Sealing device, integrally bladed rotor basic body, and turbomachine
AssigneeMTU Aero Engines AG
InventorsFrank Stiehler, Manuel Hein
Life of this patent
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Abstract
A sealing device for an integrally bladed rotor basic body of a turbomachine to suppress a gas exchange between a hot gas stream and a cooling air stream in the radial direction in contact areas of adjacent moving blades, including a plurality of sealing elements activatable by centrifugal force, which may be situated in the area of channels which extend from a high-pressure side to a low-pressure side and are peripherally delimited by the moving blades, an integrally bladed rotor basic body having such a sealing device, and a turbomachine having such an integrally bladed rotor basic body.
Claims13
A sealing device for an integrally bladed rotor basic body of a turbomachine for suppressing a gas exchange between a hot gas stream and a cooling air stream in a radial direction in lateral contact areas of adjacent moving blades, the sealing device comprising:
- a plurality of sealing elements activatable by centrifugal force and situatable in an area of channels extending from a high-pressure side to a low-pressure side and peripherally delimited by the moving blades;
- and
- support bodies positioned within the channels;
- the sealing elements each having at least one root section received loosely, so as to be movable in a radial direction, in receptacles of the support bodies;
- the sealing elements each having an open profile.
An integrally bladed rotor basic body for a turbomachine comprising:
- a plurality of moving blades;
- and
- a sealing device for an integrally bladed rotor basic body of a turbomachine for suppressing a gas exchange between a hot gas stream and a cooling air stream in a radial direction in lateral contact areas of adjacent moving blades, the sealing device comprising:
- a plurality of sealing elements activatable by centrifugal force and situatable in an area of channels extending from a high-pressure side to a low-pressure side and peripherally delimited by the moving blades;
- wherein the sealing elements are each accommodated in a pocket formed by opposing depressions of adjacent moving blades and extending parallel to the channel axis;
- wherein the pockets each have a radial internal opening and a radial external base;
- wherein the sealing elements are secured against falling out of the pockets by a securing device in the area of the openings;
- and wherein the securing device has a securing element extending in the peripheral direction as an axial stop for the sealing elements and a clamping element extending in the peripheral direction and fixing the securing element.
Dependencies are inferred from the claim text.