Method and apparatus to decrease gas turbine engine...

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

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F23R 3/14 (2006.01) F01D 25/08 (2006.01) F02C 7/24 (2006.01) F23R 3/00 (2006.01) F23R 3/28 (2006.01)

Patent

CA 2451318

A mixer assembly (41) for a gas turbine engine combustor (16), includes a premixer (42), an air swirler (60) for Channeling fluid flow therethrough into said premixer, a dome plate (40) extending downstream from the air swirler, and a heat shield (180) extending downstream from at least one of the air swirler and the dome plate. The heat shield includes a downstream side (188) and an upstream side (186). At least one of the premixer and the dome plate includes at least one cooling opening (150) that is configured to receive cooling fluid for impingement cooling at least a portion of the heat shield.

Ensemble mélangeur (41) pour une chambre de combustion de turbine à gaz (16), qui comprend un système à prémélange (42), une vrille d'air (60) pour diriger l'écoulement de fluide dans ledit système à prémélange, une plaque de dôme (40) qui s'étend en aval à partir de la vrille d'air et un bouclier thermique (180) qui s'étend en aval à partir d'au moins la vrille d'air ou la plaque de dôme. Le bouclier thermique comprend une face aval (188) et une face amont (186). Au moins un des deux éléments (système à prémélange ou plaque de dôme) comprend au moins un orifice de refroidissement (150) qui est configuré pour recevoir le fluide de refroidissement en vue d'un refroidissement par impact de jet d'au moins une partie du bouclier thermique.

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