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US 6,272,861 B1Granted
Thermal power plant having a steam turbine and method for cooling a steam turbine in a ventilation mode
AssigneeSiemens Aktiengesellschaft
InventorDietmar Bergmann
Life of this patent
Estimating the term…
Abstract
A thermal power plant includes a steam turbine having guide blades. At least one of the guide blades has a cavity. The cavity is connected to a fluid conduit for feeding fluid and to orifice conduits opening on an outer surface of the guide blade. A method for cooling a steam turbine in a ventilation mode is also provided.
Claims18
A thermal power plant, comprising:
- a steam turbine including:
- a turbine rotor directed along a main axis;
- an inner housing surrounding said turbine rotor;
- a guide-blade structure disposed in said inner housing and surrounding said turbine rotor in circumferential direction, said guide-blade structure having guide blades;
- and
- at least one of said guide blades having a cavity formed therein, having an outer surface and having at least one orifice conduit branching off from said cavity and opening to said outer surface;
- a fluid conduit connected to said cavity for feeding cooling fluid;
- a condensate vessel;
- and
- a closeable transfer conduit connected between said condensate vessel and said fluid conduit.
7 more elements
A method for cooling a steam turbine in a ventilation mode, which comprises:
- providing a turbine rotor directed along a main axis;
- providing an inner housing surrounding the turbine rotor;
- providing a guide-blade structure in the inner housing surrounding the turbine rotor in circumferential direction;
- providing a hollow guide blade of the guide-blade structure, the hollow guide blade having an outer surface and a cavity;
- providing orifice conduits connecting the cavity of the hollow blade guide to the outer surface of the hollow blade guide;
- and
- feeding wet steam through the hollow guide blade, the wet steam flowing through the orifice conduits to the outer surface of the guide blade.
4 more elements
A method for cooling a low-pressure steam turbine in a ventilation mode, which comprises:
- providing a turbine rotor directed along a main axis;
- providing an inner housing surrounding the turbine rotor;
- providing a guide-blade structure in the inner housing surrounding the turbine rotor in circumferential direction;
- providing a hollow guide blade of the guide-blade structure, the hollow guide blade having an outer surface and a cavity;
- providing orifice conduits connecting the cavity of the hollow blade guide to the outer surface of the hollow blade guide;
- and feeding wet steam through the hollow guide blade, the wet steam flowing through the orifice conduits to the outer surface of the guide blade.
3 more elements
Dependencies are inferred from the claim text.