Explosion-proof lights-LED explosion-proof lights

Definition of explosion-proof lights

refers to lights used in dangerous places where flammable gases and dust exist, which can prevent arcs, sparks and high temperatures inside the lamp from igniting flammable gases and dust in the surrounding environment, thereby meeting the explosion-proof requirements. There are mainly explosion-proof explosion-proof lights, safety explosion-proof lights, and mobile explosion-proof lights. Explosion-proof platform lights are suitable for lighting in flammable and explosive places such as petrochemical installations, petroleum platforms, gas stations, oil pump rooms, and transfer stations, explosive atmosphere, flammable dust environment.

Types of explosion-proof lights

Explosion-proof lights are a type of lighting fixtures with explosion-proof performance. They are classified according to the type of light source: there are three types of explosion-proof fluorescent lights, explosion-proof LED lights and metal halide lights. , It can prevent the arc, spark and hot weather inside the lamp from igniting the flammable gas and dust in the surrounding environment, so as to meet the explosion-proof requirements. The sealing performance of explosion-proof lights has a dust-proof ability of at least level 4 and the protection ability against water is divided into 0-8 levels. Further protection measures are taken on the structure, etc. The state has certain requirements for explosion-proof lights. Non-explosion-proof lights do not have more than one requirement. Different flammable gas mixture environments have different requirements on the explosion-proof level and type of explosion-proof lights. According to the requirements of different flammable gas mixture environments, explosion-proof lights have the following classifications.

1.According to the explosion-proof type, it is divided into flame-proof type, increased safety type, positive pressure type, non-spark type and dust explosion-proof type. There are 5 main types. It can also be composed of other explosion-proof types and the above-mentioned various explosion-proof types in combination or composite and Special type.

2.According to the type of protection against electric shock, it can be divided into categories I, II and III. Anti-shock protection is to prevent the explosion-prooflightsand lanterns from easily touching parts from being electrified, causing the human body to be electrocuted or conductors of different potentials to touch and generate electric sparks to ignite explosive mixtures. Class AI-On the basis of basic insulation, all accessible conductive parts that are not charged during normal work are connected to the protective ground conductor in the fixed line. Type B Ⅱ-Double insulation or reinforced insulation is used as a safety protection measure, without ground protection. CⅢ-Use a safe voltage with an effective value not greater than 50v, and it will not produce a value higher than this voltage. Class D0-Only rely on basic insulation as a safety protection measure.

3.The selection of explosion-prooflightsrequires confirmation of the following conditions: 1. Explosion-proof signs; 2. Light source types: fluorescent lights, LED lights, metal halide lights 3. Lamp power (wattage); 4. Shell material; mainly cast aluminum material, Also available in stainless steel (n type), resin plastic material (increased safety); 5. Protection level (indoor and outdoor); 6. Integrated or split type (separate ballast box); 7. Installation method: flange type , Guardrail type, boom type, ceiling type, wall type.

LED explosion-proof light VS ordinary explosion-proof light

Definition of LED explosion-proof lights:

LED explosion-proof lights are used in dangerous places where flammable gases and dust exist. They can prevent arcs, sparks and high temperatures inside the lamp from igniting flammable gases and dust in the surrounding environment, so as to meet explosion-proof requirements. Ordinary LED lights refer to lights used in hazardous locations where non-flammable gases and dust exist. They do not have explosion-proof grades or explosion-proof requirements. The LED lights used in the corridors of offices and office buildings are ordinary LED lights. The difference between it and LED explosion-proof lights is that the former mainly highlights lighting, while the latter requires explosion protection in addition to lighting, to avoid causing a dangerous external environment explosion, to ensure the personal safety of public officials, and to avoid the loss of company property.

Features of LED explosion-proof lights

1.Strong adaptability

LED explosion-proof lights are mainly installed and used in dangerous places where explosive gas is present. Relatively, the use of LED explosion-proof lights is safer than other explosion-proof lights. The LED explosion-proof lamp is mainly installed and used in flammable and explosive dangerous places. It is a lamp that can prevent the ignition of the surrounding explosive mixture and take various specific measures. At the same time, it improves the waterproof and dustproof performance of the explosion-proof lamp, which makes the LED explosion-proof lamp environment adaptable. It is strong and can be used normally under different environmental conditions, such as long-term use in external environments such as salt spray, pollution, condensation. The LED explosion-proof lamp is not only not affected by the atmospheric state, but also has a compact structure, small size, and saves floor space. It is more coordinated with the surrounding environment in terms of layout, size and appearance, and is more adaptable. Combining explosion-proof lights with LED light sources, the light is soft and glare-free, which will not cause eye fatigue for operators, while improving the work efficiency and utilizing the characteristics of low heat generation of LED to ensure the stability of LED explosion-proof lights in use.

