一种同轴式减压器的试验研究

本文提出了一种新型减压器结构—同轴式结构,并建立了同轴式减压器试验平台,进行了动态试验。试验结果表明:本文提出的同轴式减压器结构紧凑、调节灵活、具有±2.0%的调节精度,满足某装置对原料气体的大流量快速调节要求。同时验证了这种实验方法的可行性,对今后同类减压器的设计和试验具有一定的指导作用。     

流量计式减压器的校准方法和实例

气体减压器是一种提供稳定压力输出的仪器仪表,被广泛应用焊割、化工、医药卫生、电子工业等领域。文章阐述了流量式减压器的结构和功能,以及整体校准与拆卸后校准两种方法进行比较。并通过实例重点介绍了对流量式减压器整体的校准方法。     

同轴脉冲探头的校准与测试探讨

对一种结构新颖的同轴脉冲探头的工作原理和测试方法进行了讨论.同轴脉冲探头由一段硬同轴线和集成于其中的电场传感器构成,用于测试传导型电磁脉冲电流或电压的时域波形.由于没有磁芯结构,同轴脉冲探头的高频响应和承载功率性能都优于普通电流探头,在传导型电磁脉冲测试方面具有一定优势.本文采用频域内的软件补偿方法,通过传输函数对同轴脉冲探头进行了校准, 校准后的测试结果与实际脉冲波形数据的误差率不大于15%,具有较高的测试准确度.     

长轴系船舶分段式艉管找中的安装工艺

针对目前在长轴系船舶上采用油润滑轴承分段式艉管应用案例相对较少的情况,对某公务船轴系在实际生产设计施工过程中艉管形式的选择和艉管找中定位工艺的确定进行研究,并详细介绍艉管找中具体施工工艺及注意事项。采用该工艺建造后,船舶前、中、后轴承同轴度符合标准。     

双向行驶渡船同轴螺旋桨设计体会

介绍了双向行驶渡船采用同轴旋转螺旋桨的叶型选择、两只螺旋桨的功率分配、以及正倒车桨的效率比率如何确定,并介绍了在设计型线时所采取的有关措施。     

表面式永磁体单元的研究

本文主要讨论大功率永磁电机用表面式转子磁路结构永磁体单元的设计、制造、装配和测试方面的技术问题.并介绍了带极靴的表面式永磁体单元结构型式的实现方法.     

液化石油气切割工艺(续)

2.丙烷减压器上海减压器厂试制的QW_2-1.6/25型丙烷减压器(图5),性能稳定,调节灵敏。基本参数如下:     

12 000 kN船用构件力学性能测试平台研发

介绍自主研发的12?000?kN船用构件力学性能测试平台,该平台可以实现对各种船用钢结构件的力学性能测试。采用模块化设计技术,研发了半潜式分段机身结构及多功能测试装置,探讨双缸同步加载、大液压缸防冲击等技术与方法;并介绍集系统控制与状态监测为一体的软件系统。结果表明：该平台技术先进、测量精度高、测量范围广、使用方便。     

自升式风电安装船桩腿上拔水力减阻系统研究

自升式平台船在工程中经常出现桩腿上拔困难。文章介绍了针对自升式平台船设计的2种新型水力减阻系统,并设计准原型模型试验和拔桩阻力测试,验证了上述2种水力减阻系统减少拔桩阻力效果显著。提升了拔桩成功率,提高了拔桩效率,扩大了自升式平台船的适用土层范围。     

高速永磁推进电动机系统发展现状及展望

在电力推进系统中,可采用高速永磁推进电机满足高转矩密度和高功率密度的应用要求。本文分析了高速永磁推进电机显著特点,介绍了机械齿轮减速、同轴磁齿轮减速,PDD准直驱式永磁电动机,磁悬浮轴承和无轴承电机工作原理。展望了高速永磁推进电机系统的发展趋势。     

33rd International Conference on Ocean,Offshore and Arctic Engineering （OMAE2014）

正San Francisco,California,June 8-13,2014.OMAE 2014 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to:·meet and present advances in technology and its scientific support;·to exchange ideas and experiences whilst promoting technological progress and its application in industry·to promote international cooperation in ocean,offshore and arctic engineering.In line with the tradition of excellence of previous OMAE conferences,more than 900 technical papers are planned for presentation.Outreach for Engineers Specialty Forum This Specialty Forum is designed for students and professionals who may not be familiar with the Ocean and Offshore industry,as well as those who have just recently specialized in this field.     

Errata

正In the paper"Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of The Gulf of Mannar,India"in Vol.12,No.4,Page:509,References were lost,and the two authors’biographies were identical.The correct text is shown below.We apologize to the authors and our readers for any inconvenience caused by the errors.     

Journal of Marine Science and Application 2014 Sum. Contents

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第34届海洋、离岸及极地工程国际会议(英文)

正St.John's,Newfoundland,Canada,May 31-June 5,2015 OMAE2015 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to: meet and present advances in technology and its scientific support;     

联合作战计划和执行系统

全球指挥控制系统(GCCS)实施当前美国海军网络中心战信息基础设施的联合计划网络。联合作战计划和执行系统(JOPES)支持GCCS实现联合计划。JOPES有两类计划：时间不限的精密预案计划生成作战计划、方案计划或职能计划；时间敏感的危机行动计划生成作战命令或战役方案。前者在和平时期创建的作战计划是后者的计划基础，加速应付危机的能力。     

The 11th International Conference on Hydrodynamics (ICHD 2014)

正19–24 October 2014 SingaporeCONFERENCE THEMES The overall aim of the ICHD Conference is to provide a forum for participants from around the world to review,discuss and present the latest developments in the broad discipline of hydrodynamics and fluid mechanics.The first International Conference on Hydrodynamics(ICHD)was initiated in 1994 in Wuxi,China.Since then,9 more ICHD conferences were held subsequently in Hong Kong,Seoul,Yokohama,Tainan,Perth,Ischia,Nantes,Shanghai and St Petersburg.Evidently the ICHD conference has become an important event among academics,researchers,engineers and operators,working in the fields closely related to the science and technology of hydrodynamics.The 11th ICHD will be held in Singapore in 2014.     

第十二届深水操作会议和展览会(英文)

正November 4-6,2014Moody Gardens HotelConvention Center/Galveston,TX The Deepwater Operations Conference and Exhibition is celebrating its 12th anniversary this year.This growing event will continue the tradition of excellence in addressing operational challenges involved in developing deepwater resources.We will return to the Moody Gardens Hotel and Convention Center on November 5-7,2014 in Galveston,Texas.     

Eastbound or westbound ?

In terms of equal sailing distances, where is the inflexion when ships depart from ports in the Asian Continent to New York via Suez and/or Panama？
The answer is China South Port Group （Hong Kong, Shenzhen and Guangzhou）.     

舰艇反鱼雷技术

对目前舰艇反鱼雷技术中的非杀伤、软杀伤和硬杀伤等比较先进的手段进行了阐述,并在此基础上分析研究了舰艇反鱼雷技术的发展趋势。     

桥梁防撞设施物理模型试验

物理模型试验是预报防撞设施所受撞击力及优化设计方案的主要方法之一。结合杭州湾大桥柔性防撞设施及东海大桥独立式防撞体设计方案,阐述了船—防撞体撞击试验的基本原理、方法、试验方案及相关试验结果。提出了柔性防撞系统的优化方案。试验结果表明,该方案经济有效,可供预报类似桥梁防撞设施撞击力时参考。