Asea Brown Boveri Ag

Alstom (switzerland) Ltd

Conor Fitzsimons

Bernhard Weigand

Hans Wettstein

Klaus Semmler

Wolfgang Kappis

At least one adjustable restricting point is introduced into the cooling air path of a coolable gas turbine component, and means which make it possible to change this restricting point during the operation of the machine are provided. In this way it is possible to adapt the amount of cooling air fed to the component continuously to the specific operating conditions.

Cooled gas turbine component with adjustable cooling

Turbomachine, in particular a compressor of a gas turbine, having rotor blades (,) and guide vanes (,), in which individual or all guide vanes (,) are configured as cooled vanes. The cooled vanes (,) have air guidance ducts (,) which emerge into outlet openings (,) in the region of the vane tips (,). Cooling air (K) is ejected through the outlet openings (,) and impinges at high velocity onto a rotor shaft (,). The cooling effect which can be achieved by this means is optimal and, in addition, leads to a raising of the compressor efficiency and the surge line.

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Baden-Baden, Germany

Conor Fitzsimons