公开(公告)号：US12123432B2

公开(公告)日：2024-10-22

申请号：US18201875

申请日：2023-05-25

申请人： RAYTHEON TECHNOLOGIES CORPORATION ,  MTU Aero Engines AG

发明人： Bruce L. Morin ,  Detlef Korte

IPC分类号： F02C7/36 ,  F01D5/06 ,  F01D5/14 ,  F01D15/12 ,  F01D25/24 ,  F02C3/04 ,  F02C3/107 ,  F02K3/04 ,  F02K3/06 ,  F04D25/04 ,  F04D29/053 ,  F04D29/32 ,  F04D29/66 ,  G06F30/17

CPC分类号： F04D29/663 ,  F01D5/06 ,  F01D5/14 ,  F01D15/12 ,  F01D25/24 ,  F02C3/04 ,  F02C3/107 ,  F02C7/36 ,  F02K3/04 ,  F02K3/06 ,  F04D25/045 ,  F04D29/053 ,  F04D29/321 ,  F04D29/325 ,  G06F30/17 ,  F05D2220/323 ,  F05D2230/50 ,  F05D2260/40311 ,  F05D2260/96 ,  F05D2270/304 ,  F05D2270/333

摘要： An aircraft system includes, among other things, an aircraft and a gas turbine engine coupled to the aircraft. The gas turbine engine includes a propulsor section including a propulsor, a compressor section, a turbine section including a first turbine and a second turbine, and a gear reduction between the propulsor and the second turbine. The second turbine includes a number of turbine blades in each of a plurality of rows of the second turbine. The second turbine blades operating at least some of the time at a rotational speed. The number of blades and the rotational speed being such that the following formula holds true for a majority of the blade rows of the second turbine: 5500 Hz≤(number of blades×speed)/60 sec≤10000 Hz. The gas turbine engine is rated to produce 15,000 pounds of thrust or more.

公开(公告)号：US12098644B2

公开(公告)日：2024-09-24

申请号：US18056032

申请日：2022-11-16

申请人： PRATT & WHITNEY CANADA CORP.

发明人： Keith Morgan ,  Eric Durocher

IPC分类号： F02C3/08 ,  B64C27/12 ,  B64D27/10 ,  B64D35/04 ,  F01D13/02 ,  F01D15/12 ,  F01D17/16 ,  F02C6/02 ,  F02C6/20 ,  F02C7/36 ,  F02C9/56

CPC分类号： F01D13/02 ,  B64C27/12 ,  B64D27/10 ,  B64D35/04 ,  F01D15/12 ,  F01D17/162 ,  F02C6/02 ,  F02C6/20 ,  F02C7/36 ,  F02C9/56 ,  F05D2220/329 ,  F05D2240/12 ,  F05D2240/60 ,  F05D2260/4031

摘要： A turboshaft engine for a rotorcraft includes a first spool and an independently rotatable second spool. The first spool includes a low pressure compressor, a first set of variable guide vanes disposed at an entry of the low pressure compressor, and a low pressure turbine drivingly engaged to the low pressure compressor. The second spool includes a high pressure compressor, a second set of variable guide vanes disposed at an entry of the high pressure compressor, the second set of variable guide vanes independently operable relative to the first set of variable guide vanes, and a high pressure turbine drivingly engaged to the high pressure compressor. One or both of the low pressure compressor and the high pressure compressor includes a mixed flow rotor.

公开(公告)号：US20240253798A1

公开(公告)日：2024-08-01

申请号：US18417339

申请日：2024-01-19

申请人： Airbus SAS ,  Airbus Operations SAS

发明人： Jean-François ALLIAS ,  Damien MARIOTTO

IPC分类号： B64D27/35 ,  B64D35/021 ,  B64D35/08 ,  F01D15/02 ,  F01D15/12

CPC分类号： B64D27/35 ,  B64D35/021 ,  B64D35/08 ,  F01D15/02 ,  F01D15/12 ,  F05D2260/40

摘要： An electrical propulsion assembly that includes: a propeller that has a rotation axis, at least two electric motors offset relative to one another in a longitudinal direction parallel to the rotation axis of the propeller, a main drive shaft parallel to the rotation axis of the propeller to which the electric motor are coupled, a transmission system including an output shaft connected to the propeller and an input shaft connected to the main drive shaft. Also an aircraft including at least one such electrical propulsion assembly.

