Patent ID: 9540956
Date: 2017-01-10
CPC Classifications: F01D,F02C,Y10T

Claim:
1. An industrial gas turbine exhaust system, comprising: an inner case; an outer case circumscribing the inner case in spaced relationship relative to a centerline defined by the exhaust system; a turbine exhaust path defined between the outer and inner cases; a plurality of struts interposed between the outer and inner cases that are tilted at an angle relative to a radius defined by the exhaust system centerline; and first and second strut collars respectively coupled to respective ends of each strut and its respective abutting outer or inner case, each respective collar outer surface having a constant fillet radius external profile on an acute angle side thereof, for smooth exhaust flow transition between its respective strut and abutting case surface, the fillet radius profile having a range of 15%-40% of strut maximum thickness, each strut collar having a cross section thickness varying by no more than 10% at any circumferential location.