CN204176559U - Fiber illumination device under particular surroundings - Google Patents

Abstract

The utility model provides an optical fiber lighting device in a special environment, which includes a light source, an optical fiber bundle, a wall-through seal, and a lamp holder. The light source is connected with the optical fiber bundle, and the optical fiber bundle enters the special environment or Entering the shell, tank, and cabin, each end of the optical fiber bundle is connected to the lamp head. The light emitted by the light source is transmitted by the optical fiber bundle through the wall seal and then emitted from the lamp head to achieve electro-optic separation. The lighting lamp head can be flexibly arranged to meet the lighting needs of many types of special environments. The utility model can provide safe and reliable lighting in the environments of flammability, explosion, differential pressure, airtightness and water resistance. With the characteristics of high safety, simple structure, reliable operation and convenient maintenance, it can widely meet the lighting needs of chemical industry, military industry and other industries.

Description

Optical Fiber Lighting Devices in Special Environments

technical field

The utility model is an optical fiber lighting device which is especially suitable for special environments in chemical industry, military industry and the like, and relates to the technical field of lighting, in particular to the optical fiber lighting technology.

Background technique

In the chemical industry, military industry and other industries, there are often lighting requirements in special environments such as flammability, explosiveness, differential pressure (high pressure, vacuum), airtightness, and waterproofness.

When using lighting fixtures in special environments, the following issues must be considered to prevent lighting fixtures from becoming unsafe factors. 1) Whether the surface temperature is too high; 2) Whether the equipment has electrical arcs or sparks; 3) Whether the accumulated static electricity is discharged; 4) Whether there is a large amount of radiant energy; 5) Whether there are mechanical sparks, friction sparks or heat related to the equipment . 6) Whether it meets the tolerance requirements for special environments

At present, various explosion-proof lamps are allowed to be used in flammable and explosive environments, because the electro-optical conversion element is installed in the lamp, sealing measures must be taken to ensure its safety and explosion-proof. Explosion-proof lamps use pressure-resistant materials and thick-walled structures, resulting in large lamp volume and heat accumulation. In order to prevent the surface temperature of the lamp from being too high, it is necessary to control the calorific value of the lamp or increase the heat dissipation area of the shell. At present, ordinary explosion-proof lamps are difficult to achieve: to eliminate leakage to ensure safety, further reduce the size, reduce surface temperature, and reduce costs. Therefore, in flammable and explosive environments, there is an urgent need for new lighting devices with no leakage risk, high electro-optical conversion efficiency, low surface temperature of lamps, no arc and spark hazards, and low cost.

Illumination devices used in environments with differential pressure (high pressure, vacuum), airtightness, and water resistance require sealing measures. It is necessary to seal not only the lamps but also the power supply cables. The structure is complex, there is a risk of leakage, and the cost is high. , leak detection and maintenance workload.

In the chemical industry, military industry and other industries, the existing lighting devices in special environments such as flammability, explosiveness, differential pressure (high pressure, vacuum), airtightness, and waterproofness often have the above shortcomings, and new lighting devices are needed for improvement. ,improve.

Utility model content

The purpose of this utility model is to provide an optical fiber lighting device in a special environment for the defects and deficiencies in the prior art, which is suitable for lighting in flammable, explosive, differential pressure, airtight and waterproof environments. , with the advantages of safety, reliability, convenient layout, and various lighting methods.

The technical scheme adopted by the utility model is as follows: an optical fiber lighting device in a special environment, which is characterized in that it includes a light source, an optical fiber bundle, a wall-through seal, and a lamp holder, the light source is connected with the optical fiber bundle, and the optical fiber bundle passes through the wall The seal enters the special environment or enters the housing, tank, pod, and each end of the fiber optic bundle is connected to the lamp head.

The wall-piercing seal includes a wall-piercing tube, a compression nut, a compression piece, and a rubber gasket. Glue is injected into the wall-piercing tube, and threads matching the compression nut are processed on the outside of the wall-piercing tube. , compression piece and rubber gasket to achieve static sealing.

The light source adopts an electric light source, preferably a high-efficiency white LED as a luminous body; the light source is directly placed in an airtight container under an ordinary environment or a special environment.

