Method of cooling centerbody of premixing burner

Details Method of cooling centerbody of premixing burner Method of cooling centerbody of premixing burner

2005-08-18

2008-08-19

Kim, Ted (Department: 3746)

Power plants

Combustion products used as motive fluid

Process

C060S737000, C060S748000, C431S002000, C239S132500

Reexamination Certificate

active

07412833

ABSTRACT:
A gas-air premixing burner for gas turbines includes an air swirler and an annular burner tube surrounding a bluff centerbody. The bluff body serves to stabilize the flame by defining a recirculating vortex. Cooling air is directed to impinge against the bluff face of the centerbody and the spent impingement cooling air flows in a reverse direction towards the air swirler within the centerbody and is discharged through holes at the outer diameter of the centerbody, where it mixes with the fuel/air mixture prior to reaching the flame zone.

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