Selection of RJW7101 explosion-proof searchlight

RJW7101 explosion-proof searchlight light source selection. 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 fluorescent lamp has a high luminous efficiency (about three times that of incandescent lamps) and has a long service life. It does not require a starter when starting (usually a conductive layer on the lamp tube wall, called the glow layer, the fluorescent lamp Rely on it to complete; 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 increased safety lighting fixtures. .
The self-ballasted high-pressure mercury lamp is an RJW7101 explosion-proof searchlight that utilizes high-pressure mercury vapor discharge and light emission of incandescent body and fluorescent substance. It has the advantages of high brightness, simple structure, fast starting speed and so on. The disadvantages of external ballasts need to be changed in previous high-pressure mercury lamps, and tungsten filaments are used to limit the flow, and light color is also improved. 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case of meeting the minimum distance between the lamp and the transparent cover as stipulated in the regulations, has been replaced by the self-ballasted high-pressure mercury bulb of the original lamp and approved by the relevant unit.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 certain energy-saving effects, due to their poor color rendering, we generally do not use them in production plants, and they are only used in road lighting of NGC 9810 high-dome lamps. 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 type of RJW7101 explosion-proof searchlight is 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. Flameproof type must be used. The level or group of RJW7101 explosion-proof searchlights selected should not be lower than the explosive mixture level and group in explosion hazardous environments. At the same time, the impact of the environment on the RJW7101 explosion-proof searchlight should be taken into account. It should meet the requirements of various environments such as ambient temperature, air humidity, corrosion, or pollutants. 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, more and more shockproof floodlights have been used for increased safety and composite lighting fixtures. The increased safety type luminaire has the advantages of light weight, low price, convenient installation and maintenance, long service life, etc. compared with the flameproof type lamps on the basis of certain explosion-proof performance. 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.

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