公开(公告)号：US20170338802A1

公开(公告)日：2017-11-23

申请号：US15519823

申请日：2014-12-01

Applicant: HARBIN ENGINEERING UNIVERSITY

Inventor： Yuxin Zhao ,  Chang Liu ,  Harbin, Heilongjiang Zhang ,  Liqiang Liu ,  Gang Li ,  Feng Gao ,  Ning Li ,  Zhifeng Shen ,  Zhenxing Zhang ,  Zhao Qi

IPC: H03H17/02

CPC classification number: H03H17/0282 ,  G06F17/50 ,  H03H17/0202 ,  H03H2017/021

Abstract: The present invention provides an actually-measured marine environment data assimilation method based on sequence recursive filtering three-dimensional variation. The method includes: preprocessing actually-measured marine environment data; calculating a target function value; calculating a gradient value of a target function; calculating a minimum value of the target function; extracting space multi-scale information from the actually-measured data; and updating background field data to form a final data assimilation analysis field. The present invention improves the traditional recursive filtering three-dimensional variation method, and sequentially assimilates information with different scales, thereby effectively overcoming the problem that multi-scale information cannot be effectively extracted by a traditional three-dimensional variation method. A high-order recursive Gaussian filter is used, and a cascaded form of the high-order recursive filter is converted into a parallel structure, so that the recursive filtering process of the recursive Gaussian filter can be executed in parallel, and many problems caused by a cascaded filter are overcome.

公开(公告)号：US12227671B2

公开(公告)日：2025-02-18

申请号：US17951125

申请日：2022-09-23

Applicant: Harbin Engineering University

Inventor： Jun Wang ,  Jiawei Tang ,  Rongrong Chen ,  Qi Liu ,  Jingyuan Liu ,  Jing Yu ,  Jiahui Zhu ,  Gaohui Sun ,  Peili Liu

IPC: C09D175/04 ,  C09D5/16

Abstract: A polypyrrole-graphene/polyurethane antifouling coating as well as a preparation method and an application thereof are provided. The polypyrrole-graphene/polyurethane antifouling coating includes component A and component B, wherein the component A mainly includes the following raw materials in parts by weight: 500 parts of group-hydrolyzable polyurethane prepolymer, 25-50 parts of bentonite, 25-50 parts of titanium dioxide, 60-120 parts of zinc oxide, 15-30 parts of talcum powder, and 15-30 parts of polypyrrole-graphene nanofiller; and the component B mainly includes the following raw materials in parts by weight: 5-7 parts of leveling agent, 5-7 parts of defoamer, 6-15 parts of chain extender, 10-25 parts of silane coupling agent, and 1-2 parts of catalyst. The two-component polyurethane coating of the present invention has relatively good adhesion, collision resistance and cracking resistance, and the antifouling property and the antifouling durability can be improved.

公开(公告)号：US12209549B2

公开(公告)日：2025-01-28

申请号：US18085628

申请日：2022-12-21

Applicant: Harbin Engineering University

Inventor： Long Liu ,  Yan Peng ,  Changfu Han ,  Haicheng Qi ,  Li Huang ,  Wenzheng Zhang

IPC: F02D41/24 ,  F02D41/26 ,  G06F30/17 ,  G06F111/10

Abstract: Disclosed is a combustion system design method based on a target heat release rate, which belongs to the technical field of diesel engine combustion chamber design. The method includes: obtaining an ideal heat release rate based on Sabathe-Miller cycle; simulating the ideal heat release rate based on a double-Wiebe function and obtaining the target heat release rate; constructing a mapping relation among the heat release rate, piston geometric parameters and fuel injection parameters, which includes target start of combustion being an function of fuel injection timing and ignition delay, premixed combustion parameters being functions of throat radius, injection pressure and nozzle diameter, and diffusion combustion being a function of piston pit depth; solving target piston geometric parameters and target fuel injection parameters based on the mapping relation; and then designing a combustion system. The method does not depend on experience and multi-scheme design, greatly shortens the combustion system design.

公开(公告)号：US12130202B2

公开(公告)日：2024-10-29

申请号：US17801178

申请日：2022-06-28

Applicant: HARBIN ENGINEERING UNIVERSITY

Inventor： Zhitao Wang ,  Jian Li ,  Liang Ming ,  Shuying Li ,  Jiayi Ma ,  Tianhao Guan ,  Jiafan Luo

IPC: G01M15/14 ,  G01M15/02

CPC classification number: G01M15/14 ,  G01M15/02

Abstract: The present disclosure provides a semi-physical simulation test bench and test method for a multi-machine parallel operation device of gas turbines. The gas turbines are all connected with gearbox shafts through SSS clutches, torque meters and couplers, and then a hydraulic dynamometer, an electric turbine dynamometer and a generator are independently or jointly driven through couplers and torque meters so as to charge a storage battery. Multi-shaft gearboxes comprise parallel operation gearboxes, and are connected with a bridging gearbox through couplers, electromagnetic clutches, supports, torque meters and couplers. The gas turbines can drive an electric dynamometer and the electric turbine dynamometer independently or cooperatively, so that the system has good operation characteristics under different working conditions. Meanwhile, the storage battery is additionally arranged, the flexibility of the test bench is improved, and the energy utilization rate is increased.

