某电厂660MW超超临界机组振动故障诊断及处理  

Vibration Diagnosis and Disposal for 600MW Ultra-Supercritical Unit of Power Plant

作　　者：刘树鹏[1] 王延博[1] 

机构地区：[1]西安热工研究院有限公司

出　　处：《电站系统工程》2014年第5期62-62,65,共2页Power System Engineering

摘　　要：某电厂660 MW超超临界机组5、6、8号轴振严重超标,通过对轴系安装、轴承间隙等方面的调整,同时在发-励联轴器进行动平衡加重,使8号轴振降至76μm以内。另外,考虑到额定转速下5、6号轴振最大振动已接近200μm,决定采用现场动平衡技术,在低-发联轴器上加重,将5、6号轴振降至76μm以内,从而使机组轴系各测点振动均达到优良水平。The No.5, No.6 and No.8 shaft vibrations for 660MW ultra-supercritical unit of a power plant have been seriously exceeded standard, by adjusting the shaft installation and bearing clearance, meanwhile adding the trial weights onto the generator-exciter coupling, the No.8 shaft vibration has been reduced to less than 76~tm. In addition, the maximum vibrations of No.5 and No.8 shaft vibration are close to 2001an at the rated speed, so adopting field dynamic balancing method, the trial weights are added onto the LP rotor-generator coupling, the No.5 and No.6 shaft vibrations have been reduced to less than 76gan. Accordingly the vibrations of unit have been controlled to the excellent level.

关 键 词：660 MW汽轮发电机组 振动 联轴器 动平衡 

分 类 号：TK268.1[动力工程及工程热物理—动力机械及工程]