US Patent:
20140205447, Jul 24, 2014
Inventors:
Harry Patat - Hobe Sound FL, US
Cheryl A. Schopf - Jupiter FL, US
Jerome H. Katy - Palm Beach Gardens FL, US
Adam Wallace - Jupiter FL, US
David J. Wiebe - Orlando FL, US
International Classification:
F02C 7/18
F01D 25/16
F02C 6/08
US Classification:
415177, 415111, 60685, 60806
Abstract:
A turbine exhaust casing having an outer casing, an inner casing, an annular exhaust gas path defined between outer and inner flow path walls, and a turbine exhaust casing cavity located radially outward and radially inward from the gas path. A plurality of structural struts support the inner casing to the outer casing, and a fairing surrounds each of the struts in an area extending between the outer and inner flow path walls. A first purge air path extends through at least one of the struts for conducting purge cooling air radially inward to the inner casing, and a second purge air path extends through the strut for further conducting the purge cooling air radially outward to provide a flow of purge air to a location of the exhaust casing cavity radially outward from the outer flow path wall.