Online matching control device for intelligent water pump system

The invention discloses an online matching control device for an intelligent water pump system. A pressure difference transducer, a flowmeter and an electric regulating valve are arranged on a water pump inlet and outlet pipeline; a touch screen, a programmable logic controller and a wireless data transmission module for forming an expert controller are arranged near a water pump; an electric quantity transducer and the wireless data transmission module are arranged on an electric control cabinet; real-time operating parameters of the water pump are transmitted to the programmable logic controller through a data acquisition channel; real-time characteristic curves, working condition points and operating parameters of the water pump are displayed on the touch screen through operation of the expert controller, and the electric regulating valve is controlled; therefore, the water pump operates at the highest efficiency point. The online matching control device for the intelligent water pump system has the characteristics of simple structure, convenient installation and debugging and obvious energy-saving effect. The water pump efficiency can be improved by 7 percent, the shaft power is reduced by 6kW, and the energy is saved by 12.2 percent. The device can be widely applied in energy-saving design and transformation of water pump systems in various fields.