摘要
为了解决300MW发电机定子槽线圈的异常升温现象,利用扫描电子显微镜、能谱仪和红外光谱,对定子空芯铜导线中的结垢物进行了表征和分析。结果表明,结垢物是聚四氟乙烯粘结树脂、玻纤束、密封胶及腐蚀物氧化铜;定子槽线圈的异常升温是由外部引入的几种结垢物堵塞空芯铜导线引起的。
To solve the phenomenon of abnormal temperature rising of generator stator slots of 300MW unit, scaling substance adhered to the hollow copper conducting wire of generator stator was characterized and analyzed by SEM, EDS and FTIR. The experimental resuits showed that the scaling substance were mainly polytetrafluoroethylene binding resin, fiberglass bundle, sealing germ and copper oxide from corrosion. The abnormal rising temperature of the stator slots was due to scaling substance blocking hollow copper conducting wile.
出处
《失效分析与预防》
2006年第3期38-41,10,共5页
Failure Analysis and Prevention
关键词
结垢物
水冷系统
表征
腐蚀
scaling substance
water cooling system
characterization
corrosion
