A method for diagnosing blockage faults of buried drainage pipes and pipe tees based on active acoustic detection
A drainage pipeline and active detection technology, which is applied in the pipeline system, uses acoustic wave emission technology for material analysis, gas/liquid distribution and storage, etc. It can solve the problems of pipeline blockage, pipeline tee pieces and signals that are difficult to distinguish, and improve accuracy. sexual effect
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Embodiment 1
[0043] Embodiment 1: A detection device based on the blockage fault of the buried drainage pipe and the tee piece based on acoustics. The experimental device is attached figure 1 shown. During the specific implementation, two telescopic brackets are inserted into the bottom of the pipeline through the manhole cover, and the two rods are side by side. The speaker at the lower end of one of the telescopic brackets is fixed to emit sound waves in the buried drainage pipe. The speaker model is the American EVUW30 underwater speaker. , the sound wave signal is generated by a computer-controlled sound card equipped with WinLMS software to generate a 10-second sine sweep sound signal. The sound card model is ASUS Xonar D-Kara, and the frequency range of the signal is 100-6000 Hz. The amplified signal passes through the telescopic rod The built-in wire of Ⅰ is transmitted to the speaker, and the LM3886 power amplifier is selected; the sound wave receiver is placed at the bottom of th...
Embodiment 2
[0044] Embodiment 2: In this embodiment, data from the pipeline laboratory of the University of Bradford in the United Kingdom is used for example verification, and the specific method is as described in the foregoing summary of the invention.
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