Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Extrusion coating device for internal corrosion prevention of pipeline and coating method thereof

An internal anti-corrosion and pipeline technology, which is applied in the direction of devices and coatings that apply liquid to the surface, can solve the problems of difficult exit, easy deformation and damage under construction pressure, so as to achieve difficult deformation and damage, ensure coating quality, and pass the powerful effect

Active Publication Date: 2014-06-04
PETROCHINA CO LTD
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages of the scraper type extrusion coating machine are mainly poor ability to pass through sharp bends or non-standard elbows, easy to chuck when encountering resistance, difficult to exit, easy to leak coating when the pipe is not round or passes through the elbow, and easy to deform when the construction pressure is high Or damaged, need to coat more times
The disadvantage of the spherical extruder is that it has no spin coating function, and the surface elasticity of the extruder cannot be controlled, resulting in unknown contact pressure with the inner wall of the pipe, and it is difficult to guarantee the thickness and uniformity of the coating

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Extrusion coating device for internal corrosion prevention of pipeline and coating method thereof
  • Extrusion coating device for internal corrosion prevention of pipeline and coating method thereof
  • Extrusion coating device for internal corrosion prevention of pipeline and coating method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The hardness of the wear-resistant elastic rubber layer of the present invention is controlled by its thickness and composition ratio, and the specific weight ratio is as follows:

[0044] 35 parts of natural rubber, 15 parts of butadiene rubber, 10 parts of neoprene rubber, 15 parts of modified kaolin, 13 parts of white carbon black, 2 parts of stearic acid, 5 parts of titanium dioxide, 2 parts of magnesium stearate, antioxidant 4010NA 1.5 parts, 1 part of sulfur, 0.5 parts of accelerator DM.

[0045] The preparation process of the extrusion coating device for anti-corrosion in the pipeline of the present invention is as follows:

[0046] a. According to the above weight ratio, uniformly mix natural rubber, butadiene rubber, and neoprene; adopt the open mill mixing method, the mixing temperature is 50°C, and the roller speed is 16r / min.

[0047]b. After mixing in the open mill for 6 minutes, add them in sequence according to the order of active agent, anti-aging agent...

Embodiment 2

[0052] The raw material ratio of the wear-resistant elastic rubber layer is as follows:

[0053] 30 parts of natural rubber, 13 parts of butadiene rubber, 15 parts of neoprene rubber, 20 parts of nano-zinc oxide, 18 parts of white carbon black, 1.5 parts of stearic acid, 4 parts of white smoke, 3 parts of active agent AKT733 parts, 1 part of anti-aging agent RD , 0.8 parts of sulfur, 0.2 parts of accelerator NS.

[0054] The preparation process of the extrusion coating device for anti-corrosion in the pipeline of the present invention is as follows:

[0055] a. According to the above weight ratio, uniformly mix natural rubber, butadiene rubber, and neoprene; adopt the open mill mixing method, the mixing temperature is 45°C, and the roller speed is 17r / min.

[0056] b. After 7 minutes of mixing in the open mill, add in the order of active agent, anti-aging agent, accelerator, white carbon black, reinforcing agent, stearic acid, and vulcanization active agent, and carry out uni...

Embodiment 3

[0060] The raw material ratio of the wear-resistant elastic rubber layer is as follows:

[0061] 40 parts of natural rubber, 10 parts of butadiene rubber, 13 parts of neoprene, 25 parts of attapulgite ore powder, 10 parts of white carbon black, 1 part of stearic acid, 3 parts of white smoke, 5 parts of magnesium oxide, anti-aging agent BLE 2.5 1 part, 2 parts of sulfur, 1 part of accelerator CZ.

[0062] The preparation process of the extrusion coating device for anti-corrosion in the pipeline of the present invention is as follows:

[0063] a. According to the above weight ratio, uniformly mix natural rubber, butadiene rubber, and neoprene; adopt the open mill mixing method, the mixing temperature is 55°C, and the roller speed is 14r / min.

[0064] b. After mixing in the mill for 5 minutes, add them in sequence according to the order of active agent, anti-aging agent, accelerator, white carbon black, reinforcing agent, stearic acid, and vulcanization active agent, and carry o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an extrusion coating device for internal corrosion prevention of pipelines and a coating method thereof. The extrusion coating device comprises a wear-resistant elastic rubber layer and a hollow ball; the wear-resistant elastic rubber layer is arranged outside the hollow ball; a first ball, a second ball, a third ball and a fourth ball are the fixedly arranged in the hollow ball; the first ball and the second ball have a same weight and are symmetrically arranged in the hollow ball along the axis; and the third ball and the fourth ball have a same weight, and are arranged asymmetrically in the hollow ball. The coating method includes the steps of: first, a front extrusion coating device is sent into the pipeline, and the front extrusion coating device is powered by compressed gas to move forward for a distance; an anticorrosion coating is injected into the pipeline, and a rear extrusion coating device is sent into the pipeline after stop of feeding; and then the rear extrusion coating device, the coating and the front extrusion coating device are driven by the compressed gas to move forward and produce rotation, thus a coating layer with uniform thickness is formed on the inner wall of the pipeline. The invention has the advantages of strong ability, excellent scraping ability, spin coating function, and controllable surface elasticity.

Description

technical field [0001] The invention relates to the technical field of anticorrosion in pipelines, in particular to an extrusion coater for anticorrosion in pipelines and a coating method thereof. Background technique [0002] The medium transported in the buried pipeline of the oil field is corrosive to a certain extent. With the extension of the service life of the pipeline, it will inevitably face corrosion problems in the pipeline, resulting in thinning or perforation of the wall thickness, which will bring hidden dangers to the normal production and safety and environmental protection of the oil field. Pipeline internal extrusion anti-corrosion technology is to coat a layer of anti-corrosion layer on the inner wall of the pipeline to achieve the purpose of isolating corrosive media, enhancing pressure bearing capacity and prolonging service life. This technology is simple in construction, low in cost, and can be repaired online. It is one of the main methods of anticorr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B05C7/04B05C7/08B29B7/72B29C45/00C08L7/00C08L9/00C08L11/00C08K13/02C08K3/36C08K3/06C08K3/34C08K3/22
Inventor 奚运涛曾亚勤杨全安孙雨来朱方辉董晓焕
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com