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Title:
METHOD FOR STARTING OF SINGLE-SHAFT TYPE COMBINED CYCLE GENERATING EQUIPMENT
Document Type and Number:
Japanese Patent JPH0734810
Kind Code:
A
Abstract:

PURPOSE: To simplify the operation procedure and the equipment by introducing the steam of its shaft to execute the rated no-load operation or the initial load operation, and warming up a steam turbine at the steam temperature based on the temperature of the metal of the first stage shell inner surface of the steam turbine before starting at the prescribed ratio after the initial steam admission is started.

CONSTITUTION: A shaft is started to be rotated, and the cooling steam is fed when the rotation reaches the prescribed value. The temperature of the high pressure main steam is set based on the temperature of the first stage shell inner surface metal of the steam turbine by a function generator 31 of the main steam temperature set value of a steam admission monitoring and steam temperature controlling device 40, and the control is realized by this steam temperature when the warming-up of the exhaust heat recovery boiler is completed. After the steam admission is started, the temperature of the high pressure steam is raised at the temperature rise ratio based on the temperature of the first stage shell inner surface metal of the steam turbine when the warming-up of the exhaust heat recovery boiler is completed by the function generator 31 to warm up the steam turbine. The condition where the warming-up of the steam turbine is completed is obtained when the temperature of the first stage shell inner surface metal of the steam turbine remains unchanged, but in reality, when the temperature exceeds the prescribed value.


Inventors:
KONO TAKESHI
Application Number:
JP1993000182502
Publication Date:
February 03, 1995
Filing Date:
July 23, 1993
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
F01D19/00; F01D19/02; F01D25/10; F01K23/10; (IPC1-7): F01K23/10; F01D19/00; F01D19/02; F01D25/10
Attorney, Agent or Firm:
猪股 祥晃