Closed circuit steam cooled turbine shroud

A turbine shroud cooling cavity is partitioned to define a plurality of cooling chambers (40, 42, 44, 46) for sequentially receiving cooling steam and impingement cooling of the radially inner wall of the shoud (20). An impingement baffle (48, 50, 52, 54) is provided in each cooling chamber (40, 42,...

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Bibliographische Detailangaben
Hauptverfasser: KELLOCK, IAIN ROBERTSON, BURDGICK, STEVEN SEBASTIAN, SEXTON, BRENDAN FRANCIS
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:A turbine shroud cooling cavity is partitioned to define a plurality of cooling chambers (40, 42, 44, 46) for sequentially receiving cooling steam and impingement cooling of the radially inner wall of the shoud (20). An impingement baffle (48, 50, 52, 54) is provided in each cooling chamber (40, 42, 44, 46) for receiving the cooling media from a cooling media inlet in the case of the first chamber or from the immediately upstream chamber in the case of the second through fourth chambers and includes a plurality of impingement holes for effecting the impingement cooling of the shroud inner wall.