管道应力交流电磁场检测系统设计与试验  

Design and experimental research of pipeline stress measurement system based on alternating current field

作　　者：齐光峰[1] 李西彦[1] 唐鑫 袁新安 韩庆[1] 王安泉[1] 李伟[2] 王克宇 QI Guangfeng;LI Xiyan;TANG Xin;YUAN Xin'an;HAN Qing;WANG Anquan;LI Wei;WANG Keyu(Sinopec Shengli Oilfield Co.Ltd.;College of Mechanical and Electrical Engineering,China University of Petroleum(East China))

机构地区：[1]中国石化胜利油田分公司 [2]中国石油大学(华东)机电工程学院

出　　处：《油气储运》2023年第10期1149-1157,共9页Oil & Gas Storage and Transportation

基　　金：山东省自然科学基金项目“海洋油气装备裂纹交流电磁场成像监测与智能识别方法研究”,ZR201911040388。

摘　　要：铁磁性管道易在服役过程中产生应力畸变现象,导致疲劳损伤、裂纹等破坏性缺陷,引发重大安全事故,因此对铁磁性管道的应力畸变现象进行检测尤为重要。基于交流电磁场检测技术,通过有限元软件COMSOL建立管道应力检测的仿真模型,选取表征应力大小的特征信号,探究应力检测探头的最优激励方式,分析管道受不同大小和方向的应力时的信号变化规律。依据仿真结果与管道应力分布的特点,设计开发一套集便携式机箱-检测探头为一体的管道交流电磁场应力检测系统,对45#钢拉伸试件和X70钢管道在0~105 MPa的应力范围内进行试验测试。仿真和试验结果表明:管道的应力畸变会引起电磁场的扰动,所选取的特征信号可反映应力畸变大小;探头最佳激励方向为与应力垂直方向;设计的便携式管道交流电磁场应力检测系统可检测出管道的应力畸变区域。研究成果可为铁磁性管道的应力畸变现象的快速检测提供参考。Ferromagnetic pipelines are prone to stress distortion during service,which will likely cause destructive defects,such as fatigue damage and cracks,and even major safety accidents in severe cases.This makes it particularly important to measure the stress distortion of ferromagnetic pipelines.Herein,a simulation model of pipeline stress measurement was established by the finite element software COMSOL based on the alternating current field stress measurement(ACSM)technology.Then,the characteristic signals were selected to represent the stress,which allowed us to explore the influence of probe excitation direction on stress measurement,find the optimal excitation mode,and analyze the signal variation law of the pipeline subjected to stress in different magnitudes and directions.Based on the simulation results and the characteristics of pipeline stress distribution,a set of ACSM based pipeline stress measurement system integrating the portable case and probe was designed and developed to test the tensile specimen of 45~#steel and X70 steel pipeline within 0-105 MPa.The simulation and test results demonstrate that the selected characteristic signal could reflect the stress distortion because the stress distortion of pipeline causes the disturbance in electromagnetic field.The optimal excitation direction of the probe is perpendicular to the stress,and the designed portable ACSM based pipeline stress measurement system has been verified to be capable of detecting the stress distortion area of the pipeline.The research results are expected to provide references for the rapid measurement of stress distortion in ferromagnetic pipelines.

关 键 词：油气管道 交流电磁场 仿真 应力检测系统 应力检测 

分 类 号：TE832[石油与天然气工程—油气储运工程]