公开(公告)号：US20220308038A1

公开(公告)日：2022-09-29

申请号：US17610988

申请日：2021-02-04

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Jiuwen BAO ,  Zihao YU ,  Peng ZHANG ,  Shuguo LI ,  Tiejun ZHAO

IPC: G01N33/38 ,  E02D1/08

Abstract: A device and method for monitoring freezing-thawing damage of an underwater concrete member in situ. A main structure includes an upper link, concrete member, transverse sealed box, longitudinal sealed box, movable guide rod, probe launching box, multichannel data collector, frequency modulation transmitter, computer, auxiliary wheels, lower link, and a wireless temperature sensor. A process includes four steps: launching of a probe, collection of data, calculation of an elastic modulus, and evaluation of freezing-thawing damage. The device is simply structured, easy to operate, and can be reused, and provides power for launching the probe by non-contact force transmission by using high-strength magnets of the same pole, resolving the sealing problem, and calculates the elastic modulus of the concrete member by using acceleration data obtained by a probe, so as to obtain a loss amount of the elastic modulus, thereby performing real-time in-situ monitoring for freezing-thawing damage of an underwater concrete member.

公开(公告)号：US20220306504A1

公开(公告)日：2022-09-29

申请号：US17430812

申请日：2020-10-27

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Xuejun BI ,  Xiaolin ZHOU ,  Peng SONG ,  Xiaodong WANG

IPC: C02F3/30

Abstract: A biological nitrogen removal method based on multistage feeding and anoxic/aerobic chambers for adopting a constant flow operation mode, enabling wastewater subjected to primary treatment to enter a first-stage and a second-stage A/O reaction units from two position points; lifting and refluxing an effluent to an influent end of the first-stage units; lifting and refluxing an effluent to an influent end of the second-stage units; and clarifying, separating and discharging an effluent from an outlet end of a third-stage A/O reaction unit. The wastewater treatment mode combines a process based on two-stage wastewater feeding and three-stage anoxic/aerobic chambers with biofilms in different reaction zones, =optimizing and controlling a reflux ratio of each segment according to an amount of organic matters available for denitrification in influent, reducing the impact of hydraulic loading at the cross section in the reactors while removing organic matters and nitrogen-containing pollutants at a low temperature.

公开(公告)号：US11447419B2

公开(公告)日：2022-09-20

申请号：US17053424

申请日：2019-12-30

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Dongshuai Hou ,  Xinpeng Wang ,  Mengmeng Li ,  Qihui Geng ,  Pan Wang ,  Bing Yin ,  Yue Zhang

IPC: C04B28/04 ,  C04B14/18 ,  C04B14/48 ,  C04B18/14 ,  C04B20/00 ,  C04B24/26 ,  C04B40/00 ,  C04B40/02 ,  C04B103/30 ,  C04B103/32

Abstract: The disclosure relates to the technical field of building materials, and in particular, to lightweight aggregate ultra-high performance concrete (UHPC) and a preparation method thereof. The lightweight aggregate UHPC provided in the disclosure is prepared from the following components in parts by weight: cement 220-260 parts; silica fume 100-120 parts; expanded perlite powder 120-160 parts; expanded perlite 230-260 parts; polycarboxylate superplasticizer 15-20 parts; steel fiber 76-93 parts; and water 140-160 parts, where a maximum particle size of the expanded perlite powder is 0.075 mm; and a particle size range of the expanded perlite is 0.075-0.6 mm. The lightweight UHPC prepared according to the design of the disclosure has excellent density performance, and can satisfy requirements of concrete components, etc. in service in super-long-span bridges, super high-rise buildings, and complex marine environments for lightweight, ultra-high strength, and ultra-high durability of cement-based materials, and has a relatively high promotion value.

