双端面机械密封泄漏原因分析

阐述并分析了泵用双端面机械密封的结构及特点,对密封失效原因进行了简要的分析。结合实际工况,分析了其失效原因(如O形圈材质选用不合理,搅拌同轴度偏大,密封面变形),提出了改进措施及使用中的注意事项。并就如何提高机械密封运行周期,从维修质量控制、运行操作的控制、密封水系统等方面进行了阐述,为双端面机械密封长周期运行提供了参考。

The Analysis of Leakage Reasons about the Double-face Mechanical Seal

The structure and characteristic of double -face mechanical seal used in the pump were introduced , and the disabled reason was analyzed in brief.The failure reasons were analyzed in combination with the actual working condition.The failure reasons included O -ring material was selected unreasonably , stirring coaxality was bigger , and the sealing surface was deformed.The improvement measures and the matters needing attention in use were proposed.How to get a long cycle in the using of the mechanical seal better from several ways of service quality , operating control , and sealing water system was discussed.