CN220584953U

CN220584953U - Ultra-light armored impact-resistant cable

Info

Publication number: CN220584953U
Application number: CN202321002682.0U
Authority: CN
Inventors: 秦瑞; 张涛; 曲龙龙; 薛露; 赵晓丽; 贾永胜; 王锋修
Original assignee: Qingdao Hanhe Cable Co ltd
Current assignee: Qingdao Hanhe Cable Co ltd
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2024-03-12
Anticipated expiration: 2033-04-27

Abstract

The application discloses ultra-light armoured cable that shocks resistance belongs to the cable field. The cable has the advantages that the diameter and the weight of the cable are large, the cable cost and the laying cost are increased, and the problems that huge eddy current and hysteresis loss are generated when the single-core cable is armored by steel are solved. In this application, the cable core wire wraps up outward has the outer sheath, and it has the foaming armor to fill between metal shielding layer and the outer sheath, and the foaming armor is by plastic foaming polymer material extrusion shaping, and the space between metal shielding layer and the outer sheath is filled to the foaming armor. The application has the advantages that: the capacity of bearing mechanical external force is improved, the diameter of the cable is reduced, the weight is reduced, and the construction operation is convenient.

Description

Ultra-light armored impact-resistant cable

Technical Field

The utility model relates to an ultra-light armored impact-resistant cable, and belongs to the field of cables.

Background

In the power cable laying process, in order to prevent the cable from being mechanically damaged in the laying or running process, the cable is protected from being complete in structure and electrical safety performance, the service life of the cable is prolonged, and the cable is required to be provided with metal armor. Conventional metal armor is provided in the form of steel tape armor, steel wire armor, and the like.

Because the metal material such as galvanized steel strip or galvanized steel wire is a hard material, in order to avoid direct friction damage to the cable internal insulation, therefore when preparing the armor, an inner lining layer needs to be extruded and formed between the armor and the metal shielding layer of the cable, thus the diameter of the cable is increased, the weight of the cable is increased, and the cable cost and the laying cost are increased. In addition, due to the permanent destruction of the metal armour, once the cable is subjected to a large external mechanical damage, the cable core cannot be restored, and the conductor shield is permanently destroyed. The single-core cable uses steel tape armor or steel wire armor, huge eddy current and hysteresis loss can be generated in an alternating current loop, the current-carrying capacity is reduced, the cable heats, and the service life of the cable is shortened.

Disclosure of Invention

The utility model provides an ultra-light armored impact-resistant cable, which improves the capability of bearing mechanical external force, reduces the diameter of the cable, reduces the weight and is convenient for construction operation.

The technical scheme adopted by the utility model is that the ultra-light armored impact-resistant cable comprises a cable core wire, wherein an outer protective layer (9) is wrapped outside the cable core wire; the cable core wire comprises a conductor (1), a conductor shielding layer (2) is wrapped outside the conductor (1), an insulating layer (3) is wrapped outside the conductor shielding layer (2), an insulating shielding layer (4) is wrapped outside the insulating layer (3), and a metal shielding layer (5) is wrapped outside the insulating shielding layer (4); a foaming armor layer (8) is filled between the metal shielding layer (5) and the outer protective layer (9), the foaming armor layer (8) is formed by extrusion molding of plastic foaming polymer materials, and the foaming armor layer (8) fills a gap between the metal shielding layer (5) and the outer protective layer (9).

Optimally, the ultra-light armored impact-resistant cable is characterized in that the metal shielding layer (5) is formed by overlapping and wrapping soft copper strips or copper wires on the outer surface of the insulating shielding layer (4).

Optimally, the ultra-light armored impact-resistant cable has three cable cores, and the three cable cores are distributed in a delta shape.

Optimally, the ultra-light armored impact-resistant cable is characterized in that a filling layer (6) is arranged between cable core wires, and the filling layer (6) is filled into gaps between the cable core wires along the circumferential direction by rubber strips; a wrapping tape layer (7) is arranged between the filling layer (6) and the outer protective layer (9); the three cable cores and the filling layer (6) are wrapped in the wrapping tape layer (7); the foaming armor layer (8) penetrates through the wrapping belt layer (7) and the filling layer (6) and then penetrates to the surface of the metal shielding layer (5).

Optimally, the ultra-light armored impact-resistant cable is characterized in that the wrapping band layer (7) is formed by overlapping and wrapping a non-woven fabric band on the outer surface of the filling layer (6).

Optimally, the ultra-light armored impact-resistant cable is characterized in that the conductor (1) is formed by twisting and compacting a plurality of strands of round copper wires or aluminum wires.

The application has the advantages that:

in the technical scheme of this application, replace inner liner and the metal armor of current cable through foaming armor, reduced processing procedure, make the diameter of cable reduce, weight reduction, consequently single cable multiplicable length has reduced the intermediate head in the construction, has made things convenient for construction operation, has reduced intensity of labour and installation time.

The foaming armor layer adopts plastic foaming polymer material, has certain softness, and the shock resistance is greatly superior to that of metal material, so the armor layer processed and molded by adopting the material can not only increase the capability of the cable for bearing mechanical external force, but also increase the flexibility of the cable so as to be convenient for installation and use.

