Patent ID: 7500824
Filing Date: 2009-03-10
Classification: F01D

Abstract:
1. A turbine comprising: a rotor including an outer surface and at least one bucket extending radially from said outer surface; a stator having at least one stationary nozzle vane and defining a main casing for the rotor; a seal assembly including a flange portion extending in an axial direction of the rotor from a distal end portion of said nozzle vane, and a seal plate member extending in an axial direction of the rotor from said bucket for defining a clearance gap with said flange portion; and an abradable seal material disposed in said clearance gap, on one of said flange portion and said seal plate member, thereby defining a seal gap between said flange portion and said seal plate member, wherein the abradable seal material comprises a sprayed-on coating of a relatively soft material.