Cooled flameholder swirl cup

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

Patent

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Details

F23R 3/28 (2006.01) F23R 3/14 (2006.01) F23R 3/20 (2006.01) F23R 3/34 (2006.01)

Patent

CA 2748883

A combustor swirl cup (36, 38) includes coaxial inner and outer swirlers (42, 44) separated by a tubular centerbody (46). The centerbody (46) includes a bypass inlet (66) surrounding the inner swirler (42) and diverges aft along a perforate inner nozzle (52) to terminate at an annular flameholder (54). An impingement ring (64) is spaced forward from the flameholder (54) in flow communication with the bypass inlet (66) for receiving cooling air therefrom to impingement cool the flameholder (54).

L'invention concerne une coupelle de tourbillonnement de chambre de combustion (36, 38) comprenant des coupelles de turbulence coaxiales intérieure et extérieure (42, 44) séparées par un corps central tubulaire (46). Le corps central (46) comprend une entrée de dérivation (66) entourant la coupelle de turbulence intérieure (42) et diverge vers l'arrière le long d'une tuyère intérieure perforée (52) pour se terminer sur un stabilisateur de flamme (54) annulaire. Une bague de contact (64) est espacée vers l'avant depuis le stabilisateur de flamme (54) en communication fluidique avec l'entrée de dérivation (66) pour recevoir l'air de refroidissement depuis celui-ci pour refroidir par contact le stabilisateur de flamme (54).

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