Combustor with additively manufactured combustor body having cooling path with inlet at aft frame

An additively manufactured (AM) combustor body having a one-piece member including:

• a transition portion of a combustion liner, wherein the transition portion includes a forward end and an aft end opposite the forward end;
• a flow sleeve around the transition portion and separated from the transition portion by a sleeve gap that defines at least one cooling passage between the flow sleeve and the transition portion;
• an aft frame including an inner end integral with the combustion liner and an outer end distal from the inner end;
• a plurality of circumferentially spaced ribs extending forward from the inner end of the aft frame on an exterior surface of at least part of the transition portion and extending radially from the at least part of the transition portion to the flow sleeve, wherein the ribs of the plurality of circumferentially spaced ribs are integral with the flow sleeve;
• a circumferentially extending passage defined partially within the inner end of the aft frame, by the flow sleeve, and by the transition portion, wherein the plurality of circumferentially spaced ribs define a plurality of cooling passages within the circumferentially extending passage;
• wherein the flow sleeve has an aft end that curves away from the transition portion to define a forward end of a circumferential inlet of the circumferentially extending passage;
• and
• wherein the AM combustor body further includes a plurality of parallel, metallurgically bonded metal layers.

A gas turbine (GT) system, comprising:

• a compressor section;
• a combustion section operatively coupled to the compressor section;
• and
• a turbine section operatively coupled to the combustion section,
• wherein the combustion section includes at least one combustor including:
• an additively manufactured (AM) combustor body including a one-piece member including:
• a transition portion of a combustion liner;
• an aft frame at an aft end of the transition portion, the aft frame including an inner end integral with the transition portion, an outer end distal from the inner end, and a circumferentially extending passage partially defined within the inner end;
• a plurality of circumferentially spaced ribs extending forward from the inner end of the aft frame on an exterior surface of the transition portion of the combustion liner;
• and
• a flow sleeve integral with the plurality of circumferentially spaced ribs and further defining the circumferentially extending passage with the transition portion;
• wherein the flow sleeve includes an aft end curving at least 90 degrees away from the exterior surface of the transition portion to define a circumferential inlet between the aft end of the flow sleeve and the outer end of the aft frame;
• and
• wherein the AM combustor body further includes a plurality of parallel, metallurgically bonded metal layers.