Gas turbine combustion cylinder, gas turbine combustor, and gas turbine

A gas turbine combustion cylinder comprising:

• a combustion cylinder;
• a plurality of fuel nozzles disposed at an interval in a circumferential direction of the combustion cylinder on a side portion of the combustion cylinder;
• and
• a windbreak cover disposed to enclose at least one of the plurality of fuel nozzles,
• wherein the windbreak cover includes a top plate extending in the circumferential direction and a circumferential side wall that connects an end portion of the top plate in the circumferential direction and the combustion cylinder, the windbreak cover being formed by the top plate and the circumferential side wall and having a suction opening portion for taking in combustion air, and
• a dimension in a radial direction of the combustion cylinder in the suction opening portion is smaller than a dimension in the circumferential direction in the suction opening portion in at least a partial region in the circumferential direction.