CN217955469U - Flexible overhead insulated cable - Google Patents

Abstract

The utility model belongs to the technical field of aerial insulated cables, in particular to a soft aerial insulated cable, which comprises a conductive wire core 1, a single-layer conductor layer 2 formed by twisting wire harnesses 6, a single-layer conductor layer A3 formed by twisting wire harnesses 6 and wrapped outside the conductor layer 2, a wrapping layer 4 wrapped outside the conductor layer A3, and a first wrapping layer 5 wrapped outside the wrapping layer 4; the pencil 6 is restrainted the hank by 8 of a plurality of thin annealing soft copper wires and is constituteed, the utility model provides a current overhead insulated cable hardness too high, the difficult problem of installing and using.

Description

Flexible overhead insulated cable

Technical Field

The utility model belongs to the technical field of built on stilts insulated cable, especially, relate to a flexible type built on stilts insulated cable.

Background

An overhead insulated cable is an overhead special cable extruded with an insulating protective layer, and is a power transmission mode between an overhead conductor and an underground cable.

For example, chinese utility model patent CN212461230U discloses an aerial insulated cable that can increase capacity, including insulating layer one, first single core cable, the single core cable of second and the single core cable of third, an inside first single core cable that is equipped with of insulating layer, first single core cable below is equipped with the single core cable of second, the single core cable right side of second conductive core is equipped with the single core cable of third, be equipped with the bracing piece between first conductive core, second conductive core and the third conductive core, the outer circumferential surface of bracing piece is equipped with the support, be equipped with the filler between first conductive core, second conductive core and third conductive core and the support. This cable sets up the bracing piece between the inside conductive core of insulating layer, and the cable is difficult for bending deformation, consequently when laying this aerial [ insulated ] cable, this cable is difficult to be connected with transformer or converter.

For another example, chinese utility model CN201307438Y discloses a flexible reinforced overhead insulated cable, which includes a plurality of twisted aluminum cores and an insulating layer coated outside the aluminum cores, and is characterized in that: a plurality of thin steel wires are arranged in the gap between the aluminum core and the insulating layer, and the diameter of each thin steel wire is 0.6-1.2 mm. The advantages are that: because the clearance between the aluminum core and the insulating layer is provided with a plurality of thin steel wires, the single steel core arranged in the center of the existing reinforced overhead insulated cable is eliminated. The cable is provided with a plurality of thin steel wires at the gap between the aluminum core and the insulating layer, so that the manufacturing cost of manufacturing the cable is increased, and the cable is not suitable for being connected with a transformer or a converter.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a built on stilts insulated cable of soft type has solved current built on stilts insulated cable hardness too high, the difficult problem of installing and using.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a flexible overhead insulated cable, which comprises a plurality of conductor layers formed by twisting wire harnesses, wherein the outer part of each conductor layer is wrapped by a single-layer conductor layer A formed by twisting wire harnesses; the wire harness is formed by stranding fine annealed soft copper wire bundles.

The utility model provides a soft overhead insulated cable, which comprises a single-layer conductor layer formed by twisting wire harnesses and wrapped outside a conductive wire core, a single-layer conductor layer A formed by twisting wire harnesses and wrapped outside the conductor layer, a wrapping layer wrapped outside the conductor layer A, a second extrusion layer wrapped outside the wrapping layer, and a first extrusion layer wrapped outside the second extrusion layer; the wire harness is formed by twisting a plurality of thin annealed soft copper wire bundles.

Furthermore, the conductive wire core is formed by twisting a group of wire harnesses, and the conductor layer A are formed by twisting a plurality of groups of wire harnesses.

Furthermore, the material of the wrapping layer is a semiconductive nylon belt, and the twisting direction of the semiconductive nylon belt is opposite to that of the conductor layer A.

Further, the first extrusion layer is an insulating layer.

Further, the twisting direction of the conductive wire core is opposite to that of the conductor layer, and the twisting direction of the conductor layer is opposite to that of the conductor layer A.

Further, the wiring harness of the conductive wire core and the wiring harness of the conductive layer are opposite in twisting direction, and the wiring harness of the conductive layer A are opposite in twisting direction.

Further, the second extrusion layer is a non-metallic semiconducting layer.

Compared with the prior art, the utility model provides a soft type aerial insulated cable beneficial effect as follows:

1. the utility model relates to an among the aerial insulated cable of soft type, because the pencil of cable is become by thin annealing soft copper wire bundle hank, thin annealing soft copper wire bundle is softer than ordinary pencil, and aerial insulated cable is more convenient when the installation.

