Gas turbine engine with purge air pump and guide

A pump/flow guide is positioned in a gas turbine engine and attached to a transition duct to face a turbine disk. The pump/flow guide provides a smooth path for guiding purge flow to resist the ingestion of hot gas. One leg of the pump/flow guide extends radially outwardly and contacts the radially...

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Bibliographic Details
Main Authors PAOLILLO ROGER E, MOORE CHRISTOPHER W, CHRISIKOS JAMES P
Format Patent
LanguageEnglish
Published 01.09.2009
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Summary:A pump/flow guide is positioned in a gas turbine engine and attached to a transition duct to face a turbine disk. The pump/flow guide provides a smooth path for guiding purge flow to resist the ingestion of hot gas. One leg of the pump/flow guide extends radially outwardly and contacts the radially inner section of the transition duct that forms a "fish mouth." Spaced tabs on the pump/flow guide receive bolts to secure the pump/flow guide to the transition duct. The pump/flow guide thus provides a relatively smooth flow passage for purge gas flow.
Bibliography:Application Number: US20050159686