GAS TURBINE

摘要

A gas turbine enabling an improvement in the appearance of a combustion oscillation reducing device disposed on a tail pipe of a combustor. A combustion oscillation reducing device (34) is disposed on a tail pipe (32) of a combustor to form a gas space (S) and causes the gas space (S) and the interior of the tail pipe (32) to communicate with each other via ventholes (343). The combustion oscillation reducing device (34) includes a first member (341) and a second member (342). The first member has a cross-sectional substantially U-shape formed by press work and disposed at the outer periphery of the tail pipe (32) with an opening of the cross-sectional substantially U-shape facing toward the tail pipe (32). The second member closes the opening of the cross-sectional substantially U-shape of the first member (341) to form the gas space (S) with the first member (341) and includes the ventholes (343). When the outer diameter of the tail pipe (32) changes along the axial direction of the tail pipe (32) as viewed in radial cross-section of the tail pipe (32), distances (d1, d2) from an axis (L) of the tail pipe (32) to bent portions of the cross-sectional substantially U-shape of the first member (341) are set to an almost constant value.