Views: 2 Author: pqwt Publish Time: 2023-02-25 Origin: PQWT
Leakage is inevitable during the use of underground water pipes, especially those buried deep underground, and it is difficult to find the leak quickly. So, what is the detection method for groundwater leaks? What about underground pipe leaks? Let's look at these two questions!
What are the leak detection methods for underground water pipes.
There are a variety of leak detection methods, such as regional installed meter method, listening method, acoustic shock method, infrared method, tracer element method, related signal detection and buried medium change detection method. Any kind of detection method is essentially detecting some kind of effect caused by water leakage, the more obvious the corresponding effect the simpler the detection. Currently widely used application method for listening to the sound method, acoustic shock method. The working principle of this method is that after the pressure water pipe leak pressure water rushing out from the broken mouth of the pipe, and the sound vibration generated by the friction of the pipe wall and other additional vibration caused to the pipeline above the ground, using pipeline leak detector in the road to detect and find out the leak.
In general, the basic detection method is, connect the pipeline leak detector host, headphones, sensors. Turn on the switch, put on the headset, place the sensor on the road above the pipeline, place it step by step according to the length of the pace, and listen to it step by step, the closer to the leak, the stronger the signal, the farther away from the leak the weaker the signal, by comparing the signal strength between different points to achieve the purpose of detecting the leak. Therefore, we use the pipeline leak detector, a single point to listen to the leak signal is not meaningful, multi-point repeatedly compared, compared to the sound vibration of the larger place is the leak, of course, we have to consider many other additional factors, such as the direction of the leak breakage mouth, because the pipe is round, if the side of the leak, the larger point may be in the The side of the road above the pipe, rather than the road above the pipe, so the location of the pipeline to know, in addition to the tee, bend, water pressure, burial depth, buried layer, etc. will have an impact on the detection to take these into account.
Underground pipeline leakage how to do.
1. Large area leaks
First, if the underground pipeline leakage is large, it is recommended to cut off the leaking part, re-welding the same diameter or thickness of the same steel plate. But before welding. After welding, rust prevention and corrosion prevention should be carried out respectively. Anti-corrosion treatment. If the iron pipe is cracked in the circumferential direction, the steel pipe casing must be added. If the pipe is cracked in the longitudinal direction, the cracked area can be cut off and the casing can be put down again.
2. Patch welding
Next, when the pipe is repaired, the water valve should be closed, then the leaking surface should be wiped clean, a hole should be drilled on both sides of the crack to supplement the weld bevel, and then corrosion treatment should be applied. In addition, if the pipe is iron, it needs to be welded with an iron rod.
Finally, if the water pipe flange is damaged causing a leak, care should be taken when replacing the rubber gasket that the bolt must be aligned with the hole before it can be tightened. If the foundation is sinking, it is recommended to add struts to the pipe. In addition, if the bearing port of the water pipe leaks, the surface must be cleaned, compacted with linseed oil, and then sealed with asbestos cement
Translated with www.DeepL.com/Translator (free version)