Title:
TURBINE CONTROLLING METHOD AND TURBINE CONTROLLING DEVICE
Document Type and Number:
Japanese Patent JP3613690
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To supply re-heated steam of the most suitable temperature in reference to a heat exchange balance in a heater in each of stages in a steam turbine heater provided with a plurality of stages of heaters and adjust an amount of heated steam in a rear stage so as not to apply overload on the heater in a rear stage.
SOLUTION: A controlling method controls a moisture separating heater 6 comprising a first stage heater 7 for heating steam (P0) at an outlet of a high pressure turbine with extracted steam (P1) of the high pressure turbine and a second stage heater 9 for heating the heated steam with a part (P2) of the main steam fed from a steam source 1 through a heated steam regulating valve 17 and supplying it to a low pressure turbine 13. A temperature of steam at an outlet port of the first stage heater is calculated on the basis of a temperature and a flow rate of each of steams calculated in reference to the steam pressure (P0) at the outlet of the high pressure turbine and an extracted steam pressure (P1) of the high pressure turbine, and a flow rate in which a temperature difference of steam at an outlet port and an inlet port of the second stage heater 9 where a steam at the outlet of the first stage heater 7 is heat-exchanged with a part of main steam (P2) becomes not more than a temperature difference defined in reference to a deformation tolerance amount of the heater is calculated and controlled by the heated steam regulating valve 17.
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Inventors:
Norihisa Wada
Hideaki Kaneda
Hideaki Kaneda
Application Number:
JP30608496A
Publication Date:
January 26, 2005
Filing Date:
November 18, 1996
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
F01D17/08; F22G3/00; F22G5/04; (IPC1-7): F22G3/00; F01D17/08
Domestic Patent References:
| JP1230908A | ||||
| JP62175503A | ||||
| JP58080406A | ||||
| JP62091706A | ||||
| JP60224905A | ||||
| JP62087705A | ||||
| JP62198308U |
Attorney, Agent or Firm:
Tatsuyuki Unuma
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