Ultrasonic wave dry fog dust-fall device and multi-loop cascade stage PID control method thereof

Abstract

The invention discloses an ultrasonic wave dry fog dust-fall device and a multi-loop cascade stage PID control method thereof. The ultrasonic wave dry fog dust-fall device comprises a dry fog quality control system. The dry fog quality control system comprises a first signal collection unit, a second signal collection unit, a third signal collection unit, a master controller, an air pressure regulator and a water pressure regulator, wherein the first signal collection unit is used for collecting fog-drop quality parameter information; the second signal collection unit is used for detecting an air pressure value in an air inlet pipe; the third signal collection unit is used for detecting a water pressure value in a water inlet pipe; the master controller is used for receiving the fog-drop quality parameter information, making comparison between the fog-drop quality parameter information and a preset value, and determining whether to output a given air pressure value and a given water pressure value according to a comparison result; the air pressure regulator is used for receiving the air pressure value and the given air pressure value, making comparison between the two, and adjusting power of an air pump according to the comparison result; the water pressure regulator is used for receiving the water pressure value and the given water pressure value, making comparison between the two, and adjusting an opening degree of a solenoid valve according to the comparison result. By means of the dry fog quality control system, it is guaranteed that the device is capable of generating effective dry fog continuously and equipment life is prolonged.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to an ultrasonic dry fog dust suppression device and a multi-circuit cascaded PID control method thereof. Background technique [0002] In recent years, with the continuous development of industrial production and life, metallurgical steelmaking electric furnaces and boilers fueled by raw coal have continued to increase. The air pollutants emitted by these furnaces, especially the respirable dust particles with a diameter of less than 10 microns, are It is the main source of occupational diseases such as pneumoconiosis and dust pollution. [0003] Traditional dust removal technology is mainly divided into two categories: dry dust removal and wet dust removal. Dry dust removal is to suck the polluted air into the dust removal equipment for treatment and then discharge it into the atmosphere. This passive treatment not only loses materials, but also easily produces...

AI Technical Summary

Problems solved by technology

However, during the ultrasonic resonance process, water and air continuously impact the resonant cavity, which is easy to cause impact and abrasion of the resonant cavity; if sewage with particles is used, the particles will further damage the resonant cavity; once seawater or other corrosive substances are used The water will cause the resonant cavity to be corroded, and the natural frequency of the resonant cavity will increase due to the wear of the cavity

In the existing dry fog device, the water pressure value and air pressure value remain unchanged after initialization. However, the nozzle and resonant cavity are easily worn due to the above-mentioned various reasons, and the worn nozzle, resonant cavity and air pressure value are no longer coupled. , will not be able to produce effective dry fog

At present, we can only rely on frequent replacement of nozzles to solve the problem of continuous and effective dust suppression, which also causes the problems of real-time observation and replacement of dry fog dust suppression systems, high maintenance costs of nozzles, and low utilization of water and air resources.

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