Hydrogen pipeline flame arrester

Model of hydrogen pipeline flame arrester：ZHQ-Q

productsummary:A hydrogen flame arrester is a safety device used to prevent the spread of hydrogen flames outward. It requires a solid material (flame retardant element) with many small channels or gaps that can pass through gas

The gaps or channels of flame arresters should be as small as possible, so when the flame enters the flame arrester, it is divided into many small flame streams by the flame arresters. Due to heat transfer (gas cooling) and wall effects, the flame stream is quenched.

Adopting four stainless steel flame retardant corrugated plates, two more than ordinary pipeline flame arresters, it has the characteristics of corrosion resistance and wear resistance.

Hydrogen pipeline flame arresterWorking principle：A flame arrester is a solid material composed of many small, uniform or non-uniform channels or pores that can pass through gas, and these channels or pores are required to be as small as possible,

As small asIt can be done through flames. In this way, the flame enters the flame arrester and is divided into many small flame streams that are extinguished. The mechanism by which flames can be extinguished is through heat transfer and wall effect.

（1）Heat transfer function:One of the factors that can prevent flames from continuing to spread and force them to extinguish is heat transfer. We know that flame arresters are composed of many small channels or pores,

WhenfireFlame enters hereAfter some small channels, it formsInto many small streams of flames. Due to the large heat transfer area of channels or pores, the temperature of the flame decreases after heat exchange through the channel walls to a certain extent

The flame of degreeIt is immediately extinguished. Conducted byExperiments have shown that when flame retardant is usedImprovement of thermal conductivity of equipment materials460When doubled, its extinguishing diameter only changes2.6%. This indicates that material issues are secondary. Heat transfer operation

To extinguish flamesOne reason, but not the main onereason. Therefore, for makingFor flame arresters used for explosion prevention, the choice of material is not too important. However, when selecting materials, they should be taken into consideration

Mechanical strength and corrosion resistanceWaiting for performance.

（2）Wall effect:According to the theory of combustion and explosion chain reaction, it is believed that the phenomenon of combustion and explosion is not the result of direct intermolecular interactions, but rather the result of external energy sources such as thermal energy, radiation energy, electrical energy, and chemical reactions

Can wait)The excitementRelease, causing molecules to splitFor highly reactive and short-lived free radicals. Chemical reactions are carried out by these free radicals. Free radicals interact with another molecule, resulting in the formation of products

Besides, it can also produceCreate new freedomJi. So free radicalsConsumption continues to generate new things in such a continuous manner. It is known that flammable mixed gases burn on their own (after starting to burn, there is no external energy source involved)

The condition is that the newly generated free base is equal toOr greater than the freedom to disappearBase number. Of course, spontaneous combustion is related to the conditions of the reaction system, such as temperature, pressure, gas concentration, container size and material, etc.

As the size of the flame arrester channel decreases, free radicals and antiHow many collisions between moleculesThe rate decreases accordingly, while the chance of free radicals colliding with the channel wall increases, which promotes a decrease in free radical reactions. When the channel ruler

When reduced to a certain value, this wall effect causes fireCannot continueThe condition is that the flame is prevented. From this, it can be seen that the wall effect is the main mechanism of flame retardancy in flame arresters. Starting from this point,

Design flame arresters with known structural forms to meet industrial needs.

Hydrogen pipeline flame arresterTechnical Parameter：

1Suitable for storing flash points below60Petroleum and chemical products stored at ℃, such as gasoline, kerosene, light diesel, toluene, etc.

2Working temperature≤80℃

3Shell material: carbon steel, aluminum alloy, stainless steel:SUS304、SUS304L、SUS316、SUS316L.

4Material of flame retardant core: stainless steel corrugated plate.

5Explosion proof level:BS5501: 11A、11B、11C.

Hydrogen flame arrester standardManufacturing and testing standards: according toGB5908-86、GB13347-92Standard execution.

Flange standard:HG20594-97P7PN1.0If the customer needs itGB、SH、HGJ、JB、ANSI、DIN、JISPlease indicate in the order contract when waiting for standards or changing pressure levels.

Hydrogen pipeline flame arresterRepair and maintenance：

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

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

3When 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.

4The 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.

5When 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.

6To ensure the performance of the 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.

Shanghai Nanshi is a professionalManufacturer of hydrogen pipeline flame arrestersThe products produced by the company include breathing valves, flame arresters, fire-resistant breathable caps, fire-resistant vacuum pressure caps, aluminum alloy ball valves, and aluminum alloy

Single flangeBall valve, oil discharge port, double door bottom valve, oil measuring hole and other supporting accessories.

Welcome to visit our website【http://www.shhxfcj.com】,If you have any questions.You can call us,WeWe will do our best to provide you with high-quality service.

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