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다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0726001 (2015-05-29) |
등록번호 | US-9885290 (2018-02-06) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 1 인용 특허 : 525 |
In an embodiment, a method includes flowing an exhaust gas from a turbine of a gas turbine system to an exhaust gas compressor of the gas turbine system via an exhaust recirculation path; evaluating moist flow parameters of the exhaust gas within an inlet section of the exhaust gas compressor using
In an embodiment, a method includes flowing an exhaust gas from a turbine of a gas turbine system to an exhaust gas compressor of the gas turbine system via an exhaust recirculation path; evaluating moist flow parameters of the exhaust gas within an inlet section of the exhaust gas compressor using a controller comprising non-transitory media programmed with instructions and one or more processors configured to execute the instructions; and modulating cooling of the exhaust gas within the exhaust recirculation path, heating of the exhaust gas within the inlet section of the exhaust gas compressor, or both, based on the evaluation.
1. A gas turbine system, comprising: an exhaust gas compressor, comprising: an inlet section fluidly coupled to a turbine expander via an exhaust gas recirculation path;a detection system comprising at least one non-intrusive measurement device coupled to the inlet section, wherein the at least one
1. A gas turbine system, comprising: an exhaust gas compressor, comprising: an inlet section fluidly coupled to a turbine expander via an exhaust gas recirculation path;a detection system comprising at least one non-intrusive measurement device coupled to the inlet section, wherein the at least one non-intrusive measurement device is configured to generate a first feedback relating to moisture contained within an exhaust gas flowing through the inlet section, wherein the at least one non-intrusive measurement device comprises a water droplet size and flux measurement system; anda controller communicatively coupled to the detection system and comprising non-transitory media programmed with one or more sets of instructions, and one or more processing devices configured to execute the one or more sets of instructions such that the controller is configured to: evaluate the first feedback for one or more indications of condensation of the moisture within the exhaust gas as the exhaust gas flows through the exhaust gas compressor; andprovide a user-perceivable indication for a first corrective action to be taken if the one or more indications are indicative of moisture condensation outside of a first predetermined condensation range; orperform a second corrective action if the one or more indications are indicative of moisture condensation outside of a second predetermined condensation range. 2. The gas turbine system of claim 1, comprising an exhaust gas cooler positioned along the exhaust gas recirculation path and coupled to a cooling medium source via a cooling medium flow path, and wherein the controller is communicatively coupled to a cooling medium flow control device to enable the controller to adjust cooling of the exhaust gas within the exhaust recirculation path as all or a part of the first corrective action, the second corrective action, or a combination thereof. 3. The gas turbine system of claim 1, wherein the exhaust gas compressor comprises a heat exchanger disposed within the inlet section, the heat exchanger being in fluid communication with a heating medium source via a heating medium flow path, and wherein the controller is communicatively coupled to a heating medium flow control device to enable the controller to adjust heating of the exhaust gas within the inlet section as all or a part of the first corrective action, the second corrective action, or a combination thereof. 4. The gas turbine system of claim 3, wherein the heating medium source is a compression stage or a compressor discharge of the exhaust gas compressor, or both, the heating medium flow path is an inlet bleed heat flow path, a heating medium is compressed exhaust gas, and the heat exchanger is a manifold configured to distribute the compressed exhaust gas within the inlet section. 5. The gas turbine system of claim 3, wherein the heating medium source is an exhaust gas supply system comprising: an exhaust extraction system configured to extract a heated exhaust gas from a combustor of the gas turbine system; andan exhaust gas compression and dehydration system configured to produce a product gas from the extracted heated exhaust gas, wherein the product gas is a heating medium. 6. The gas turbine system of claim 1, comprising an electric heating coil disposed within the inlet section of the exhaust gas compressor and configured to heat the exhaust gas within the inlet section, wherein the controller is communicatively coupled to the electric heating coil to enable the controller to adjust heating of the exhaust gas within the inlet section as all or a part of the first corrective action, the second corrective action, or a combination thereof. 7. The gas turbine system of claim 1, comprising: a cooling system positioned within the exhaust recirculation path and configured to cool exhaust gas within the exhaust recirculation path; anda heating system positioned within the inlet section, wherein the cooling and heating systems are controllably connected to the controller; andwherein the detection system comprises a dewpoint detection system, a dry bulb thermometer, and the water droplet size and flux measurement system, and the controller is configured to modulate the cooling and heating systems based on an evaluation of outputs of any one or a combination of the dewpoint detection system, the dry bulb thermometer, and the water droplet size and flux measurement system. 