CN217444105U

CN217444105U - Heat-resistant self-supporting light multi-core shielding communication cable

Info

Publication number: CN217444105U
Application number: CN202220295621.7U
Authority: CN
Inventors: 骆超; 王成旺; 李清华; 吴英俊; 蔡长威; 刘书鑫
Original assignee: Zhejiang Zhongda Yuantong Cable Technology Co ltd
Current assignee: Zhejiang Zhongda Yuantong Cable Technology Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-09-16
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses a heat-resistant type self-supporting light multicore shielding communication cable, including interval arrangement's multicore communication sinle silk with bear the stranded conductor and the common cladding is in crowded package oversheath of polyvinyl chloride, crowded package oversheath layer of polyvinyl chloride is formed with slim splice bar on multicore communication sinle silk and the interval section of bearing between the stranded conductor, multicore communication sinle silk includes that a plurality of insulation core and PPS resin core twist jointly constitute the cable core, the outside cladding of cable core has polyester fiber plain weave in proper order around the covering, PPS conductive fiber shielding layer, nylon anticorrosive coating and nylon wire antitorque around the covering, insulation sinle silk includes the inner conductor, crowded package inner insulating layer of fluororesin and the crowded package outer insulating layer of fluororesin. The cable is required based on light and lightweight preparation, and has excellent heat resistance, better self-bearing capacity, excellent torsion resistance, stable shielding effect and better durability.

Description

Heat-resistant self-supporting light multi-core shielding communication cable

Technical Field

The application relates to the technical field of cables, in particular to a heat-resistant self-supporting light multi-core shielding communication cable.

Background

The communication cable is widely used in the construction of a metropolitan area network communication network, the self-supporting multi-core communication cable is mainly installed in an overhead mode, the suspension wire and the cable use the same outer protective layer, and the self-supporting multi-core communication cable is economical, practical and convenient to install and lay. However, the general communication cable has poor self-bearing capacity and insufficient torsion resistance, and the problems of core breaking and shielding layer breaking are easily caused in the installation process, so that the electrical characteristics of normal operation are influenced. The overhead installation working condition environment has certain complexity, is easy to suffer from external signal interference, and can greatly influence the signal transmission characteristic if the cable shielding effect is unstable. In addition, the insulating layer of the common communication cable is mostly made of foamed polyethylene or foamed polypropylene resin, so that the mechanical strength is weak, the heat resistance is low, and the durability is poor.

SUMMERY OF THE UTILITY MODEL

This application is not enough to prior art, and the technical problem that solve provides a heat-resisting type self-supporting light multicore shielding communication cable, and it is required based on light lightweight preparation, has excellent heat resistance, and self bearing capacity is better, and anti-twist performance is excellent, and the shielding effect is stable, and the durability is better.

The present application solves the above-mentioned problems by the following technical solutions.

A heat-resistant self-supporting light multi-core shielding communication cable comprises multi-core communication wire cores and a bearing stranded wire which are arranged at intervals and are jointly coated in a polyvinyl chloride extruded outer sheath layer, the polyvinyl chloride extruded outer sheath layer is provided with a thin connecting rib on a spacing section between the multi-core communication wire core and the bearing stranded wire, the multi-core communication wire core comprises a plurality of insulated wire cores and a PPS resin core material which are twisted together to form a cable core, the cable core is sequentially coated with a polyester fiber plain weave lapping layer, a PPS conductive fiber shielding layer, a nylon anticorrosive layer and a nylon wire anti-torsion lapping layer outside, the insulated wire core comprises an inner conductor, a fluororesin extruded inner insulating layer and a fluororesin extruded outer insulating layer, the thickness of the fluororesin extruded inner insulating layer is not less than that of the fluororesin extruded outer insulating layer, and the thickness of the fluororesin extruded inner insulating layer is 0.02mm to 0.08 mm.

Preferably, the fluororesin-extrusion inner insulating layer and the fluororesin-extrusion outer insulating layer have a total thickness of 0.05mm to 0.14 mm.

Preferably, the inner conductor is formed by co-stranding a plurality of tinned copper monofilaments, and the diameter of each tinned copper monofilament is 0.08mm to 0.15 mm.

Preferably, the bearing stranded wire is formed by co-stranding a stainless steel wire and a plurality of para-type wholly aromatic copolyamide drawn fibers, and the diameter of the stainless steel wire is 0.18mm to 0.3 mm.

Preferably, the thickness of the thin connecting rib is not less than one half of the diameter of the bearing stranded wire.

