Detection method of air leakage rate of annular cooler based on blind source separation and unilateral detection method

Abstract

The invention discloses a method for detecting the air leakage rate of a ring cooler based on blind source separation single-side detection method. A plurality of first sound signal collectors are installed on a trolley of the ring cooler, and a plurality of second sound signal collectors are installed at the positions of the ring cooler. The method comprises the steps of collecting the sound dataof the ring cooler and the sound data of the trolley, sorting to obtain a normal sound sample set, performing blind source signal analysis on the data in the normal sample set, establishing a normalsound source model of the ring cooler; collecting online sound sample of the ring cooler in real time, comparing with a normal sound model, determining whether the on-line sound sample is abnormal ornot, if the data of the on-line sound sample is abnormal, comparing the data of the online sound sample with the air leakage sound model in an air leakage fault library, judging whether the online sound sample belongs to the defined air leakage fault or not so as to judge whether an air leakage fault occurs in the ring cooler, and if not, giving a conclusion in an artificial diagnosis mode, and storing a new fault state.

Description

Technical field [0001] The invention relates to a method for detecting air leakage rate of an annular cooler based on a blind source separation unilateral detection method. Background technique [0002] Circumferential cooler is a large-scale equipment used for material cooling. Its main working principle is to load high-temperature materials through a trolley and drive on a circular track. There is a wind box at the bottom of the trolley, which blows the interior of the trolley, and the high-temperature materials are blown through the air cool down. On the outside of the ring surrounding the ring cooler, several blowers will be set up according to the air volume requirements to provide air sources for the cooling process. [0003] The small granular materials to be cooled are evenly distributed in the form of a thick material layer on the ring cooler. To ensure sufficient cooling of the materials, the ring cooler is equipped with a wind box under the trolley and connected to a bl...

AI Technical Summary

Problems solved by technology

Due to the sealing structure of the annular cooler and the maintenance problems of long-term use, air leakage will occur during the cooling production process, resulting in insufficient cooling and waste of blower energy. In the case of serious air leakage, the discharge temperature of the annular cooler may even be too high Production Accidents Burning Conveyor Belts

Due to the complex structure of the ring cooler and its attached bellows, air pipes, valves, etc., and working at high temperature, the detection of air leakage rate has always lacked effective means

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