毕业论文：船舶细水雾灭火系统.doc

第1章细水雾的灭火机理及其特性分析 3
3
3
3
3
第2章可编程控制器和W i nCC简介 7
2. 1可编程控制器(PLG)的基础知识 7
7
8
2. 2 S7-200 PLC的组成 11
2. 2. 1 S7-200 PLC的硬件结构 11
2. 2. 2 S7-200 PLC的寻址方式和安装原则 12
软件简介 13
第3章船舶机舱细水雾灭火系统控制设计 15
15
17
17
3. 2. 2系统开发环境的确定 17
3. 3控制系统程序设计与实现 19
19
3. I/O地址分配 19
19
3. 4程序优化与实际应用 21
21
结论 36
致谢 38
参考文献 39
摘要
火灾是船舶海难中较常见且危险性较大的一种事故,它不仅威胁船舶、船上人员以船舶及船上的货物等的安全,严重的还会导致人身伤亡并带来巨大的财产损失。本文对应用于船舶机舱的细水雾灭火系统的设计和如何实现自动控制进行了研宄,这对推动细水雾灭火技术在我国的发展具有很高的价值和实际应用意义。
本文通过对船舶机舱内细水雾灭火系统的功能进行研究分析,深入了解其雾化机理和灭火机理,然后结合船级社规范和我国的《水喷雾灭火系统设计规范》对现有的细水雾系统中各主要元件进行科学选型,接着搭建一台固定式细水雾灭火系统供灭火实验及使用,并采用西门子公司生产的S7-200系列PLC为本实验室研发的细水雾灭火系统设计一套功能完善、运行稳定的自动控制系统,使其具有实船应用价值。
关键词:细水雾;灭火系统;喷头;PLC
Abstract
Ship fires occur frequently and there might be dangerous disasters. Life safety property protection, cargoes on the ship, and the ship safety itself are the concerns.
Under this situation, this paper studies the design of the fire fighting system for the main engine and other protection fields in ships,and it will be very valuable and meaningful in promoting the application of technology in China At the beginning, the main function of the water mist fire-extinguishing system is researched in this thesis. Emphases are put on the overview about the extinguishing mechanisms and atomization mechanisms. Furter more, the ponents of the water mist fire-extinguishing systems are chosen according to the Code of Design for Water Spray Extinguishing Systems and a new fixed water mist fire test-bed was designed and built.
Finally, a perfect and stable control system for the water mist fire-extinguishing systems is designed by PLC which has some practical application value for ships.
Key Words: Water Mist; Fire Extinguishing System; Extinguishing Mechanism; PLC
前言
课题研究的背景和意义
课题的来源
细水雾灭火技