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文中阐述了核动力在民用船舶上应用的必要性,将核动力船舶与常规内燃机动力船舶的各性能进行了比较,指出了核动力应用于民用船舶局限性及应用对策,说明核动力在民用船舶上应用的可行性。 相似文献
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本文以民用核动力船舶的发展方向为立足点,充分考虑民用核动力船舶的安全性、可靠性、冗余性、经济性设计需求,给出了不同用途下的民用核动力船舶电力系统解决方案。此外,针对自航类核动力船舶所有交流电源失效的可能性和救援的时差性,提供了一种增加附加直流电源来保证安全性的解决方案。 相似文献
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人类发展核动力船舶已有50多年历史,建造过数百艘军用和民用核动力船舶,船用核动力装置已发展到第三代,而其他各种形式的新能源船舶多尚处于探索和起步阶段。因此对于大型、超 相似文献
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核动力船舶具有较好的应用前景,电力系统为船舶核反应堆的负荷提供必需的电力供应,是与反应堆的安全性紧密相关的重要系统。论文对俄罗斯、法国、美国的核动力船舶电力系统进行了分析,总结了电力系统设计的特点以及发展趋势,总体而言,各国核动力船舶电力系统均极为注重冗余配置,一般每座反应堆至少对应配置两台柴油发电机组,且逐渐向着机组数量减少、单机功率增大、电气化水平提升的方向发展。论文对我国未来核动力船舶电力系统的设计具有重要的借鉴和参考意义。 相似文献
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英国巴布科克国际集团(Babcock)海事部门研究发现,在LNG船上应用核动力无论在技术上还是商业上都具有可行性。Babcock的研究内容包括对主动力装置和辅助动力装置的核动力使用。结果发现在LNG船舶使用核动力有很多潜在益处, 相似文献
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概述环境工程标准在型号产品中的应用情况,分析了当前环境工程标准的特点、数量及其在产品的实施中发挥的作用及存在的问题,并提出了一些建议,为今后环境工程标准的修订、完善奠定了基础,为从事该项目工作人员提供参考。 相似文献
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随着舰船设计难度和工程复杂程度的增加,现有的舰船规范和标准已无法满足其要求,而型号设计准则则可以解决这一问题。设计准则是型号专用的设计指导性文件,也是质量控制的依据。文章通过分析比较型号设计准则与标准规范间的异同点,提出了建立设计准则框架体系的两个方案,并在此基础上提出了设计准则的工作定位和编制的技术途径;理解型号设计思想;结合关键技术攻关;遴选现有标准规范;统一规划,不断完善。最后,对设计准则的标准化转换工作给予了讨论。 相似文献
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结合工程实例论述了小型LNG运输加气船总体方案的设计过程,重点阐述了该型船的设计特点、设计规范、标准等,对相同、相近型船的设计具有很高的借鉴价值. 相似文献
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The paper outlines a rational design procedure for bridge piers and pylons against ship collision impacts. Firstly, a set of risk acceptance criteria are proposed. This is followed by a mathematically based procedure for calculation of the probability of critical ship meeting situations near the bridge, and the probability of ship collision accidents caused by human errors as well as technical errors. This first part of the paper leads to identification of the largest striking ship, “design vessels”, a given bridge pier must withstand without structural failure in order for the bridge connection to fulfil the risk acceptance criteria. The final part of the paper is devoted to an analysis of the needed impact capacity for the bridge pylons and piers exposed to ship bow impact loads from these “design vessels”. For a number of different ship types and different tonnage merchant vessels, load – displacement relations for ship bow collisions against rigid walls are derived. Based on these comprehensive numerical results, a new empirical relation is derived which is suited for design against bow collisions. This expression for maximum bow collision forces is compared with a previously published expression for ice-strengthened ships and with existing standards for assessment of bow crushing forces. It is shown that there is need for an update of these existing standards. For design of piers and pylons against local impact pressure loads, a pressure - area relation for bulbous bow impacts is derived. 相似文献
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The environment onboard a ship presents a typical example of a severe environment, displaying extreme conditions of temperature
and relative humidity, especially in the engine room. Datasheets, the international labour organization, and standards do
not provide clear information about the suitable ambience of the engine room, its design conditions, and the role of marine
engineers in preventing work-related risk. In this study, air temperature and relative humidity were monitored at several
locations onboard a merchant ship. These real monitored data were then compared with the ISO design indications to obtain
an effective work risk analysis. From these indoor temperature and relative humidity data, the corresponding parameters of
thermal comfort in the engine control room and the heat stress and sweating index of a worker in the engine room were determined.
As a function of these indices, the maximum time that a worker can stay in the engine room and the time for which he must
rest in the control room were also calculated in the present study. Some design corrections are also proposed herein to improve
these environments. 相似文献
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计算机辅助船舶概念设计系统研究 总被引:6,自引:0,他引:6
文章讨论了产品概念设计与创新的关系,概念设计与VPD和QFD的关系、船舶概念设计涵义和产品信息建模的主要特征及其与STEP、多媒体等标准的关系。最后叙述了船舶轮机舱概念设计的研制。 相似文献
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研究和编制了深海采矿船技术标准(船型评估/认可和审图);介绍了该船型的现行规范标准应用,入级符号及附加标志,送审文件,船舶设计基础及环境条件,航行及在位状态下的布放、作业、自存等工况和配套的多种组合装载模式;提出了该类船舶的评估技术标准。作为全球范围内首个专门针对深海采矿船这一新颖船型的评估技术标准,对我国自主开发、设计、建造深海采矿船具有重要指导意义。 相似文献
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结合船舶下舵承在设计、安装和船舶营运过程中面临的问题,根据船级社相应规范和标准对船舶下舵承的规定,分析舵承间隙及结构,提出相应的解决方案。实践证明该方案可行。 相似文献