The working principle of imported flame arrester:
On the principle of flame arresters, at present, there are mainly two kinds of Views: one is based on the heat transfer effect; one is based on the wall effect.
1 heat transfer effect
Burning need is one of the necessary conditions to reach a certain temperature, namely the ignition point. Below the ignition temperature, combustion will stop. According to this principle, as long as the burning material temperature drop to its burning temperature, can prevent the spread of flame. When the flame by
The fire element of many tiny channels will be turned into a number of small flame. Design of the flame arrester internal fire element, as far as possible to enlarge the tiny flame and the channel wall contact area, enhanced heat transfer, so that the flame temperature to drop below ignition temperature, thereby preventing the spread of flame.
2wall effect
Combustion and explosion not intermolecular direct response, but by the foreign energy excitation, molecular bond destruction, to produce activated molecules, activation of molecular and split into life is short but very reactive radical, free radicals and other molecules collide, the generation of new products, but also produce a new radical then continue with other molecules react. When the burning gas through the fire element in the narrow channel, free radical and the channel wall collision probability increases, participate in the reaction of free radicals to reduce. When the flame arrester of narrow channels to a certain extent, free radicals and wall collisions dominate, because free radicals sharply reduced, reaction does not continue, namely the combustion reaction can continue to spread through the flame arrester.
Imported flame arrester main performance:
1, burst resistance performance standard,13 consecutive burst resistance performance test each can stop the fire.
In 2, fire resistant performance of qualified, fire resistant test for 1 hours without tempering phenomenon.
3, casing hydrostatic test qualified. Reasonable structure, light weight, corrosion resistance. Easy maintenance, convenient installation. Flame arrester core made of stainless steel, corrosion resistance and easy cleaning.
The main use of imported flame arrester:
In 1, delivery of combustible gas pipeline.
In 2, the torch system.
In 3, oil and gas recovery system.
4, furnace fuel gas pipe network.
5, gas purification system Tonghua.
6, gas analysis system.
7, coal mine gas drainage system.
8, flammable solvent systems ( such as the reaction vessel and tank vent. ).
Repair and maintenance of imported flame arrester
1, in order to ensure the performance of the flame arrester to reach the purpose of use, the installation of flame arresters, it must carefully read the manufacturer instructions.
2, Zuhuo 's flow marking must be consistent with the direction of medium.
3, should be inspected once every half a year. Check the fire resistant layer is blocked, deformation or corrosion defects.
In 4, the blocked fire resistant layer should be cleaned, to guarantee each pore is unblocked, for deformation or corrosion of fire resistant layer should be replaced.
5, clean flame arrester core parts, should use high pressure steam, non-corrosive solvent or compressed air purge, the hardware should not be used sharp brushing.
6, re-install the fire resistant layer should be updated, gasket and confirm the sealing surface has been cleaned and no damage, no leakage.
