CN212113265U

CN212113265U - Flexible cable

Info

Publication number: CN212113265U
Application number: CN202020964066.3U
Authority: CN
Inventors: 程洪建; 唐波; 田亚飞; 杨子仪; 曹昕; 郭秋霞; 刘少新
Original assignee: Guangdong Zhongbao Cable Co ltd
Current assignee: Guangdong Zhongbao Cable Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-12-08
Anticipated expiration: 2030-05-29

Abstract

The utility model relates to the technical field of cables, a flexible cable is disclosed, which comprises at least two cable cores and a wrapping layer wrapping the cable cores into a whole, wherein an insulating layer is extruded on the appearance of each cable core, a waterproof layer and an ultraviolet-resistant outer sheath layer are sequentially overlapped on the appearance of the wrapping layer from inside to outside, and the insulating layer, the waterproof layer and the ultraviolet-resistant outer sheath layer are elastomer layers; each cable core consists of a plurality of stranded wire groups which are mutually stranded, each stranded wire group comprises a first wire group and a plurality of second wire groups which are annularly arranged on the surface of the first wire group around the center of the first wire group, and the first wire group and the second wire groups are stranded; the first lead group is formed by twisting a plurality of copper leads in a bundle mode, and the second lead group is formed by twisting a plurality of copper leads in a bundle mode. The utility model provides a flexible cable to reach the purpose that the compliance is good and be convenient for lay.

Description

Flexible cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a soft cable.

Background

At present, in an electric power system, a cable is widely used due to advantages of excellent power transmission performance and small occupied space. In the process of laying and using the cable, the bending radius of the cable is often required to be set to be small, but the cable is often cracked due to poor flexibility of the cable, so that the service life of the cable is shortened.

Disclosure of Invention

The utility model aims at: the utility model provides a flexible cable to reach the purpose that the compliance is good and be convenient for lay.

In order to achieve the purpose, the utility model provides a flexible cable, it includes at least two cable cores and wraps up each cable core in the band layer of an organic whole, the outward appearance of each cable core is crowded to be wrapped up with the insulating layer, the outward appearance of band layer is folded in proper order from inside to outside and is equipped with waterproof layer and ultraviolet resistance oversheath layer, insulating layer, waterproof layer and ultraviolet resistance oversheath layer are the elastomer layer;

each cable core consists of a plurality of stranded wire groups which are mutually stranded, each stranded wire group comprises a first wire group and a plurality of second wire groups which are annularly arranged on the surface of the first wire group around the center of the first wire group, and the first wire group and the second wire groups are stranded;

the first lead group is formed by twisting a plurality of copper leads in a bundle mode, and the second lead group is formed by twisting a plurality of copper leads in a bundle mode.

Optionally, the twisting directions of the adjacent twisting groups are opposite;

the twisting directions of the adjacent second wire groups in each twisted wire group are the same.

Optionally, the second wire group is formed by twisting 15-55 copper wire bundles, and the diameter of each copper wire is 0.15-0.55 mm.

Optionally, the second wire group is formed by twisting 35 copper wire bundles, and the diameter of each copper wire is 0.35 mm.

Optionally, the insulating layer is a PVC elastomer insulating layer.

Optionally, fillers are disposed between the cable cores and the wrapping tape layer.

Optionally, the filler is elastic rubber.

Optionally, the wrapping layer is a non-woven fabric layer, and the non-woven fabric layer is wrapped on the outer surfaces of the cable cores in an overlapping manner.

Optionally, the waterproof layer is a water-blocking tape, and the water-blocking tape is lapped on the outer surface of the belting layer.

Optionally, the thickness of the water-blocking tape is 1.5 mm-3 mm.

Optionally, the ultraviolet-resistant outer sheath layer is an elastic PVC sheath layer.

