广西近海溢油扩散数值模拟

利用MIKE 21 HD模块模拟广西近海二维潮流特性,根据实测水文资料对广西近海二维水动力模型进行了验证。应用MIKE 21 OS溢油模块加载广西近海二维水动力数据,建立广西近海二维溢油扩散模型,对溢油事故进行影响预测。研究结果表明,风场、潮流场和溢油事故发生位置对溢油轨迹都有着重要影响。风场是油膜漂移方向的最大影响因素,在不同溢油事故发生位置的工况下,溢油的漂移轨迹和扫海范围可能完全不同。     

船用汽轮机组油雾危害及其净化技术研究

阐述了船用汽轮机组油雾产生的原因、性质、组分和危害,并对各种油雾净化技术作了分析研究,最后确定了采用过滤吸附式油雾净化技术,样机经使用验证,不但完全解决了油雾污染问题,而且运行成熟稳定。     

阿芙拉型双壳油轮意外泄油性能研究

摘要：以110000t阿芙拉型双壳油轮为实例对货油舱进行意外泄油性能进行了分析,指出了影响平均泄油量参数oM的若干重要因素,即：载重量dwt,货舱总舱容C,惰性气体系统正常超压P,货油舱的双壳宽度和双层底高度。采用列表计算的方式简化了平均泄油量参数OM的计算过程,阐述了各因素在计算过程中对平均泄油量参数OM的影响。     

油船结构强度设计和审图要点

以32万t超大型油船为例,参照国际船级社协会油船共同结构规范的要求,对油船的结构强度设计作了详辟研究,并提出了油船结构审图中规范校核以及有限元分析时,包括屈服、屈曲、疲劳等方面应注意的问题。     

基于多功能溢油回收船的线面式溢油回收技术研究

介绍长江首艘多功能溢油回收船“海特311”的结构和性能,分析围油栏的布设方法,提出“线面式”溢油应急技术。介绍该技术的工作原理及工作效率,提出结合双体围油栏的使用的构思,以期更大限度地发挥多功能溢油回收船的作用。     

A quantitative risk analysis by using interval type-2 fuzzy FMEA approach: the case of oil spill

ABSTRACT

Risk assessment in maritime domain is one of the most cited topics since maritime transportation poses potential hazard for human life, marine environment and property. To mitigate risk and enhance safety awareness in maritime transportation, safety researchers have been seeking proactive solutions. This article prompts a quantitative risk-based approach combining interval type-2 fuzzy sets (IT2FSs) with failure mode and effect analysis (FMEA) to perform a comprehensive risk analysis. Thus, potential failure modes and their effects are revealed by calculating risk prioritisation numbers (RPNs). Whilst the FMEA method provides a robust risk analysing tool with relevant control options, the IT2FSs deals with ambiguity and vagueness of linguistic assessment of decision-makers through the FMEA. Hence, expert’s linguistic assessment in risk assessment can be transformed into useful information in terms of enhancing safety and pollution prevention in maritime industry. To demonstrate the proposed approach, potential failures and effects of a real shipboard oil spill case are handled. The findings show that incomplete information exchanged with local maritime authorities, malfunction of oil skimmer and poor organization of shoreline clean-up team are the most important failures during case of oil spill. The proposed approach provides not only theoretical insight into the maritime transportation industry but also practical contributions to chemical/oil tanker safety and environmental protection by mitigating risk in terms of technical or operational aspects.     

《原油油船货油舱保护涂层性能标准》的应用研究

文章简要介绍了《原油油船货油舱保护涂层性能标准》(以下简称"货油舱PSPC"),通过与压载舱保护涂层性能标准(以下简称"压载舱PSPC")的比较,分析了货油舱PSPC与压载舱PSPC相异的技术条款对船舶建造的影响,研究了大连中远川崎船舶工程有限公司满足货油舱PSPC实施难点的对应措施。     

Research on the impact of CeO2-based solid solution metal oxide on combustion performance of diesel engine and emissions

This paper mainly studies on the performance of high-speed diesel engines and emission reduction when the engine uses heavy oil mixed with nanometer-sized additives Ce0.9 Cu0.1 O2 and Ce0.9 Zr0.1 O2.During the test,Indiset 620 combustion analyzer made by AVL,was used to make a real-time survey on the cylinder pressure,the fuel ignition moment,and establish a relation between the change trend of temperature in cylinder and the crank angle.For the engine burning heavy oil and heavy oil mixed with additives,combustion analysis software Indicom and Concerto were used to analyze its combustion process and emission conditions.Experimental investigation shows that nano-sized complex oxide can improve the performance of diesel engine fueled with heavy oil,and reduce the emission of pollutants like NOx and CO,comparing it with the pure heavy oil.According to the consequences of this experiment,the additives improve the overall performance in the use of heavy oil.     

改变热油管道埋深对土壤温度场的影响

由于长输管道沿线地质、水文、地形等条件的差异,管道埋深在管道沿线不同的地方往往不同。在热油管道的正常运行过程中,管道埋深对管道的热力特性及管道周围的温度场有重要影响。分析了不同气候、不同埋深条件下热油管道对温度场分布的影响,为实际工程中满足工艺条件下,通过改变管埋深度减少能源消耗提供借鉴。     

车载式金属油罐有限元分析

文中利用有限元分析技术,应用ANSYS分析软件对车载式金属油罐罐体的结构强度进行了分析计算,得出在各种工况下的应力分布图.通过对计算结果的分析,找出了产生最大应力的部位及原因,为金属油罐的优化设计提供理论依据.