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The use environment and explosion-proof principle of Led explosion-proof lamp

Time:2022-04-11 Views:0

LED explosion-proof lamp is a kind of explosion-proof lamp. Its principle is the same as that of explosion-proof lamp, except that the light source is LED. It refers to various special measures to prevent surrounding explosive mixtures, such as explosive gas environment, explosive dust environment, gas environment, etc. . It is currently the most energy-saving explosion-proof lamp, widely used in oil fields, power plants, chemical enterprises, petroleum institutions, etc.

    LED explosion-proof light application products are difficult to dissipate heat, and the heat dissipation cost is kept at about 5%. The actual heat dissipation design is simple. heat dissipation path. This cost is mainly in the structure, the structural design of the lamp accounts for about 20%, and the cost for heat dissipation is not much. How to make the structural design more innovative and rational is a major problem that needs to be solved urgently. Whether it is an ordinary LED explosion-proof lamp or a high-voltage LED explosion-proof lamp, compared with the ordinary LED explosion-proof lamp and high-voltage LED explosion-proof lamp, they inevitably face the problems of heat dissipation design and working reliability.

    The explosion-proof principle of LED explosion-proof lamps is very important. It limits the temperature of the surface of the housing, the surface of components or the surface of electronic components in contact with explosive gases and explosive dust, and limits the temperature of the electrical contact surface below the minimum ignition or ignition temperature. LED explosion-proof lights are used outdoors and need to be driven by waterproof. LED explosion-proof lights need to be shockproof when used in gas stations!

    The explosion-proof type, explosion-proof grade and temperature of explosion-proof lamps are implemented in accordance with national standards.

    According to the explosion-proof type, it is divided into five main types: explosion-proof type, increased safety type, positive pressure type, non-sparking type and dust explosion-proof type, and can also be combined by other explosion-proof types and the above-mentioned various explosion-proof types or composite types and special types composition. According to the type of protection against electric shock, it can be divided into three types: I, II and III. Explosion-proof lamp protection is to prevent the explosion-proof lamp shell from being easily contacted with components, causing electric shock to the human body or contacting conductors with different potentials to generate sparks, resulting in mixed explosions.

    Class I - On the basis of basic insulation, all easily accessible conductive elements that are not live in normal operation are connected to the protective earth conductor in the fixed line.

    Class II - double insulation or reinforced insulation, without grounding protection, as safety protection.

    Class III - Use a safe voltage not exceeding 50v rms, and it will not produce results exceeding this voltage.

    Class 0 - Relying only on basic insulation for safety protection. The electric shock protection type of most explosion-proof lamp products is Type I, and only a few products are Type II and Type III. For example, all-plastic explosion-proof lights, flashlight explosion-proof lights, etc.