F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 25/28 (2006.01) F01D 25/14 (2006.01) F01D 25/24 (2006.01) F01M 11/02 (2006.01) F02C 7/20 (2006.01) F02C 7/24 (2006.01) F16N 21/06 (2006.01)
Patent
CA 2701313
A gas turbine engine having a mid turbine frame comprising an annular outer case providing a portion of an engine casing; an interturbine duct (ITD) disposed within the outer case, the ITD including outer and inner rings radially spaced apart one from another and being interconnected by a plurality of radially extending and circumferentially spaced hollow strut fairings, the inner and outer rings co- operating to provide a portion of a hot gas path through the engine; a tube for delivering or discharging a lubricant fluid to or from a bearing housing, the tube extending radially through one of the hollow struts; and an insulation structure radially extending through one said hollow strut fairing, the insulation structure surrounding the tube and being spaced apart from the tube and from a hot internal surface of the one hollow strut fairing for shielding the tube from heat radiated from the hot internal surface of the one hollow strut fairing and for preventing the lubricant fluid from contacting the hot internal surface of said one hollow strut fairing when lubricant fluid leakage occurs.
Durocher Eric
Legare Pierre-Yves
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Pratt & Whitney Canada Corp.
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