Premixed pilot burner for a combustion turbine engine

Details Premixed pilot burner for a combustion turbine engine Premixed pilot burner for a combustion turbine engine

2005-02-01

2005-02-01

Koczo, Michael (Department: 3746)

Power plants

Combustion products used as motive fluid

Combustion products generator

C060S746000

Reexamination Certificate

active

06848260

ABSTRACT:
A combustor (40) for a gas turbine engine is provided with a premix pilot fuel stage (42) in order to reduce the emission of oxides of nitrogen from the engine. An in-service engine may be modified to add the premix pilot fuel stage by delivering premix pilot fuel to a ring manifold (42) for tip-feeding a premix pilot fuel outlet member such as a swirler vane (78) or fuel peg (124). In this manner, complex and expensive components such as the top hat (46), support housing (48) and diffusion pilot burner assembly (44) may be used without modification. Thermal stresses caused by the differential cooling of the ring manifold by the premix pilot fuel (96) are reduced by a heat shield (94) installed within the manifold.

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