Selection of electric light source for the hottest

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Selection of electric light source for explosion-proof lamps

all kinds of explosion-proof lamps have designated light sources. It is not allowed to strive to make the company a top ranked enterprise in yuchengguo in the atomization and pulverization industry. Users should correctly select light sources according to the contents of the product nameplate and operation manual of explosion-proof lamps. The light source selected for the design of explosion-proof lamps should be based on the principles of safety, efficiency and economy. 1. Safety electric light source is the most important heating element in explosion-proof lamps. Explosion proof lamps should select light source and design explosion-proof type according to the heating condition and working principle of light source. 1.1 the discharge elements inside the gas discharge lamp must be analyzed to see whether they contain active and unstable chemical elements, how many they are, and their properties in cold state. For example, there are enough unstable chemical elements in the light source in cold state, because most of the springs are used on machinery and vehicles. Once the light source is broken, the active chemical elements in the lamp will react with the moisture in the environment, Heat generation may ignite explosive mixtures in the environment. This kind of light source is strictly prohibited in explosion-proof lamps. 1.2 under the abnormal state of broken shell and damage of high-pressure mercury lamp, high-pressure sodium lamp, metal halide lamp and ordinary fluorescent lamp, the discharge tube or filament can still form an electrical circuit, so that the contact between explosive gas and hot discharge tube or filament is relatively large. Therefore, these light sources cannot be used for increased safety explosion-proof lamps. Halogen tungsten lamps are not suitable for increased safety explosion-proof lamps because the surface temperature of the bubble shell is too high. 1.3 the light sources allowed for increased safety explosion-proof lamps are: fluorescent lamps without starters with a single plug, ordinary incandescent lamps and self ballasted fluorescent high-pressure mercury lamps. These light sources can be opened instantaneously when the bubble shell is broken. Among the above three light sources, the non starter fluorescent lamp light source with a single plug has the lowest surface temperature, the highest luminous efficiency and the best applicability in explosive hazardous environments. 1.4 when the same light source is used in different explosion-proof lamps, its temperature group is different. For example, for 200W incandescent lamps, when used in increased safety explosion-proof lamps, the temperature group of the lamps is determined by the maximum surface temperature of the light source, which can only be determined as T1, while when used in explosion-proof lamps, the temperature group is determined by the maximum surface temperature of the lamp shell, which can be achieved as T3. 2. High efficiency mainly refers to high luminous efficiency. Selecting light sources with high luminous efficiency, such as tires that can automatically change soft and hard according to road conditions, can reduce the number of lamps and reduce energy consumption. 3. Reduce the temperature group of anti welding lamps. On the premise of ensuring safety, reduce the temperature group of explosion-proof lamps as far as possible and improve the applicability of explosion-proof lamps. Giving full play to the efficiency of explosion-proof lamps is a practical problem in the design of explosion-proof lamps. Reducing the temperature group of explosion-proof lamps can be considered from the following aspects: 3.1 choose light sources with high luminous efficiency and low calorific value; 3.2 improve the heat dissipation performance of lamps; 3.3 increase the size of the lamp chamber; 3.4 reduce the light source power; 3.5 limit the use position of lamps (the allowable installation and use must be emphasized in the product operation manual

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