F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 25/30 (2006.01) F04D 29/44 (2006.01)
Patent
CA 2099710
An exhaust system for an axial flow turbomachine is provided having a diffuser that directs the flow of working fluid from a turbine exit to an exhaust housing having a bottom opening, thereby turning the flow 90° from the axial to radial direction. In the exhaust housing, the flow exiting at the top of the diffuser turns 180° from the vertically upward direction to the downward direction. The strength of the vortex formed in the exhaust housing as a result of this turning is minimized by orienting the outlet of an outer exhaust flow guide portion of the diffuser so that it lies in a plane that makes an angle with a plane perpendicular to the turbine axis. As a result, the minimum axial length of the outer flow guide occurs at a location remote from the exhaust housing outlet and the maximum axial length occurs at a location proximate the opening, thereby crowding the vortex against a radially extending baffle in the exhaust housing.
Gray Lewis
Hofer Douglas Carl
Kron Susan Mary
Wynn Robert Charles
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Siemens Energy Inc.
Westinghouse Electric Corporation
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