旋转机械外伸段诱发不稳定振动影响评估方法  

Influence Evaluation Method for Unstable Vibration Induced by Overhanging Shaft of Rotating Machinery

作　　者：张晓斌 张泽 宋亚军 司派友 杨建刚[2] ZHANG Xiao-bin;ZHANG Ze;SONG Ya-jun;SI Pai-you;YANG Jian-gang(State Grid Jibei Electric Power Research Institute(North China Electric Power Research Institute Co.,Ltd.);National Engineering Research Center of Turbo-generator Vibration,Southeast University)

机构地区：[1]国网冀北电力有限公司电力科学研究院(华北电力科学研究院有限责任公司) [2]东南大学火电机组振动国家工程研究中心

出　　处：《化工机械》2023年第3期383-387,共5页Chemical Engineering & Machinery

基　　金：华北电力科学研究院有限责任公司科技项目(KJZ2022014)。

摘　　要：汽轮发电机、燃气轮机、风机等旋转机械大多带有一段长的外伸段。若外伸段较长,高速旋转时容易出现甩头现象,诱发设备不稳定振动。提出了一种外伸轴段对不稳定振动影响的评估模型,该模型可以全面反映外伸轴段结构特点和工作状态,能够指导外伸轴段设计和故障分析。Most rotating machines like turbine generator,gas turbine generator and fans have an overhanging shaft.The long overhanging shaft may cause large dynamic deformation of shaft and induce unstable vibration while rotating at a high speed.In this paper,an evaluation model for this unstable vibration induced by overhanging shaft was proposed to reflect both structural characteristics and working state of the overhanging shaft fully and to guide both design and fault analysis of overhanging shaft.

关 键 词：旋转机械 振动 外伸段 固有频率 评估方法 

分 类 号：TQ050.7[化学工程]