Siemens Aktiengesellschaft

Volker Simon

Ralf Bell

Ingo Stephan

Ulrich Capelle

Wilfried Ulm

Mikhail Simkine

Jan-Erik M&uuml;hle

Edwin Gobrecht

Heinrich Oeynhausen

Armin Drosdziok

Joe Hannon

Laurence Crane

Karl-Heinrich M&uuml;ller

A novel blade configuration does not exceed the permitted stresses for particular loads, especially as a result of centrifugal forces and which at the same time, allows the turbomachine to function with a high degree of efficiency. To this end, a moving blade for the turbomachine contains at least partially a cellular material, especially a foamed metal. The cellular material can be provided e.g. in the hollowed-out part of the moving blade.

Moving blade for a turbomachine and turbomachine

A turbo machine, especially a steam turbine, has a main axis, an inner housing, an outer housing, a top region, and a bottom region. Between the outer housing and the inner housing a radial gap is formed, which has a narrow part in the bottom region.

Turbo machine with an inner housing and an outer housing

A steam turbine has a turbine shaft directed along a turbine axis. A plurality of turbine stages, each include a guide-blade structure and a moving-blade configuration located axially downstream of the guide-blade structure. The guide-blade structure and the moving-blade configuration are provided along the turbine shaft. Each stage has an average reaction degree achievable between 5% and 70%. The reaction degree of at least two turbine stages is of different values.

Steam turbine

A steam turbine has a high-pressure turbine section and a medium-pressure turbine section fluidically connected to the high-pressure turbine section. The high-pressure turbine section is a chamber configuration and the medium-pressure turbine section is a drum configuration. Alternatively, the high-pressure turbine section is a drum configuration and the medium-pressure turbine section is a chamber configuration. Alternatively, or additionally, the high-pressure turbine section is a double-flow configuration and the medium-pressure turbine section is a double-flow configuration.

The invention relates to a steam turbine (,) which has a flow duct (,) with a wall (,). Blading (,) is arranged in blading rings (,) in the flow duct (,). The wall (,) of the flow duct (,) has a grooved structure (,) which purposefully influences the flow of an active fluid (,) through the flow duct (,). In particular, a spacing surface (,) with a grooved structure (,) is located between each two blades or vanes (,) of a blading ring (,). The invention also relates to a blade or vane for a steam turbine.

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Ruhr, Germany

Volker Simon