新型交流电磁场检测探头仿真和测试研究  

Simulation and testing of a novel probe based on alternating current field measurement

作　　者：冯一璟 张来斌[2] 郑文培[2] 刘海涛[1] FENG Yijing;ZHANG Laibin;ZHENG Wenpei;LIU Haitao(Institute of Electrical Engineering of the Chinese Academy of Sciences,Beijing 100190,China;China University of Petroleum(Beijing),Beijing 102249,China)

机构地区：[1]中国科学院电工研究所,北京100190 [2]中国石油大学(北京),北京102249

出　　处：《中国测试》2022年第11期113-119,共7页China Measurement & Test

基　　金：国家自然科学基金资助项目(51404283);国家采油装备工程技术研究中心开放基金资助项目(ZBKJ2021-Z-01)。

摘　　要：交流电磁场无损检测(ACFM)作为一种新兴的无损检测技术,具有较高的检测精度和评估金属缺陷尺寸的能力。该文提出一种基于交流电磁场的管道内检测探头,对该探头进行数值模拟及提离距离参数优化,建立激励线圈和传感器沿缺陷长度方向运动的参数扫掠模型,模拟油气管道内检测探头对缺陷的检测扫描过程,得到磁场沿缺陷长度方向分布的数值解;建立与仿真模型一致的实验条件,进行检测实验,测试探头的检测能力,对检测信号进行了经过EMD降噪处理,评估探头的定量检测性能。该文的研究结果表明该检测探头对管道内表面的轴向缺陷检测效果较好,可为管道缺陷早期缺陷预警及金属结构物长期安全服役提供技术借鉴。Alternating current field measurement(ACFM),as a new non-destructive testing technology,has high inspection accuracy and the ability to assess the size of metal defects.In this paper,an in-line inspection probe based on ACFM is proposed.The probe was numerically simulated and the lift-off distance parameter was optimized.A parametric sweep model of the excitation coil and magnetic sensor moving along the length of the defect was established,and the detection and scanning process of the detection probe in the oil and gas pipeline was simulated to obtain the numerical solution of the distribution of the magnetic field along the length of the defect.The inspection experiment was carried out,the inspection ability of the probe was tested,the detection signal is processed by EMD noise reduction,and the quantitative inspection performance was evaluated.The research results in this paper show that the probe has a good effect on the inspection of axial cracks on the inner surface of the pipeline,and it can also provide technical reference for early warning of pipeline cracks and long-term safe service of metal structures.

关 键 词：ACFM 管道内检测 轴向缺陷 数值模拟 实验测试 

分 类 号：TE988[石油与天然气工程—石油机械设备] TE88[一般工业技术—计量学] TB9[机械工程—测试计量技术及仪器]