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PLC、变频器在恒压供水系统中的应用 被引量:1

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摘要 在恒压供水中通过变频器控制水泵的速度,用以调节水管中压力,并利用PLC进行逻辑控制。PLC作为整个控制系统的核心经过检测元件实时监视、跟踪水管内压力,并经变频器的PID调节保证供水压力,通过PLC控制变频与工频切换,自动控制水泵投入的台数和电机转速,实现闭环自动调节恒压变量供水,在保持恒压下,达到控制流量的目的。目前变频调速器已成为恒压供水设备的主体,它不仅可以完全取代传统的高位水箱、水塔等供水方式,而且也消除水质的二次污染,更具有节省能源、自动化程度高、供水操作的利用率均衡,供水泵房,在运方便、提高经济效益等优点。
作者 王艳 胡灿
出处 《科技与企业》 2014年第7期353-354,共2页 Science-Technology Enterprise
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