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公开(公告)号:US11701742B2
公开(公告)日:2023-07-18
申请号:US17268638
申请日:2020-09-29
Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
Inventor: Zhiyong Liu , Baozhuang Sun , Xiaogang Li , Yedong He
CPC classification number: B23P6/007 , B23K15/0086 , G01N17/006
Abstract: A repair method for self-detecting and self-healing of corrosion defects in metals can achieve self-detecting and self-healing repair of an initial corrosion defect and be used to repair a micron-level corrosion defect. Furthermore, the self-detecting and self-healing repair method can be used to effectively repair an initial corrosion defect in a large-sized high-precision structural component, thus effectively improving the service safety of the high-precision metal structural component and prolonging the service life of the same.
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142.
公开(公告)号:US20230191482A1
公开(公告)日:2023-06-22
申请号:US17768737
申请日:2020-08-17
Applicant: University of Science and Technology Beijing
Inventor: Xin LU , Yu PAN , Yucheng YANG , Jiazhen ZHANG , Wei XU , Bowen LIU , Ce ZHANG , Jianzhuo SUN , Yanjun LIU , Xuanhui QU
CPC classification number: B22F3/1007 , B22F1/12 , B22F1/05 , B22F9/04 , B22F2009/043 , B22F2009/049 , B22F2201/11 , B22F2203/11 , B22F2301/205 , B22F2303/45
Abstract: The present invention provides a high-strength and high-plasticity titanium matrix composite and a preparation method thereof. The preparation method includes: preparing high-oxygen hydride-dehydride titanium powder using a high-temperature rotary ball grinding treatment process, in which the prepared hydride-dehydride titanium powder has a particle size of 10-40 μm, and has an oxygen content of 0.8-1.5 wt. %; preparing high-purity ultra-fine oxygen adsorbent powder using a wet grinding method of high-energy vibration ball grinding treatment process; in which a purity of the oxygen adsorbent powder is ≥99.9%, and a particle size of the oxygen adsorbent powder is ≤8 μm; mixing the high-oxygen hydride-dehydride titanium powder with the oxygen adsorbent powder in a protective atmosphere, and then press-forming the powder obtained after mixing to obtain a raw material blank; and performing atmosphere protective sintering treatment on the raw material blank to obtain a titanium matrix composite. The method prepares a titanium matrix composite reinforced by in-situ self-generating multi-scale Ca—Ti—O, TiC, TiB particles. The microstructure and grains are effectively refined, and the strength and plasticity of the material are significantly improved.
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公开(公告)号:US20230175705A1
公开(公告)日:2023-06-08
申请号:US18072862
申请日:2022-12-01
Applicant: University of Science and Technology Beijing
Inventor: Rang TU , Xu YANG , Xianzhong CHEN , Jingjing GAO
IPC: F24D3/10 , F24D19/10 , F24D13/04 , G05B19/042
CPC classification number: F24D3/105 , F24D19/1024 , F24D19/1012 , F24D13/04 , G05B19/042 , G05B2219/2614
Abstract: Disclosed is a heating device, including a first and second ends of an indoor water supply pipe communicated with a main water supply pipe and a water supply end of a radiator; a valve, a first temperature sensor, a heating and control module and a third temperature sensor arranged between the first and second ends; two ends of the heating and control module connected with a bypass pipe; a first and second ends of an indoor return water pipe communicated with a main return water pipe and a return water end of the radiator; a three-way valve and a second temperature sensor arranged between the first end and the second end of the indoor return water pipe; and a first and second ends of the water pump communicated with a third end of the three-way valve and the indoor water supply pipe.
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公开(公告)号:US11667982B2
公开(公告)日:2023-06-06
申请号:US17476501
申请日:2021-09-16
Inventor: Rong Zhu , Shaoyan Hu , Kai Dong , Rongfang Su , Weifeng Li
CPC classification number: C21C5/4606 , C21C5/30 , C21C5/48 , F27D3/16 , F27D2003/164 , F27D2003/168
Abstract: A long-life service method for powder-bottom-injecting converter based on collaborative hot replacement of furnace bottom and bottom purging brick belongs to the field of steelmaking technologies using powder-bottom-injecting converters. According to equipment characteristics, process characteristics, and erosion characteristics of the powder-bottom-injecting converter, the design, arrangement, installation, use, maintenance, and replacement of the bottom purging/powder injection bricks are systematically optimized and improved, a technology of automatically detecting the erosion height of bottom purging bricks is adopted, and hot replacement of bottom purging/powder injection bricks and hot replacement of the converter furnace bottom are used collaboratively, which not only can prolong the service life of a single bottom purging/powder injection brick, but also can greatly prolong the overall life of the powder-bottom-injecting converter from 1000-3000 heats in the prior art to 6000-10000 heats. Hence, the life of the powder-bottom-injecting converter is as long as that of a conventional converter.
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公开(公告)号:US20230140874A1
公开(公告)日:2023-05-11
申请号:US17900125
申请日:2022-08-31
Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING , NORTH CHINA INSTITUTE OF SCIENCE AND TECHNOLOGY , BEIJING ANKE TECHNOLOGY CO., LTD.
