Air fuel mixer for gas turbine combustor having slots at downstr

Details Air fuel mixer for gas turbine combustor having slots at downstr Air fuel mixer for gas turbine combustor having slots at downstr

1994-09-23

1997-06-17

Thorpe, Timothy S.

Power plants

Combustion products used as motive fluid

Combustion products generator

60748, 60739, F23R 332

Patent

active

056386826

ABSTRACT:
An air fuel mixer is disclosed having a mixing duct, a set of inner and outer counter-rotating swirlers adjacent the upstream end of the mixing duct, and a hub separating the inner and outer 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 fuel is injected into the mixing duct 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. In addition, the mixing duct of the mixer includes slots, preferably with flares associated therewith, at its downstream end which modify the shape and direction of mixing eddies emanating therefrom.

REFERENCES:
patent: 3879939 (1975-04-01), Markowski
patent: 4028044 (1977-06-01), Carlisle
patent: 4082495 (1978-04-01), Lefebvre
patent: 4488869 (1984-12-01), Voorheis
patent: 5165241 (1992-11-01), Joshi et al.
patent: 5251447 (1993-10-01), Joshi et al.
patent: 5423608 (1995-06-01), Chou et al.

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