The embodiment of the utility model provides a soft cable compares with prior art, and its beneficial effect lies in:

the flexible cable provided by the embodiment of the utility model comprises at least two cable cores, an insulating layer, a waterproof layer and an ultraviolet-resistant outer sheath layer, wherein the insulating layer, the waterproof layer and the ultraviolet-resistant outer sheath layer are all elastic bodies, and the elastic bodies have good flexibility, so that the adaptability of the cable in the complex terrain is greatly improved; each cable core is composed of a plurality of stranded wire groups which are mutually stranded, each stranded wire group comprises a first wire group and a plurality of second wire groups which are annularly arranged on the surface of the first wire group around the center of the first wire group, the first guide column and the second wire groups are formed by stranding a plurality of copper wire bundles, the copper wires have good flexibility, and the adaptability of the cable in laying in a complex terrain is greatly improved;

therefore, the utility model discloses soft cable has good compliance, and its bend radius can become very little to be convenient for carry out laying of cable at various topography, and then have certain popularization nature.

Drawings

Fig. 1 is a schematic structural diagram of a flexible cable according to an embodiment of the present invention.

In the figure, 1, a cable core; 2. an insulating layer; 3. a belting layer; 4. a waterproof layer; 5. an ultraviolet resistant outer jacket layer; 6. and a filler.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

As shown in fig. 1, a preferred embodiment of the present invention provides a flexible cable, which includes at least two cable cores 1 and a wrapping layer 3 wrapping the cable cores 1 into a whole, an insulating layer 2 is extruded on the outer surface of each cable core 1, a waterproof layer 4 and an ultraviolet-resistant outer sheath layer 5 are sequentially stacked on the outer surface of the wrapping layer 3 from inside to outside, and the insulating layer 2, the waterproof layer 4 and the ultraviolet-resistant outer sheath layer 5 are all elastomer layers;

each cable core 1 consists of a plurality of stranded wire groups which are mutually stranded, each stranded wire group comprises a first wire group and a plurality of second wire groups which are annularly arranged on the surface of the first wire group around the center of the first wire group, and the first wire group and the second wire groups are stranded;

the first wire group is formed by twisting a plurality of copper wire bundles, and the second wire group is formed by twisting a plurality of copper wire bundles.

Based on the above arrangement, the flexible cable of the embodiment of the utility model comprises at least two cable cores 1, an insulating layer 2, a waterproof layer 4 and an ultraviolet-resistant outer sheath layer 5, wherein the insulating layer 2, the waterproof layer 4 and the ultraviolet-resistant outer sheath layer 5 are all elastic bodies, and the elastic bodies have good flexibility, so that the adaptability of the cable in laying complex terrains is greatly improved; each cable core 1 is composed of a plurality of stranded wire groups which are mutually stranded, each stranded wire group comprises a first wire group and a plurality of second wire groups which are annularly arranged on the surface of the first wire group around the center of the first wire group, the first guide column and the second wire groups are formed by stranding a plurality of copper wire bundles, the copper wires have good flexibility, and the adaptability of the cable in laying in a complex terrain is greatly improved;

In this embodiment, as shown in fig. 1, the twisting directions of the adjacent twisted wire sets are opposite, and when the cable is pulled, the rotating torques generated between the adjacent twisted wire sets are opposite and can be offset, so that the adjacent twisted wire sets are prevented from rotating in the same direction to cause strand loosening, and meanwhile, the phenomenon of looping when the twisted wires are not pulled can be avoided;

the twisting directions of the adjacent second wire groups in each twisting group are the same, so that the bending performance of the second wire groups is improved, the size of the cable is reduced, and the light weight of the cable is realized.

In this embodiment, as shown in fig. 1, the second wire group is formed by twisting 15 to 55 copper wire bundles, the diameter of the copper wire is 0.15mm to 0.55mm, and preferably, the second wire group is formed by twisting 35 copper wire bundles, and the diameter of the copper wire is 0.35mm, so that the withstand voltage of the second wire group can be improved.

In this embodiment, as shown in fig. 1, the insulating layer 2 is a PVC elastomer insulating layer 2, and the PVC elastomer insulating layer 2 not only has good insulating performance, but also has good flexibility, so as to improve the flexibility of the cable.

