Explosion proof lamps refer to lamps used in hazardous areas where flammable gases and dust exist, which can prevent the possible generation of arcs, sparks, and high temperatures inside the lamp from igniting flammable gases and dust in the surrounding environment, thereby achieving explosion-proof requirements. Also known as explosion-proof lamps, explosion-proof lighting fixtures. Different combustible gas mixture environments have different requirements for the explosion-proof level and form of explosion-proof lamps. (Refer to GB3836 and IEC60079 for details.). ）

1. Environmental characteristics

Gas explosion prevention: It involves the presence of flammable gases or vapors, and factors such as gas concentration, oxygen concentration, and the possibility of generating electric sparks need to be considered.

Dust explosion prevention: For environments with combustible dust, attention should be paid to factors such as dust concentration, particle size, flammability properties, and possible dust accumulation.

2. Explosion mechanism

Gas explosion prevention: Gas explosion is mainly based on the mixture of gas and oxygen, forming explosive conditions within the range of combustible gases.

Dust explosion prevention: Dust explosion is caused by the suspension of dust in the air within a certain concentration range, forming a combustible dust cloud, and then exploding under the action of an ignition source. I

3. Control strategy

Gas explosion prevention: Controlling gas explosion prevention mainly involves limiting gas concentration and oxygen concentration, while avoiding situations such as electric sparks that may ignite the gas.

Dust explosion prevention: Controlling dust explosion prevention requires reducing or avoiding the accumulation of dust, avoiding the formation of dust clouds, and preventing dust from encountering ignition sources.