F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
F02C 9/26 (2006.01) F02C 9/16 (2006.01) F23D 14/02 (2006.01) F23D 23/00 (2006.01) F23R 3/10 (2006.01) F23R 3/28 (2006.01) F23R 3/34 (2006.01) F23R 3/40 (2006.01)
Patent
CA 2121314
ABSTRACT OF THE DISCLOSURE; A gas turbine combustor having a pre-mixing zone and a combustion zone separated by a barrier plate. A plurality of concentrically arranged annular passages, into which lean mixtures of fuel and air are introduced, are disposed in the pre-mixing zone. Each of the annular passages has a discharge end in which a plurality of swirlers are circumferentially arranged that allow fuel/air mixtures flowing through the annular passages to enter the combustion zone, the swirlers acting as flame holders. A toroidal fuel manifold upstream of each of the annular passages allows the fuel/air ratio in each annular passage to be individually controlled. The firing temperature of the combustor is increased by sequentially supplying fuel to each annular passage in turn, with the innermost passages being supplied with fuel first. A pilot fuel assembly is centrally disposed with respect to the annular passages and has swirler vanes and an ignitor.
Amos David Joseph
Colautti Eugenio
Mcwhirter Anthony
Bereskin & Parr
Westinghouse Electric Corporation
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