丙烯输送泵机械密封失效原因分析及改进  

Analysis on the Causes for the Mechanical Seal Failure of Propylene Pump and Modification

作　　者：陈其杰[1] 喻宁[2] 

机构地区：[1]镇海炼油化工股份有限公司,浙江宁波315207 [2]四川日机密封件有限公司,四川成都610041

出　　处：《流体机械》2006年第1期47-49,共3页Fluid Machinery

摘　　要：通过对丙烯输送泵机械密封使用情况的跟踪和性能参数的验算以及对其失效原因进行的分析,得出了温度过高、造成液膜相态不稳定是密封泄漏的主要原因,并相应采取适当减小端面比压、改善冷却和封液循环等措施,以降低密封端面温度,从而使密封性能和使用寿命均得到了较大提高。By following applications and calculating performance parameters,the maehanical scal failure of propylene pumps has been analyzed.The results showed that the main reason of seal leakage was the instability of fluid film phase state resulted from overheating. Both seal performance and service life have been improved by reducing face pressure, improving cooling and circulating method.

关 键 词：机械密封 液膜相态 稳定性 改进 

分 类 号：TH136[机械工程—机械制造及自动化]