How to freeze fire hoses and sprinkler heads?

Normal northern sprinkler systems need some anti-freezing measures. In the vast southern region, the temperature is getting lower and lower. As the problems caused by the freezing of fire sprinkler heads emerge in an endless stream, let everyone know how to deal with the freezing of fire pipes and the freezing of sprinkler heads.

Everyone will ask, if the temperature is so low, will the fire sprinklers freeze?

The answer is yes. Minus 5 degrees or less there is a risk of the cracking, sometimes not to minus 5 degrees, but also crystal water pipe bursting head. Therefore, we must pay attention to antifreeze in the cold winter.

So how can the fire sprinkler head freeze?

1. Turn off the damaged sprayer area and indicate the front load check valve.

2. Discharge the pipe network of the area under the jurisdiction of the water flow indicator (fill the water with the system's most remote test device);

3 , replace the nozzle;

4. Open the stop valve and fill it with water to see if there is any leakage and no leakage is OK .

How to prevent the sprinkler head from freezing?

Based on a GB50084 2017? W sprinkler systems specifications set count "requirement, the ambient temperature should not be lower than the wet system 4 degrees. Sprinklers can leak or misreport at temperatures below 0 degrees.

The following methods can be used to prevent the freezing of fire sprinklers:

First, the sprinkler system can be changed to a dry or pre-action system. If the temperature is not constant, the temperature can be kept warm (but the power consumption is large). In addition, the nozzles must be replaced with fusible alloys.

2. In the construction project, please be sure to empty the remaining water in the pipe network. Do not enter the water in the pipe network that is not in the water.

Third, the project has been used to ensure that the sprinklers cold insulation, so that the ambient temperature is higher than 4 degrees.

Fire protection pipe antifreeze measures for basement

1 , in the pipeline insulation layer is one of the necessary means, but this can not completely prevent the freezing. There is no way to install a drain valve at the end of the pipeline to maintain the long flow of water.

2. Conditional units will install electric heating systems for fire-fighting pipelines. The disadvantage is that investment and subsequent costs are not small.

3 , conditional units can also be connected to a separate heating pipe, and in the fire pipe, and marked with insulation. Although the cost is not small, nor do they know that the law does not conform to regulations, the advantage is that it will provide one-time benefits for investment.

4. If the access of fire-fighting pipeline can be passed indoors, a valve can be added to cut off the flow. Then add some solid antifreeze in the follow-up pipeline. After connecting the water pipe, close the access valve. External insulation, antifreeze, basically will not freeze.

Fire safety Fire protection responsibility is more important than Mount Tai. No matter what measures are taken, fire facilities must be kept in good condition.

The information in this article comes from the Internet and was reorganized and edited by China Rescue Equipment Network.