Power plants – Combustion products used as motive fluid
Patent
1992-04-22
1994-08-23
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
60 3927, F02C 950
Patent
active
053396200
ABSTRACT:
A control apparatus of a gas turbine combustor obtains a stable combustion with limited NOx emission through a control of a fuel flow rate according to a turbine output and a control of a flow rate of intake air mixed with the fuel. The control apparatus includes an apparatus for detecting at least one of the temperature and the humidity of intake air taken into the combustor, an apparatus for determining and storing, in advance, a stable combustion limit line between a stable combustion region and an unstable combustion region, on a plane of coordinates of a ratio of fuel flow rate to an intake air flow rate or an intake air flow rate and the temperature or the humidity of the intake air, on each turbine load, an apparatus for detecting an instant operational point of the combustor on the plane of coordinates, and an apparatus for correcting the intake air flow rate or the ratio of fuel flow rate to the intake air flow rate according to an increase in the detected temperature or humidity so that the instant operational point does not cross the stable combustion limit line.
REFERENCES:
patent: 3797233 (1974-03-01), Webb et al.
patent: 3854287 (1974-12-01), Rembold
patent: 4566266 (1986-01-01), Kidd et al.
patent: 5121597 (1992-06-01), Urushidani et al.
Patent Abstracts of Japan vol. 9, No. 235 (M-962) Apr. 16, 1990 & JP-A-2 033 419 (Hitachi) Feb. 2, 1990.
Patent Abstracts of Japan vol. 9, No. 235 (M-415) Sep. 1985 & JP-A-60091 141 (Hitachi) May 22, 1985.
Ikeda Hiraku
Moritomo Yoshikazu
Sasada Tetsuo
Sato Isao
Takaba Minoru
Casaregola Louis J.
Hitachi , Ltd.
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