Patents Assigned to Tianjin University
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Patent number: 12061174Abstract: The disclosure discloses a creep lifetime prediction method for a P92 main steam pipeline welded joint, which includes the following. Based on the minimally invasive sampling technology and the microstructure characterization equipment, the microstructure of the P92 steel welded joint after service is obtained. An area with a most significant degradation of the P92 steel welded joint is determined by performing grading processing on the microstructure of the welded joint. The maximum main stress of the structural component is obtained through the finite element technology and the actual service pressure of the P92 steel welded component. Through the maximum main stress and the microstructure after grading, based on the temperature-related Larson-Miller creep lifetime prediction method, the creep lifetime of the welded joint under the condition is determined.Type: GrantFiled: March 28, 2024Date of Patent: August 13, 2024Assignee: Tianjin UniversityInventors: Lei Zhao, Lianyong Xu, Kai Song, Yongdian Han
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Publication number: 20240262974Abstract: A method for treating a waste plastic based on a persulfate system is provided. The method includes the following steps: mixing the waste plastic, sulfuric acid, sulfate, peroxymonosulfate, and water, and reacting at 80-140° C. for 3-15 h to complete the treatment; where the waste plastic is polyethylene or polyethylene terephthalate; and the sulfate is copper sulfate or ferrous sulfate. The present invention reasonably regulates and controls each parameter in the reaction process while constructing a homogeneous catalysis system of transition metal activated peroxymonosulfate, and finally directionally converts the waste plastic into C7H12 and C10H12 fuels, which realizes high-efficiency recycling of the waste plastic, has a simple and convenient working procedure, and has a wide application prospect.Type: ApplicationFiled: June 27, 2023Publication date: August 8, 2024Applicant: Tianjin UniversityInventors: Ning LI, Hengxin LIU, Guanyi CHEN, Beibei YAN, Zhanjun CHENG, Shengquan ZHOU, Xiaochao ZHU
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Patent number: 12032369Abstract: A method of analytical calculation of power supply reliability indexes of a power distribution network includes (A1) acquiring parameters of the power distribution network; (A2) building a reliability calculation model, which includes treating the power distribution network as a node-branch calculation unit and numbering nodes and branches in the power distribution network; (A3) building correlation matrices, and calculating a power supply path matrix and a tie-line matrix, wherein the correlation matrices are a node-branch association matrix, a section switch matrix and a fuse matrix; (A4) deriving a fault incidence matrix through the power supply path matrix, the section switch matrix, the fuse matrix and the tie-line matrix, and calculating the reliability indexes of the nodes and the power distribution network; and (A5) identifying vulnerable links by performing sensitivity analysis through partial derivative transformation for quantifiable parameters or perturbation transformation for unquantifiable paraType: GrantFiled: September 14, 2023Date of Patent: July 9, 2024Assignee: Tianjin UniversityInventors: Fengzhang Luo, Nan Ge, Qiubo Zou, Tianyu Zhang, Chengshan Wang, Jing Xu, Shengyuan Wang, Xuan Wu, Jiacheng Fo, Xiaoyu Qiu, Kuangyu Kong
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Publication number: 20240217372Abstract: A bilevel coordinated optimization method for fixed and mobile charging facilities on highways, includes: constructing an optimization model framework which includes an upper-layer coordinated location optimization model and a lower-layer coordinated capacity optimization model, where the upper-layer coordinated location optimization model is used to optimize locations of charging stations and determine locations and time points of charging demands that require truck mobile charger (TMC) deployment, while the lower-layer coordinated capacity optimization model is used to optimize TMC and fixed charger (FC) capacities at candidate sites, improving an utilization rate of FCs; and performing equivalent linearization on a nonlinear problem using a big-M method and converting the problem into a mixed-integer linear programming model, and implementing a data exchange process between upper and lower layers using analytical target cascading.Type: ApplicationFiled: December 21, 2023Publication date: July 4, 2024Applicant: Tianjin UniversityInventors: Hongjie JIA, Kecheng HE, Yunfei MU, Xiaodan YU, Xiaohong DONG, Xiandong XU
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Patent number: 12016537Abstract: A sponge-based variable-stiffness support structure for natural orifice surgical instrument is to support the surgical instrument and includes: a variable-stiffness sponge pipeline connected with the natural orifice surgical instrument and configured to support the natural orifice surgical instrument in a natural orifice; a hydrophobic breathable film attached to an outer wall of the variable-stiffness sponge pipeline, and configured to isolate the variable-stiffness sponge pipeline from body fluid in the natural orifice; and a gas delivery assembly connected with the variable-stiffness sponge pipeline, and configured to inject high-pressure air or water vapor into a variable-stiffness sponge pipe of the variable-stiffness sponge pipeline; wherein the variable-stiffness sponge pipeline has a stiffness inversely proportional to content of the water vapor.Type: GrantFiled: June 29, 2018Date of Patent: June 25, 2024Assignee: Tianjin UniversityInventors: Shuxin Wang, Xuyang Ren, Guokai Zhang, Zufeng Shang, Jinhua Li
