CN211957236U

CN211957236U - High-insulativity internal overhead cable

Info

Publication number: CN211957236U
Application number: CN202020636134.3U
Authority: CN
Inventors: 何德龙
Original assignee: Jiangsu Xinfeng Cable Co ltd
Current assignee: Jiangsu Xinfeng Cable Co ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-11-17
Anticipated expiration: 2030-04-24

Abstract

The utility model discloses a high-insulation internal overhead cable, which comprises a wear-resistant layer, wherein the inner side of the wear-resistant layer is fixedly connected with a weaving layer, the inner side of the braided layer is fixedly connected with an outer shielding layer, the inner side of the outer shielding layer is fixedly connected with a wrapping layer, a single-wire cable is sleeved inside the wrapping layer, and the single-wire cable is at least provided with six groups, the interior of the single-wire cable comprises a fire-resistant layer, an inner shielding layer, an insulating layer and a metal wire core, the inner side of the fire-resistant layer is fixedly connected with an inner shielding layer, the inner side of the inner shielding layer is fixedly connected with an insulating layer, the inside metal core that has cup jointed of insulating layer, the inside articulated copper core that bears that has of single line cable, the utility model discloses simple structure, the modern design, the structure satisfies service condition to high electrical property, heat-resisting, fire-retardant and high strength property's requirement to have fabulous insulating effect, prolonged the life of cable.

Description

High-insulativity internal overhead cable

Technical Field

The utility model relates to a power cable technical field specifically is a built on stilts formula cable in high insulating nature.

Background

With the rapid development of national economy, the using amount and the application range of the cable used as the main artery of the national economy are larger and larger.

An insulated overhead cable is a common overhead power transmission line, is mainly applied to urban streets, green areas, overhead lines close to buildings and rural wide areas with continuously improved requirements on power supply safety and operation management, and is particularly suitable for dense cities, villages and towns, green areas and other places, but at present, many overhead cables are single in structure, the insulating property needs to be improved, and the structure of a bearing core in the overhead cable is not reasonable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a built on stilts formula cable in high insulating nature to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: including the wearing layer, the inboard fixedly connected with weaving layer of wearing layer, the inboard fixedly connected with outer shielding layer of weaving layer, the inboard fixedly connected with of outer shielding layer winds the covering, single line cable has been cup jointed around covering inside, and single line cable is provided with six groups at least, single line cable is inside including flame retardant coating, internal shield layer, insulating layer and metal sinle silk, the inboard fixedly connected with internal shield layer of flame retardant coating, the inboard fixedly connected with insulating layer in internal shield layer, the metal sinle silk has been cup jointed to inside the insulating layer, the inside articulated bearing copper core that has of single line cable.

Furthermore, the wear-resistant layer adopts a polypropylene insulating sleeve with the wall thickness of 0.3-0.5 mm.

Furthermore, the inside tinned copper wire that adopts of weaving forms in a crisscross way of weaving layer.

Furthermore, the metal wire cores are at least provided with seven groups, and the metal wire cores are fixed in a stranding mode.

Furthermore, the insulating layer is a weather-resistant heat-resistant crosslinked polyethylene insulating layer.

Further, the single-wire cable and the bearing copper core are twisted to form a multi-wire cable.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model fixes the arranged metal wire core in a twisting way, and forms a multi-wire cable between the single-wire cable and the bearing copper core through twisting, so that the maximum current-carrying capacity can be obtained in the use process;

2. the utility model discloses an adopt two-layer shielding layer in inside, namely inner shield layer and outer shielding layer, can weaken the effect of cable internal electromagnetic field, through flame retardant coating and the insulating layer that adopts in inside, make the cable have good fire-resistant, insulating effect, through setting up the bearing copper core in inside, make the structure inside the cable tend to more stable, strengthened the intensity of cable simultaneously;

3. the utility model discloses simple structure, the modern design, the structure satisfies service condition to high electrical property, heat-resisting, fire-retardant and high strength property's requirement to have fabulous insulating effect, prolonged the life of cable.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic diagram of a three-dimensional twisted structure of the metal wire core of the present invention;

fig. 3 is the utility model discloses single line cable transposition spatial structure sketch map.

In FIGS. 1-3: 1. a wear layer; 2. weaving layer; 3. an outer shield layer; 4. wrapping a covering; 5. a single wire cable; 6. a refractory layer; 7. an inner shield layer; 8. an insulating layer; 9. a metal wire core; 10. carrying the copper core.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: comprising a wear resistant layer 1.

