F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 11/00 (2006.01) F01D 9/04 (2006.01) F01D 11/10 (2006.01) F01D 25/12 (2006.01)
Patent
CA 2551016
A cooled shroud assembly (19) includes an angled slot (25) and a plurality of dilution jet openings (26). The shroud forward cavity is modified such that at least one recirculation zone (21) is produced. The angled slot (25) forces; an axial change in momentum of the hot gas flow (37) and increases radial and axial pressure variation attenuation. The cooled shroud assembly (19) isolates the shroud structure and seals from the hot flow path and a cooling flow (42) from the dilution jet openings (26) dilutes the hot gas flow. A series of recirculation zones shields the shroud carrier (33) and high pressure seals from the hot gas flow.
L'invention concerne un ensemble enveloppe refroidie comprenant une fente inclinée et une pluralité d'orifices de jets de dilution. La cavité à l'avant de l'enveloppe est modifiée de sorte qu'au moins une zone de recirculation est produite. La fente inclinée entraîne un changement axial forcé au niveau de la quantité de mouvement du flux de gaz chauds et augmente l'atténuation de variations de pression axiale et radiale. L'ensemble enveloppe refroidie isole la structure d'enveloppe ainsi que des joints d'étanchéité par rapport au circuit du flux de gaz chauds et un flux de refroidissement provenant des orifices de jets de dilution dilue le flux de gaz chauds. Une série de zones de recirculation protège le support de l'enveloppe et les joints d'étanchéité haute pression du flux de gaz chauds.
Howe William J.
Morris Mark C.
Sciacca John F.
Tiltman Alan G.
Wolfmeyer George W.
Gowling Lafleur Henderson Llp
Honeywell International Inc.
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