基于PLC的电厂除灰系统设计

论文编号:ZD900    论文字数:9665,页数:45

 摘   要

 本文介绍了湖南长沙火力发电厂1号机组除灰系统的工作流程和控制要求，仓泵气力输送技术的应用，进一步促进了国内电厂粉煤灰气力输送技术的发展并且气力输送系统的输送距离、输送浓度、系统出力和设备的制造工艺及自动化水平得到加强和提高。发电厂控制系统采用OMRON可编程序控制器在仓泵的输灰控制系统中的应用，实现了对仓泵的进料，进气，排气，出料等过程的计算机控制,组态软件IFIX实现对现场的监控.运行人员只需监视控制系统运行显示状态。同时由于设有完善的故障报警系统。
 
关键词: 气力输送，OMRON PLC  IFIX

Abstract
 This article Introductice  Workflow and control requirements and Pneumatic conveying pump warehouse technology  of Coal-fired power plants Unit 1 Ash Removal System of hu nan chang sha . Further promote the Domestic power plant fly ash pneumatic conveying technology and pneumatic conveying system, transmission distance, transmission levels, the system output and equipment and the automation of manufacturing processes to be strengthened and enhanced. OMRON power plant control system uses a programmable logic controller and pump Ash warehouse control system to achieve the position of the feed pump, intake, exhaust, a material such as computer-controlled process Configuration software IFIX to achieve on-site monitoring. Operating personnel to monitor the control system can display the status. At the same time, with a sound alarm system failure

Keywords: Pneumatic Conveying  OMRON PLC  IFIX

目 录

摘 要………………………………………………………………….….…………….………...I
Abstract……………………………………………………………………………….…… …Ⅱ
目 录………………………………………………………………………….... ……. …….......Ⅲ
1 绪论…….…….…….……..…….…….………….…….…….…….….…….……. …….…….1
2多泵制正压浓相气力除灰系统............................................ .2
 2.1气力输送系统的分类...................................................2
 2.2多泵制正压浓相气力输灰的构想来源.....................................2
 2.3多泵制正压浓相气力输灰的结构及工作原理...............................3
 2.4多泵制正压浓相气力输灰工艺流程.......................................4
 2.5多泵制正压浓相气力除灰系统电气示意图.................................5
3 PLC控制发电厂输灰系统......................................... .........6
 3.1  PLC的简介 .........................................................6
 3.2  PLC的选型 .........................................................6
 3.3  I/O模块选择........................................................6    

 3.4  分配I/O点..........................................................9    

3.5  系统功能表图................................................ ......10    

 3.6 梯形图使用规则......................................................12
 3.7 程序编写......................... ..................................13
4 ifix监控系统 ............................................................15
 4.1 Ifix4.0简介.........................................................15
 4.2Ifix4.0软件设计方案..................................................16
 4.3工艺流程图..........................................................16
 4.4系统操作功能........................................................18
 4.5运行参数设置........................................................19
 4.6报警记录............................................................19
 4.7报表功能......................................................... ...20
5  总结……………………………………………………… ……………………………........22
致谢…………………………………………………………….…….….….………….…....... ...23
参考文献………………………………………………………………….……................. ........25
附录 1  CX-Programmer编程指令介绍…………………………………………….…26
附录 2  毕业设计程序…………………………………………………………............ .......29