The optical fiber bundle is bundled by a plurality of optical fibers, and the optical fibers are quartz optical fibers, glass optical fibers or plastic optical fibers.

The lamp head is a wide-beam diffused lamp head, a spot-type lamp head or a narrow-beam lamp head.

The utility model has multiple advantages, and is most suitable for realizing safe and reliable lighting in a special environment. Because it belongs to optical fiber lighting, only the fiber bundle enters the special environment, no electrical sparks are generated, it has extremely high safety, and is suitable for flammable and explosive environments; the visible light accounts for a high proportion of the light emitted by the white LED, and the infrared light only accounts for a small part. small portion. Therefore, the illuminating device greatly reduces the possibility of temperature rise of the illuminated object or stability change of the dangerous object caused by infrared radiation. The through-wall seal provides safe isolation in special environments, so that the lighting device can be safely used in environments such as flammability, explosion, differential pressure (high pressure, vacuum), airtightness, and water resistance.

Description of drawings

Fig. 1 is a structural schematic diagram of Embodiment 1 of the utility model.

Fig. 2 is a structural schematic diagram of the second embodiment of the utility model.

Fig. 3 is a half-sectional schematic diagram of the wall-penetrating seal of the present invention.

Detailed ways

The utility model lies in that the light emitted by the light source 1 is transmitted by the optical fiber bundle 2 through one or more wall-penetrating seals 3 and then emitted from the lamp holder 4, and the charged part is not exposed to special environments, thereby meeting the lighting requirements of various special environments.

Each end of the optical fiber bundle 2 is equipped with a lamp cap, and different lamp caps 4 are not limited to wide-beam scattering lamp caps, and can also be point lamp caps or narrow-beam lamp caps to meet lighting requirements of different distances, different widths, and different illuminances on site.

The light source 1 adopts an electric light source, preferably a high-efficiency white LED as a luminous body. It has a good heat dissipation shell, white LED, condenser, and coupling adjustment mechanism are installed inside. The condenser cover and the lens coupling adjustment mechanism ensure that most of the light emitted by the LED enters the optical fiber bundle 2 .

As shown in FIG. 3 , the wall-piercing seal 3 includes a wall-piercing tube 20 , a compression nut 30 , a compression piece 40 , and a rubber gasket 50 . The wall-piercing tube is processed with threads matching the nuts. The through-wall seal 3 is based on the principle of contact static sealing, relying on tightening stud bolts or bolts to generate compression force on the rubber gasket 50, and the rubber gasket 50 can achieve a very tight joint surface between two compressed hard surfaces , can reliably guarantee the sealing of gas, liquid and dust. Therefore, the light source 1 can be placed in a normal environment, and the optical fiber bundle 2 can pass from the normal environment to the special environment by means of the through-wall seal 3 . In a special environment, the light source 2 can be protectively installed in a sealed container, and the wall-penetrating seal 3 is fixed on the shell 60 of the airtight container, shell, tank, and cabin, and the optical fiber bundle 2 passes through the wall When the tube 20 is injected with a glue solution with good wettability and fluidity, the glue solution not only connects the optical fiber bundle 2 and the wall-piercing tube 20 as a whole, but also realizes the solid connection and sealing between the optical fibers inside the optical fiber bundle 2 . With the help of the through-wall seal 3, the isolation and sealing of the optical fiber bundle 2 entering and exiting the ordinary environment and the special environment can also be realized, and the isolation and sealing of the optical fiber bundle 2 entering and exiting the airtight container, shell, tank, and cabin can also be realized.

The utility model has two technical solutions, the main difference is whether the light source is installed in a common environment or a special environment.

Embodiment 1: The light source is installed in a normal environment, and the optical fiber bundle 2 is passed from the normal environment to the special environment by means of the through-wall seal 3 . See Figure 1.

