Overhead pipe wall thickness corrosion scanning and detecting system

Abstract

The invention provides an overhead pipe wall thickness corrosion scanning and detecting system which comprises a transmission clamp, a receiving clamp, a distance controller and an operation box. The transmission clamp is connected with the receiving clamp through the distance controller, the distance between the transmission clamp and the receiving clamp is controlled by the distance controller, the operation box is connected to the transmission clamp and the receiving clamp, current signals are transmitted to the transmission clamp, induced current signals generated by the receiving clamp are collected, changes of the induced current signals are analyzed to reflect pipe body defects of an overhead pipe, the transmission clamp and the receiving clamp are composed of solenoids respectively, the curvature radii of the two semi-circular solenoids are same, and the solenoids are filled with ferromagnetic media. By means of the overhead pipe wall thickness corrosion scanning and detecting system, overall scanning and detecting on the overhead pipe can be achieved, interference of outer coatings of the overhead pipe is avoided, and rapid quantification and rapid positioning on corrosion defects of the overhead pipe are achieved.

Description

technical field [0001] The invention relates to a detection device for overhead metal pipelines, in particular to a scanning detection system for wall thickness corrosion of overhead pipelines. Background technique [0002] At present, the remaining wall thickness of overhead pipelines in China is mainly detected by ultrasonic spot checks. The selection of testing points is usually determined by the inspectors according to the site conditions. However, there is often no necessary relationship between the corrosion of the inner and outer walls of the pipeline. The thickness measurement method cannot truly reflect the real remaining wall thickness of the pipeline, which is likely to cause missed detection of defects; for pipelines with an overcoat, the ultrasonic thickness measurement method needs to remove the overcoat of the pipeline before implementation, which brings additional costs to the user. economic burden. [0003] In foreign countries, a lot of research has been c...

AI Technical Summary

Problems solved by technology

However, the related equipment of these technologies is expensive, and requires a high level of operation of the testing personnel, which is not suitable for large-scale promotion and application.

Images