Large-span reinforced aerial insulated cable

Abstract

The invention discloses a large-span reinforced overhead insulated cable, which comprises a first conductor layer arranged in the center of the cable, a second conductor layer is arranged outside the first conductor layer, and the thickness of the second conductor layer is sequentially extruded. An insulating layer of 2-4mm, a silver-plated annealed copper tape armor layer with a thickness of 3-6mm, and an aluminum-plastic armored polyethylene sheath layer with an extruded thickness of 8-10mm; the first conductor layer It consists of a galvanized steel strand reinforcement core in its center and a number of tinned copper conductors surrounding the galvanized steel strand reinforcement core with the galvanized steel strand reinforcement core as the center; the second conductor layer consists of A pair of tinned steel wire bearing cores symmetrical to the center of the cable and several tinned nickel conductors are combined. The invention has the advantages of good self-supporting and compression resistance, good moisture-proof and sealing performance, small attenuation, good insulation effect, good cooling effect and the like.

Description

technical field [0001] The invention relates to the field of wires and cables, in particular to a large-span reinforced overhead insulated cable. Background technique [0002] Cables refer to materials used for power, communication and related transmission purposes. At present, with the development of society, the demand for cables continues to rise, and people's requirements for cables are getting higher and higher, especially in the environment of overhead cables. When the cable is subjected to external stress, the internal wires are prone to displacement, causing the local temperature of the cable to be too high, which affects the communication effect of the cable; the cables of the cable are usually connected by a connecting rib. When the connecting rib is damaged , the cables will be separated from each other, which will easily cause damage to the cable sheath and affect the performance of the cable such as wear resistance and high temperature resistance; Dissipated, r...

AI Technical Summary

Problems solved by technology

Aerial cables are composed of an inner conductor layer, an insulating layer, an outer conductor layer and a sheath layer. The inner conductor layer and the outer conductor layer usually have a small cross-section and poor self-supporting performance, especially when the cable is used under the condition of not being buried. Due to the poor bearing performance, the weight of the cable itself will cause the cable conductor to break, and it is also easy to damage the small cable conductor during construction.

[0004] In the prior art, the supporting frame is used to support the cable, and the overhead cable is protected by adding a supporting frame, which has a certain effect, but it increases the laying cost and time, and the cable itself has poor bearing performance. The problem of damage to the core of the cable caused by the operation; in addition, most cables are caused by excessive temperature, which causes spontaneous combustion and causes great losses

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