连铸二冷水过程控制系统

Process Control System of CCM Secondary Cooling Water

介绍了天津钢铁集团有限公司炼钢厂4#板坯连铸机二次冷却水控制系统的总体结构,说明了二冷水控制的复杂性和重要性,比较了L1设定表(SPEEDTAB)控制和L2动态配水模型(DYNACS)控制方式的作用效果,并对两种控制方式进行了深入的分析和研究。为了实现工艺对连铸二冷水流量的控制,仅用基础自动化层的设定表设定值控制不能满足要求,需要用二冷水控制模型对不同工艺要求的各区域水流量进行设定,通过L2的模型计算配水量的设定值,并将设定值下传到L1中,由L1执行。使用二冷水过程控制系统更好的实现二冷水量的合理分配和控制,从而最终实现提高板坯质量的目的。

The author introduces the general structure of secondary cooling water control system at Slab Caster 4, Steel-making Plant, Tianjin Iron and Steel Group Company Limited, explains the complexity and importance of secondary water control, compares the function effect of L1 setting table （SPEEDTAB） control and L2 dynamic water distribution model （DYNACS） control and conducts deep analysis and study on the above-mentioned control modes. To achieve process control on secondary water now rate, only SPEEDTAB setting value control at basic automation level can not meet the requirement. DYNACS is further needed to set water flow rates in each area depending on process demand. The set values calculated by L2 model are transmitted to L1, which executes. The process control system of secondary cooling water better realizes the reasonable distribution and control of water flow and eventually achieves the purpose of improving slab quality.