Lossless welding process for repairing ground internal coating anticorrosion pipeline

A welding process and inner coating technology, applied in the field of non-destructive welding process, can solve the problems of poor anti-corrosion effect of pipelines, and achieve the effect of avoiding the decline of anti-corrosion performance

Pending Publication Date: 2021-12-24
BEIJING SINOPERM TECH
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a non-destructive welding process for the repair of the inner coating anti-corrosion pipeline on the ground, which is used to solve the defect of poor anti-corrosion effect of the pipeline in the prior art when the coating pipeline is repaired

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
  • Lossless welding process for repairing ground internal coating anticorrosion pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0018] The features of the terms "first" and "second" in the description and claims of the present invention may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0019] Combine below figure 1 The non-destructive welding process of the present invention for the repair of a...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
lengthaaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to the technical field of coating pipeline repair, and provides a lossless welding process for repairing a ground internal coating anticorrosion pipeline, the lossless welding process comprises the following steps that a coating at the joint of a first target pipeline and a second target pipeline is cleaned to form a coating to-be-repaired area; the first target pipeline is sleeved with a first pipe hoop, the second target pipeline is sleeved with a second pipe hoop, and angle welding connection is conducted on the first pipe hoop and the second pipe hoop; the first target pipeline and the second target pipeline are cooled, the coating to-be-repaired area is coated with an anticorrosion coating, and the first target pipeline and the second target pipeline are in sealed butt joint; and butt welding is conducted on the first pipe hoop and the second pipe hoop. According to the lossless welding process for repairing the ground internal coating anticorrosion pipeline, the coating in the pipeline is cleaned up before the pipe hoops are welded, and the inner wall of the pipeline is coated with the anticorrosion coating again after the pipe hoops are welded, so that the situation that the anticorrosion performance of the pipeline is reduced due to high temperature in the welding process is avoided.

Description

technical field [0001] The invention relates to the technical field of coating pipeline repair, in particular to a non-destructive welding process for repairing anti-corrosion pipelines with inner coating on the ground. Background technique [0002] During the use of oil and gas transmission pipelines, the pipeline leaks due to corrosion and other reasons, and the pipeline needs to be repaired. The existing repair method usually adopts cutting off the original leaking pipeline and using a new pipeline for filling welding. However, the butt welding of the pipeline During the process, due to the high temperature, the anti-corrosion coating on the inner wall of the pipeline is likely to fall off, which reduces the anti-corrosion effect of the repaired oil and gas transmission pipeline. Contents of the invention [0003] The invention provides a non-destructive welding process for repairing anti-corrosion pipelines with internal coatings on the ground, which is used to solve t...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/32B23K101/06
CPCB23K9/16B23K9/32B23K2101/06
Inventor 倪广元葛寅山黄兆明
Owner BEIJING SINOPERM TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap