MLC-V235 Continuous Casting Mold Level Control System

4 现场操作显示控制面板；

5数字执行器；

系统控制原理

系统可设定自动、半自动、手动、电动离合四种控制方式。自动方式为钢水液位闭环控制系统，由数字执行机构控制塞棒的开度；半自动方式采用开度设定器和数字执行机构，手动设定塞棒的开度；手动方式为直接开闭按钮控制塞棒的开度；电动离合方式可从以上任意一种控制方式快速切换到手动塞棒操作。

The functions of the system also include: display and record of molten steel level, nozzle opening and casting speed; setting of molten steel level and nozzle opening; alarm of molten steel level at limit value etc.

In addition to taking the detection of molten steel level as the main feedback signal of the control system, the control system also considers various interference factors that have an impact on the level control. These interference factors include:

1. The influence of the change of the flow characteristics on the control system after the melt loss of the stopper

2. The influence of the weight change of molten steel in the tundish on the control system

3. The influence of the change of the casting speed of the continuous casting machine on the control system

4. The influence of the mold width change (the mold width is adjustable) on the control system

5. The influence of the vibration frequency and amplitude of the mold on the molten steel level gauge

The fIn order to overcome these disturbances, the mold. A. A of thechange compensation of casting speedcastingIn order to reduce the frequent action of the stopper, the system adopts the intergarting time change of the controller, and automatically selects a longer intergarting time when the molten steel level fluctuates light And the system will choose a shorter intergrating time when greatly.  Igauge, which can overcomemold.

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