Preferably, the PPS conductive fiber shielding layer is a cylindrical supporting net body formed by lapping and weaving an inner aramid fiber twisted wire and an outer aramid fiber twisted wire in a reverse spiral mode, a plurality of conductive fiber bundles are uniformly distributed on the supporting net body in the circumferential direction, and the conductive fiber bundles are formed by stranding a plurality of PPS fibers and coating copper conductive coatings.

Preferably, the polyester fiber plain weave lapping layer is of a polyester fiber plain weave one-way spiral lapping and covering lapping structure.

Preferably, the outer surface of the nylon anticorrosive layer is provided with a thermoplastic polyurethane bonding layer.

Preferably, the nylon wire anti-twisting wrapping layer is of a structure that inner and outer double-layer nylon strands are spirally wound and braided in opposite directions, and the winding distances are different.

Preferably, the lay length of the cable core is 15 to 30 times of the outer diameter of the insulated wire core.

The beneficial effect of this application:

1. the double-layer fluororesin co-extrusion structure of the inner and outer insulating layers is extruded by the fluororesin for the insulating wire core, and the total thickness is controlled to be 0.05mm to 0.14mm, so that the insulating layer has excellent heat resistance, the sliding property is kept between the inner and outer insulating layers, the flexibility of the insulating wire core is improved, the insulating layer is prevented from wrinkling and damaging, the reliable electrical property of the insulating wire core is kept, and the durability is better.

2. The PPS resin core material is added in the cable core, and the PPS resin has excellent heat resistance and high mechanical strength, improves the thermal stability of the cable, enhances the mechanical strength, prevents the occurrence of wire breaking and core breaking of the insulated wire core, and has better durability.

3. The PPS conductive fiber shielding layer is beneficial to light weight production and cost reduction, and the cylindrical supporting net body formed by weaving the inner aramid fiber twisted wire and the outer aramid fiber twisted wire has high strength and modulus, so that the flexibility of the cable is better, and the tensile resistance is improved. The conductive fiber bundles are distributed on the supporting net body, are formed by twisting PPS fibers and coating copper conductive coatings, can effectively inhibit interference from external signals, and ensure stable shielding performance.

4. Through the antitorque package of nylon wire with the nylon anticorrosive coating closely fix outside the PPS conductive fiber shielding layer, prevent that PPS conductive fiber shielding layer structure is loose, help reducing PPS conductive fiber shielding layer local stress concentration, improve the antitorque commentaries on classics nature of cable, guarantee the stability of shielding effect.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.

Description of reference numerals:

the cable comprises a 1-multi-core communication cable core, a 2-bearing stranded wire, a 3-polyvinyl chloride extruded outer sheath layer, a 4-thin connecting rib, a 5-insulating cable core, a 6-PPS resin core material, a 7-polyester fiber plain woven cloth wrapping layer, an 8-PPS conductive fiber shielding layer, a 9-nylon anticorrosive layer, a 10-nylon wire anti-twisting wrapping layer, an 11-inner conductor, a 12-fluororesin extruded inner insulating layer and a 13-fluororesin extruded outer insulating layer.

Detailed Description

The terminology used in the description of the embodiments of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the application, as the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, the heat-resistant self-supporting light-weight multi-core shielded communication cable according to the embodiment of the present application includes a multi-core communication core 1 and a carrying stranded wire 2 which are arranged at an interval and are jointly wrapped in a polyvinyl chloride extruded outer sheath layer 3, specifically, the carrying stranded wire 2 is formed by jointly stranding a stainless steel wire and a plurality of para-type wholly aromatic copolyamide drawn fibers, and the diameter of the stainless steel wire is 0.18mm to 0.3 mm. The polyvinyl chloride extruded outer sheath layer 3 is formed with a thin connecting rib 4 on a spacing section between the multi-core communication wire core 1 and the bearing stranded wire 2, and further, the thickness of the thin connecting rib 4 is not less than one half of the diameter of the bearing stranded wire 2. The insulated wire core 5 comprises an inner conductor 11, a fluororesin-extruded inner insulating layer 12 and a fluororesin-extruded outer insulating layer 13, specifically, the inner conductor 11 is formed by jointly twisting a plurality of tinned copper monofilaments, and the diameter of each tinned copper monofilament is 0.08-0.15 mm. The thickness of the fluororesin extruded inner insulating layer 12 is not less than that of the fluororesin extruded outer insulating layer 13, the thickness of the fluororesin extruded inner insulating layer 12 is 0.02mm to 0.08mm, and further, the total thickness of the fluororesin extruded inner insulating layer 12 and the fluororesin extruded outer insulating layer 13 is 0.05mm to 0.14 mm.

