Control System Design for Contant-pressure Water Supply

After analyzing the drawback of conventional water supply system, this thesis elaborated the basic requirements of control system for constant-pressure water supply, selected the electrical appliances, designed the main loop diagram, control schematic drawing, periphery wiring drawing for PLC & frequency converter as well as the installation and commission. The constant-pressure gas supply and energy consumption target is achieved by properly combining the PLC, frequency converter and electrical control.