公开(公告)号：US20220090779A1

公开(公告)日：2022-03-24

申请号：US17598902

申请日：2021-01-25

Applicant: XI' AN JIAOTONG UNIVERSITY

Inventor： Hui Yan ,  Daotong Chong ,  Xin Li ,  Ming Liu ,  Junjie Yan

IPC: F22D5/26 ,  F22B1/00 ,  F24S20/40 ,  F24S50/00

Abstract: A control method for optimizing generated power of a solar-aided coal-fired power system under off-design working conditions sets maximizing generated power without changing main steam flow rate as a control goal. A solar-coal feedwater flow distribution ratio is adjusted to adjust water flow rate heated by a solar heat collection system, so as to achieve the control goal. Control steps include reading relevant information; calculating the water flow rate range heated by the solar heat collection system, and an applicable solar-coal feedwater flow distribution ratio range; establishing a correspondence between the generated power and the solar-coal feedwater flow distribution ratio within this range; selecting a solar-coal feedwater flow distribution ratio corresponding to the maximum generated power; and adjusting the water flow rate entering the solar heat collection system to an optimized value. The present invention can flexibly control the solar-coal coupling and improve the economy.

公开(公告)号：US20210041381A1

公开(公告)日：2021-02-11

申请号：US16989637

申请日：2020-08-10

Applicant: XI?AN JIAOTONG UNIVERSITY

Inventor： Lisheng Zhong ,  Xiaoyuan Song ,  Jinghui Gao ,  Qinxue Yu

IPC: G01N25/04 ,  G01R29/12

Abstract: A Differential Scanning calorimetry (DSC) thermal analysis method for the action of an applied electric field includes: step 1, in an experiment module of a differential scanning calorimeter, placing a microelectrode crucible and a reference crucible on corresponding sensors, connecting electrode wires of the microelectrode crucible with a signal generator, setting signal parameters to be output, placing a tested sample in a gap between electrodes, closing a microelectrode crucible lid, and closing the experiment module; step 2, at a temperature-varying stage, measuring a DSC curve of the tested sample under the action of an electric field, and at a reheating stage, measuring a DSC curve of the tested sample with no electric field; and step 3, analyzing the DSC curves in combination with the related theories of dielectrics and thermodynamics, and calculating an electric field intensity of the tested sample and a phase transformation rate of the tested sample.

公开(公告)号：US20200292244A1

公开(公告)日：2020-09-17

申请号：US16587025

申请日：2019-09-29

Applicant: Xi`an Jiaotong University

Inventor： Jinjia WEI ,  Xiaoping YANG ,  Lei LIU ,  Jie LIU

IPC: F28D15/04

Abstract: A loop heat pipe with a vapor-liquid two-phase flow injector, including: an evaporator, the vapor-liquid two-phase flow injector, a boiling pool and a condenser. The two-phase flow injector has a central vapor inlet and a circumferential liquid inlet, and is connected to an outlet of the evaporator and an inlet of the boiling pool. The condensate inlet of the condenser is connected to an outlet of the boiling pool. An outlet of the condenser is connected to the evaporator. With the vapor-liquid two-phase flow injector, the invention can directly introduce a part of the supercooled liquid working medium to the boiling pool without passing through the evaporator, solving the problem of insufficient liquid supply for the boiling pool and increasing the driving force for the system operation. Therefore, the invention enables the efficient cooling of electronic devices and the long-distance heat transfer.

公开(公告)号：US20140020186A1

公开(公告)日：2014-01-23

申请号：US13939979

申请日：2013-07-11

Applicant: Xi' an Jiaotong University ,  Shanghai Chuangshi Industry (Group) Co., Ltd.

Inventor： Litao Fan ,  Yong You ,  Yu Wang ,  Jianshu Tian ,  Sujiao Li ,  Le Li ,  Jin Li ,  Xiaolong Peng ,  Tong Zhang

IPC: A61G5/10

CPC classification number: A61G5/10 ,  A61G5/1043 ,  A61G5/1045 ,  A61G7/05776 ,  A61G2203/46

Abstract: A pressure-regulatable pressure sores prevention cushion is provided. The cushion comprises an air cell array, having a plurality of air cells and being divided into at least four air cell zones, the air cells in each air cell zone being in communication with each other, but air cells in any two adjacent air cell zones being not in communication with each other; a plurality of air passages, located under the air cell array and each of which being connected to and in communication with at least one of the air cell zones; a base, on which the air cell array having a plurality of air cells and the air passages being disposed; a plurality of air ducts, which are disposed within the base, an end of each air duct being in communication with a corresponding air passage, and the other end extending out of the cushion and being provided with a joint, and each air duct having a respective valve; and an automatic pressure regulator, which is in communication with the joints of the plurality of air ducts and electrically connected to the respective valve of each duct to enable the automatic pressure regulator to inflate or deflate each air duct.

