Songbei QA | What are the basic requirements for explosion-proof light?

Q: What are the basic requirements for explosion-proof light?

A:

The explosion-proof form of explosion-proof lights is mainly in the product structure, with a certain explosion-

proof joint surface or explosion-proof thread, through a whole explosion-proof shell, to withstand the explosion 

pressure of the explosive mixture that may be generated inside the light , the well prevents the explosion to the 

surrounding explosive mixture to achieve the purpose of explosion protection.

For flameproof light, the flameproof shell is the key component of the flameproof explosion-proof electrical 

equipment, so the flameproof shell must meet the general requirements and the special lamps of the flameproof 

explosion-proof lights and lanterns must meet the general requirements of ordinary lights.

   1. The shell shape of the light strives to be beautiful and generous, the structure is compact and reliable, the 

       light weight and the craftsmanship are better.
   2. Sufficient volume is required to place electrical components such as light sockets, light bulbs, reflectors, 

       binding posts, and lighting accessories. At the same time, the rationality of the layout should be considered, 

       which is convenient for installation, replacement of light sources, and other use and maintenance.
   3. There must be a transparent part with a certain surface area, so that the luminous flux of the light source 

       inside the light can be effectively projected through the reflective part.
   4. Comprehensively consider measures such as heat dissipation, dustproof, waterproof and anti-corrosion, and 

       give sufficient guarantee in structure.
   5. In the appropriate position, the internal and external grounding shall be arranged reasonably, and there shall 

       be corresponding permanent grounding signs.

The China national explosion-proof standard of flameproof enclosure requires that it can withstand the explosion 

pressure of the internal explosive gas mixture and prevent the internal explosion flame from spreading to the 

explosive mixture around the enclosure; to meet this performance, the following special requirements must be 

specifically considered:

   1. Anti-explosion performance. The shell of the light is required to have sufficient strength and rigidity to withstand the explosion pressure that may be caused by the inner cavity of the light. Therefore, appropriate materials and wall thicknesses should be selected to form the best three-dimensional geometric shape distribution. This cavity structure must be beautiful. Be generous, and try to avoid uneven stress caused by excessive shape changes, so as to ensure that it can finally pass the dynamic strength test specified in GB3836.2.

   2. Explosion-proof function. The flameproof shell of the light must be designed in strict accordance with the provisions of GB3836.2 to select the appropriate flameproof joint surface structural parameters, the way of introducing the device, the sealing structure of the transparent part and the light body parts, and the flameproof joint surface roughness. , The accuracy of the flameproof thread, etc., in order to effectively prevent the internal explosion flame from spreading to the explosive mixture around the shell, and finally pass the flameproof performance test specified in GB3836.2.

   3. For IIC flameproof lights, GB3836.2 strictly stipulates that the plane flameproof joint surface whose flameproof gap tends to increase during explosion should not be used. For this reason, most of the flameproof IIC explosion-proof lights in our country use flameproof The structure of the thread is used, so that the light cavity can be opened smoothly when the light is replaced or repaired.

 
The explosion-proof explosion-proof lamp produced by Songbei Explosion-proof Electrical Appliances is made of aluminum alloy die-casting with high strength; the surface is high-voltage electrostatic spraying, which has strong corrosion resistance and light structure. Suitable for various installation methods.