All kinds of explosion-proof electrical lamps and lanterns have designated light sources, which are not allowed to be changed at random. The user should use the light source according to the nameplate of the explosion-proof electrical lamps and the contents of the instruction manual. Explosion-proof electrical lighting design light source should be based on the principle of safety, efficiency and economy.
1. The safety electric light source is the most important heating element in the explosion-proof electrical lamps. The explosion-proof electric lamps and lanterns should be selected according to the heat source and working principle of the light source, and the explosion-proof type should be designed.
1.1 The internal discharge elements of a gas discharge lamp must be analyzed to determine whether it contains chemical elements that are active and unstable in nature, how many are present, and the properties under cold conditions, such as the presence of a sufficient number of unstable chemical elements in cold light sources. Once the light source is broken, the active chemical elements in the light bulb react chemically with the moisture in the environment, generating heat that may ignite the explosive mixture in the environment. This type of light source is strictly prohibited in explosion-proof electrical lighting.
1.2 In the abnormal state of damaged shells, the high-pressure mercury lamps, high-pressure sodium lamps, metal halide lamps, and ordinary fluorescent lamps can still form electrical circuits, so that the explosive gas and the hot discharge tubes or filaments are in direct contact with each other. Larger, therefore, increased safety explosion-proof electrical lamps can not use these light sources.
Tungsten-tungsten lamps are not suitable for increased safety explosion-proof electrical lamps due to the high temperature of the bulb surface.
1.3 Increased safety explosion-proof electrical lamps The types of light sources that can be used are: non-starter fluorescent lamps with a single plug, ordinary incandescent lamps, and self-ballasted fluorescent high-pressure mercury lamps. These light sources are broken in the case of a blister. Instantly open circuit. Among the above three kinds of light sources, the non-starter fluorescent light source with a single plug has the lowest surface temperature and the highest light efficiency, and has the best applicability in explosive hazardous environments.
1.4 The same light source, used in different explosion-proof lamps, the temperature group is different. For 200w incandescent lamps, used in the increased safety explosion-proof electrical lamps and lanterns, the maximum temperature of the light source to determine the lamp temperature group, generally can only be set as T1, and used in explosion-proof explosion-proof electrical lamps, The maximum surface temperature of the lamp housing is set at the temperature group and it is possible to achieve T3.
2. High-efficiency and high-efficiency mainly refer to high luminous efficiency. Selecting a light source with high luminous efficiency can reduce the number of lamps used and reduce energy consumption.
3. To reduce the temperature range of the solder-proof lamps and lanterns, under the premise of ensuring safety, the temperature class of the explosion-proof electrical lamps and lanterns should be reduced as much as possible, and the applicability of the explosion-proof electrical lamps and lanterns should be improved. Giving full play to the performance of explosion-proof electrical lamps and lanterns is a more practical problem in the design of explosion-proof electrical lamps and lanterns.
To reduce the temperature group of explosion-proof electrical lamps, consider the following aspects:
3.1 Select a light source with high luminous efficiency and low calorific value;
1. The safety electric light source is the most important heating element in the explosion-proof electrical lamps. The explosion-proof electric lamps and lanterns should be selected according to the heat source and working principle of the light source, and the explosion-proof type should be designed.
1.1 The internal discharge elements of a gas discharge lamp must be analyzed to determine whether it contains chemical elements that are active and unstable in nature, how many are present, and the properties under cold conditions, such as the presence of a sufficient number of unstable chemical elements in cold light sources. Once the light source is broken, the active chemical elements in the light bulb react chemically with the moisture in the environment, generating heat that may ignite the explosive mixture in the environment. This type of light source is strictly prohibited in explosion-proof electrical lighting.
1.2 In the abnormal state of damaged shells, the high-pressure mercury lamps, high-pressure sodium lamps, metal halide lamps, and ordinary fluorescent lamps can still form electrical circuits, so that the explosive gas and the hot discharge tubes or filaments are in direct contact with each other. Larger, therefore, increased safety explosion-proof electrical lamps can not use these light sources.
Tungsten-tungsten lamps are not suitable for increased safety explosion-proof electrical lamps due to the high temperature of the bulb surface.
1.3 Increased safety explosion-proof electrical lamps The types of light sources that can be used are: non-starter fluorescent lamps with a single plug, ordinary incandescent lamps, and self-ballasted fluorescent high-pressure mercury lamps. These light sources are broken in the case of a blister. Instantly open circuit. Among the above three kinds of light sources, the non-starter fluorescent light source with a single plug has the lowest surface temperature and the highest light efficiency, and has the best applicability in explosive hazardous environments.
1.4 The same light source, used in different explosion-proof lamps, the temperature group is different. For 200w incandescent lamps, used in the increased safety explosion-proof electrical lamps and lanterns, the maximum temperature of the light source to determine the lamp temperature group, generally can only be set as T1, and used in explosion-proof explosion-proof electrical lamps, The maximum surface temperature of the lamp housing is set at the temperature group and it is possible to achieve T3.
2. High-efficiency and high-efficiency mainly refer to high luminous efficiency. Selecting a light source with high luminous efficiency can reduce the number of lamps used and reduce energy consumption.
3. To reduce the temperature range of the solder-proof lamps and lanterns, under the premise of ensuring safety, the temperature class of the explosion-proof electrical lamps and lanterns should be reduced as much as possible, and the applicability of the explosion-proof electrical lamps and lanterns should be improved. Giving full play to the performance of explosion-proof electrical lamps and lanterns is a more practical problem in the design of explosion-proof electrical lamps and lanterns.
To reduce the temperature group of explosion-proof electrical lamps, consider the following aspects:
3.1 Select a light source with high luminous efficiency and low calorific value;
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