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61.发明授权公开(公告)号：US11567230B1
公开(公告)日：2023-01-31
申请号：US17679137
申请日：2022-02-24
Applicant: University of Science and Technology Beijing
Inventor： Dazhao Song , Xueqiu He , Menghan Wei
Abstract: A direction-finding and positioning system of electromagnetic emission of coal or rock fracture includes a three-axis electromagnetic sensor array, a signal acquisition module and a direction-finding and positioning terminal; the three-axis electromagnetic sensor array is composed of at least four three-axis electromagnetic sensors configured to synchronously sense magnetic field strength in three-axis direction based on a tunnel magneto resistance technology, and obtain a real magnetic field vector in space by measuring; the signal acquisition module is configured to acquire magnetic field vector variable information of multiple measuring points in real-time, and after extracting magnetic field vector variable parameters, transmitting the magnetic field vector variable parameters to the direction-finding and positioning terminal; the direction-finding and positioning terminal is configured to perform direction-finding and positioning calculations according to the magnetic field vector variable parameters received, and performing a three-dimensional dynamic visual display to positioning results, positioning time, and positioning coordinates.
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公开(公告)号：US20220325368A1
公开(公告)日：2022-10-13
申请号：US17440648
申请日：2020-08-11
Applicant: University of Science and Technology Beijing
Inventor： Rong ZHU , Weifeng LI , Guangsheng WEI , Chao FENG , Kai DONG , Runzao LIU , Yun ZHOU , Qiang RUAN , Guoli WEI , Deyong WANG , Qingde ZHU , Zhiguo HAN
Abstract: There is provided a method of dynamic control for a bottom blowing O2—CO2—CaO converter steelmaking process. In the process, O2 is adopted as a top blowing gas, a mixed gas O2+CO2 is adopted as a bottom blowing carrier gas to inject lime powders into the converter from a bottom blowing tuyere. The ingredients of the molten steel in the converter steelmaking process are predicted based on the conservation of matter, in combination with the ingredient data of charged molten iron, the ingredient data of the converter gas in the converter blowing process, and working conditions of the bottom blowing device. The top blowing oxygen amount, the bottom blowing gas ratio and the flow rate of lime powder are dynamically adjusted stage by stage according to requirements for target ingredients at the end point of blowing.
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公开(公告)号：US11371344B2
公开(公告)日：2022-06-28
申请号：US16620657
申请日：2018-09-21
Applicant: University of Science and Technology Beijing
Inventor： Weiyao Zhu , Zhiyong Song , Ming Yue , Yunfeng Liu , Zhen Chen , Dongxu Ma , Wenchao Liu , Qian Qi
Abstract: A method for identifying a medium structure coupling and a fracture network morphology of a shale gas reservoir includes the following steps. Firstly, performing a fracturing test on shale cores by using a modified Brazilian disc test and categorizing the fracture network morphology. Secondly, performing a shale matrix-fracture structure and stress sensitivity test on the shale cores having different fracture network morphology. After that, determining a stress sensitivity constant of different fracture network morphology according to indoor core data and finally preparing an identification chart of the fracture network morphology based on an indoor core stress sensitivity test combined with a production practice. The identification chart can be applied to an actual fracturing well, and the fracture network morphology is directly identified by a real-time effective stress and a normalized flow.
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公开(公告)号：US20220140961A1
公开(公告)日：2022-05-05
申请号：US17138949
申请日：2020-12-31
Applicant: University of Science and Technology Beijing
Inventor： Haijun ZHANG , Xiangnan LIU , Keping LONG
Abstract: A bandwidth part (BWP) and power scheduling method and apparatus for indoor terahertz are provided. The BWP and power scheduling method uses an intelligent reflecting surface (IRS) and a non-orthogonal multiple access (NOMA) to compensate for a shortcoming, wherein terahertz waves are not suitable for an indoor transmission, convert an indoor environment of an IRS-assisted terahertz propagation into a channel model, and convert an optimal wireless resource scheduling in an indoor IRS-assisted terahertz system into a functional optimization design with random constraints. Policies and corresponding actions are trained by using a proximal policy optimization (PPO) to schedule a power and a BWP. An actor part generates continuous a power scheduling, and a critic part generates a discrete BWP scheduling.
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公开(公告)号：US11286192B2
公开(公告)日：2022-03-29
申请号：US16824659
申请日：2020-03-19
Applicant: University of Science and Technology Beijing , Shengshi Weilan (Shandong) Environmental Science & Technology Co., Ltd.
Inventor： Yi Xing , Chen Hong , Yanxiao Si , Wei Su , Bo Jiang
Abstract: The present invention discloses a high-moisture sludge ultra-fine synchronizing deep-drying device and a method thereof. The device has a sludge ultrafine pulverizing unit and a sludge drying unit arranged horizontally in parallel, and a pulverized sludge discharge port arranged between them. The sludge ultrafine pulverizing unit comprises a sludge pulverizing chamber and a sludge feeding port, and the sludge pulverizing chamber is a hollow cylindrical structure with a pulverizing rotation shaft arranged in the center, and the pulverizing rotation shaft is provided with a sludge pulverizing impeller. The lower part of the sludge feeding port is provided with a first baffle and/or a second deflector. The sludge is pulverized into sludge powders in the sludge pulverizing chamber, and then fed into the sludge drying chamber to be fluidized and dried. The present invention has the advantage of high drying efficiency, etc.
