埋地铁磁管道环焊缝非开挖定位技术研究  

Research of Non-excavation Positioning Technology of Girth Weld in Underground Ferromagnetic Pipeline

作　　者：黄杰 陈浩[1] 刘国军 杨帆 杨承霖 魏永康 刘艳军[1] Huang Jie;Chen Hao;Liu Guojun;Yang Fan;Yang Chenglin;Wei Yongkang;Liu Yanjun(School of Mechatronic Engineering,Southwest Petroleum University,Chengdu 610500,China;Petrochina West Pipeline Company Gansu Oil and Gas Branch Company,Lanzhou 730070,China)

机构地区：[1]西南石油大学机电工程学院,成都610500 [2]中国石油西部管道甘肃输油气分公司,兰州730070

出　　处：《机械科学与技术》2020年第7期1048-1052,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：石油天然气装备教育部重点实验室开放基金项目(OGE201403-28)资助。

摘　　要：利用RD8000测绘管道路由,使用非接触式金属磁记忆检测仪在埋地铁磁管道正上方采集管段信号。通过Savitzky-Golay滤波器对数据进行滤波,发现当磁感应强度法向分量变化量梯度Kz过零点,且磁感应强度切向分量变化量梯度Ky出现极值时,可以判断该特征位置为环焊缝位置。通过对比磁信号图中相邻环焊缝的相对距离ΔL1与建设期管节长度ΔL2,可以匹配磁信号图中环焊缝所对应的建设期编号,且误差小于1 m。最终结合磁记忆检测仪采集的GPS信息,从而确定目标环焊缝地理位置。Using the RD8000 to map pipeline routing,a non-contact metal magnetic memory detector is used to collect the tube segment signal directly above the buried ferromagnetic pipeline.The data is filtered through the Savitzky-Golay filter.It is found that when the magnetic induction normal component change gradient Kz crosses zero and the magnetic induction tangential component change gradient Ky has an extreme value,the feature position can be judged as the girth weld position.By comparing the relative distanceΔL1 of the adjacent ring welds in the magnetic signal diagram with the lengthΔL2 of the construction period,the construction period number corresponding to the girth weld in the magnetic signal diagram can be matched.Finally,the GPS information collected by the magnetic memory tester is combined to determine the geographical position of the target ring weld.

关 键 词：金属磁记忆检测 无损检测 环焊缝定位 

分 类 号：TG115.28[金属学及工艺—物理冶金]