What is the principle of explosion-proof lamps?
According to the "non explosion-proof lamp electrical equipment part first for explosive environment: explosion-proof type and fire prevention requirements" concept and basic method, flameproof explosion-proof type is a kind of action to allow internal explosion and prevent flame detonation, is one of the most common type of explosion-proof. As the explosion-proof type of lamp housing is generally made of metal materials, good heat dissipation, high strength and durability of the shell, it is very popular with users. In addition, many types of flameproof lamps and lanterns, such as lampholders and interlock switches, also use flameproof structures. Electrical equipment with flameproof enclosure is called flameproof electrical equipment. If the explosive gas mixture enters the flameproof enclosure and is ignited, the flameproof enclosure can withstand the explosion pressure of the internal explosive gas mixture and prevent the internal explosion from spreading to the explosive mixture around the shell. This is a gap explosion-proof principle, propagation and cooling of explosion products using metal gap can prevent explosion flame temperature of flame out and cooling, a structural design principle of explosion suppression expansion.
According to the explosion-proof type of explosion-proof, increased safety type, pressure type, no spark and dust explosion in a total of 5 main types, and also by other types of explosion-proof and the various types of explosion-proof combination or composite type and special type.The most commonly used: flameproof explosion-proof type is a kind of action to allow internal explosion and prevent flame detonation, the explosion-proof lamp shell type is generally used metal materials, good heat dissipation, high strength and good durability of shell.
Simple said that there is a certain sealing, have a certain strength, have a certain resistance, is the first brand Chinese dawn explosion-proof equipment factory, is now bankrupt, private brand is called the new dawn, there are a lot of explosion-proof lamp factory, some poor quality, no way China characteristics.
