摘要
汽轮发电机组转子上的阵列结构在检修或更换过程中,容易引入额外不平衡量,导致启机过程中振动上升,为此提出了维修过程振动控制和动平衡分析的策略。结合转子阵列结构的特征,针对质量或重径积进行计算,通过逐级控制或整体控制的策略,使得维修后阵列结构的总体质量分布与维修前相当。实践案例表明,该方法能够有效控制维修带来的不平衡偏差,保证机组维修后的振动水平符合要求,避免后续在机组启动过程中实施汽轮发电机组轴系现场动平衡的情况。研究成果对保障汽轮发电机组的运行安全,提升电厂经济性具有重要意义。
During the maintenance or replacement of array structure in turbine generator rotor,additional unbalance is usually introduced in the system,which leads to vibration rise in the process of unit start-up.Accordingly,the strategies of vibration control and dynamic balance analysis in maintenance process was put forward.Combined with the characteristics of rotor array structure,calculation of mass or mass-radius product was conducted,and the overall mass distributions of the array structure before and after maintenance were equivalent through step-by-step control or overall control.The practical cases showed that this method could effectively control the unbalance caused by maintenance,so the vibration level after the maintenance of the unit could meet the relative requirement.Thereby,the dynamic balance of the turbine generator shaft system on site during the start-up process of the unit could be eliminated.The research result can provide reference for guarantee of operation safety of turbine generator unit and economy improvement of power plant.
作者
董祥祥
刘涛
林晓航
DONG Xiangxiang;LIU Tao;LIN Xiaohang(Yangjiang Nuclear Power Co.,Ltd.,Yangjiang 529500,China;Daya Bay Nuclear Power Operations and Management Co.,Ltd.,Shenzhen 518000,China)
出处
《热力透平》
2025年第3期236-240,共5页
Thermal Turbine
关键词
汽轮发电机组
阵列结构
振动控制
动平衡
维修
turbine generator unit
array structure
vibration control
dynamic balance
maintenance
