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研究刚果(布)体育中心给水机房恒压变频供水系统,阐述恒压变频供水系统的结构组成;结合体育场馆用水要求,分析恒压变频供水系统的控制原理及其工艺特性,采用闭环负反馈PID控制器实现供水主管压力调节,运用西门子可编程逻辑控制系统S7-300完善硬件配置,建立下位机PLC控制程序,实现供水系统稳压节能高效运行。
Research on the structure of constant pressure frequency conversion water supply system in Conservancy Sports Center water supply room, combined with the water requirements of sports venues, the control principle and process characteristics of constant pressure frequency conversion water supply system are analyzed. The closed loop negative feedback PID The controller realizes the pressure regulation of the water supply supervisor, improves the hardware configuration by using the Siemens programmable logic control system S7-300, establishes the PLC control program of the lower computer, and realizes the energy saving and efficient operation of the water supply system.