Combustor component, combustor, gas turbine, and manufacturing method for combustor component

A combustor component, comprising:

• a cylindrical body forming a plurality of weld parts for welding, along an axial direction, circumferential end portions of a plurality of plate-like sections divided in a circumferential direction, respectively and internally forming a tubular combustion chamber;
• and
• a housing covering the cylindrical body from an outer circumferential side along the circumferential direction,
• wherein, in each of the plurality of plate-like sections, the cylindrical body forms a plurality of acoustic hole rows in the circumferential direction each in which a plurality of acoustic holes opening to a combustor are disposed in a row in the axial direction,
• wherein the housing covers the plurality of acoustic hole rows, as well as covers a part of a corresponding one of the plurality of plate-like sections and a part of a corresponding one of the plurality of weld parts, and defines an acoustic damping space for damping a combustion oscillation in communication with the combustion chamber via the acoustic hole rows, and wherein, in the part of the corresponding one of the plurality of weld parts covered with the housing, a plurality of through holes are formed along the axial direction.

A manufacturing method for a combustor component, the method comprising:

• a step of forming a cylindrical body internally including a combustion chamber, by joining a plurality of sections via a weld part;
• a step of forming a plurality of through holes opening to the combustion chamber in the weld part;
• and
• a step of disposing a housing on an outer circumferential side of the cylindrical body to cover a part of the weld part, the housing defining an acoustic damping space communicating with the combustion chamber via at least one of the through holes,
• wherein the weld part includes a first region covered with the housing and a second region positioned outside the housing, the plurality of through holes being formed in the first region at a higher density than in the second region.