Siemens Energy Global Gmbh & Co. Kg

Ulrich Stanka

Andreas Ulma

Ralf Bell

Markus Legenbauer

Anett Bergmann

Christoph Bieniakonski

Marius Busschulte

Stephan Ernst

Bora Kocdemir

Adam Maguire

Michael Oehmichen

Daniel Ostwald

Niclas Van Der Lest

Wolfgang Braukmann

Raphael Oberlin

A turbine blade having an aerofoil, wherein the aerofoil extends along a longitudinal axis, and having a blade tip, wherein, at the blade tip, a lower V limb of an element of V-shaped cross section extends transversely with respect to the longitudinal axis from a leading edge to a trailing edge, and having an upper V limb which has an outer surface, wherein the longitudinal axis is at an angle of 80° to 100°, in particular 90°, with respect to the outer surface. A method for producing such a turbine blade having a blade tip, in which method the blade tip is produced by removal of material from a wedge-shaped shroud.

Turbine blade and method for producing a turbine blade

Provided is a method for sealing an annular gap in a turbine with a housing and a rotor, in which method a) an annular recess, which is arranged coaxially with respect to the rotor and opposite the tips of the rotor blades of a stage, is provided in the housing or in at least one element attached to the housing, b) a subdivided insert ring, which is formed such that it can be inserted into the recess in a form-fitting manner with play, is provided, c) the insert ring is inserted into the recess, more particularly in that the insert ring is pushed into the recess at least substantially in the axial direction, and d) the insert ring is fixed using securing elements in such a way that an at least substantially axially directed clamping force is applied by means of the securing elements. A turbine is also provided.

Method for sealing an annular gap in a turbine, and turbine

By applying material on only one side in the case of a revision, seal rings can be easily rebuilt and reused.

Repaired ring and method for repairing a ring which is used for sealing purposes

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Essen, Germany

Ulrich Stanka