Single-frequency-conversion automatic control system of non-negative-pressure water supply equipment and implementation method thereof

Abstract

The invention discloses a single-frequency-conversion automatic control system of non-negative-pressure water supply equipment. The system comprises a PLC, wherein the PLC is connected with an interlocking control circuit, a PID regulator of a frequency converter, a pressure transmitter and a steady flow tank, the interlocking control circuit and the PID regulator of the frequency converter are connected with a contactor group, a plurality of pressure gauges are arranged between the pressure transmitter and the steady flow tank, and the contactor group is connected with a water pump; a controlsystem comprises three-phase power L1, L2 and L3, wherein the three-phase power L1, L2 and L3 are connected with one end of a breaker QF1, and the other end of the breaker QF1 is connected with a breaker QF2, a contact of a relay KM1 and a contact of a relay KM2. The single-frequency-conversion automatic control system of non-negative-pressure water supply equipment has the following advantages that each water pump is provided with a frequency converter and an automatic energy optimization function, a real-time parameter curve tracking system is adopted, the original pressure of tap water isfully utilized to save energy, and a multivariable fuzzy control technology is adopted.

Description

technical field [0001] The invention relates to a single-frequency conversion automatic control system for non-negative pressure water supply equipment and a realization method thereof, belonging to the technical field of electronic control. Background technique [0002] Secondary water supply facilities are mainly set up to make up for the lack of pressure in municipal water supply pipelines and to ensure water use for people living in high-rise buildings. Compared with raw water supply, the safety and reliability of secondary water supply has always been widely concerned by citizens. Traditional secondary water supply equipment adopts a single system for water supply. The water supply pipe network outlet pressure detection gauge collects the water supply pipe network outlet pressure and sends it to the controller. The controller compares the received water supply pipe network outlet pressure value with the Compare the pre-set water pressure value of the user, and adjust t...

AI Technical Summary

Problems solved by technology

[0004] 1. Does not have automatic energy optimization function;

[0005] 2. The original pressure of tap water cannot be fully utilized, resulting in high energy consumption;

[0007] 4. Does not have automatic "sleep" and "wake up" functions;

[0008] 5. Does not have the function of automatic removal of faulty water pumps

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