Gas turbine combustor with premixing and diffusing fuel nozzles

Details Gas turbine combustor with premixing and diffusing fuel nozzles Gas turbine combustor with premixing and diffusing fuel nozzles

1997-11-24

2000-06-06

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Combustion products generator

60746, F23R 320

Patent

active

06070411&

ABSTRACT:
A gas turbine combustor comprises: an outer casing; a combustor inner cylinder disposed inside the outer casing; a combustion chamber formed in the combustor inner cylinder; a pilot fuel injection unit disposed to a head side portion of the combustion chamber, the pilot fuel injection unit comprising a first premixing combustion nozzle unit, a diffusing combustion nozzle unit and a second premixing combustion nozzle unit, the first premixing combustion nozzle unit being arranged at a central portion of the head side portion of the combustion chamber, the diffusing combustion nozzle unit being arranged so as to coaxially surround an outside of the first premixing combustion nozzle unit and the second premixing combustion nozzle unit being arranged so as to coaxially surround an outside of the diffusing combustion nozzle unit, respectively; and a premixing combustion chamber disposed to an outlet side of the first premixing combustion nozzle unit so as to be communicated with the combustion chamber. There may be further disposed a main premixing fuel injection unit to an outside of the second premixing combustion nozzle unit.

REFERENCES:
patent: 5062762 (1991-11-01), Maghon
patent: 5660045 (1997-08-01), Ito et al.
patent: 5729968 (1998-03-01), Cohen et al.
patent: 5802854 (1998-09-01), Maeda et al.

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