某110kV变电站耦合电容器引流线夹断裂分析  

Fracture Analysis of Drainage Clip of Coupling Capacitor in a 110 kV Substation

作　　者：刘高飞 樊超 李卓玛吉 张丰丽 贾海龙 云峰 张烁 陈莲君 付宣蓉 LIU Gaofei;FAN Chao;LI Zhuomaji;ZHANG Fengli;JIA Hailong;YUN Feng;ZHANG Shuo;CHEN Lianjun;FU Xuanrong

机构地区：[1]国网青海省电力公司电力科学研究院,青海西宁810008 [2]青海电研科技有限责任公司,青海西宁810000 [3]国网青海省电力公司西宁供电公司,青海西宁810008

出　　处：《青海电力》2020年第4期69-72,共4页Qinghai Electric Power

摘　　要：通过对耦合电容器引流线夹断口的宏观检查、微观形貌分析,显微组织、力学性能和化学成分等方面检测,分析了某110 kV变电站耦合电容器引流线夹断裂失效的原因。结果表明,断裂线夹螺栓开孔边缘处的整圈加工褶皱是线夹开裂的主要原因,材料微观金相组织缺陷及超标铸造气孔缺陷是断裂的次要原因。Through macroscopic inspection,microscopic morphology analysis,microstructure,mechanical properties and chemical composition of the fracture of the coupling capacitor drain clamp,the reasons for the failure of the coupling capacitor clamp fracture in a 110 kV substation are analyzed.The results show that the whole circle of wrinkles at the edge of the bolt hole of the broken clamp is the main reason for the crack of the clamp,and the defects of the micro-metallographic structure of the material and the defects of excessive casting porosity are the secondary reasons for the fracture.

关 键 词：引流线夹 断裂 显微组织 力学性能 失效分析 

分 类 号：TM241[一般工业技术—材料科学与工程]