高压电器2013，Vol.49Issue(3)：103-109,7.
复合绝缘子非应力腐蚀断裂的技术研究
Joint Diagnosis for a Composite Insulator Fracture not Because of the Stress Corrosion
闫文斌 1王达达 1李卫国 1吴章勤 1杨迎春 1于虹1
作者信息
摘要
Abstract
Composite insulator for its excellent characteristics has alternative ceramics, glass material insulator trends. Major manufacturers and power grid design construction unit did lots of for the selection of composite insulators, design, defects detection in many aspects such as the research and demands, and made great achievements. Aiming at a composite insulators fracture accident which was used for an overhead lines, this paper used the composite insulator's commonly testing method (appearance testing), and initially determined that the accident can't be in the operation of the stress corrosion. Then we used the power grid infrastructure commonly used test method (metallographic detection, penetration testing and hardness testing) and grid equipment testing new technology (X-ray testing). The result finally confirmed that the cause of the accident was due to the ice-shedding which take off the ice jump composite insulator by bending stress lead to fracture. It was recommended that the design unit design, selection of the composite insulator process to special consideration on the ice in serious tiny terrain and micro meteorological factors.关键词
复合绝缘子/外观检测/射线检测/渗透检测/金相检测/硬度检测/脱冰跳跃Key words
composite insulator/appearance testing/X-ray testing/penetration testing/metallographic detection/hardness testing/ice-shedding分类
信息技术与安全科学引用本文复制引用
闫文斌,王达达,李卫国,吴章勤,杨迎春,于虹..复合绝缘子非应力腐蚀断裂的技术研究[J].高压电器,2013,49(3):103-109,7.
