Title:
AUTOMATIC PILOT RATIO ADJUSTING DEVICE
Document Type and Number:
Japanese Patent JPH1122490
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To automatically and properly adjust a ratio of a pilot nozzle using a pilot ratio automatic adjusting device of a gas turbine combustor which uses a pilot nozzle in combination with a premixed nozzle. SOLUTION: A signal of a load signal generator 21 is directly inputted to a pilot nozzle signal generator 22, and a main nozzle signal generators 23-1, 23-2, and control valves 25-A, 25-B of main nozzles A, B are controlled by signals of the main nozzle signal generators 23-1, 23-2, respectively. Detection signals from an internal pressure fluctuation monitor 2 and an Nox monitor 3 are inputted to an arithmetic unit 1, and a load signal is inputted to the arithmetic unit 1. A signal for correcting a pilot ratio signal is outputted to an adder 5 such that Nox becomes minimum within an internal pressure fluctuation allowable value with respect to a present load, the outputted signal is added to the output of the pilot nozzle signal generator 22, thereby carrying out a correction. Internal pressure fluctuation and Nox are detected to set an optimum pilot ratio.
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Inventors:
NITTA KOICHI
Application Number:
JP18120397A
Publication Date:
January 26, 1999
Filing Date:
July 07, 1997
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F02C9/34; F23R3/28; F23R3/34; (IPC1-7): F02C9/34; F23R3/28; F23R3/34
Attorney, Agent or Firm:
Arata Ishikawa (1 person outside)