Internal fuel manifold having temperature reduction feature

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

Patent

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Details

F23R 3/28 (2006.01) F02C 7/22 (2006.01)

Patent

CA 2660078

A fuel manifold assembly (22) for a gas turbine engine (10) comprises an annular fuel manifold (21) and a plurality of fuel nozzles (30) circumferentially distributed about the fuel manifold (21). The fuel manifold (21) has at least one fuel conveying passage in fluid flow communication with the plurality of fuel nozzles (30) and defines at least one location susceptible to overheating between two of the plurality of fuel nozzles (30). A slot (50a, 50b, 50c) extends through the fuel manifold (21) in the susceptible location to reduce heat transfer in the fuel manifold (21) while maintaining the fuel manifold assembly (22) dynamically balanced.

L'invention concerne un ensemble collecteur de combustible (22) pour un moteur à turbine à gaz (10), l'ensemble comportant un collecteur de combustible annulaire (21) et une pluralité d'injecteurs (30) distribués de façon périphérique autour du collecteur de combustible (21). Le collecteur de combustible (21) possède au moins un passage de transport de combustible en communication d'écoulement de fluide avec la pluralité d'injecteurs (30) et définit au moins un emplacement sensible à la surchauffe entre deux parmi la pluralité d'injecteurs (30). Une fente (50a, 50b, 50c) s'étend à travers le collecteur de combustible (21) dans l'emplacement sensible pour réduire le transfert de chaleur dans le collecteur de combustible (21), tout en maintenant l'ensemble collecteur de combustible (22) en équilibre dynamique.

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