8. The gas turbine system of claim 7, wherein the controller is configured to use a transfer function for the respective outputs of the dewpoint detection system, the dry bulb thermometer, and the water droplet size and flux measurement system to derive a projected droplet size and density at an inlet guide vane (IGV) region of the inlet section of the exhaust gas compressor, and the controller is configured to modulate the cooling and heating systems in order to maintain the projected droplet size and density at the inlet guide vane (IGV) region of the inlet section of the exhaust gas compressor within a predetermined droplet size and density range. 9. The gas turbine system of claim 7, comprising a surfactant dispersal system configured to inject a surfactant into the exhaust gas within the inlet section of the exhaust gas compressor, wherein the surfactant dispersal system is controllably coupled to the controller, and the controller is configured to modulate injection of the surfactant into the exhaust gas in order to maintain the projected droplet size and density at the inlet guide vane (IGV) region of the inlet section of the exhaust gas compressor within a predetermined droplet size and density range. 10. The gas turbine system of claim 7, wherein the evaluation of the outputs of any one or a combination of the dewpoint detection system, the dry bulb thermometer, and the water droplet size and flux measurement system is based at least partially on a model relating a projected size and density of water droplets at the inlet guide vane (IGV) region of the inlet section of the exhaust gas compressor to compressor airfoil durability. 11. A gas turbine system, comprising: an exhaust recirculation path extending from a turbine outlet to an exhaust gas compressor;an exhaust gas cooling system positioned along the exhaust recirculation path and configured to cool exhaust gas within the exhaust recirculation path;a detection system comprising a water droplet size and flux measurement system positioned downstream of the exhaust gas cooling system and upstream of inlet guide vanes of the exhaust gas compressor, wherein the water droplet size and flux measurement system is configured to measure a droplet size and density of water within the exhaust gas, wherein the detection system comprises a non-intrusive device coupled to an inlet section of the exhaust gas compressor; anda direct contact heating system positioned between the exhaust gas cooling system and the water droplet size and flux measurement system, wherein the direct contact heating system is configured to heat the exhaust gas;a controller communicatively coupled to the water droplet size and flux measurement system, the exhaust gas cooling system, and the direct contact heating system, wherein the controller comprises non-transitory media programmed with instructions that are executable by a processor of the controller such that the controller is configured to monitor the droplet size and/or density of water within the exhaust gas, and modulate cooling of the exhaust gas by the exhaust gas cooling system, modulate heating of the exhaust gas by the direct contact heating system, or both, based at least partially on the monitored droplet size and/or density of water within the exhaust gas. 12. The gas turbine system of claim 11, wherein the water droplet size and flux measurement system is positioned at an inlet plenum of the exhaust gas compressor or at a bellmouth strut of the exhaust gas compressor. 13. The gas turbine system of claim 11, wherein the direct contact heating system comprises a manifold disposed within inlet ducting of the exhaust gas compressor and a flow path configured to flow an inlet bleed heat from compressed exhaust gas extracted from a compression stage or a compressor discharge of the exhaust gas compressor to the manifold, wherein the controller is communicatively coupled to a flow control device positioned along the flow path to enable the controller to control the flow of inlet bleed heat into the exhaust gas. 14. The gas turbine system of claim 11, wherein the direct contact heating system comprises a resistive coil disposed within inlet ducting of the exhaust gas compressor, wherein the resistive coil is communicatively coupled to the controller to enable the controller to modulate heating by the resistive coil. 15. The gas turbine system of claim 11, wherein the detection system comprises a dewpoint temperature measurement system and a dry bulb thermometer positioned between the exhaust cooling system and the water droplet size and flux measurement system, wherein the dewpoint temperature measurement system and the dry bulb thermometer are communicatively coupled to the controller, and the controller is configured to use measurement outputs of the dewpoint temperature measurement system, the dry bulb thermometer, and the water droplet size and flux measurement system with a transfer function, to derive a projected droplet size and density for water within the exhaust gas at an inlet guide vane plane of the exhaust gas compressor in order to minimize erosion of airfoils of the exhaust gas compressor as a result of moisture condensation.
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