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Rubber-lined pipeline, vulcanization process thereof and application of rubber-lined pipeline in nuclear power station

A technology of vulcanized rubber and nuclear power plants, applied in applications, other household appliances, tubular objects, etc., can solve the problems of low adhesion, high defects, and poor stability of rubber linings, and achieve uniform thickness, low defects, and rubber linings full effect

Pending Publication Date: 2022-05-10
LINGAO NUCLEAR POWER +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a rubber-lined pipeline and its vulcanization process, as well as the application of a rubber-lined pipeline in nuclear power plants, aiming to solve the problem of poor rubber-lined rubber stability, high defects, and poor adhesion of existing rubber-lined pipelines to a certain extent. low degree problem

Method used

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  • Rubber-lined pipeline, vulcanization process thereof and application of rubber-lined pipeline in nuclear power station
  • Rubber-lined pipeline, vulcanization process thereof and application of rubber-lined pipeline in nuclear power station
  • Rubber-lined pipeline, vulcanization process thereof and application of rubber-lined pipeline in nuclear power station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] A rubber-lined pipeline, the vulcanization process of which comprises the steps of:

[0090] ① Sandblasting the inner side and end surface of the carbon steel pipe 1 to remove the oxide layer and rust layer on the surface of the carbon steel; cleaning the sandblasting surface with gasoline to remove dust and oil stains to obtain a clean carbon steel pipe 1;

[0091] ② Coat the inner wall of the carbon steel pipe 1 with adhesive, first coat the primer with Kemlok 607 adhesive, and coat it twice, and after the solvent evaporates and dry, apply the surface with Kemlok 238 adhesive, and coat it twice; form the adhesive layer 2 ;

[0092] ③The formula is: 100 parts of EPDM rubber, 3.5 parts of zinc oxide, 15 parts of N550, 10 parts of gas carbon black, 3 parts of anti-4020, 2 parts of anti-MB, 1.5 parts of anti-D, 0.2 parts of anti-scorch CTP, 3 parts of double 25, 0.5 part of triallyl cyanurate TAC, 0.1 part of p-benzoquinone dioxime GMF, 18 parts of magnesium carbonate, 2...

Embodiment 2

[0096] A rubber-lined pipeline, the difference between its vulcanization process and that of Example 1 is that the phase change material in step ④ is ammonium bicarbonate, the filling amount is 577g, and 1000g of pre-dried clay and other non-decomposable substances are used as diluents , and use after mixing and stirring evenly.

[0097] In step ⑤: stepwise heating: raise the temperature to 30°C and keep for 1h; raise the temperature to 40°C and keep for 1h; raise the temperature to 50°C and keep for 30min; raise the temperature to 60°C and keep for 30min; raise the temperature to 150°C.

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Abstract

The invention belongs to the technical field of nuclear power station corrosion prevention, and particularly relates to a rubber-lined pipeline, a vulcanization process thereof and application of the rubber-lined pipeline in a nuclear power station. The vulcanization process of the rubber-lined pipeline comprises the following steps: obtaining a clean pipeline, attaching a rubber sheet to the inner wall of the pipeline, and forming a to-be-vulcanized rubber layer on the inner wall of the pipeline; applying vulcanization pressure from inside to outside in the radial direction of the pipeline to the to-be-vulcanized rubber layer, and performing heating vulcanization treatment to obtain the rubber lining pipeline. According to the vulcanization process of the rubber lining pipeline, the rubber lining pipeline which is tightly and firmly combined can be manufactured through one-time pressurization vulcanization treatment, the vulcanization process is simplified, the bonding strength of the rubber lining layer and the inner wall of the pipeline is improved, the bonding stability of the rubber lining layer is improved, and hidden dangers such as insufficient bonding strength and uneven thickness of the rubber lining layer are eliminated.

Description

technical field [0001] The application belongs to the technical field of nuclear power plant anticorrosion, and in particular relates to a rubber-lined pipeline and its vulcanization process, as well as the application of a rubber-lined pipeline in nuclear power plants. Background technique [0002] The operating medium of the cold source (SEC) system pipeline of the nuclear island equipment of the nuclear power plant is seawater. Since seawater is highly corrosive to carbon steel materials, an anti-corrosion isolation layer must be used to prevent the inner wall of carbon steel pipelines from directly contacting seawater. At present, most carbon steel pipelines use rubber as the anti-corrosion lining material. Seawater rubber-lined pipelines are widely used in seawater circulation systems of nuclear power plants, and rubber-lined pipelines are used as the main anti-corrosion protection layer of carbon steel pipelines. Since rubber and carbon steel are not of the same mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C63/34B29C35/02B29L23/00
CPCB29C63/341B29C35/02B29L2023/22B29C2035/0211
Inventor 严海德陈军琦徐万年苏有学孙超超
Owner LINGAO NUCLEAR POWER
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