Patent ID: 6792763
Filing Date: 2004-09-21
Classification: F01D,F02C,F05D,F16J

Abstract:
A sealing device having a general arc-shape for use between a gas turbine combustor transition duct aft frame and a turbine inlet, said sealing device comprising:a first end; a second end; a centerpoint positioned along said arc-shaped sealing device equidistant between said first and second ends; a plurality of mounting tabs, each of said mounting tabs having a first surface, a second surface, thereby defining a seal thickness there between, and a plurality of mounting holes; a first fold having a first radius R1 and connected to said mounting tabs; a plurality of flexible corrugations fixed to said first fold, each of said corrugations having two generally parallel walls of length L2, each of said walls having at least a feed hole and said walls are interconnected by a second fold, said second fold having a second radius R2; a sealing member fixed to one of said corrugations opposite said first fold and having a third radius R3, a third surface, a fourth surface, a plurality of sealing points located along said fourth surface, and a plurality of cooling holes; a seal length; a first coating applied to said first surface of said mounting tabs, said first coating consisting essentially of a primarily Aluminum-Bronze based composition; and a second coating applied to said second folds and said fourth surface of said sealing member as a wear material, said second coating is selected from a group comprising Titanium Aluminum Nitride, Aluminum Titanium Nitride, Titanium Nitride, Stellite 31, and Stellite 694.