公开(公告)号：US20240183283A1

公开(公告)日：2024-06-06

申请号：US18553819

申请日：2022-03-31

申请人： SAFRAN HELICOPTER ENGINES

发明人： Loïs Pierre Denis VIVE ,  Thomas DROUIN ,  Olivier BEDRINE

IPC分类号： F01D15/12 ,  B64D27/10 ,  F02C7/268 ,  F02C7/32

CPC分类号： F01D15/12 ,  B64D27/10 ,  F02C7/268 ,  F02C7/32 ,  F05D2220/76

摘要： A turbomachine including a gas generator endowed with a first shaft, a gear box, at least one reversible electric machine coupled to the gear box, and a free turbine endowed with a second shaft and rotationally driven by a gas stream of the gas generator and at least one accessory coupled to the accessory gear box, wherein the turbomachine includes a first mechanical coupling means configured to mechanically couple said first mechanical shaft to the accessory gear box in a first configuration and to mechanically uncouple said first mechanical shaft from the accessory gear box in a second configuration, and a second mechanical coupling means configured to mechanically couple said second mechanical shaft to the accessory gear box in a first configuration and to mechanically uncouple said second mechanical shaft from the accessory gear box in a second configuration.

公开(公告)号：US20240183281A1

公开(公告)日：2024-06-06

申请号：US18075148

申请日：2022-12-05

申请人： Hamilton Sundstrand Corporation

发明人： Viktor Kilchyk ,  Brent J. Merritt

IPC分类号： F01D15/12 ,  F25B9/00 ,  F25B9/06

CPC分类号： F01D15/12 ,  F25B9/004 ,  F25B9/06

摘要： An air cycle machine includes a turbine section, a compressor section, and an axial flux magnetic gear system electromechanically coupling the turbine section to the compressor section. The axial flux magnetic gear system includes a stator, two rotors, a winding system, and a control module. The stator includes stator pole sections and is oriented about a stator axis. Each rotor includes magnets arranged radially about a rotational axis which is aligned with the stator axis. Each rotor interacts with the stator such that the rotor rotates at a rotational speed when the axial flux magnetic gear system is exposed to an electrical current. The winding system stabilizes the position of the rotors along their rotational axes. The control module is configured to supply the electrical current to at least one of the winding system, the stator, and the rotors to drive rotation of the rotors.

公开(公告)号：US11946540B2

公开(公告)日：2024-04-02

申请号：US17895301

申请日：2022-08-25

申请人： RAYTHEON TECHNOLOGIES CORPORATION

发明人： Janice Jabido ,  Michael E. McCune

IPC分类号： F16H57/04 ,  F01D15/12 ,  F01D25/18 ,  F02K3/02 ,  F16H1/28 ,  F16H57/08

CPC分类号： F16H57/0427 ,  F01D15/12 ,  F01D25/18 ,  F02K3/025 ,  F16H1/28 ,  F16H57/0442 ,  F16H57/0479 ,  F16H57/0486 ,  F16H57/082

摘要： A fan drive gear system for a turbofan engine according to an exemplary embodiment of this disclosure, among other possible things includes a sun gear that is rotatable about an axis, a plurality of intermediate gears driven by the sun gear, and a baffle that is disposed between at least two of the plurality of intermediate gears for defining a lubricant flow path from an interface between the sun gear and at least one of the plurality of intermediate gears. The baffle includes a channel with at least one ramp portion directing lubricant.

公开(公告)号：US11852040B2

公开(公告)日：2023-12-26

申请号：US18326742

申请日：2023-05-31

申请人： HAINAN JIRUI HAOHAN POWER SYSTEM TECHNOLOGY CO., LTD.

发明人： Zhen Zhao

IPC分类号： F01K13/02 ,  F01D15/10 ,  F01D15/12

CPC分类号： F01K13/02 ,  F01D15/10 ,  F01D15/12 ,  F05D2220/31 ,  F05D2260/40

摘要： A method of automatic load regulation, operation and protection for steam turbine and motor combined drive and power generation in converter saturated steam utilization, which relates to the technical field of low-pressure saturated steam utilization, to solve the problems of steam instability, low energy utilization efficiency, and unstable system operation in existing technique. Technical points: S1. setting engagement speed; S2. speed control mode; S3. switching to a valve control mode after successfully engagement; S4. valve position automatic mode activation; S5. entering automatic mode; S6. reducing the valve position adjustment rate; S7. reading, by the DCS of the drive steam turbine system, the comprehensive thermal storage index value and the preset valve position corresponding to the thermal storage value; adjusting the valve position to the valve position corresponding to the read heat storage value.

