超导专利

正[专利名称]:Superconducting Motor Cooling Device(超导电机冷却装置)[专利号]:JP2016010212A[发明人]:Meidensha Electric Mfg Co Ltd[公开日期]:2016-1-18[国别]:日本[摘要]:To provide a superconducting motor cooling device capable of easily cooling a field superconducting coil through heat conduction of interposed members.SOLUTION:A superconducting motor cooling device includes:heat conductors 15a-15d in contact with field superconducting     

交流电机专利

正[专利名称]:Motor structure applicable to severe environment(适用于苛刻环境的电动机结构)[专利号]:TW201630313A[申请人]:FUKUTA ELECTRICMACHINERY CO LTD[TW][发明人]:ZHANG JIN-FENG[TW][申请日期]:2015-02-04[公开日期]:2016-08-16[国家/地区]:台湾[摘要]:A motor structure applicable to severe environment,which includes a compulsive cooling unit in communication with a housing,under normal temperature and pressure,the compulsive cooling unit can prevent     

电池专利

正[专利名称]:Use of High-temperature Batteries for Ships(船用高温电池的运用)[专利号]:US 2016/0218405 A1[申请人]:SIEMENS AKTIENGESELLSCHAFT(DE)[发明人]:Michael KUEHNE;Michael WYCISK[申请日期]:2014-09-19[公开日期]:2016-06-28[国别]:德国[摘要]A method and arrangement for at least partially supplying an electrical system of a ship having at least one     

永磁电机专利

正[专利名称]:Electric Motor with Permanent Magnet Excitation and Rotor Cooling(带永磁励磁和转子冷却机构的电动机)[专利号]:US7816824B2[发明人]:Andreas Jockel[申请日期]:2006-06-08[公开日期]:2010-10-19[国别]:德国[摘要]:The invention relates to an electric motor(1)with permanent magnet excitation,comprising a stator(2),a rotor(8),comprising a hollow shaft(13)on which the permanent magnets(9)     

超导专利

正[专利名称]:Current Curve For A Superconducting Electrical Machine(超导电机的电流曲线)[专利号]:EP2801151B1[发明人]:Kowalski,Thomas[申请日期]:2012-12-24[公开日期]:2016-4-20[国家]:德国[摘要]:The invention relates to a motor which is provided with     

感应电机专利

正[专利名称]:Induction Motor Control(感应电机的控制)[专利号]:WO 2016/044426 A1[发明人]:FLEMING,David James;GRUNBERG Michael;NAGORNY Aleksandr,[申请号]:PCT/US2015/050429[申请日期]:2015-9-16[公开日期]:2016-3-24     

推进器专利

正[专利名称]:SHIP PROPULSION METHOD AND SHIP PROPULSION DEVICE(舰船推进方法及舰船推进装置)[专利号]:CA2941037 A1[申请人]:NIIGATA POWER SYSTEMS CO.,LTD.,JP[发明人]:SHIRAISHI,KOICHI;HATAMOTO,TAKURO;KODERA,MASANORI[申请日期]:2015-09-29[公开日期]:2017-03-29[国别]:日本[摘要]:A ship propulsion device(1)is adapted to rotate a propeller(20)to propel a ship(2).In a case where the rotating speed     

双螺旋转子波浪能发电装置的仿真与优化（英文）

This paper presents a new type of double-helical rotor wave energy converter(WEC), which consists of two isolated sets of helical rotor structures(inner and outer). This device can generate electricity by using the rising and falling energy of a wave. The rotors are simulated and optimized by Fluent. Each rotor’s blades are simulated and analyzed, which are separately changed in terms of helix angle, shape, and thickness. The simulation result shows that, for both inner and outer helical rotors,...     

