Title:
COMBINED PLANT OF STEAM TURBINE/GAS TURBINE
Document Type and Number:
Japanese Patent JPH04269308
Kind Code:
A
Abstract:
PURPOSE:To improve thermal efficiency of a steam turbine/gas turbine combined plant by providing a steam generator for cooling the moving blades and stator blades of a gas turbine, and a cooling pipe communicated to a deaerator of the condensed water branched off from the condesate flow passage of a steam turbine. CONSTITUTION:A gas turbine 4 rotated by high temperature combustion gas generated from combustion of fuel by air compressed with an axial flow air compressor 2 is provided. Generators 5,9 are driven to generate electric power by using the gas turbine 4 and a steam turbine 8 rotated by steam generated by exhaust heat of the gasturbine 4. A cooling air piping system 17 communicated to the axial flow air compressor 2 and the gas turbine 4 is provided with a steam generator 18 of relative low pressure. Meanwhile, a cooling pipe 20 is branched off from the lower stream of a condensate pump 14, and communicated to a deaerator 15 through the steam generator 18. An adjusting valve 19 is provided on the cooling pipe between.
Inventors:
HASEGAWA NAOMIKI
Application Number:
JP2837891A
Publication Date:
September 25, 1992
Filing Date:
February 22, 1991
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F01D5/18; F01D9/02; F01K9/00; F01K23/10; F02C7/14; (IPC1-7): F01D5/18; F01D9/02; F01K9/00; F01K23/10; F02C7/14
Attorney, Agent or Firm:
Ishikawa Arata