Method of combustion with a two stream tangential entry nozzle

Details Method of combustion with a two stream tangential entry nozzle Method of combustion with a two stream tangential entry nozzle

1996-12-20

1998-06-09

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60737, F02C 722, F02K 312

Patent

active

057618976

ABSTRACT:
A method for burning fuel in the combustor of a gas turbine engine with a premixing type of combustion which comprises providing a scroll swirler having first and second endplates, the first endplate is spaced relation to the second endplate defining a substantially cylindrical mixing zone therebetween, the second endplate having a combustor inlet port extending therethrough, providing a centerbody located within the mixing zone and having a radially outer surface that tapers toward the combustor inlet and extends substantially the entire length of the mixing zone, introducing a first portion of combustion air tangentially into the mixing zone substantially continuously along the length thereof, introducing a first portion of fuel into the combustion air as the combustion air is introduced into the mixing zone, mixing the combustion air and fuel by swirling the combustion air and fuel about the centerbody while flowing the combustion air and fuel towards the combustor inlet, flowing the first portion of combustion air into the combustor inlet, introducing a second portion of combustion air into the first portion radially inward thereof at the combustor inlet, the sum of the first and second portions of combustion air defining total airflow, and the second portion of combustion air equal to 85-89% of the total airflow, and burning the fuel external of the mixing zone.

REFERENCES:
patent: 5307634 (1994-05-01), Hu
patent: 5375995 (1994-12-01), Dobbeling et al.
patent: 5461865 (1995-10-01), Snyder et al.
patent: 5611196 (1997-03-01), Wilson
patent: 5671597 (1997-09-01), Butler et al.

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