Compared with the cable with the armor layer made of metal material, the cable with the armor layer made of plastic foamed polymer material has reduced sensitivity requirements on ground grounding current and resonance, and can not generate corrosion due to induced current

The technical scheme of this application scope is extensive, low pressure, middling pressure and high voltage cable, single core, three cores and multicore cable all can use.

The filling layer is filled into the gaps of the three-core metal shielding insulating wire cores by using the rubber strips, so that the external impact energy is absorbed, and the extrusion impact of the insulating wire cores when external force is applied is reduced.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present application;

fig. 2 is a schematic structural diagram of embodiment 2 of the present application.

Detailed Description

The technical features of the present utility model are further described below with reference to the accompanying drawings and the specific embodiments.

Example 1

As shown in the figure, the ultra-light armored impact-resistant cable in the embodiment adopts a single-core structure, and a conductor (1) adopts a conductor core wire formed by twisting and compacting a plurality of strands of round copper wires or aluminum wires.

The conductor (1) is wrapped with a conductor shielding layer (2), the conductor shielding layer (2) is wrapped with an insulating layer (3), the insulating layer (3) is wrapped with an insulating shielding layer (4), and the insulating shielding layer (4) is wrapped with a metal shielding layer (5). The metal shielding layer (5) is formed by overlapping and wrapping soft copper strips or copper wires on the outer surface of the insulating shielding layer (4).

In this embodiment, a foamed armor layer (8) is filled between the metal shielding layer (5) and the outer sheath layer (9), the foamed armor layer (8) is made of a plastic foamed polymer materialThe extruder is heated to extrude the metal shielding layer 5 of the cable.

In the forming process, firstly, the conductor (1) is tightly pressed into a conductor by twisting a plurality of strands of round copper wires or aluminum wires, and the performance and the appearance meet the specification of GB/T3956-2008 standard. And secondly, producing and wrapping the conductor shielding layer (2), the insulating layer (3) and the insulating shielding layer (4) on the conductor (1) in a three-layer coextrusion mode, wherein the insulating eccentricity is higher than the relevant national standard requirement. The metal shielding layer 5 is lapped and wrapped on the outer surface of the insulating shielding layer (4) by adopting a soft copper belt or a copper wire, and the nominal section of the copper belt or the copper wire meets the requirement of fault current capacity. Thirdly, extruding and molding the foaming armor layer (8) on the metal shielding layer (5) by adopting a plastic foaming polymer material. Finally, the outer protective layer (9) is extruded and molded to form the finished cable.

Example 2

In this embodiment, three cable cores are arranged in a delta shape.

A filling layer (6) is arranged between the cable cores, and the filling layer (6) is filled into gaps between the cable cores along the circumferential direction by rubber strips. The rubber strip used by the filling layer (6) increases the toughness of the cable, avoids the damage to conductors in the cable and prolongs the service life of the cable.

A wrapping tape layer (7) is arranged between the filling layer (6) and the outer protective layer (9), and the wrapping tape layer (7) is formed by overlapping and wrapping a non-woven fabric tape on the outer surface of the filling layer (6). The three cable cores and the filling layer (6) are wrapped in the wrapping tape layer (7).

The foaming armor layer (8) penetrates through the wrapping belt layer (7) and the filling layer (6) and then penetrates to the surface of the metal shielding layer (5). The plastic foaming polymer material adopted by the foaming armor layer (8) ensures that the cable is more stable in the use process and the mechanical property is enhanced.

It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that various changes, modifications, additions and substitutions can be made by those skilled in the art without departing from the spirit and scope of the utility model.

Claims

1. An ultra-light armored impact-resistant cable comprises a cable core wire, wherein an outer protective layer (9) is wrapped outside the cable core wire; the method is characterized in that:

the cable core wire comprises a conductor (1), a conductor shielding layer (2) is wrapped outside the conductor (1), an insulating layer (3) is wrapped outside the conductor shielding layer (2), an insulating shielding layer (4) is wrapped outside the insulating layer (3), and a metal shielding layer (5) is wrapped outside the insulating shielding layer (4); a foaming armor layer (8) is filled between the metal shielding layer (5) and the outer protective layer (9), the foaming armor layer (8) is formed by extrusion molding of plastic foaming polymer materials, and the foaming armor layer (8) fills a gap between the metal shielding layer (5) and the outer protective layer (9);

the number of the cable core wires is three, and the three cable core wires are distributed in a delta shape;

a filling layer (6) is arranged between the cable cores, and the filling layer (6) is filled into gaps between the cable cores along the circumferential direction by rubber strips; a wrapping tape layer (7) is arranged between the filling layer (6) and the outer protective layer (9); the three cable cores and the filling layer (6) are wrapped in the wrapping tape layer (7); the foaming armor layer (8) penetrates through the wrapping belt layer (7) and the filling layer (6) and then penetrates to the surface of the metal shielding layer (5).

2. The ultra-light armored impact resistant cable of claim 1, wherein: the metal shielding layer (5) is formed by overlapping and wrapping soft copper strips or copper wires on the outer surface of the insulating shielding layer (4).

3. The ultra-light armored impact resistant cable of claim 1, wherein: the wrapping band layer (7) is formed by overlapping and wrapping a non-woven fabric band on the outer surface of the filling layer (6).

4. The ultra-light armored impact resistant cable of claim 1, wherein: the conductor (1) is formed by twisting and compacting a plurality of strands of round copper wires or aluminum wires.