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1、 第 I 页摘 要随着自动化技术获得了惊人的成就,其逐渐在工业生产和科学发展中起着关键的作用。生产过程自动化的程度已成为衡量工业企业现代化水平的一个重要标志。本论文以两高炉供风系统的拨风装置及其自动控制系统研究与开发为论文选题。设置拨风系统的目的是:一台风机出现故障断风情况时，利用拨风系统将正在向其它高炉供风的风机的供风量调拨一部分供给故障停风的高炉，以保证该故障风机所供风的高炉不致灌渣，而维持该高炉的极限生产。本文首先在前言部分介绍了设计的内容、要求，设计的总体思想及设计的效果；随后对拨风系统的概况、工艺流程进行了概述；在此基础上详细介绍了拨风自动控制系统的控制方案以及PLC在拨风控制系统中
2、的应用，包括了检测控制原理和流程图、控制系统介绍、原理综述以及硬件的选型；阐述了PLC在工业领域的应用情况，介绍了西门子PLC S7200的相关知识，给出了PLC的硬件组态和软件编程，对控制系统的运行进行了监控并给出了监控界面。设计基本能过达到工业生产的要求，达到了本次毕业设计的目的。关键词关键词：高炉；PLC；拨风控制系统第 II 页AbstractAcquired the astonishing achievement along with the automation technique, it gradually plays a key function in the industry
3、 and development of science. The automation of production line has become an important marking of the modernization level to measure the industry business enterprise.The present paper dials the wind installment and the automatic control system research and the development take two blast furnaces for
4、 the wind system as the paper selected topic. The establishment dials the wind systems goal is; An air blower appears when the breakdown breaks the wind situation, the use dials the wind system to other blast furnaces for the wind air blower for the amount of wind to instigate a part of supplies bre
5、akdown blasting the blast furnace, guaranteed that this breakdown air blower supplies the wind the blast furnace not to send fills the dregs, but maintains this blast furnaces limit production.This article first introduced the design content, the request in the foreword part, the design overall thou
6、ght and the design effect; Afterward to dialed the wind systems survey, the technical process to carry on the outline; Based on this introduced in detail dials the wind automatic control systems control plan as well as PLC in dials in the wind control systems application, has included the examinatio
7、n control principle and the flow chart, the control system introduction, the principle summary as well as hardwares shaping; Elaborated PLC in industrial fields application situation, introduced the Simens PLC S7-200 related knowledge, has given the PLC hardware configuration and the software progra
8、mming, carried on to control systems movement has monitored and has given the monitoring contact surface. Designs basically can achieve the industrial production the request, has served this graduation project purpose.KEYWORDS:KEYWORDS: BLAST FURNACE; PLC ; AIR INTAKE CONTROL SYSTEM第 I 页目录0 引言.11 绪论
9、.31.1 高炉炼铁工艺简介 .31.2 高炉供风系统的概述 .41.3 本论文选题的背景及意义 .51.4 本论文完成的主要工作 .62 拨风控制装置及拨风系统的设计.72.1 拨风装置的原理设计 .72.2 拨风系统的设计 .92.3 拨风装置计算机控制逻辑条件的确定及检测点分布 .102.4 拨风装置计算机控制逻辑的设计 .122.5 拨风管道与阀门的设计选择 .133 拨风控制系统硬件组成.163.1 可编程控制器概述.163.1.1 PLC 的特点 .163.1.2 PLC 的一般结构 .183.1.3 PLC 的工作原理及 PLC 的工作方式.203.1.4 S7 -200 系列 PLC 简介.213.1.5 西门子 S7-200 的 CPU224 型 PLC.223.2 PLC 的选型.233.2.1 PLC 性能指标 .233.2.2 需要控制的输入输出量(I/O)分析配置.253.2.3 PLC 的选型 .253.3 应用力控组态软件制作拨风控制画面.253.3.1 工程简介.25第 II 页3.3.2 定义 I/O 设备 .263.3.3 创建实时数据库.283.3.4 制作动画连接.303.4 设备选型及系统背面接线图.