公开(公告)号：US20230358127A1

公开(公告)日：2023-11-09

申请号：US18353342

申请日：2023-07-17

申请人： YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD.

发明人： Dekun TIAN ,  Tao KOU ,  Wanchun CHA ,  Zhijie LIU ,  Xin LI ,  Jianglei ZOU ,  Libin ZHOU ,  Xu LIU ,  Zhuqing MAO ,  Rikui ZHANG ,  Peng ZHANG ,  Jianwei WANG ,  Jihua WANG ,  Xiaolei JI ,  Xincheng LI ,  Yuxuan SUN ,  Yipeng WU ,  Chunqiang LAN ,  Liang LV

IPC分类号： F01D15/08 ,  E21B43/26 ,  F04B17/05 ,  F04B49/06 ,  F01D15/12 ,  F04B49/02

CPC分类号： E21B43/2607 ,  F01D15/08 ,  F01D15/12 ,  F04B17/05 ,  F04B49/02 ,  F04B49/065

摘要： A gas turbine overspeed protection method includes: a power utilization load of a generator is acquired, and a rotating speed value of a gas turbine is acquired; whether the power utilization load suddenly decreases or disappears is judged, and if so, an eddy current retarder is controlled by a controller to simulate the power utilization load to provide a braking torque for the generator; or, whether the rotating speed value exceeds a set speed range is judged, and if so, the gas turbine is controlled by the controller to reduce fuel supply, and a discharge valve of a gas compressor is opened to discharge a high-pressure gas to reduce the power output and the rotating speed of the gas turbine.

公开(公告)号：US20230332546A1

公开(公告)日：2023-10-19

申请号：US17721642

申请日：2022-04-15

申请人： Raytheon Technologies Corporation

发明人： Paul R. Hanrahan ,  Daniel B. Kupratis ,  David Allen Stachowiak

IPC分类号： F02C7/32 ,  F01D15/08 ,  F01D15/10 ,  F01D15/12 ,  F02C7/36 ,  F02K3/06 ,  F02C7/268

CPC分类号： F02C7/32 ,  F01D15/08 ,  F01D15/10 ,  F01D15/12 ,  F02C7/36 ,  F02K3/06 ,  F02C7/268 ,  F05D2220/323 ,  F05D2260/40311

摘要： A gas turbine engine includes a high speed turbine and a high speed compressor connected by a high speed shaft to define a high speed spool. A low speed turbine and a low speed compressor are connected by a low speed shaft to define a low speed spool. A high speed tower shaft is driven by the high speed spool and a low speed tower shaft is driven by the low speed spool. The low speed tower shaft drives a low speed input gear in an accessory drive differential. The high speed tower shaft drives a high speed input gear in the accessory drive differential. One of the high speed input gear and the low speed input gear increases an output speed of an output gear, and the other decreases an output speed of the output gear. The output gear drives at least one accessory for the gas turbine engine.

公开(公告)号：US20230304421A1

公开(公告)日：2023-09-28

申请号：US18326742

申请日：2023-05-31

申请人： HAINAN JIRUI HAOHAN POWER SYSTEM TECHNOLOGY CO., LTD.

发明人： Zhen ZHAO

IPC分类号： F01D15/12 ,  F01D15/10 ,  F01K13/02

CPC分类号： F01D15/12 ,  F01D15/10 ,  F01K13/02 ,  F05D2220/31 ,  F05D2260/40

摘要： A method of automatic load regulation, operation and protection for steam turbine and motor combined drive and power generation in converter saturated steam utilization, which relates to the technical field of low-pressure saturated steam utilization, to solve the problems of steam instability, low energy utilization efficiency, and unstable system operation in existing technique. Technical points: S1. setting engagement speed; S2. speed control mode; S3. switching to a valve control mode after successfully engagement; S4. valve position automatic mode activation; S5. entering automatic mode; S6. reducing the valve position adjustment rate; S7. reading, by the DCS of the drive steam turbine system, the comprehensive thermal storage index value and the preset valve position corresponding to the thermal storage value; adjusting the valve position to the valve position corresponding to the read heat storage value.