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91.
公开(公告)号:US20230417943A1
公开(公告)日:2023-12-28
申请号:US17940005
申请日:2022-09-08
Applicant: University of Science and Technology Beijing
Inventor: Dazhao SONG , Yuqing CHENG , Xueqiu HE , Menghan WEI , Yongjun TONG
IPC: G01V3/08
CPC classification number: G01V3/081
Abstract: A method of locating a failure of coal-rock-concrete based on vector features of a near-field electromagnetic field is provided. The method senses and records the real electromagnetic field vector information in space by arranging a triaxial electromagnetic sensor array around a coal-rock-concrete body, and realizes the localization of the failure areas of the coal-rock-concrete body by establishing an electromagnetic radiation localization model for the failures of the coal-rock concrete body. The electromagnetic radiation localization model for the failures of the coal-rock concrete body approximates the radiation source of electromagnetic radiation generated by failures as a dipole with a dipole moment, so as to realize the localization of a large number of relatively small-intensity failures during the disaster incubation stage and evolution process, realize the monitoring and early warning of the final disaster locations, and further improve the reliability of electromagnetic radiation positioning technology.
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公开(公告)号:US20230408398A1
公开(公告)日:2023-12-21
申请号:US17936946
申请日:2022-09-30
Applicant: University of Science and Technology Beijing
Inventor: Dawei Zhang , Lingwei Ma , Chenhao Ren , Jinke Wang , Xiaogang LI
IPC: G01N17/00
CPC classification number: G01N17/006
Abstract: The present disclosure discloses a process for evaluating a corrosion inhibitor based on a high-throughput corrosion chip. In the present disclosure, a high-throughput corrosion chip is first prepared by using a chip spotter, and only a corrosion inhibitor and a corrosive substance need to be spotted on a metal sample to quickly, efficiently, and accurately evaluate performance of a corrosion inhibitor formulation, to meet corrosion test conditions such as different substances, different concentrations, and different corrosion duration; and then a corrosion degree of each measurement point in the high-throughput corrosion chip is identified and quantified by using a laser scanning confocal microscope. The high-throughput corrosion chip prepared by using the foregoing method can bear 10-1000 measurement points, and these measurement points can reflect corrosion effects of different inhibitor formulations in different corrosion duration.
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93.
公开(公告)号:US20230358123A1
公开(公告)日:2023-11-09
申请号:US18143660
申请日:2023-05-05
Applicant: University of Science and Technology Beijing , Beijing Zhongke Zhishang Technology Co., Ltd.
Inventor: Hongqing SONG , Shuyi DU , Liying SONG , Jiulong WANG , Ming YUE
CPC classification number: E21B43/168 , E21B43/255
Abstract: The present disclosure provides a reinforcement learning-based decision optimization method of an oilfield production system, including: collecting dynamic production data of an oilfield production site to establish a data cube for reservoir production optimization; training a preset machine learning model based on the data cube to obtain a reinforcement learning-based reservoir injection-production system surrogate model configured to predict oil production according to the dynamic production data available on site; constructing an evaluation function for production optimization of a gas injection reservoir; establishing, during a process of production optimization, an enforced constraint model based on input parameters and a boundary constraint condition; and with the constraint model and the boundary constraint condition as constraints, the reservoir injection-production system surrogate model as a basis, and the evaluation function as an optimization direction, searching reservoir production optimization schemes for an optimal production scheme.
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94.
公开(公告)号:US20230325737A1
公开(公告)日:2023-10-12
申请号:US17954357
申请日:2022-09-28
Applicant: University of Science and Technology Beijing
Inventor: Zhen XU , Furong ZHANG , Xintian HAO
IPC: G06Q10/06
CPC classification number: G06Q10/06313 , G06Q50/26
Abstract: A method and system for predicting post-earthquake repair of building groups in community are provided. The method includes: obtaining seismic damage states, building functions, and building areas of building groups in the community; determining a repair priority of each building based on functional classifications of the buildings; calculating a building repair workload considering the seismic damage states and building areas of the building groups in the community, and developing an individual-building repair model for simulating the repair process of an individual building under certain resource conditions; and developing a community building group repair resource allocation model and a community building group repair system dynamics model to predict the repair process of the building groups in the community at different levels of resource availability. The technical solution of the present invention can simulate the post-earthquake repair process of the building groups in the community.
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95.
公开(公告)号:US11752543B2
公开(公告)日:2023-09-12
申请号:US17639901
申请日:2021-11-25
Applicant: University of Science and Technology Beijing
Inventor: Jingyuan Li , Shang Dai , Chen Cai , Mingfan Qi , Jinbo Gu , Jianxin Xie
IPC: B22D13/02 , B22D13/10 , B22D13/12 , B29C41/04 , B29C41/36 , B22D13/04 , B29C39/08 , B29C39/22 , C03B19/02
CPC classification number: B22D13/02 , B22D13/04 , B22D13/107 , B22D13/12 , B29C39/08 , B29C39/22 , B29C41/04 , B29C41/36 , C03B19/02
Abstract: A screw smelting machine melts raw materials with a different chemical ratio in a mixing funnel in a feeding order to prevent the long-range diffusion of a melt, and controls outflow at a suitable speed. A centrifugal casting machine solidifies the melt with the ingredients gradient varying into a radial ingredient gradient material by a centrifugal casting style. A temperature sensor monitors temperature of an outer surface of a centrifuge cavity of the centrifugal casting machine during centrifugal casting, and transmits the temperature to a control platform. The control platform determines an optimal flow rate of the melt at an end of screw rod according to ingredient gradient of ingredient radial-gradient pipe materials and a thickness of each component gradient material required with preparation, in combination with a real-time data fed back from the temperature sensor, and feeds back to a feeding end.
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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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97.
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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