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A method and apparatus for controlling a temperature of a turbine casing and a turbine rotor in a gas turbine, which method and apparatus enables a maintaining of an optimum gap at a tip end of the rotor blades of the gas turbine over an entire operating range by independently controlling the amount

A method and apparatus for controlling a temperature of a turbine casing and a turbine rotor in a gas turbine, which method and apparatus enables a maintaining of an optimum gap at a tip end of the rotor blades of the gas turbine over an entire operating range by independently controlling the amounts of heat energy supplied to a space of the turbine casing and the turbine rotor.

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An apparatus used in a gas turbine having a turbine casing, a turbine rotor rotatably disposed in said turbine casing, a high temperature gas passage disposed between said turbine casing and said turbine rotor, and means for compressing intake air supplied to the gas turbine as compressed air, to co

An apparatus used in a gas turbine having a turbine casing, a turbine rotor rotatably disposed in said turbine casing, a high temperature gas passage disposed between said turbine casing and said turbine rotor, and means for compressing intake air supplied to the gas turbine as compressed air, to control temperatures of the turbine casing and the turbine rotor, the apparatus comprising: first means for supplying said compressed air through first controlling means for controlling a temperature of said compressed air to a space formed in said turbine casing; second means for supplying said compressed air through second controlling means for controlling a temperature of said compressed air to a space formed in said turbine rotor, said spaces formed in said turbine casing and said turbine rotor communicating with said high temperature gas passage; and means for controlling amounts of heat energy to be supplied to said spaces formed in said turbine casing and said turbine rotor through said first and second means for supplying compressed air, whereby the amount of heat energy supplied to said space formed in said turbine casing is independently controlled from the amount of heat energy supplied to said space formed in said turbine rotor.