-
公开(公告)号：US12123362B2
公开(公告)日：2024-10-22
申请号：US18225427
申请日：2023-07-24
申请人： ROLLS-ROYCE plc
CPC分类号： F02C9/40 , F02C9/28 , F23R3/343 , F05D2220/323 , F05D2270/08 , F05D2270/306 , F05D2270/31 , F05D2270/71
摘要： An aircraft has first and second fuel sources containing fuels with different characteristics, and one or more gas turbine engines powered by the fuels and each having a staged combustion system having pilot and main fuel injectors and being operable in pilot-only and pilot-and-main ranges of operation. The gas turbine engines each have a fuel delivery regulator arranged to control fuel delivery to the pilot and main fuel injectors. The method includes: obtaining a proposed mission description; obtaining nvPM impact parameters for the gas turbine engines, the impact parameters being associated with each operating condition of the proposed mission; calculating an optimised set of one or more fuel characteristics for each flight condition of the proposed flight defined in the flight description based on the nvPM impact parameters; and determining a fuel allocation based on the optimised set of one or more fuel characteristics.
-
公开(公告)号：US20240309806A1
公开(公告)日：2024-09-19
申请号：US18120821
申请日：2023-03-13
发明人： Gregory Boardman
IPC分类号： F02C3/30
CPC分类号： F02C3/30 , F05D2220/32 , F05D2240/35 , F05D2270/08
摘要： An assembly is provided for a turbine engine. This assembly includes a combustor and an injection system. The combustor includes a combustion chamber. The injection system includes an injector. The injection system is configured to direct fluid and steam into the combustion chamber through the injector. The injection system is configured to modulate a flow of the fluid into the combustion chamber through the injector by regulating a flow of the steam into the combustion chamber through the injector.
-
公开(公告)号：US12031493B2
公开(公告)日：2024-07-09
申请号：US18162949
申请日：2023-02-01
申请人： ROLLS-ROYCE plc
发明人： Peter Swann
CPC分类号： F02C9/40 , F02C7/22 , F05D2220/323 , F05D2270/053 , F05D2270/08 , F05D2270/303
摘要： A system has first and second fuel stores for first and second fuels, an engine, a fuel distribution system, first and second flow rates of the fuel contributing to a total flow rate of fuel; and a controller for controlling the relative fractions of the total flow rate of fuel to the engine according to the required power output of the engine such that the relative fraction of the total flow rate of fuel to the engine represented by the second flow rate increases with increasing required power output of the engine. The fuels are selected such that using only the second fuel results in a lower engine temperature than using only the first fuel, for the same mechanical power and/or the second fuel has a lower specific energy than the first and/or the second fuel produces more water during combustion than the first fuel per unit of fuel energy.
-
公开(公告)号：US11821373B2
公开(公告)日：2023-11-21
申请号：US18053124
申请日：2022-11-07
申请人： ROLLS-ROYCE plc
发明人： Christopher P. Madden , Peter Swann
CPC分类号： F02C9/28 , F02C3/30 , F23R3/346 , F02C9/263 , F02C9/40 , F05D2270/08 , F05D2270/804
摘要： A gas turbine engine for an aircraft. The gas turbine comprises a staged combustion system having pilot injectors and main injectors, a fuel metering system configured to control fuel flow to the pilot injectors and the main injectors, and a fuel system controller. The controller is configured to identify an atmospheric condition, determine a ratio of pilot fuel flow rate for the pilot injectors to main fuel flow rate for the main injectors in response to the atmospheric condition, and inject fuel by the pilot injectors and the main injectors in accordance with said ratio to control an index of soot emissions caused by combustion of fuel therein.
-
公开(公告)号：US20190013756A1
公开(公告)日：2019-01-10
申请号：US16121163
申请日：2018-09-04
CPC分类号： H02P9/04 , E21B43/166 , F01D17/02 , F02C3/30 , F02C6/00 , F02C9/28 , F02C9/48 , F05D2220/32 , F05D2270/05 , F05D2270/08 , F05D2270/082 , H02K7/1823 , Y02E20/16 , Y02T50/677
摘要： A system includes a control system configured to control one or more parameters of an exhaust gas recirculation (EGR) gas turbine system to control a portion of electrical power for export from a generator driven by the turbine to an electrical grid. The control system includes a closed-loop controller configured to control parameters of the EGR gas turbine system and an open-loop controller configured to temporarily control the parameters of the EGR gas turbine system to increase the portion of the electrical power exported to the electrical grid to provide a Primary Frequency Response (PFR) in response to a transient event associated with the electrical power. The open-loop controller is configured to provide control signals to increase a concentration of an oxidant in a combustor to provide the PFR in response to the transient event when the EGR gas turbine system is operating in an emissions compliant mode.
