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AssigneeMitsubishi Heavy Industries, Ltd.
InventorsTakehiko Shimizu, Satoshi Hada, Kouichi Akagi, Katsunori Tanaka, Ryotaro Magoshi, Mitsuo Hasegawa, Shigemi Mandai, Mitsuru Kondo
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A cooling structure of a combustor tail tube is capable of avoiding the formation of cracks in the tail tube by lessening thermal stress and preventing thermal deformation, thus extending the service life. A multiplicity of cooling jackets (5) extend in the longitudinal direction of the tail tube of a gas turbine combustor along the entire circumference of the tail tube wall. The passage sectional area of the cooling jackets (5) is varied depending on the metal temperature of parts of the tail tube (4). For example, the passage sectional area of the cooling jackets (5) formed at the rotor side wall and the mutually opposite side walls of the adjacent tail tube is larger than the passage sectional area of the cooling jackets (5) formed at the casing side wall.
A cooling structure of a combustor tail tube for a gas turbine, the combustor tail tube extending in a longitudinal direction and having a circumferential wall comprising a rotor side wall, mutually opposite side walls and a casing side wall which together extend circumferentially about the tail tube, said cooling structure comprising a plurality of cooling jackets extending in the longitudinal direction of the combustor tail tube at each of said rotor side wall, said mutually opposite side walls and said casing side wall, said plurality of cooling jackets having cooling passages extending in the longitudinal direction of said tail tube at each said side wall, and said cooling passages having a sectional area such that the sectional area of said cooling passages at said rotor side wall and said mutually opposite side walls is larger than the sectional area of said cooling passages at said casing side wall in order to prevent thermal deformation due to temperature differences.
A cooling structure of a combustor tail tube for a gas turbine, comprising:
Dependencies are inferred from the claim text.