Title:
VALVE CONTROL DEVICE FOR STEAM TURBINE AND VALVE CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2014/129467
Kind Code:
A1
Abstract:
Provided is a valve control device for a steam turbine, the device suppressing a reduction in active power and ensuring control stability when a power system accident has occurred.
A valve control device for a steam turbine is provided with: an accident detection unit (44) which detects the occurrence of a power system accident; a first selection unit (45) which selects, from among a plurality of steam regulating valves (13 (13a-13d)) for regulating the amount of steam flowing into the steam turbine, the steam regulating valve (13) to be rapidly closed according to the scale of the detected accident; and a normal control circuit (11) which continues normal pressure or speed control by the unselected steam regulating valve (13).
Inventors:
NAKATA NORIHITO
AOKI TOSHIO
MATSUMOTO MASAAKI
AOKI TOSHIO
MATSUMOTO MASAAKI
Application Number:
PCT/JP2014/053798
Publication Date:
August 28, 2014
Filing Date:
February 18, 2014
Export Citation:
Assignee:
TOSHIBA KK (JP)
International Classes:
F01D21/00; F01D21/02
Foreign References:
| JP2005291113A | 2005-10-20 | |||
| JPS6415404A | 1989-01-19 | |||
| JPH07145704A | 1995-06-06 | |||
| JP2012090422A | 2012-05-10 | |||
| JPS63314302A | 1988-12-22 | |||
| JPH10252416A | 1998-09-22 |
Other References:
See also references of EP 2960443A4
Attorney, Agent or Firm:
TOKYO INTERNATIONAL PATENT FIRM (JP)
Patent business corporation Tokyo international patent firm (JP)
Patent business corporation Tokyo international patent firm (JP)
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