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US 8,418,467 B2Granted
System including feedwater heater for extracting heat from low pressure steam turbine
AssigneeGeneral Electric Company
InventorsMahendhra Muthuramalingam, Veerappan Muthaiah, Raub Warfield Smith
Life of this patent
Estimating the term…
Abstract
A system is disclosed including a low pressure steam turbine; an air-cooled condenser (ACC) in fluid connection with the low pressure (LP) steam turbine, the ACC for receiving a portion of steam from an exhaust of the LP steam turbine; a feedwater heater in fluid connection with the low pressure steam turbine via a conduit, the feedwater heater for receiving a portion of supply steam from the LP steam turbine; and a condensate pump in fluid connection with the ACC and the feedwater heater, the condensate pump for receiving condensate fluid from the ACC and drain fluid from the feedwater heater.
Claims12
A system comprising:
- a low pressure (LP) steam turbine;
- an air-cooled condenser (ACC) in fluid connection with the low pressure steam turbine, the ACC for receiving a portion of steam from an exhaust of the low pressure steam turbine;
- a feedwater heater in fluid connection with the low pressure steam turbine via a conduit, the feedwater heater for receiving a portion of supply steam from the LP steam turbine,
- wherein the portion of supply steam is extracted from the LP steam turbine by interstage extraction, wherein the portion of supply steam extracted is approximately 1-40 percent of a total portion of LP steam supplied to the LP steam turbine;
- a condensate pump in fluid connection with the ACC and the feedwater heater, the condensate pump for receiving condensate fluid from the ACC and drain fluid from the feedwater heater;
- a heat recovery steam generator (HRSG) fluidly connected to the feedwater heater and the low pressure steam turbine, the HRSG for receiving heated feedwater from the feedwater heater;
- a gland seal condenser in fluid connection with the condensate pump and the feedwater heater, the gland seal condenser for providing a preheated condensate fluid to the feedwater heater;
- and
- a bypass conduit and a bypass valve operably connected thereto, the bypass conduit allowing a portion of the preheated condensate fluid to bypass the feedwater heater and be received by the HRSG in the case that the bypass valve is not closed.
6 more elements
A system comprising:
- a steam turbine operably connected to a shaft;
- a load device operably connected to the shaft;
- a low pressure (LP) steam turbine in fluid connection with the steam turbine and operably connected to the shaft;
- an air-cooled condenser (ACC) in fluid connection with the low pressure steam turbine, the ACC for receiving a portion of steam from an exhaust of the low pressure steam turbine;
- a feedwater heater in fluid connection with the low pressure steam turbine via a conduit, the feedwater heater for receiving a portion of supply steam from the LP steam turbine;
- a condensate pump in fluid connection with the ACC and the feedwater heater, the condensate pump for receiving condensate fluid from the ACC and drain fluid from the feedwater heater,
- a heat recovery steam generator (HRSG) fluidly connected to the feedwater heater, the low pressure steam turbine, and the steam turbine, the HRSG receiving heated feedwater from the feedwater heater;
- a gland seal condenser in fluid connection with the condensate pump and the feedwater heater, the gland seal condenser for providing a preheated condensate fluid to the feedwater heater;
- and
- a bypass conduit and a bypass valve operably connected thereto, the bypass conduit allowing a portion of the preheated condensate fluid to bypass the feedwater heater and be received by the HRSG in the case that the bypass valve is not closed.
7 more elements
A combined cycle system comprising:
- a gas turbine operably connected to a first shaft and fluidly connected to a heat recovery steam generator (HRSG);
- a first load device operably connected to the first shaft;
- a steam turbine operably connected to one of the first shaft or a second shaft and fluidly connected to the HRSG;
- a low pressure (LP) steam turbine in fluid connection with the steam turbine and the HRSG, and operably connected to the one of the first shaft or the second shaft operably connected to the steam turbine;
- an air-cooled condenser (ACC) in fluid connection with the low pressure steam turbine, the ACC for receiving a portion of steam from an exhaust of the low pressure steam turbine;
- a feedwater heater in fluid connection with the low pressure steam turbine via a conduit, the feedwater heater for receiving a portion of supply steam from the LP steam turbine;
- a condensate pump in fluid connection with the ACC and the feedwater heater, the condensate pump for receiving condensate fluid from the ACC and drain fluid from the feedwater heater,
- a heat recovery steam generator (HRSG) fluidly connected to the feedwater heater, the low pressure steam turbine, and the steam turbine, the HRSG receiving heated feedwater from the feedwater heater;
- a gland seal condenser in fluid connection with the condensate pump and the feedwater heater, the gland seal condenser for providing a preheated condensate fluid to the feedwater heater;
- and
- a bypass conduit and a bypass valve operably connected thereto, the bypass conduit allowing a portion of the preheated condensate fluid to bypass the feedwater heater and be received by the HRSG in the case that the bypass valve is not closed.
8 more elements
Dependencies are inferred from the claim text.