Dynamic Pulse Interval Control System for Pulse Bag Dust Collector

Abstract

The invention discloses a system and method for controlling the deashing dynamic pulse interval of a pulse bag dust collector. A pressure sensor or a pressure transmitter 1 is mounted on a deashing compressed air pipeline 4 or a deashing air bag 5, a real-time detected pressure signal is transmitted to an electronic component through an electric wire or cable 3; the setting time T1 of the deashingair pressure is determined by using deashing air pressure set value P as control basis inside the electronic component 2; a short timer T2 is arranged on the electronic component, the electronic component 2 is used for calculation such as comparison on a deashing pressure signal and the deashing air pressure set value P, and the short timer T2 is started when the deashing pressure signal reachesthe deashing air pressure set value P; after the timing of the short timer T2 is ended, the electronic component 2 is used for driving a pulse valve 6 to carry out pulse deashing of the pulse bag dustcollector 7 through the electric wire or cable 3. Dynamic control for the deashing pulse interval ST time is realized through the deashing dynamic pulse interval DT, the service life of the deashingpulse valve is prolonged, and excellent deashing effect of the pulse bag dust collector and stable and reliable operation of the pulse bag dust collector are realized.

Description

Technical field [0001] The invention belongs to the technical field of pulse bag dust removal, and relates to a dynamic pulse interval control system for pulse bag filter dust removal, in particular to the control of the pulse interval ST between the operation of each dust removal pulse valve during the dust removal process of the pulse bag filter system. Background technique [0002] The dust removal of the pulse bag filter relies on the pulse valve, which is installed on the air bag, and the pulse valve is driven by a solenoid valve, which is driven by electronic components. [0003] The cleaning medium of pulse bag filter is generally compressed air, including compressed air and compressed nitrogen; solenoid valve and pulse valve constitute the cleaning pulse valve; the cleaning control electronics can be pulse controller, programmable controller (PLC) Or DCS control system, etc.; the dust removal device of the pulse bag filter is composed of multiple dust removal pulse valves....

AI Technical Summary

Problems solved by technology

[0008] In the air supply process of the air bag, the flow rate of the air supply is too small, and the best working pressure of the ash cleaning pulse valve is not reached, because the ash cleaning control electronic components are completed regularly according to the preset fixed pulse interval, so that the ash cleaning pulse valve is activated. The problem brought about by this is that the cleaning effect of the pulse bag filter is not good due to the low pressure of the compressed air at this time; The service life of the working diaphragm

Moreover, for the large-scale multi-chamber pulse bag filter, due to the different lengths of the air supply pipelines of each chamber, the time for establishing the pressure of the dust-cleaning compressed air is different, and the use of a fixed pulse interval also leads to The inconsistency of the cleaning air pressure of each cleaning pulse valve makes the cleaning effect of each chamber inconsistent and the flue gas load distribution of each chamber uneven, which reduces or affects the stability of the high efficiency and long life of the pulse bag filter. run

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