Stator rim for a turbine engine
AssigneeGeneral Electric Company
InventorsJonathan Russell Ratzlaff, Julius John Montgomery, Michael Thomas Hogan
Life of this patent
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Abstract
A stator rim structure for a gas turbine engine comprises a stator having an end wall and a discourager defining a channel therebetween. The end wall is adjacent to a hot gas flow and the discourager is adjacent to a purge flow. A rotor has an angel wing extending into the channel. At least one supply passage is disposed within the stator and extends through the discourager and at least one aperture fluidly couples the supply passage with the channel. A flow of cooling air is fed from the supply passage into the aperture and into the channel to form a fluidic dam discouraging ingestion of the hot gas flow.
Claims16
A structure for a gas turbine engine, the structure comprising:
- a stator having an end wall and a discourager defining a channel therebetween with the end wall adjacent to a hot gas flow and the discourager adjacent to a purge flow;
- a rotor having an angel wing extending into the channel;
- at least one supply passage disposed within the stator and extending through the discourager;
- and
- at least one aperture fluidly coupling the at least one supply passage with the channel;
- wherein a flow of cooling air fed from the at least one supply passage to the at least one supply aperture and into the channel forms a fluidic dam between the hot gas flow and the purge flow.
A method of minimizing hot gas ingestion within a gas turbine engine, the engine comprising a stator having an end wall and a discourager, defining a channel therebetween, with the end wall adjacent to a hot gas flow and the discourager adjacent to a purge flow, with a rotor including an angel wing disposed in the channel, the method comprising:
- injecting cooling air from at least one supply passage disposed within the stator and extending the discourager through at least one aperture in the discourager fluidly coupling the at least one supply passage with the channel;
- wherein a flow of cooling air fed from the at least one supply passage to the at least one aperture and into the channel forms a fluidic dam between the hot gas flow and the purge flow.
Dependencies are inferred from the claim text.