Siemens Aktiengesellschaft

Andreas Feldm&uuml;ller

Detlef Haje

Andreas Ulma

Ralf Kuhn

Stefan Sasse

A turbine casing includes a multilayer casing wall in which an intermediate layer in the form of a non-metallic bulk material, preferably sand, is provided between an inner layer and an outer layer, to cope with high steam states. A method of manufacturing a multilayer turbine casing includes inserting a core representing an intermediate layer into a casting mold while forming a cavity for the inner layer and/or the outer layer. The cavity is then filled with a casting material, with the core expediently remaining as the intermediate layer in the casing wall. Alternatively, first of all a U-shaped profile part is made and an intermediate space formed by the outer layer and the inner layer is filled with the bulk material.

Turbine casing and method of manufacturing a turbine casing

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.

Growing community of inventors

Bochum, Germany

Andreas Feldmüller

Growing community of inventors

Bochum, Germany

Andreas Feldm&uuml;ller

Andreas Feldmüller