Patent ID: 7278820
Filing Date: 2007-10-09
Classification: F01D,F05D

Abstract:
1. A ring seal system comprising: a vane carrier having an inner peripheral surface; a forward isolation ring and an aft isolation ring spaced axially downstream of the forward isolation ring, wherein the isolation rings are attached to the vane carrier such that the isolation rings extend substantially circumferentially about and substantially radially inward from the inner peripheral surface of the vane carrier; and a ceramic ring seal enclosed within the vane carrier, wherein the ring seal is operatively connected to the forward and aft isolation rings by a plurality of elongated fasteners, whereby differential thermal growth between the isolation rings and the ring seal is permitted, wherein the ring seal includes a forward span, an aft span and an axial extension connecting therebewteen, wherein the aft span of the ring seal is adapted to substantially matingly engage the aft isolation ring, wherein at least a portion of the aft span and the aft isolation ring are coated with a wear resistant material.