Multi-cylinder steam turbine set
Patent 5051061 Issued on September 24, 1991. Estimated Expiration Date: 
December 6, 2009. 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.
December 6, 2009. 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 986635 1416760 1684082 2933893 3658438 3771499 3837164 Wind motor Patent #: 4037983 InventorApplicationNo. 446688 filed on 12/06/1989US Classes:415/104, WITH SHAFT CONNECTED FLUID FORCE SUBJECTED THRUST BALANCING SURFACE248/901, SUPPORT HAVING TEMPERATURE OR PRESSURE RESPONSIVE FEATURE415/126INCLUDING CASING PART SELECTIVELY MOVABLE RELATIVE TO FIXED SUPPORTExaminersPrimary: Kwon, John T.Attorney, Agent or FirmForeign Patent References
International ClassF01D 003/00Foreign Application Priority Data1988-12-23 CHAbstractIn order to compensate for the axial displacements of the rotors of steam turbines occurring in operation by simultaneous displacement of the inner casing (11, 12) and, by this means, to keep the axial clearance between the stator and rotor blading rows constant, the inner casing (11, 12) of a double-casing turbine is supported in its outer casing (9, 10) so that it can be displaced relative to it. Lever pairs (18, 19), each having a two-arm displacement lever (20, 27), which is supported on bearing blocks (21, 28) fixed relative to the outer casing, and an expansion lever (22, 29) interacting with it are used for the displacement. An extension (Ɗl), occurring due to the operational heating in a section of length (1) of the inner casing (11, 12), between two bearing trunnions (23, 26) is transmitted by the expansion levers (22, 29) to the displacement lever (20, 27), whose pivoting about the bearing trunnion (26) in the clockwise direction achieves the necessary displacement (Ɗx, Ɗx2).Other References
Field of SearchSerially spaced in working fluid flow pathWith initial fluid flow path to each runner WITH SHAFT CONNECTED FLUID FORCE SUBJECTED THRUST BALANCING SURFACE INCLUDING CASING PART SELECTIVELY MOVABLE RELATIVE TO FIXED SUPPORT INCLUDING THERMAL EXPANSION JOINT SUPPORT HAVING TEMPERATURE OR PRESSURE RESPONSIVE FEATURE Resilient means acts through linkage or gear | |
