Title:
COOLING DEVICE OF STEAM TURBINE
Document Type and Number:
Japanese Patent JPS58113501
Kind Code:
A
Abstract:
PURPOSE:To efficiently cool a turbine, by connecting a branch pipe between primary and secondary heaters to both interpose a flow regulting valve to said branch pipe and connect the other end of said branch pipe to a cooling steam pipe opened to a high pressure stage of the turbine. CONSTITUTION:A flow regulating valve 21 connected to a cooling steam pipe of a high pressure turbine 9 is interposed in a branch pipe 22, and the pipe 22 is branched from between a primary heater 13 and secondary heater 14. In this way, high pressure steam at low temperature taken off from the pipe 22 is guided as the cooling steam to a cooling steam pipe 25 while being controlled a flow by the valve 21 on a path of the pipe 22 through temperature of main steam flowig in a main steam pipe 12, then the cooling steam flows in through a nozzle box 26 to directly cool a turbine rotor 27. Further said cooling steam flows in a balance hole 29 formed in a moving blade embedded part 30 to cool said part 30. Accordingly, the cooling steam can be easily obtained without causing the decrease of temperature of steam once heated.
Inventors:
KAWASAKI SAKAE
Application Number:
JP21004081A
Publication Date:
July 06, 1983
Filing Date:
December 28, 1981
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
F01D9/06; F01D5/08; F01D5/18; F01D25/12; F01K13/00; (IPC1-7): F01D5/08; F01D5/18; F01D9/06; F01D25/12
Attorney, Agent or Firm:
Noriyuki Noriyuki
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