Siemens Aktiengesellschaft

Dirk Lieser

Arnd Reichert

Peter Tiemann

Micheal Strassberger

An apparatus for controlling a cooling air flow, in particular a gas turbine cooling air flow, is for the control, specific to requirement, of a cooling air flow using low-maintenance. A control fluid flow is introduced into the cooling air flow in the region of the flow duct with a flow component transverse to the flow direction of the cooling air flow through the flow duct. As such, the flow rate of the cooling air flow is adjustable as a function of control parameters of the control fluid flow and/or other parameters.

Device and method for controlling a cooling air flow of a gas turbine

The invention relates to a turbo-machine ( ) comprising a rotor ( ) that extends along a rotational axis ( ). Said rotor ( ) has a peripheral surface ( ) which is defined by the outer radial delimitation surface of the rotor ( ) and has a receiving structure ( ) as well as a first moving blade ( A) and a second moving blade ( B). Each moving blade comprises a blade footing ( A, B) and a blade platform ( A, B). The blade platform ( A) of the first moving blade ( A) and the blade platform ( B) of the second moving blade ( B) border one another, and a gap ( ) is formed between the blade platforms ( A, B) and the peripheral surface ( ). A sealing system ( ) is provided in the gap ( ) on the peripheral surface ( ).

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Kassel, Germany

Dirk Lieser