Patent ID: 7096668

Claim:
An interface region between a combustion liner and a transition duct having improved cooling, said interface region comprising: a transition duct having an inlet ring, said inlet ring having a first forward end, a first aft end, a first inner wall, a first outer wall, a first plurality of cooling holes extending from said first outer wall to said first inner wall, said first cooling holes proximate said first aft end of said inlet ring, and a sealing ring fixed to said first inner wall proximate said first aft end, said sealing ring having a second plurality of cooling holes; a combustion liner having a second forward end, a second aft end, a plurality of openings proximate said second forward end for a plurality of fuel injectors, a second inner wall, a second outer wall, a deflector ring fixed to said second inner wall, and at least one outer seal, said at least one outer seal having a plurality of openings, said outer seal fixed to said combustion liner along said second outer wall at an attachment region proximate said second aft end, said combustion liner telescopically received within said transition duct such that said at least one outer seal is in contact with said first inner wall of said transition duct inlet ring; wherein said first plurality of cooling holes inject a cooling fluid onto said attachment region of said second outer wall of said combustion liner proximate said second aft end.