Double-pump multi-path high-precision filling device and control method thereof

Abstract

The invention discloses a double-pump multi-path high-precision filling device and a control method thereof. The double-pump multi-path high-precision filling device comprises a controller, a double-pump mechanism and a multi-path filling mechanism, wherein the double-pump mechanism and the multi-path filling mechanism are connected between a medicament jar and a multi-path main flow pipeline in sequentially; the double-pump mechanism comprises a conventional filling pump branch and a standby filling pump branch which are connected in parallel; the fluid outlet of the double-pump mechanism isconnected with the medicament jar by virtue of a backflow mechanism; the controller is a PLC (Programmable Logic Controller); the PLC comprises a double-pump control module and a solenoid valve on-off control module; the solenoid valve on-off control module is used for controlling the on and off of a solenoid valve; and the double-pump control module is used for controlling the conventional filling pump and the standby filling pump to act. Thus, a reliable double-pump control method is adopted by the double-pump multi-path high-precision filling device, two gear pumps are shared, the load is balanced, and the two gear pumps are in mutual standby application, thereby achieving high reliability. In the double-pump multi-path high-precision filling device, the solenoid valve on-off control based on a PID-PWM (Proportion Integration Differentiation- Pulse-Width Modulation) filling pulse control method is adopted, the filling precision is high, the synchronization performance with main flow is good, and the phenomena of repeated adding and missed adding can be effectively avoided.

Description

technical field [0001] The invention relates to an auxiliary equipment used for filling petrochemical products (such as crude oil, refined oil, etc.) or water to be treated, especially a double-pump multi-channel high-precision filling device. The controller of the device It is established based on a reliable dual-pump control method and an advanced PID-PWM filling pulse control method. Background technique [0002] In order to improve the performance of petrochemical products such as crude oil and refined oil, it is necessary to add various chemicals to the oil according to a series of conditions such as variety, season, temperature, humidity, etc., such as adding detergent to the fuel to fully burn the fuel to reduce pollution. Improve the power and service life of the engine; in order to improve the water quality, it is necessary to add a variety of chemicals to the water to be treated, such as: demulsification and degreasing agents, flocculation agents and bactericidal a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention The purpose of the present invention is to solve the problems of high labor intensity and poor metering accuracy in the current way of manually filling medicaments, the use of metering pumps is easy to be affected by the environment, the metering accuracy is low, and multiple sets of injections need to be purchased. Filling equipment, the problem of extremely low cost performance, design a double-pump multi-channel high-precision filling device

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