论文编号:ZD640 论文字数:16268,页数:36
摘要
在当今各种工业企业的动力设备中,锅炉仍然是一重要的组成部分。随着现代化工业的飞速发展,对能源利用率的要求越来越高,作为将一次能源转化为二次能源的重要设备之一的锅炉,其控制和管理随之要求越来越高。但在我们国家,除了一些大中型锅炉采用了先进的控制技术外,绝大多数中小企业所用的锅炉,大部分还在采用仪表/继电器控制,甚至还是人工操作,己无法满足要求。据此,本文针对于循环硫化床锅炉,提出了一套PLC加上位机的控制系统方案。对其各模拟量进行采集并进行处理.
本文以循环硫化床锅炉的PLC控制系统为背景,理论与实践相结合,详细阐述了集PLC技术,通信技术于一体的先进控制技术在循环硫化床锅炉控制系统中的应用。在该系统中,应用了Siemens公司的S7-200系列PLC,并用其编程软件Step7
Micro /WIN32
V4.0设计锅炉控制的梯形图、STL语句;
关键词: 循环硫化床锅炉 PLC Step7 Micro /WIN32 V4.0
A design of combustion Control System of Circulating
Fluidized Bed Boiler on the plc controled
Abstract
Nowadays the boilers are still an important
component among various power equipments in industrial
enterprises.Along with the fast
development of modern industry, high efficient energy utilization
is pursued
more and more.And the boiler
are a kind of primary
equipments for converting
raw energy into
secondary energy, so their
control and supervision is very important for
promoting energy utilization efficiency. But in advanced control
our country, only some big and medium-sized boilers have
adopted technique.
Most boilers being
used by
medium and small
enterprises, are
controlled by meter/relays, or even manually.
That can not meet demand. In this paper, a control system scheme of
PLC+IPC is proposed, which is aiming Circulating Fluidized Bed
Boiler.
An advanced
Circulating Fluidized Bed Boiler control technique
composed of PLC, and communication are detailly
described with respect to theory and application in thispaper,
which is based on combustion Control System of Circulating
Fluidized Bed Boiler on the plc controled in certain plant.The
S7-300 series PLC of Siemens Company is adopted in the boiler
control systems. The Step 7 programming software is used to design
the ladder chart, the STL language .
Key words:
Circulating Fluidized Bed Boiler ,PLC, Step7 Micro /WIN32 V4.0
目录
{dy}章 绪论 5
1.1国内外循环流化床技术的发展概况 5
1.2锅炉自动化控制概述 5
1.3课题提出的背景及意义 6
1.4本文的工作内容 6
1.5小结 6
第二章循环硫化床锅炉的控制系统 7
2.1循环流化床锅炉的原理 7
2.2循环流化床锅炉的结构 8
2.3循环流化床锅炉燃烧控制的任务 10
2.4流化床锅炉的优点 11
2.5循环流化床床温控制技术研究状况及存在的主要问题 11
第三章硫化床锅炉控制系统硬件选择及设置 12
3.1 机型的选择 12
3.1.1西门子S7-200 13
3.3编程通讯和数据通讯 14
3.3 .1 SIMATIC工业软件(STEP 7-Micro/WIN)简介 15
3. 3.2通讯口参数设置 16
3.4 24 V
DC电源(PWR) 17
3. 5模块采集 17
3.5.1输入特性 17
3.5.2
EM235端子连线 17
3.5.3
EM235的校准和配置 19
第四章软件的设置 20
4.1模拟量处理 20
4.2燃烧室的控制 22
4.3系统的初始化 23
4.4子程序调用 25
4.5中断程序 26
4.6 有关各系统的控制 26
4.7故障处理 27
第五章 结论与展望 32
5. 1结论 32
5. 2展望 32
参考文献 33
致谢 35
以上为本篇论文部分内容,有需要完整论文的网友可参阅也可直接通过QQ:136775125联系.更多相关论文请点击进入查看.