Rotor shaft for a turbomachine

A rotor shaft 100 adapted to rotate about a rotor axis 110 thereof. The rotor shaft 100 includes a rotor cavity 120 configured concentrically to the rotor axis 110 inside the rotor shaft 100. The rotor shaft 100 further includes a plurality of cooling bores 130 extending radially outward from the ro...

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Bibliographic Details
Main Authors ECKHARDT, DANIEL, RIAZANTSEV, SERGEI, HOLZHAEUSER, STEFFEN, WINGE, TORSTEN
Format Patent
LanguageEnglish
French
German
Published 18.02.2015
Subjects
BLASTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
STEAM ENGINES
WEAPONS
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Summary:A rotor shaft 100 adapted to rotate about a rotor axis 110 thereof. The rotor shaft 100 includes a rotor cavity 120 configured concentrically to the rotor axis 110 inside the rotor shaft 100. The rotor shaft 100 further includes a plurality of cooling bores 130 extending radially outward from the rotor cavity 120 to feed cooling air into an internal cooling system in a blade. Each cooling bore 130 includes a bore inlet portion 132 and a distal bore outlet portion 134. The respective bore inlet portion 132 ends in a plateau (124), projecting above the outer circumference contour (122) of the rotor cavity (120). Thus, cooling bore inlets (132) are shifted to a low stress area and the lifetime of the rotor is improved.
Bibliography:Application Number: EP20140178096