密封激起的转子失稳振动  

Unstable Vibration of Rotors Induced by Shaft Seals

作　　者：廖明夫[1] 杨俐骏[2] 金科[1] 

机构地区：[1]西北工业大学航空发动机系,西安710072 [2]中国航空工业总公司第六二四研究所,江油621703

出　　处：《振动．测试与诊断》2001年第1期45-49,共5页Journal of Vibration,Measurement & Diagnosis

摘　　要：分析了密封装置激起转子失稳的机理 ,在此基础上 ,得出了转子失稳的条件以及失稳边界 ,即失稳发生在转子工作转速大于 2倍转子临界转速的条件之下。根据密封装置对转子刚度和阻尼的影响规律 [1,2 ] 。The mechanism of the instability of a rotor vibration induced by its shaft seals is analyzed. Baced on the analysis, an instability boundary of the vibration, which lies beyond twice the first critical speed of the rotor, is obtained. Some measures against the vibration are proposed according to the influence of the seals on the rigidity and damping of the rotor.

关 键 词：密封装置 转子失稳振动 失稳条件 失稳边界 涡轮机械 

分 类 号：TH136[机械工程—机械制造及自动化] TH113.25