Gas turbine and gas turbine high temperature section cooling method
AssigneeHitachi, Ltd.
InventorsKazunori Yamanaka, Shinya Marushima
Life of this patent
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Abstract
A gas turbine comprising a compressor, combustor and turbine further comprises (1) a cooling air system for supplying part of air compressed by a compressor to the high temperature section of the turbine, (2) a heater exchanger for exchanging heat of part of air compressed by the compressor, this heater being mounted on the cooling air system, and (3) a system for adjusting the air temperature downstream from the heater exchanger in conformity to the operation period of the turbine.
Claims5
A gas turbine comprising a compressor for compressing air, a combustor for mixing air compressed by said compressor with fuel and burning them, and a turbine to be driven by combustion gas burned by said combustor;
- said gas turbine further comprising;
- a cooling air system for supplying part of air compressed by said compressor to the high temperature section of said turbine;
- a heater exchanger for exchanging heat of part of air compressed by said compressor, said exchanger installed on said cooling air system;
- and
- a system for adjusting air temperature on the downstream side of said heater exchanger in conformity to the operation time of said turbine.
A gas turbine comprising a compressor for compressing air, a combustor for mixing air compressed by said compressor with fuel and burning them, and a turbine to be driven by combustion gas burned by said combustor;
- said gas turbine further comprising;
- a cooling air system for supplying part of air compressed by said compressor to the high temperature section of said turbine;
- a heater exchanger for exchanging heat of part of air compressed by said compressor, wherein said exchanger installed on said cooling air system is an indirect heater exchanger equipped with a coolant feed unit for feeding coolant;
- and
- coolant temperature adjusting means for adjusting the temperature of said coolant of said heater exchanger.
A gas turbine comprising a compressor for compressing air, a combustor for mixing air compressed by said compressor with fuel and burning them, and a turbine to be driven by combustion gas burned by said combustor;
- said gas turbine further comprising;
- a cooling air system for supplying part of air compressed by said compressor to the high temperature section of said turbine, and for supplying to the combustor the air having cooled the high temperature section of said turbine,
- a heater exchanger for exchanging heat of part of air compressed by said compressor and a coolant system boost compressor for compressing air between said heater exchanger and said turbine high temperature section, wherein said heater exchanger and booster compressor are installed on said cooling air system, and
- a system for adjusting air temperature on the downstream side of said heater exchanger in conformity to the operation time of said turbine.
Dependencies are inferred from the claim text.