Thermal seal for a gas turbine spacer disc
AssigneeGeneral Electric Company
InventorDiether Carreno
Life of this patent
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Abstract
The present invention provides for the removable attachment of sealing segments about the entire circumferential periphery of the rotor spacer discs. To this end, the conventional annular grooves provided in the peripheral surface of each spacer disc (as part of the high/low sealing surface configuration) are reconfigured as dovetail grooves which are designed to receive complimentary or mating portions of the sealing segments. In other words, each adjacent annular groove receives a plurality of sealing segments, the totality of which substantially prevent or at least minimize the impingement of hot gases directly on the peripheral surface of the spacer disc.
Claims20
In an annular spacer disc mounted between and for rotation with a pair of rotor discs in a gas turbine, the spacer disc having an outer circumferential, peripheral surface, the improvement comprising;
- a plurality of laterally aligned, annular grooves formed in said peripheral surface, and a plurality of sealing members detachably secured within each of said annular grooves, said sealing members creating a thermal seal by preventing direct hot gas impingement on at least a substantial portion of said peripheral surface.
A spacer disc for use in a gas turbine comprising:
- a disc body having an annular peripheral surface substantially parallel to an axis of rotation of said disc;
- a plurality of substantially parallel grooves formed in said peripheral surface and extending about the circumference thereof;
- a plurality of sealing segments removably secured within each of said grooves, such that substantially all of said peripheral surface is covered by said plurality of removable sealing segments.
A spacer disc for mounting between adjacent rotor discs of a gas turbine, said disc having an annular peripheral surface provided with a plurality of adjacent, annular grooves, each of said grooves provided with a corresponding removable and replaceable means for creating a thermal barrier for preventing direct impingement of hot gases on said peripheral surface and for inhibiting axial flow of gases along said peripheral surface.
Dependencies are inferred from the claim text.