40.5kV固封极柱的设计及工艺优化

Design and Process Optimization of 40.5kV Solid-Insulation-Embedded Poles

针对40.5kV固封极柱在生产过程中因出现绝缘击穿或浇铸过程中环氧树脂漏料造成生产成品率下降的情况,建立真空断路器模型,对固封极柱内部结构进行有限元电场优化设计,并采取在真空灭弧室硅胶层均匀涂抹底涂剂,固封极柱下出线座与真空灭弧室硅胶层之间采用双重密封结构等方法对工艺进行优化。试验结果表明,优化设计后的固封极柱提高了产品的合格率及整体性能。

The yield of 40.5 kV solid-insulation-embedded poles declined when they had insulation breakdown in the process of production or the leakage of epoxy in the process of casting production. This paper established the vacuum circuit breaker model to carry out finite element optimization design for the interior structure of solid-insulation-embedded poles, with silica gel layer painted over silane coupling agent in vacuum arc-extinguishing chamber, with double seal structure adopted between the outgoing line seat of solid-insulation-embedded poles and the silica gel layer in vacuum arc-extinguishing chamber to optimize technology. The test results show that the solid-insulation-embedded poles optimal designed raises the yield of products and the whole performance.