Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Heavy Industries Limited

Takayoshi Takashima

Kentaro Tokuyama

Hiroaki Kishida

Kenji Sato

Shinji Akamatsu

Keisuke Matsuyama

A gas turbine combustor is provided with a combustor basket where combustion gas flows, the combustion gas being produced by combustion of fuel injected from a nozzle, and a first resonance device and a second resonance device mounted on an outer surface of the combustor basket. The second resonance device is disposed on a downstream side from the first resonance device in a flow of the combustion gas and damps combustion oscillation of a frequency higher than the first resonance device. The first and second resonance devices are acoustic liners each having a housing mounted to the outer surface of the combustor basket. A resonance space surrounded by the housing and the outer surface of the combustor basket communicates with an interior space of the combustor basket via a plurality of acoustic holes formed in the combustor basket.

Gas turbine combustor

A gas turbine combustor is disposed in a casing interior space of a gas turbine. A combustor basket of the combustor is formed into a cylindrical shape by abutting ends of a curved panel member and welding the ends together along a welding line. A communication tube is provided for communication between an interior space of the combustor basket and an interior space of a combustor basket of an adjacent combustor. The position of the welding line of the combustor basket coincides with a connection position for connecting the communication tube to the combustor basket. A cooling air hole is disposed in the communication tube or in the combustor basket in the vicinity of the communication tube to introduce cooling air from the casing interior spaceto the interior of the combustor basket.

Gas turbine combustor and gas turbine

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Yokohama, Japan

Takayoshi Takashima