CN214312683U

CN214312683U - Ultra-light overhead cable

Info

Publication number: CN214312683U
Application number: CN202120380795.9U
Authority: CN
Inventors: 王继超
Original assignee: Henan Hechuang Cable Co ltd
Current assignee: Henan Hechuang Cable Co ltd
Priority date: 2021-02-20
Filing date: 2021-02-20
Publication date: 2021-09-28
Anticipated expiration: 2031-02-20

Abstract

The utility model discloses an ultralight overhead cable, including wire, insulating skin, the wire is wrapped up by the insulating skin, the wire comprises 7 solitary alloy wires, insulating skin includes insulating endothelium, insulating crust, be equipped with the cavity between insulating endothelium, the insulating crust, the alloy wire is aluminium package copper structure, the size of alloy wire is the same, the alloy wire is arranged according to the honeycomb, be equipped with a plurality of diaphragms between insulating endothelium, the insulating crust, the diaphragm with the axis of wire is parallel, the diaphragm will the cavity is separated, be equipped with a plurality of vertical diaphragms between insulating endothelium, the insulating crust, vertical diaphragm is perpendicular with the axis of wire, the diaphragm will the cavity is separated, the cross section of insulating endothelium, insulating crust is the hexagon, the utility model is used for laying of overhead transmission line, light in weight, insulating effectual, solved the problem that the bare wire of overhead transmission cable is unsafe, belt leather cable is heavy in weight.

Description

Ultra-light overhead cable

Technical Field

The utility model relates to a transmission cable technical field specifically is an ultralight aerial [ insulated ] cable.

Background

With the continuous development of infrastructure construction and urbanization in China, the scale of a power grid is increasingly huge, the market prospect of electric wires and cables is wide, and as the breadth of China is wide and various complex terrains such as mountainous regions, plateaus, canyons and basins are covered, when power transmission lines are erected, the distance between two adjacent overhead line iron towers is quite long, the dead weight of the cable is too heavy, the cable is prone to being broken, and the power utilization safety is affected.

In order to reduce the weight of the cable, the high-voltage transmission line generally adopts a bare wire, namely, an insulating layer is not covered on the surface of a metal conductor, and air insulation is utilized, but the power transmission can not be carried out in the mode in urban areas with dense buildings, so that the cable is laid in a partial area by adopting an underground embedding mode, the problem of power transmission safety is solved, the cost of an erection device is saved, the environment is attractive, but the underground laying mode is more troublesome during later-stage maintenance, and the use convenience is lower than that of an overhead cable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the ultra-light overhead cable has the advantages of light weight, good tensile property and good insulation effect, and solves the problems of unsafe overhead bare wires and heavy sheathed cables.

The utility model adopts the technical scheme as follows:

the utility model provides an ultralight aerial cable, includes wire, insulating skin, the wire by insulating skin parcel, the wire comprises 7 solitary alloy wires, insulating skin is including insulating endothelium, insulating crust, be equipped with the cavity between insulating endothelium, the insulating crust.

Further, the alloy wire is of an aluminum-clad copper structure.

Further, the alloy wires have the same size and are arranged in a honeycomb shape.

Furthermore, a plurality of diaphragms are arranged between the insulating inner skin and the insulating outer skin, the diaphragms are parallel to the axis of the lead, and the diaphragms separate the cavities.

Furthermore, a plurality of longitudinal diaphragms are arranged between the insulating inner skin and the insulating outer skin, the longitudinal diaphragms are perpendicular to the axis of the lead, and the longitudinal diaphragms separate the cavities.

Furthermore, the cross sections of the insulating inner skin and the insulating outer skin are hexagonal.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

(1) the alloy wire with the aluminum-clad copper structure is used as a lead, the density of copper is 8.96g/m3, the density of aluminum is 2.7g/m3, and the weight of the aluminum wire is about 1/3 of the weight of a copper wire when the cross sectional area and the length are the same, so that the weight of the lead is greatly reduced, and the dead weight of a cable is obviously reduced;

(2) the insulating skin with the cavity is adopted, and the characteristic that air has good insulating capability is utilized, so that the weight of the insulating skin is obviously reduced on the premise of not changing the total thickness of the insulating skin, and meanwhile, the insulating effect is not obviously reduced;

(3) through setting up diaphragm and vertical diaphragm, cut apart the cavity, strengthened the support ability to insulating crust, insulating crust and insulating endothelium paste when preventing that the cable from receiving the oppression and lead to insulating effect to descend together.

Drawings

Fig. 1 is a front view structure diagram of the present invention.

Fig. 2 is a right side view of the present invention.

