Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Power, Ltd.

Kuniomi Hirano

Shingo Sato

Kenta Taniguchi

Yoshikazu Matsumura

Shin Kato

A combustor is provided with a combustion liner () in which a combustion gas flows through the inner peripheral side and a plurality of through-holes () are formed, and a sound attenuator () having a space-forming member () configured to form a space (S) connected to the plurality of through-holes () at the outer peripheral side of the combustion liner (). The space-forming member has a main body having an opening configured to bring an outside and the space in communication with each other, and a lid joined to an outer surface of the main body via a welded portion and configured to protrude outward and close the opening.

Combustor, gas turbine provided with same, and method of repairing combustor

A combustor is provided with a combustion liner () in which a combustion gas flows through the inner peripheral side and a plurality of through-holes () are formed, and a sound attenuator () having a space-forming member () configured to form a space (S) connected to the plurality of through-holes () at the outer peripheral side of the combustion liner (). A method of repairing a combustor involves executing: an opening step of opening a portion of the space-forming member () in contact with the outside and bringing the outside and the space (S) in communication with each other; a cylinder repair step of repairing the combustion liner (); a foreign substance removal step of removing foreign substances in the space (S) from the opening () opened in the opening step to the outside, after the cylinder repair step; and a closing step of closing the opening () using a lid (), after the foreign substance removal step.

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Yokohama, Japan

Kuniomi Hirano