Aft frame and method for cooling aft frame

• Main Authors: Leach, David, McMahan, Kevin Weston, Cihlar, David William, Melton, Patrick Benedict
• Format: Patent
• Language: English; French; German
• Published: 14.06.2017
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBUSTION APPARATUS; COMBUSTION ENGINES; COMBUSTION PROCESSES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; ENGINE PLANTS IN GENERAL; GAS-TURBINE PLANTS; GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS; INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; WEAPONS

An aft frame (50) and a method for cooling an aft frame (50) are disclosed. In one embodiment, an aft frame (50) for a transition piece (26) in a combustor (16) is disclosed. The combustor (16) includes the transition piece (26) and an impingement sleeve (34) at least partially defining a flow path (36) therebetween. The aft frame (50) includes a body (60) and a generally radially extending cooling passage (70) defined in the body (60), the cooling passage (70) comprising a first end (72) configured to accept a coolant (52). The aft frame (50) further includes an exhaust passage (80) defined in the body (60), the exhaust passage (80) including a first end (82) in communication with the cooling passage (70) and a second end (84) configured for communication with the flow path (36) for flowing the coolant (52) therethrough.