Intelligent control system and method for dynamic flow of submerged pump

Abstract

The invention provides an intelligent control system and method for dynamic flow of a submerged pump, and aims to solve the problems that fluctuation of water inflow in a liquid pumping hole of an in-situ leaching uranium mining system is large, a liquid pumping submerged pump is damaged severely, if the pump is lifted to be overhauled, the labor intensity is large, and production and maintenance costs are high. According to the method, flow movement average value is calculated, flow set value is given dynamically, control parameters of a frequency converter are adjusted automatically through a PID control algorithm, flow is dynamically and intelligently controlled, dynamic balance of liquid pumping and liquid injecting is kept, the liquid pumping effect is improved, the running efficiency of the pump is improved, the service life of the pump is prolonged, consumption of the pump is reduced, production cost is saved, and labor intensity is reduced. Through statistics of many years of field running conditions, single-hole loss is reduced to 15,200 yuan from the maximum loss 68,200 yuan after the control method is used.

Description

technical field [0001] The invention belongs to the technical field of uranium mining and metallurgy in-situ leaching, and in particular relates to an intelligent control system and method for dynamic flow of a submersible pump. Background technique [0002] The traditional submersible pump control method adopts fixed frequency operation. As the operation time goes by, the ore-bearing aquifer will form a physical or chemical blockage, and the fluidity of the liquid will become poor, resulting in a decrease in the water level of the pumping hole, which will eventually cause the submersible pump to emerge from the water. The second is to carry out open-loop control through the operating current of the inverter. When the current is less than the set value, the motor will run at the set frequency. When the current is greater than the set value, the inverter will quickly drop to the preset low. Frequency operation, when the pumping hole lacks water, this control method reduces th...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to propose an intelligent control system for the situation that the water influx in the pumping hole of the ground leaching uranium mining system fluctuates greatly, the pumping submersible pump is seriously damaged, the labor intensity of lifting the pump is high, and the cost of production and maintenance is high. and methods

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