F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
F02C 7/22 (2006.01) F01D 9/06 (2006.01) F23C 7/00 (2006.01) F23D 17/00 (2006.01) F23R 3/14 (2006.01) F23R 3/28 (2006.01) F23R 3/36 (2006.01)
Patent
CA 2155374
A dual fuel mixer is disclosed having a mixing duct, a shroud surrounding the upstream end of the mixing duct having contained therein a gas fuel manifold and a liquid fuel manifold in flow communication with a gas fuel supply and a liquid fuel supply, respectively, and control means, a set of inner and outer annular counter-rotating swirlers adjacent the upstream end of the mixing duct, where at least the outer annular swirlers include hollow vanes with internal cavities and fuel passages, all of which are in fluid communication with the gas and liquid fuel manifolds to inject gas and liquid fuel into the air stream, and a hub separating the inner and outer annular swirlers to allow independent rotation thereof wherein high pressure air from a compressor is injected into the mixing duct through the swirlers to form an intense shear region and gas and/or liquid fuel is injected into the air stream from the outer annular swirler vanes so that the high pressure air and the fuel is uniformly mixed therein so as to produce minimal formation of pollutants when the fuel/air mixture is exhausted out the downstream end of the mixing duct into the combustor and ignited.
Ekstedt Edward E.
Joshi Narendra D.
Company General Electric
Craig Wilson And Company
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