Patent ID: 7607304
Filing Date: 2009-10-27
Classification: F01K

Abstract:
1. A steam turbine system, comprising: a system power output shaft for the delivery of rotational energy from said steam turbine system; an electrical generator connected to said system power output shaft for the generation of electrical energy from said rotational energy delivered from said steam turbine system; a high-pressure boiler for the generation of steam at a high-pressure and a high temperature; a high-pressure steam conduit connected to said high-pressure boiler for the output of said high-pressure steam from said high-pressure boiler; a high-pressure steam turbine connected to said high-pressure steam conduit for receiving said high-pressure steam from said high-pressure steam conduit, said high pressure steam turbine having a first turbine output shaft connected to said system power output shaft, a bleed output and a first steam output conduit for the output of steam from said high-pressure turbine at a reduced pressure and temperature as compared to said high-pressure steam; an intermediate pressure steam turbine having an input connected to said first steam output conduit of said high-pressure steam turbine for receiving steam from said high-pressure steam turbine, said intermediate pressure steam turbine having a second turbine output shaft connected to said system power output shaft and a second steam output conduit for the output of steam from said intermediate pressure steam turbine at a further reduced pressure and temperature as compared to steam output from said high-pressure steam turbine; a low-pressure steam turbine connected to said second steam output conduit for receiving steam from said second pressure output conduit said first low pressure steam turbine having a third turbine output shaft connected to said system power output shaft and a third steam output conduit for the output of steam at a still further reduced pressure and temperature as compared to steam output from said intermediate pressure turbine; a heat exchanger interconnected between said high pressure steam turbine and said low pressure steam turbine so as to heat the steam received by said low-pressure steam turbine; a steam regenerative heater system connected to said bleed output of said high-pressure steam turbine for the return of steam from said high-pressure steam turbine to said high-pressure boiler; a tuning turbine having an input connected to said first steam output conduit of said high-pressure steam turbine and having a fourth turbine output shaft connected to said system power output shaft; and a fourth steam output conduit configured to conduct a substantial portion of steam output from said tuning turbine to said regenerative heater system at a reduced pressure and temperature as compared to said steam output from said high-pressure turbine, said tuning turbine further having at least one tuning turbine bleed output connected to said regenerative system.