管道金属蚀失量检测聚焦信号加载理论研究  

Research on focusing signal loading technique in detection of metal corrosion loss for pipeline

作　　者：杨勇[1] 陈德胜[1] 刘冀成[2] 柳言国[1] 石仁委[1] 

机构地区：[1]中国石化胜利油田分公司技术检测中心,山东东营257000 [2]成都信息工程学院电子工程学院,四川成都610225

出　　处：《油气储运》2012年第8期601-603,646,共3页Oil & Gas Storage and Transportation

摘　　要：针对瞬变电磁法(TEM)在埋地金属管道金属蚀失量检测中,由于每个检测点覆盖的管道距离较长,难以满足实际检测精度需求的现状,对磁场信号的聚焦加载技术进行研究。基于经颅脑刺激用磁聚焦线圈技术,设计了一种适用于埋地金属管道检测的线圈阵列,并利用遗传算法对线圈阵列的电流大小及相位进行优化,给出了线圈阵列在计算区域内的磁场分布和二维等高线图,数值计算结果表明:该线圈阵列在计算区域产生的磁场具有良好的聚焦功能,可用于埋地金属管道腐蚀检测。Transient electromagnetic method (TEM) has a limited work scope in detecting the metal loss of buried pipeline due to the longer distance for the each detection point covered over pipeline,which is hard to meet the requirements of actual detection accuracy.Relative research is carried out on the focusing signal loading technology of magnetic field.A coil array applicable to detect buried metal pipeline is designed based on the magnetic focusing coil technology for cranio-cerebral stimulus,a genetic algorithm is used to optimize current magnitude and phase of the coil array,and magnetic field distribution of coil array in the calculation field and 2D isoheight maps are given.Numerical calculation indicates that the magnetic field produced by the coil array in the calculation field has a sound focusing function,providing a technique to the detection of corrosion for buried metal pipeline.

关 键 词：埋地管道 金属蚀失量 检测 磁场聚焦 信号 加载 

分 类 号：TE832[石油与天然气工程—油气储运工程]