公开(公告)号：US11118646B2

公开(公告)日：2021-09-14

申请号：US16495022

申请日：2018-02-28

Applicant: Dalian University of Technology

Inventor： Zhiyu Jiang ,  Zhengru Ren ,  Wei Shi ,  Dezhi Ning

IPC: F16F7/10 ,  F03D13/10 ,  F03D13/25 ,  F16F7/108 ,  F16F7/116

Abstract: An active tuned mass damper applied to the offshore monopile wind turbine belongs to the field of marine technology. A mass block is connected to the inner wall of the tower through a spring. The two ends of the damper and the force actuator are connected to the mass block and the inner wall of the tower, respectively. When the installation of tower is finished, the spring and the damper begin to work. The movement of mass block will partly offset the movement of the tower caused by the wave force. The force actuator starts to work before the mating. The exact position of the nacelle can be obtained from the Global Positioning System (DGPS). The position of tower can be adjusted in the horizontal plane through the force actuator. So, the offshore installation time for nacelle will be saved. The whole installation time and cost will also be reduced.

公开(公告)号：US20210276672A1

公开(公告)日：2021-09-09

申请号：US16941571

申请日：2020-07-29

Applicant: Dalian University of Technology

Inventor： Yan LIN ,  Xiaoning JIANG ,  Yanyun YU ,  Xuanyi BIAN ,  Linmao ZHANG

IPC: B63B35/32 ,  B63B1/12

Abstract: A trash skimmer boat including a hull, a connection member, a transmission, a grille assembly, and a measuring member. The hull includes two pontoons and a gap between the two pontoons, and the two pontoons are symmetrical with respect to the gap. Each pontoon includes a deck, a bottom plate, a first side plate, a second side plate, a first sealing plate, a second sealing plate, and a third sealing plate. The connection member includes two longitudinal bars and two transverse bars connecting to one another to form an octothorpe-shaped frame. The transmission comprising a motor, a drive wheel, a driven wheel, a connection plate, and a conveyor belt. The grille assembly including a plurality of flat grilles and a curved grille. The measuring member including a T-shaped frame and a probe. The gap is disposed between two second side plates.

公开(公告)号：US11105758B2

公开(公告)日：2021-08-31

申请号：US16761474

申请日：2019-08-12

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xudong Wang ,  Haiyang Duan ,  Man Yao

IPC: G01N25/72 ,  B22D11/16 ,  G06F17/18 ,  G06N20/00 ,  B22D11/18 ,  G06F30/00 ,  B22D11/051 ,  G06K9/62 ,  B22D46/00 ,  G06K9/46

Abstract: A prediction method for mold breakout based on feature vectors and hierarchical clustering is disclosed, which comprises: respectively extracting temperature feature vectors of historical data under sticking breakout and normal conditions and on-line actually measured data to establish a feature vector sample set; performing normalization and hierarchical clustering on the sample set; and checking and judging whether the feature vectors extracted on line belong to a breakout cluster, and then identifying and predicting mold breakout. The method avoids the steps of tedious adjustment and modification of alarm threshold and other parameters, overcomes the artificial dependence of the previous breakout prediction method, has good robustness and mobility; and through temperature feature extraction, achieves accurate identification of sticking breakout temperature patterns, avoids missing alarms and significantly reduces the number of times of false alarms, and greatly reduces the data calculation amount and calculation time, guaranteeing the timeliness of on-line prediction.

公开(公告)号：US20210253428A1

公开(公告)日：2021-08-19

申请号：US17265199

申请日：2019-07-05

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Rongwen LYU ,  Minghui LIU ,  Yingcen LIU ,  Hua LIN ,  Caicheng SONG

IPC: C01B32/15 ,  C08G14/02 ,  C01B32/05

Abstract: A method to make heteroatom doped polymer nanosphere/carbon nanospheres uses aromatic amine and aldehyde as raw materials, and in the presence of a compound represented by formula I, reacts the aldehyde with the compound represented by formula Ito form a Schiff base, and then reacts the aromatic amine with the resulting Schiff base, wherein the reaction is conducted in an aqueous solution system at a mild reaction temperature (10° C. to 50° C.) under stirring. The resulting polymer nanospheres are subject to centrifugation and drying, followed by roasting in an inert atmosphere to obtain carbon nanospheres. The nanospheres product prepared using the method has controllable dimensions and morphology, an even particle size, and homogeneously doped heteroatoms.

公开(公告)号：US11087966B1

公开(公告)日：2021-08-10

申请号：US17052465

申请日：2020-05-26

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Hongbin Ding ,  Yuanjie Hao ,  Ding Wu ,  Chunlei Feng ,  Cong Li ,  Ran Hai

IPC: H01J49/24 ,  H01J49/16 ,  H01J49/40

Abstract: A mass spectrum resolution device for measuring laser ablation ion species with improved time of flight mass spectrometry includes a vacuum system unit, a plasma production unit, and a particle restraint selection and separation unit, wherein the particle restraint selection and separation unit comprises a particle limit selector and a plurality of ion pulse accelerated electrode plates; the particle limit selector comprises a restrainer lifting block, a restrainer and a restrainer selection baffle; a through hole is formed in the restrainer lifting block; a plurality of circular holes with different apertures are formed in the restrainer selection baffle, and the restrainer and the restrainer selection baffle are arranged in the restrainer lifting block and can move; and the ion pulse accelerated electrode plates are arranged in the advance direction of particles and are axially parallel to the restrainer lifting block.

