某大型直联离心压缩机转子系统的动力学特性研究  

Dynamic property study on directly-driven rotor system for centrifugal compressors

作　　者：戴继双[1,2] 李朝峰[1] 邓敏敏[1] 马辉[1] 闻邦椿[1] 

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819 [2]沈阳鼓风机集团有限公司,辽宁沈阳110869

出　　处：《中国工程机械学报》2011年第3期290-294,共5页Chinese Journal of Construction Machinery

摘　　要：建立了某直联转子系统的有限元模型,进行了扭转固有频率的计算;考虑轴承的影响,进行了在定刚度和随转速变刚度情况下,系统弯曲固有特性分析,并采用对数衰减率进行了运动稳定性分析;最后根据API617相关标准,施加2种激励工况,进行了不平衡响应计算.对所有计算结果均与试验结果进行了对比.By establishing a finite element model for a specific directly-driven rotor system,the inherent reverse frequency is calculated.With response to the impact of bearings,the inherent system bending properties are analyzed regarding fixed stiffness and rotary-speed-varied rigidity.In addition,the movement stability is analyzed using the logarithmic decay rate.Subject to API617-related standards,two excitation conditions are imposed for imbalanced response calculation.To this end,a comparison between calculation and testing results has been conducted.

关 键 词：离心压缩机 转子系统 有限元 临界转速 不平衡响应 

分 类 号：O322[理学—一般力学与力学基础]