Patent ID: 7713024
Filing Date: 2010-05-11
Classification: F01D,F05D

Abstract:
1. A turbine comprising: a turbine nozzle assembly having at least one stator airfoil and including an inner sidewall at a radially inner end of the stator airfoil and an outer sidewall structure at the radially outer end of said stator airfoil; and an outer ring carrier having a radially inwardly open groove; wherein said outer sidewall structure is configured to slideably engage said groove in a radial direction while being restricted from moving in an axial direction with respect thereto, a forward contact area between said outer sidewall structure and said outer ring carrier comprising a forward circumferential land defined on an upstream, aft facing surface of said groove, adjacent a radially outer end wall of said groove, said forward circumferential land having an axial surface defined in a radial plane that is disposed aft of and axially spaced from a remainder of the upstream, aft facing surface of said groove, said forward circumferential land having a radial dimension substantially less than a radial dimension of said groove, and an aft contact area between said outer sidewall structure and said outer ring carrier comprising an aft circumferential land defined on one of a downstream, forward facing surface of said groove and a downstream axial face of the outer sidewall structure, said aft circumferential land being disposed adjacent a radially inner portion of said groove, remote from the radially outer end wall of said groove, said aft circumferential land having a radial dimension substantially less than the radial dimension of said groove wherein said aft circumferential land is defined on the downstream axial face of the outer sidewall structure.