目 錄

摘要 III

Abstract IV

1 緒論 1

1.1 鍋爐系統(tǒng)概述 1

1.2 鍋爐輸煤系統(tǒng) 1

2 硬件系統(tǒng)部分設(shè)計(jì) 2

2.1 可編程控制器(PLC)簡介 2

2.1.1 PLC的歷史 2

2.1.2 PLC的基本概念 2

2.1.3 PLC的基本機(jī)構(gòu) 2

2.1.4 PLC的掃描工作方式 3

2.1.5 PLC的I/O模塊 3

2.1.6 PLC的功能及特點(diǎn) 3

2.1.7 PLC的分類 5

2.1.8 PLC的通信聯(lián)網(wǎng) 5

2.2 PLC控制系統(tǒng)設(shè)計(jì)步驟及內(nèi)容 6

2.2.1分析評(píng)估及控制任務(wù) 6

2.2.2 PLC的選擇 7

2.2.3 I/O地址分配 9

2.2.4 系統(tǒng)設(shè)計(jì) 10

2.2.5 系統(tǒng)調(diào)試 10

 3  PLC輸煤控制系統(tǒng)設(shè)計(jì) 12

3.1 輸煤系統(tǒng)簡介 12

3.1.1 系統(tǒng)組成 12

3.1.2 系統(tǒng)目標(biāo) 13

3.1.3 控制對(duì)象及控制方案 13

3.1.4 系統(tǒng)設(shè)計(jì)的關(guān)鍵問題及解決方案 14

3.1.5 系統(tǒng)的I/O分配 15

    3.2 系統(tǒng)設(shè)計(jì) 16

3.2.1 系統(tǒng)啟動(dòng)部分設(shè)計(jì) 16

3.2.2 系統(tǒng)停止部分設(shè)計(jì) 18

3.2.3 系統(tǒng)位置選擇 18

4 操作界面設(shè)計(jì) 21

4.1 工業(yè)組態(tài)軟件——組態(tài)王 21

4.1.1 組態(tài)王簡介 21

4.1.2 關(guān)于組態(tài)王變量的問題 21

4.1.3 組態(tài)王的動(dòng)畫連接 24

4.1.4 本設(shè)計(jì)中組態(tài)王的界面設(shè)計(jì) 26

論文總結(jié) 27

致謝 28

參考文獻(xiàn) 29

附錄I 設(shè)計(jì)程序

附錄II 仿真結(jié)果

基于西門子PLC控制的熱電廠鍋爐輸煤系統(tǒng)

摘 要

　　　本文介紹的是用PLC來對(duì)鍋爐輸煤系統(tǒng)進(jìn)行控制。鍋爐輸煤系統(tǒng)，是指從卸煤開始，一直到將合格的煤塊送到煤倉的整個(gè)工藝過程，它包括以下幾個(gè)主要環(huán)節(jié)：卸煤生產(chǎn)線、煤場、輸煤系統(tǒng)、破碎與篩分、配煤系統(tǒng)以及一些輔助生產(chǎn)環(huán)節(jié)。本設(shè)計(jì)中主要研究的是其中的輸煤系統(tǒng)部分，即煤塊從給煤機(jī)傳輸?shù)皆簜}的過程。采用了順序控制的方法。首先，介紹了PLC的一些基本常識(shí)問題。在具體的設(shè)計(jì)中，先講述了PLC設(shè)計(jì)的一些基本方法及步驟。詳細(xì)介紹了西門子公司的型號(hào)為S7-200的PLC的一些基本知識(shí)。之后重點(diǎn)講述了PLC程序設(shè)計(jì)中的啟動(dòng)，停止，位置選擇及輸出報(bào)警等問題，也講了I/O點(diǎn)分配的一些事項(xiàng)并對(duì)本設(shè)計(jì)中的對(duì)象進(jìn)行了地址分配。在上位機(jī)的設(shè)計(jì)中，我用了工業(yè)組態(tài)軟件——組態(tài)王來進(jìn)行操作界面制作，并使之與PLC進(jìn)行通訊，使之達(dá)到遠(yuǎn)程控制的功能，中間又重點(diǎn)講述了制作操作界面的步驟及方法。

關(guān)鍵詞:   輸煤系統(tǒng),PLC，I/O,組態(tài)王

based on Siemens PLC control system of thermal 

 power plant boiler coal

 Abstract

  

   This paper design for the boiler which is beaten the coal measures together with PLC . The transportation system of coal in boiler is that beginning with unload coal from car, and until to warehouse. The system includes several chief segments: coal does unload manufacture part, coal warehouse, transportation system of coal, fragmentation coal, sift through and other supplementary system. The transportation system of coal is the chief part of this design. In other words is that a course from the machine of supply coal to the warehouse of coal.

　　We chose the method of sequential control in the system. First, the paper tells us some fundamental general knowledge problems of PLC and the fundamental means and step in this design. The type detailed to introduce some fundamental in formations of the PLC of S7-200 of the siemens corporation. Then  we can know some problem about PLC programming 's  start, stop and output alarm, and  also say that I/O touches some matters distributing has been underway the address assignment allocation to the target in native design . In ordinate engine design , I use the industry configuration , and software - configuration monarch comes to manipulate interface manufacturing , and cause it carry on the news dispatch against PLC , causing it attain the remote control meritorious service capacity , move and means manufacturing the operation interface are stress give an account of once more to the middle .

Keywords: the system of transport coal in boiler, PLC, I/O, Kingviews