How to buy infield light explosion proof lamp?

Light source selection for explosion-proof lights in the field. Although incandescent lamps are still used more often, they are being gradually replaced by other light sources due to their low luminous efficiency and short lifetime. Among them, single-plug non-starter fluorescent lamps, self-ballasted high-pressure mercury lamps, and high-pressure sodium lamps are widely used.

Single-plug non-starter fluorescent lamp is a kind of cold cathode gas discharge lamp. The principle of light emission is to use the discharge between the electrodes to make the mercury atoms generate ultraviolet radiation, thereby igniting the fluorescent substance on the inner wall of the lamp tube. This kind of fluorescent lamp luminous efficiency factory explosion-proof lamp is higher (about 3 times the incandescent lamp), the service life is longer, there is no need to start the starter (usually in the lamp tube wall has a conductive layer, called the starter layer, The starting point of the fluorescent lamp depends on it; when the lamp is broken, the glow layer is also destroyed, the lamp is extinguished), and the cathode temperature is low (about 200°C or so), which is a safe and practical light source and is very suitable for making An-type lighting fixtures.

The self-ballasted high-pressure mercury lamp is a hybrid light source lamp that utilizes high-pressure mercury vapor discharge and three substances of incandescent body and fluorescent substance to emit light. It has the advantages of high brightness, simple structure, fast starting speed and so on. Changing the previous high-pressure mercury lamps requires the addition of ballast flameproof explosion-proof lamps. The use of tungsten filaments plays a role in limiting the flow and improves light color. The disadvantage is that the lifetime is shortened compared to ordinary fluorescent high-pressure mercury lamps. The high-pressure sodium lamp is a high-pressure sodium vapor discharge lamp, which has the advantages of high luminous efficiency, low power consumption, strong fogging ability, long service life, and the like. Currently, the single-plug non-starter fluorescent lamp and self-ballasted high-pressure mercury lamp are mainly used in the production unit of the author's unit. The original fixed explosion-proof incandescent lamp, in the case of meeting the minimum distance between the lamp and the transparent cover as stipulated in the regulations, has been replaced by the self-ballasted high-pressure mercury bulb of the original lamp and approved by the relevant unit. Although high-pressure sodium lamps have a certain energy-saving effect, due to their poor color rendering, we generally do not use them in production facilities and only use it in road lighting. Sometimes, in order to improve the white light color emitted by the high-pressure mercury lamp, some high-pressure sodium lamps may also be incorporated in the production device. For high-intensity lighting sites that require good color rendering (such as the on-site inspection of large-scale unit equipment), explosion-proof floodlights can be used. The light sources are generally metal halide lamps, and the rated power can reach more than 1000W.

The explosion-proof structure of the explosion-proof lights in the infield shall be determined according to the regional level and scope of the explosive gas environment. For example, explosion-proof lamps must be used within the scope of zone 1. The fixed lamps in zone 2 can be explosion-proof and increased safety. Lamps must be flameproof. The level or group of the positive pressure explosion-proof lamps selected shall not be lower than the explosion mixture level and group in the explosion-risk environment. At the same time, the impact of the environment on the positive-pressure explosion-proof lamps must be taken into consideration, and the requirements for various environments such as ambient temperature, air humidity, corrosion, or contaminating substances should be met. According to different environmental requirements, the lighting protection level and the corrosion protection level should be selected. Especially in the presence of corrosive gases in explosive gas atmospheres, it is crucial to select lamps with corresponding corrosion resistance.

In the past, among the petrochemical enterprises, the lighting fixtures in explosion hazardous locations were mainly flameproof. With the increasing use of increased safety electrical equipment in explosion hazardous locations in Zone 2, increased safety and composite lighting fixtures are also being used more and more. The increased safety type lamps and lanterns have a certain degree of explosion-proof performance, compared with the explosion-proof lamps, lighter weight, low price, easy installation and maintenance, long service life. The most widely used composite electrical equipment used in petrochemical enterprises is the Zengan-explosion-proof compound type explosion-proof electrical equipment. It is generally composed of three parts: explosion-proof components, increased-safety terminal blocks, and increased safety enclosures. It has both flameproof safety. Performance, but also has the advantage of increased safety.