Blade tip clearance control apparatus for gas turbine
AssigneeDoosan Heavy Industries Construction Co., Ltd
InventorYeong Chun KIM
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Abstract
A blade tip clearance control apparatus is disclosed. The apparatus includes a rotor, a hydraulic clearance control device, and a cylinder locking device. The rotor includes a thrust collar, a pair of thrust bearings axially supporting the thrust collar, and a plurality of radially extending blades. The hydraulic clearance control device includes a first hydraulic cylinder moving any one of the pair of thrust bearings in a forward axial direction and a second hydraulic cylinder moving the other thrust bearing in the reverse axial direction. The cylinder locking device includes a first locking device restricting a forward moving distance of the first hydraulic cylinder and a second locking device restricting a reverse moving distance of the second hydraulic cylinder.
Claims29
A blade tip clearance control apparatus comprising:
- a rotor comprising a thrust collar, a pair of thrust bearings axially supporting the thrust collar, and a plurality of radially extending blades;
- a hydraulic clearance control device comprising a first hydraulic cylinder configured to move one of the pair of thrust bearings in a forward axial direction and a second hydraulic cylinder configured to move a remaining one of the pair of thrust bearings in a reverse axial direction;
- and
- a cylinder locking device comprising a first locking device configured to restrict a forward moving distance of the first hydraulic cylinder and a second locking device configured to restrict a reverse moving distance of the second hydraulic cylinder.
Dependencies are inferred from the claim text.