Evaluation method for effect of repairing pipeline through epoxy steel sleeve

Abstract

The invention discloses an evaluation method for the effect of repairing a pipeline through an epoxy steel sleeve. The evaluation method comprises the following steps that 1, according to three partsof repair design parameters, repair materials and construction quality, the detection content is determined, wherein the repair materials comprise two parts of sleeve material performance and resin filling material performance; 2, all detection items in the step 1 are detected one by one, wherein detection is divided into non-destructive detection, destructive detection and detection in the construction process; and 3, after the detection items in the step 2 are detected, the detection result is evaluated, if the evaluated result of all the items is qualified, the repairing effect of the epoxysteel sleeve is qualified, otherwise, the repairing effect of the epoxy steel sleeve is unqualified. The problem of how to detect effectiveness and reliability of a product when a pipeline manager applies the epoxy steel sleeve to repair the pipeline is solved, and effectiveness and reliability for repairing in-service pipelines containing defects are ensured.

Description

technical field [0001] The invention belongs to the field of pipeline repair and relates to a method for evaluating the effect of pipeline repair by using an epoxy steel sleeve. Background technique [0002] Epoxy steel sleeve repair technology is a pipeline repair technology invented and first used by British Gas in the 1970s. It is mainly used for defect repair of oil and gas pipelines. This technology is an improved product developed on the basis of the A-type sleeve. There is usually a certain gap between the outer steel sleeve and the steel pipe surface, and then the gap is filled with high-strength epoxy resin material. After the filling material is cured, it is connected with the outer sleeve The joint action transmits stress and plays the role of defect reinforcement and repair. The epoxy steel sleeve repair technology has been favored by pipeline managers in recent years because it does not need to stop the transmission and directly fire on the pipe wall, so there ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, provide a method for evaluating the effect of repairing pipelines using epoxy steel sleeves, and solve the problem of how to detect the effectiveness of the product when pipeline managers use epoxy steel sleeves to repair pipelines. To ensure the effectiveness and reliability of repairing in-service pipelines with defects

Images