Centerbody for mixer assembly of a gas turbine engine combustor

Details Centerbody for mixer assembly of a gas turbine engine combustor Centerbody for mixer assembly of a gas turbine engine combustor

F - Mech Eng,Light,Heat,Weapons

23

R

F23R 3/28 (2006.01) F02C 3/14 (2006.01) F23R 3/16 (2006.01)

Patent

CA 2615551

A mixer assembly (100) for use in a combustion chamber (62) of a gas turbine engine (10) includes a pilot mixer (102), a main mixer (104) and a centerbody (106) positioned between the pilot mixer (102) and the main mixer (104). The pilot mixer (104) includes an annular pilot housing (108) having a hollow interior and a pilot fuel nozzle (110) mounted in the housing (108) and adapted for dispensing droplets of fuel to the hollow interior of the pilot housing (108). The main mixer (104) includes: a main housing (124) surrounding the pilot housing (108) and defining an annular cavity (126); a plurality of fuel injection ports (128) for introducing fuel into the annular cavity (126); and, a swirler arrangement (130) including at least one swirler positioned upstream from the fuel injection ports (128), wherein each swirler of the arrangement (130) has a plurality of vanes for swirling air traveling through such swirler to mix air and the droplets of fuel dispensed by the fuel injection ports (128). The centerbody (106) includes a fuel manifold (140) therein for providing fuel to the fuel injection ports (128) and an air manifold (141) therein for providing air to an aft portion of the pilot mixer (102) and/or the aft portion of the annular cavity (126) in the main mixer (104).

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