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US 8,893,508 B2Granted
Systems and methods for directing cooling flow into the surge plenum of an exhaust eductor cooling system
AssigneeHoneywell International Inc.
InventorsYogendra Yogi Sheoran, Bruce Dan Bouldin, John Zimmerer, Mario Hidalgo
Life of this patent
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Abstract
An eductor assembly comprises a primary nozzle configured to discharge turbine exhaust gas therefrom. The eductor assembly further comprises a cooler plenum having an inlet and an outlet and a surge plenum at least partially surrounding the cooler plenum and the nozzle, the surge plenum for conducting a surge flow. Cooling air flows through a vent between the cooler plenum and the surge plenum when there is no surge flow.
Claims12
An eductor assembly, comprising:
- a primary nozzle configured to discharge turbine exhaust gas therefrom;
- a cooler plenum having an inlet and an outlet;
- a surge plenum at least partially surrounding the cooler plenum and the nozzle, the surge plenum for conducting a surge flow;
- a vent between the cooler plenum and the surge plenum through which air flows from the cooler plenum into the surge plenum when there is no surge flow;
- and
- a tube coupled to the vent and extending into the surge plenum, the tube extending substantially perpendicularly from a first wall separating the surge plenum and the cooler plenum, the tube comprising an obstruction coupled to an end of the tube and extending into the cooler plenum for deflecting gas into the tube.
3 more elements
An eductor assembly according to claim further comprising:
- a plurality of openings through the first wall and spaced around the cooler plenum;
- a plurality of tubes, each tube coupled to receive cooler air from the cooler plenum and direct it into the surge plenum;
- and
- a plurality of obstructions, each obstruction coupled to one of the plurality of tubes for deflecting cooler air into its associated tube.
1 more element
An eductor assembly comprising:
- a primary nozzle configured to discharge turbine exhaust therefrom;
- a cooler plenum;
- a surge plenum at least partially surrounding the cooler plenum and the nozzle, the cooler plenum for periodically conducting a surge flow;
- a wall separating the cooler plenum and the surge plenum;
- a passive valve in the wall for conducting cooler air from the cooler plenum to the surge plenum when there is no surge flow, the passive valve comprising a tube extending from the wall into the surge plenum;
- and
- a diverter coupled to the tube and extending into the cooler plenum for diverting air flowing in the cooler plenum through the tube.
4 more elements
Dependencies are inferred from the claim text.