F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
F02C 7/18 (2006.01) F01D 25/12 (2006.01) F02C 7/32 (2006.01) F16K 15/03 (2006.01) F16K 17/30 (2006.01) F24F 11/047 (2006.01) F24F 13/14 (2006.01)
Patent
CA 2509929
A fluid flow actuated valve for controlling the fluid flow in a cooling conduit in an aircraft gas turbine engine, comprises a support structure adapted to be mounted within the conduit and at least one flap member pivotally mounted to the support structure. The at least one flap member is pivotable between a first position for a minimum fluid flow and a second position for a maximum fluid flow. A torsion spring is attached to the at least one flap member to urge the same to pivot against a fluid pressure differential, from the first position to the second position when the fluid pressure differential is smaller than a predetermined level.
Selon l'invention, un clapet actionné par un flux de liquide permet de réguler l'écoulement de liquide dans une conduite de refroidissement d'une turbine d'aéronef. Ledit clapet comprend une structure de support élaborée pour être montée à l'intérieur de la conduite et au moins un élément de battant monté pivotant à la structure de support. L'élément de battant peut pivoter entre une première position permettant un écoulement de liquide minimal et une seconde position permettant un écoulement de liquide maximal. Un ressort de torsion est fixé sur l'élément de battant pour le forcer à pivoter contre une différence de pression du liquide, de la première position à la seconde position, lorsque ladite différence de pression du liquide est inférieure à un niveau prédéterminé.
Aitchison Paul Archibald
Germain Patrick David
Smith Henry
Norton Rose Or S.e.n.c.r.l.,s.r.l./llp
Pratt & Whitney Canada Corp.
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