Patent application number | Description | Published |
20100242430 | COMBINED CYCLE POWER PLANT INCLUDING A HEAT RECOVERY STEAM GENERATOR - A combined cycle power plant includes a gas turbomachine, a steam turbomachine operatively coupled to the gas turbomachine, and a heat recovery steam generator operatively coupled to the gas turbomachine and the steam turbomachine. The heat recovery steam generator includes a high pressure reheat section provided with at least one high pressure superheater and at least one reheater. The combined cycle power plant further includes a controller operatively connected to the gas turbomachine, the steam turbomachine and the heat recovery steam generator. The controller is selectively activated to initiate a flow of steam through the heat recovery steam generator following shutdown of the gas turbomachine to lower a temperature of at least one of the high pressure superheater and the at least one reheater and reduce development of condensate quench effects during HRSG purge of a combined cycle power plant shutdown. | 09-30-2010 |
20110113786 | COMBINED CYCLE POWER PLANT WITH INTEGRATED ORGANIC RANKINE CYCLE DEVICE - A combined cycle power plant includes a gas turbomachine having a compressor portion and a turbine portion, a heat recovery steam generator (HRSG) operatively coupled to the turbine portion of the gas turbomachine, and an organic Rankine cycle (ORC) device fluidly coupled to the HRSG. The ORC device includes an organic fluid passing through a closed loop system operatively coupled to a turbine. Heated fluid from the HRSG elevates a temperature of the organic fluid flowing through the closed loop system. Thermal energy from the organic fluid is converted to mechanical energy in the turbine. | 05-19-2011 |
20110185744 | METHOD AND APPARATUS FOR COMBINED CYCLE POWER PLANT STARTUP - A combined cycle power plant startup system is provided. The system includes a steam turbine, a HRSG, a condenser, and a bypass system. The steam turbine may include a turbine section. The HRSG may be operably connected to the steam turbine for providing steam to the steam turbine. The HRSG may include a reheater. The bypass system may be configured to adjust the steam pressure downstream of the reheater by routing steam downstream of the reheater to the condenser. The bypass system may include at least one bypass line, at least one control valve operably connected to the at least one bypass line, a pressure gauge configured to monitor the steam pressure downstream of the reheater, and a controller configured to communicate with the pressure gauge and operate the at least one control valve. | 08-04-2011 |
20110283706 | SYSTEM AND METHODS FOR PRE-HEATING FUEL IN A POWER PLANT - A method for assembling a fuel supply system for use with a power generation system. The method includes coupling a fuel heater to a fuel source for heating a fuel. A first heating assembly is coupled to the fuel heater for heating a first flow of water channeled to the fuel heater. A heat recovery steam generator assembly is coupled to the fuel heater for channeling a second flow of heated water to the fuel heater. A valve assembly is coupled between the first heating assembly, the heat recovery steam generator assembly, and the fuel heater to enable a flow of heated water from the first heating assembly and the heat recovery steam generator assembly to be selectively channeled to the fuel heater. | 11-24-2011 |
20120036828 | Combined Cycle Power Plant Including a Heat Recovery Steam Generator - A combined cycle power plant includes a gas turbomachine, a steam turbomachine operatively coupled to the gas turbomachine, and a heat recovery steam generator operatively coupled to the gas turbomachine and the steam turbomachine. The heat recovery steam generator includes a high pressure reheat section provided with at least one high pressure superheater and at least one reheater. The combined cycle power plant further includes a controller operatively connected to the gas turbomachine, the steam turbomachine and the heat recovery steam generator. The controller is selectively activated to initiate a flow of steam through the heat recovery steam generator following shutdown of the gas turbomachine to lower a temperature of at least one of the high pressure superheater and the at least one reheater and reduce development of condensate quench effects during HRSG purge of a combined cycle power plant shutdown. | 02-16-2012 |
20130167557 | POWER PLANT - A power plant includes a compressor configured to compress inlet air for combustion. The power plant also includes an air separation unit configured to receive and remove nitrogen from an air supply. The power plant further includes a fluid manipulator operably coupled to the air separation unit and the compressor, wherein the fluid manipulator is configured to receive nitrogen removed from the air separation unit at an inlet pressure and an inlet temperature and produce a modified pressure and a modified temperature of the nitrogen prior to selectively delivering the nitrogen to the compressor. | 07-04-2013 |
