X光检测技术在输电检修作业中的应用  

Application of X-Ray Detection Technology in Power Transmission Maintenance

作　　者：张雷 迟兴江[1] 段赛飞 史志远 高振 倪天一 ZHANG Lei;CHI Xingjiang;DUAN Saifei;SHI Zhiyuan;GAO Zhen;NI Tianyi(State Grid Beijing Electric Power Company Maintenance Branch,Beijing Fengtai 100069,China)

机构地区：[1]国网北京市电力公司检修分公司,北京丰台100069

出　　处：《农村电气化》2024年第10期50-54,共5页Rural Electrification

摘　　要：文章介绍了X光检技术在输电检修作业中,用来探究耐张线路压接管内部压接质量的重要作用,列举了在实际生产作业中发现的压接管典型缺陷;并对13353支压接管测量结果进行深入分析,得出耐热导线压接管钢芯断股断开、钢锚断裂的比例约为普通导线的84倍,且危急缺陷率为普通导线的6.4倍;随后通过机械性能(握力测试)、电气性能(温升、电阻测试)试验验证了通过安装备份线夹的方法处理钢芯断股、断开缺陷的可行性;最后针对X光射线源辐射剂量进行了检测,发现在正常工作中作业人员受到的辐射量为0.53~0.63 nSv/h,远低于工业标准规定2.5μSv/h,因此在日常检修作业中X光射线源辐射剂量对人体的伤害可以忽略不计。This paper introduces the important role of X-ray inspection technology in power transmission maintenance operations,explores the internal crimping quality of tension line crimping tubes,and lists typical defects of crimping tubes found in actual production operations;an in-depth analysis of the measurement results of 13353 crimping tubes shows that the proportion of steel core broken strands and steel anchor broken in heat-resistant conductor crimping tubes is about 84 times that of ordinary conductors,and the critical defect rate is 6.4 times that of ordinary conductors;then the feasibility of dealing with steel core broken strands and disconnection defects by installing backup wire clamps was verified through mechanical properties(grip strength test)and electrical properties(temperature rise,resistance test)tests;finally,the radiation dose of X-ray sources was tested,and it was found that the radiation dose received by operators in normal work was 0.53~0.63 nSv/h,which is far lower than the industrial standard of 2.5μSv/h.The radiation dose of X-ray sources in normal work is harmless to the human body.

关 键 词：X光检测 耐张线路压接管 钢芯断股断开 备份线夹 辐射剂量 

分 类 号：TH744.15[机械工程—光学工程]