在炼油厂和化工厂的机泵故障中,轴封的故障较多,据国内某炼油厂用离心泵两年多的不完全统计(表1),轴封故障较多,轴承故障次之。在轴封中使用机械密封日益广泛,而对机械密封的故障、原因及分析方面的综合性资料较少。因此,本文系统地总结这方面的资料 In refineries and chemical plant pump failure, the shaft seal more faults, according to a domestic refinery with centrifugal pump more than two years of incomplete statistics (Table 1), shaft seal more faults, bearing the second fault. The use of mechanical seals in the shaft seal is increasingly widespread, and mechanical seals on the failure, reasons and analysis of less comprehensive information. Therefore, this article systematically summarizes this information