A fault detection system and detection method for a pulse valve of a bag filter

Abstract

The invention discloses a system and a method for detecting the fault of a pulse valve of a bag-type dust collector. A digital pressure gauge is additionally arranged between a pressure regulating valve and an injection pressure gauge; the digital pressure gauge is connected with a programmable logic controller (PLC) system; the PLC system is connected with an alarm display device. The pressure regulating valve is adjusted into a working pressure value which is set to be 0.1-0.35MPa; at the moment, the digital pressure gauge and the injection pressure gauge display the maximum injection pressure value regulated by the pressure regulating valve; the PLC system receives the maximum pressure value transmitted by the digital pressure gauge, and the pressure value is taken as a standard value; when cloth bag injecting and shaking work is carried out, an electromagnetic valve is started after receiving a command of an injecting and shaking control cabinet, an acquired value is transmitted into the PLC system by the digital pressure gauge, and the PLC system makes judgment; when the difference value between the standard value and the acquired value is lower than 0.015MPa or exceeds 0.04MPa, the pulse valve is judged to run with fault, and fault information is displayed on the alarm display device.

Description

technical field [0001] The invention relates to a bag filter, in particular to a pulse valve fault detection system and method for the bag filter. Background technique [0002] The bag dust collector on the existing pellet production line is an online pulse dust collector. The dust removal method uses compressed air to be released instantaneously through a solenoid valve, and the pressure generated will vibrate the dust on the bag into the ash hopper. The pulse jet controller is the main control device of the jet cleaning system of the pulse bag filter. Its output drives the electromagnetic pulse valve, and then controls the compressed air to spray and clean the filter bags sequentially, so that the running resistance of the dust collector is kept within the set range, so as to ensure the processing capacity and dust collection efficiency of the dust collector. The controller outputs a driving voltage of one bit at a time, and the duration of a driving voltage is called the...

AI Technical Summary

Problems solved by technology

[0003] However, in daily maintenance, it is found that the armature and the diaphragm are the most faulty components, and it is not easy to be found after a problem occurs. Maintenance personnel need to be on the top of the platform, climb more than 30 meters of stairs, and judge by listening to the sound one by one. There are more than 72 solenoid valves, and the injection cycle is at least 10 seconds. It takes 12 minutes to judge all of them. Some of them need to listen to the judgment repeatedly. It takes about 2 people and 1 hour to mark all the solenoid valves that have problems. , after confirming everything, stop the fan for maintenance

Images