【正文】 。它具有功能齊全、使用方便、維護(hù)容易、通用性強、可靠性 高、性能價格比高等優(yōu)點，已在工業(yè)控制的各個領(lǐng)域得到了極為廣泛的應(yīng)用，成為實現(xiàn)工業(yè)自動化的一種強有力工具，并以工業(yè)電視為輔助手段對現(xiàn)場設(shè)備的運行狀態(tài)進(jìn)行視頻監(jiān)控、替代傳統(tǒng)的現(xiàn)場巡檢，確保了輸煤系統(tǒng)安全、可靠、高效和經(jīng)濟(jì)的生產(chǎn)運行。s developed a new type of electrical control devices, which brought about the birth of the industrial control over a revolutionary. It will relay the traditional control technology and puter control technology together with a flexible generalpurpose, high reliability and strong antiinterference ability, programming is simple, easytouse, powerful and easy to implement, such as mechanical and electrical integration of significant advantages, has been widely used in a variety of automatic control of industrial production process. Coal power plant electricity production system is very important to the process of the external auxiliary system, coal conveying control system with control equipment and more plex processes, equipment and other features distributed along environmental conditions, dust, humidity, vibration, noise, electromagic interference are more serious, traditional way of strong centralized control of power can not meet the largescale coal power plant automation system, PLC controlled manner because of its advantages in largescale coal power plant systems have gradually replaced conventional strong centralized control of power the way to bee largescale coal thermal power plant control system. Coalfired boiler transmission is an important part, how to ensure the reliability of equipment and reduce operator and maintenance personnel working strength, enhance economic efficiency, as a subject worthy of study. Programmable Logic Controller (PLC) is very fast in recent years, with wide application to the microprocessor as the core, set puter technology, automation technology, munication technology in one of the mon industrial control devices. It has a fullfeatured, easy to use, easy maintenance, high universality, high reliability and high cost performance has been in various areas of industrial control has been a wide range of applications, industrial automation has bee a powerful tool and television industry as a means of supporting the operation of equipment onsite video surveillance state, to replace the traditional onsite inspection to ensure that the coal handling system is safe, reliable, efficient and economic operation of the production. Key words Power Plant, Real,Supplying Coal Control, Programmable Logic Controller . 基于 組態(tài)軟件和 PLC 的火電廠給煤控制系統(tǒng)設(shè)計 III 目 錄 摘 要 .............................................................................................................................. I Abstract .......................................................................................................................... II 1 引 言 ......................................................................................................................... 1 火電廠輸煤系統(tǒng) ................................................................................................. 1 輸煤程控簡介 ..................................................................................................... 1 輸煤程控系統(tǒng)控制方式及其功能特點 ............................................................. 3 輸煤控制系統(tǒng)概況及工藝要求 ......................................................................... 4 輸煤順序控制系統(tǒng)國內(nèi)外發(fā)展趨勢 ................................................................. 4 本次設(shè)計的主要目的 ......................................................................................... 5 2 可編程控制器簡介 ................................................................................................... 6 可編程控制器的定義 ......................................................................................... 6 PLC 的特點 .......................................................................................................... 6 PLC 的應(yīng)用領(lǐng)域 .................................................................................................. 6 PLC 的工作模式 .................................................................................................. 7 PLC 的工作原理 .................................................................................................. 7 葉輪給煤機上位機與 PLC 通訊 ......................................................................... 8 3 葉輪給煤機系統(tǒng)監(jiān)控畫面設(shè)計 ............................................................................... 9 監(jiān)控軟件的功能及基本使用方法 ..................................................................... 9 控制系統(tǒng)硬件設(shè)計 ........................................................................................... 10 葉輪給煤機控制系統(tǒng)工況分析 ................................................................ 10 葉輪給煤機控制系統(tǒng)構(gòu)成及功能說明 .................................................... 10 監(jiān)控軟件設(shè)計 .................................................................................................... 12 監(jiān)控畫面設(shè)計與功能開發(fā) ......................................................................... 12 監(jiān)控畫面數(shù)據(jù)動態(tài)聯(lián)接 ............................................................................. 17 4 PLC 梯形圖程序設(shè)計 ......................................