The Conduit Fire arresters, also known as fire extinguishers, are used to prevent external flames from entering equipment and pipelines containing flammable and explosive gases or to prevent flame from spreading between equipment and pipelines. It is a safety device used to prevent the outward spread of hydrogen flame, and is composed of a solid material (flame retardant element) that can pass through the gas and has many small channels or gaps. The pipeline explosion-proof flame arrester is a safety device used to prevent the flame spread of flammable gas and liquid and prevent the explosion caused by backfire. It is usually installed on the pipeline for conveying or discharging flammable and explosive gases. Such as flare, heating and combustion system, petroleum gas recovery system or other Flammable gas system.
The pipe flame arrester is a safety device to prevent the spread of flammable gas or flammable liquid vapor flame, which allows gas to pass but does not allow flame to pass.
It was initially used in the petroleum industry, and later widely used in mining, coal mining, water transportation and chemical industries.
Mainly composed of shell and filter element, it is the main component to prevent flame spread. According to the type of filter element, it can be divided into filling flame arrester, plate and frame flame arrester and metal. Grid frame lightning arrester, corrugated frame lightning arrester, liquid sealed frame lightning arrester, etc.
Taking a typical corrugated flame arrester as an example, its filter element is composed of stainless steel corrugated belt and flat belt rolled into a disc. Its fire resistance only depends on the triangular cross-section formed. Depends on the waveform of the filter element. Size and thickness of the filter element.
As the flame passes through the filter element, the holes in these triangular cross sections are divided into several smaller flames. This increases the contact area between the flame and the channel wall, enhances heat transfer, and reduces the flame temperature below the flash point. This will prevent the flame from spreading.
In addition, the wall effect increases the probability of collision between free radicals and the channel wall when combustible gases pass through the narrow channel of the fire element, and reduces the free radicals involved in the reaction.
If the channel of the pipe flame arrester is narrow to a certain extent, the collision between free radicals and the channel wall is dominant, and the number of free radicals decreases sharply, thus inhibiting the spread of flame to unburned gas.
Installation position of pipeline flame arrester_ gas pipeline flameproof check valve:
1. Transporting mixed gas pipelines that may cause deflagration or detonation;
2. Transporting gas pipelines that can decompose by themselves and cause explosion and flame spread;
3. The pipeline of combustible gas connected with open flame equipment after decompression (water seal device can be set in special cases);
4. The vent pipe before entering the flare head.
matters needing attention:
Before installing the flame arrester, the dust removal pipe shall purge the accumulated dust and cut the pipe according to the size of the flame arrester. Use crane and other auxiliary equipment for installation, and fix the lifting rope or Bracket Etc.
Preparation before construction:
1. Prepare construction tools: plasma cutting machine, polishing electromechanical welding machine, pliers, wrench, screwdriver, pneumatic drill, hand drill, etc.
2. Prepare the climbing rope, cap and gloves.
3. Provide construction personnel with operation certificates.
4. Lease scaffold and crane.
5. Measure and record the average wind speed of three dust removal pipes.
The installation of explosion-proof valve can effectively prevent explosion propagation, protect adjacent workshops or equipment, and avoid secondary explosion or multiple explosion.
Our main products include one-way flameproof valve, flameless venting device, pipeline spark detector, venting disc, flame arrester and other security products, which can provide installation and technical consultation.
