초록 ▼

A fuel conditioning system for a turbine plant may include an inlet fuel module followed by a turbine fuel module for each turbine, the modules being monitored and controlled by a programmable logic controller. The inlet fuel module may include a metering station, an inlet pressure control station,

A fuel conditioning system for a turbine plant may include an inlet fuel module followed by a turbine fuel module for each turbine, the modules being monitored and controlled by a programmable logic controller. The inlet fuel module may include a metering station, an inlet pressure control station, an inlet scrubber station, and an inlet coalescing filter station. Each turbine fuel module has a turbine pressure control station, a turbine super-heater station, and a turbine coalescing filter station. The fuel conditioning system may also include a trip transient mitigation system and a latent fuel venting system. The programmable logic controller collects data from all of the stations and systems as well as the turbine and then uses self-correcting algorithms to control the stations and systems. The programmable logic controller also stores the data collected and transmits the data to an off-site storage and verification center.

대표청구항 ▼

1. A fuel conditioning system for conditioning natural gas fuel provided by a pipeline for use with at least one natural gas fuel powered turbine, comprising:an inlet fuel module receiving fuel from the pipeline, the inlet fuel module having a metering station, an inlet pressure control station, an

1. A fuel conditioning system for conditioning natural gas fuel provided by a pipeline for use with at least one natural gas fuel powered turbine, comprising:an inlet fuel module receiving fuel from the pipeline, the inlet fuel module having a metering station, an inlet pressure control station, an inlet scrubber station, and an inlet filter station, the inlet fuel module metering natural gas fuel flow from the pipeline, controlling the pressure of the natural gas fuel from the pipeline and filtering the natural gas fuel from the pipeline; a turbine fuel module for at least one turbine, the tuTtbine control module having a turbine pressure control station to control the pressure of the fuel, a turbine super-heater station to heat the fuel, and a turbine filter station to filter the fuel, the turbine fuel module receiving fuel from the inlet fuel module; and a programmable logic controller for collecting data from the inlet fuel module and turbine fuel module and for controlling the inlet fuel module and turbine fuel module to provide fuel for the at least one turbine. 2. The fuel conditioning system of claim 1, including a turbine fuel accessory module having a speed ratio valve and at least one fuel monitoring instrument, the fuel monitoring instrument being operable to activate the speed ratio valve in response to predetermined characteristics of the fuel exiting the turbine fuel module to shut off the supply of fuel to the turbine and the programmable logic controller collects data from the turbine fuel accessory module.3. The fuel conditioning system of claim 1, wherein the inlet fuel module has an inlet metering station having an inlet flow meter to measure natural gas fuel flow from the pipeline.4. The fuel conditioning system of claim 1, wherein the inlet pressure control station has an inlet pressure monitoring instrument and an inlet pressure regulator to reduce the pressure of the natural gas fuel.5. The fuel conditioning system of claim 1, wherein the inlet scrubber station has an inlet vertical centrifugal scrubber with an inlet scrubber level control valve, the vertical centrifugal scrubber removing liquids from the natural gas fuel and the inlet scrubber level control valve releasing the removed liquids from the scrubber.6. The fuel conditioning system of claim 1, wherein the inlet filter station has an inlet reverse flow coalescing filter and an inlet filter level control valve, the inlet reverse flow coalescing filter removing aerosols and particulates from the natural gas fuel and the inlet filter level control valve releasing the removed aerosols and particulates from the inlet reverse flow coalescing filter.7. The fuel conditioning system of claim 1, wherein each turbine pressure control station has a turbine pressure monitoring instrument and a turbine pressure regulator, the turbine pressure control station controlling the pressure of the natural gas fuel and limiting changes in the pressure of the natural gas fuel.8. The fuel conditioning system of claim 1, wherein each turbine super-heater station has at least one fuel monitoring instrument to determine the dew point of moisture in the fuel and the dew point of hydrocarbons in the fuel, a heater to heat the fuel above the dew point of the moisture and the dew point of the hydrocarbons found in the fuel gas, and heater control valves to control the temperature of the natural gas fuel and limit changes in the temperature of the natural gas fuel.9. The fuel conditioning system of claim 1, wherein the inlet filter station includes a coalescing filter.10. The fuel conditioning system of claim 1, wherein the turbine filter station includes a coalescing filter.11. The fuel conditioning system of claim 1, wherein each turbine filter station has a turbine reverse flow coalescing filter and a turbine filter level control valve, the turbine reverse flow coalescing filter removing aerosols and particulates from the natural gas fuel and the turbine filter level control valve releasing the removed aerosols and particulates from the turbine reverse flow coalescing filter.12. The fuel conditioning system of claim 1, including a trip transient mitigation system.13. The fuel conditioning system of claim 1, wherein the turbine fuel module includes a latent fuel venting system.14. The fuel conditioning system of claim 12, wherein the trip transient mitigation system has a surge vent valve activated by the programmable logic controller prior to the speed ratio valve being activated.15. The fuel conditioning system of claim 2, wherein the at least one fuel monitoring instrument measures the pressure, the temperature, or the volume of the natural gas fuel and speed ratio valve cuts off the natural gas fuel supply to the turbine when the fuel monitoring instrument measures a pressure, temperature or volume outside of an acceptable range.16. The fuel conditioning system of claim 2, further comprising a data recording device to record data from the inlet