船舶油改气安全控制系统的硬件设计与研制

发布时间：2018-02-27 05:32

本文关键词： LNG/柴油双燃料船舶油改气 PLC 安全控制硬件设计　出处：《华中科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着石油资源的日益枯竭和生态环境的急剧恶化,人类越来越清醒地意识到能源结构调整和环境保护的重要性,随着天然气资源开发的加快,我国的天然气液化也进入了一个新的阶段。通过船舶油改气技术,将传统使用柴油作为单一燃料的船舶改造为柴油和LNG(液化天然气)作为混合动力燃料的船舶以其经济、绿色环保、低排放的优势正日益受到社会和航运市场的重视。但不容忽视的是,社会上对其安全性的顾虑也十分强烈,能否正确认识和解决存在的安全问题,对船舶油改气的推广起到了决定性的作用。可编程控制器PLC(Programmable Logic Controller)以其稳定性及抗干扰性相对于计算机控制系统有较为明显的优势,在工业控制领域得到了广泛的应用。本课题基于PLC所设计的安全控制系统可以实现对油改气后的船舶现场环境的数据采集,安全监控并对火灾报警,燃气泄露等情况发生时采取相应控制策略,保障船用LNG/柴油双燃料动力模块的安全运行,具有较高的工程实用价值。本文首先阐述了课题研究背景和意义,总结了课题研究现状。然后对课题研究的安全控制系统进行总体方案设计并对所用的PLC技术进行简介。在后面两章重点对安全控制系统的硬件设计和系统的研制、调试做了详尽介绍。最后对全文进行了总结,并对设计中所存在的不足提出了展望。
[Abstract]:With the increasingly depletion of petroleum resources and the rapid deterioration of ecological environment, human beings are becoming more and more conscious of the importance of energy structure adjustment and environmental protection, and with the rapid development of natural gas resources, The natural gas liquefaction of our country has also entered a new stage. By means of the technology of changing ship oil into gas, the traditional ships that use diesel oil as a single fuel are transformed into diesel oil and LNG (liquefied natural gas) as hybrid fuel. The advantages of green environment and low emission are being paid more and more attention by the society and shipping market. However, it can not be ignored that the social concerns about their safety are also very strong. Can we correctly understand and solve the existing safety problems? It plays a decisive role in popularizing ship oil and gas. PLC(Programmable Logic Controller has obvious advantages over computer control system in terms of its stability and anti-interference. It is widely used in the field of industrial control. The safety control system based on PLC can realize the data collection, safety monitoring and fire alarm of the oil modified gas environment. When the gas leak occurs, the corresponding control strategy is adopted to ensure the safe operation of the LNG / diesel dual-fuel power module, which has high engineering practical value. Firstly, this paper describes the background and significance of the subject research. This paper summarizes the status quo of the research. Then, the overall scheme of the security control system is designed and the PLC technology is introduced. In the last two chapters, the hardware design and system development of the security control system are emphasized. The debugging is introduced in detail. Finally, the paper summarizes the full text and puts forward the prospect of the shortcomings in the design.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U665.2;TP273

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