The complete process of water leak detection for external network water pipes

We all know that if there is a leak in the water pipe then it will bring us a lot of trouble. To solve the problem of water leakage, one of the first tasks is to carry out water pipe leak detection, and only after the location of the leak is clear can we start to repair. So, what are the methods to detect water leaks in water pipes? We may not know this very well, so let's learn about the complete process of external network water pipe leak detection with PQWT Institute.

1、Collection of pipeline information

Collect the drawings of the pipeline to be tested and the data of the water consumption of the position, and the enterprise arranges the technical personnel who know the location of the pipeline to the site to inform the plane location of the pipeline, the depth of burial, the material of the pipeline, the size of the pipe diameter and other relevant information. It is also necessary to have a comprehensive understanding of the site specifics when conducting leak detection, so as to prepare for the next step of the construction arrangement of the detection work and what leak repair method to choose, including the survey of the surrounding environment of the pipe network, the inspection of auxiliary equipment, the investigation of how much water is used and the investigation of the drainage condition.

If there is no detailed construction drawing, you need to use a pipeline detector to find the pipeline direction and burial depth.

2、Collection of water leakage

In the detection area, 100% of the daytime directly to the area inside the hydrant, valve, water meter, open pipe listening, so as to obtain the sound waves transmitted from the leak point to the pipeline, detect the leak, detect the abnormal situation should be done after a very detailed registration.

3、Use water leak detector to listen to the sound detection

Use the pipe leak detector in the "census mode" mode along the ground above the pipe while walking test, observe the spectrum bar changes and headphones inside the sound changes, once close to the top of the leak, headphones sound volume will become louder, and accompanied by a low, piercing sound or water tumbling, water beads bursting sound. The spectrum cursor signal on the screen will continue to go high and maintain a certain high level above, there will be no significant up and down. Because the leak is a continuous signal.

4、Confirm the leak point and positioning

After finding the suspected leak point and then use the "positioning" mode in the pipe leak detector to further verify the use of positioning mode for "fine measurement", before and after the suspected leak point around the detection, the instrument interface appears thin strip and thick strip, thin strip is the external noise generated, thick strip is the noise of water leakage, before and after the completion of the detection, observe the point with the highest thick bar, which is the suspected leakage point.

5、Punch hole verification

We find the suspected leak, the first hole punching verification, can be more around a few more holes to determine whether there is open water, whether the ground is wet. There is water bubbling upward or clear water, below is the leak point.

6、Re-check the leak after repair

After the repair of the leak point is completed in the work area, carry out another leak detection to find out the correct location of the leak point. If there is no abnormal leakage area, then the leak detection work is complete.