Pre-mixing burner with integrated diffusion burner

Details Pre-mixing burner with integrated diffusion burner Pre-mixing burner with integrated diffusion burner

1983-11-04

1986-05-20

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Combustion products generator

60748, F02C 100, F02G 300

Patent

active

045892601

ABSTRACT:
Burner system for gas turbine combustion chambers having a pre-mixing burner with an integrated diffusion burner, where: the pre-mixing burner has a pre-mixing chamber bounded at the downstream end by a flame retention baffle, into which chamber a main fuel nozzle and a feeding device for combustion air open; the diffusion burner has a pilot fuel nozzle arranged in the central region of the flame retention baffle; and where a fuel control device controls the total amount and the partial amounts of the fuel fed to the main fuel nozzle and the pilot fuel nozzle as a function of the load of the gas turbine such that the diffusion burner can be operated exclusively until the idling speed or a small partial load is reached, and thereafter the diffusion burner and the pre-mixing burner can be operated together, characterized especially by the fact that the entire combustion air required for the operation of the diffusion burner can be fed-in exclusively via the pre-mixing chamber, and that the fuel control device controls the total amount and the partial amounts of the fuel supplied such that the pre-mixing burner can be operated exclusively in the upper load range.

REFERENCES:
patent: 2850875 (1958-09-01), Gahwyler
patent: 3048014 (1962-08-01), Schmidt
patent: 3853273 (1974-12-01), Bahr et al.
patent: 3886728 (1975-06-01), Quinn
patent: 3905192 (1975-09-01), Pierce et al.
patent: 4021188 (1977-05-01), Yamagishi et al.
patent: 4073134 (1978-02-01), Koch
patent: 4222232 (1980-09-01), Robinson
patent: 4356698 (1982-11-01), Chamberlain
patent: 4408461 (1983-11-01), Bruhwiler et al.

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