公开(公告)号：US20240309225A1

公开(公告)日：2024-09-19

申请号：US18027853

申请日：2022-09-06

Applicant: HARBIN ENGINEERING UNIVERSITY

Inventor： Rongrong CHEN ,  Shurui ZHANG ,  Jun WANG ,  Jiahui ZHU ,  Jingyuan LIU ,  Jing YU ,  Qi LIU ,  Haotian WANG ,  Peili LIU

IPC: C09D5/16 ,  C08G18/10 ,  C08G18/60 ,  C09D175/08

CPC classification number: C09D5/1675 ,  C08G18/10 ,  C08G18/603 ,  C09D175/08

Abstract: The present disclosure provides an antifouling coating and a use method and use thereof. In the antifouling coating of the present disclosure, polyaspartic acid ester is an isocyanate curing agent containing a secondary amine structure. An ester group and aliphatic properties in the polyaspartic acid ester can increase wear resistance of the coating. The polyaspartic acid ester is combined with a polyisocyanate-containing prepolymer in a component A to endow the antifouling coating with desirable toughness and elasticity, such that the antifouling coating has excellent impact and abrasion resistance. In the component A, a polydimethylsiloxane structure is introduced into the hydroxypropyl silicone oil-based isocyanate prepolymer. The polydimethylsiloxane structure can generate microphase separation with a polyurea hard segment and migrate to a surface of the coating, thereby reducing surface energy of the coating to reduce an adhesion between fouling organisms and an interface.

公开(公告)号：US20240264039A1

公开(公告)日：2024-08-08

申请号：US18291586

申请日：2023-02-28

Applicant: HARBIN ENGINEERING UNIVERSITY

Inventor： Bin ZHAO ,  Jiahao SHI ,  Xiqun LU ,  Wanyou LI ,  Hanzhang XU ,  Xuan MA ,  Xiujiang SHI ,  Zhijun SHUAI ,  Yibin GUO ,  Donghua WANG ,  Hongliang LI ,  Lieyi DONG

IPC: G01M13/04 ,  G01L5/00

CPC classification number: G01M13/04 ,  G01L5/0009

Abstract: A method for calculating coupled lubrication and dynamics characteristic parameters of a flanged bearing includes three modules: a flanged bearing journal-trust thermal elastohydrodynamic coupled lubrication module, a flanged bearing dynamics characteristic parameter calculation module and a flanged bearing relative position feedback module. It considers the joint motion law of the journal part and the thrust part, and also considers the flow, pressure and thermal continuity conditions of the lubricant on the common boundary of the flange bearing, and finally forms the journal-thrust transient coupled lubrication analysis method of the flange bearing. On the basis, considerations are further given to the stiffness and the damping characteristics of the flanged bearing under the coupled effect, thereby achieving accurate simulation of the dynamic and the tribology performance of the flanged bearing, and solving the problem of lubrication failure of the flanged bearing.

公开(公告)号：US11905916B1

公开(公告)日：2024-02-20

申请号：US18363352

申请日：2023-08-01

Applicant: HARBIN ENGINEERING UNIVERSITY

Inventor： Yipeng Cao ,  Zequn Ma ,  Chen Liu ,  Runze Zhang ,  Xinyu Zhang ,  Wenping Zhang ,  Zhuoyan Feng ,  Yuan Gao ,  Xiaochen Zhao ,  Gongmin Liu

IPC: F02M35/12

CPC classification number: F02M35/1261 ,  F02M35/1288

Abstract: A turbocharger air intake silencer with adjustable cavity space structures is provided. The turbocharger air intake silencer comprises a silencer connecting flange and a first resonator device. The first resonator device comprises a first silencer sealing plate, a first annular sound absorption cavity body, a first rotary table, a first rotary steering gear and a first valve. A first sound absorption cavity is enclosed by the first silencer sealing plate, the first annular sound absorption cavity body, the first valve and the first rotary table. A first sound absorption cavity inlet pipe is arranged beside the first sound absorption cavity. The first sound absorption cavity and the first sound absorption cavity inlet pipe form a Helmholtz resonator. The first rotary steering gear is mounted on the silencer connecting flange. The rotary steering gear is connected with a first rotary rack.

