Methods and systems for combustion dynamics reduction

Details Methods and systems for combustion dynamics reduction Methods and systems for combustion dynamics reduction

2008-05-20

2009-08-25

Cuff, Michael (Department: 3741)

Power plants

Combustion products used as motive fluid

Combustion products generator

Reexamination Certificate

active

07578130

ABSTRACT:
Methods and systems for combustion dynamics reduction are provided. A combustion chamber may include a first premixer and a second premixer. Each premixer may include at least one fuel injector, at least one air inlet duct, and at least one vane pack for at least partially mixing the air from the air inlet duct or ducts and fuel from the fuel injector or injectors. Each vane pack may include a plurality of fuel orifices through which at least a portion of the fuel and at least a portion of the air may pass. The vane pack or packs of the first premixer may be positioned at a first axial position and the vane pack or packs of the second premixer may be positioned at a second axial position axially staggered with respect to the first axial position.

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