日照1580mm热连轧机层流冷却控制系统

来源期刊：冶金自动化2009年第2期

论文作者：宋勇 苏岚 荆丰伟

文章页码：24 - 27

关键词：热轧带钢； 层流冷却； 卷取温度控制； 有限差分温度模型

Key words：hot strip； laminar cooling； coiling temperature control； finite difference temperature method

摘    要：日照1580 mm热连轧机层流冷却控制系统分为过程自动化和基础自动化两级。过程自动化计算阀门开启数目及位置设定值,并根据测量的卷取温度不断修正模型精度,其功能模块包括有限差分温度模型、预设定、带钢段跟踪、测量值处理、动态设定、模型自适应等。基础自动化根据过程自动化的设定值开启或关闭阀门,同时实时收集各测量值并上传给过程自动化,其功能模块包括带钢头尾跟踪、阀门开闭延时处理、测量值收集等。自系统投入运行以来,工作稳定,带钢全长卷取温度控制误差为±18℃的命中率可达96.43%。

Abstract: Laminar cooling control system for 1580 mm hot strip mill in Rizhao Iron & Steel Co.consists of process automation and basic automation.Process automation calculates amount and position of opening valves,and corrects model precision continually according to measuring value of coiling temperature.Function module of process automation includes finite difference temperature model,pre-setup,segment tracking,measuring value processing,dynamic setup and model self-adaption etc.Basic automation executes open or close of valves according to setpoint from process automation,gathers and sends measuring values to process automation.Function module of basic automation includes head and tail tracking,valve delay of open and close,and measuring value collection etc.Since the system was put into operation,working was stable,hitting rate of strip whole length cooling temperature was 96.43% when temperature error was within ±18℃.