某型单支撑大功率背压机组轴系振动特性分析  

Analysisof Vibration Characteristics of A Single Support High Power Back-pressure Unit

作　　者：曹寒 赵先波[1] 祁乃斌[1] 苏正[1] 陈延强 杨灵[1] CAO Han;ZHAO Xianbo;QI Naibin;SU Zheng;CHEN Yanqiang;YANG Ling(Dongfang Turbine Co.,Ltd.,618000,Deyang,Sichuan,China)

机构地区：[1]东方电气集团东方汽轮机有限公司,四川德阳618000

出　　处：《东方电气评论》2021年第1期55-57,共3页Dongfang Electric Review

基　　金：中国华电集团有限公司重大科技项目计划(CHDKJ19-01-88)。

摘　　要：本文以某型单支撑大功率背压机组轴系为研究对象,首先对轴系各转子进行了模化,然后采用有限元方法计算了轴系的横向弯曲临界转速和不平衡量响应;同时采用连续质量的传递矩阵法计算了轴系的扭振固有频率,计算了短路工况下轴颈的剪切力,并进行了轴系振动安全性分析。In this paper,the shafting of a single support high-power back-pressure unit is studied.Firstly,the rotors of the shafting are modeled,and then the critical speed and unbalance response of the shafting are calculated by the finite element method.At the same time,the torsional natural frequency of the shafting is calculated by the transfer matrix method of continuous mass,the shear force of the journal under the short circuit condition is calculated,and vibration safety analysis is carried out.

关 键 词：背压机 单支撑 轴系 振动 

分 类 号：TM621[电气工程—电力系统及自动化] TK261[动力工程及工程热物理—动力机械及工程]