| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To achieve miniaturization of auxiliary steam equipment for generating auxiliary steam and reduction in auxiliary steam during the start-up in a combined cycle power generation plant. <P>SOLUTION: A combined cycle power generation plant 1, including: a gas turbine 2; a steam turbine 3; an exhaust heat recovery boiler 4; auxiliary steam equipment 7; a steam path 55 for cooling a GT high temperature part of the gas turbine; and auxiliary steam paths 65, 66 used for a predetermined action other than cooling the high temperature part of the gas turbine by a part of auxiliary steam or a part of main steam, includes: a branch pipe 48 branched from an outlet of the high temperature part 56 of the gas turbine and connected to the auxiliary steam paths; and a desuperheater 49 for cooling steam in the branch pipe so that the temperature of steam passing through the branch pipe becomes a desired temperature. The steam passing through the high temperature part is reused by being introduced into the auxiliary steam paths. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
