Turbomachine stage and method for detecting a sealing gap of such a turbomachine stage
AssigneeMTU Aero Engines AG
InventorsMichael Zielinski, Andreas Zeisberger, Rene Schneider
Life of this patent
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Abstract
A turbomachine stage, in particular a turbine stage or compressor stage of a gas turbine, is disclosed. The turbomachine stage has a, in particular conical, housing in which a rotor blade arrangement having a plurality of rotor blades is disposed which have an outer shroud having at least one radial sealing flange. The sealing flange has a recess arrangement having at least one radial recess in which a radial projection is disposed, in particular centrally. A sensor arrangement having at least one capacitive sensor for detecting a radial distance from a circumferential surface of the sealing flange is disposed on the housing.
Claims9
A turbomachine stage, comprising:
- a housing;
- and
- a rotor blade arrangement disposed within the housing, wherein the rotor blade arrangement has an exterior shroud band section with a sealing flange;
- wherein the sealing flange has a recess arrangement with a radial recess and a radial projection;
- wherein a sensor arrangement with a sensor is arranged on the housing, and wherein a radial clearance to a circumferential surface of the sealing flange is detectable by the sensor.
A method for determining a seal gap between a sealing flange of a rotor blade arrangement and a housing in a turbomachine stage, wherein the sealing flange has a recess arrangement with a radial recess and a radial projection and wherein a sensor arrangement with a sensor is arranged on the housing, comprising the step of:
- detecting a signal swing of the sensor arrangement as a result of the radial recess and the radial projection of the recess arrangement being detected by the sensor of the sensor arrangement.
Dependencies are inferred from the claim text.