连铸机结晶器的液位自动控制

Automatic Control of Liquid Level in Mould of CCM

济钢第三炼钢厂采用以Co60为放射源的同位素式钢水液面计 ,由接受装置、计算机处理系统、塞棒液压缸控制系统传感器及控流机构组成液位检测控制系统 ,根据射线强度的变化检测控制钢水液面高度。同时指出 ,塞棒头和上水口要选用质量好的耐材以及系统的校正和安全等系统应用中应注意的问题。生产中结晶器液位自动控制与手动控制相比 ,提高了连铸机的作业率 ,结晶器液位波动由± 5 %降为± 3 %。

Isotope liquid steel level gauge used of Co60 radioactive resource is used in No.3 steel-making plant of Jigang. This level examining and measuring system is consisted of receiver device, computer treatment system, stopper hydraulic cylinder control system and transmitter, and it is to examine and control liquid steel level based on the change of radiation intensity. At the same time,some problems included selecting excellent refractory material for making stopper and upper nozzle,system correction and safety,etc,which must be to have special attantion in application,have pointed out.Comparing the automatic control of liquid level in mould with hand control, the operating rate of CCM can be increased and the liquid level wave is decreased from ±5% to ±3%.