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高压直流瓷和玻璃绝缘子金属附件电解腐蚀试验方法

, PP. 103-111

Keywords: 直流瓷和玻璃绝缘子,金属附件,电解腐蚀,试验方法,喷水法,盐雾法

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Abstract:

分别采用喷水法、盐雾法、电解法和固体污层法对绝缘子的铁帽、钢脚进行电解腐蚀模拟试验研究,并对不同试验方法的等效性和可行性进行分析。通过与金属附件的现场腐蚀情况进行对比,并综合考虑各种方法的可操作性,推荐采用喷水法和盐雾法进行绝缘子金属附件电解腐蚀的模拟试验研究。采用喷水法进行铁帽腐蚀试验时,盐溶液的电导率取8~10mS/cm(20℃),喷水流量控制在8~10L/h范围内;进行钢脚腐蚀试验时,溶液电导率取2~3mS/cm(20℃),喷水流量为2~3L/h。采用盐雾法进行试验时,盐水溶液的电导率调配为10~12mS/cm,单个喷嘴的喷雾流量为0.25~0.4L/h。

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