公开(公告)号：US20210239326A1

公开(公告)日：2021-08-05

申请号：US17053043

申请日：2019-03-25

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Haichao WANG ,  Xiaozhou WU ,  Ruoyu ZHANG ,  Lin DUANMU ,  Xiangli LI

IPC: F24D10/00 ,  F24D3/18 ,  F24D19/10 ,  F28F25/02 ,  F24D12/02 ,  B01D53/50 ,  B01D53/34 ,  B01D53/78

Abstract: An energy-saving system using electric heat pump to recover flue gas waste heat for district heating uses flue gas waste heat recovery tower to absorb the sensible and latent heat in the high-temperature flue gas by direct contact heat and mass transfer. The circulating water is sprayed from the top and the flue gas flows upwards in the tower. The electric heat pump is indirectly connected with circulating water through the anti-corrosion and high-efficiency water-water plate heat exchanger. The return water of the heat-supply network enters the electric heat pump through the anti-corrosion and high-efficiency water-water plate heat exchanger and exchanges heat indirectly with the high-temperature circulating water. The electric heat pump uses the electric energy of the power plant as the driving power.

公开(公告)号：US11079239B2

公开(公告)日：2021-08-03

申请号：US17031829

申请日：2020-09-24

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Wenya Zhou ,  Zhentao Nie ,  Feng Yang ,  Kai Liu ,  Guanjun Wang ,  Zhe Li ,  Honggang Xu ,  Feixiong Gao

IPC: G01C21/20 ,  G05D1/10 ,  B64G1/62

Abstract: A method for directly planning a reentry trajectory in a height-velocity profile includes the following steps: S1, extracting an actual working parameter of an aircraft, setting the maximum value {dot over (Q)}max of a stagnation point heat flux, the maximum value qmax of dynamic pressure, and the maximum value nmax of overload according to the mission requirement, and solving the height-velocity boundary of the reentry trajectory, that is, a lower boundary of the reentry trajectory in the height-velocity profile; S2, solving a reentry trajectory of an initial descent stage according to differential equations of reentry motion, and determining a starting point of a trajectory of a gliding stage according to the trajectory of the initial descent stage; and S3, planning a trajectory in the height-velocity profile satisfying terminal constraints based on the lower boundary in the height-velocity profile, and calculating a corresponding bank angle, to obtain the reentry trajectory.

公开(公告)号：US11073455B2

公开(公告)日：2021-07-27

申请号：US16603728

申请日：2018-07-17

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Qingchao Sun ,  Qingyuan Lin ,  Bao Zhang ,  Xiaokai Mu ,  Bin Yang

IPC: G01N3/36 ,  G01M7/02 ,  G01M7/08 ,  G01M13/00

Abstract: The present invention belongs to the technical field of mechanical testing devices, and provides a transverse load stepless amplitude modulation device of multiple bolt loosing tester. The transverse load stepless amplitude modulation device of multiple bolt loosing tester consists of four parts: a transverse load stepless amplitude modulation part, a transverse load transmission part, a torque load transmission part and an axial load transmission part. The transverse load stepless amplitude modulation device of multiple bolt loosing tester of the present invention provides stepless amplitude modulation continuous transverse loads for a flange bolt set and guarantees the accuracy of the transverse loads through a feedback control system.

公开(公告)号：US11066805B2

公开(公告)日：2021-07-20

申请号：US16477184

申请日：2018-03-19

Applicant: Dalian University of Technology

Inventor： Jianbo Li ,  Weihong Liu ,  Zhiyuan Li ,  Gao Lin

IPC: E02D33/00 ,  E02D27/32 ,  G01H15/00 ,  E02D27/34

Abstract: A measuring device and method for horizontal dynamic impedance of specified foundation depth based on differential response analysis of pulse excitation. The measuring method is realized based on the measuring device. Two rigid piles with different lengths are embedded into different foundation depths. Motion characteristics of the two rigid piles in the process of collision impact with the outside are different under the same pulse excitation. Dynamic impedance of specified foundation depth is deduced from the formula according to the differential response. Single-degree-of-freedom oscillators are arranged on the pile heads of the two piles, and strain gauges are arranged on the bottoms of the single-degree-of-freedom oscillators to obtain stress states of the single-degree-of-freedom oscillators, thereby calculating the relative displacements of the single-degree-of-freedom oscillators. This is simple in structure, reliable in measurement and convenient in data collection and processing.

公开(公告)号：US20210209275A1

公开(公告)日：2021-07-08

申请号：US17059008

申请日：2019-08-09

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Li ZOU ,  Lizhi TANG ,  Zhe SUN ,  Yanshun ZHU ,  Yuguo PEI ,  Zhiqiang WANG ,  Weitong XU ,  Guoqing JIN ,  Zhen WANG

IPC: G06F30/28 ,  G06F30/17

Abstract: The present disclosure provides a parameter design and numerical simulation method for jet trencher nozzle, comprising the following steps: S1. designing parameters of nozzle; S2. selecting the parameters of nozzle; S3. establishing a geometric model; S4. setting boundary conditions and delineating grids; S5. performing numerical simulation using Flow-3D; and S6. performing results processing and analysis. According to the present invention, the whole process of nozzle flushing and ground breaking can be simulated, the size of the cross-section of the flushing trench is measured, and by analyzing the obtained result, the reasonability of nozzle radius parameter design can be verified, and a certain reference is provided for design of inclination angle parameters.