漏磁管道检测的理论与应用

Theory and Application of Magnetic Flux Leakage Pipeline Detection.

作者信息

Shi Yan, Zhang Chao, Li Rui, Cai Maolin, Jia Guanwei

机构信息

School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China.

PetroChina Pipeline Company, Langfang 065000, China.

出版信息

Sensors (Basel). 2015 Dec 10;15(12):31036-55. doi: 10.3390/s151229845.

DOI:10.3390/s151229845

PMID:26690435

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4721765/

Abstract

Magnetic flux leakage (MFL) detection is one of the most popular methods of pipeline inspection. It is a nondestructive testing technique which uses magnetic sensitive sensors to detect the magnetic leakage field of defects on both the internal and external surfaces of pipelines. This paper introduces the main principles, measurement and processing of MFL data. As the key point of a quantitative analysis of MFL detection, the identification of the leakage magnetic signal is also discussed. In addition, the advantages and disadvantages of different identification methods are analyzed. Then the paper briefly introduces the expert systems used. At the end of this paper, future developments in pipeline MFL detection are predicted.

摘要

漏磁检测是管道检测中最常用的方法之一。它是一种无损检测技术，利用磁敏传感器检测管道内外表面缺陷的漏磁场。本文介绍了漏磁检测的主要原理、数据测量与处理。作为漏磁检测定量分析的关键，还讨论了漏磁信号的识别问题。此外，分析了不同识别方法的优缺点。然后简要介绍了所使用的专家系统。本文最后对管道漏磁检测的未来发展进行了预测。