The labels in the figure are: 1-alloy wire, 2-insulating inner skin, 3-insulating outer skin, 4-cavity, 5-diaphragm and 6-longitudinal diaphragm.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following detailed description of the present invention is made with reference to the accompanying drawings and examples, and it should be understood that the specific examples described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention.

Example 1

The utility model provides an ultralight aerial cable, includes the wire and the insulating skin of parcel in the wire outside that comprise 7 solitary alloy wires 1, and insulating skin is silica-based rubber material and divide into two-layer, and the inlayer is insulating endothelium 2, and the skin is insulating crust 3, is equipped with cavity 4 between insulating endothelium 2, the insulating crust 3, and insulating endothelium 2's thickness is 1mm, and insulating crust 3's thickness is 0.5mm, and cavity 4 thickness is 2 mm.

The alloy wires 1 are of aluminum-clad copper structures, each alloy wire 1 is the same in size and is a round wire with the diameter of 6mm, the wire core part of each alloy wire 1 is a copper wire with the diameter of 3mm, the outer side of each wire core is wrapped by an aluminum pipe with the thickness of 3mm, compared with a pure copper wire with the diameter of 6mm, the weight of each alloy wire 1 is reduced by about 1/2, 7 alloy wires 1 are arranged in a honeycomb manner, and the connecting line of the centers of the cross sections of the alloy wires 1 is in a regular hexagon shape.

6 transverse diaphragms 5 are uniformly arranged between the insulating inner skin 2 and the insulating outer skin 3, the transverse diaphragms 5 are parallel to the axis of the lead, the cavity 4 is separated by the transverse diaphragms 5, a plurality of longitudinal diaphragms 6 are equidistantly arranged between the insulating inner skin 2 and the insulating outer skin 3 at intervals of 5cm, the longitudinal diaphragms 6 are perpendicular to the axis of the lead, namely the longitudinal diaphragms 6 are perpendicular to the transverse diaphragms 5, and the longitudinal diaphragms 6 continuously separate the cavity 4 into smaller independent cavities.

The cross sections of the insulating inner skin 2 and the insulating outer skin 3 are hexagonal, so that the using amount of the insulating inner skin 2 and the insulating outer skin 3 is reduced compared with the round cross section, and the weight of the insulating skin is further reduced.

The working principle is as follows: in the embodiment, the insulating sheath with the cavity 4 is used for replacing a solid insulating sheath with the same thickness, the insulating capacity is not obviously reduced compared with the solid insulating sheath with the same thickness due to the good insulating capacity of dry air, the weight of the insulating sheath is greatly reduced due to the existence of the cavity 4, the weight of the insulating sheath is reduced on the premise of not changing the insulating performance by arranging the cavity 4 filled with the dry air in the insulating sheath, in addition, a copper-aluminum alloy wire is used for replacing a lead wire made of pure copper, the weight of the lead wire is greatly reduced, the weight of the cable is further reduced, the tensile capacity of the cable is mainly related to the material and the diameter of the lead wire, the tensile capacity of aluminum is relatively close to that of copper, therefore, the tensile capacity of the cable in the embodiment is close to that of a pure copper solid wire cable with the same size, and the weight of the cable with the same length is about 1/2 of the pure copper solid wire cable, when the method is used for laying the power transmission lines, the distance between the iron towers can be greatly increased, the number of the iron towers in the power transmission lines is reduced, and the laying cost and the occupied area are saved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an ultralight aerial cable, includes wire, insulating skin, the wire quilt insulating skin parcel, its characterized in that, the wire comprises 7 solitary alloy wires (1), insulating skin includes insulating endothelium (2), insulating crust (3), be equipped with cavity (4) between insulating endothelium (2), insulating crust (3).

2. Ultra-light overhead cable according to claim 1, characterized in that the alloy wire (1) is of aluminium-clad copper construction.

3. An ultra-light overhead cable according to claim 1, wherein the wires (1) are of the same size, and the wires (1) are arranged in a honeycomb shape.

4. An ultra-light overhead cable as claimed in claim 1, wherein a plurality of diaphragms (5) are arranged between the insulating inner skin (2) and the insulating outer skin (3), the diaphragms (5) are parallel to the axis of the conductor, and the diaphragms (5) separate the cavities (4).

5. The ultra-light overhead cable of claim 1, wherein a plurality of longitudinal diaphragms (6) are arranged between the insulating inner skin (2) and the insulating outer skin (3), the longitudinal diaphragms (6) are perpendicular to the axes of the wires, and the longitudinal diaphragms (6) separate the cavities (4).

6. The ultra-light overhead cable of claim 5, wherein the cross sections of the inner insulating layer (2) and the outer insulating layer (3) are hexagonal.