2.High-quality materials:

Due to the particularity of the application areas of LED explosion-proof lights, most of them have very harsh environmental conditions. Therefore, there are certain requirements for mechanical strength and mechanical structure. The overall structure is solid and reliable. The surface of the casing is made of high-tech plastic spray technology, which makes the LED explosion-proof lights have Good abrasion resistance and corrosion resistance. The housing is made of metal materials. The surface of the housing is also subjected to high-pressure plastic spraying. It has good abrasion resistance, ensuring that the LED explosion-proof lights are sturdy and reliable, and can be used for a long time in harsh environments. .

3.High explosion-proof performance:

The LED explosion-proof lamp has good explosion-proof performance, has a variety of explosion-proof structural forms, can meet the needs of installation in different environmental conditions, and can be used normally in hazardous places.

4.Protective performance:

LED explosion-proof lights have excellent protection performance. In the presence of some explosive gases, there will be dangerous factors such as moisture and water. Therefore, LED explosion-proof lights must have good sealing performance, corrosion resistance, oxidation resistance, water resistance and dust resistance. Etc. to ensure that the LED explosion-proof lights can be used normally in a variety of harsh environments, and the requirements of the protection level of the LED lights for the enclosure are not high.

Advantages of LED explosion-proof lights compared explosion-proof lights

1.Explosion-proof LED lights can be used in hazardous areas. The LED explosion-proof lamp is used in some environments that are easy to explode or ignite. It is an industrial lamp. Its design and manufacturing are very scientific. It can effectively prevent the arc and spark in the lamp. To good explosion protection. Led explosion-proof light is a kind of electrical equipment used in special industries. It is mainly used for lighting. Its light distribution is very unique, with a wide and uniform range of illumination angles. The light is soft and dazzling.

2.LED explosion-prooflightsuse LED light sources, and ordinary explosion-proof lights do not necessarily use LED light sources. At the same power of both, the brightness of LED explosion-proof lights is brighter than ordinary explosion-proof lights. In addition, LED lights are originally semiconductor lighting, the explosion-proof level is higher than ordinary. Because LED is a solid-state cold light source, it has the advantages of high electro-optical conversion efficiency, low heat generation, low power consumption, safe low voltage and long service life. Therefore, high-power white LED are explosion-proof lights, especially portable explosion-proof. A very ideal electric light source for lights.

3.One of the very important explosion-proof principles of LED explosion-proof lights is to limit the temperature of the surface of the shell, the surface of parts or electronic components in contact with explosive gas and explosive dust, and to limit the temperature of the electrical contact surface below its minimum ignition temperature or ignition temperature. Igniting temperature. Explosion-proof led for outdoor use require a waterproof driver. Explosion-proof led used in gas stations need to be shockproof!

4.The explosion-proof structure of LED explosion-prooflightsis more complicated, and the lines are more. Its shell is made of aluminum alloy die-casting, with high density and high strength. The surface process is very fine, using high-voltage electrostatic spraying, corrosion resistance and light structure. The circuit board of the led explosion-proof lamp has a dust-proof, anti-corrosion and moisture-proof lamp design, which has good performance and strong stability.

LED explosion-proof lamp classification

There are many types of LED explosion-proof lights, which can be specifically divided into the following: LED explosion-proof flood lights, LED explosion-proof road lights, LED explosion-proof flood lights, LED explosion-proof emergency lights, LED explosion-proof sign lights, etc.

1.LED explosion-proof flood light, which is mainly applicable to flammable and explosive places such as drilling platforms, offshore oil platforms, oil refineries, chemical plants, tunnels, oil depots, ships, etc .; suitable for zones 1 and 2 explosive gases The environment and various indoor and outdoor operations and construction sites are fixed.

Matching light source: LED. Rated voltage: 90-264VAC / 127-220VDC. Rated power: 80-150W. Explosion-proof mark: Exd IIC T6. Housing protection: IP65. Corrosion protection level: WF2

2.LED explosion-proof road lights, explosion-proof highest explosion-proof level, can be safely used in various flammable and explosive places. LED explosion-proof road lights can be used in heavy-duty enterprises for dangerous production, and are specially designed for petrochemical, chemical, petroleum and other sites.

