Combustor component, combustor including the combustor component, and gas turbine including the combustor

A component of a combustor for combusting fuel to produce a combustion gas, comprising:

• a combustion cylinder forming a passage for the combustion gas;
• a first acoustic device which internally includes a first cavity communicating with the passage via a first through hole formed in the combustion cylinder;
• a second acoustic device which is located on a radially outer side of the first acoustic device so as to cover the first acoustic device, and internally includes a second cavity communicating with the passage via a second through hole formed in the combustion cylinder;
• and
• a first communication passage causing the first cavity and an outer space, which is a space outside of the combustion cylinder and the combustor component, to communicate with each other without via the first through hole and the second cavity,
• wherein the first acoustic device includes a first housing defining the first cavity,
• wherein the first communication passage includes an internal passage which is disposed in a wall member including at least the first housing, and
• wherein the internal passage extends along an axial direction of the combustion cylinder, passes through a radially outer side of another acoustic device located between the combustion cylinder and the second cavity in a radial direction, and opens to the outer space opposite to the first acoustic device across the another acoustic device.

A combustor component of a combustor for combusting fuel to produce a combustion gas, comprising:

• a combustion cylinder forming a passage for the combustion gas;
• a first acoustic device which internally includes a first cavity communicating with the passage via a first through hole formed in the combustion cylinder;
• a second acoustic device which is located on a radially outer side of the first acoustic device so as to cover the first acoustic device, and internally includes a second cavity communicating with the passage via a second through hole formed in the combustion cylinder;
• a first communication passage causing the first cavity and an outer space, which is a space outside of the combustion cylinder and the combustor component, to communicate with each other without via the first through hole and the second cavity;
• a third acoustic device which is located on a radially outer side of the second acoustic device so as to cover the second acoustic device, and internally includes a third cavity communicating with the passage via a third through hole formed in the combustion cylinder;
• and
• a second communication passage causing the second cavity and the outer space of the combustion cylinder to communicate with each other without via the second through hole and the third cavity.