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公开(公告)号：US09880527B2
公开(公告)日：2018-01-30
申请号：US14750330
申请日：2015-06-25
发明人： Guoxin Li , R. Sheldon Carpenter
CPC分类号： G05B13/026 , F01D17/06 , F01D17/085 , F02C9/28 , F05D2220/32 , F05D2240/24 , F05D2260/80 , F05D2270/03 , F05D2270/301 , F05D2270/44
摘要： A method of tracking variable states of a gas turbine engine in transient conditions includes obtaining input data representative of rotor velocity and pressure ratio; calculating a reference transient scheduled trajectory based on the input data; calculating a speed reference transient scheduled trajectory based on the input data; calculating a feedforward variable based on the reference transient scheduled trajectory; obtaining a feedback control variable; and determining a control variable based on a combination of the feedforward variable and the feedback control variable.
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公开(公告)号：US09845734B2
公开(公告)日：2017-12-19
申请号：US13090905
申请日：2011-04-20
申请人： Peter Kenneth Zeiner , Dave Oman , Jimmy Wiggins
发明人： Peter Kenneth Zeiner , Dave Oman , Jimmy Wiggins
CPC分类号： F02C7/277 , F01D17/06 , F01D19/00 , F05D2260/40311 , F05D2260/80 , F05D2260/85 , F05D2270/304 , F05D2270/44 , F05D2270/54 , F05D2270/65
摘要： An air turbine start system is provided that includes an air turbine starter, a starter air valve, a turbine speed sensor, and a circuit. The starter air valve is movable between an open position, in which the pressurized air may flow into the air turbine starter, and a closed position, in which pressurized air does not flow into the air turbine starter. The turbine speed sensor is coupled to the air turbine starter, and is configured to sense the rotational speed of the turbine and supply a rotational speed signal representative thereof. The circuit is coupled to receive the rotational speed signal and is configured, upon receipt thereof, to determine whether the starter air valve is in the closed position or an open position.
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13.发明申请公开(公告)号：US20170328231A1
公开(公告)日：2017-11-16
申请号：US14640060
申请日：2015-03-06
发明人： Walter A. Ledwith, JR. , Scott A. Carr , Christopher J. Hanlon , Peter A. White , Theodore W. Hall , John R. Farris , Andrew S. Miller , Christopher W. Robak , David C. Pimenta , David Richard Griffin
CPC分类号： F02C3/055 , F01D11/24 , F02C7/185 , F05D2260/213 , F05D2270/20 , F05D2270/44 , Y02T50/676
摘要： A method of assembling a gas turbine engine includes setting a build clearance at assembly in response to a running tip clearance defined with a cooled cooling air. A method of operating a gas turbine engine includes supplying a cooled cooling air to a high pressure turbine in response to an engine rotor speed.
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公开(公告)号：US20170292399A1
公开(公告)日：2017-10-12
申请号：US15096346
申请日：2016-04-12
CPC分类号： F01D17/145 , B64D27/10 , F01D5/02 , F01D11/24 , F01D25/24 , F05D2220/323 , F05D2270/114 , F05D2270/20 , F05D2270/303 , F05D2270/304 , F05D2270/305 , F05D2270/309 , F05D2270/335 , F05D2270/44
摘要： Aspects of the disclosure are directed to systems and methods for receiving operating state parameters associated with an operative state of an aircraft, determining a clearance value between a first structure of the engine and a second structure of the engine, where the clearance value is determined based on the operating state parameters and a passive clearance model that includes a specification of an uncertainty in the clearance value, determining that the clearance value deviates from a clearance target in an amount that is greater than a threshold, and engaging an active clearance control (ACC) mechanism based on the deviation.
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公开(公告)号：US09784183B2
公开(公告)日：2017-10-10
申请号：US14546504
申请日：2014-11-18
CPC分类号： F02C3/305 , F02C9/26 , F02C9/48 , F05D2260/821 , F05D2270/44
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 output to match a nominal mega-watt power output value, and subsequently measuring an actual fuel flow value and an actual emissions value for each GT; adjusting at least one of a fuel flow or a water flow for each GT to an adjusted water/fuel ratio in response to the actual emissions value deviating from an emissions level associated with the base load level, while maintaining the respective adjusted output; and adjusting an operating condition of each GT in the set of GTs based upon a difference between the respective measured actual fuel flow value and a nominal fuel flow value at the ambient condition, while maintaining the adjusted water/fuel ratio.
