Metal pipe protection reinforcing system

A metal pipeline and reinforcement technology, applied in pipeline protection, pipeline anti-corrosion/rust protection, damage protection, etc., can solve the problems of increasing maintenance times, corrosion, scaling, perforation, and damage to the anti-corrosion layer, etc., to prolong the service life , good protective effect, the effect of preventing brittle fracture

Inactive Publication Date: 2011-03-30
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the use of metal pipes, due to the influence of various factors such as water quality, geology, and liquid media, after a certain period of use, severe corrosion, scaling, and perforation will appear on the surface of the metal pipes, resulting in leakage of liquid media and increasing the number of maintenance. Not only It affects the normal production, there are safety hazards, and it will shorten the service life of metal pipes, so we must consider anti-corrosion treatment of metal pipes
[0003] At present, there are many ways for metal pipeline anticorrosion, such as "New Materials Applied in Pipeline Anticorrosion" written by Niu Liming, which was published on INTENETER. The anti-corrosion layer is wound on the outside of the steel pipe by heating to form an anti-corrosion layer. The anti-corrosion layer of this anti-corrosion structure is easy to age and peel off after being heated; On the surface of the pre-treated pipe, a continuous hard plastic shell tightly bonded to the pipe wall is formed, commonly known as a jacket, which is prone to cracking of the jacket when it is applied to large-diameter pipes; if epoxy coal tar pitch is used for corrosion protection, the The anti-corrosion layer is a thin coating with a total thickness of less than 1mm. It is easy to be knocked and damaged during transportation and construction, and this process has high requirements on steel pipe surface treatment, ambient temperature, humidity and other conditions, and pinholes will occur if there is a slight negligence , affect the anti-corrosion effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The surface of the metal pipe has been derusted to meet the requirements of SSPC-SC-10FINISH. The resin aggregate containing epoxy resin, 50nm diameter talc powder filler and curing agent is heated to 140°C and fully stirred evenly to make it into a molten state The resin aggregate, and the mass per unit area is 83g / m 2 The PPS paper is fully soaked in the above resin aggregate, and finally the PPS paper impregnated with the resin aggregate is wrapped on the outer surface of the metal pipe, and cured for 50 minutes under a pressure of 0.2MPa to form a metal pipe reinforcement system. The breaking strength is 9.2KV / mm.

Embodiment 2

[0027] The surface of the metal pipe has been derusted to meet the requirements of SSPC-SC-10FINISH, and will contain epoxy resin and SiO with a diameter of 10nm 2 The resin aggregate of powder filler and curing agent is heated to 160°C and fully stirred evenly to make it a molten resin aggregate, and then the mass per unit area is 30g / m 2 The PPS paper is fully soaked in the above resin aggregate, and finally the PPS paper impregnated with the resin aggregate is wrapped on the outer surface of the metal pipe, and cured for 40 minutes under a pressure of 0.35MPa to form a metal pipe reinforcement system. The breaking strength is 5.2KV / mm.

Embodiment 3

[0029] The surface of the metal pipe is derusted and meets the requirements of SSPC-SC-10FINISH. The resin aggregate containing epoxy resin, talc powder filler with a diameter of 100nm and curing agent is heated to 170°C and fully stirred evenly to make it into a molten state The resin aggregate, and then the mass per unit area made of aramid fiber and fluorine-containing fiber is 350g / m 2 The felt is fully infiltrated in the above resin aggregate, and finally the felt impregnated with the resin aggregate is covered on the outer surface of the metal pipe, and cured for 90 minutes under a pressure of 0.1MPa to form a metal pipe reinforcement system. It is 2.0KV / mm.

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PUM

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Abstract

The invention discloses a metal pipe protection reinforcing system which covers the surfaces of both a metal pipeline tubular product and a connecting part and contains a fiber assembly with excellent steaming resistance and a resin assembly. The fiber assembly with excellent steaming resistance is preferably selected from a polyphenylene sulfide fibre assembly. The metal pipe protection reinforcing system has the characteristics of acid and alkali corrosion resistance, good steaming resistance, and the like, is convenient for construction, prolongs the service life of the metal pipe, and has better repair function on a corroded protective layer.

Description

technical field [0001] The invention relates to a metal pipeline protection and reinforcement system. Background technique [0002] During the use of metal pipes, due to the influence of various factors such as water quality, geology, and liquid media, after a certain period of use, severe corrosion, scaling, and perforation will appear on the surface of the metal pipes, resulting in leakage of liquid media and increasing the number of maintenance. Not only It will affect the normal production, there are potential safety hazards, and it will shorten the service life of metal pipes, so we must consider anti-corrosion treatment for metal pipes. [0003] At present, there are many ways for metal pipeline anticorrosion, such as "New Materials Applied in Pipeline Anticorrosion" written by Niu Liming, which was published on INTENETER. The anti-corrosion layer is wound on the outside of the steel pipe by heating to form an anti-corrosion layer. The anti-corrosion layer of this ant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L58/04
Inventor 刘晶山本英行
Owner TORAY FIBER RES INST(CHINA) CO LTD
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