GAS TURBINE EXHAUST GAS TEMPERATURE CONTROL DEVICE

Japanese Patent JP3491967

B2

PURPOSE: To provide a gas turbine exhaust gas temperature control device which is constituted to prevent consumption of a life for devices situated downstream by providing a set value correcting means to add a correction value to an exhaust gas temperature set value from a set value generating means so that a process amount in a position situated downstream from a gas turbine is prevented from exceeding a specified value.
CONSTITUTION: A deviation (m) between a main steam temperature (k) from a main steam sensor 12 and a main steam temperature specified value 1 from a signal generator 20 is inputted through a limiter circuit 27 to a PI controller 28 by a set value correction means to obtain a correction value 9. Meanwhile, by using an exhaust gas temperature control set value (p) obtained by subtracting a correction value (o) from an exhaust gas temperature control set value (b), a fuel flow rate control valve 1 and the inlet guide vane (IGV) 2 of an air compressor are controlled. According to this invention, when a temperature limit is exerted on devices situated downstream, a gas turbine is operated in such a manner not to exceed the limit value and excessive life consumption of the devices situated downstream is prevented from occurring.

Toshihiko Tanaka
Fusashi Kakizaki

JP11336194A

February 03, 2004

May 02, 1994

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Toshiba Corporation

F01K23/10; F02C6/18; F02C9/00; F02C9/16; F02C9/28; (IPC1-7): F02C9/00; F01K23/10; F02C6/18; F02C9/16; F02C9/28

JP1285608A
JP370804A
JP6466405A
JP58124010A
JP58107805A

Makoto Monda

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