Round split conductor with internal optical fibers

Abstract

The invention discloses a round split conductor with internal optical fibers. The round split conductor is made by assembling a plurality of conductor sectors. Insulating crinkled paper for isolating the conductor sectors is arranged among the conductor sectors. At least one wire having a central direct-laid fiber unit is provided between sector corners of every two adjacent conductor sectors. The round split conductor allows the temperature and transmission load of the power cables to be monitored in real time and can serve as a large-section conductor for 'triple-play', 'smart' and extra-high voltage or high voltage power cables; the direct-laid optical fiber units wrapped with the wires is never broken, the wires also effectively protects the fiber units, no extrusion is caused during processing and laying, especially heat and expansion inevitably occurring during running of the cables are avoided, space for the fiber units is guaranteed, the elastic material of the wires provide buffering for the expansion inside thus the fiber units are never damaged, and normal running is guaranteed.

Description

[0001] technical field [0002] The invention relates to the field of cable conductors, in particular to a rounded split conductor with built-in optical fibers. Background technique [0003] With the rapid growth of China's economy and the further acceleration of industrialization and urbanization, the requirements for the construction of infrastructure such as urban power grids are increasing. Cities in developed regions and provincial capitals have required the use of underground power cables to transmit electric energy in urban centers. At the same time, electricity is the premise and foundation of the development of the national economy. With the rapid development of the national economy, the demand for electricity has increased sharply, the capacity of the grid has increased sharply, and the power of motors has increased. ) transmission direction. In order to increase the carrying capacity of the cable, the method of increasing the cross section of the conductor is...

AI Technical Summary

Problems solved by technology

The thicker the stainless steel tube with this structure, the larger the outer diameter, the larger the space required, the larger the central angle (vertex angle) of the fan-shaped strand, the greater the difficulty of processing, and the larger the gap between the stainless steel tube and the fan-shaped strand. The larger; the outer diameter of the stainless steel tube is too small, the diameter of the steel tube will inevitably be small, and the torsional force and tensile force that can withstand are still small, and it will be crushed, the optical fiber will be broken, or the optical fiber will be twisted and pulled; The structure described in this patent is only suitable for the structure of placing optical fibers in the center, and it is only an ordinary low-voltage and small-section cable, which limits the application in large-section fan-shaped split conductors

At the same time, stainless steel pipes or other metal pipes will also cause uneven electric field and increase line loss

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