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Patent Agency Ranking
公开(公告)号：US11180863B2
公开(公告)日：2021-11-23
申请号：US16612739
申请日：2019-03-27
Inventor： Shuqiang Jiao , Zhe Wang , Handong Jiao
Abstract: A device and a method for preparing pure titanium by electrolysis-chlorination-electrolysis, wherein the device includes a first electrolytic cell, a second electrolytic cell, a chlorination reactor and guide tubes. The Cl2 generated at the anode of the first electrolytic cell is introduced into a chlorination reactor containing the TiCxOy or TiCxOyNz raw materials via a guide tube, and a chlorination is carried out to generate TiCl4 gas at a temperature of 200° C.-600° C. The TiCl4 gas passes through a guide tube into a cathode of the second electrolytic cell, and then an electrolysis is performed to obtain the high-purity titanium in the second electrolytic cell. At the same time, the Cl2 generated at the anode of the second electrolytic cell is recycled into the chlorination reactor in the first electrolytic cell to continue to participate in the chlorination of TiCxOy or TiCxOyNz.
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公开(公告)号：US20210356118A1
公开(公告)日：2021-11-18
申请号：US16335677
申请日：2017-11-30
Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
Inventor： Shengen Zhang , Lin Li , Bo Liu , Bolin Zhang
Abstract: A pure oxygen combustion method with a low nitrogen source is provided, relating to a technical field of thermal engineering. The method includes steps of: adopting a low nitrogen fuel, and adopting pure oxygen as a combustion-supporting gas; separately transporting the pure oxygen and the low nitrogen fuel; controlling a ratio of the pure oxygen to the low nitrogen fuel; and combusting tangentially in the pure oxygen in a combustion chamber, so as to realize deep burnout of the low nitrogen fuel and decrease CO and NOx emission concentrations. The present invention realizes nitrogen source reduction before combustion, reduces NOx emissions, and increases a thermal energy conversion efficiency of the fuel, without a flue gas de-nitrification device. Therefore, a NOx emission concentration is 5-100 mg/m3, a CO emission concentration is 50-500 mg/m3, and a combustion efficiency of the fuel is beyond 95%.
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公开(公告)号：US20210355554A1
公开(公告)日：2021-11-18
申请号：US17124506
申请日：2020-12-17
Applicant: University of Science and Technology Beijing
Inventor： Rong ZHU , Bohan TIAN , Kai DONG , Guangsheng WEI , Rongfang SU
Abstract: A production apparatus and method for electric arc furnace steelmaking with a fully continuous ultra-short process are provided. A continuous adding, melting, smelting and continuous casting of a metal material are integrated, and a metallurgy process is completed in a flowing of a molten steel, to realize a continuous production of ingot blanks. The production apparatus includes four operation sites of an electric arc furnace for melting and primary refining, a sealed tapping chute for molten steel flowing, a refinement storage bed for molten-steel desulfurization and alloying and a conticaster for continuous casting A material flow, an energy flow and a time stream in the four operation sites are in a dynamic equilibrium. The production apparatus and method realize a molten-steel casting is started within 120 minutes after the metal material is started to be continuously added, and an uninterrupted continuous production is maintained for above 80 hours.
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公开(公告)号：US20210327307A1
公开(公告)日：2021-10-21
申请号：US17227401
申请日：2021-04-12
Applicant: University of Science and Technology Beijing , China Railway Tunnel Consultants Co., Ltd. , Hebei Zhucheng Industrial and Mining Machinery Co., Ltd
Inventor： Xiaomin ZHOU , Yue ZHUO , Wenzhu MA , Wei LI , Yan XU , Yongsheng LIU , Xiaonan HE , Yue WANG , Yongdai WANG , Shiwu CAI , Guijiang WEI , Xin JIANG , Zhiyuan SHA
IPC: G09B23/40
Abstract: Provided are a multi-functional stratigraphic structure model testing system and testing method. The system includes a test piece testing device platform that includes a watertight fan-shaped closed cavity, a fluid-solid coupling loading system, and an anti-arc reaction frame system. A coupling loading system region consist of hydraulic (liquid) loading and multi-directional solid-skeleton loading onto a pore or crack test piece, which can be independently operated or combined with each other's. The fan-shaped closed cavity is fixed through the anti-arc reaction frame system, and a fan-shaped center region is provided with an application region of underground working face. The other two flat fan sides are provided with application regions of physical and chemical improvement for surrounding rock.
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公开(公告)号：US20210238973A1
公开(公告)日：2021-08-05
申请号：US17149015
申请日：2021-01-14
Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
Inventor： WEIYAO ZHU , ZHIYONG SONG , JIANFA WU , SHOU MA , DEBIN KONG , MING YUE , ZHEN CHEN , YUBAO GAO
Abstract: The present disclosure provides a method and device for developing shale gas by tapered gradient pressure drop with multi-stage fractured horizontal well; the method comprises: acquiring fracturing crack form parameters of the multi-stage fractured horizontal well and reservoir characteristic parameters of nearby formation; dividing the formation near the shale gas multi-stage fractured horizontal well into strongly transformed area, weakly transformed area and matrix area; establishing pressure difference-flow models of gas-phase and water phase of the three areas respectively, and coupling the models of the three areas to establish production equation of the multi-stage fractured horizontal well; according to the production equation of the multi-stage fractured horizontal well, performing numerical simulation with different combinations of production pressure differences in the three stages of the multi-stage fractured horizontal well; and selecting a combination of production pressure differences with the greatest economic benefit as combination of production pressure differences.
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