Directing against the abnormal vibration problem occurred during the time of start-up debugging of unit no.1 in Kanshan Power Plant

Jiangsu Province

through vibration monitoring

the collected vibration data and diagrams have been studied and analysed

finding out that the shaft vibration at bearings no.5 and no.6 of the generator was far in excess of the set standard mainly due to smaller gap on the outer oil retainer and impact-rubbing between movable and stationary parts in the generator.On basis of these

corresponding measures have been proposed

the tips of comb-teeth on the outer oil retainer being thinned out.After implementation

the problem of abnormal vibration of unit has been successfully solved

making the said unit to be smoothly strated up.