Title:
TURBINE CONTROL DEVICE
Document Type and Number:
Japanese Patent JPS6047801
Kind Code:
A
Abstract:
PURPOSE:To reduce a localized heat fatigue, by progressively switching a pattern for progressively controlling the open/closure of respective valves and its corresponding relation with respective valves in response to a demand of flow rate, in a control device wherein a plurality of steam flow regulating valves has its open/closure successively controlled in response to a demand of total flow rate. CONSTITUTION:Respective bypass valves are provided in a plurality of bypass pipes arranged in parallel each other to detour a turbine. To control the open/ closure of these valves by means of control section 20 dividing a bypass flow rate, the control section 20 is provided with a flow rate dividing pattern generators 23-1-23-3 adapted to output valve's flow rate demands y1-y3 in response to each different flow rate dividing patterns (a)-(c) according to a bypass valve's flow rate demand x. The level of flow rate demand x is detected by means of a level detector 24, so that a ring counter 25 may be advanced in steps according to the output and presence or absence of flow rate demand. Respective flow rate demands y1-y3 are selected by means of selectors 26-28 in response to an output from this counter 25.
Inventors:
TONE YOUICHI
Application Number:
JP15414083A
Publication Date:
March 15, 1985
Filing Date:
August 25, 1983
Export Citation:
Assignee:
TOSHIBA KK
International Classes:
F01K9/04; F01D17/10; F01D17/24; F01D19/00; (IPC1-7): F01D17/24; F01D19/00; F01K9/04
Domestic Patent References:
| JPS57183502A | 1982-11-11 | |||
| JPS581247A | 1983-01-06 |
Attorney, Agent or Firm:
Makoto Monda