Patent ID: 8485784
Filing Date: 2013-07-16
Classification: F01D

Abstract:
1. A retention system for a plurality of turbine buckets located in respective mating slots in a turbine rotor wheel, the retention system comprising: a plurality of first retention slots formed in outer peripheral portions of the turbine wheel; a plurality of second retention slots formed in wheel mounting portions of said buckets, said first and second retention slots aligned to form an annular retention slot extending about a peripheral portion of said rotor wheel; a lockwire located within said annular retention slot, said lockwire having engaged free ends; a plurality of axially-oriented retaining pins fixed in said rotor wheel holding said lockwire in said annular retention slot; and at least one pin fixed to said lockwire and arranged to engage a tab on one of said buckets, to thereby limit circumferential rotation of said lockwire within said annular slot.