TRANSITION PIECE, COMBUSTOR PROVIDED WITH SAME, AND GAS TURBINE PROVIDED WITH COMBUSTOR

摘要

In a transition piece (20) are formed a plurality of cooling passages (35) extending in an axial direction (Da) and aligned in a circumferential direction (Dc) and the axial direction (Da). One or more downstream-side passages (43, 44) are formed in a downstream-side region (Rd) within a partial circumferential region (Rc). One or more upstream-side passages (41, 42) are formed in an upstream-side region (Ru) of the circumferential region (Rc). The total cross-sectional area per unit circumferential length in the one or more downstream-side passages (43, 44) is greater than the total cross-sectional area per unit circumferential length in the one or more upstream-side passages (41, 42).