Hydrogen flame arresting is a safety device used to prevent the flame from spreading from flammable gases and liquids and preventing tempering and causing an explosion. It is usually installed on pipelines that transport or discharge flammable and explosive gases. Such as torches, heating combustion systems, petroleum gas recovery systems or other flammable gas systems. Hydrogen flame arresting prevents the external flame from entering the equipment, pipes or flames that contain flammable and explosive gases or prevents the flame from spreading between the equipment and the pipeline.It is a safety device used to prevent the flame from spreading outwards. It consists of a solid material (fire-blocking element) that can pass through a gas and has many small passages or slits.
Hydrogen flame arresting is designed and manufactured based on the principle that the flame passes through the narrow pores of the heat conductor and is extinguished due to heat loss. The fire-retardant layer structure of the natural gas hydrogen flame arresting is a wire mesh type or a corrugated plate type. Applicable to flammable gas pipelines, such as gasoline, kerosene, light diesel oil, stupid, stupid, crude oil and other oil storage or torch system gas purification system gas analysis system coal mine gas emission system heating furnace fuel gas pipe network. The valve can be used together with the breathing, or can be used alone; the natural gas hydrogen flame arresting is mainly composed of a casing and a filter. The housing should have sufficient strength to withstand the impact pressure generated by the explosion. The corrugated fire retardant plate is fully supported by stainless steel, copper-nickel alloy, aluminum or aluminum. The corrugated flame arresting can block the violent flame of detonation and can withstand the corresponding mechanical and thermal effects, with low flow resistance and easy to clean and replace.
DN
Inch
Width L/mm
(1.6Mpa/1.0Mpa)
Height H/mm
(1.6Mpa/1.0Mpa)
25
1
135
190
50
2
190
230
80
3
220
250
100
4
240
270
125
5
280
290
150
6
330
330
200
8
385
370
250
10
450
400
Model
ZHQ-T/ZHQ-Q
Size
DN25-DN350 PN0.6-PN2.5
Body Material
CS 304 316 316L
Guide Rod
304 316 316L
Bolt /Nut
CS 304 316 316L
Gasket Seal
Graphite gasket
Medal gasket PTFE
Explosion Group
BS 5501:IIA IIB IIC
Ambient Temper
CS：-30℃~+350℃
SS：-80℃~+350℃
Joint Type
Flange Threaded
Flange Standard
JB GB HG ANSI SH JIS
Manufacture Standard
GB5908-86 GB/T13347-1992
Coating
CS: paint SS: NO Paint
Hydrogen flame arresting - generally installed at a position of about 5-10m from the combustion furnace, can be installed horizontally or vertically; the pipeline installed by the natural gas hydrogen flame arresting must be clean, free of impurities, dirt and other things blocking the fire-resistant core parts. The gap affects the normal use of the flame arresting. In order to ensure the fire retarding effect of the natural gas hydrogen flame arresting, it should be checked every six months. Check the fire barrier for defects such as blockage, deformation or corrosion. The blocked fire-retardant layer should be cleaned to ensure that each hole is unobstructed, and the fire-resistant layer that is deformed or corroded should be replaced. When cleaning natural gas hydrogen flame arresting core parts, it should be purged with high pressure steam, non-corrosive solvent or compressed air, and should not be brushed with sharp hardware. The fire resistance of the natural gas hydrogen flame arresting is regularly tested by 13 consecutive subsonic flame tests, in line with national standards; natural gas hydrogen flame arresting is shipped from the factory.
The sealing surface of the protective flange is not subject to wear, and the plastic protective cover of the inlet and outlet is matched. When the field is installed, the blue flange protective cover must be removed before installation. When re-installing the explosion-proof ribbed flame arresting, the gasket should be updated. Make sure the sealing surface is clean and free of damage and must not leak.
When ordering, please confirm the following parameters: 1, nominal diameter 2, working pressure 3, material 4 flange standard 5, medium, in order to provide you with the products that meet the requirements.
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