ratio of 2.2 to the dehydrated and dried castor oil while stirring, control the reaction temperature at 60-70°C, stir for 1 hour, and cool to prepare Obtain polyurethane prepolymer.

[0041] Polymer resin concrete is a concrete made of organic polymer materials and cement as a cementitious material. Usually, a certain amount of organic high molecular polymer is added while mixing the concrete, the hydration of the cement and the curing of the polymer are carried out at the same time, and they are filled with each other to form an overall structure, but there is no chemical reaction between the polymer and the cement. Compared with ordinary concrete, physical cement concrete has the characteristics of high tensile and flexural strength, fast curing, ductility, cohesiveness, impermeability, impact resistance and abrasion resistance.

[0042] Polymer resin conc...

Embodiment 1

[0055] A novel rapid repair construction method for underwater pipeline leakage, comprising the following steps:

[0056] (1) Leakage site location and base cleaning

[0057] After identifying the leaking part, use a high-pressure water gun to clean the leaking part and the surrounding area as a whole, remove surface debris, and clean the base of a certain area at the bottom of the leaking part of the pipeline;

[0058] (2) Sheath installation

[0059] Install a U-shaped steel sheath in the area where the pipeline is to be poured. The top of the U-shaped steel sheath is provided with side panels, and the top is provided with a cover plate. After the installation is completed, the underwater pipeline and the U-shaped steel sheath A large number of rocks are thrown under the sleeve to make the underwater pipeline and U-shaped steel sheath in a stable and fixed state;

[0060] (3) Concrete mixing

[0061] According to the ratio, add the polymer resin matrix that has been stirr...

Embodiment 2

[0070] A novel rapid repair construction method for underwater pipeline leakage, comprising the following steps:

[0071] (1) Leakage site location and base cleaning

[0072] After identifying the leaking part, use a high-pressure water gun to clean the leaking part and the surrounding area as a whole, remove surface debris, and clean the base of a certain area at the bottom of the leaking part of the pipeline;

[0073] (2) Sheath installation

[0074] First, the area to be poured on the pipeline is covered with EPDM rubber layer and stainless steel coil layer in sequence, and after the outer circumference is fastened with hoops, a U-shaped steel sheath is installed. The U-shaped steel sheath There are side panels at the front and back of the top, and a cover at the top. After the installation is completed, a large number of rocks are thrown under the underwater pipeline and the U-shaped steel sheath, so that the underwater pipeline and the U-shaped steel sheath are stably fi...

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Abstract

The invention provides a novel underwater pipeline leakage rapid repair construction method. A U-shaped steel sheath is installed in a to-be-poured area of the leakage pipeline, and polymer resin concrete is poured to achieve rapid repair of leakage of the underwater pipeline. The invention also provides a composition ratio of the polymer resin concrete, including 12 to 20 percent of epoxy resin matrix, 7 to 15 percent of cement, 30 to 40 percent of stone, 0.07 to 0.12 percent of accelerant, 0.07 to 0.12 percent of initiator and the balance of sand, and the polymer resin matrix is a composition of epoxy resin, polyurethane prepolymer, unsaturated polyester and substituted ethylene; the polymer resin concrete can promote interface infiltration so as to obtain good wet bonding strength.

Description

technical field [0001] The invention relates to the technical field of underwater pipeline repair, in particular to a novel rapid repair construction method for underwater pipeline leakage. Background technique [0002] The leakage of underwater pipelines will not only cause waste, but also cause environmental pollution. Take the caisson pipe of an offshore oil platform as an example. The caisson pipe will be corroded by seawater and perforated to leak, thereby polluting the marine environment. If the leaking part is above the water, it can be repaired with ordinary repairing materials, but there is still no effective repairing method for the pipeline under the water, and generally only temporary methods are used, such as wrapping and covering, which can only slow down the leakage , does not solve the leakage problem. A rapid underwater leakage repair technology is needed to solve the leakage problem of underwater pipelines and at the same time solve the safety hazards cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B24/12C04B20/10C04B24/28F16L55/175C04B111/72C04B111/70
CPCC04B28/00C04B20/1037C04B40/0039F16L55/175C04B2111/72C04B2111/70C04B14/02C04B14/06C04B24/281C04B24/282C04B24/283C04B24/2676C04B24/129C04B2103/0068C04B24/00
Inventor 陆志华陈丽萍
Owner 杭州每步材料科技有限公司
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