Dust removing system capable of dynamically and stably adjusting blowing rate

Abstract

The invention discloses a dust removing system capable of dynamically and stably adjusting the blowing rate. The dust removing system comprises a dust removing system body. A pore plate adjusting valve is arranged on a branch pipe of each dust collecting branch circuit of the dust removing system body, the pore plate adjusting valves comprise pore plates and valve elements capable of being automatically controlled, and the valve elements are conoid valve elements; the open areas of the branch pipes can be adjusted by adjusting the distances between the valve elements and the pore plates, pressure detectors are arranged on the positions, close to pipe orifices, of the branch pipes, and pressure signals detected by the pressure detectors are connected to a comparator and a PID controller; and then the PID controller is connected with the pore plate adjusting valves, after parameters of the PID controller control are set by a fuzzy controller, the PID controller controls the opening degrees of the pore plate adjusting valves, so that the open areas of the corresponding branch pipes are controlled, and the purpose of stable pressure suction is achieved. According to the dust removing system capable of dynamically and stably adjusting the blowing rate, the opening degrees of the valve elements are adjusted by utilizing an automatic control system, the influence brought by system pressure fluctuation is dynamically eliminated, the stable blowing rate of the dust removing system is maintained, and the dust removing effect is ensured.

Description

technical field [0001] The invention belongs to the field of dust removal equipment and relates to a dust removal system, in particular to a dust removal system whose air volume can be dynamically and stably adjusted. Background technique [0002] With the rapid development and large-scale of China's industry, industrial pollution is becoming more and more serious, especially industrial dust pollution. The most direct, effective and extensive means of preventing and controlling dust pollution in industrial production is to adopt ventilation and dust removal measures. Ventilation and dust removal is to effectively control the dust source to be treated by means of ventilation, and to extract the dusty gas, which is purified by the dust collector and discharged into the atmosphere. In order to adapt to the rapid development of industry, the dust removal system is becoming larger and more complex. A dust removal system contains dozens or even hundreds of dust collection hoods. ...

AI Technical Summary

Problems solved by technology

In order to adapt to the rapid development of industry, the dust removal system is becoming larger and more complex. A dust removal system contains dozens or even hundreds of dust collection hoods. There are many parallel branches in the pipe network, and the pipeline is complicated. The air volume distribution of the dust collection points is not balanced, and the air volume of some dust collection points is too small to effectively control the dust source. The material is pumped away, and the wind speed of the branch pipe is too high, causing serious wear and tear of the pipe, resulting in poor dust removal effect of the dust removal system, and the working environment cannot meet the requirements of safety production regulations. Industrial dust diffuses and dust spills cause serious environmental pollution, endangering human health and affecting craft production

[0003] Traditional PID control requires the controlled object to have an exact model and a linear process. For control objects without an exact model or nonlinearity, traditional PID control cannot achieve ideal results.

The dust removal system is a discrete, multi-variable, large time-delay, time-varying fluctuation nonlinear system that is difficult to stabilize. It is difficult to achieve precise control of the orifice control valve using conventional PID control to ensure the stability of the system air volume in the dust removal system.

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