理化检验-物理分册2017，Vol.53Issue(5)：361-364,4.DOI:10.11973/lhjy-wl201705013
220kV输电线路悬垂金具直角挂板断裂原因分析
Analysis on Fracture Reasons of Rectangular Hanging Plates of Hanging Fittings in the 220kV Electric Transmission Line
洪毅成 1蔡建宾1
作者信息
- 1. 国网福建电力科学研究院,福州 350001
- 折叠
摘要
Abstract
A fracture accident of the rectangular hanging plates of hanging fittings occurred in a 220 kV electric transmission line.Based on the analysis of the accident background,through the macroscopic inspection,load analysis,scanning electron microscope and spectrum analysis of the fracture,the fracture reasons were analyzed from the aspects of the connection type,operation environment,material quality condition,and so on.The results show that:there were some cracks in the rectangular hanging plates during manufacturing process;under the combined action of corrosive medium and high wind,cracks propagated constantly,and eventually led to the corrosion fatigue fracture of the rectangular hanging plates.Finally,some preventive measures were proposed according to the fracture reasons.关键词
输电线路/金具/直角挂板/腐蚀疲劳断裂Key words
electric transmission line/fitting/rectangular hanging plate/corrosion fatigue fracture分类
信息技术与安全科学引用本文复制引用
洪毅成,蔡建宾..220kV输电线路悬垂金具直角挂板断裂原因分析[J].理化检验-物理分册,2017,53(5):361-364,4.
