Photoelectric composite medium-voltage fireproof lock type cable

Abstract

The invention discloses a photoelectric composite medium-voltage fireproof lock type cable, belongs to the technical field of power cables, and aims to provide the photoelectric composite medium-voltage fireproof lock type cable, for increasing the efficiency of setting a protective layer outside multiple strands of wire cores. The cable comprises a cable core and a protective layer; each strand of wire core comprises multiple sets of core materials and an insulating layer; the space between the core materials and the insulating layer is filled with a second filling layer; the outer cylindrical surface of the insulating layer of each strand of wire core is provided with a locating bulge; a first grooved structure is arranged on the side surface of the locating bulge; a second groove is arranged below the locating bulge; a raised edge bulge is arranged at the outer end of the second groove; the outer cylindrical surface of the insulating layer of each strand of wire core is provided with a second grooved structure; a bulge structure is arranged below the second grooved structure; a clamping groove matched with the edge bulge is arranged at one end of the bulge structure; and, when adjacent two strands of wire cores are connected, a locking strip is installed in a space, which is formed by the first grooved structure of a strand of wire core and the second grooved structure of the other strand of wire core.

Description

technical field [0001] The invention belongs to the technical field of power cables, and in particular relates to a photoelectric composite medium-voltage fireproof lock type cable. Background technique [0002] With the rapid development of our country's national economy and the continuous improvement of people's living standards, the requirements for accelerating the construction of urban special-purpose power grids are becoming increasingly urgent. However, the application occasions of communication cables are complex, and the performance requirements for cables are extremely strict. Cables must have good mechanical and physical properties and be able to withstand various mechanical stresses, and the electrical properties will not deteriorate in harsh environments, so as to ensure long-term reliable work. However, existing cables generally have disadvantages such as poor shielding effect, low transmission speed, and poor anti-interference ability, especially for cables u...

AI Technical Summary

Problems solved by technology

In the prior art, since the exterior of each wire core is mostly a smooth cylindrical surface, when the protective layer is sheathed outside the multi-strand wire core, the wire cores will move with each other, and the distance between the wire cores changes at any time. Therefore, it is particularly troublesome when the multi-strand wire core is provided with a protective layer, and the work efficiency is revealed.

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