Water penetration detection device for optical fiber cable junction box

摘要

The present invention relates to a waterproof sensing device (1) for an optical fiber cable connection enclosure, and since the optical fiber cable uses quartz-based glass as a main material, much care must be taken in the optical fiber cable connection facility. An example of this is as follows. If water penetrates into the optical splice enclosure due to operational problems, manhole conditions, or defects in the enclosure after working in the junction, the optical fiber will increase fiber loss, shorten life span and core short circuit through chemical bonding with water molecules. In order to solve this problem, in the case of water penetration in the optical junction box, the absorption polymerizer 6-3 of the sensing box 6 in the sensing adjusting unit C to the absorption hole 6-4 of the designed waterproof sensing device 1 is provided. When water absorbs water, the waterproof sensing plate (6-2) rises along the swelling synergistic action, and it meshes with the tip of the sensing cover plate (5-1) and the groove of the waterproof sensing plate (6-2) to The pressure is applied, causing the fiber to bend, causing loss. At this time, the point where the loss occurs is monitored by the Optical Time Domain Reflector Meter (OTDR) to monitor the faulty connection point or to install an automatic alarm device using a light source and an optical power meter. By detecting the abnormality of the line, it can have a great effect on the fiber cable cable accident prevention activity that transmits large capacity. In addition, this device can be installed regardless of the type of optical splice enclosure, and can be applied to both new and existing enclosures and can be reused. The waterproof sensing device 1 is used for the waterproof sensing device 1 in optical connection enclosures used in processing, pipelines, direct sales, cutlery optical cables, and the like.