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US 6,345,952 B1Granted
Steam turbine
AssigneeSiemens Aktiengesellschaft
InventorsHeinrich Oeynhausen, Wilfried Ulm, Ralf Bell, Ulrich Capelle, Jan-Erik Mühle, Mikhail Simkine, Ingo Stephan, Volker Simon
Life of this patent
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Abstract
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.
Claims21
A steam turbine, consisting of:
- a turbine axis;
- a turbine shaft directed along said turbine axis;
- a steam inlet;
- a steam outlet fluidically connected to said steam inlet;
- a plurality of turbine stages between said steam inlet and said steam outlet, each of said plurality of turbine stages having a reaction degree, a guide-blade structure and a moving-blade configuration, said guide-blade structure and said moving-blade configuration provided along said turbine shaft, said moving-blade configuration located axially downstream of said guide-blade structure, at least half of said plurality of turbine stages having an average reaction degree below 0.5, and at least two of said plurality of turbine stages having different average reaction degrees.
2 more elements
Dependencies are inferred from the claim text.