公开(公告)号：US11440179B2

公开(公告)日：2022-09-13

申请号：US16804888

申请日：2020-02-28

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Chengjun Chen ,  Yong Pan ,  Dongnian Li ,  Jun Hong

IPC: B25J9/00 ,  B25J9/16 ,  B25J19/02 ,  G06T19/00

Abstract: A system for robot teaching based on RGB-D images and a teach pendant, including an RGB-D camera, a host computer, a posture teach pendant, and an AR teaching system which includes an AR registration card, an AR module, a virtual robot model, a path planning unit and a posture teaching unit. The RGB-D camera collects RGB images and depth images of a physical working environment in real time. In the path planning unit, path points of a robot end effector are selected, and a 3D coordinates of the path points in the basic coordinate system of the virtual robot model are calculated; the posture teaching unit records the received posture data as the postures of a path point where the virtual robot model is located, so that the virtual robot model is driven to move according to the postures and positions of the path points, thereby completing the robot teaching.

公开(公告)号：US20220142573A1

公开(公告)日：2022-05-12

申请号：US17281998

申请日：2020-02-06

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY ,  NINGBO SANHAN ALLOY MATERIAL CO., LTD.

Inventor： Changhe LI ,  Xifeng WU ,  Xin CUI ,  Yanbin ZHANG ,  Liang LUO ,  Min YANG ,  Dongzhou JIA ,  Teng GAO ,  Mingzheng LIU ,  Shuai CHEN ,  Wuxing MA ,  Bingheng LU ,  Yali HOU ,  Runze LI ,  Huajun CAO

IPC: A61B5/00 ,  A61B5/0205 ,  A61B5/024 ,  A61B5/026 ,  A61B5/08 ,  A61B5/145 ,  A61B5/318 ,  H01L41/113 ,  H01L41/193 ,  H01L41/257 ,  H01L41/45 ,  H01L35/16 ,  H01L35/30 ,  H01L31/053

Abstract: The present invention discloses a flexible sensor detection system for medical care and health, including: an information collection module, which uses a wearable device as a carrier, where flexible sensors are respectively arranged on the wearable device; an information transmission module, configured to wirelessly transmit collected information to an information processing and feedback module; and the information processing and feedback module, configured to perform grading treatment on received data information and feed back a health condition corresponding to the data information to the information transmission module, where the information transmission module compares feedback health condition data with a preset health threshold to determine whether to give an alarm. A heart rate ECG band, a breathing band, a shell temperature band, a blood flow rate band, a blood glucose band, a blood oxygen band, and a deep temperature band of the present invention are provided with the built-in flexible sensors.

公开(公告)号：US20220134257A1

公开(公告)日：2022-05-05

申请号：US17206157

申请日：2021-03-19

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： XINFU LIU ,  HUIFENG WANG ,  ZHONGXIAN HAO ,  CHUNHUA LIU ,  JI CHEN ,  FENG LIU ,  XIAOMING WU ,  PENG GAO ,  XIAOLEI WANG

IPC: B01D19/00

Abstract: The three-stage axial flow degassing device adopts an efficient degassing technology including a vertical high speed swirling field, a horizontal rapid axial flow field and a vertical reversing scrubbing field formed by a combination of vertical tubes; the first-stage degasser performs the first-stage segmental vertical high speed swirling degassing operation, removes the gas phase carried by the gas-containing fluid, and forms a primary gas and a primary fluid; the microporous uniform mixer breaks bubbles of the primary fluid and forms a gas-liquid uniform mixed flow; the second-stage degasser performs the second-stage horizontal vane wheel swirling generating rapid axial flow degassing operation, removes the gas phase carried by the gas-liquid uniform mixed flow, and forms a secondary gas and a secondary fluid; the third-stage degasser performs the third-stage vertical reversing deep degassing operation, removes liquid phase carried by the secondary gas, and forms a tertiary gas and a tertiary fluid.

