Gas turbine combustor transition piece outlet structure, transition piece, combustor and gas turbine

摘要

A gas turbine combustor transition piece outlet structure enabling a reduction in the temperature difference of a flange formed at the transition piece (122) outlet. A flange (2) is formed with a cooling medium channel (22) along the inner circumference, cooling medium channels (23) along the left and right side surfaces, and heating medium channels (24) along the top and bottom surfaces. By cooling the inner circumference or the side surfaces of the flange (2) by a cooling medium or heating the top and bottom surfaces of the flange (2) by a heating medium, the temperature difference of the flange (2) is reduced. Note that as the cooling medium, it is possible to use compressed air, low temperature steam, or fuel, while as the heating medium, it is possible to use high temperature steam or combustion gas.