Abstract translation: 提供压力可调节的防疮垫。 所述衬垫包括具有多个空气室并且被分成至少四个空气室区域的空气室阵列，每个空气室区域中的空气室彼此连通，但任何两个相邻空气室区域中的气室 不相互通信; 多个空气通道，位于气囊阵列下方，每个空气通道与至少一个气囊区连接并连通; 空气单元阵列具有多个气室和空气通道的基座; 多个空气管道，其设置在所述基座内，每个空气管道的端部与相应的空气通道连通，另一端延伸出所述衬垫并设置有接头，并且每个空气管道具有 各自的阀门; 以及自动压力调节器，其与所述多个空气管道的接头连通并且电连接到每个管道的相应阀门，以使所述自动压力调节器能够使每个风道膨胀或放气。

公开(公告)号：US20230368934A1

公开(公告)日：2023-11-16

申请号：US18213904

申请日：2023-06-26

Applicant: XI`AN JIAOTONG UNIVERSITY

Inventor： Ronghua Chen ,  Qinghang Cai ,  Kailun Guo ,  Wenxi Tian ,  Guanghui Su ,  Suizheng Qiu

IPC: G21D3/06 ,  G21D3/00

CPC classification number: G21D3/06 ,  G21D3/005

Abstract: A method for analyzing a sever accident in a nuclear reactor based on an advanced particle method includes steps of: 1) performing geometric modeling, setting initial conditions and boundary conditions; 2) updating material physical properties and key parameters; 3) performing mechanical structure module calculation, updating solid particle stress, strain, internal energy, displacement and velocity; 4) performing thermal hydraulic module calculation, updating fluid particle internal energy, position and velocity; 5) performing chemical reaction module calculation, updating particle matter composition and internal energy; 6) performing neutron physics module calculation, updating particle neutron flux density; and 7) outputting data. The method of the present invention is based on the discrete form of the advanced particle method, which is capable of accurately capturing cross-sectional changes, matter changes, and phase changes. Compared with grid method, the present invention can effectively avoid a mesh distortion problem existing in a large deformation.

公开(公告)号：US20230335304A1

公开(公告)日：2023-10-19

申请号：US17850238

申请日：2022-06-27

Applicant: Xi' an Jiaotong University

Inventor： Di Yun ,  Zhaohao Wang ,  Chunyang Wen ,  Tiantian Shi ,  Linna Feng ,  Wenbo Liu ,  Jianqiang Shan

IPC: G21C3/18 ,  G21C1/02 ,  G21C21/02

CPC classification number: G21C3/18 ,  G21C1/02 ,  G21C21/02

Abstract: The invention belongs to the technical field of nuclear reactor materials design, and discloses a method for improving the withstanding capability of the cladding material in the fast neutron irradiation environment, comprising the following steps: selecting the cladding material with the annular structure and placing it on the outer side of the metallic fuel slug, with leaving a 0.2-0.8 mm gap between the metallic fuel slug and the cladding material; processing the operation in a reactor subsequently, with an annealing process of the fast neutron reactor fuel during the operation of the reactor; improves the withstanding capability of the cladding material in the fast neutron irradiation environment. The invention processes annealing treatment of the cladding material by balancing the internal and external stresses, multiple cycles of steady-state and transient operations, enhancing the withstanding capability of the steel in the high neutron irradiation environment, improving the lifetime of the cladding material.

公开(公告)号：US20210199613A1

公开(公告)日：2021-07-01

申请号：US17059203

申请日：2019-10-11

Applicant: XI`AN JIAOTONG UNIVERSITY

Inventor： Jinru Sun ,  Xueling Yao ,  Xiangyu Tian ,  Jingliang Chen

IPC: G01N27/20 ,  G06F30/20

Abstract: A method for calculating the damage of a carbon fiber composite reinforced polymer (CFRP) composite under an action of a single lightning current component with a fast-rising rate is disclosed. Through the obtained dynamic impedance curves of the CFRP composite under the action of the non-destructive lightning current component, the anisotropic conductivity of the CFRP composite under the action of the single lightning current component with specified parameters is extrapolated based on pre-designed lightning damage simulation conditions. The anisotropic conductivity is taken as the initial condition of the conductivity of the CFRP composite in the coupled thermoelectric simulation model, which is able to better simulate the real lightning effect on the CFRP composite, and is able to more accurately obtain the lightning damage of the CFRP composite and analyze the relationship between the lightning damage parameters.

公开(公告)号：US20210028472A1

公开(公告)日：2021-01-28

申请号：US16939034

申请日：2020-07-26

Applicant: Xi?an Jiaotong University

Inventor： Wenquan TAO ,  Le LEI ,  Fan BAI ,  Li CHEN ,  Lei CHEN ,  Zhiguo QU

IPC: H01M8/04298 ,  G06F30/10

Abstract: Analysis method of fuel cell input and output characteristics, which utilizes π theorem and principle of similarity to carry out dimensional analysis and equation analysis for model parameters and governing equations respectively for a given proton exchange membrane fuel cell theoretical model, includes the steps: determine model parameters and dimensions of each parameter, and filter out basic parameters for dimensional analysis; use π theorem to perform dimensional analysis to obtain dimensionless numbers; use principle of similarity to analyze model governing equations to obtain dimensionless numbers; compare the two sets of dimensionless numbers to determine the dimensionless number of the fuel cell model under study; define dimensionless voltage and dimensionless current to serve as the ordinate and abscissa of the dimensionless polarization curve, then any point on the dimensionless polarization curve represents a set of similar working conditions and the number and time of experiment or simulation can be greatly reduced.

