Patent ID: 7941920
Filing Date: 2011-05-17
Classification: F01D,F05D,Y02T,Y10T

Abstract:
1. A method for securing an outer seal assembly of a turbine rotor stage to the turbine casing comprising the steps of: providing a plurality of radially outwardly extending arms on said outer seal assembly, said arms having a rear surface and a plurality of axially forwardly extending hanger elements; providing a mounting flange on the inner side of said casing and having a radially inwardly extending leg and an axially rearwardly extending leg with a radially outer surface which, together with the inner side of said casing, forms a circumferential groove for receiving said hanger elements therein; providing a plurality of arcuate elements having an angle-shaped cross section comprising a radially extending panel with a plurality of axially forward extending hooks adapted to be received in said circumferential groove and having at least one axially forwardly extending flange for engaging said arm rear surface of said outer seal assembly; and locking said outer seal assembly and said angle-shaped flange in their installed positions within said groove.