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为解决屯兰选煤厂液位自动控制系统稳定性差、故障率高的问题,对自动控制系统的检测装置及过程控制中电磁干扰的影响进行了优化改造。介绍了液位自动控制系统结构组成及控制过程、存在问题及解决方法,并分析了液位自动控制系统的应用效果及其产生的效益。应用结果表明,自动控制系统稳定性明显提高,故障率大大降低,完全满足工艺要求,创造了一定的经济效益。
In order to solve the problem of poor stability and high failure rate of the liquid level automatic control system in Tunlan Coal Preparation Plant, the influence of the electromagnetic interference in the testing device of automatic control system and process control was optimized and rebuilt. The structure and control process of the liquid level automatic control system are introduced. The existing problems and solutions are introduced. The application effect of liquid level automatic control system and its benefits are also analyzed. The application results show that the stability of the automatic control system is obviously improved, the failure rate is greatly reduced, the process requirement is completely met, and a certain economic benefit is created.