公开(公告)号：US20160242741A1

公开(公告)日：2016-08-25

申请号：US14438936

申请日：2014-05-29

Applicant: XI ' AN JIAOTONG UNIVERSITY

Inventor： Mingxi Wan ,  Diya Wang ,  Xuan Yang ,  Yu Zhai ,  Hui Zhong

IPC: A61B8/08 ,  A61B8/14 ,  A61B8/06

CPC classification number: A61B8/5223 ,  A61B8/06 ,  A61B8/14 ,  A61B8/481

Abstract: A contrast imaging method based on a wide beam and a method for extracting a perfusion time-intensity curve (TIC) are provided to increase contrast-to-tissue ratio (CTR) through the contrast imaging method based on the wide beam via a pulse inversion microbubble wavelet transform sum squared differences decorrelation (PIWSSD). An auto adaptive analysis method about rapidly and accurately extracting a TIC tendency of the contrast imaging method based on the wide beam is also provided to overcome limitations of a decrease in the CTR of the contrast imaging based on the wide beam and a decrease in SCR of the perfusion TIC. The present invention plays an important role in effectively reducing an ultrasound contrast imaging acoustic power and a contrast microbubble perfusion concentration, reducing potential threat to human body, acquiring a contrast image with the high CTR, and accurately evaluating and diagnosing blood perfusion.

Abstract translation: 提供了基于宽光束的对比成像方法和用于提取灌注时间 - 强度曲线（TIC）的方法，以通过基于宽光束的对比度成像方法经由脉冲反转来增加对比度组织比（CTR） 微泡小波变换和平方差去相关（PIWSSD）。 还提供了一种快速准确地提取基于宽光束的对比度成像方法的TIC倾向的自适应分析方法，以克服基于宽光束的对比度成像的CTR降低和SCR的降低的限制 灌注TIC。 本发明在有效降低超声对比成像声功率和对比微泡灌注浓度方面发挥重要作用，减少对人体的潜在威胁，获得高CTR的对比图像，以及精确评估和诊断血液灌注。

公开(公告)号：US20150369853A1

公开(公告)日：2015-12-24

申请号：US14654532

申请日：2013-11-14

Applicant: STATE GRID CORPORATION OF CHINA ,  STATE GRID HUBEI ELECTRIC POWER RESEARCH INSTITUTE ,  CHINA ELECTRIC POWER RESEARCH INSTITUTE ,  XI ' AN JIAOTONG UNIVERSITY

Inventor： Jun Chen ,  Jinbin Li ,  Jun Lu ,  Haiqiong Liu ,  Min Chen ,  Hao Wang ,  Jiangang Bi ,  Shuai Yuan ,  Yuan Yang ,  Junhao Li ,  Jianfeng Liang ,  Yanming Li

IPC: G01R31/12 ,  H01Q1/36

CPC classification number: G01R31/1254 ,  H01Q1/362 ,  H04B17/00

Abstract: A testing device for propagation characteristic of electromagnetic wave in gas insulated switchgear includes an ultrahigh frequency signal generator, a GIS testing chamber, an emitting antenna and a receiving antenna which are provided inside the GIS testing chamber. A detachable disc insulator is provided between the emitting antenna and the receiving antenna. Both terminals of a GIS testing chamber are sealed by polyurethane wave-absorbing sponge; the ultrahigh frequency signal generator is connected with the emitting antenna, and the receiving antenna is connected with a oscilloscope. A guide rod which is fixed by the disc insulator is provided in the GIS testing chamber. The present invention is capable of achieving testing propagation characteristic of partial discharge ultrahigh frequency electromagnetic wave signal of a gas insulated switchgear in a laboratory, so as to master attenuation characteristics of the partial discharge ultrahigh frequency electromagnetic wave signal, and lay a laboratory foundation for accurate detection of the partial discharge of the gas insulated switchgear by field use of an ultrahigh-frequency method.

Abstract translation: 气体绝缘开关设备电磁波传播特性试验装置包括设在GIS测试室内部的超高频信号发生器，GIS测试室，发射天线和接收天线。 在发射天线和接收天线之间提供可拆卸的盘式绝缘体。 GIS测试室的两个端子都用聚氨酯吸波海绵密封; 超高频信号发生器与发射天线连接，接收天线与示波器连接。 在GIS测试室中设置由盘式绝缘体固定的导杆。 本发明能够实现实验室气体绝缘开关设备的局部放电超高频电磁波信号的测试传播特性，从而掌握局部放电超高频电磁波信号的衰减特性，为准确的 通过现场使用超高频法检测气体绝缘开关柜的局部放电。