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公开(公告)号：US09777633B1
公开(公告)日：2017-10-03
申请号：US15084966
申请日：2016-03-30
CPC分类号： F02C7/057 , B64D27/10 , B64D31/06 , F02C3/06 , F02C3/14 , F02C7/042 , F05D2210/44 , F05D2220/323 , F05D2270/101 , F05D2270/102 , F05D2270/3011 , F05D2270/44 , F05D2270/54
摘要： Systems and methods for adjusting airflow distortion in a gas turbine engine using a secondary airflow passage assembly are disclosed. A gas turbine engine can include a compressor section, a combustion section, and a turbine section in series flow and defining at least in part an engine airflow path. A casing can enclose the gas turbine engine and be at least partially exposed to a bypass airflow. The gas turbine engine can further include a secondary airflow passage assembly comprising a door and a duct, the duct defining an inlet located on the casing, the duct defining an outlet in airflow communication with the engine airflow path, the duct comprising an airflow passage extending between the inlet and outlet. The door can be moveable between an open and closed position to allow a portion of the bypass airflow to flow through the airflow passage to adjust airflow distortion.
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公开(公告)号：US09771825B2
公开(公告)日：2017-09-26
申请号：US14531293
申请日：2014-11-03
发明人： Yasuhiro Yoshida , Takuya Yoshida , Tatsuro Yashiki , Yukinori Katagiri , Eunkyeong Kim , Kenichiro Nomura , Kazunori Yamanaka , Fumiyuki Suzuki , Norihiro Iyanaga
CPC分类号： F01D19/02 , F01K7/165 , F01K13/02 , F05D2260/821 , F05D2270/44 , F22B35/00
摘要： Provided is a steam turbine plant activation control device that can flexibly handle an initial state amount of a steam turbine plant and activate a steam turbine at a high speed. The activation control device 21 for the steam turbine plant includes a heat source device 1 configured to heat a low-temperature fluid using a heat source medium and generate a high-temperature fluid, a steam generator 2 for generating steam by thermal exchange with the high-temperature fluid, a steam turbine 3 to be driven by the steam, and adjusters 11, 12, 13, 14, 15 configured to adjust operation amounts of the plant.
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公开(公告)号：US20170260988A1
公开(公告)日：2017-09-14
申请号：US15451697
申请日：2017-03-07
发明人： Do Hyung KIM
CPC分类号： F04D27/0246 , F04D27/02 , F04D27/0215 , F04D27/0223 , F05D2270/101 , F05D2270/44
摘要： A compressor control system includes a compressor compressing a fluid, an anti-surge valve preventing backflow in the compressor, the anti-surge valve being arranged on a line connecting an inlet and an outlet of the compressor and operated by a first signal, an inlet guide vane controlling an opening area of the inlet, the inlet guide vane being arranged at the inlet and operated by a second signal, and a controller connected to the anti-surge valve and the inlet guide vane and generating the first signal to control the anti-surge valve, a vane control signal to control the inlet guide vane, a pressure compensation signal to control the inlet guide vane to compensate for a change in pressure at the outlet of the compressor according to the first signal, and the second signal by combining the pressure compensation signal with the vane control signal.
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公开(公告)号：US20170175648A1
公开(公告)日：2017-06-22
申请号：US14971721
申请日：2015-12-16
发明人： Harold Lamar Jordan, JR. , Lewis Berkley Davis, JR. , Scott Arthur Day , David Spencer Ewens , Rex Allen Morgan
IPC分类号： F02C9/28
CPC分类号： F02C9/28 , F02C9/42 , F05D2220/32 , F05D2270/082 , F05D2270/13 , F05D2270/44
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 nominal power output value, and subsequently measuring an actual emissions value for each GT; adjusting an operating condition of each GT in the set of GTs based upon a difference between the respective measured actual emissions value and a nominal emissions value at the ambient condition; and setting a target operating condition for each GT to match the adjusted operating condition after the adjusting of the operating condition.
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公开(公告)号：US20170058836A1
公开(公告)日：2017-03-02
申请号：US15348691
申请日：2016-11-10
CPC分类号： F02K9/566 , B64G1/401 , F02K9/50 , F02K9/52 , F02K9/56 , F02K9/60 , F02K9/96 , F05D2220/80 , F05D2270/44 , F05D2270/54
摘要： A feed system for feeding a rocket engine with a liquid propellant includes a feed circuit, and a device to vary a volume of gas in the feed circuit. The device is configured to cause a volume of gas in the feed circuit to vary while the rocket engine is in operation. The device to vary gas volume includes at least one variable-flow-rate gas injector to inject gas into the liquid propellant in the feed circuit. Methods of suppressing a POGO effect are also provided.
摘要翻译： 用于向液体推进剂供给火箭发动机的进料系统包括进料回路和用于改变进料回路中气体体积的装置。 该装置被配置成在火箭发动机运行时使进料回路中的一定量的气体变化。 改变气体体积的装置包括至少一个可变流量气体注射器，以将气体注入进料回路中的液体推进剂。 还提供了抑制POGO效应的方法。
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