离心泵用机械密封失效分析与排除

Failure Analysis and Elimination of Mechanical Seal for Centrifugal Pump

介绍了离心泵用机械密封的工作原理与结构特点,根据密封原理与渗流机理并运用达西公式,阐述了泵用机械密封典型的泄漏、干摩擦及黏接等故障发生机理,提出了相应的改进措施,从而确保离心泵安全可靠、无泄漏运行。

The working principle and structural characteristics of mechanical seals for centrifugal pumps are introduced.According to the sealing principle and seepage mechanism,and by using the Darcy formula,the typical failure mechanisms of mechanical seals for pumps,such as leakage,dry friction and adhesion,are expounded,and the corresponding improvement measures are put forward to ensure the safe and reliable operation of centrifugal pumps without leakage.