Quick junction box for optical cables

Abstract

The invention relates to a quick junction box for optical cables, comprising a base, a fiber fusion disc mounted on the base through a support and an enclosure packaged on the base and receiving the fiber fusion disc; an optical cable incoming wire and an optical cable outgoing wire run through and are fixed to the base respectively, the base is also fitted with a fiber flange fixture, a plurality of fiber flanges are mounted on the fiber flange fixture, optical cable incoming wire fiber cores are each in fusion connection with one single-end jumper fiber on the fiber fusion disc, the single-end jumper fibers are correspondingly connected to top ends of the fiber flanges respectively, optical cable outgoing wire fiber cores are in corresponding connection with the bottom ends of the fiber flanges, and the enclosure or the base is fitted with a humidity sensing alarm device. The quick junction box is simple in overall structure, stable and reliable, and convenient to maintain, the difficulty in cable laying construction can be greatly reduced, signal transmission reliability can be greatly improved, and working efficiency can be improved.

Description

technical field [0001] The invention relates to an optical cable quick transfer box mainly used in OPGW optical cable transfer. Background technique [0002] OPGW optical cable (Optical Fiber Composite Overhead Ground Wire, also known as optical fiber composite overhead ground wire), the optical fiber cable is composed of metal and optical fiber, and the optical fiber is placed in the ground wire of the overhead high-voltage transmission line to build an optical fiber communication network on the transmission line , this structure makes the cable have dual functions of ground wire and communication. [0003] It can be seen from the above that the OPGW optical cable itself contains ground wires and communication functions. It is erected on the iron tower and is easy to guide lightning. Another kind of all-dielectric self-supporting metal-free optical cable (also known as ADSS optical cable) core fusion, through which the optical fiber signal is introduced into the substation...

AI Technical Summary

Problems solved by technology

[0004] The main problem in the actual use of the existing transition box is the damage of the guide cable (ie ADSS cable). The mechanical properties of the guide cable are worse than those of the metal cable. During the construction process, people step on it or receive other external forces during operation. It is easy to cause the fiber core of the optical cable to be damaged or broken. In addition, it is also easy to accidentally cut the cable during the cable cleaning process. Therefore, the guiding optical cable is very easy to be damaged.

[0005] When the operation and maintenance personnel inspect and find that the guiding optical cable is damaged, the entire guiding optical cable needs to be replaced. Optical fiber fusion splicing is performed again. The optical fiber fusion splicing itself requires professional fusion splicing equipment and professional fusion splicing personnel. The work is difficult and the work efficiency is low. Most substations are located in remote locations, which further increases the difficulty of repair, resulting in long-term communication interruptions in substations or communication stations. The remote power equipment cannot operate normally, seriously affecting the safety and reliability of power supply

[0006] In addition, there is also the problem of poor sealing in the transfer box, which may easily cause water ingress or excessive humidity in the transfer box, and the fiber core of the optical cable is very fragile, especially at the fusion point of the fiber core. When there is water or humidity is too high, Affects the quality of signal transmission, and it is more likely to cause damage to the fiber core in freezing weather in winter

Once the fiber core is damaged, the entire transfer box is scrapped, and it needs to be re-wired and fused. In addition, since there are more than one optical cable transfer points, when the signal transmission quality is poor or the transmission is interrupted due to fiber core damage, it is difficult to fail. Troubleshooting often consumes a lot of human and material resources and the effect is not good

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