热轧板带钢超快冷供水系统压力控制技术与应用

在热连轧线超快冷供水系统中有4个旁通管路，为了提高水压控制的精度，设计了水压串联和并联控制方法，通过对比分析得到了一种适用于超快冷供水压力的控制方法；在控制系统的设计中针对旁通阀门故障时如何保证压力的稳定性进行了研究.理论分析与实际应用效果表明，当设定压力值为035MPa时，两种控制方法均能将水压控制在理想的范围内；当设定压力为085MPa时采用并联控制方法的实际应用效果良好，并联控制方法在降低旁通阀开口度减小过程中水流对调节阀蝶片冲击和水锤现象方面效果明显.

Water Pressure Control Technology and Application on Hot Strip Rolling Water Supply System

Four by pass pipes were installed with the regulatory valves on each pipe in the ultra fast cooling(UFC)supply system of the hot strip rolling process. The series and parallel water pressure control methods were designed in order to improve water pressure control precision. A suitable control method that was used in UFC water pressure control was obtained by the comparison analysis. A research on the water pressure stability when the by pass valve broken down had been done in the design of the control system. The theoretical analysis and practical application results indicated that both the series and parallel control methods manage the water pressure within the ideal range when the set water pressure is 035MPa.When the set water pressure is 085MPa， the effect of the practical application of the parallel control method is good， because the parallel control method has significant effects on decreasing of the water flow impact on the plates of regulatory valves during the reduce procedure of the open degree and the water hammer phenomenon is also avoided.