LED explosion-proof platform light is a kind of explosion-proof light. It has good waterproof, dustproof, anti-corrosion and explosion-proof properties. It is suitable for power plants, power stations,
It is used as fixed lighting in flammable and explosive places such as coal mining, petrochemical industry, iron and steel metallurgy, military reserves, and railways. LED explosion-proof platform light
The basic safety requirement is to enable the light source to be used safely and reliably in explosive environments. For this reason, we must first consider the performance of the lamp’s casing
The shell of explosion-proof lamps generally includes: lamp housing, transparent parts, protective nets, fasteners, cable entry devices, sealing rings and other components.
The main functions of the protective shell of explosion-proof lamps include: preventing electrical components from being damaged by man-made or accidental external forces during normal operation, resulting in electrical fires.
The generation of flowers; prevent the shell itself from generating sparks due to impact or static friction; prevent foreign matter and water from entering the cavity and destroying the electrical insulation; prevent misoperation
The protective function of the shell accidentally disappears due to
certain protective functions
Explosion-proof lamp – intermediate part
Therefore, in order to meet the functional conditions of explosion-proof lamps, the protective shell of LED explosion-proof platform lamps usually must have the following requirements:
1. Anti-foreign body impact capability The shell components of LED explosion-proof platform lights must withstand impact tests without being damaged. Portable lamps must also be able to withstand the transparent part of the lamp pointing downwards.
, free drop test from a height of 1 meter without damage.
2. Transparent parts Any LED explosion-proof platform lamp must use transparent parts. In order to have a higher light transmittance, the wall thickness of the transparent parts cannot be made very thick. material of transparent parts
The material strength is always much lower than that of metal materials, especially glass, which is the weakest link in the protective shell parts and should be paid special attention to.
3. Transparent parts should be made of glass or other materials with stable chemical and physical properties. Transparent parts made of plastic must meet the requirements for transparent parts.
Requirements for thermal stability and anti-static surface electricity of plastic enclosures.
4. In addition to withstanding the specified impact test, transparent parts must also be able to withstand drastic changes in hot and cold tests. Place the lamp at the position where the transparent part reaches the highest surface temperature
Light up at the highest ambient temperature. After the temperature rise of the lamp stabilizes, spray cold water of about 10°C onto the surface of the transparent part at the highest temperature. The transparent part should not be damaged.
Transparent parts will expand when heated during operation. Once exposed to cold water spray, the transparent parts will shrink due to rapid cooling. Each part will be cooled differently
And produce shrinkage inconsistency. If the transparent parts do not have sufficient strength or there is residual damage stress between the molecules, it will accelerate the increase of the stress between the molecules and lead to transparency
damage to parts.
Explosion-proof lights – high-strength anti-glare glass
5. In order to improve the strength of transparent glass parts, tempering is generally used to increase the prestress between glass molecules. Glass tempering can heat the formed glass to close to
The softening point is formed by rapid and uniform cooling. It can also be tempered by chemical treatment on the glass surface. Since the stability and uniformity of the tempering process is difficult to control, the same batch
Transparent parts may have hidden dangers such as uneven prestressing and stress concentration.
It can be seen that the outer shell of LED explosion-proof platform lamps must use a high-strength protective net to prevent external impact and protect the good light transmittance of transparent parts. The shell can
Made of copper-free aluminum alloy die-casting, the surface is sprayed with high-temperature electrostatic plastic, and each joint surface is sealed accordingly to ensure that the product is well waterproof, dustproof, and anti-corrosion.
Anti-electrical ignition performance