Title:
DRIVING DEVICE OF TURBINE FOR DRIVING BOILER WATER FEEDING PUMP
Document Type and Number:
Japanese Patent JPS58217706
Kind Code:
A
Abstract:
PURPOSE:To improve a thermal efficiency and extend the life of opparatuses by a method wherein an upstream turbine extraction steam system having a source of extracted seam other than a main steam is arranged at the upstream side of the source of extracted steam in addition to the usual type of turbine extracted steam system. CONSTITUTION:An exhausted steam of a medium pressure turbine 2 drives a turbine 4 for driving a boiler water feeding pump through an extracted steam discharging valve 19, extracted steam check valve 11 and a low pressure steam control valve 12 based on a turnbe extraction steam system L1 under its normal condition. A low temperature reheating pipe 6, extracted steam discharging valve 16, pressure regulating valve 17 and extraction steam check valve 18 constitute a back-up turbine extracted steam system L2. Even if the pressure of the turbine extracted steam is decreased, an operation of the turbine 4 can be continued under a control of the back-up turbine extracted steam system L2. In this way, a thermal efficiency can be improved and the life of the apparatuses can be extended.
Inventors:
ONO KUNIO
SUGA YASUO
SUGA YASUO
Application Number:
JP9925482A
Publication Date:
December 17, 1983
Filing Date:
June 11, 1982
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
F01K7/38; F01D15/08; F01D17/00; F01K9/02; (IPC1-7): F01D15/08; F01D17/00; F01K7/38
Attorney, Agent or Firm:
Yoshiaki Inomata