Wherein, 1 inboard fixedly connected with weaving layer 2 of wearing layer, 2 inboard fixedly connected with outer shielding layer 3 of weaving layer, 3 inboard fixedly connected with of outer shielding layer are around covering 4.

Wherein, wearing layer 1 can have fabulous wear resistance, and weaving layer 2 has improved the bulk strength of cable for the structure is more stable, and cable that can effectual protection inside around covering 4 has best structural stability.

Wherein, single line cable 5 has been cup jointed around covering 4 inside, and single line cable 5 is provided with six groups at least, single line cable 5 is inside including flame retardant coating 6, internal shield layer 7, insulating layer 8 and metal sinle silk 9, the inboard fixedly connected with internal shield layer 7 of flame retardant coating 6, the inboard fixedly connected with insulating layer 8 of internal shield layer 7, metal sinle silk 9 has been cup jointed inside insulating layer 8.

Wherein, flame retardant coating 6 and insulating layer 8 for the cable has good fire-resistant, insulating effect, makes through the metal core 9 that sets up in inside and can obtain the biggest current-carrying capacity in the use.

Wherein, the single-wire cable 5 is internally articulated with a bearing copper core 10.

Wherein the load-bearing copper core 10 makes the structure inside the cable tend to be more stable, while enhancing the strength of the cable.

Furthermore, the wear-resistant layer 1 is a polypropylene insulating sleeve with the wall thickness of 0.3-0.5 mm.

Wherein, the whole wearability of cable has effectively been improved.

Furthermore, the inside of the braid 2 is formed by weaving tinned copper wires in a staggered manner.

Wherein, make the bulk strength that can improve the cable for the structure is more stable.

Further, the metal wire cores 9 are at least provided with seven groups, and the metal wire cores 9 are fixed in a twisting mode.

Wherein, the largest current-carrying capacity can be obtained in the using process.

Further, the insulating layer 8 is a weather-resistant heat-resistant cross-linked polyethylene insulating layer.

Wherein, the best insulation effect is achieved in the using process.

Further, a multi-wire cable is formed by stranding the single-wire cable 5 and the bearing copper core 10.

The working principle is as follows: during the use, metal core 9 adopts the mode of transposition to fix, and form multi-wire cable through the transposition between single line cable 5 and the bearing copper core 10, make can obtain the biggest current-carrying capacity in the use, through adopting two-layer shielding layer in inside, inner shield layer 7 and outer shielding layer 3 promptly, can weaken the inside electromagnetic field effect of cable, through flame retardant coating 6 and the insulating layer 8 that adopts in inside, make the cable have good fire-resistant, insulating effect, through setting up the bearing copper core 10 in inside, make the inside structure of cable tend to more stable, the intensity of cable has been strengthened simultaneously.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a built on stilts formula cable in high insulating nature, includes wearing layer (1), its characterized in that: the inner side of the wear-resistant layer (1) is fixedly connected with a woven layer (2), the inner side of the woven layer (2) is fixedly connected with an outer shielding layer (3), the inner side of the outer shielding layer (3) is fixedly connected with a winding layer (4), a single-wire cable (5) is sleeved inside the winding layer (4), six groups of the single-wire cable (5) are arranged at least, the inner side of the single-wire cable (5) comprises a fire-resistant layer (6), an inner shielding layer (7), an insulating layer (8) and a metal wire core (9), the inner side of the fire-resistant layer (6) is fixedly connected with the inner shielding layer (7), the inner side of the inner shielding layer (7) is fixedly connected with the insulating layer (8), the metal wire core (9) is sleeved inside the insulating layer (8), and the inner part of the.

2. The high-insulation internal overhead cable according to claim 1, wherein: the wear-resistant layer (1) is a polypropylene insulating sleeve with the wall thickness of 0.3-0.5 mm.

3. The high-insulation internal overhead cable according to claim 1, wherein: the braided layer (2) is formed by interweaving tinned copper wires.

4. The high-insulation internal overhead cable according to claim 1, wherein: the metal wire cores (9) are at least provided with seven groups, and the metal wire cores (9) are fixed in a stranding mode.

5. The high-insulation internal overhead cable according to claim 1, wherein: the insulating layer (8) is a weather-resistant heat-resistant cross-linked polyethylene insulating layer.

6. The high-insulation internal overhead cable according to claim 1, wherein: the single-wire cable (5) and the bearing copper core (10) form a multi-wire cable through twisting.