带有尾透的某型空气压缩机的动力特性分析及对策  

Analysis and Solution of Dynamic Characteristic of a Centrifugal Compressor with Tail Gas Turbine

作　　者：周卫华[1] 何立东[1] 沈伟[1] 王华庆[1] 

机构地区：[1]北京化工大学设备诊断中心,北京100029

出　　处：《汽轮机技术》2004年第6期425-428,457,共5页Turbine Technology

基　　金：国家自然科学基金资助(批准号:50375013;50375014)。

摘　　要：利用有限元法计算了带有尾透的某型空气压缩机两种方案的转子动力特性,表明两方案动力特性基本相同;进一步分析了尾透对整个转子力学特性的影响,发现转子在联轴节和尾透处具有不平衡敏感性,经常引起机组振动超标,提出了采用主动平衡技术的解决方案。Using finite element method, two rotordynamic characteristics of a centrifugal compressor with tail gas turbine are calculated and analyzed in this paper, including critical speeds and the imbalanced response. The results reveal that they almost have no difference on dynamic characteristic. Further investigation is done on the effect of dynamic characteristic of tail gas turbine for the compressor' rotor. A unique feature is discovered that the imbalance response at the coupling and tail gas turbine is very sensitive, thus, auto-balancing is brought forward.

关 键 词：尾透 临界转速 不平衡响应 主动平衡 

分 类 号：TH45[机械工程—机械制造及自动化]