Detailed structure of explosion proof lamp
Case fastenerBolted flameproof housings come in two sizes: flat and spigot. For the plane structure, the bolt not only works on the fastening, but also ensures the clearance of the plane. The stop structure, when the flameproof surface only consider the cylindrical part, only a bolt fastening; when the flameproof surface need to consider the cylinder and plane, bolt not only fastening operations, and ensure the plane part clearance. When tapping on the housing must pay attention to: try not to screw fasteners through the flameproof enclosure, through the shell holes at the bottom of the left should be more than 3mm of the margin; for the flameproof enclosure in the use of Aluminum Alloy light alloy materials, because Aluminum Alloy strength is low, therefore, often open (such as the need to replace the light source open) flameproof use screw fastening the housing, should not be directly tapping in Aluminum Alloy shell, a locking screw thread should be buried steel sleeve through pre screw to increase the strength, and to prevent failure due to thread rotten teeth does not require the user to replace the light source; or repair when opened, and the factory the bolt is installed, can directly attack the fastening screw on the shell, but not the use of fine thread, try to use the coarse thread, and have enough to meet the requirements of meshing buckle fastening.In short, in the design of shell fasteners, should first distinguish the flameproof enclosure in the role, is only fastening, or both fastening but also guarantee the plane gap, and then determine the maximum axial load of the bolt with the appropriate bolt.
The explosion-proof lamp is used for dangerous places exist combustible gas and dust, to prevent the lamp may produce arc, spark ignition and high temperature surroundings of combustible gas and dust, so as to achieve the requirements of explosion-proof lamps. Also known as explosion-proof lamps, explosion-proof lighting. Different flammable gas mixture environment has different requirements for explosion proof grade and explosion proof form of explosion proof lamp. Refer specifically to GB3836, IEC60079.Explosion-proof structure type explosion-proof lamp, according to the regional level of explosive gas environment and the scope of the decision, such as the 1 area must use explosion-proof lighting; 2 area fixtures can be used flameproof and increased safety type, mobile type lamp must adopt flameproof. The grades or groups of selected explosive lamps shall not be lower than the explosive mixture levels and groups in the explosive environment. At the same time, to consider the impact of the environment on the explosion-proof lamp, should meet the environmental temperature, air humidity, corrosion or polluting substances and other environmental requirements. According to different environmental requirements, choose the protection level and anti-corrosion level of lamps. Especially when there is corrosive gas in explosive gas environment, it is very important to choose lamps with corresponding corrosion resistance.
There are too many types of explosion proof lamps. Which type are you asking?For example: flameproof explosion-proof lamp, explosion-proof lamp, increased safety explosion-proof lamp, explosion-proof fluorescent lamp, explosion-proof floodlights, explosion-proof lights, explosion-proof, explosion-proof flashlight, emergency lamp, explosion-proof explosion-proof acousto-optic alarm lamp, explosion-proof lamp, explosion-proof explosion-proof ballast platform, electronic anti explosion lamp and trigger explosion-proof apperture lamp, explosion-proof lamp etc.For example, explosion-proof lamp is composed of three parts: explosion proof lamp, lamp pole and pedestal. The base is equipped with special ballast for wiring box or street lamp. Light source type and power: self ballasted mercury lamp, incandescent lamp, outer town mercury lamp and metal halide lampReference: China explosion-proof network