In this embodiment, as shown in fig. 1, the filling bodies 6 are disposed between the cable cores 1 and the wrapping layer 3, and the filling bodies 6 are disposed in the gaps between the cable cores 1 and the wrapping layer 3, so that the stability of the cable in the using process can be improved, and the service life of the cable can be prolonged; in addition, the filling body 6 is elastic rubber which has good flexibility, so that the flexibility of the cable is improved.

In this embodiment, as shown in fig. 1, the belting layer 3 is a non-woven fabric layer, the non-woven fabric layer is lapped on the outer surfaces of the cable cores 1 by non-woven fabric overlapping, and the non-woven fabric has the advantage of good flexibility, so that the flexibility of the cable is improved.

In this embodiment, as shown in fig. 1, the waterproof layer 4 is a water-blocking tape, the water-blocking tape is wrapped on the outer surface of the wrapping layer 3 in an overlapping manner, the thickness of the water-blocking tape is 1.5mm to 3mm, and the water-blocking tape has good waterproof and corrosion-resistant properties, so that the integral waterproof and chemical solvent immersion-resistant capability of the cable is enhanced, and the cable can be used in an environment with water erosion; in addition, the water-blocking tape has good flexibility, so that the flexibility of the cable is improved.

In this embodiment, as shown in fig. 1, the ultraviolet-resistant outer sheath layer 5 is an elastic PVC sheath layer, on one hand, the ultraviolet-resistant outer sheath layer has the advantages of excellent ultraviolet resistance, excellent crack resistance, high safety and high reliability, so that the cable can be used in an environment with direct sunlight; on the other hand, the ultraviolet-resistant outer sheath layer 5 has good flexibility, so that the flexibility of the cable is improved;

preferably, the outer layer of the flexible PVC sheathing layer is black in color to facilitate better uv protection.

To sum up, the flexible cable of the embodiment of the present invention comprises at least two cable cores 1, an insulating layer 2, a waterproof layer 4 and an ultraviolet-resistant outer sheath layer 5, wherein the insulating layer 2, the waterproof layer 4 and the ultraviolet-resistant outer sheath layer 5 are all elastomers, and the elastomers have good flexibility, so that the flexibility of the cable laid in a complex terrain is greatly improved; each cable core 1 is composed of a plurality of stranded wire groups which are mutually stranded, each stranded wire group comprises a first wire group and a plurality of second wire groups which are annularly arranged on the surface of the first wire group around the center of the first wire group, the first guide column and the second wire groups are formed by stranding a plurality of copper wire bundles, the copper wires have good flexibility, and the adaptability of the cable in laying in a complex terrain is greatly improved;

therefore, the utility model discloses the bend radius of soft cable can become very little, has improved the compliance of cable greatly to be convenient for carry out laying of cable at various topography, and then have certain popularization nature.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A flexible cable is characterized by comprising at least two cable cores and a wrapping layer wrapping the cable cores into a whole, wherein an insulating layer is extruded on the outer surface of each cable core, a waterproof layer and an ultraviolet-resistant outer sheath layer are sequentially stacked on the outer surface of the wrapping layer from inside to outside, and the insulating layer, the waterproof layer and the ultraviolet-resistant outer sheath layer are all elastic layers;

2. The flexible cable of claim 1, wherein adjacent said sets of strands are twisted in opposite directions;

3. The flexible cable of claim 2, wherein said second conductor set is formed by twisting about 15 to 55 copper strands, said copper strands having a diameter of about 0.15mm to about 0.55 mm.

4. The flexible cable of claim 3, wherein said second conductor set is formed by twisting 35 strands of copper wire, said copper wire having a diameter of 0.35 mm.

5. The flexible cable of claim 1, wherein said insulating layer is a PVC elastomer insulating layer.

6. The flexible cable of claim 1, wherein a filler is disposed between each of said cable cores and said tape layer.

7. The flexible cable of claim 6, wherein said filler is an elastomeric rubber.

8. The flexible cable of claim 1, wherein the waterproof layer is a water-blocking tape that is wrapped around the outer surface of the wrapping layer.

9. The flexible cable of claim 8, wherein the water-blocking tape has a thickness of 1.5mm to 3 mm.

10. The flexible cable of claim 1, wherein said uv resistant outer jacket layer is an elastomeric PVC jacket layer.