COMBINED CYCLE POWER GENERATING PLANT

摘要

PROBLEM TO BE SOLVED: To provide a device which secures a safety of an A.C. device and is capable of stable operation for a long time by carrying out a favorable mixing at the time of cooling a high temperature cooling part of the gas turbine to be mixed with other steam such as high temperature steam and the like. SOLUTION: This power generating plant is provided with a mixing tube 700 for mixing outlet steam of a steam cooling system 400 for cooling the high temperature cooled part of a gas turbine 101 so that outlet steam which is heated by cooling the high temperature cooled part of the gas turbine 101 and bias steam and the like which detours without being introduced into the high temperature cooled part are introduced into the mixing tube to the mixed thereby forming a mixed super heated steam having an uniform pressure and temperature with the result that no unfavorable influence is given to the device of downstream.