Analysis and Treatment on Tilting Pad Bearing Damage on 660MW Ultra-supercritical Pressure Stream Turbine
In the startup or shutdown process of 660MW ultra-supercritical steam turbine,appearing grinding pad in low speed when the temperature of titling pad bearing abnormal high,analysis was carried on its characteristic and the reason.Through installing the jacketing oil device for the No.1 and No.2 bearing,enlarging the bearing pad oil throttle diameter and radius of curvature,improving the unit operation mode and taking other measures,the fault of grinding pad in low speed has been resolved entirely and obtained tangible effect.