DCS环境下计量泵数字变频控制  

Digital Frequency Conversion Control of Metering Pumps Under DCS

作　　者：顾煜佳 陶柳青 李康康[1] 何德峰[1] 余世明[1] 

机构地区：[1]浙江工业大学信息工程学院,浙江杭州310023

出　　处：《工业控制计算机》2017年第4期53-54,共2页Industrial Control Computer

摘　　要：计量泵广泛应用于石油、化工及水处理领域,其中计量泵流量的检测和控制尤为重要。传统流量调节方案精度差,自动化程度低,针对这一问题,提出一种数字变频控制器在DCS中的应用方法,并给出具体的流量和累积量的计算原理。实验测试表明:该方法能使计量泵在工程应用许可的误差范围内稳定运行,仅用一对电缆即可同时实现流量检测和调节,有助于节约工业成本,提高自动化水平。Metering pumps are widely used in the fields of petroleum,chemical and water treatment,whose flow detection and control are particularly important.The traditional flow regulation scheme has a poor precision and low degree of automation.Aiming at this problem,a controller with digital frequency converter is proposed to be used in DCS and the calculation principle of the specific flow and the cumutant is given in this paper.The experimental results show that this method can make the metering pump run stable within the error range of the engineering application,and just need one pair of cables re- alize the flow detection and regulation at the same time,which can save the industrial cost and improve the automation level.

关 键 词：计量泵 DCS 数字变频控制器 流量检测与调节 

分 类 号：TH38[机械工程—机械制造及自动化]