Online matching control device for intelligent water pump system

Abstract

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.

Description

technical field [0001] The invention relates to an online matching control device for an intelligent water pump system in the fields of metallurgy, petrochemical, papermaking, power plant, machinery, mine, kiln, building, urban water supply and drainage, heating station, oil field, large-scale agricultural irrigation, and centralized air conditioning. Background technique [0002] The water pump is a general-purpose machine with a wide range of applications and a large volume. Water pumps are used in various production and living sectors of the national economy, such as metallurgy, petrochemicals, papermaking, power plants, machinery, mines, furnaces, buildings, urban water supply and drainage, heating stations, oil fields, large-scale agricultural irrigation, ships... [0003] The current water pump system has low operating efficiency, huge energy consumption and backward level. According to authoritative data, the power consumption of motor systems in my country currently...

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Problems solved by technology

In the past, due to the division of professional modules in higher education in my country, the research on the performance of water pumps was limited to the content of this major, and the scientific principles of the system that fundamentally changed the performance of water pumps after they were installed in the system were unclear. The performance of water pumps and the characteristics and operation of piping systems The control strategy does not match, and the design calculation method of the design department is backward. The selected water pump capacity is at least 1.7 times the actual needs. The water pumps generally have large flow, small temperature difference, low efficiency of large horses and small vehicles, and most of them say no to the system matching situation. Running in the dark with clear and unknown roads

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