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AssigneeMitsubishi Hitachi Power Systems, Ltd.
InventorsKohei Hidaka, Susumu Wakazono, Toshihiro Takeda, Scott Cloyd, Santo Scimeca
Estimating the term…
An exhaust-side journal bearing for supporting a gas turbine rotor is disposed inside a bearing box. The bearing box is supported by a strut which extends inward from an exhaust casing, and a seal ring having an annular inner peripheral end is disposed on the bearing box. Executed during a maintenance work are: a bearing adjustment step of displacing a bearing surface of the journal bearing relative to the bearing box in a perpendicular direction perpendicular to the axial direction; and a seal ring adjustment step of displacing the inner peripheral end of the seal ring relative to the bearing box in accordance with the direction of displacement and the amount of displacement of the bearing surface.
A maintenance method for a gas turbine where a gas turbine exhaust-side journal bearing for supporting a gas turbine rotor is disposed in a bearing box, the bearing box is supported by a strut extending from an exhaust casing of the gas turbine toward the inside of the exhaust casing, and a seal ring which includes an annular inner peripheral end and seals between one side and the other side thereof in an axial direction of the gas turbine rotor is provided in the bearing box, the maintenance method comprising:
Dependencies are inferred from the claim text.