plc200在電廠小型鍋爐控制系統(tǒng)中的應(yīng)用

論文編號(hào):ZD1373  論文字?jǐn)?shù):16277,頁(yè)數(shù):38

論文題目： PLC200在電廠小型鍋爐控制系統(tǒng)中的應(yīng)用
摘　要
 燃煤輸送是鍋爐運(yùn)行的一個(gè)重要環(huán)節(jié)，如何保證設(shè)備運(yùn)行的可靠性、減少操作人員與維護(hù)人員勞動(dòng)強(qiáng)度、提高經(jīng)濟(jì)效益，成為一個(gè)值得研究的課題. 可編程控制器（PLC）是近年來(lái)發(fā)展極為迅速，應(yīng)用面極廣，以微處理器為核心，集微機(jī)技術(shù)、自動(dòng)化技術(shù)、通信技術(shù)于一體的通用工業(yè)控制裝置。它具有功能齊全、使用方便、維護(hù)容易、通用性強(qiáng)、可靠性高、性能價(jià)格比高等優(yōu)點(diǎn)，已在工業(yè)控制的各個(gè)領(lǐng)域得到了極為廣泛的應(yīng)用，成為實(shí)現(xiàn)工業(yè)自動(dòng)化的一種強(qiáng)有力工具。
 本文基于西門(mén)子的S7-200 PLC，設(shè)計(jì)了某鍋爐供暖輸煤控制電氣系統(tǒng)。各機(jī)械之間均設(shè)計(jì)安全的聯(lián)鎖保護(hù)控制功能：系統(tǒng)中的輸煤電機(jī)啟停是有嚴(yán)格控制順序的，彼此間有相應(yīng)的聯(lián)鎖互動(dòng)關(guān)系，當(dāng)啟動(dòng)某臺(tái)輸煤設(shè)備時(shí)，從該設(shè)備下面流程的最終輸煤設(shè)備開(kāi)始向上逐級(jí)啟動(dòng)，最后才能使該臺(tái)設(shè)備啟動(dòng)；當(dāng)停止某臺(tái)輸煤設(shè)備或某臺(tái)設(shè)備故障時(shí)，從該設(shè)備上面流程的源頭給煤設(shè)備開(kāi)始向下逐級(jí)停車，最后才能使該臺(tái)設(shè)備停止。這樣，就保證了上煤傳輸?shù)恼�常運(yùn)行在線控制煤流量，避免了皮帶上煤的堆積，也保護(hù)了皮帶。PLC控制系統(tǒng)硬件設(shè)計(jì)布局合理，工作可靠，操作、維護(hù)方便，工作良好。用 PLC輸煤程控系統(tǒng)，不但實(shí)現(xiàn)了設(shè)備運(yùn)行的自動(dòng)化管理和監(jiān)控，提高了系統(tǒng)的可靠性和安全性，而且改善了工作環(huán)境，提高了企業(yè)經(jīng)濟(jì)效益和工作效率。因此PLC電氣控制系統(tǒng)具有一定的工程應(yīng)用和推廣價(jià)值。

 關(guān)鍵字： PLC電氣控制系統(tǒng)；
 論文類型:應(yīng)用研究
  
 Abstract
 on-line control of coal flow is an important link. And It becomes a deserve research of topic. that how to guarantee the credibility of equipments operation , reduce the operational  person and improve the economic performance, Programmable Logic Controller(PLC) is a kind of universal industrial control apparatus which is developed rapidly and used widely in recent years, taking microprocessor as its core , integrating microcomputer technology ,automation technology and communication technology. It is applied very diffusely in varied field of industrial control with the characteristics such as all-around functions. Flexible application, well reliability, high ratio of capability and price and maintenance and so on, having become a robust tool to realize automation.
 This paper takes SIEMENS S7-200 PLC as designing the some large boiler provide warm losing the coal control electricity system.The system can work reliably with property of easy operation and maintenance. The safety locks protection control function:In the system of losing the coal electrical engineering  have the strict control in moving and stopping, each other has the homologous  lock interaction relation, being start some set to lose the coal equipments, from that equipments below process of end lose the coal equipments start heading up pursue class start, then can make finally that set equipments start;When the stop some set loses the coal equipments or some set equipmentses to break down, from that equipments up the source head of the process starts get down for the coal equipments to pursue the class to park the car, then can make that set equipments stop finally.Thus, guaranteed the normal movement that last coal deliver, avoid the leather belt up the pile up of coal, also protected the leather belt. Lose the coal distance to control the system with the PLC, not only carried out the automation management that equipments circulate and supervision, raise the credibility and safeties of the system, but also improved the work environment, raise the business enterprise economic performance and work efficiencies. therefore the system bears certain practical applying significance and popularizing value .
   
 Key words: PLC Electrical Control System；

目  錄
1 緒論 1
1.1 綜述 1
 1.2 可編程控制器技術(shù)的發(fā)展 2
1.3 課題背景 3
1.4 設(shè)計(jì)的主要內(nèi)容 4
2 鍋爐的控制原理與系統(tǒng)設(shè)計(jì)框架 5
3.1 鍋爐系統(tǒng)的概況 5
 2.2 輸煤設(shè)備的工藝簡(jiǎn)介 7
 2.3 輸煤系統(tǒng)的控制原理 8
3 PLC200可編程控制器 10
3.1 PLC200的概述 10
 3.2PLC的基本組成 10
3.3 PLC的主要特點(diǎn) 11
 3.4本設(shè)計(jì)PLC的選型及其特性介紹 12
4 系統(tǒng)硬件的設(shè)計(jì) 17
4.1 鍋爐控制系統(tǒng)的硬件設(shè)備 17
4.2 鍋爐控制系統(tǒng)硬件設(shè)備的控制方式 21
5 系統(tǒng)調(diào)試 30
5.1 硬件調(diào)試 30
 5.2 整體調(diào)試 30
5.3 調(diào)試結(jié)果 31
 5.4 調(diào)試中遇到的問(wèn)題及解決方法 31
6 結(jié)論與展望 32
致    謝 33
參考文獻(xiàn) 34