Device for utilizing PLC to intelligently control plurality of frequency converters to perform pressure regulating water supply

Abstract

Provided is a device for utilizing a PLC to intelligently control a plurality of frequency converters to perform pressure regulating water supply. A traditional microcomputer water supply control mode is broken through, each pressurized water pump is controlled through one independent frequency converter to run, the damage to the whole device caused by the frequency converter damage is effectively avoided, and burnout of the frequency converters caused by reverse power transmission caused by suction adhesion of a contactor is also avoided. An air pressure water tank is arranged, the air pressure ratio in the water tank is controlled strictly, gas is supplemented when lacked, the regulating water quantity is increased, running time and starting times of the water pumps are shortened when the water utilization quantity is small, and the effects of energy saving and power saving are achieved obviously. Noise caused by gas and water pump air blockage caused by the fact that compressed gas in the tank enters a pipe network during the power outage and water supply stopping period of the device can be effectively avoided through the arrangement of air stopping valves in the tank. Reactive loss caused by high floatation of the water utilization quantity and frequent starting of a high-power water pump can be avoided by adopting a plurality of small-power water pumps to replace the high-power water pump. Secondary pollution to living water is avoided due to the arrangement of a buffering tank, the constant air pressure ratio in the air pressure water tank is controlled, and the regulating water quantity in the water tank is guaranteed.

Description

Technical field [0001] The present invention involves a kind of tap water pressure supply equipment, which especially involves a PLC intelligent control of multiple inverter regulating water supply equipment. Background technique [0002] At present, most of the secondary pressure water supply equipment is the way without negative pressure -free equipment and direct inverter pressure supply. Although there are many advantages of no negative pressure water supply equipment, it is limited to the restrictions of municipal water supply.All water supply venues.The method of direct frequency conversion is often operated long and has a large power consumption. Especially at night, the water consumption is low, and the waste of electricity is even more prominent.At the same time, the above -mentioned water supply method is a frequency converter, a microcomputer to control multiple pressure pumps to control the water controller, which greatly increases the paralysis rate of the equipment....

AI Technical Summary

Problems solved by technology

[0002] At present, most of the secondary pressurized water supply equipment is non-negative pressure water supply equipment and direct frequency conversion pressurized water supply. The non-negative pressure water supply equipment has many advantages, but it is limited by the municipal water supply and cannot be fully suitable. all water supplies

However, the method of direct variable frequency pressurized water supply often has a long operating cycle and high power consumption, especially at night when the domestic water consumption is low, and the waste of electric energy is more prominent.

At the same time, the above-mentioned water supply methods all use a frequency converter and a microcomputer water supply controller to control multiple pressurized water pumps, which greatly increases the paralysis rate of the equipment. Once the frequency converter or controller is damaged, the whole set of equipment will be paralyzed, affecting the normal water supply. In turn, the complaint rate of users has increased, and there are problems such as inconvenient maintenance, lack of management, and monotony

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