Urgent need for outdoor buried fire pipe leak detection scheme

I know that the sky is high and the water is long.

The usual scheme is as follows:

1. Find out the degree of water leakage in the fire pipe, for example, read how many cubic meters are leaked per hour, the pressure value and the speed at which it drops through the water meter. This data is important for analysis.

2. Collect and sort out drawings, according to regulations, each fire protection system should have detailed as-built drawings, including plane as-built drawings, elevation as-built drawings, etc. For outdoor fire pipes, as long as there are detailed pipe network drawings, there is an 80% chance of detecting water leaks. (If anyone says that 100% of the water leaks can be detected, and they say this without understanding the pipe network drawings, you will suspect that you have encountered the rivers and lakes).

3. If there is sonic vibration near the leakage point, use the sensor to accept the vibration and find the location of the suspected leakage point. This step requires a lot of specialized detection equipment.

4. Confirm the suspected leakage, drill a small hole in the ground, and use a mechanical leak listening rod to directly contact the pipeline, and finally determine whether it is a leakage.

5. The auxiliary methods include gas testing method and related testing method, and you don't need to know very much about these steps. You can also give me my name, which has a very detailed and professional description.

I can tell you that you can't detect a fire leak, or the drawings are not detailed, or the pipe leakage is too small (so small that it only leaks when pressurized) or it is disturbed by the noisy environment. If you can avoid the above factors, the leak point should be able to be found.

Also, I've seen people suggesting that you test the pressure in stages. I said: under the guidance of a professional, the pressure test should be carried out in sections, because the cost of pressure testing is very high and cumbersome, and sometimes the setting needs to be repaired and replaced.

With their guidance, the number of pressure tests can be reduced and the scope of water leakage can be reduced as soon as possible. However, the final identification of leaks is still carried out in the traditional way.

I don't know if I'm satisfied with you, if not, you can continue to communicate.

It is a very troublesome thing, many methods have been taken, and a professional leak detection team of tap water has been invited to test with professional leak detection instruments, and the effect is not good. In the end, it is still planed in sections to solve the problem. There is no such thing as a good way, and I don't know if it will be useful to you.

This one is troublesome, sectional testing. Test section by section, pressurized.

You can close the valves in the pipe wells separately and test them in sections, first determine which section is specific, and then look for it in this section.

Draw water into it, and the water will be pressed enough to arch out.

Add phosphor and shine with a lamp at night.

If the buried pipeline is leaking, report it to the relevant departments and ask them to come and repair it. We can't do it personally.

To dig out the pipes and repair them, you need to hire professionals.

If the renovated house is not recommended to be replaced, it is better to check for leaks and repair.

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By closing the main valve of the fire pipe network, confirm the leakage section, and observe the ground to confirm the leakage point. Confirm that the valve can be closed completely, according to our experience, domestic valves, especially after 1-2 years of installation of the valve, more than 70% are difficult to close, the valve can be closed, you can confirm the approximate area of water leakage, carefully check the ground status above the pipeline in this area, whether there is sagging, especially wet, and whether there is stable clean water in the sewer next to it. This water leakage detection method is suitable for the general public, the technical content is not high, but it is difficult to accurately locate the leakage point, the excavation area is large, and it is easy to cause false excavation.

Listen to the sound when it's quiet. At 2 o'clock in the morning, in the dead of night, when the surroundings are very quiet, follow the pipes slowly, if the water leakage is large, there is a certain probability that you can hear the sound of water leakage. It is useful for leaks with shallow burial and large water leakage.

Use a professional auditory leak detector. This is generally only a professional leak detection company equipped with professional instruments, the listening rod and the leak detector have the same end, experienced leak detectors can use them to accurately locate part of the leakage point, buried in about meters, the leakage is not very large can also play a role.

Please ask a professional water leak detection company. In the case that the listening rod and leak detector cannot solve the problem, you can only turn to a professional water leak detection company, because they are also equipped with more professional water leakage detection equipment such as pipeline meters and correlation instruments. These professional equipment are much stronger than humans in terms of positioning accuracy and anti-interference, and combined with their professional leak detection experience, they can solve the problem of water leakage in complex situations.

Whether it's a basement or an outdoor floor. The main thing is to see where you have a serious water leak. Carefully investigated that place.

There is a special instrument to check for water leaks, which can detect and then excavate and repair.

The size of the water leak determines the troubleshooting method.

Installation Preparation Dry pipe installation Alarm valve installation Riser installation Spraying layered dry branch pipe, fire hydrant and branch pipe installation Water flow indicator, fire pump, high water tank, water pump combiner installation

Pipeline pressure test Pipeline flushing Sprinkler head branch installation (system comprehensive pressure test and flushing) Throttling device installation Alarm valve fittings, fire hydrant fittings, sprinkler head installation System water test.

Precautions: 1. Material specifications and materials: galvanized steel pipe DN;

2. Buried depth: - meters;

3. It is strictly forbidden to lay on the untreated loose soil layer;

4. Anti-corrosion treatment;

5. Concealment of soil after pressure test.

Introduction to Fire Pipes:

As the name suggests, the fire pipe is a pipeline system established for fire fighting, due to special needs, the thickness and material of the fire pipe have special requirements, and spray red paint to transport fire water.

The galvanized steel pipe connection is generally held or welded.

What is the connection of seamless steel pipes greater than 100' for fire fighting.

This water department has, a complete set of underground pipeline leakage equipment imported from Japan or Germany, **26-400,000 yuan.

Speed solution: find the local water company, they have an instrument called the detector (with the mine detector test), can detect whether the pipeline leaks 2 meters underground, in the past, if the pipeline leaks when our unit is building the external network, look for them (5000 meters of pipeline 3 hours OK), and you must ensure that this pipeline is found faster (one is when they come to detect the big pump, the other is to rent a water truck to press the pipeline). They come out to detect it is generally 5000rmb (Liaoning price), if there is a relationship with each other, please have a meal OK.

Finally: give a few points next time, this is a total of 20 points worth experience.

It's really hard for you to do this.

It is recommended that you go to the fire department or the power supply bureau, before our factory has a direct buried cable, can not find the cable in the middle of which is a short circuit, the power supply bureau with a detection of instruments like minesweeping, to find out, to show you which short circuit, digging is really yes, you might as well try it. But it cost more than 5,000 to do that, not counting the dinner.

There are two factors for individual man-made, one is the human factor, the underground fire pipeline is a hidden project, and some engineering companies do not follow the specifications to construct when they are under construction, which leads to the reduction of the anti-corrosion and pressure resistance of the pipeline, so water leakage will occur if the service life is not reached. The second is natural factors, buried in the ground for a long time by the invasion of underground materials, for a long time, the interface aging, pipeline corrosion, will lead to water leakage. Of course, the two aspects are interrelated, and the human factor will lead to the strengthening or reduction of the influence of natural factors, which will accelerate or slow down the leakage of pipes.

It is more troublesome, find the valve, test the pressure of a break, you can also excavate in sections, see if the anti-corrosion layer is a lot of water, can you find it depends on your luck, 10 tons of water a day is still relatively large, it seems that the water company has that testing equipment, but the cost seems to be relatively high.

There is a kind of radar control equipment that can be used, that is, it is not cheap. This equipment can detect water leaks in the ground without excavation.