35th循环流化床锅炉燃烧子系统集散控制设计与实现.doc

摘 要 随着人们对能源需求量的日益扩大以及对环境质量要求的不断提高，作为近年来国际上发展起来的新一代高效、低污染的清洁燃烧锅炉，循环流化床锅炉得到了迅速的推广。由于循环流化床锅炉燃烧系统是一个大滞后、强耦合的非线性系统各个变量之间相互影响，而这就需要通过集散控制系统（DCS）来完成对循环流化床锅炉系统的自动控制。本课题控制系统选用ABB公司的AC800F控制器及相关卡件为硬件结构，运用Control Build F软件对循环流化床锅炉电机的起停连锁控制故障报警锅炉出口烟气含氧量锅炉床温等主要控制点及其它辅助控制点实现集散控制。该项目的成功实施为企业带来明显的经济效益和社会效益，有着巨大的现实意义。 关键词： 循环流化床锅炉；集散控制系统；AC800F；Control Build F ABSTRACT As people growing demand for energy as well as continuously improve the environmental quality requirements, circulating fluidized bed boiler which is the new generation of high efficient and low pollution has make a rapid promotion in recent years. The circulating fluidized bed boiler combustion system is a large time delay and strong coupling of the nonlinear system which is the interaction between the variable parameters. As a result It is necessary to complete the automatic circulating fluidized bed boiler system control by distributed control system (DCS). The subject selected ABBs control system of AC800F and some cards of it as the hardware. Meanwhile we use software of Control Build F to achieve distributed control for irculating fluidized bed boiler motor starting, stopping and chain control, fault alarm, the boiler exit flue gas oxygen content, the boiler bed temperature and other major control points and other auxiliary control point. The successful implementation of the project has brought significant economic benefits for the business and social benefits, and it has great practical significance. Key words：circulating fluidized bed boiler ；distribute control system；AC800F； Control Build F 目 录 摘 要 I ABSTRACT II 1 前言 1 1.1 循环流化床锅炉简介 1 1.2 DCS简介 1 1.3 国内外研究现状 2 1.4 选题的目的及意义 2 2.系统设计方案 4 2.1 生产工艺 4 2.2 设计内容 5 2.3 控制方案及主要研究手段 5 2.4 控制要求及主要控制要点 6 2.4.1 DCS监视部分 6 2.4.2 DCS操作部分 6 3.系统硬件设计 10 3.1 检测原理 10 3.2 DCS硬件设计 11 3.2.1 DCS系统选型 11 3.2.2输入/输出点的确定 13 3.2.3 DCS柜箱面设计 14 3.2.4二次端子与卡件接线设计 15 3.3电动机控制设计 16 4.系统的软件设计 18 4.1系统组态设计 18 4.1.1项目树的建立 18 4.1.2硬件组态设计 19 4.2过程站控制程序设计 25 4.2.1电机控制程序设计 26 4.2.2模拟量转换程序设