20140069078 | Combined Cycle System with a Water Turbine - The present application and the resultant patent provide a combined cycle system with a flow of feed water therein. The combined cycle system may include a gas turbine, a steam turbine, a heat exchanger with the flow of feed water flowing therethrough, an expansion source for expanding the flow of feed water, and a supplemental power generation system positioned between the heat exchanger and the expansion source and driven by the flow of feed water. | 03-13-2014 |
20140102071 | SYSTEM AND METHOD FOR HEATING FUEL IN A COMBINED CYCLE GAS TURBINE - A system for heating fuel in a combined cycle gas turbine includes a fuel heat exchanger downstream from a turbine outlet, and the fuel heat exchanger has an exhaust gas inlet, an exhaust gas outlet, a fuel inlet, and a fuel outlet. A first exhaust gas plenum has a first exhaust gas inlet connection between the turbine outlet and a heat exchanger and a first exhaust gas outlet connection upstream from the exhaust gas inlet. A second exhaust gas plenum has a second exhaust gas inlet connection downstream from at least a portion of the heat exchanger and a second exhaust gas outlet connection upstream from the exhaust gas inlet. | 04-17-2014 |
Patent application number | Description | Published |
20090090111 | Supercritical steam combined cycle and method - A supercritical steam combined cycle system including a gas turbine; a supercritical steam turbine system including a supercritical section, a high pressure section, an intermediate pressure section and at least one low pressure section; and a supercritical steam heat recovery steam generator (HRSG) for receiving exhaust gas from the gas turbine for heating fluid from the steam turbine system. The HRSG includes a supercritical evaporator arranged to supply steam to a superheater between the supercritical evaporator and the inlet of the HRSG and a reheater receiving cold reheat steam from and returning reheated steam to the steam turbine system. The reheater includes a first section disposed downstream of and a second section disposed upstream of the supercritical evaporator along the exhaust gas flow path. Cool reheat steam from the steam turbine system is received by the first reheater section and steam leaving the first reheater section is supplied to the second reheater section upstream of the supercritical evaporator. | 04-09-2009 |
20100024383 | SYSTEM AND METHOD FOR USE IN A COMBINED OR RANKINE CYCLE POWER PLANT - A system is provided and includes a first condenser configured to fluidly receive a first steam supply and tower water and to output a first water supply, a second condenser configured to fluidly receive a first portion of a second steam supply and the first water supply and to output a second water supply, and a vapor-absorption-machine (VAM) configured to fluidly receive a second portion of the second steam supply and the second water supply by which a refrigeration cycle is conducted to thereby cool at least one of the tower water and a third water supply used to cool the tower water. | 02-04-2010 |
20140216363 | SYSTEM AND METHOD FOR HEAT RECOVERY STEAM GENERATORS - A system includes a heat recovery steam generator (HRSG) having a plurality of evaporator sections. At least one evaporator section includes a forced circulation evaporator configured to generate a saturated steam, a once-through evaporator configured to generate a first superheated steam, and a first superheater configured to receive the saturated steam and the first superheated steam. | 08-07-2014 |
20140216365 | SYSTEM AND METHOD FOR HEAT RECOVERY STEAM GENERATORS - A system includes a heat recovery steam generator (HRSG) including a plurality of evaporator sections. At least one evaporator section includes a natural circulation evaporator configured to generate a saturated steam, a once-through evaporator configured to generate a first superheated steam, a first superheater configured to receive the saturated steam from the natural circulation evaporator, and a second superheater configured to receive the first superheated steam from the once-through evaporator. | 08-07-2014 |
20140298816 | SIMPLE CYCLE GAS TURBOMACHINE SYSTEM HAVING A FUEL CONDITIONING SYSTEM - A simple cycle gas turbomachine includes a compressor portion, and a turbine portion having an outlet. At least one combustor is fluidically connected to the compressor portion and the turbine portion. An exhaust member includes an inlet, fluidically connected to the outlet of the turbine portion, a first outlet and a second outlet. A fuel conditioning system includes a heat exchange member provided with a first circuit having an exhaust gas inlet fluidically connected to the second outlet of the exhaust member and an exhaust gas inlet, a second circuit having an inlet fluidically connected to a source of fuel and an outlet fluidically connected to the at least one combustor. A conditioned fluid conduit is fluidically connected between a source of conditioned fluid and one of the combustor assembly and the first outlet of the exhaust member. | 10-09-2014 |