基于PLC的電廠除灰系統設計

電氣自動化論文編號:ZD900    論文字數:9665,頁數:45

 
目 錄

摘 要………………………………………………………………….….…………….………...I
Abstract……………………………………………………………………………….…… …Ⅱ
目 錄………………………………………………………………………….... ……. …….......Ⅲ
1 緒論…….…….…….……..…….…….………….…….…….…….….…….……. …….…….1
2多泵制正壓濃相氣力除灰系統............................................ .2
 2.1氣力輸送系統的分類...................................................2
 2.2多泵制正壓濃相氣力輸灰的構想來源.....................................2
 2.3多泵制正壓濃相氣力輸灰的結構及工作原理...............................3
 2.4多泵制正壓濃相氣力輸灰工藝流程.......................................4
 2.5多泵制正壓濃相氣力除灰系統電氣示意圖.................................5
3 PLC控制發電廠輸灰系統......................................... .........6
 3.1  PLC的簡介 .........................................................6
 3.2  PLC的選型 .........................................................6
 3.3  I/O模塊選擇........................................................6    

 3.4  分配I/O點..........................................................9    

3.5  系統功能表圖................................................ ......10    

 3.6 梯形圖使用規則......................................................12
 3.7 程序編寫......................... ..................................13
4 ifix監控系統 ............................................................15
 4.1 Ifix4.0簡介.........................................................15
 4.2Ifix4.0軟件設計方案..................................................16
 4.3工藝流程圖..........................................................16
 4.4系統操作功能........................................................18
 4.5運行參數設置........................................................19
 4.6報警記錄............................................................19
 4.7報表功能......................................................... ...20
5  總結……………………………………………………… ……………………………........22
致謝…………………………………………………………….…….….….………….…....... ...23
參考文獻………………………………………………………………….……................. ........25
附錄 1  CX-Programmer編程指令介紹…………………………………………….…26
附錄 2  畢業設計程序…………………………………………………………............ .......29

摘   要

 本文介紹了湖南長沙火力發電廠1號機組除灰系統的工作流程和控制要求，倉泵氣力輸送技術的應用，進一步促進了國內電廠粉煤灰氣力輸送技術的發展并且氣力輸送系統的輸送距離、輸送濃度、系統出力和設備的制造工藝及自動化水平得到加強和提高。發電廠控制系統采用OMRON可編程序控制器在倉泵的輸灰控制系統中的應用，實現了對倉泵的進料，進氣，排氣，出料等過程的計算機控制,組態軟件IFIX實現對現場的監控.運行人員只需監視控制系統運行顯示狀態。同時由于設有完善的故障報警系統。
 
關鍵詞: 氣力輸送，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