Tubular body for combustor, combustor, and gas turbine

A tubular body for a combustor, in which a combustion gas generated by combustion of fuel is flowable, the tubular body comprising:

• a tube body extending along an axis;
• a first cooling passage that is formed in an upstream-side region located on an upstream side of the tube body in a wall portion of the tube body, that has a supply port that is open to an outer peripheral surface of the tube body, and that is capable of cooling the upstream-side region by receiving a first cooling fluid introduced from a space outside the tube body through the supply port;
• a second cooling passage that is formed in a downstream-side region located on a downstream side of the tube body with respect to the upstream-side region in the wall portion, that is capable of cooling the downstream-side region by receiving supply of a second cooling fluid different from the first cooling fluid, and that has a discharge port that is open to the outer peripheral surface at a position different from the supply port along the axis and through which the second cooling fluid is dischargeable to the space outside the tube body;
• and
• a first wall that is disposed between the supply port and the discharge port and that extends in a circumferential direction of the tube body along the outer peripheral surface,
• wherein the first wall includes a first wall portion that has a base end portion connected to the outer peripheral surface and extending in a direction away from the outer peripheral surface and that extends in the circumferential direction, and a first discontinuous portion in which the first wall portion is discontinuous in the circumferential direction.