Baghouse system intelligent bag leakage positioning and detecting device and method

Abstract

A baghouse system intelligent bag leakage positioning and detecting device of the present invention comprises a narrow linewidth laser light source for providing the coherent light energy for an optical fiber sensor; an acoustic optical modulator used for converting the continuous light into the pulse light of a certain pulse width and a repetition frequency; the optical fiber sensor used for detecting the airflow change caused by the bag breakage; a photoelectric detection module for converting the light energy into a voltage signal to output; a data acquisition unit for carrying out the analog-digital conversion on the collected voltage signal; a signal processing and analyzing unit for demodulating a bag breakage airflow signal, extracting the pressure change information of the airflow, and determining whether a baghouse system operates normally. The present invention also discloses a positioning and detecting method of the baghouse system intelligent bag leakage positioning and detecting device. The positioning and detecting device and the positioning and detecting method of the present invention integrate the sensing and transmission functions as one via an optical fiber, detect and transmit the bag breakage airflow pressure change signal, and are suitable for being applied to a space limited complicated industrial site.

Description

technical field [0001] The invention relates to the technical field of bag dust removal systems, in particular to an intelligent leakage bag location detection device and method for bag dust removal systems. Background technique [0002] In recent years, my country's atmospheric environmental pollution has been very serious. Due to various exhaust gas pollution, haze weather frequently occurs, which has seriously affected people's life and work. In the cement industry, the bag filter technology is a traditional dust removal technology, but there are some shortcomings: first, the filter bag is damaged, and the damage is always accompanied by its entire life cycle; The resistance of the device is large, the power consumption of the system fan is high, and the environmental protection equipment must save energy and reduce consumption. [0003] In order to solve the problem of increased operating costs caused by the overall bag replacement of the dust collector, manual leak d...

AI Technical Summary

Problems solved by technology

In the cement industry, the bag filter technology is a traditional dust removal technology, but there are some shortcomings: first, the filter bag is damaged, and the damage is always accompanied by its entire life cycle; The resistance of the device is large, the power consumption of the system fan is high, and the environmental protection equipment must also save energy and reduce consumption.

Among them, the sensing probe of the optical sensing method needs to be inserted into the pipeline, which may easily cause the sensing probe to be contaminated due to sticky dust, thereby causing false alarms in leak detection; The dust content in the clean flue gas in the dust collector is easily affected by external conditions. The measurement of the dust concentration can only be qualitatively judged, and quantitative analysis cannot be done; the fluorescent powder leak detection method can be used for small spaces and hidden areas. Leak detection can accurately locate the leak point, and it is intuitive and obvious, and it is easy to distinguish the leakage caused by the bag mouth not being compressed or the filter bag being damaged, but this method consumes a lot of phosphor powder, the detection cost is high, and manual inspection is required , the positioning of thousands of bags in the baghouse dust removal system is very time-consuming, and it is impossible to realize fully automated real-time monitoring

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