摘要:
A turbine rotor includes a plurality of moving blades having cooling paths through which a refrigerant flows inside, a plurality of wheels having the moving blades mounted in the outer periphery thereof and at least one spacer member installed between the wheels. The spacer member has a plurality of flow paths through which a refrigerant flows after cooling the moving blades. The plurality of flow paths have flow paths interconnecting to the cooling paths in the moving blades on a first wheel adjacent the spacer member and interconnecting to a space formed on a side wall surface with which a second wheel adjacent the spacer member and the spacer member are in contact.
摘要:
A gas turbine is equipped with a moving blade cooling apparatus arranged in association with a turbine rotor in which a plurality of discs are mounted, a plurality of moving blades are mounted each to an outer peripheral portion of each of the discs and a plurality of spacers are also disposed in spaces between the respective discs at portions corresponding to a location of stationary blades and in which the moving blades are formed each with a cooling medium flowing passage and the discs and the spacers are arranged with spaces therebetween for passing a cooling medium in a radial direction of the rotor. A closed-loop cooling unit is thus formed for supplying the cooling medium to the cooling medium flowing passage formed in the moving blade and recovering the same therefrom. A passage assembly, which is provided with a cooling medium supplying passage and a cooling medium recovering passage running in parallel with each other in an axial direction of the turbine rotor, is provided at a central axis portion of the turbine rotor, the cooling medium supplying passage of the passage assembly is formed with a cooling medium supplying port in communication with a side of a cooling medium inlet of the cooling medium flowing passage formed in the moving blade, and the cooling medium recovering passage of the passage assembly is formed with a cooling medium recovering port in communication with a cooling medium outlet of the cooling medium flowing passage in the moving blade.