基于plc的蒸汽鍋爐自動(dòng)控制系統(tǒng)-wenkub
2022-11-03 10:31:38 本頁面
【正文】 器，汽包水位，蒸汽壓力，爐膛負(fù)壓1THE DESIGN OF AUTOMATIC CONTROL SYSTEM OF STEAM BOILER BASED ON PLCAbstract：The industrial boiler is an important motive equipments in the production line .The main function of steam boiler supply kinds of equipments need of qualified stream .The good and bad of its control quality influence not only its run result, but also the stability and the credibility of the related equipments directly. This paper describe the structure of the system and the work principle about industrial steam boiler adding to its function of control system .The paper importantly investigate the modularization design of hardware and software based on strong PLC, which is the core of the whole system. It concretely investigate a few dynamic states of the well controlling steam boiler in according to control loop arithmetic. Make well use of the PLC’s many soft and hardware resources, especially PID control to improve the dynamic state quality of the whole control system in order to make whole the system get a very great exaltation in stability and credibility.Key words: PLC, water position of boiler, stream pressure, heart negative pressure2目 錄1 緒論 ................................................................................................................................12 鍋爐的結(jié)構(gòu)及工作原理 ...............................................................................................13 鍋爐控制系統(tǒng)框圖 .......................................................................................................24 控制系統(tǒng)的硬件設(shè)計(jì) ...................................................................................................2 PLC 機(jī)型的選擇 ........................................................................................................2 輸入輸出模塊的選擇 ...............................................................................................3 傳感器或變送器的選擇 ...........................................................................................3 溫度變送器的選擇 ...................................................................................................4 壓力傳感器的選擇 ...................................................................................................5 流量變送器的選擇 ...................................................................................................5 水位傳感器的選擇 ...................................................................................................6 變頻器的選擇 ............................................................................................................75 控制系統(tǒng)軟件設(shè)計(jì) .......................................................................................................7 控制系統(tǒng)的軟件流程圖 ...........................................................................................7 I/O 口分配 ..................................................................................................................8 PLC 的電氣接線圖 ....................................................................................................8 鍋爐控制過程設(shè)計(jì) ...................................................................................................8 PID 的選擇及其控制規(guī)律 .....................................................................................8 PID 參數(shù)的整定 .....................................................................................................8 鍋爐給水過程控制 ..............................................................................................11 鍋爐燃燒過程控制 ......................
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