Parallel high-load bundled aerial cable

Abstract

The invention discloses a parallel high-load bundled aerial cable. The parallel high-load bundled aerial cable comprises a first pipe body, a second pipe body is arranged in the first pipe body, threethird grooves are formed in the inner side wall of the first pipe body at equal intervals, a first insulating layer is bonded to the inner side walls of the third grooves, a first cable is attached to the inner side of the first insulating layer, a second cable is arranged in the second pipe body, a second insulating layer is attached to the outer side wall of the second cable, the outer side wall of the second insulating layer is attached to the inner side wall of the second pipe body, and three connecting rods are welded to the outer side wall of the second pipe body at equal intervals. A heat conduction layer is arranged on the outer side of a flame-retardant layer, foam can assist in heat dissipation while buffering, a macromolecule breathable film only allows gas to pass through, then heat generated when the aerial cable is high in load is prevented from being accumulated in a bearing layer, and the problems that the resistance of the cable is increased, and the loss of electricenergy is too high in the transportation process are solved.

Description

technical field [0001] The invention relates to the technical field of overhead cables, in particular to a parallel high-load bundled overhead cable. Background technique [0002] Aerial cables are overhead wires equipped with insulating layers and protective sheaths. They are made of a special cable similar to the production process of cross-linked cables. They are a new power transmission method between overhead wires and underground cables. Overhead cables are Single-core, according to its structure can be divided into hard aluminum wire structure, hard-drawn copper wire structure, aluminum alloy wire structure, steel core or aluminum alloy core support structure and self-supporting three-core textured structure (wire core can be hard Aluminum or hard copper wire), etc., have the main characteristics of high power supply reliability, good power supply security, convenient erection and maintenance, and reasonable economy. [0003] Existing overhead cables, due to their hi...

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Problems solved by technology

[0003] Existing overhead cables, due to their high load during operation, will generate heat during operation, the heat will accumulate inside the protective layer, and the heat dissipation efficiency will be low, which will increase the resistance of the cable and cause excessive loss in the transportation of electric energy. , due to the external force of the three-core structure in the high altitude, the internal cables will rub against each other, causing the insulation layer to be damaged, and the contact of the cables will cause the risk of fire. Therefore, a parallel high-load bundled overhead cable is proposed

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