Patent ID: 8926269
Filing Date: 2015-01-06
Classification: F01D

Abstract:
1. A seal and seal carrier for use between a non-rotating nozzle and a rotating component of a turbine, the seal and seal carrier comprising: an arcuate sheet metal seal carrier body configured to attached to the nozzle, the sheet metal carrier body includes a stepped, conical shape in a region between opposite ends, wherein a diameter at one of said opposite ends is larger than a diameter at the other of said opposite ends, inwardly and outwardly facing surfaces of said arcuate sheet metal seal carrier body within said region being identical, said region formed with plural stepped sections defined by alternating radial and axial portions; and a seal element mounted on each axial portion, each seal having a substantially constant radial height; wherein mounting flanges are provided at said opposite ends of said arcuate sheet metal seal carrier body; and wherein said sheet metal seal carrier body is formed with one or more axially-extending stiffening ribs on said outwardly facing surfaces and the axially extending ribs project radially outwardly toward the nozzle and from the outer surface of the arcuate sheet metal steel carrier body, wherein the ribs each include a radial edge abutting a radially inwardly extending surface of one of the stepped sections and an axial edge abutting an axially extending surface of an adjacent one of the stepped sections.