The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 01, 2000
Filed:
Sep. 25, 1997
Yoshitaka Fukuyama, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
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.