HEAT RECOVERY TYPE GAS TURBINE

摘要

In a steam cooled type gas turbine, taking an effect of an efficiency and a power output into consideration, there is one in which a rear stage is sufficiently cooled by an air in place of cooling all the stages by a steam. Taking this point into consideration, an object of the present invention is to provide a structure which has both of a steam cooling and an air cooling. In a rotor of the gas turbine having a steam cooled moving blade, a moving blade disposed in a front stage is structured to be cooled by a steam, and a moving blade disposed at the rear stage is structured to be cooled by a cooling air through a stationary blade disposed in front of the same.