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Publication number: 20240199435Abstract: A catalytic synthesis method, a device and a system for ammonia synthesis through orderly regulation of the electronic domain of nitrogen are provided. Nitrogen and hydrogen are used as raw materials, and a multi-composition material with magnetic material as active site is used as a catalyst, thermal field, magnetic field and electric field or thermal field and electromagnetic field are applied to nitrogen, hydrogen and catalyst at the same time. The invention adopts the catalytic synthesis method, device and system for the mild ammonia synthesis at low temperature and low pressure conditions through orderly regulation of the electronic domain of nitrogen.Type: ApplicationFiled: July 7, 2023Publication date: June 20, 2024Applicant: Tianjin UniversityInventors: Baoshun ZHANG, Yifu YU, Bin ZHANG
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Publication number: 20240200534Abstract: The present disclosure relates to a wind farm layout and yaw control method, and an electronic device. The wind farm layout and yaw control method comprises the following steps: acquiring wind farm data, importing the wind farm data into a WFSim model for simulation, obtaining original power data of the wind farm, counting and recording modifiable wind farm layout and yaw parameters, adjusting variable parameters to be changed, using the WFSim model for simulation to obtain an optimal parameter range of different variables and combining the optimal parameters to obtain an optimal working condition, and using the WFSim model for simulation to obtain optimal power data. The wind farm layout and yaw control method according to the present disclosure is based on optimizing the power output of the wind farm, so that it is very convenient to acquired information.Type: ApplicationFiled: July 25, 2023Publication date: June 20, 2024Applicant: Tianjin UniversityInventors: Xiandong XU, Guohao LI, Yuze ZHAO, Changpeng SONG, Lidong ZHANG
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Patent number: 12012912Abstract: Disclosed are two system devices for stratified injecting the recirculated exhaust gas and high-specific-heat-capacity or inert gas for clean combustion of an internal combustion engine. The former is composed of an exhaust gas recirculation system, an injection system, and a power system. The latter is composed of four parts, and a high-specific-heat-capacity gas or inert gas channel is added. Injectors can be arranged at any position in the cylinder between a top dead center and a bottom dead center of a piston in a cylinder; 1-3 layers of injectors can be arranged; and 2-6 injectors can be arranged on each layer. Gas participating in combustion enters the cylinder from two intake channels, namely, a scavenging port of the internal combustion engine and the injectors; an in-cylinder swirl ratio can be remarkably increased through kinetic energy carried by the gas; and fuel-gas mixing is promoted, and the combustion rate is increased.Type: GrantFiled: February 14, 2023Date of Patent: June 18, 2024Assignee: Tianjin UniversityInventors: Tianyou Wang, Tianlong Lu, Zhen Lu
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Patent number: 12006484Abstract: The present invention provides a method and a system for preparing fuel using high-acid-value biological grease, which can be processed through triple deoxidization steps, i.e., thermal cracking deoxygenation-catalytic cracking deoxygenation-catalytic hydrodeoxygenation. By use of the method and system of the invention, the raw material of the high-acid-value biological grease can be gradually deoxidized to reduce the acid value and thereby prepare a clean fuel with equivalent fuel components as those obtained from crude oil refining or direct hydrodeoxygenation for biological grease.Type: GrantFiled: July 31, 2021Date of Patent: June 11, 2024Assignees: ECO Environmental Energy Research Institute Limited, Tianjin UniversityInventors: Bin Xu, Kam Shing Siu, Chunjian Xu, Yongchao He
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Patent number: 12005531Abstract: A method of automatically welding a welded seam of a saddle line for a saddle-type T joint belonging to the technical field of welding is provided, including: establishing a groove cross-sectional model, solving a variation law of a groove cross-sectional area, and planning a welding bead and a welding process parameter according to the groove cross-sectional area; establishing a welding torch pose mathematical model and obtaining a pose homogeneous transformation matrix T of a welding torch; establishing a three-dimensional model of a main pipe and a branch pipe, building a welding system through offline software, importing welding spot pose information, and generating welding torch pose offline command through the offline software; and performing automatic welding of the welded seam of the saddle line for the saddle-type T joint according to the planned welding bead and the welding process parameter and the generated welding torch pose offline command.Type: GrantFiled: September 27, 2023Date of Patent: June 11, 2024Assignee: Tianjin UniversityInventors: Yongdian Han, Zhaowei Xue, Lianyong Xu, Lei Zhao, Kangda Hao
