Air leakage monitoring system and method for ultra-long-distance flexible air duct

Abstract

The invention provides an air leakage monitoring system and method for an ultra-long-distance flexible air duct, the system comprises a plurality of sonic sensors, a plurality of monitoring substations and a central processing unit, the sonic sensors are in wired or wireless connection with the monitoring substations, and the monitoring substations are in wired or wireless connection with the central processing unit. Each monitoring substation is correspondingly connected with a plurality of sonic sensors; the central processing unit receives vibration frequency data uploaded by the monitoring substation, and the vibration frequency data is obtained after the sonic sensor monitors the ultra-long-distance flexible air duct and is transmitted to the monitoring substation; if the central processing unit judges that the vibration frequency data belong to the fault frequency data, the central processing unit judges that the section, corresponding to the sonic sensor, of the ultra-long-distance flexible air duct leaks air. According to the air leakage monitoring system of the ultra-long-distance flexible air duct, the air leakage position can be accurately judged after air leakage of the air duct according to the serial number of the sonic sensor.

Description

technical field [0001] The invention relates to the field of coal mines, in particular to an air leakage monitoring system and method for an ultra-long-distance flexible air duct. Background technique [0002] With the rapid development of modern science and technology, the underground tunneling distance of coal mines is constantly breaking through, and the air leakage problem of long-distance air supply air ducts is born. [0003] The air leakage problem of the ultra-long-distance flexible air duct currently used has the characteristics of large randomness such as irregularity and uncertainty. The most effective way to check whether the flexible air duct leaks is to listen to its sound. However, due to the serious interference of various sounds such as roadway belt operation and locomotive operation, personnel cannot detect air leakage in time, resulting in more and more air leakage from the air duct, so the air volume at the location where the wind is used is insufficient,...

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Problems solved by technology

[0004] Based on the above problems, the present invention proposes an air leakage monitoring system and method for an ultra-long-distance flexible air duct, which solves the problem of insufficient air volume at the working face in the prior art when the on-site staff finds that there is air leakage in the air duct, but due to the air supply distance If it is too long, it is impossible to accurately lock the air leakage duct for a period of time, resulting in a delay in the treatment of air leakage, which in turn leads to various accidents such as gas exceeding the limit, gas explosion, and personnel suffocation at the location where the air is used

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