基于PLC的熱電廠輸煤控制系統(tǒng)設(shè)計

電氣自動化論文編號:ZD475  論文字數(shù):16882,頁數(shù):43，有開題報告，任務(wù)書，文獻綜述

目   錄

摘  要  Ⅰ
Abstract Ⅱ
第1章 緒 論 1
1.1引言 1
1.2 PLC的最新發(fā)展現(xiàn)狀 2
 1.2.1 PLC應(yīng)用情況 2
 1.2.2 PLC主要生產(chǎn)廠家 3
 1.2.3 PLC現(xiàn)狀 3
第2章 輸煤系統(tǒng)的設(shè)計 5
2.1 概述 5
2.2輸煤控制系統(tǒng)設(shè)計 5
2.3硬件設(shè)計 7
 2.3.1電動機的選型 7
 2.3.2分配I/O點 9
 2.3.3可編程序控制器的選型 10
 2.3.4系統(tǒng)簡單工藝流程圖 11
 2.3.5各種開關(guān)及繼電器選型 11
 2.3.6外部接線圖設(shè) 12
2.4軟件設(shè)計 12
 2.4.1主電路圖設(shè)計 12
 2.4.2梯形圖及程序設(shè)計 13
 2.4.3控制面板的設(shè)計 23
2.5系統(tǒng)調(diào)試 23
第3章 熱電廠輸煤控制系統(tǒng)的抗干擾措施 25
3.1 概述 25
3.2實際分析 25
3.3抗干擾措施 26
 3.3.1硬件措施 26
 3.3.2軟件措施 27
總 結(jié) 29
致  謝 30
參考文獻 31
附錄1系統(tǒng)外部接線圖 32
附錄2上煤系統(tǒng)梯形圖及指令表 33

摘 要: 本文研究了熱電廠輸煤傳送帶控制系統(tǒng)在熱電廠輸煤控制中的應(yīng)用。通過一臺PLC對12條皮帶輸煤進行現(xiàn)場控制，使其能夠按照逆煤流啟動、順煤流停止，出現(xiàn)故障的皮帶及之前的皮帶能夠立即停止運行，同時系統(tǒng)出現(xiàn)報警信號。后面的皮帶繼續(xù)運煤到無余煤時停止，如果出現(xiàn)意外系統(tǒng)能夠緊急停止。系統(tǒng)控制分手動控制和自動控制兩種控制方式，分析了輸煤控制系統(tǒng)的合理構(gòu)成，了解影響輸煤控制系統(tǒng)安全穩(wěn)定運行的幾個重要因素；并根據(jù)實際情況運用抗干擾措施基本消除現(xiàn)場干擾信號的影響，從而保證輸煤控制系統(tǒng)的安全可靠運行。輸煤系統(tǒng)實現(xiàn)程序控制和工業(yè)電視監(jiān)視系統(tǒng)對提高輸煤系統(tǒng)的可靠性、自動化程度，減少崗位人員和他們的勞動強度，加強輸煤過程的運行管理和節(jié)能管理，實現(xiàn)狀態(tài)檢修具有非常重要的意義。

關(guān)鍵詞：輸煤控制  PLC 抗干擾  皮帶控制

The heat and power plant loses the
 Control system of a belt of coal Summary
 
 Abstract: This text studied the hot power station loses the coal delivers to take the application that control the system in hot power station lost coal control.. pass a the set PLC loses to 12 leather belts the coal proceeds the spot controls, making its can flow to start and follow according to the coal of opposite the coal flows the ceasing, appearing leather belt and previous leather belts of the breakdowns can stop the movement immediately, the system appears to report to the police the signal at the same time.Behind of the leather belt carries continuously the coal arrive to have no remaining coal stop, if appear accident system can urgent ceasing.The system control breaks up to move the control with control two kinds of controls method automatically, Analyzed to lose the reasonable composing that coal control system, understand the influence lose a few and important factor that coal control system safe stability circulate;And make use of the influence of the basic cancellation in measure in interference in anti- the spot interference signal according to the actual circumstance, from but the assurance loses the dependable movement in safety that coal control system.Losing the coal system realizes the procedure control keeps watch on the system to lose the dependable of the coal system and automate the degree to the exaltation with the industry television, reducing the post the personnel with their labor strength, enhance the movement that lose the coal process the management with economize on energy the management, realize the appearance fix to have the count for much meaning.

Key words:Lose the coal control  PLC  anti- interference leather  belt control