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Patent number: 12005802Abstract: A bilevel coordinated optimization method for fixed and mobile charging facilities on highways, includes: constructing an optimization model framework which includes an upper-layer coordinated location optimization model and a lower-layer coordinated capacity optimization model, where the upper-layer coordinated location optimization model is used to optimize locations of charging stations and determine locations and time points of charging demands that require truck mobile charger (TMC) deployment, while the lower-layer coordinated capacity optimization model is used to optimize TMC and fixed charger (FC) capacities at candidate sites, improving an utilization rate of FCs; and performing equivalent linearization on a nonlinear problem using a big-M method and converting the problem into a mixed-integer linear programming model, and implementing a data exchange process between upper and lower layers using analytical target cascading.Type: GrantFiled: December 21, 2023Date of Patent: June 11, 2024Assignee: Tianjin UniversityInventors: Hongjie Jia, Kecheng He, Yunfei Mu, Xiaodan Yu, Xiaohong Dong, Xiandong Xu
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Patent number: 11975810Abstract: Disclosed is a bionic fish single-degree-of-freedom modular structure based on a cam mechanism. The bionic fish single-degree-of-freedom modular structure comprises a plurality of modules which are sequentially connected, wherein the foremost one of the modules is a fish head module, and the last one of the modules is a fish tail module; each module in the modules comprises a rack, a rotating shaft is arranged in the center of the rack in a penetrating mode, the second end of the rotating shaft of the previous module is connected to the first end of the rotating shaft of the next module through a universal coupling, the next module is connected with the previous module through a swing connecting piece, and the effect that the modules swing in a plane is achieved.Type: GrantFiled: November 19, 2021Date of Patent: May 7, 2024Assignee: Tianjin UniversityInventors: Zhibin Song, Zhongru Fu
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Patent number: 11926002Abstract: The invention belongs to the field of welding technology and discloses a CMT automatic overlaying method for opening in side wall of bimetallic composite pipes. The method includes: establishing a mathematical model of the opening in a side wall to be welded; Based on the mathematical model, determining the trajectory of the saddle line during overlaying; dividing the trajectory of the saddle line into several welding runs, all of which adopt the downslope welding process; establishing a three-dimensional model of the opening in the side wall to be welded and a CMT overlaying system simulation model; Based on the simulation model, planning the overlaying path of the CMT overlaying, and generating an overlaying offline instruction; Based on the offline instruction, performing CMT overlaying on the opening in the side wall to be welded according to the overlaying sequence, so as to obtain a weld overlay.Type: GrantFiled: September 27, 2023Date of Patent: March 12, 2024Assignee: Tianjin UniversityInventors: Yongdian Han, Zhaowei Xue, Lianyong Xu, Lei Zhao, Kangda Hao
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Publication number: 20240066189Abstract: Disclosed is a high anticoagulation extracorporeal circulation tube, which include the following preparation methods: S1, firstly, aminating the surface of the tube by extrusion molding; S2, activating heparin groups by a direct coupling method; S3, heparinizing PVC or PC tubes; S4, then, using albumin, functionalized PEG which can react with amino groups, and phosphate to further surface modify the inner wall of heparinized PVC or PC tube to block the sites not modified by heparinization, so as to shield the adsorption of platelets and protein in blood on the inner wall. The application can produce a novel high anticoagulation extracorporeal circulation tube with low price and high biocompatibility, which expands the application in clinic.Type: ApplicationFiled: September 20, 2022Publication date: February 29, 2024Applicant: Wenzhou Safety (Emergency) Research Institute, Tianjin UniversityInventors: Bin ZHENG, Haojun FAN, Bowen LI, Tingting HUA
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Publication number: 20240066201Abstract: Disclosed is a high anticoagulation ECMO and extracorporeal circulation consumable, which include the following preparation methods: S1, aminating the surface of ECMO blood circulation device and extracorporeal circulation consumables; S2, activating heparin groups; S3, heparinizing the ECMO blood circulation device and extracorporeal circulation consumables; S4, modification of enhancer. The application can produce a novel high anticoagulation extracorporeal circulation tube with low price and high biocompatibility, which expands the application in clinic.Type: ApplicationFiled: September 20, 2022Publication date: February 29, 2024Applicant: Wenzhou Safety (Emergency) Research Institute, Tianjin UniversityInventors: Bin ZHENG, Haojun FAN, Bowen LI, Tingting HUA
