COOLED TURBINE RIM SEAL

A rim seal assembly (70) includes an annular seal element (76) circumscribing an engine centerline or axis (8) and mounted on an annular platform (66) including a radially inwardly extending annular platform flange (68) disposed between and connected to forward and aft flanges (58, 59) at distal end...

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Bibliographische Detailangaben
Hauptverfasser:	BUSSO, GIANNI EMANUELE, WIGON, JEREMY STEPHEN, GRISSINO, ALAN SCOTT
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS CYLINDERS ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS GAS-TURBINE PLANTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PISTONS SEALINGS STEAM ENGINES THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A rim seal assembly (70) includes an annular seal element (76) circumscribing an engine centerline or axis (8) and mounted on an annular platform (66) including a radially inwardly extending annular platform flange (68) disposed between and connected to forward and aft flanges (58, 59) at distal ends (61) of forward and aft annular elements (94, 96) respectively. Annular forward and aft outer rim cavities (78, 79) radially disposed between the forward and aft annular elements (94, 96) and the platform (66) are axially separated by the platform flange (68). Cooling slots (84) extend radially across axially facing forward and aft surfaces (88, 90) of the forward and aft flanges (58, 59). The platform flange (68) and the forward and aft flanges (58, 59) are bolted together. The annular seal element (76) may include seal teeth (64) in sealing relationship with an annular seal land (62) such as in a labyrinth seal (60). The rim seal assembly (70) may be incorporated in a low pressure turbine (26) use a compressor (16) as a source of cooling air (45).