Equipped with light source: LED. Rated voltage: 220V 50Hz. Rated power: 40/50/60 / 70W. Explosion-proof mark: Exdemb IIC T4. Enclosure protection: IP66. Corrosion protection level: WF2

3.LED explosion-proof flood lights are widely used for general lighting and job lighting in petroleum, petrochemical, steel, power, port and dock, outdoor operations and construction sites.

Equipped with light source: LED. Rated voltage: 220V 50Hz. Rated power: 100/120/140 / 200W. Explosion-proof mark: Exdemb IIC T4. Housing protection: IP66. Corrosion protection level: WF2.

Common applications of LED explosion-proof lights

Because LED is a solid-state cold light source, it has the advantages of high electro-optical conversion efficiency, low heat generation, low power consumption, safe working voltage, low voltage, and long service life. A very ideal electric light source for portable explosion-proof lights. Utilizing the characteristics of LED’s low heat generation, it achieves intrinsically safe explosion-proof, and the LED light source has a long life; the battery maintains constant brightness at the end of full charge and discharge; the heat dissipation device is installed on the lamp housing, which can realize the effective heat dissipation of the LED module LED explosion-proof lights are not only suitable for underground mine roadways and fixed lighting with explosive mixtures such as methane and coal dust. LED explosion-proof lights are currently the most energy-efficient explosion-proof lights, and are widely used in oilfields-power plants-chemical plants-petroleum-troops. It is also very suitable for underground underground parking lots, central substations and other main channels as LED explosion-proof lights for lighting. Led explosion-proof lights are widely used in industrial lighting because they have a good explosion-proof effect and many properties. They are a relatively important lighting tool in modern society. It guarantees the stability of use and is suitable for lighting in a variety of industries such as coal mines, petroleum, railways and flood control.

Precautions for use of explosion-proof lights

Explosion-proof lights and lamp covers should be able to automatically cut off the power before opening. However, because the interlocking device is more complicated to set up, it is not easy to implement, so most lights only have warning signs such as “Do not open with power on” when the housing is clearly visible. Because the surface temperature of the bulb is still high after the power is turned off, if the lamp cover is opened immediately, there is still the danger of igniting explosive gas mixtures (mainly referring to the flame-proof structure). Attention should be paid to lights that can quickly open the cover. When replacing the bulb (tube), the flameproof joint surface of the explosion-proof lamp should be properly protected from damage; the flameproof surface after cleaning should be coated with phosphating paste or 204-1 antirust oil, and other paints are strictly prohibited; flameproof There should be no rust layer on the surface. If there is slight rust, there should be no numbness after cleaning. The sealing ring used for dust and water resistance must be intact, which is very important for the safety-enhancing lights. If the sealing ring is seriously damaged, replace it with a sealing ring of the same specification and the same material, and replace the entire lamp if necessary. When repairing, pay attention to whether thelightshade is intact and replace it immediately if it is broken.

Development trend of LED explosion-proof lights

The anti-shock performance of LED explosion-proof lights is good. As a new type of lighting source, LED explosion-proof energy-saving lights have won the favor of the people and the strong support of the country for their remarkable features of energy saving, health, environmental protection and long life. The ordinary lamp heats the filament to an incandescent state, and uses thermal radiation to emit visible light. However, due to low light efficiency, it has gradually been replaced by LED lights. LED explosion-proof lights, patented road sealing technology; more in line with national new explosion-proof technology. The utility model belongs to a kind of electrical equipment used in a special industry, which mainly solves the lighting problem. It includes a lamp housing, a lamp cover provided at the front end of the lamp housing, a light emitter and a battery provided inside the lamp housing, and a switch provided on the surface of the lamp housing. : The light-emitting body is a high-power LED module. A wide-voltage input driving circuit is provided between the light-emitting body and the battery. The wide-voltage input driving circuit includes a constant current chip. The constant current chip and the battery form a power module. The LED module is connected to On the constant current chip, the power module and the LED module are glued together; ultrasonic welding is performed between thelightshade and the lamp housing. It utilizes the characteristics of low heat generation of LED to achieve intrinsically safe explosion-proof, and the LED light source has a long life; the battery maintains constant brightness at the end of full charge and discharge; the heat dissipation device is installed on the lamp housing, which can achieve the effective heat dissipation of the LED module , To ensure the stability of use, suitable for mining, petroleum, railway, flood prevention and other industries.