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在转炉汽化冷却系统中,控制的核心是汽包水位的控制。对目前国内、外汽包水位控制的单冲量、双冲量、三冲量3种控制方法进行了介绍,分析了这些控制方式不能满足转炉汽包水位控制的原因:转炉生产的间隙性使转炉烟道温度变化很大,汽包内的压力变化较大,会引起虚假液位的产生。针对转炉生产的特点,提出了采用模糊控制算法实现对汽包液位的控制。将汽包的液位偏差和偏差的变化率进行模糊化计算,将模糊化计算的结果,作为汽包补水流量调节系统的输入。流量调节系统,也采用闭环控制。所阐述的理论控制算法,应用于梅钢炼钢3#转炉汽化冷却系统。该控制系统投入运行后,转炉汽化冷却系统运行状态良好,表明转炉汽化冷却控制系统中推广的可行性。
In the converter vaporization cooling system, the control of the core is the drum water level control. The three control methods of single impulse, double impulse and three impulse of domestic and overseas drum water level control are introduced. The reasons why these control modes can not meet the requirements of converter drum water level control are analyzed. The gap of converter production makes converter flue Large temperature changes, large changes in the pressure inside the drum will cause false liquid level. According to the characteristics of converter production, the fuzzy control algorithm is proposed to control the level of drum. The level error of the drum and the variation rate of deviation are fuzzified, and the result of fuzzy calculation is used as the input of the steam drum flow regulation system. Flow control system, also used closed-loop control. The theory of the control algorithm is described, used in Mei Steel Steel 3 # converter gasification cooling system. The control system put into operation, the converter gasification cooling system running well, indicating the feasibility of promoting the converter cooling control system.