Turbo-generator
AssigneeDoryokuro Kakunenryo Kaihatsu Jigyodan
InventorsHajime Kataoka, Kazuo Haga
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Abstract
A turbo-generator has a tapering cooling part positioned between a vapor turbine part and a generator part, and casings of these parts are combined together to form a sealed single-boundary structure. A turbine shaft in the vapor turbine part, a rotary shaft in the cooling part and a generator shaft in the generator part are combined unitarily and are supported by bearing parts in such a way that the unitary shaft does not pass from the boundary structure. The tapering cooling part has a smaller diameter at the side of the generator part, and the inner circumferential surface of the cooling part forms a labyrinth structure to separate the atmospheres of the vapor turbine part and the generator part.
Claims12
A turbo-generator comprising:
- a vapor turbine;
- a generator;
- a tapering cooling section interposed between said vapor turbine and said generator;
- said vapor turbine, said cooling section and said generator having casings integrated together to form a sealed single-boundary structure;
- said vapor turbine also having a turbine shaft, said cooling section also having a rotary shaft and said generator also having a generator shaft, said shafts being integral;
- bearing parts at ends of said boundary structure and supporting the integral shafts of said vapor turbine, said generator and said cooling section in such a way that the integral shafts do not pass from said single-boundary structure;
- said tapering cooling section having a smaller diameter at a part thereof adjacent said generator than at a part thereof adjacent said vapor turbine;
- said cooling section having a plurality of annular weirs at the inner circumferential surface of said casing thereof;
- and said rotary shaft of said cooling section having a plurality of annular projections at the outer circumferential surface thereof, said annular projections being positioned among said weirs so as to form a labyrinth structure therewith.
Dependencies are inferred from the claim text.