GAS TURBINE ENGINE ANNULAR COMBUSTION CHAMBER FRONT DEVICE Russian patent published in 2008 - IPC F23R3/16 

FIELD: engines and pumps.

SUBSTANCE: gas turbine engine annular combustion chamber front device incorporates inner branch pipes, outer branch pipes aligned with the latter, vane air swirlers arranged at the inner branch pipe inlet and fuel nozzles fitted into the swirler sleeves. The inner branch pipe cross section has an inlet cylindrical section and an outlet trapezoid section with the outer ribbed surface. The outer branch pipe and the inner branch pipe surfaces form the spaces constricted by adjacent ribs. The outer branch pipes are furnished with the holes, at least a part of which representing slots arranged with a spacing of 2. to 4.0 of the slot hole length. The slot hole area exceeds the total area of holes arranged between the aforesaid slot holes.

EFFECT: higher cooling efficiency, preventing burn formation on annular combustion chamber front device, increased rigidity of this device.

4 cl, 4 dwg, 3 ex