Patent ID: 7707814
Filing Date: 2010-05-04
Classification: F02C,F05D

Abstract:
1. A fuel-flow-rate control device for controlling a fuel flow rate supplied to a combustor of a gas turbine including a compressor configured to compress and emit air, the combustor configured to burn a fuel supplied via a fuel pipe together with the compressed air supplied from the compressor and to emit a combustion gas, a turbine to be driven by the combustion gas supplied from the combustor, and a power generator configured to be driven by the turbine, said fuel-flow-rate control device comprising: a computing portion configured to obtain a state quantity corresponding to operating conditions and temperature conditions of the gas turbine as an input signal, and to compute a fuel-flow-rate command for controlling the fuel flow rate supplied to the combustor; and a regulating portion configured to set the fuel-flow-rate command obtained by said computing portion to be no greater than a fuel-flow-rate upper limit, the fuel-flow-rate upper limit being set to a fuel flow rate at which an inlet temperature of the turbine is set to be not more than a predetermined upper temperature limit; wherein said computing portion includes: