Axial-flow turbine
AssigneeAsea Brown Boveri AG
InventorsPeter Elvekjaer, Walter Schreiber
Life of this patent
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Abstract
An axial-flow turbine has at least one row of bowed guide vanes (7) and at least one row of rotor blades. The bowing of the guide vanes (7) over the vane height is selected at right angles to the chord and is directed towards the pressure side of the respectively adjacent guide vane in the peripheral direction. The guide vanes are tapered in their radial extent. Secondary losses, which occur due to the deflection of the boundary layers in the guide vanes, are reduced by this measure.
Claims5
An axial-flow turbine with at least one row of bowed guide vanes and at least one row of rotor blades, wherein the bowing of the guide vanes over the height of the vane is selected at right angles to a vane chord and wherein the guide vanes are tapered in their radial extent.
Dependencies are inferred from the claim text.