Automatic control method for small-sized bag type dust remover

Abstract

The invention provides an automatic control method for a small-sized bag type dust remover. The automatic control method comprises an interval jump dust removing process of the dust remover, a dust discharging control process of the dust remover, a centralized overhaul control process and a centralized overhaul / automatic dust removing switch control process; the bag type dust remover is generally positioned in the interval jump dust removing process of the dust remover after the bag type dust remover is opened; interruption conditions of the centralized overhaul process are artificially set; and the interruption priority of the centralized overhaul control process is higher than other control processes. According to the automatic control method disclosed by the invention, any interval jump dust removal in the dust removing process of the small-sized bag type dust remover is realized; the optimal control over the dust removing process is realized; the memory function of the dust conveying and discharging process of the small-sized bag type dust remover is realized; and the reasonability and the safety of the dust conveying and discharging process are ensured.

Description

technical field [0001] The invention belongs to the field of pulse bag dust collector system control, and in particular relates to an automatic control strategy for a pulse dust cleaning system and an ash conveying and unloading system of a small bag dust collector. Background technique [0002] With the improvement of people's awareness of environmental protection and the improvement of environmental protection laws and regulations, iron and steel enterprises regard the control of dust pollution as an important task. Due to its small footprint, high work efficiency, and low operating costs, the small bag filter is very suitable for dust removal in small-scale dust-polluted areas such as blast furnace raw fuel transportation and transfer stations, and plays an important role in the control of dust pollution in these areas. important role. [0003] The amount of dust in the dust removal area where the small bag filter is located is not large, so the number of dust removal bo...

AI Technical Summary

Problems solved by technology

The gradual cleaning logic is simple and easy to control, but some studies have shown that the continuous injection of adjacent pulse valves may easily lead to a too low pressure of the compressed air bag in a box, which cannot guarantee the injection effect and cannot realize the optimal control of the injection process; 2. The ash unloading process is controlled by a gradual cycle, that is, after receiving the ash unloading start command, the ash unloading will be cycled successively from No. 1 ash hopper to the last ash hopper, and stop ash unloading after receiving the ash unloading stop order

The existing control strategy can realize the automatic cleaning and unloading of the dust collector, but because of the lack of close integration with the inherent characteristics of the small dust collector, it is impossible to realize (arbitrary interval) jump cleaning, which affects the performance of the dust collector to a certain extent. In addition, the automatic ash unloading process always starts from the No. 1 ash unloading valve, and the ash unloading starts one after another. When the stop ash unloading command is received, the ash unloading is stopped and the ash conveying system is delayed.

This automatic ash unloading strategy without a memory function will easily cause excessive dust accumulation in the ash hoppers with lower numbers, making the ash unloading process a hidden danger

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