The light source 1 adopts an electric light source, preferably a high-efficiency white LED as a luminous body. The light source 1 is installed in an ordinary environment. It has a good heat dissipation shell, and a white LED, a condenser cover, and a coupling adjustment mechanism are installed inside. The light emitted by the LED goes to the coupling adjustment mechanism, and the light scattered by it is reflected by the condenser cover and then goes to the coupling adjustment mechanism. The light passes through the lens of the coupling adjustment mechanism and converges on the end face of the polished fiber bundle. In this way, the light generated by the electric light source is sent into the fiber bundle to the greatest extent. In some environments, such as limiting infrared light, ultraviolet light or having lighting color requirements, a filter can also be added before the light enters the optical fiber bundle 2 to adjust the lighting output.

The optical fiber bundle 2 is composed of a plurality of optical fibers 10 bundled, has a certain degree of bendability, and it can be single-path lighting or distributed as multi-path lighting. When the optical fiber bundle 2 leads from the light source 1 to the lighting site in a special environment, the through-wall seal 3 can be used to solve the isolation or sealing on both sides in an environment that needs to be isolated or sealed.

The optical fiber bundle 2 penetrates into a special environment and connects with the lamp holder 4 through one or several wall-through seals 3 . The light emitted from the lamp head realizes the provision of safe, reliable, low-cost and conveniently arranged lighting for special environments.

Because of the high luminous efficiency of the LED, the coupling adjustment mechanism and the condensing cover can increase the ratio of light entering the fiber bundle, and the loss of light transmitted by the fiber is small, so only a 30W LED white light source can pass through a 20-meter fiber bundle in an ordinary environment. Provide 200lux lighting in special environments to meet common observation, reading, operation and other lighting needs.

Embodiment 2: If the light source 1 must be installed in a special environment, the light source 1 can also be protectively installed in a sealed container, and the optical fiber bundle 2 can pass through the sealed container with the help of the wall-through seal 3 to provide illumination. The optical fiber bundle 2 can also be penetrated into the casing, the tank body, and the cabin body to provide illumination by means of the through-wall sealing member 3 . See Figure 2.

The light source 1 is installed in a special environment (inflammable, explosive, differential pressure, airtight, waterproof environment). The main heating elements inside the light source 1 are LED power supply and LED illuminant. Because the LED has high luminous efficiency and less heat generation, the temperature rise of the light source 1 can be reduced and the safety can be improved by relying on the specially designed LED power supply and the aluminum heat dissipation casing. 3. Passing out the optical fiber bundle 2 to provide illumination for the external special environment or a local small environment under the special environment. The 30W LED white light source is matched with a good heat dissipation shell, and it also meets the safety requirements after continuous operation.

Therefore, lighting in common flammable, explosive, differential pressure, airtight, and waterproof environments can be realized through this lighting device, and it also has the advantages of safety, reliability, convenient layout, and various lighting methods.

Claims (5)

1. An optical fiber lighting device in a special environment, characterized in that: it comprises a light source (1), an optical fiber bundle (2), a wall-penetrating seal (3), a lamp holder (4), and the light source (1) and the optical fiber bundle (2) are connected, the optical fiber bundle (2) passes through the wall seal (3) to enter a special environment or enters a housing, a tank body, a cabin body, and each end of the optical fiber bundle (2) is connected to the lamp holder (4). 2. The optical fiber lighting device in a special environment according to claim 1, characterized in that: the through-wall seal (3) includes a through-wall tube (20), a compression nut (30), a compression piece (40), The rubber gasket (50) is injected with glue in the wall-piercing pipe (20), and the outside of the wall-piercing pipe (20) is processed with threads matching the compression nut (30). Sheet (40) and rubber gasket (50) realize static sealing. 3. The optical fiber lighting device in a special environment according to claim 1, characterized in that: the light source (1) adopts an electric light source, preferably a high-efficiency white LED as a luminous body; the light source (1) is directly placed in an ordinary environment or a special environment in an airtight container below. 4. The optical fiber illuminating device under special environment according to claim 1, characterized in that: the optical fiber bundle (2) is made of a plurality of optical fibers, and the optical fibers are quartz optical fibers, glass optical fibers or plastic optical fibers. 5. The optical fiber lighting device for special environments according to claim 1, characterized in that: the lamp head (4) is a wide-beam scattering lamp head, a point-type lamp head or a narrow-beam lamp head.