| 摘要 |
PURPOSE: An assembly for coupling a bucket to a wheel of a turbine rotor and a method for fixing a turbine control stage and the bucket to a rotor wheel are provided to the effort in removing a dovetail pin, to reduce secondary damage, and to supply a source of cooling flow to the forward side of the turbine wheel. CONSTITUTION: In an assembly for locking a generally radially extending bucket(12) to a wheel(16) of a rotor of a turbine, the bucket has a plurality of bucket dovetail projections(36) with a plurality of bucket dovetail slots(38) defined, and the wheel has a plurality of generally radial wheel dovetail projections(18) with a plurality of dovetail slots(40) defined. The bucket dovetail projections are received within respective wheel dovetail slots, and a plurality of dovetail pins(14) are received through respective dovetail pin bores defined by aligned apertures defined in the bucket dovetail projections and the wheel dovetail projections. At least one pin has a bore pierced, and the pin is hollow and defines a flow path for fluid flow therethrough from one axial side of the wheel to another.
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