2016年IEEE海洋工程分会水下航行器国际会议（英文）

正November 6-9,2016,University of Tokyo,Tokyo,JapanOceanic Engineering Society-IEEE-Autonomous Underwater Vehicles(AUV 2016)is a conference dedicated to Technology and applications of autonomous marine vehicles.Oceanic Engineering Society-IEEE-Autonomous Underwater Vehicles(AUV 2016)includes topics such as:     

Numerical method of electromagnetic pulse response of conductor with complex load北大核心CSCD

[Objectives]Electromagnetic pulse can seriously affect and even destroy naval shipborne electronic information systems, weapons, equipment and so on. Due to the complexity of the antenna port load circuit, it is necessary to formulate a numerical method which can easily obtain the antenna load current. [Methods]The induced current of the terminal is obtained on the basis of the finite-difference time-domain (FDTD) and Holland model. According to the Thévenin equivalent circuit, the conductor is equivalent to the voltage source to realize decoupling between the conductor and load end, and the load circuit is solved using Simulink software.[Results]Compared with the traditional terminal model, this method is simple and feasible for high-order circuit processing. The effectiveness of the model is verified using non-linear elements and parallel capacitors and resistors as the load respectively. The results show that the calculation results of this method are consistent with those of the traditional methods. Finally, the antenna of the end-connected protect- or is calculated. The results show that the lead inductance caused by the installation of the protector is an important factor affecting the protection performance.[Conclusions]The method proposed in this paper can greatly reduce the simulation complexity of the coupling current of an antenna with a complex load, giving it useful reference value for the field of ship electromagnetic pulse protection design. © 2023 Editorial Department of Chinese Journal of Ship Research. All Rights Reserved.     

Special requirements for alumina ceramic of ESG electrode bowl

At present ESG (Electrostatic Suspended Gyro) is the most precise inertia element in the world. The electrode bowl, which has direct effect on the precision of ESG, is a key part to ESG. Through the analysis of the function and characteristic of the electrode bowl in hollow rotor ESG and the present situation of new material development in the world, the alumina ceramic is regarded as the best material for the electrode bowl of hollow rotor ESG. By analyzing the present situation of alumina ceramic in the world, main technique requirements have been put forward for the alumina ceramic of ESG electrode bowl which is also fit for solid rotor ESG.     

Fatigue crack growth rates of rotor steel at elevated temperatures

Low fatigue samples were obtained from the outer edges of rotor steel （30CrlMolV） which had operated under different temperatures conditions. Based on this data, the effects of temperature on fatigue crack growth rates were investigated. This paper presents a derivation of the superposition expression of two natural logarithms governing crack growth rates and also discusses the relationship between a material’s constants and temperature. These results can provide experimental and theoretical references for fatigue life design of rotor steel in steam turbines.     

推进器专利

正[专利名称]:SHIP PROPULSION DEVICE(船舶推进装置)[专利号]:W02017082248A1[发明人]:SUZUKI TAKAYOSHI[JP],ISHIKAWA SATOSHI[JP],SUZUKI TOSHIO[JP][申请日期]:2016年11月08日[发表日期]:2017年05月18日[国别]:日本     

Study on the methods of precision controlling for the manufacture of hull curvature sections

1 Introduction1 The precision controlling technology is a key step for model ship construction. The core of precision controlling technology lies in reducing the scene repetition to a minimum during the course of construction and revising the working quan…     

海水风机与不同类型基座耦合的非稳态流动分析（英文）

Environmental effects have an important influence on Offshore Wind Turbine(OWT) power generation efficiency and the structural stability of such turbines. In this study, we use an in-house Boundary Element(BEM)—pan MARE code—to simulate the unsteady flow behavior of a full OWT with various combinations of aerodynamic and hydrodynamic loads in the time domain. This code is implemented to simulate potential flows for different applications and is based on a three-dimensional first-order panel method. Three different OWT configurations consisting of a generic 5 MW NREL rotor with three different types of foundations(Monopile, Tripod, and Jacket) are investigated. These three configurations are analyzed using the RANSE solver which is carried out using ANSYS CFX for validating the corresponding results. The simulations are performed under the same environmental atmospheric wind shear and rotor angular velocity, and the wave properties are wave height of 4 m and wave period of 7.16 s. In the present work, wave environmental effects were investigated firstly for the two solvers, and good agreement is achieved. Moreover, pressure distribution in each OWT case is presented, including detailed information about local flow fields. The time history of the forces at inflow direction and its moments around the mudline at each OWT part are presented in a dimensionless form with respect to the mean value of the last three loads and the moment amplitudes obtained from the BEM code, where the contribution of rotor force is lower in the tripod case and higher in the jacket case and the calculated hydrodynamic load that effect on jacket foundation type is lower than other two cases.     

