共查询到12条相似文献,搜索用时 31 毫秒
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《中华人民共和国船舶安全检查规则(1997)》规定:禁止对在航船舶进行安全检查。这就决定了我们无法检查到动态的作为主机使用的柴油机。而在锚地或码头对船舶进行检验时,一般船舶均有发电机在运行,这意味着能够检查到动态的船用发电柴油机,即通常所说的辅机。 相似文献
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船舶电网中的变压器并联是随着船舶中压网络的兴起,而逐步引起关注的应用方式.不管是应用于短时切换,或者是长期并联运行,都需要对其并联运行过程进行研究,分析对电网运行稳定造成影响的因素及限制的方法.文章对变压器并联运行的条件进行了理论分析,并提出了在实际船用电网中进行变压器并联需要注意的一些问题,在对典型网络和参数进行估算的基础上,提出了几个并联时需要注意的边界条件. 相似文献
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分析了船用轻柴油对主机、辅机及锅炉的影响,重点介绍了如何合理运用和设计船用轻柴油的冷却系统。随着环境保护系统的不断提高,硫化物排放的要求越来越高,船用轻柴油的应用是船舶设计中必须考虑的,是一种趋势。 相似文献
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《江苏科技大学学报(社会科学版)》2010,(6)
油船一旦发生海损事故,容易引发海上溢油事故,后果严重.为提高油船运输的安全性,以渤海海域为研究背景,建立了开阔海域油船溢油的仿真计算模型;根据国家行业标准及挪威船级社的风险评估软件Neptune计算了溢油扩展情况,预测了溢油后火灾的点燃概率及损害范围,得出船舶溢油程度与火灾后果的关系. 相似文献
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近年来,油船因静电放电而引起的重大火灾事故已占整个油船火灾事故的1/3。为了保证油船运输的安全,本文分析了油船静电产生的原因和影响因素,提出了一些预防措施。 相似文献
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《Marine Structures》2007,20(1-2):49-70
A series of new generation oil tankers is presently under construction. These ships differ from traditional oil tankers by their unusual form and therefore direct hydrodynamic analysis is used to determine design vertical wave bending moments instead of adopting IACS rule values. The purpose of the paper is to quantify changes in hull-girder reliability resulting from the new design features. To achieve this, first-order reliability analysis is carried out with respect to ultimate collapse bending moment of the midship cross section of a new generation oil tanker and of a conventional “rule” designed oil tanker. The stochastic model of wave-induced bending moment is derived from direct hydrodynamic analysis performed according to IACS Recommendation No. 34 Standard Wave Data, Rev 1, 2000. The probability distribution of the still water bending moment is assumed based on the data from loading manuals. The model uncertainties of linear wave loads, non-linearity of the response as well as load combination factors are included in the reliability formulation. The reliability analysis is performed for three relevant loading conditions: full load, ballast and partial load and for two states of the hull: the “as-built” hull and “corroded” hull according to anticipated 20-year corrosion. One of the most interesting conclusions from the study is that the annual hull-girder reliability of new generation oil tanker is increased considerably compared to the conventional oil tanker. Sensitivity and parametric studies are performed with respect to random variables representing modelling uncertainties. The results of a sensitivity study enable sorting of pertinent variables according to their relative importance, while parametric study is used to quantify changes in the reliability indices for moderate variation of input parameters. Furthermore, some other results and discussions are presented pointing out the benefits of introducing the ship reliability methods in design practice, especially if this refers to new designs. 相似文献
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介绍了舰船汽轮机组远程保护系统的设计和实施。在现有的就地保安系统的基础上增加汽轮机远程保护控制系统,并在设计中遵循保护相关原则,采用冗余技术、隔离技术和仲裁设计等一系列保护措施,使拒动率和误动率降至最低,从而达到提高机组保护功能的可靠性、确保机组安全运行的目的。 相似文献