60MW轴流式机组大轴法兰摆度偏大原因分析  

The Shaft Coupling Flange’s Large Swing Cause Analysis of a 60MW Kaplan Unit

作　　者：肖惠民[1] 肖志怀[1] 戴勇峰[2] XIAO Huimin;XIAO Zhihuai;DAI Yongfeng(School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,China;School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]武汉大学动力与机械学院动力系,湖北省武汉市430072 [2]华中科技大学能源与动力工程学院,湖北省武汉市430074

出　　处：《水电与抽水蓄能》2023年第5期21-26,35,共7页Hydropower and Pumped Storage

基　　金：国家自然科学基金项目“复杂多变网构下水电机组稳定性机组与机网协调控制研究”(51979204)。

摘　　要：振动、摆度值是反映机组运行稳定性的重要指标,机组大部分故障都能通过振动、摆度的幅值大小、变化趋势反映出来。为了分析某60MW立式轴流式机组联轴法兰处摆度偏大的原因,开展了顶转子、变转速、变励磁、变负荷等稳定性试验。通过试验数据和理论分析,初步查明了联轴法兰摆度偏大与不平衡质量、磁拉力、水力不平衡等因素相关,为机组后期的检修、技术改造奠定了基础。The value of vibration and swing is an important index to reflect the operation stability of the unit.Most faults of the unit can be reflected through the amplitude and trend of vibration and swing.In order to analysis the reason of the shaft coupling flange’s large swing degree,the stability tests of lifting the rotor,variable speed,variable excitation and variable load are carried out for a large axial flow unit.Through experimental data and theoretical analysis,it is preliminarily found that the larger swing degree of coupling flange is related to the factors such as unbalance mass,magnetic tension and hydraulic unbalance,which provides a scientific basis for the maintenance and technical innovation in the later stage.It can also provide reference for the stability study of other similar units.

关 键 词：稳定性试验 联轴法兰摆度 不平衡 轴流式机组 

分 类 号：TK734[交通运输工程—轮机工程]