2. The utility model relates to an among the built on stilts insulated cable of soft type, first layer conductor layer and second floor conductor layer all are single layer construction, simple structure, and the cable of being convenient for is crooked when transformer or converter are connected, shortens installation time. The engineering efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic cross-sectional structure view of a flexible overhead insulated cable according to the present invention;

fig. 2 is a schematic cross-sectional structure diagram of a flexible overhead insulated cable according to the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-a conductive wire core; 2-a conductor layer; 3-conductor layer A; 4-wrapping a covering; 5-a first extrusion coating; 6-a wire harness; 7-second extrusion coating; 8-fine annealed soft copper wire.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example 1:

as shown in fig. 1, an embodiment of the present application provides a flexible overhead insulated cable, including a conductive wire core 1, a single-layer conductor layer 2 formed by twisting wire harnesses 6, a single-layer conductor layer A3 formed by twisting wire harnesses 6, a wrapping layer 4 wrapped outside the conductor layer A3, the wrapping layer 4 being a semi-conductive nylon tape layer, a twisting direction of which is opposite to that of the conductor layer A3, the semi-conductive nylon tape layer being capable of preventing an extruded layer from being embedded into a conductor gap and rounding the cable; a first extrusion covering layer 5 is extruded outside the wrapping layer 4, the first extrusion covering layer 5 is an insulating layer, and the conductive wire core 1, the conductive layer 2, the conductive layer A3, the wrapping layer 4 and the first extrusion covering layer 5 are sequentially concentrically arranged from inside to outside along the inner diameter to form a cable with a circular cross section; the wire harness 6 is formed by twisting 8 bundles of fine annealed soft copper wires, the conductive wire core 1 is formed by twisting one group of wire harnesses 6, the conductive layer 2 and the conductive layer A3 are formed by twisting a plurality of groups of wire harness 6, each wire harness 6 and each copper wire are uniformly stressed and are not easy to break when the cable is bent, so that the wire harness 6 is softer than the common wire harness 6, the formed cable is more convenient to bend than the traditional cable, and the cable is easy to install when being connected with a transformer or a converter; the stranding direction of the conductive wire core 1 and the conductive layer 2 is opposite, the stranding direction of the conductive layer 2 and the stranding direction of the conductive layer A3 is opposite, the stranding direction of the wire harness 6 of the conductive wire core 1 and the stranding direction of the wire harness 6 of the conductive layer 2 are opposite, and the stranding direction of the wire harness 6 of the conductive layer 2 and the stranding direction of the wire harness 6 of the conductive layer A3 are opposite.

Example 2:

as shown in fig. 2, the structure, connection, position and assembly of the present embodiment are the same as those of embodiment 1; the present example differs from example 1 in that: the embodiment of the application provides an aerial insulated cable of soft type sets up the crowded covering 7 of second around covering 4 and the first crowded covering 5 between, and the crowded covering 7 of second is nonmetal semi-conductive layer, at the insulating layer with around crowded non-metal semi-conductive layer of covering between 4, can avoid partial discharge's production effectively.

The above-mentioned embodiments are only described for the preferred embodiments of the present invention, but not for limiting the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the device claims of the present invention.

Claims (8)

1. The utility model provides a built on stilts insulated cable of soft type which characterized in that: the conductive wire comprises a conductive wire core (1), a single-layer conductor layer (2) formed by twisting wire harnesses (6) are wrapped outside the conductive wire core (1), a single-layer conductor layer A (3) formed by twisting the wire harnesses (6) is wrapped outside the conductor layer (2), a wrapping layer (4) is wrapped outside the conductor layer A (3), and a first extruding and covering layer (5) is wrapped outside the wrapping layer (4); the wire harness (6) is formed by bunching a plurality of thin annealed soft copper wires (8).

2. The utility model provides a built on stilts insulated cable of soft type which characterized in that: the conductive wire comprises a conductive wire core (1), a single-layer conductor layer (2) formed by twisting wire harnesses (6) in a wrapping mode, a single-layer conductor layer A (3) formed by twisting the wire harnesses (6) in a wrapping mode is wrapped outside the conductor layer (2), a wrapping layer (4) is wrapped outside the conductor layer A (3), a second extruding and wrapping layer (7) is wrapped outside the wrapping layer (4), and a first extruding and wrapping layer (5) is wrapped outside the second extruding and wrapping layer (7); the wire harness (6) is formed by bunching a plurality of thin annealed soft copper wires (8).

3. A flexible overhead insulated cable according to claim 1 or 2, characterized in that: the conductive wire core (1) is formed by twisting a group of wire harnesses (6), and the conductive layer (2) and the conductive layer A (3) are formed by twisting a plurality of groups of wire harnesses (6).

4. A flexible overhead insulated cable according to claim 1 or 2, characterized in that: the material that winds the package around covering (4) is semi-conductive nylon tape, its around covering (4) transposition direction with conductor layer A (3) are opposite.

5. A flexible overhead insulated cable according to claim 1 or 2, characterized in that: the first extrusion coating layer (5) is an insulating layer.

6. A flexible overhead insulated cable according to claim 1 or 2, characterized in that: the conductive wire core (1) and the conductive layer (2) are oppositely twisted, and the conductive layer (2) and the conductive layer A (3) are oppositely twisted.

7. A flexible overhead insulated cable according to claim 1 or 2, characterized in that: the twisting direction of the wire harness (6) of the conductive wire core (1) is opposite to that of the wire harness (6) of the conductive layer (2), and the twisting direction of the wire harness (6) of the conductive layer (2) is opposite to that of the wire harness (6) of the conductive layer A (3).

8. The flexible overhead insulated cable of claim 2, wherein: the second extrusion coating layer (7) is a non-metallic semi-conducting layer.

Images