大型水轮发电机组转子动力学特性分析  

The characteristic analysis of rotor dynamics of large hydraulic generating uint

作　　者：王正伟[1] 喻疆[1] 方源[2] 温晓军[2] 曹剑绵 石清华 

机构地区：[1]清华大学热能系,北京100084 [2]黄河万寨水利枢纽有限公司,偏关036412 [3]东方电机股份有限公司,四川德阳618000

出　　处：《水力发电学报》2005年第4期62-66,共5页Journal of Hydroelectric Engineering

摘　　要：机组的轴系稳定性和动力特性是机组安全运行的重要指标,不仅直接影响机组的运行品质,同时也影响机组的使用寿命。本文以万家寨水轮机组为例,应用转子动力学计算软件ARMD对机组轴系的临界转速进行分析计算,并预估了机组在不同工况下水力激励力作用下的上导、转子中心、水导和转轮中心等处的摆度响应。计算结果与机组轴系振动实测和模态实测结果进行了比较。比较客观地分析了机组轴系的运行稳定性。The shaft stability of generating unit and the power character play crucial role on the unit safe operation, it not only directly affects the safe operation, but also influences the life of unit. In this paper, the precise calculation of the whirling speed of the Wanjiazhai unit rotor system is made by the application of the ARMD software. At the meantime the swing responses of the top guide bearing, the center of the spool, the turbine guide bearing and the center of runner are estimated in different working conditions. Compare the computation results with the actual measurement of vibration and mode, the shaft stability of unit is analyzed.

关 键 词：混流式水轮机 转子动力学 数值计算 激励 响应 

分 类 号：TK730.1[交通运输工程—轮机工程]