F - Mech Eng,Light,Heat,Weapons – 01 – K
Patent
F - Mech Eng,Light,Heat,Weapons
01
K
F01K 23/10 (2006.01) F02C 6/04 (2006.01) F02C 7/16 (2006.01)
Patent
CA 2357595
A combined cycle gas turbine system comprising a gas turbine, a steam turbine having a high pressure turbine, an intermediate pressure turbine and a low pressure turbine, and a waste heat recovery boiler, wherein temperature and flow rate of cooling steam are controlled to enhance turbine efficiency. Cooling of a turbine blade is effected by steam partially taken from an outlet of the high pressure turbine and the steam temperature is adjusted by cooling water taken from the waste heat recovery boiler or a condenser. A cooling steam supply system is also provided whereby a stationary blade, a combustor transition piece and a moving blade are supplied with steam from separate systems and the steam temperature of each separate system can be adjusted to effect more efficient cooling. Fuel is preheated to enhance a combined efficiency.
Hyakutake Yoshinori
Sugishita Hideaki
Uematsu Kazuo
Mitsubishi Heavy Industries Ltd.
Riches Mckenzie & Herbert Llp
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