公开(公告)号：US20230381719A1

公开(公告)日：2023-11-30

申请号：US18195735

申请日：2023-05-10

Applicant: Harbin Engineering University

Inventor： Jun Wang ,  Bingtao Zhang ,  Hongsen Zhang ,  Qi Liu ,  Jiahui Zhu ,  Jingyuan Liu ,  Jing Yu ,  Rongrong Chen ,  Lele Wang

IPC: B01D69/14 ,  B01D71/42 ,  B01D69/10 ,  B01D69/02 ,  B01D67/00

CPC classification number: B01D69/145 ,  B01D71/421 ,  B01D69/14111 ,  B01D69/105 ,  B01D69/108 ,  B01D69/02 ,  B01D67/00793 ,  B01D67/00113 ,  B01D67/0013 ,  B01D67/0016 ,  B01D61/025

Abstract: The present disclosure relates to the field of materials for uranium extraction from seawater (UES), and in particular, to a photothermal photocatalytic membrane for seawater desalination and uranium extraction and a preparation method therefor. The present disclosure provides a photothermal photocatalytic membrane for seawater desalination and uranium extraction and a preparation method therefor. The preparation method includes: fixing a treated carbon cloth to a glass plate, pouring a casting solution 1 onto the carbon cloth to form a first layer of film, forming a second layer of film using a casting solution 2, and putting the second layer of film into a first coagulation bath and a second coagulation bath in sequence to form the photothermal photocatalytic membrane. The photothermal photocatalytic membrane is supported by the carbon cloth, and a surface of the photothermal photocatalytic membrane is of a micro-nano structure.

公开(公告)号：US11831225B2

公开(公告)日：2023-11-28

申请号：US17564656

申请日：2021-12-29

Applicant: Harbin Engineering University

Inventor： Long Liu ,  Qihao Mei ,  Hao Zhao ,  Zhichun Xu ,  Yuanheng Tang ,  Chen An ,  Xiao Han ,  Junjie Liu

IPC: H02K7/18 ,  H02K5/04 ,  H02K7/10 ,  H02K7/116 ,  F02B71/00 ,  F01B7/02

CPC classification number: H02K7/1869 ,  F01B7/02 ,  F02B71/00 ,  H02K5/04 ,  H02K7/10 ,  H02K7/1166 ,  H02K7/1884

Abstract: A free piston generator based on a rigid synchronous transmission system is provided, which belongs to the technical field of power energy. The present disclosure solves the problems of low power generation efficiency and low stability of the existing free piston generator. The free piston generator based on the rigid synchronous transmission system includes a first linear generator set, a second linear generator set, a rigid synchronous transmission assembly, two high-pressure cylinders arranged at two ends of the first linear generator set, and two low-pressure cylinders arranged at two ends of the second linear generator set. The combustion product is firstly subjected to first-stage expansion in the high-pressure cylinder and is then subjected to second-stage expansion in the low-pressure cylinder, which effectively increases the energy utilization in exhaust gas, also increases the expansion work, and further improves the thermal efficiency and the power generation efficiency of the free piston generator. By means of the rigid synchronous transmission assembly, high-pressure pistons and low-pressure pistons are always kept in stable phase operation, so as to avoid the problems of wall-impingement and insufficient pressure of compressed air due to the phase mismatching.

公开(公告)号：US20230312939A1

公开(公告)日：2023-10-05

申请号：US18127678

申请日：2023-03-29

Applicant: Harbin Engineering University

Inventor： Qi LIU ,  Yue SUN ,  Peili LIU ,  Rongrong CHEN ,  Jun WANG ,  Gaohui SUN

IPC: C09D5/08 ,  C09D175/04

CPC classification number: C09D5/084 ,  C09D175/04

Abstract: A polypyrrole-coated graphene corrosion inhibitor container and its preparation method and a composite coating and its application are provided. The polypyrrole encapsulated graphene corrosion inhibitor container includes graphene oxide and a polyvinylo layer encapsulated on the surface of the graphene oxide. The invention is based on a polymerization reaction by mixing a polypyrrole acid solution, a graphene oxide dispersion, and an initiator to obtain a polypyrrole encapsulated graphene corrosion inhibitor container. The polypyrrole encapsulated graphene corrosion inhibitor container regulates the release rate of the corrosion inhibitor by wrapping the polypyrrole around the graphene oxide so that it is released rapidly in alkaline solutions and at a slower rate in neutral media. The results of the practical example show that the polypyrrole encapsulated graphene corrosion inhibitor container can regulate the release rate of the corrosion inhibitor and has excellent corrosion protection properties and corrosion protection durability.