主动平衡技术在带有尾透的离心压缩机上的应用研究(I数值计算)  

Applied Research of Automatic Balance Technology for Centrifugal Compressors Fitted with a Tail (Part II: Numerical Calculation)

作　　者：沈伟[1] 何立东[1] 周卫华[1] 王华庆[1] 

机构地区：[1]北京化工大学设备诊断工程研究中心,北京100029

出　　处：《热能动力工程》2005年第2期174-177,共4页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学基金资助项目(50375013);国家自然科学基金资助项目(50375014)

摘　　要：研究了利用主动平衡技术消除某带有尾透的离心式压缩机柔性转子的不平衡问题,应用有限元方法计算比较轴上存在不平衡时轴颈振动幅度的大小,找到了轴上安装主动平衡装置的最佳位置。着重分析了配重大小对初始振动降低的幅度,可为选择主动平衡装置的最大平衡能力提供参考,并且经数值仿真验证了转子系统的减振效果。研究结果为转子的主动平衡装置的安装和主动平衡试验提供了参考和依据。A study was conducted concerning the use of automatic-balance technology for resolving the imbalance problem of the flexible rotor of a centrifugal compressor fitted with a tail. By using a finite element method the magnitude of shaft-journal vibration amplitude was calculated and compared in the presence of a shaft imbalance. As a result, an optimum location was identified for installing an automatic balance device on the shaft. A detailed analysis was performed of the relationship between the magnitude of counter weight and the reduction of initial vibration. This can provide a reference for selecting the maximum balancing capacity of an automatic balance device. In addition, by way of numerical simulation the vibration reduction effectiveness of a rotor system was verified. The results of the above study can offer a basis and reference for the installation of an automatic balance device on a rotor and for conducting automatic balancing tests.

关 键 词：主动平衡 有限元 离心压缩机 数值仿真 

分 类 号：TK474.8[动力工程及工程热物理—动力机械及工程]