In the paper, mainly from the closure and opening force analysis of methane pump mechanical seal failure causes were discussed, and for its proposed improvement measures, the mechanical seal reliability and security were improved, extended the useful life of mechanical seals, and achieved good benefits.%文章主要从机械密封闭合力和开启力角度分析甲烷泵机械密封失效的原因,并针对其提出改进措施,提高了机械密封的可靠性和安全性,并延长了机械密封的使用寿命,取得了良好的效益.
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