Flow cutoff control device with memory function and flow cutoff control method thereof

Abstract

The invention relates to a flow cutoff control device with a memory function and a flow cutoff control method thereof. The flow cutoff control device is used for carrying out automatic precise control based on a PLC (Programmable Logic Controller) system and consists of an intelligent control box, a driving device, an electric gate and a water level gauge, wherein an input terminal of the intelligent control box is connected with the water level gauge, an output terminal of the intelligent control box is connected with the driving device, the driving device is connected with the electric gate so as to drive the opening / closing of the electric gate, and the water level gauge, a flowmeter and an online water quality detector can be used separately or in a cooperated manner and are mounted according to specific regional implementation circumstances. When a signal is detected by the water level gauge, the signal is fed back to the intelligent control box, a command signal is sent out after the signal is subjected to conversion, analysis and calculation in the intelligent control box, the run / stop of the driving device is automatically controlled by the PLC system of the intelligent control box according to the feedback signal, and then, the electric gate is driven to open / close by the driving device, so that the size of cutoff flow can be controlled accurately, thus, the pollution to environment is reduced, and rainwater, which reaches use standards after flow cutoff, can be subjected to resource utilization.

Description

technical field [0001] The invention belongs to the technical fields of urban drainage systems and environmental protection, and in particular relates to a flow interception control device based on a PLC system and having a memory function. Background technique [0002] With the continuous development of urbanization, the initial pollution problem caused by urban rainwater runoff has become increasingly prominent. At present, the initial urban rainfall runoff is generally intercepted into the sewage pipeline by building interception wells and interception pipes, and then transported to the sewage treatment plant for treatment. Therefore, interception wells are key facilities for pollution control of initial rainfall runoff. In practice, the existing interception wells can either control the interception volume of the initial rainwater by using overflow weirs to control the water level, or use mechanical devices such as floating ball valves for semi-natural control, which ca...

AI Technical Summary

Problems solved by technology

In practice, the existing interception wells control the initial rainwater interception flow by either using the overflow weir to control the water level, or using mechanical devices such as float valves for semi-natural control, neither of which can accurately control the interception flow of the initial rainfall runoff , especially the pollution degree of the initial rainfall runoff cannot be accurately controlled, which may not only lead to the increase of the diameter of the interceptor and sewage pipes and the increase of the sewage treatment capacity, resulting in unnecessary economic investment, but also may lead to the inability to pollute the initial rainfall runoff. be effectively controlled

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