Principle of LED explosion-proof light
The principle of LED explosion-proof light is the same as that of explosion-proof light. Non-electrical equipment Part 1: Basic methods and requirements” explosion-proof concept and fire-proof type, explosion-proof type is an explosion-proof type that takes measures to allow internal explosion and prevent flame propagation, and is the most commonly used explosion-proof type. Since the shell of this type of explosion-proof lamp is generally made of metal material, it has good heat dissipation, high shell strength and good durability, and is very popular with users. Moreover, many components of increased safety explosion-proof lamps, such as lamp sockets, interlock switches, etc., also use explosion-proof structures. Electrical equipment with flameproof enclosures is called flameproof electrical equipment. If an explosive gas mixture enters the flameproof enclosure and is ignited, the flameproof enclosure can withstand the explosion pressure of the explosive gas mixture inside and prevent the internal explosion from propagating to the explosive mixture around the enclosure. This is a gap explosion-proof principle, that is, a structure designed on the principle that the metal gap can prevent the spread of the explosion flame and cool the temperature of the explosion product, achieve flame extinguishing and cooling, and suppress the expansion of the explosion.
Notes on the use of LED explosion-proof lights
1. Before closing the cover, apply a damp cloth (not excessively wet) to wipe lightly Lamp back light and transparent parts to improve the light efficiency of lamps. A thin layer of 204-1 replacement type anti-rust oil should be applied on the flameproof joint surface, and attention should be paid to whether the sealing ring plays a sealing role in the original position when closing the cover.
2. After opening the cover, check whether the flameproof joint surface is in good condition, whether the rubber seal becomes hard or sticky, whether the wire insulation layer is green and carbonized, whether the insulation and electrical Component for deformation and scorch marks. If these problems are found, they should be repaired and replaced in time.
3. If the light source is damaged, turn off the light in time and notify the replacement, so as not to cause the electrical components such as the ballast to be in an abnormal state for a long time due to the failure of the light source to start.
4. If there is accumulated water in the lamp cavity of lamps and lanterns used in humid environments, they should be removed in time, and the sealing parts should be replaced to ensure the protective performance of the shell.
5. When opening the lampshade, the cover should be opened after power off according to the requirements of the warning sign.
6. Check whether the transparent parts have been impacted by foreign objects, and whether the protective net is loose, desoldered, corroded, etc. If so, stop using it and repair and replace it in time.
7. Regularly remove dust and dirt on the shell of explosion-proof lamps to improve the light efficiency and heat dissipation performance of lamps. The cleaning method can be sprayed with water (above the mark on the lamp) or wiped with a damp cloth according to the protective ability of the lamp shell. When cleaning with water spray, the power supply should be cut off, and it is strictly forbidden to wipe the plastic shell (transparent part) of the lamp with a dry cloth to prevent the generation of static electricity.
8. The sealed part of the lamp should not be disassembled and opened frequently.
