Water pipe man-made sound wave leakage checking method

Abstract

The present invention discloses a method for detecting leakages on water pipes by using artificial sound waves. An air compressor with a low-frequency air pressure generator is provided. A gap degassing switch with a degassing outlet connected with a water-using valve port of a water pipe is provided in a degassing channel of the air compressor. An acoustic vibration receiver which is sensitive to the frequency of the low-frequency air pressure generator and which is characterized in that artificial sound waves easy to penetrate the layer of earth can be generated in a chamber formed by water leakage after that a water-air compound with certain frequency waves is filled into the chamber is provided on the ground of the water pipe to be tested. Therefore, the matter leaked from the ventage is only water before the compressed air is filled into the water pipe, while most of the matter leaked from the ventage is air and the amount of water is reduced after the compressed air is filled into the water pipe, and the compressed air leaked from the ventage forms a large area of impact force on the wall around and generate big airflow impact noise because the compressed air has a light deadweight. Therefore, not only the cost of a leak detecting device can be reduced, but also leaked water having tiny noise can be detected by using the method in the present invention.

Description

technical field [0001] A method for detecting leaks in water pipes, in particular a method for detecting leaks in water pipes by using artificial sound waves. Background technique [0002] Leak detection of water pipes mainly adopts the leakage listening method. This method is to move the sound sensor point by point along the ground route where the pipe is buried, amplify the natural water leakage sound collected, and transmit it to the human ear. People make judgments based on experience to determine the location of the leak. The quality of this kind of audio leak instrument varies greatly. It is difficult to hear the sound of underground water leakage if the quality is poor, while the price of good quality is very expensive. Generally, it costs 50,000 to hundreds of thousands, which is unaffordable for ordinary enterprises or audio leak departments. of. Because the natural sound of water leakage is very weak, especially after a long time of water leakage, a large hole wi...

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Problems solved by technology

The quality of this kind of audio leak instrument varies greatly. It is difficult to hear the sound of underground water leakage if the quality is poor, while the price of good quality is very expensive. Generally, it costs 50,000 to hundreds of thousands, which is unaffordable for ordinary enterprises or audio leak departments. of

Because the natural sound of water leakage is very weak, especially after a long time of water leakage, a large hole will be formed around the leak, so that the leakage water will no longer have a strong impact on the wall of the leakage hole, so the leakage water will flow into it without making a sound of touching the wall of the hole. On the ground, the sound of water leakage becomes very light at this time, especially when the buried location of the underground water pipe is unknown, it is basically impossible to find the leakage point with a general leakage listening device

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