Title:
STEAM TURBINE POWER GENERATOR
Document Type and Number:
Japanese Patent JPH01193004
Kind Code:
A
Abstract:
PURPOSE:To eliminate twist exciting force and prevent any breakage of turbine blades by constituting the rotary shaft of a steam turbine power generator in such a way that the linked twist rotational frequency formed with those of the rotary shaft and a turbine long blade is not shifted from a frequency twice as much as the operation system frequency of a steam turbine power generator. CONSTITUTION:A coupling part 12 is provided on a journal part 11 located on the turbine shaft side of the rotary shaft 10 in a steam turbine power generator. A weight 13 for adjustment as an added weight, is fixed on a side surface opposite to a turbine shaft side of this coupling part 12. The weight of this weight 13 is set to such a weight as the node 16a of a twist oscillation mode 16 is located on the central part, in longitudinal direction, of a shaft part 14 with the coil of the power generator wound thereon. On the other hand, a journal part 15 is provided on the side opposite to the turbine shaft side on the rotary shaft 10, so that the diameter D1 is set larger than the diameter D2 of the journal part 11. Thereby, it is possible to hold the balance of the rigidity in an axial direction and mass with respect to the coupling part 12 provided on the journal part 11.
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Inventors:
TSUNODA EIJI
Application Number:
JP1586488A
Publication Date:
August 03, 1989
Filing Date:
January 28, 1988
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
F01D5/10; F01D25/04; H02K7/00; (IPC1-7): F01D5/10; F01D25/04; H02K7/00
Attorney, Agent or Firm:
Hisano Hatano (1 person outside)
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