Method and a device in a rotating machine
Patent 5330320 Issued on July 19, 1994. Estimated Expiration Date: 
March 31, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 31, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1823310 2762559 3227418 Gas turbine Turbine shroud assembly Multi-cylinder steam turbine set Tip clearance control apparatus for a turbo-machine blade Patent #: 5203673 InventorAssigneeApplicationNo. 040619 filed on 03/31/1993US Classes:415/129, RUNNER OR BLADE SELECTIVELY ADJUSTABLE RELATIVE TO CASING415/131Axially adjustedExaminersPrimary: Kwon, John T.Attorney, Agent or FirmInternational ClassF01D 025/24Foreign Application Priority Data1992-04-01 SEAbstractA method and a device for controlling the blade tip clearance in a rotating machine where the machine comprises a turbine part and a compressor part separate from the turbine part and the stator housing of the turbine part is formed with a stator cone. The invention is characterized in that one or more bladed turbine discs during a non-steady operation, such as start-up, stop and load changes, are moved out of the stator cone whereby the blade tip clearance is increased and that the turbine discs during continuous operation are moved into the stator cone such that the blade top clearance is reduced. | |
