Spring seal device for combustor

F - Mech Eng,Light,Heat,Weapons – 23 – R

Patent

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Details

F23R 3/60 (2006.01) F01D 9/02 (2006.01) F01D 11/00 (2006.01) F02C 7/28 (2006.01) F16J 15/08 (2006.01)

Patent

CA 2215625

To provide a spring seal device for connecting inner tube and tail tube of combustor by which air leakage caused by aged deterioration of spring seal is prevented. The spring seal 3, 4 for connecting the inner tube 1 and the tail tube 2 of combustor is fitted at its end portion on the upstream side to outer circumference of the inner tube 1. The downstream side end portion of the spring seal 3, 4 is pinched between inner circumference of the tail tube 2 and a spring seal guide 5 fitted thereto and connects the inner tube 1 and the tail tube 2. At the time of start and stop of gas turbine, the spring seal slides in the spring seal guide 5, thereby thermal deformation is absorbed.

Une unité à joints élastiques comporte des joints élastiques reliant le cylindre interne d'une chambre de combustion à un cylindre arrière, lesdits joints ayant la capacité de ne pas se déformer avec le temps de telle sorte qu'ils ne permettent pas les fuites d'air. L'extrémité amont des joints élastiques (3, 4) qui relient le cylindre interne (1) de la chambre de combustion au cylindre arrière (2), est fixée à la partie extérieure du cylindre interne(1). L'extrémité aval des joints élastiques (3, 4) est reliée du fait qu'elle se trouve adaptée entre l'intérieur du cylindre arrière (2) et un organe de guidage du joint élastique (5) qui lui est attaché. L'allongement thermique entre le cylindre interne (1) et le cylindre arrière (2) provoqué par le démarrage et l'arrêt d'une turbine à gaz est absorbé en raison du glissement du joint élastique dans son organe de guidage (5).

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