-
公开(公告)号：US20180058317A1
公开(公告)日：2018-03-01
申请号：US15245244
申请日：2016-08-24
发明人： Jason Brian Shaffer , Alston Ilford Scipio , Sanji Ekanayake , Lewis Berkley Davis, JR. , Edwin Wu
CPC分类号： F02C3/305 , F01D25/002 , F02C3/04 , F02C3/30 , F05D2210/12 , F05D2270/08 , F23R3/28
摘要： A gas turbine injection system having a gas turbine with an inlet section, a compressor section, at least one combustor in a combustion section, and a turbine section is disclosed. Air supply piping, water supply piping, and chemical reactant supply piping is in fluid communication with the injection system. A mixing chamber is in fluid communication with at least one of the water supply piping, air supply piping, and the chemical reactant supply piping to produce a chemical mixture. Chemical mixture supply piping is in fluid communication with the mixing chamber and at least one spray nozzle configured to selectively combine the chemical mixture with the air and inject an atomized chemical mixture into at least one section of the turbine.
-
公开(公告)号：US09903279B2
公开(公告)日：2018-02-27
申请号：US13805646
申请日：2011-06-27
CPC分类号： F02C9/20 , F01K23/10 , F02C3/34 , F02C9/50 , F05D2270/08 , F05D2270/083 , Y02E20/16 , Y02T50/677
摘要： Provided are more efficient techniques for operating gas turbine systems. In one embodiment a gas turbine system comprises an oxidant system, a fuel system, a control system, and a number of combustors adapted to receive and combust an oxidant from the oxidant system and a fuel from the fuel system to produce an exhaust gas. The gas turbine system also includes a number of oxidant-flow adjustment devices, each of which are operatively associated with one of the combustors, wherein an oxidant-flow adjustment device is configured to independently regulate an oxidant flow rate into the associated combustor. An exhaust sensor is in communication with the control system. The exhaust sensor is adapted to measure at least one parameter of the exhaust gas, and the control system is configured to independently adjust each of the oxidant-flow adjustment devices based, at least in part, on the parameter measured by the exhaust sensor.
-
公开(公告)号：US09882454B2
公开(公告)日：2018-01-30
申请号：US14971736
申请日：2015-12-16
CPC分类号： H02K7/1823 , F02C9/00 , F02C9/28 , F05D2240/40 , F05D2270/08 , F05D2270/0831 , F05D2270/335 , G05B13/021 , G05B2219/39407
摘要： Various embodiments include a system having: at least one computing device configured to tune a set of gas turbines (GTs) by performing actions including: commanding each GT in the set of GTs to a base load level, based upon a measured ambient condition for each GT; commanding each GT in the set of GTs to adjust a respective power output to match a scaled power output value equal to a fraction of a difference between the respective power output and a nominal power output value, and measuring an actual emissions value for each GT during the adjusting of the respective power output; and adjusting an operating condition of each GT in the set of GTs based upon a difference between the respective measured actual emissions value, a nominal emissions value at the ambient condition and a nominal emissions value at the ambient condition.
-
公开(公告)号：US09851106B2
公开(公告)日：2017-12-26
申请号：US15125475
申请日：2015-03-25
发明人： Annika Lindholm , Joachim Nordin
IPC分类号： F16K11/07 , F23R3/28 , F02C7/232 , F23K5/14 , F16K11/065
CPC分类号： F23R3/28 , F02C7/232 , F05D2260/96 , F05D2270/08 , F05D2270/14 , F16K11/0655 , F16K11/07 , F23K5/147
摘要： A fuel injector for injecting fuel in a burner of a gas turbine where the fuel injector has a body with an inner hole and a valve element which is slideably arranged inside the inner hole. The body has a fuel inlet which is formed into the body for injecting fuel into the inner hole, wherein the fuel inlet is coupleable to a fuel supply line. The body further has a first outlet channel connected to the inner hole, wherein the first outlet channel is further coupleable to a burner. The valve element has a first passage which is formed such that in a first position of the valve element inside the inner hole, the first passage connects the fuel inlet with the first outlet channel and in a second position of the valve element inside the inner hole.
-
公开(公告)号：US09639071B2
公开(公告)日：2017-05-02
申请号：US14149349
申请日：2014-01-07
发明人： Prabhanjana Kalya , Steven William Backman , Laura Lea Boes , David Spencer Ewens , Trevor Valder Jones
CPC分类号： G05B15/00 , F02C7/228 , F02C9/00 , F02C9/28 , F02C9/34 , F05D2270/08 , F05D2270/082 , F23N2037/02 , F23N2041/20 , F23R3/34
摘要： A method and system for transferring between combustion modes in a gas turbine engine is provided. A processor generates data representative of an initial set of splits for providing at least one of fuel and air to at least one combustor in the gas turbine engine. A gas turbine engine model module generates data representative of at least one engine operating condition. A first split calculation module generates data representative of at least one set of active control splits to control the engine in a first combustion mode, using as an input the initial split data. A second split calculation module generates data representative of at least one set of passive control splits to control the engine in at least a second combustion mode. Transfer between combustion modes may be accomplished via use of at least one of the active control splits and the passive control splits.
-
-
-
-
-
-
-
-
-
搜索结果
261 条记录 (耗时 0.032 秒)
