CN211125070U

CN211125070U - Energy-saving low-consumption material-stranding compact aluminum conductor

Info

Publication number: CN211125070U
Application number: CN201922452336.2U
Authority: CN
Inventors: 陈铁军; 张恒; 罗艳玲; 杨海玉; 刘玉红; 王爱军
Original assignee: Henan Ruilitong Copper Co ltd
Current assignee: Henan Ruilitong Copper Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-07-28
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to the technical field of power cables, and discloses an energy-saving low-material-consumption twisted and compacted aluminum conductor, which comprises a central layer and a peripheral layer, wherein the central layer is a circular aluminum-clad steel wire; the peripheral layers are multiple layers and are sequentially stranded and tightly pressed on the central layer, and the stranding directions of the adjacent peripheral layers are opposite; each peripheral layer comprises a plurality of fan-shaped aluminum wire assemblies, and each aluminum wire assembly is of a plurality of aluminum wire monomer stranded and compacted structures; the single aluminum wire body in the aluminum wire combination body has the same twisting direction as the twisting direction of the peripheral layer. The utility model has the advantages that: the cable has the advantages of high strength, small outer diameter and high current carrying, can increase the laying distance, saves the investment cost, and is particularly suitable for water-blocking cables for urban insulated overhead lines.

Description

Energy-saving low-consumption material-stranding compact aluminum conductor

Technical Field

The utility model relates to a power cable technical field especially relates to an energy-conserving low consumptive material transposition sticiss aluminium conductor.

Background

At present, along with the development of cities, the greening contradiction between overhead lines and lines brings great threat to safe power supply, but the problems of insufficient funds and difficult underground excavation exist in the process of handling the overhead lines in many areas, and for the problems, the countries also popularize and apply the overhead insulated cables. The overhead insulated cable has the problems of large span, large fall, large wind load, ice and snow coverage and the like during erection, and the core part of the inner conductor generally adopts an aluminum-clad steel wire for improving the strength. Chinese patent application No. 201820837342.2 discloses a high strength aluminum clad steel core compacted conductor, and the concrete structure is: including strengthening core and coating, strengthen in the core setting and the cavity that the coating formed, strengthen the core and form by the transposition of a plurality of high strength aluminium clad steel wires, the coating forms and sticiss on strengthening the core for sectorial aluminium wire combination by a plurality of cross-sections. The structure disclosed in this application has the following drawbacks: 1. only a compact structure is arranged among the aluminum wires, and the formed cable core has larger size under the condition of the same specification; 2. when the cable is damaged, the stress at the damaged part is concentrated, the aluminum wire monomer can be quickly damaged, and if the aluminum wire monomer is not detected and maintained in time, the tensile strength of the cable can be greatly reduced; 3. the cable can not block water, and after the cable is damaged, water invades into the cable from the damaged part, and then goes deep into the inside clearance of cable, along the vertical extension of cable, leads to the unable use of major length cable, and the replacement cost is higher.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides an energy-conserving low consumptive material transposition sticiss aluminium conductor.

In order to realize the purpose, the technical scheme of the utility model is that: an energy-saving low-consumption stranded compacted aluminum conductor comprises a central layer and a peripheral layer, wherein the central layer is a round aluminum-clad steel wire; the peripheral layers are multiple layers and are sequentially stranded and tightly pressed on the central layer, and the stranding directions of the adjacent peripheral layers are opposite; each peripheral layer comprises a plurality of fan-shaped aluminum wire assemblies, and each aluminum wire assembly is of a plurality of aluminum wire monomer stranded and compacted structures; the single aluminum wire body in the aluminum wire combination body has the same twisting direction as the twisting direction of the peripheral layer.

Preferably, the aluminum wire monomer in the aluminum wire combination body is stranded with water-blocking powder.

Preferably, a water blocking yarn is twisted in a gap between the aluminum wire assemblies of each peripheral layer.

The utility model has the advantages that: 1. the high-strength aluminum-clad steel wire central layer is adopted, so that the strength is high, the laying distance can be increased, and the investment cost is reduced; in addition, the aluminum conductor has high filling coefficient, small outer diameter and strong current carrying capacity under the same specification, can greatly reduce the outer diameter of the cable, further reduce the using amount of a cable coating material, save resources and energy sources and reduce the production cost, and simultaneously improves the wind pressure resistance and the ice and snow accumulation resistance performance strength due to the reduction of the outer diameter of the cable, so that the aluminum conductor is particularly suitable for a water-blocking cable for an urban insulated overhead line; 2. the twisting direction of the adjacent peripheral layers is opposite, so that the whole conductor structure is more compact; the aluminum wire assembly is a structure formed by twisting and pressing a plurality of aluminum wire monomers; the twisting direction of the aluminum wire monomer in the aluminum wire combination body is the same as that of the peripheral layer where the aluminum wire monomer is positioned, and the aluminum wire monomer is twisted and embedded with the peripheral layer, so that the structure is higher and firmer; when the conductor is damaged locally, the influence on the overall tensile strength is small; 3. the aluminum wire assemblies are stranded with water-blocking powder through the powder box or the powder spraying device, and water-blocking yarns are stranded in gaps among the aluminum wire assemblies on each peripheral layer.

Drawings

Fig. 1 is the utility model discloses an energy-conserving low consumptive material transposition compresses tightly aluminium conductor structure schematic diagram.

Fig. 2 is a partially enlarged view of portion C of fig. 1.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

Example 1

An energy-saving and low-material-consumption stranding compaction aluminum conductor shown in fig. 1 and fig. 2 comprises a central layer 1 and a peripheral layer 2, wherein the central layer 1 is a round aluminum-clad steel wire; the peripheral layers 2 are three layers and are sequentially twisted and pressed on the central layer 1, and the twisting directions of the adjacent peripheral layers are opposite; each peripheral layer comprises a plurality of fan-shaped aluminum wire assemblies 3, and each aluminum wire assembly 3 is a structure formed by twisting and compressing a plurality of aluminum wire monomers; the twisting direction of the aluminum wire monomer in the aluminum wire combination body is the same as that of the peripheral layer where the aluminum wire monomer is located, an arrow A in the figure 1 is the twisting direction of the peripheral layer, and an arrow B is the twisting direction of the aluminum wire monomer in the aluminum wire combination body.

In order to improve the water-blocking performance, the aluminum wire monomers in the aluminum wire assembly 3 are stranded with water-blocking powder. Water-blocking yarns 4 are twisted in gaps between the aluminum wire assemblies 3 of each peripheral layer 2.

The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.

Claims

1. The utility model provides an energy-conserving low consumptive material transposition sticiss aluminium conductor, includes centre stratum and periphery layer, its characterized in that: the central layer is a circular aluminum-clad steel wire; the peripheral layers are multiple layers and are sequentially stranded and tightly pressed on the central layer, and the stranding directions of the adjacent peripheral layers are opposite; each peripheral layer comprises a plurality of fan-shaped aluminum wire assemblies, and each aluminum wire assembly is of a plurality of aluminum wire monomer stranded and compacted structures; the single aluminum wire body in the aluminum wire combination body has the same twisting direction as the twisting direction of the peripheral layer.

2. The energy-saving low-consumable stranded compacted aluminum conductor of claim 1, wherein: and the aluminum wire monomer in the aluminum wire combination body is stranded with water-blocking powder.

3. The energy-saving low-consumable stranded compacted aluminum conductor of claim 1, wherein: and water-blocking yarns are stranded in gaps among the aluminum wire assemblies of each peripheral layer.