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US 2014/0212269 A1Published application
Cooling for a fluid flow machine
AssigneeSiemens Aktiengesellschaft
InventorsChristoph Kastner, Rudolf Potter
Life of this patent
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Abstract
A fluid flow machine, in particular a steam turbine, is provided having a piston-equalizing line which conducts a vapour from a fresh vapour region of a second flow duct to a thrust-equalizing piston, wherein the surface of the piston-equalizing line is enlarged, and wherein the inner surface of the piston-equalizing line is enlarged.
Claims9
-10. (canceled)
A turbomachine comprising
- a rotor mounted rotatably about an axis of rotation, an inner housing arranged about the rotor and an outer housing arranged about the inner housing,
- wherein a first flow region and a second flow region, formed in the opposite flow direction to the first flow region, are arranged between the rotor and the inner housing,
- wherein the rotor has a thrust-equalizing piston,
- wherein a piston-equalizing line is formed for introducing steam between the inner housing and the thrust-equalizing piston,
- wherein the piston-equalizing line outer surface is embodied to be enlarged with respect to a pipe outer surface and/or the piston-equalizing line inner surface is embodied to be enlarged with respect to a pipe inner surface,
- wherein outer cooling ribs are arranged on the piston-equalizing line outer surface, and
- wherein the outer cooling ribs are arranged in series in the direction of the piston-equalizing line.
4 more elements
Dependencies are inferred from the claim text.