Structure for cooling gas turbine engine

A structure for cooling a gas turbine engine in which an open flange part encircling a fuel supply hole formed in a combustor of the gas turbine engine comprises a conical portion that enlarges in a conical shape in going toward an outside of the combustor and a flat portion that extends radially outward in a flat plate shape from an extremity of the conical portion, and a nozzle guide comprises a cylindrical portion that covers an outer periphery of a fuel nozzle for supplying fuel to the fuel supply hole and a bottom flange portion that is bent radially outward from a corner portion at an extremity of the cylindrical portion and is supported in a floating state on the flat portion,

• wherein a plurality of caps for supporting the bottom flange portion in the floating state are fixed to the flat portion, and a cooling hole for supplying air that cools the open flange part and the fuel nozzle is formed in the corner portion of the nozzle guide, and a direction of the cooling hole is inclined toward an axis of the fuel nozzle, and
• wherein the direction of the cooling hole is inclined toward the axis side in going from the outside of the combustor to an inside of the combustor when viewed in a direction orthogonal to the axis, and the direction of the cooling hole is also inclined toward one side in a circumferential direction with respect to the axis in going from the outside of the combustor to the inside of the combustor when viewed in the axis direction.