Combined cycle power plant

• US 5,649,416 A
• Filed: 10/10/1995
• Issued: 07/22/1997
• Est. Priority Date: 10/10/1995
• Status: Expired due to Term

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Moore, James H.
• Primary Examiner(s): Casaregola, Louis J.
• Application Number:
  US08/541,349
• Time in Patent Office: 651 Days
• Field of Search: 60/39.15, 60/39.182, 307/47, 307/57, 307/68, 307/84
• US Class Current: 60/39.15
• CPC Class Codes: F01D 13/00 Combinations of two or more machines or engines F01D15/00 takes precedence; combinations of two or more pumps F04; fluid gearing F16H
• CPC Class Codes: F01K 23/101 Regulating means specially adapted therefor F01K23/105, F01K23/108 take precedence
• CPC Class Codes: F01K 23/16 all the engines being turbines F01K23/14 takes precedence
• CPC Class Codes: F02C 6/18 using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants using waste heat as source of energy for refrigeration plants F25B27/02; using the waste heat of a gasturbine for steam generation or in a steam cycle see F01K23/10
• CPC Class Codes: Y02E 20/16 Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]

Abstract

A combined cycle power plant includes at least two gas turbines driving two generators on respective first and second shafts; and a steam turbine having plural sections wherein one or more of the plural sections are on the first shaft and remaining sections of the plural sections are on the second shaft. A variation of the combined cycle power plant includes two gas turbines driving two generators on respective first and second shafts; and a steam turbine including high, intermediate, and low pressure sections on the second shaft.

Claims

1. A combined cycle power plant comprising at least two gas turbines driving two generators on respective first and second shafts;

and a single steam turbine having plural sections including a single high pressure section, wherein one or more of said plural sections are on said first shaft and remaining sections of said plural sections are on said second shaft.

4. The combined cycle power plant of claim 1 and including a single transformer connected to both generators.

2. A combined cycle power plant comprising at least two gas turbines driving two generators on respective first and second shafts;

and a steam turbine having plural sections wherein one or more of said plural sections are on said first shaft and remaining sections of said plural sections are on said second shaft, and further comprising a single heat recovery steam generator by which exhaust gas from the at least two gas turbines is used to heat condensed stream from the steam turbine.

3. A combined cycle power plant comprising at least two gas turbines driving two generators on respective first and second shafts;

and a steam turbine having plural sections wherein one or more of said plural sections are on said first shaft and remaining sections of said plural sections are on said second shaft, wherein high and intermediate steam turbine section are on said one shaft and a low pressure steam turbine section is on said second shaft, and further wherein steam from said intermediate section is input to said low pressure section.