大型油船槽形舱壁结构形式设计及模糊综合评判

文章从规范设计角度入手,设计采用单面斜壁顶凳、双面直壁顶凳、双面直壁较矮顶凳和横舱壁无顶凳四种顶凳结构形式的槽形舱壁,并进行强度评估.在满足规范要求的前提下,考虑到最大货舱舱容、最轻空船重量、最小应力、最佳工艺性等主要技术指标进行模糊综合评判,优选出综合经济性最好的结构形式.     

我国移动式修井平台发展综述

介绍了我国移动式修井平台的应用概况,分析了多功能支持平台在我国海上油田的修井作业模式,对我国多功能支持平台未来的发展提出了建议。     

双作用式变量叶片泵探讨

双作用式变量叶片泵是一种新型变量泵.本文阐述了其变量原理,分析了变量系数与定子偏转角、定子曲线的关系,进而讨论了困油问题及其消除的方法.     

RT-flex主机的应用及特殊电气故障的排除

主机试验是船舶系泊试验中最重要的试验之一,在实验及调试过程中出现的问题也很特殊,解决并处理好这些问题对于船舶的系泊及航行试验的顺利进行起着至关重要的作用.总结了RT-flex电喷系列主机在试验现场发现的电气问题及解决的方案,供技术人员参考.     

谈小型油船利用双层底舱装运货油违章行为处置

文中分析了部分小型油船利用双层底舱装运货油为多赚运费的违章行为,指出了违章原因,并提出了相应的建议。     

油船间货油海上过驳海事监管探析

文中专题分析2009年MAI（POL公约附则I修正案“关于防止油轮间海上货油过驳期间造成污染”的履约要求和我国海事监管存在的问题,并提出相应对策建议,以期全面履约和实现对我国管辖海域内的油船间货油过驳作业的有效监管     

船舶压载水不同处理方法的经济性分析

对船舶压载水不同处理方法所需费用和代价进行了简要评述。     

Time-variant ultimate longitudinal strength of corroded bulk carriers

Many bulk carrier losses have been reported of late, and one of the possible causes of such casualties is thought to be the structural failure of aging hulls in rough weather. In aging ships, corrosion and fatigue cracks are the two most important factors affecting structural safety and integrity. This paper uses a set of the time-dependent corrosion wastage models for 23 different member locations/categories of bulk carriers previously developed by the authors, based on the available corrosion measurements for existing large bulk carrier structures. Differences due to the location and corrosion severity of every member type are taken into account. The nominal design corrosion values for the primary members are suggested based on the annualized corrosion rates obtained in the present study. The effect of time-variant corrosion wastage on the ultimate hull girder strength as well as the section moduli is studied. The criteria for repair and maintenance of heavily corroded structural members so as to keep the ultimate longitudinal strength at an acceptable level are discussed. Important insights and conclusions developed are summarized.     

"大源湖"号油船尾管异常声响分析与对策

从“大源湖”号油船在满载航行时产生尾管异常声响现象,经研究和理论计算,查找出产生的原因,提出经济而简单的解决措施。由此对大型船舶提出一个共性问题,轴系校中应考虑船体变形的影响,防止事故发生。     

穿梭油船货油泵电机基座的强度分析与模态分析

基于有限元法,对某穿梭油船货油泵电机基座进行多工况强度分析与模态分析,计算其固有频率,并对比主机、螺旋桨等激励源频率,分析共振可能性.在分析过程中采用点质量方式简化电机质量,以壳单元代替基座实体模型,通过DesignModeler软件建立模型、划分网格和约束边界条件,显示应力和变形计算结果,对设计方案的评定和优化具有较...