Siemens Aktiengesellschaft

Ralf Kuhn

Andreas Ulma

Max Wiesenberger

Andreas Feldm&uuml;ller

Stefan Sasse

In a machine having a shaft with a shaft axis, an outer region, and a shaft seal, a component is provided for the shaft seal. The component has a cast part formed of a first metallic material directed along the shaft axis and has an inner wall shaped, at least in regions, in a circumferential direction relative to the shaft axis, and an outer wall directed towards the outer region. A fluid guide is disposed and formed in the cast part and runs in the circumferential direction, at least in regions, and opens into the inner wall. At least one fluid conduit formed of a second metallic material fluidically connects the inner wall to the outer region. The fluid conduit is also fluidically connected to the fluid guide.

Housing for a turbomachine

A turbine shaft for a steam turbine, in particular having a high-pressure and an intermediate-pressure turbine section. The turbine shaft has in its interior a cooling line for passing cooling steam. The cooling line is connected, on the one hand, to an outflow line and, on the other hand, to an inflow line. In this way, steam cooling of the turbine shaft can be achieved by feeding steam from the high-pressure turbine section via the inflow line to the intermediate-pressure turbine section through the outflow line. The invention also relates to a method of cooling a turbine shaft of a steam turbine.

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Düsseldorf, Germany

Ralf Kuhn