Gravel flame arresters are safety devices used to prevent the spread of hydrogen flames outward. It is composed of a solid material (flame retardant element) that can pass through gas and has many small channels or gaps. The gap or channel of the flame arrester element is required to be as small as possible. Therefore, when the flame enters the flame arrester, it is divided into many small flame streams by the flame arrester element. Due to heat transfer (gas cooling) and wall effect, the flame stream is quenched.

 

Principles for maintenance and upkeep of gravel flame arresters

 

Principles for maintenance and repair of gravel flame arresters

 

1) To ensure the performance of the gravel flame arrester meets its intended use, it is necessary to carefully read the instructions provided by the manufacturer before installing the flame arrester, and carefully check whether the label is consistent with the requirements of the installed pipeline.

 

2) The flow direction mark on the flame arrester must be consistent with the flow direction of the medium.

 

3) It should be checked every six months. Check whether the fire-resistant layer has defects such as blockage, deformation, or corrosion.

 

4) The blocked fire-resistant layer should be cleaned thoroughly to ensure that each hole is unobstructed, and any deformed or corroded fire-resistant layer should be replaced.

 

5) When cleaning the flame arrester core components, high-pressure steam, non corrosive solvents, or compressed air should be used for blowing, and sharp hardware brushes should not be used.

 

6) When reinstalling the fire-resistant layer, the gasket should be updated and the sealing surface should be confirmed to be clean and undamaged, without any air leakage.