基于磁记忆技术的油气管道缺陷检测研究
Study on Defect Inspection of Oil-gas Pipelines Based on Metal Magnetic Memory Technique
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- DOI:
- 作者:
- 罗顺友1, 王鼎2, 周晓莹3, 杨毅3
LUO Shun-you1, WANG Ding2, ZHOU Xiao-ying3
- 作者单位:
- 1.中国石油天然气管道局第三工程分公司, 河南郑州451450;
2.中国石油天然气管道局国内事业部,河北廊坊 065000;
3.中国石油北京油气调控中心, 北京 100010
Third Engineering Branch of China Petroleum Pipeline Co., Zhengzhou 451450, China
- 关键词:
- 油气管道;缺陷检测;金属磁记忆;无损检测
oil-gas pipelines;defect inspection;metal magnetic memory;nondestructive testing
- 摘要:
- 采用金属磁记忆方法对管道缺陷进行精确测定,是当前无损检测领域的研究热点和难点。文章介绍了磁记忆检测的优势和原理,分析了采用磁记忆仪检测油气管道缺陷的结果,并对磁记忆检测的影响因素进行了研究。检测试验结果表明,磁记忆检测仪能比较准确地定位管道缺陷;提离对金属磁记忆检测的影响比较明显,随着提离值的增加,磁场信号越来越弱;扫描速度对检测信号影响较小;不同的检测姿态对磁记忆检测信号特征值的影响效应存在较大差异,这对磁记忆检测信号特征量的提取极为不利,建议开发三维探头进行检测。
Applying the metal magnetic memory （MMM） method to accurately inspect pipeline defects is a hotspot and a difficult point in current nondestructive testing research.In this paper,the dominance and principle of MMM inspection method is introduced,the inspection data of oil-gas pipeline defects obtained from the MMM instrument and the factors affecting MMM inspection are analyzed.The experimental results show that the MMM instrument can locate pipeline defects with better accuracy;probe lift-off has an evident effect on MMM inspection and the magnetic field signals become weaker with the increase of probe lift-off;scanning speed has less effect on inspection signals;bigger discrepancy exists among eigenvalues of MMM inspection signals from probe at different poses which affects the pick-up of eigenvalues of MMM inspection signals.It is suggested that the 3D probe should be developed for better MMM inspection.2012,05(05): 51-54 收稿日期：2011-8-29分类号：TE973.6作者简介：罗顺友（1974-），男，河南郑州人，工程师，1998年毕业于西南石油学院，主要从事石油地面工程施工及管理工作。参考文献：
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