航运EDI增值信息系统的开发

1 Introduction Since the 80's, EDI, as a kind of important information technology based on the computer and communication technology, has made the extremely remarkable achievement in the field of shipping. Meanwhile, with the quick development of information technology, traditional shipping EDI system faces the new demand too[1]. As we know, transmitting the information is the traditional core function of the information ser-     

开关专利

正[专利名称]:METHOD AND APPARATUS FOR SMART CIRCUIT BREAKER(适用于智能断路器的方法及设备)[专利号]:US2017140602A1[申请人]:POWER MONITORS INC[US][发明人]:CURT WALTER[US][申请日期]:2017-01-30[公开日期]:2017-05-18[国别]:美国[摘要]:A smart circuit breaker is provided.An electronic device can be     

Response of carbon fiber trapezoidal corrugated sandwich structure under air explosion loading北大核心CSCD

The effects of the thickness of the face plate, angle of the wall plate and height of the core layer on the anti-explosion performance of carbon fiber reinforced composite trapezoidal corrugated sandwich structures were investigated. [Methods]First, based on the 3D Hashin failure criterion, a subroutine module of the damage evolution of fiber reinforced composites is developed using the VUMAT user subroutine interface in ABAQUS. Second, through comparison with experiments in the public literature, the effectiveness of the dynamic response simulation method of carbon fiber reinforced composites based on a development subroutine under explosion impact loading is verified. Finally, a parametric study on the explosion resistance of carbon fiber reinforced composite trapezoidal corrugated plates is carried out based on the numerical method. [Results]The results show that, compared with increasing the thickness of the blast face panel, increasing the thickness of the back blast face panel can improve the explosion resistance of the sandwich plate more obviously; when the folding angle of the core wall plate decreases from 45° to 30°, the explosion resistance increases by 1.3%; when it decreases from 60° to 45°, the explosion resistance increases by 6.3%; and whenthecoreheightincreasesfrom8mmto20mm, theexplosionresistanceincreasesby27.7%.[Conclusions]The results of this study can provide references for the explosion-proof design of carbon fiber reinforced composite sandwich structures. © 2023 Journal of Nanjing Agricultural University. All rights reserved.     

The research on signal-obtaining pattern for a new type of gyroscope

In this paper, a photoelectric signal obtained scheme via equator triangle pattern engraved on rotor is discussed and the mathematic model is deduced in the case which is deflexion between rotor axis and the coordinate frame of case. The deflexion error and coupling error under the situation are analyzed. Finally, three methods of engraving based on the spherical triangle pattern are presented. The error models of various methods are built up and the simulation curves are provided respectively. We have done the primary experiments on the surface of rotor using this method. It can be seen from the enlarged figures that the rim of the pattern is smooth and the demand of sensor resolution is satisfied by and large. The results of study supply reference for signal obtaining.     

热带海洋大气中的3004铝和∝铜的原电池反应(英文)

The galvanic corrosion behaviour of aluminium 3004-∝brass with different area ratios was studied in the tropical marine atmosphere at Tuticorin harbour over a period of 426 days. The area ratios, viz. A Aluminium:A∝ brass, studied were 0.125, 0.25, 0.5, 1, 2, 4 and 8. The galvanic corrosion behaviour of the metals was studied in terms of the relative increase in the corrosion rate of aluminium due to galvanic coupling with ∝ brass, the relative decrease in the corrosion rate of ∝ brass due to galvanic coupling with aluminium, and the susceptibility of aluminium to pitting owing to galvanic coupling with ∝ brass. The galvanic potential and galvanic current of the system were monitored. Pits of different dimensions ranging from mild etchings to perforations were experienced on the borders and the surfaces of the interface of aluminium in contact with ∝ brass. The corrosion products resulting from galvanic corrosion were analysed using XRD and the pitting on aluminium as a result of galvanic corrosion was highlighted in terms of pit depth, size and density of pit, using a high resolution microscope. The most favourable area ratio of aluminium-∝ brass in marine atmosphere in terms of gravimetric corrosion rate is 8:1 and the most unfavourable area ratio of aluminium-∝ brass is 1:4.