公开(公告)号：US20220127946A1

公开(公告)日：2022-04-28

申请号：US17211884

申请日：2021-03-25

Applicant: Qingdao University of Technology

Inventor： Xinfu LIU ,  Qingping LI ,  Youqiang WANG ,  Chunhua LIU ,  Zhongxian HAO ,  Feng LIU ,  Ji CHEN ,  Guanghai YU ,  Xiaoming WU ,  Xiaolei WANG

IPC: E21B43/34 ,  B01D17/02 ,  B01D19/00

Abstract: The three-stage degassing and dewatering technology with vertical, horizontal and elevated T-shaped tubes combined as well as a high-frequency and high-voltage dynamic electric field dewatering technology with a mouse cage formation constructed by rod electrodes are adopted. The first-stage degasser implements a first-stage axial-flow type collision buffer degassing and dewatering operation, forming a first-stage crude oil after removing some of the gas and water in the gas-containing and water-containing crude oil. The second-stage degasser implements a second-stage elevated efficient degassing operation, forming a second-stage crude oil after removing the remaining gas in the first-stage crude oil. The rod electrode constructs a dynamic electric field with a high frequency and a high voltage, and implements a third-stage high-frequency and high-voltage rapid dewatering operation together with the elevated dewaterer, forming a qualified crude oil after removing the remaining water in the crude oil emulsion.

公开(公告)号：US20220017425A1

公开(公告)日：2022-01-20

申请号：US17488369

申请日：2021-09-29

Applicant: Qingdao University of Technology

Inventor： Ziguo WANG ,  Sheng WANG ,  Yuyan SUN ,  Guibin LIU ,  Qi YU ,  Xiaomei WAN

IPC: C04B35/628 ,  C04B35/76

Abstract: The present disclosure relates to an oxidation-induced shape memory fiber comprising a tension-bearing core material and/or a tension-bearing core material coated with an antioxidative coating, and an oxidizable pressure-bearing coating. The oxidizable pressure-bearing coating is coated outside the tension-bearing core material and/or the tension-bearing core material coated with an antioxidative coating; the oxidizable pressure-bearing coating is in compressive stress state and/or the tension-bearing core material coated with an antioxidative coating and the oxidizable pressure-bearing coating are in tension-compression balance state. The disclosure also relates to preparation and application thereof, the preparation is: reserving anchoring end, exerting tension force on tension-bearing core material and/or tension-bearing core material coated with an antioxidative coating, followed by coating oxidizable pressure-bearing coating thereon. The oxidation-induced shape memory fiber is applicable to high temperature oxidation environment.

公开(公告)号：US20220010094A1

公开(公告)日：2022-01-13

申请号：US17369129

申请日：2021-07-07

Applicant: Qingdao University of Technology

Inventor： Zuquan JIN ,  Shaochun LI ,  Yongjuan GENG ,  Dongshuai HOU ,  Anjie ZHOU ,  Jun LIU

IPC: C08K3/28 ,  C08K5/5419 ,  C08K5/41 ,  C08K3/38 ,  C04B26/04

Abstract: A nano-silver dispersion and a preparation method thereof is disclosed. The method, includes: mixing γ-aminopropyltriethoxysilane, polyvinylpyrrolidone, sodium lauryl sulfate, silver nitrate and water, and conducting a chelation, to obtain a chelating dispersion, wherein before the mixing, the γ-aminopropyltriethoxysilane is exposed to the air for less than 5 min; and dropwise adding a sodium borohydride solution into the chelating dispersion, to obtain a mixture, and subjecting the mixture to an oxidation-reduction reaction, to obtain the nano-silver dispersion.

公开(公告)号：US11215719B2

公开(公告)日：2022-01-04

申请号：US17211891

申请日：2021-03-25

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Wenfeng Liu ,  Zheng Zhou ,  Jianfeng Li

IPC: G01V1/00 ,  G06N3/04 ,  G01V1/30 ,  G06N7/00 ,  G06N3/08

Abstract: A performance-level seismic motion hazard analysis method includes: (1) extracting seismic motion data and denoising the data; (2) extracting feature parameters from the data, and carrying out initialization; (3) generating a training set, an interval set and a test set; (4) training a multi-layer neural network based on the training set; (5) training output values of the neural network based on the interval set, and calculating a mean and a standard deviation of relative errors of the output values; (6) training the neural network based on the test set to determine output values, and calculating a magnitude interval based on an interval confidence; (7) carrying out probabilistic seismic hazard analysis to determine an annual exceeding probability and a return period of a performance-level seismic motion; and (8) determining a magnitude and an epicentral distance that reach the performance-level seismic motion based on the performance-level seismic motion and consistent probability.