9000 HP绿色环保型海洋平台供应船设计与研究

介绍在建9 000 HP海洋平台供应船设计中对主尺度、总布置、型线设计、电力推进系统、燃油驳运及货油输送系统、甲醇系统、对外消防系统,以及动力定位系统等设计技术问题的处理.     

超大型风机安装平台自升状态下的运动响应频域分析

针对自升自航式海上风机安装作业平台在风浪较大的海上风电场区域作业时风、浪、流载荷较大,影响安全的问题,基于SESAM软件,建立海上风机安装作业平台有限元模型,在频域内计算了波浪载荷和运动响应传递函数,并进行响应谱分析。结果表明,平台运动响应受波浪周期和浪向角的影响较大,当桩腿接近海底时,有可能对导致桩腿触底,在船舶设计以及船舶实际作业时应注意避免这种现象发生。     

直流配电技术电力推进系统在物探船上的应用

分析物探船对推进系统的要求,同时分析针对低噪声、低振动、低转速高牵引力、电能质量的要求,推进系统采取的相应措施。对基于直流配电技术的电力推进系统特点和关键技术进行分析,说明基于直流配电技术的电力推进系统可以很好地满足物探船作业工况时的要求,具有广阔的应用前景。     

基于CFD方法求取供应船位置水动力导数回归公式

以动力定位船为研究对象,通过船型变换生成供应船的系列船型。基于CFD数值模拟约束模平面运动机构（PMM）试验中的斜拖试验,得到系列船型在不同漂角时所受的横向力和转艏力矩,经最小二乘法拟合求得各船型的位置水动力导数。在此基础上,通过多元回归,得到位置水动力导数关于船型参数的回归公式,以为设计阶段动力定位船位置水动力导数的确定提供简便的方法。     

AIS应用与发展

以船舶安全航行为目的,结合AIS的由来、基本功能及组成,并与现有船舶导航设备进行比较的方法,介绍了AIS在VTMS和船舶避碰中起到的作用,探讨AIS今后的研究方向.分析结果表明:进入互联网的AIS将成为未来的发展趋势.     

Virtual hull monitoring of a naval vessel using hindcast data and reconstructed 2-D wave spectra

A novel virtual hull monitoring approach is assessed using full-scale measurements from a naval vessel trial to address two questions. First: Can this technique accurately reproduce stress spectra from measured strains? Second: Are responses calculated using reconstructed two-dimensional wave spectra from hindcast data more accurate than those using simpler wave representations? Stresses calculated using wave hindcast data, ship track information, and stress transfer functions compare favorably to those derived from strain gauge measurements at five structural locations. Wave conditions are represented using a spectrum model along with bulk spectral parameters (significant wave height, peak period, and primary direction) from hindcast datasets and by reconstructing two-dimensional spectra from hindcast partition data. Both approaches give good agreement with strain measurements but using the more-detailed reconstructed two-dimensional wave spectra yields better results. Results suggest that wave hindcast data are sufficient for accurate structural calculations, encouraging further study of virtual hull monitoring using wave hindcast data.     

打桩船桩架强度及稳定性校核计算

桁架式结构因型式和载荷的多样性，其结构计算一直以来是一个难题，因此采用有限元计算方法计算校核打桩船桩架在海上作业和拖航工况时的强度和稳定性，为船舶桁架式结构计算提供了一种化繁为简的方法。     

大型集装箱船加装混合式脱硫系统船体设计

基于多型超大型集装箱船加装镁基法混合式脱硫系统工程项目,从船体设计的角度分析总结了改装要点。根据混合式脱硫塔系统新增的设备和舱柜,以及布置和系统上的要求,重点研究了加装过程中烟囱外形和结构尺寸、舱柜布置、烟囱振动以及防沉淀等关键技术问题。本文为大型箱船或其它船型安装混合式废气脱硫提供了技术参考和设计经验。     

压力容器全过程质量控制

压力容器在生产过程中的质量控制对其使用性能影响很大,为更好地控制产品质量,使设备性能达到预期,文章列举了近几年出现的压力容器的典型腐蚀问题,剖析腐蚀原因,总结经验教训,并对后续项目的执行提出建议和意见,以避免类似问题的重复发生。     

Autonomous technologies in short sea shipping: trends,feasibility and implications

ABSTRACT

The maritime industry has been continuously transforming the nature of its business and striving to embrace technology in many aspects. In this context, autonomous technologies have been receiving momentum with a potential to revolutionise the landscape of shipping industry. After conducting a comprehensive literature review on the issues facing by the short sea shipping (SSS) industry, a model is developed to explore the potential savings of removing crew and use of autonomous technologies through a Continuously Unmanned Ship (CUS) that is operated by a Shore Control Centre (SCC). The analysis shows that autonomous technologies are viable to the challenges that the shipping industry is facing in terms of crew costs and skill shortage. To validate this statement, a case study is selected and various scenarios were tested based on relevant operational and financial considerations, including crew arrangement, cargo utilisation levels and shore wage coefficients. The results suggest that the savings occur in demand-uncertain markets and where a network of vessels are operated via a control centre. While autonomous technology use in shipping holds promise, there remain several limitations that this research addresses in terms of implementation, commercial attractiveness, risk profile, legislative, workforce planning and port operations.