TRANSITION PIECE OUTLET STRUCTURE ENABLING TO REDUCE THE TEMPERATURE, AND A TRANSITION PIECE, A COMBUSTOR AND A GAS TURBINE PROVIDING THE ABOVE OUTPUT STRUCTURE

摘要

A gas turbine combustor transition piece outletstructure enabling a reduction in the temperaturedifference of a flange formed at the transition pieceoutlet. A flange is formed with a cooling medium channelalong the inner circumference, cooling medium channelsalong the left and right side surfaces, and heatingmedium channels along the top and bottom surfaces. Bycooling the inner circumference or the side surfaces ofthe flange by a cooling medium or heating the top andbottom surfaces of the flange by a heating medium, thetemperature difference of the flange is reduced. Notethat as the cooling medium, it is possible to usecompressed air, low temperature steam, or fuel, while asthe heating medium, it is possible to use hightemperature steam or combustion gas.