The Research on Shaft Center Position of Ultra-Supercritical Steam-Turbine Generator

The shaft center of steam-turbine generator, showing relative position of shaft and bearing bush, would changed when jacking oil pump or turning gear started, raising speed and loading carrying. The change of bear carrying, oil film rigidity and clearance variation in flow passage of steam-turbine generator could be deduced through measuring shaft center position and analyzing its variation to working conditions, which would be helpful for treating vibration malfunction cased by deficiency of oil film rigidity, steam flow exciting and rubbing.