| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas turbine cooling system and a gas turbine cooling method, by which a gas turbine can be efficiently cooled by steam without using high-pressure steam generated at an exhaust heat recovery boiler or without reducing generation of the high-pressure steams. <P>SOLUTION: The gas turbine cooling system includes: an exhaust heat recovery boiler 2 having a gas turbine 3, a high-pressure system 6 for generating high-pressure steam by exchanging heat with exhaust heat from the gas turbine 3, a high-pressure drum 11 for supplying water and steam to the high-pressure system 6, a medium-pressure system 7 for generating medium-pressure steam by exchanging heat with exhaust heat from the gas turbine 3, and a medium-pressure drum 12 for supplying water and steam to the medium-pressure system 7; a medium-pressure steam pipe 19 for connecting the medium-pressure system 7 with the cooling system of the gas turbine 3 and for supplying medium-pressure steam from the medium-pressure system 7 to the cooling system; and a steam supply pipe 20 for connecting the high-pressure drum 11 with the medium-pressure drum 12 and for supplying the saturated steam within the high-pressure drum 11, from the high-pressure drum 11 to the medium-pressure drum 12. <P>COPYRIGHT: (C)2013,JPO&INPIT |
