油气处理厂埋地管道PCM检测的电流控制方法

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英文篇名：Current Control Method for PCM Detection of Underground Pipeline in Oil and Gas Treatment Plant 作者：冯强 ; 邓勇刚 ; 李燕 ; 邓伟林 ; 何莎 ; 喻建胜 英文作者：FENG Qiang;DENG Yonggang;LI Yan;DENG Weilin;HE Sha;YU Jiansheng;Safety,Environment,Quality Supervision and Testing Research Institute,CNPC Chuanqing Drilling Engineering Company Limited;Tarim Oilfield Company; 关键词：PCM ; 回路电阻 ; 输出电流信号 ; 埋地管道的定位 ; 油气处理厂 英文关键词：PCM;;loop resistance;;output current signal;;positioning of underground pipeline;;oil and gas treatment plant 中文刊名：WSJC 英文刊名：Nondestructive Testing 机构：中国石油川庆钻探工程有限公司安全环保质量监督检测研究院;塔里木油田公司; 出版日期：2018-05-10 出版单位：无损检测 年：2018 期：v.40;No.398 语种：中文; 页：WSJC201805020 页数：4 CN：05 ISSN：31-1335/TG 分类号：78-81

摘要

针对使用PCM(多频管中电流法)对油气处理厂的埋地管道进行检测时,输入电流在三通处会受管道支管的影响而产生分流的问题,将检测的管道分支看成是并联电路,在输入电压不变的情况下,通过降低检测目标管段回路电阻的方法,控制埋地管道各支路PCM检测的输出电流信号强度,使检测电流信号更多地向待检测的管段分配,完成对油气处理厂埋地管道的定位。
        While using the PCM(Pipeline Current Mapper)method to test the buried pipeline of the oil and gas treatment plant,the input current will be shunted due to the influence of the pipeline branch as there exist large numbers of branch pipelines.The pipeline branch can be regarded as a parallel circuit.Under the condition of the same input voltage,the output signal strength of every branch of the buried pipeline can be controlled by reducing the resistance of the target pipe loop,so that the detection current signal is more distributed to the pipe segment to be detected,and thus the positioning of the buried pipeline of the treatment plant can be completed.

引文

[1]彭蕾,冯强,何莎,等.PCM+“短接法”在站场埋地管道定位中的应用[J].管道技术与设备,2016(6):47-49.