Inventor: Sitao Zhu , Xiaoguang Shang , Xiufeng Zhang , Longkai Hao , Chao Wang , Huadong Xie , Gang Yao , Shidong Li , Tao Zhou , Jinhai Liu , Xuyou Wang , Yitong Huang , Jiajie Li , Quande Wei
Abstract: A method for monitoring hydraulic fracturing range of a surface vertical shaft is provided by the present disclosure, belonging to the technical field of ultrahigh-pressure hydraulic fracturing monitoring of the coal mine vertical shafts. The method comprises the following steps: connecting, by an eight-thread communication cable, a high-precision portable micro-seismic monitoring acquisition instrument to a high-sensitivity deep hole sensor, and performing uphole-crosshole-downhole monitoring simultaneously, specifically as follows: providing uphole-crosshole-downhole monitoring holes respectively, and installing deep hole geophones in the monitoring holes; then laying communication cables uphole-crosshole-downhole to connect the geophones to the portable high-precision micro-seismic acquisition instrument respectively; then performing high-precision positioning on the fissure development range by monitoring recorded events and time, thus determining the directions and ranges of a main fracture and secondary induced fractures of hydraulic fractures.
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公开(公告)号:US20230110950A1
公开(公告)日:2023-04-13
申请号:US17806914
申请日:2022-06-14
Applicant: University of Science and Technology Beijing
Inventor: Haibin Zuo , Yajie Wang
IPC: C10L5/48 , C04B33/04 , C04B33/135 , C04B33/32 , C04B35/626 , C10L5/36 , C10L5/08
Abstract: Disclosed is a method for recycling a coal liquefaction residue. The method includes S1, drying a coal liquefaction residue and pulverizing to obtain a pulverized coal liquefaction residue; S2, subjecting the pulverized coal liquefaction residue to a solvothermal extraction in an autoclave to obtain an extract liquid and a residue; S3, distilling the extract liquid and recovering an organic solvent to obtain a solid extract.
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147.
公开(公告)号:US11613351B2
公开(公告)日:2023-03-28
申请号:US17743486
申请日:2022-05-13
Applicant: University of Science and Technology Beijing
Inventor: Wei He , Haifeng Huang , Jiubin Wang , Xinyue Tang , Xiuyu He , Qiang Fu , Yao Zou , Hui Zhang , Changyin Sun , Yaonan Wang
Abstract: A pull cord type turning mechanism for a butterfly-inspired flapping-wing aerial robot includes a motor, a cord reel, a cord reel gear, a potentiometer gear, a potentiometer, a control module, and a power supply. The control module is connected to the motor and the potentiometer. A rotary shaft of the motor is connected to the cord reel, the cord reel is coaxially connected to the cord reel gear, the cord reel gear is meshed with the potentiometer gear, and the potentiometer gear is connected to a rotary shaft of the potentiometer. The cord reel gear is provided with two cord grooves and two pull cords. One ends of the two pull cords are fixed in the two cord grooves, respectively, and the other ends thereof are fixed at the tips of front wings of two sides of the butterfly-inspired flapping-wing aerial robot, respectively.
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公开(公告)号:US11592842B1
公开(公告)日:2023-02-28
申请号:US17730232
申请日:2022-04-27
Applicant: University of Science and Technology Beijing
Inventor: Wei He , Xiaoyang Wu , Xinyue Tang , Qiang Fu , Yongbin Sun , Yao Zou , Xiuyu He , Hui Zhang , Changyin Sun , Yaonan Wang
Abstract: A flapping-wing aerial robot formation control method includes: determining a trailing vortex generation mechanism, an energy saving principle and a trailing vortex attenuation mechanism of the formation flight of a group of wild geese in accordance with the pattern of the formation flight of the group of wild geese; determining the formation flight of a group of flapping-wing aerial robots and a formation switching solution in accordance with the trailing vortex generation mechanism, energy saving principle and trailing vortex attenuation mechanism of the formation flight of the group of wild geese in conjunction with the flapping characteristic of a flapping-wing aerial robot from the perspective of energy consumption equalization and energy saving; and carrying out formation keeping control and formation reconfiguration control in accordance with the formation flight of the group of flapping-wing aerial robots and the formation switching solution by controlling positions of the group of flapping-wing aerial robots.
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149.
公开(公告)号:US11579038B2
公开(公告)日:2023-02-14
申请号:US17098475
申请日:2020-11-16
Applicant: University of Science and Technology Beijing
Inventor: Yi Zhou
IPC: G01M5/00 , G06F30/20 , G06F111/10
Abstract: A method for calculating a temperature-dependent mid-span vertical displacement of a girder bridge includes: setting a joint rotation of a main girder at each support as an unknown quantity, and establishing an equation according to a bending moment equilibrium condition at the joint; then introducing a sequence to establish a quantitative relationship between each unknown quantity; substituting the relationship into the equation, to obtain an analytical formula for a rotation at each joint; establishing an analytical formula for a bending moment at each joint through a principle of superposition; and finally, establishing an analytical formula for a mid-span vertical displacement of each span girder through a principle of virtual work. This method provides an analytical formula with exact solutions for prismatic girder bridges which have equal side spans yet have any number of spans.
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公开(公告)号:US20220417956A1
公开(公告)日:2022-12-29
申请号:US17537542
申请日:2021-11-30
Applicant: University of Science and Technology Beijing
Inventor: Haijun ZHANG , Wanqing GUAN , Dong WANG , Tongwei LU , Xiangming WEN , Keping LONG
Abstract: An Artificial Intelligence (AI) engine-supporting downlink radio resource scheduling method and apparatus are provided. The AI engine-supporting downlink radio resource scheduling method includes: constructing an AI engine, establishing a Socket connection between an AI engine and an Open Air Interface (OAI) system, and configuring the AI engine into an OAI running environment to utilize the AI engine to replace a Round-Robin scheduling algorithm and a fair Round-Robin scheduling algorithm adopted by a Long Term Evolution (LTE) at a Media Access Control (MAC) layer in the OAI system for resource scheduling to take over a downlink radio resource scheduling process; sending scheduling information to the AI engine through Socket during the downlink radio resource scheduling process of the OAI system; and utilizing the AI engine to carry out resource allocation according to the scheduling information, and returning a resource allocation result to the OAI system.
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