Gasturbinendeckband

A gas turbine engine (10) having a main casing (242), turbine blades (230) and a segmented cylindrical liner (240) surrounding the tips of the blades (230) is provided with apparatus for compensating for different radial expansions between the blades (230) and the liner (240). The apparatus comprise...

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Bibliographische Detailangaben
Hauptverfasser: MAGGS, PETER JOHN, BATH BA3 4BP, GB, LEONARD, JOHN FREDERICK, BRISTOL BS17 2AB, GB
Format: Patent
Sprache:ger
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Zusammenfassung:A gas turbine engine (10) having a main casing (242), turbine blades (230) and a segmented cylindrical liner (240) surrounding the tips of the blades (230) is provided with apparatus for compensating for different radial expansions between the blades (230) and the liner (240). The apparatus comprises a shroud structure (238), such as a platform (238) of an axially adjacent nozzle guide vane (234) and a slipper element (250) extending radially from the shroud structure (238) to the liner (240) and coupling one to the other. The slipper element (250) expands circumferentially more slowly than does the shroud structure (238). Thermal circumferential growth of the shroud structure (238) causes a radial displacement of the liner segments (24) relative to the shroud structure (238).