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US 9,869,197 B2Granted
Rotor for a steam turbine
AssigneeSiemens Aktiengesellschaft
InventorJorg Devries
Life of this patent
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Abstract
A turbomachine is provided, wherein the rotor comprises a planetary gear on which low-pressure end stage blades are arranged, wherein the planetary gear is designed in such a way that the frequency of the rotating blades is lower than the frequency of the rotor.
Claims9
A rotor for a turbomachine having a planetary gearset comprising
- a shaft and a crown wheel which is arranged about the shaft and adapted to be arranged in a rotationally fixed manner,
- wherein the crown wheel has internal teeth which interact with multiple internal planet gears,
- a planet disk which is arranged about the shaft and on which the planet gears are rotatably arranged,
- wherein the shaft has a sun gear which interacts with the planet gears and rotor blades which are arranged on the planet disk,
- wherein rotor blade stages formed of further rotor blades are arranged fixedly on the rotor, and
- wherein the planet disk is sealed with respect to the shaft.
3 more elements
An apparatus, comprising:
- a rotor shaft;
- a first stage of a turbine comprising further rotor blades secured to the rotor shaft;
- a planetary gearset comprising:
- a crown wheel configured to be fixed against rotational movement relative to the rotor shaft;
- internal planet gears;
- a planet disk;
- and a sun gear secured to the rotor shaft;
- and
- a second stage of the turbine comprising rotor blades secured to the planet disk;
- wherein the planetary gearset is configured to cause the rotor blades to rotate about the rotor shaft at a different speed than do the further rotor blades.
7 more elements
Dependencies are inferred from the claim text.