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Explosion-proof structure type of LED explosion-proof lamp
Author: source: Datetime: 2018-08-18 14:47:01
One of the most important explosion-proof principles of LED explosion-proof lamps is to limit the temperature of the surface of the casing in contact with explosive gases, explosive dust, the surface of components or the surface of electronic components, and to limit the temperature of electrical contact surfaces below their minimum ignition temperature or ignition temperature. .
LED explosion-proof lamp, patent zone road sealing technology; more in line with national explosion-proof new technology. The utility model relates to an electrical device used in a special industry, which mainly solves the lighting problem, and comprises a lamp housing, a lamp cover disposed at the front end of the lamp housing, an illuminant and a battery disposed inside the lamp housing, and a switch disposed on the surface of the lamp housing, wherein the switch is characterized in that The illuminant is a high-power LED module, and a wide voltage input driving circuit is arranged between the illuminant and the battery; the wide voltage input driving circuit comprises a constant current chip, the constant current chip and the battery form a power module, and the LED module is connected On the constant current chip, the power module and the LED module are glued together; ultrasonic welding is performed between the lamp cover and the lamp housing.
It utilizes the characteristics of low heat generation of LED to achieve intrinsically safe explosion-proof, and the LED light source has a long service life; the battery maintains constant brightness at the end of full charge and discharge; the heat dissipation device is arranged on the lamp housing to achieve effective heat dissipation of the LED module It guarantees the stability of use and is suitable for lighting in various industries such as coal mine, petroleum, railway and flood control.
Applicable to hazardous areas in Zone 1, Zone 2, IIA, IIB, IIC explosive gas environment.
Applicable to hazardous areas in Zone 0 and Zone 21, IA, IB, IC explosive gas environment.
Explosion-proof structure of explosion-proof lamps shall be determined according to the regional grade and scope of the explosive gas environment. For example, explosion-proof lamps shall be used in Zone 1; fixed lamps in Zone 2 may be explosion-proof and increased in safety, and mobile lamps must be Explosion-proof type is adopted. The level or group of selected explosion-proof lamps should not be lower than the level and group of explosive mixtures in an explosive atmosphere. At the same time, the impact of the environment on the explosion-proof lamp should be considered, and the requirements of various environments such as ambient temperature, air humidity, corrosion or polluting substances should be met. The degree of protection and corrosion resistance of the luminaire should be selected according to different environmental requirements. Especially in the presence of corrosive gases in explosive atmospheres, it is important to choose a luminaire with appropriate corrosion protection.