F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
F16J 15/54 (2006.01) F01D 11/00 (2006.01) F02C 7/28 (2006.01) F16J 15/32 (2006.01) F16J 15/44 (2006.01)
Patent
CA 2372256
An axial flow turbine is provided with retractable packing and brush seals between stages. The retractable packing is provided with separate packing segments which form a ring when closed during normal operation and expand to a larger clearance during start-up and shut-down. A brush seal segment is provided on each packing segment, such that when segments are closed during normal operation, the brush seal likewise forms a ring. The ends of the packing segments are cut along radii extending from the central shaft, and the ends of the brush seal segments are canted so as not to be parallel with the ends of the packing segments in which they lie.
L'invention concerne une turbine à écoulement axial possédant une garniture rétractable et des joints à brosse entre les étages. Cette garniture rétractable est composée de segments séparés constituant un anneau quand ils sont fermés en fonctionnement normal et s'ouvrant afin d'agrandir l'anneau pendant le démarrage et l'arrêt de la turbine. Chaque segment de garniture possède un segment de joint à brosse, de sorte que ces derniers constituent également un anneau en position de fermeture en fonctionnement normal. Les extrémités des segments de garniture sont découpées le long de rayons s'étendant depuis l'arbre central et les extrémités des segments de joint à brosse sont découpées en biseau, de façon à ne pas être parallèles aux extrémités de leurs segments de garniture associés.
Catlow William G.
Dalton Patrick S.
Dalton William S.
Sulda Eric
Smart & Biggar
Turbocare Inc.
LandOfFree
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