蓄熱式步進加熱爐電氣控制系統設計畢業論文(已修改)

　

【正文】 共 Ⅳ 頁 第 I 頁蓄熱式步進加熱爐電氣控制系統設計畢業論文目 錄摘 要 ....................................................................................................................................IABSTRACT .........................................................................................................................II目 錄 .................................................................................................................................III第 1 章 緒論 ..........................................................................................................................1 研究背景 ......................................................................................................................1 國內外研究現狀 ..........................................................................................................1 步進式爐的現狀 ................................................................................................................................1 蓄熱式爐的現狀 ................................................................................................................................2 加熱爐控制系統的概況 ..............................................................................................2 PLC 及 DCS 控制技術 ......................................................................................................................3 全數字式傳動技術的應用 ................................................................................................................3 現場總線技術的應用 ........................................................................................................................3 計算機網絡技術的應用 ....................................................................................................................3 本課題的主要研究工作 ..............................................................................................4第 2 章 加熱爐本體系統和汽化冷卻系統 ..........................................................................5 加熱爐本體系統電氣控制 ..........................................................................................5 助燃風機的控制 ................................................................................................................................5 煤氣側引風機的控制 ........................................................................................................................5 空氣側引風機的控制 ........................................................................................................................5 點火風機的控制 ................................................................................................................................5 煤氣主管電動蝶閥的控制 ................................................................................................................5 風冷管電動閥 ....................................................................................................................................6 裝鋼機的控制 ....................................................................................................................................6 出鋼機的控制 ....................................................................................................................................6 裝料爐門升降裝置的控制 ................................................................................................................6 出料爐門升降裝置的控制 ..............................................................................................................6 步進梁的控制 ..................................................................................................................................7 加熱爐本體系統儀表控制 ..........................................................................................7 蓄熱燒嘴燃燒控制 ............................................................................................................................7 爐膛溫度調節 ....................................................................................................................................8 空燃比控制調節 ................................................................................................................................8 爐膛壓力調節 ....................................................................................................................................8 汽化冷卻系統電氣控制 ..............................................................................................8 循環泵的控制 ...................................................................................................................................8 給水泵的控制 ...................................................................................................................................8 軟水泵的控制 ...................................................................................................................................8 汽化冷卻系統儀表控制 ..............................................................................................9 汽包水位調節 ...................................................................................................................................9 汽包壓力控制 ...................................................................................................................................9 除氧器水位調節 ...............................................................................................................................9共 Ⅳ 頁 第 II 頁 除氧器壓力控制 ...............................................................................................................................9 軟水箱水位調節 ...............................................................................................................................9 本章小結 ......................................................................................................................9第 3 章 電氣自動化系統總體結構 ....................................................................................10 加熱爐基礎自動化系統（L1） ...............................................................................10 主機及 PLC........................................................