General Electric Company

Diego Fernando Rancruel

Leslie Yung-Min Tong

Joel Donnell Holt

Raub Warfield Smith

David Wesley Ball, Jr

Kihyung Kim

Tailai Hu

Elizabeth Angelyn Fadde

Korey Frederic Rendo

Kyle Joseph Conger

Leslie Yung Min Tong

Drake Joseph Viscome

Ashlee Nicole Atwell

Hua Zhang

Jatila Ranasinghe

Dean Matthew Erickson

Leroy Omar Tomlinson

Kamlesh Mundra

Michael Joseph Alexander

Charles Michael Jones

Anil Kumar Sharma

Kelvin Rafael Estrada

Erhan Karaca

Shinoj Vakkayil Chandrabose

John Anthony Conchieri

Prakash Narayan Govindan

Stephen R Watts

Ameya Chandrakant Joshi

Seyfettin Can Gülen

Prashant C Mahalingappanavar

Michael Brian Smith

SriHarsha Vedavyasachar

Bryan Michael Jones

A method for adjusting startup floor pressure levels of HRSG steam circuits is implemented by a pressure controlling computing device including a processor and a memory. The method includes receiving a plurality of measured plant operating values associated with a HRSG steam circuit, identifying a plurality of candidate pressure levels for use in pressurizing the HRSG steam circuit, determining a calculated steam velocity level for each of the plurality of candidate pressure levels, identifying a steam velocity limit for a steam piping section of the HRSG steam circuit, selecting a lowest pressure level of the plurality of candidate pressure levels, wherein the lowest pressure level is associated with a determined calculated steam velocity level that does not exceed the identified velocity limit, and pressurizing the HRSG steam circuit to the selected lowest pressure level.

Systems and methods for adjusting floor pressure levels to improve combined cycle plant startup

A combustor can assembly includes a plurality of combustor cans spaced circumferentially about a gas turbine engine. Each combustor can is coupled in flow communication with at least one fuel manifold via a respective can fuel line. The combustor can assembly also includes a first interconnecting fuel line that includes a first end and a second end. The first end is coupled in flow communication with the can fuel line of a first combustor can, and the second end is coupled in flow communication with the can fuel line of a second combustor can that is not circumferentially adjacent to the first combustor can. The combustor can assembly further includes a first control device operatively coupled to the can fuel line of the first combustor can. The first control device is operable to change a dynamic operational characteristic of the first and second combustor cans independently of other combustor cans.

Combustor assembly for a gas turbine engine and method of making same

A power augmentation system for a gas turbine that is electrically coupled to a power grid incudes, in serial flow order, a compressed air supply, a compressed air storage tank and an expansion turbine that is disposed downstream from the compressed air storage tank. An exhaust outlet of the expansion turbine is in fluid communication with at least one of an inlet section or a compressor of the gas turbine.

Power augmentation system for a gas turbine

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.

System and method for heat recovery steam generators

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.

System and method for heating fuel in a combined cycle gas turbine

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.

Simple cycle gas turbomachine system having a fuel conditioning system

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.

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.

Combined cycle power plant including a heat recovery steam generator

The present application describes a heat recovery steam generator. The heat recovery steam generator may include a superheater, a first turbine section, a first main steam line in communication with the superheater and the first turbine section, and a first prewarming line positioned downstream of the first main steam line such that a flow of steam from the superheater preheats the first main steam line without entry into the first turbine section.

Systems and methods for prewarming heat recovery steam generator piping

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.

Method and apparatus for combined cycle power plant startup

In one embodiment, a system includes an emissions reduction system including a compressor in fluid communication with a catalyst mixing tank. The compressor is configured to output an air flow configured to deliver catalyst from the catalyst mixing tank to a catalyst injection grid. A temperature of the air flow is increased by the compressor.

Ammonia injection system

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.

System and methods for pre-heating fuel in a power plant

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.

Supercritical steam combined cycle and method

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.

Growing community of inventors

Greenville, SC, United States of America

Diego Fernando Rancruel