Steam turbine bucket for power generating plant, has fin with large thickness in one side and small thickness in other side being formed in periphery of snubber cover

摘要

Snubber cover (6) is mounted to leading end of moving blade (5) around periphery of turbine shaft. Convex fin (10) is extended in peripheral direction along outer circumference of the cover. Thickness of fin is made larger in one end (10a) than the other end (10b).