Dual-branch parallel dosing closed loop flow control system

Abstract

The invention provides a dual-branch parallel dosing closed loop flow control system. The system comprises a flow sensor, a flow control device, a first actuating mechanism and a second actuating mechanism. The flow control device comprises a meter, a PAC and an upper computer. The actuating mechanisms comprise metering pumps / centrifugal pumps and regulating valves. The flow sensor, the flow control device and the actuating mechanisms form a closed loop system. The first actuating mechanism and the second actuating mechanism are of a parallel connection structure. According to the dual-branch parallel dosing closed loop flow control system, actual measurement is performed on dosing flow in a pipeline, the dosage is accurately controlled, in this way, the dosing process is transformed from an indirect and manual mode into a direct and accurate mode, and the purposes of energy saving, consumption reduction and safety production are achieved. Meanwhile, due to the dual-branch parallel structure of the first actuating mechanism and the second actuating mechanism, automatic emergency treatment of a dosing system is guaranteed.

Description

technical field [0001] The invention relates to a double-channel parallel dosing closed-loop flow control system, which belongs to the field of tap water production process control, and specifically relates to the dosing flow control of the tap water purification process. Background technique [0002] The current status of the production operation of the chemical dosing and purification process in the tap water production industry is: in water plants including municipalities, the dosing operation is basically manual operation. Generally, metering pumps are used as actuators, and open-loop control systems are adopted. Manual experience estimates that the entire dosing process is in a random, indirect, and rough operation mode, and it is impossible to build a complete production safety system. [0003] The present invention measures the actual dosing flow in the pipeline through the closed-loop control system of the dosing amount, and precisely controls the dosing flow through...

AI Technical Summary

Problems solved by technology

[0002] The current status of the production operation of the chemical dosing and purification process in the tap water production industry is: in water plants including municipalities, the dosing operation is basically manual operation. Generally, metering pumps are used as actuators, and open-loop control systems are adopted. It is estimated by manual experience that the entire dosing process is in a random, indirect, and rough operation mode, and it is impossible to build a complete production safety system

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