The selection of explosion-proof lamps should be selected according to the category and regional level of the hazardous location, as well as the level and group of the mixture that exists in the location.
(1). Lighting equipment suitable for zone 0
The lighting fixtures specially designed for zone 0 are still blank in my country. Now we are developing a special explosion-proof flashlight with oil-filled light source cavity and intrinsically safe battery cavity. Its explosion-proof principle is to prevent the flashlight from being damaged by accidental impact, collision, and drop, and the light source cavity and the electric bead bulb are damaged at the same time. In foreign countries, there is a lighting fixture with explosion-proof light guide tube specially used in zone 0. The explosion-proof lamps are placed outside the 0 zone, and the light tube is used to guide the light of the explosion-proof lamps into the zone 0 place.
(2). Explosion-proof lamps suitable for zone 1
In Zone 1, explosion-proof, increased safety, positive pressure, composite and special explosion-proof lamps designed for zone 1 should be selected.
In the current explosion-proof regulations in my country, some of the increased-safety explosion-proof lamps are classified as only suitable for use in Zone 2, which is mainly based on the higher maintenance requirements of the increased-safety type and the poor maintenance level in the actual use of factories and mines in my country. proposed.
(3). Explosion-proof lamps suitable for zone 2
In Zone 2, in addition to the explosion-proof lamps used in Zone 0 and Zone 1, there are also non-sparking explosion-proof lamps specially designed for Zone 2.
In dangerous places, most of the areas can be divided into 2 areas. The 2 area has the characteristics of large area, good air circulation, and relatively small probability of dangerous gas accumulation reaching the limit. High-intensity gas discharge lamps are used abroad as light sources. Spark-type lamps have been widely adopted.
(4). Dust explosion-proof lamps suitable for zone 10
In zone 10, dust explosion-proof lamps with dust-tight enclosures must be used.
(5). Dust explosion-proof lamps suitable for 1l area
In Zone 11, dust explosion-proof lamps with dust-tight enclosures can be used. In dust explosion-hazardous places with only combustible non-conductive dust mixtures, dust-explosion-proof lamps with dust-proof enclosures are allowed.
