摘要
分析了一台接近使用年限的汽轮发电机组产生振动故障的原因。振动测量结果表明,机组的振动主要原因在于结构整体刚度的下降,这也是机组长期运行后各部件间整体刚度下降的结果。在处理整体刚度有困难的情况下,对机组进行了多平面动平衡。总的加重平面数目达到6个,加重后机组振动都降至合格范围。
The vibration failure of a steam^turbo unit verging on its service life is analyzed. The vibration measurement results show that the problem is caused by the degradation of overall structural stiffness as a result of long^term operation of the unit. In view of the difficulty in dealing with the overall stiffness, multi^plane dynamic balancing on the unit is made with the weighting planes totaling up to six, and the vibration of the unit is reduced to acceptable level thereafter.
出处
《广东电力》
2004年第4期78-81,共4页
Guangdong Electric Power
关键词
汽轮发电机组
振动
多平面动平衡
整体刚度
steam^turbo unit
vibration
multi^plane dynamic balancing
overall stiffness