fuel module, the turbine fuel module, and the turbine fuel accessory module.17. The fuel conditioning system of claim 2, further comprising a data transmitting device to transmit data from the inlet fuel module, the turbine fuel module, and the turbine fuel accessory module to a facility remote from the fuel conditioning system.18. A fuel conditioning system for conditioning natural gas fuel provided by a pipeline for use with at least one natural gas fuel powered turbine, the fuel conditioning system comprising:an inlet metering station having an inlet flow meter to measure natural gas fuel flow from the pipeline; an inlet pressure control station having an inlet pressure monitoring instrument and an inlet pressure regulator, the inlet pressure regulator controlling the pressure of the natural gas fuel provided by the pipeline; an inlet scrubber station having an inlet vertical centrifugal scrubber and an inlet scrubber level control valve, the vertical centrifugal scrubber removing liquids from the natural gas fuel provided by the pressurized pipeline and the inlet scrubber level control valve releasing the removed liquids from the scrubber; an inlet filter station having an inlet filter and an inlet filter level control valve, the inlet flow filter removing aerosols and particulates from the natural gas fuel provided by the pressurized pipeline and the inlet filter level control valve releasing the removed aerosols and particulates from the inlet filter; a turbine distribution system for receiving natural gas fuel which has passed though the inlet pressure control station, the inlet scrubber station and the inlet filter station; at least one turbine pressure control station receiving natural gas fuel from the turbine distribution system, the turbine pressure control station having a turbine pressure monitoring instrument and a turbine pressure regulator, the turbine pressure regulator controlling the pressure of the natural gas fuel received and controlling pressure changes in the natural gas fuel received; at least one turbine super-heater station receiving natural fuel gas from the turbine distribution system, the turbine super-heater station having turbine super-heater monitoring instruments to determine the dew point of the natural gas fuel and the dew point of hydrocarbons in the natural gas fuel, the super-heater station further having a heater to heat the natural gas fuel gas above the dew point of both moisture and hydrocarbons found in the natural gas fuel, and at least one heater control valve to limit changes in the temperature of the natural gas fuel; at least one turbine filter station having a turbine filter and a turbine filter level control valve, the turbine filter removing aerosols and particulates from the natural gas fuel and the turbine filter level control valve releasing the removed aerosols and particulates from the turbine filter; at least one trip transient mitigation system having a surge vent valve; at least one turbine fuel accessory unit having fuel accessory unit monitoring instrument to measure the pressure, the temperature, or the volume of the fuel gas and a speed ratio valve, the fuel accessory unit monitoring instrument communicating with the speed ratio valve to close the speed ratio valve when the fuel accessory monitoring instrument measures a pressure, a temperature, or a volume outside of an acceptable range; and a programmable logic controller associated with and receiving data from the inlet flow meter, the inlet pressure monitoring instrument, the inlet scrubber level control valve, the inlet filter level control valve, the turbine pressure monitoring instrument, the turbine super-heater monitoring instrument, the turbine filter level control valve, and the fuel accessory monitoring instrument, the programmable logic controller also associated with, and providing control commands to, the inlet pressure regulator, the turbine pressure regulator, the heater, the heater control valve, and the surge vent, the control commands based upon the data received and control algorithms. 19. The fuel conditioning system of claim 18, wherein the programmable logic controller employs self-correcting control algorithms to adjust the inlet pressure regulator and the turbine pressure regulator to reduce pressure gradients at the turbine fuel accessory unit.20. The fuel conditioning system of claim 18, wherein the programmable logic controller uses self-correcting algorithms to adjust the heater and heater control valves to reduce temperature gradients at the turbine fuel accessory unit.21. The fuel conditioning system of claim 18, further comprising a latent fuel vent that releases treated fuel when a turbine is not running so that liquids do not form in the natural gas fuel as the fuel cools in a distribution system while a turbine is not running.22. The fuel conditioning system of claim 21, wherein the natural gas fuel released from the latent fuel vent is captured and routed for use as a fuel for the heater.23. The fuel conditioning system of claim 18, wherein the inlet filter includes a coalescing filter.24. The fuel conditioning system of claim 18, wherein the turbine filter includes a reverse flow coalescing filter.25. A fuel conditioning system for conditioning natural gas fuel provided by a pipeline to use with at least one natural gas fuel powered turbine, the conditioning system comprising:a inlet fuel module having a flow meter, inlet pressure monitoring instrument, inlet pressure regulator, inlet centrifugal scrubber, and inlet coalescing filter, the inlet fuel conditioning module reducing the pressure of the fuel and removing impurities from the fuel; a inlet distribution system transporting the fuel from the pipeline to the inlet fuel module; a turbine fuel module for each of the at least one turbines, the turbine fuel module having a turbine pressure monitoring instrument, a turbine pressure regulator, a super-heater, and a turbine coalescing filter, the turbine fuel conditioning module controlling the pressure of the natural gas fuel, heating the natural gas fuel and removing impurities from the natural gas fuel; a turbine distribution system transporting fuel from the inlet fuel conditioning module to at least one turbine fuel conditioning module; and a programmable logic controller for collecting data from the inlet fuel conditioning module and the turbine fuel conditioning module for use in controlling the inlet fuel module and turbine fuel module to provide fuel for each turbine.