Patent ID: 6364613
Filing Date: 2002-04-02
Classification: F01D

Abstract:
An assembly for locking a generally radially extending bucket to a wheel of a rotor of a turbine, the bucket having a plurality of bucket dovetail projections with a plurality of bucket dovetail slots defined therebetween, and the wheel having a plurality of generally radial wheel dovetail projections with a plurality of dovetail slots defined therebetween, the bucket dovetail projections being received within respective wheel dovetail slots, and a plurality of dovetail pins being received through respective dovetail pin bores defined by aligned apertures defined in said bucket dovetail projections and said wheel dovetail projections, at least one said pin having a bore defined therethrough whereby said pin is hollow and defines a flow path for fluid flow therethrough from one axial side of the wheel to another, said bore of said pin being unobstructed during operation of said turbine so that fluid can flow therethrough from said one axial side of the wheel to the other during rotation of the rotor.