LNG船液货装卸模拟器装货过程仿真

发布时间：2018-02-25 15:30

本文关键词： LNG船装货过程仿真 VB　出处：《大连海事大学》2013年硕士论文　论文类型：学位论文

【摘要】：随着石油资源消耗殆尽,全球变暖日益加剧,LNG(液化天然气)作为国际公认的清洁能源已成为化石燃料的最佳替代品。“十二五”期间,我国确定的目标为非化石能源占一次能源消费比重达到11.4%,天然气作为应用最为广泛的非化石能源,必将发挥越来越重要的作用。LNG船是专门运输LNG的船舶,到2015年,我国将需要100艘左右的LNG船从事LNG运输,需要培训大量的LNG船员和岸上工作人员,而目前我国LNG液货装卸模拟器还没有成型产品,因此,开发具有自主知识产权的LNG液货装卸模拟器用以满足我国LNG培训需求具有重大意义,符合国家建设海洋强国的发展规划。本文借鉴挪威KONGSBERG公司生产的LNG-M型液货装卸模拟器的研发经验,参考我国建造的“大鹏昊”LNG船的相关设备和船舶参数,开发了LNG船液货装卸模拟器装货过程仿真系统。以Visual Basic6.0为开发环境,设计了总目录界面、岸罐及氮气存储界面、船岸连接界面、管汇界面、甲板管线界面、液舱界面、压缩机室界面和高负载系统界面等8个界面,建立液舱液位、温度、压力模型,岸泵和高负载压缩机模型,回气模型和管路压力模型等7个数学模型。最终实现对装货前准备过程、冷却装货管线、装货过程以及氮气扫线过程的仿真。系统具备4种档位的实时和超实时仿真功能。程序运行结果表明,该系统基本实现装货过程的动态仿真,同时改进了原LNG-M型模拟器中存在的高负载压缩机启动异常问题。该系统可承担初步的船员和岸上操作人员的培训工作,对进一步开发LNG液货装卸模拟器具有一定的参考价值。
[Abstract]:With the depletion of oil resources, global warming is increasing. LNG (liquefied natural gas), as an internationally recognized clean energy source, has become the best substitute for fossil fuels. The target of our country is that the proportion of non-fossil energy in primary energy consumption reaches 11.4.The natural gas, as the most widely used non-fossil energy, will play a more and more important role. Our country will need about 100 LNG ships to carry out LNG transportation, and need to train a large number of LNG crew and shore workers. However, at present, the LNG liquid cargo handling simulator in our country has not formed products, so, It is of great significance to develop a LNG liquid cargo handling simulator with independent intellectual property rights to meet the training needs of China's LNG, which is in line with the development plan of building a powerful marine country. Based on the research and development experience of LNG-M type liquid cargo handling simulator produced by Norway KONGSBERG Company, and referring to the relevant equipment and ship parameters of Dapenghao LNG ship built in China, a simulation system for loading and unloading process of LNG ship liquid cargo handling simulator is developed in this paper. Taking Visual Basic6.0 as the development environment, 8 interfaces such as general catalogue interface, shore tank and nitrogen storage interface, ship shore interface, pipe interface, deck pipeline interface, tank interface, compressor chamber interface and high load system interface are designed. Seven mathematical models, such as liquid level, temperature, pressure model, onshore pump and high load compressor model, return gas model and pipeline pressure model, are established. Simulation of loading process and nitrogen sweep process. The system has four kinds of real-time and super-real-time simulation functions. The program results show that the system basically realizes the dynamic simulation of loading process. At the same time, the problem of abnormal start of high load compressor in the original LNG-M simulator is improved. The system can take on the preliminary training work of crew and shore operator, and has certain reference value for further development of LNG liquid cargo loading and unloading simulator.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：U693

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