Patent ID: 8272223
Filing Date: 2012-09-25
Classification: F02C,F05D

Abstract:
1. A twin-shaft gas turbine with a gas generator, the gas turbine comprising: a compressor having an inlet guide vane at its air inlet side; a combustor for generating combustion gases by burning a fuel mixedly with the compressed air supplied from the compressor; and a high-pressure turbine rotationally driven by the combustion gases supplied from the combustor, the high-pressure turbine being used to generate a driving force of the compressor; wherein the gas turbine further comprises control means of the inlet guide vane; and the control means of the inlet guide vane includes, a first control mode in which an opening angle of the inlet guide vane is controlled on the basis of a corrected rotation speed corresponding to atmospheric temperature of the gas generator shaft which rotates at low speed, a second control mode in which the opening angle of the inlet guide vane is controlled to maintain a constant rotation speed of the gas generator shaft which rotates at high speed.