唇形密封圈对轴承转子动力学性能的影响  

Influence of Lip Seal on Rotor Dynamics Performance

作　　者：周琼[1] 李正美[1] 唐建平 安琦[1] 

机构地区：[1]华东理工大学机械与动力工程学院,上海200237 [2]江苏容天乐机械股份有限公司,江苏常州213000

出　　处：《华东理工大学学报（自然科学版）》2013年第5期629-635,共7页Journal of East China University of Science and Technology

摘　　要：采用传递矩阵法构建了转子-轴承-密封系统的动力学模型,并建立了唇形密封圈径向刚度、油膜刚度和油膜阻尼的计算方法。以某核电站离心风机转子为研究对象,计算并分析了转子-轴承-密封系统弯曲振动的固有频率、阻尼衰减因子、模态振型和不平衡响应,以及唇形密封圈过盈量和轴偏心量对离心风机轴承-转子-密封系统动力学性能的影响,为转子-轴承-密封系统动力学性能的研究提供理论依据。The dynamic model of bearing-rotor sealing system is established by applying transfer matrix method with the rotor of centrifugal fan taken as an object. The calculation method for contact rigidity, film rigidity and film damping of lip seal is constructed. The natural frequency, attenuation coefficients and modal shape of bearing-rotor-sealing system＇s vibration are calculated and analyzed, as well as the influences of eccentric of impeller and belt wheel on the unbalance response amplitude of the system. The effect of interference of lip seal and shaft eccentricity on the vibration performance of bearing- rotor-sealing system is studied. The research of this manuscript can provide theoretical basis on the dynamics performance of bearing-rotor-sealing system.

关 键 词：唇形密封圈 转子系统 密封圈刚度 密封圈阻尼 动力学性能 

分 类 号：TH133.33[机械工程—机械制造及自动化]