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Combustion burner, combustor, and gas turbine having a swirl vane with opposite directed surfaces
Combustion burner, combustor, and gas turbine having a swirl vane with opposite directed surfaces
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机译:燃烧器,燃烧器和燃气轮机,其涡流叶片具有相反的定向表面
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摘要
A combustion burner includes a nozzle and a swirl vane disposed in an axial flow path extending along an axial direction of the nozzle. The swirl vane includes a tip portion for swirling gas, the gas flowing through a radially-outer region of the axial flow path, and a root portion disposed on an inner side in a radial direction of the nozzle, the root portion having a cutout on a side of a trailing edge. The radially-outer region and a radially-inner region of the axial flow path communicate with each other, at least in a range in the axial direction in which the swirl vane is disposed. The swirl vane has a pressure surface, a downstream region of the pressure surface of the root portion being defined by the cutout as a curved surface which curves in a direction opposite to the swirl direction toward the trailing edge.
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