Combustor of gas turbine

A combustor of a gas turbine, the combustor comprising:

• a shell surrounding a combustion chamber;
• a liner located inside the shell and facing the combustion chamber;
• a cooling space into which compressed air flows and which is located between the shell and the liner;
• and
• a fixture by which the liner is attached to the shell, the fixture including
• a support including a shaft portion and a head portion, the shaft portion penetrating the shell, the head portion being connected to the shaft portion and supporting the liner from an inside of the shell in a radial direction,
• a spacer including a main body portion and a projecting portion, the main body portion being located between the shell and the liner, the projecting portion projecting from the main body portion toward an outside in the radial direction and penetrating the shell,
• a fixing structure attached to the shaft portion of the support at an outside of the shell in the radial direction, and
• a biasing structure that is located outside the shell in the radial direction and located inside the fixing structure in the radial direction, wherein:
• the biasing structure includes
• an elastic body,
• an upper seat located outside the elastic body in the radial direction, and
• a lower seat located inside the elastic body in the radial direction;
• the upper seat and the lower seat include respective opposing surfaces which bypass the elastic body and are opposed to each other in the radial direction;
• the projecting portion of the spacer contacts the upper seat;
• the biasing structure biases the fixing structure toward the outside in the radial direction such that the liner approaches the shell in the radial direction against the compressed air flowing into the cooling space;
• and
• when a pressure in the cooling space exceeds a predetermined pressure in a state where there is a gap between the opposing surface of the upper seat and the opposing surface of the lower seat, the liner moves toward an inside in the radial direction, the opposing surface of the upper seat and the opposing surface of the lower seat contact each other, and a gap is formed between the main body portion of the spacer and the shell.