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Patent number: 11890397Abstract: Disclosed is a high anticoagulation extracorporeal circulation tube, which include the following preparation methods: S1, firstly, aminating the surface of the tube by extrusion molding; S2, activating heparin groups by a direct coupling method; S3, heparinizing PVC or PC tubes; S4, then, using albumin, functionalized PEG which can react with amino groups, and phosphate to further surface modify the inner wall of heparinized PVC or PC tube to block the sites not modified by heparinization, so as to shield the adsorption of platelets and protein in blood on the inner wall. The application can produce a novel high anticoagulation extracorporeal circulation tube with low price and high biocompatibility, which expands the application in clinic.Type: GrantFiled: September 20, 2022Date of Patent: February 6, 2024Assignee: Wenzhou Safety (Emergency) Research Institute, Tianjin UniversityInventors: Bin Zheng, Haojun Fan, Bowen Li, Tingting Hua
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Patent number: 11870254Abstract: The present invention proposes a multi-terminal differential protection setting method for a distributed generator T-connected distribution network. The present invention can accurately identify internal faults and external faults of the protected area in the high-proportion distributed generator T-connected distribution network, with sufficient reliability and sensitivity.Type: GrantFiled: April 14, 2023Date of Patent: January 9, 2024Assignee: Tianjin UniversityInventors: Botong Li, Fahui Chen, Bin Li, Jing Zhang
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Patent number: 11866737Abstract: The invention relates to a 2-isopropyl malate synthase, a genetically engineered bacterium for producing L-leucine and application thereof and belongs to the field of metabolic engineering. The genetically engineered bacterium is obtained by overexpressing an isopropyl malate synthase coding gene leuAM for relieving feedback inhibition by L-leucine, an acetohydroxy acid synthase coding gene ilvBNM for relieving feedback inhibition by L-isoleucine, a 3-isopropyl malate dehydrogenase coding gene leuB and a 3-isopropyl malate dehydratase coding gene leuCD in host cells. The genetically engineered bacterium for producing the L-leucine is free from nutritional deficiency, rapid in growth, short in fermentation period, high in yield and high in conversion rate.Type: GrantFiled: December 29, 2020Date of Patent: January 9, 2024Assignee: Tianjin University of Science and TechnologyInventors: Chenglin Zhang, Qingyang Xu, Yanjun Li, Yu Zhang, Yingzi Li, Fuzhou Zhu, Nan Lu, Shibao Han, Xierong Dong, Zishen Wang, Hao Xu, Ziyi Li
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Patent number: 11862969Abstract: An optimal configuration method for a hybrid energy storage of a grid-connected wind storage power generation system is provided, including: performing a frequency domain decomposition on a historical wind power output, to count high-frequency and low-frequency components of the historical wind power output, and determining a rated power of the hybrid energy storage based on a probability distribution function; establishing a hybrid energy storage capacity optimization model for a full life cycle of a wind farm to minimize a net present value of an annual cost and maximize a target satisfaction rate of an output; extracting a daily typical scenario for the wind power output based on a clustering algorithm to count a time proportion of each typical scenario as an input scenario of the hybrid energy storage capacity optimization model for the full life cycle of the wind farm; and solving with a multi-objective optimization algorithm, to obtain an optimal hybrid energy storage capacity configuration scheme for tType: GrantFiled: July 28, 2021Date of Patent: January 2, 2024Assignee: Tianjin UniversityInventors: Chao Ma, Rui Du, Xiulan Pang
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Publication number: 20230361576Abstract: A wind power accommodation oriented low-carbon operation scheduling method for offshore oil and gas platform energy system. Aiming at uncertainty and fluctuation of wind power, the method constructs a target linear planning model. A target function result of the model is the lowest power synthesis of a gas generator. Constraints of the model include a gas power generation and wind power synergetic ramp flexibility constraint, a gas generating capacity and wind power capacity synergetic flexibility constraint, an operating characteristic constraint of a gas generator set, an operating characteristic constraint of a gas compressor and a grid-connected operating characteristic constraint of a wind generator. The scheduling method can effectively cope with the uncertainty and fluctuation of wind power, so as to reduce carbon emission of the energy system of the offshore oil and gas field.Type: ApplicationFiled: January 10, 2023Publication date: November 9, 2023Applicant: Tianjin UniversityInventors: Xiandong XU, Jing LIU, Hongjie JIA