The multi-core communication wire core 1 comprises a plurality of insulating wire cores 5 and a PPS resin core material 6 which are jointly twisted to form a cable core, and further, the lay length of the cable core is 15-30 times of the outer diameter of each insulating wire core 5. The cable core is coated with polyester fiber plain weave taped covering 7, PPS conductive fiber shielding layer 8, nylon anticorrosive coating 9 and nylon wire antitorque taped covering 10 in proper order in the outside, and further, the outer surface of nylon anticorrosive coating 9 is equipped with the thermoplastic polyurethane adhesive linkage. In one embodiment, the polyester fiber plain cloth wrapping layer 7 is a polyester fiber plain cloth one-way spiral lapping and wrapping structure. In one embodiment, the PPS conductive fiber shielding layer 8 is formed by reversely spirally lapping and weaving inner and outer layers of aramid twisted wires to form a cylindrical supporting net body, a plurality of conductive fiber bundles are uniformly distributed on the supporting net body in the circumferential direction, and the conductive fiber bundles are formed by stranding a plurality of PPS fibers and coating a copper conductive coating. In one embodiment, the nylon wire anti-twist wrapping layer 10 is formed by weaving inner and outer nylon strands in a reverse spiral winding structure with different winding pitches.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still make modifications or changes to the embodiments described in the foregoing embodiments, or make equivalent substitutions for some features, within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application.

Claims

1. Heat-resistant type self-supporting light multicore shielding communication cable, characterized by: including interval arrangement's multicore communication sinle silk (1) and bear stranded conductor (2) and coat in crowded package oversheath layer of polyvinyl chloride (3) jointly, crowded package oversheath layer of polyvinyl chloride (3) is in multicore communication sinle silk (1) with bear and be formed with slim splice bar (4) on the interval section between stranded conductor (2), multicore communication sinle silk (1) includes that a plurality of insulation core (5) and PPS resin core (6) strand jointly constitute the cable core, the cable core outside is wrapped in proper order and is wrapped polyester fiber plain weave around covering (7), PPS conductive fiber shielding layer (8), nylon anticorrosive coating (9) and nylon wire antitorque around covering (10), insulation sinle silk (5) include inner conductor (11), the crowded package inner insulating layer of fluororesin (12) and the crowded package outer insulating layer of fluororesin (13), the crowded package inner insulating layer of fluororesin (12) thickness is not less than the crowded package outer insulating layer of fluororesin (13) thickness, the thickness of the fluororesin extruded inner insulating layer (12) is 0.02mm to 0.08 mm.

2. The heat resistant self-supporting lightweight multi-core shielded communication cable of claim 1, wherein: the total thickness of the fluororesin extruded inner insulating layer (12) and the fluororesin extruded outer insulating layer (13) is 0.05mm to 0.14 mm.

3. The heat resistant self-supporting lightweight multi-core shielded communication cable of claim 1, wherein: the inner conductor (11) is formed by jointly twisting a plurality of tinned copper monofilaments, and the diameter of each tinned copper monofilament is 0.08-0.15 mm.

4. The heat resistant self-supporting lightweight multi-core shielded communication cable of claim 1, wherein: the bearing stranded wire (2) is formed by jointly stranding a stainless steel wire and a plurality of para-type wholly aromatic copolyamide drawn fibers, and the diameter of the stainless steel wire is 0.18mm to 0.3 mm.

5. The heat resistant self-supporting lightweight multi-core shielded communication cable of claim 1, wherein: the thickness of the thin connecting rib (4) is not less than one half of the diameter of the bearing stranded wire (2).

6. The heat resistant self-supporting lightweight shielded communications cable of claim 1, wherein: PPS conductive fiber shielding layer (8) are inside and outside double-deck aramid fiber twisted wire each other for reverse spiral around the package weave form the cylinder support dictyosome, evenly laid a plurality of conductive fiber bundles in circumference on the support dictyosome, conductive fiber bundle is a plurality of PPS fibre transposition and coats copper conductive coating and form.

7. The heat resistant self-supporting lightweight multi-core shielded communication cable of claim 1, wherein: the polyester fiber plain weave lapping layer (7) is of a polyester fiber plain weave unidirectional spiral lapping and covering lapping structure.

8. The heat resistant self-supporting lightweight multi-core shielded communication cable of claim 1, wherein: the outer surface of the nylon anticorrosive layer (9) is provided with a thermoplastic polyurethane bonding layer.

9. The heat resistant self-supporting lightweight multi-core shielded communication cable of claim 1, wherein: the nylon wire anti-torsion lapping layer (10) is of an inner and outer double-layer nylon strand wire which are in reverse spiral winding weaving structures and have different winding distances.

10. The heat resistant self-supporting lightweight shielded communications cable of claim 1, wherein: the cable core lay length is 15 to 30 times of the outer diameter of the insulated wire core (5).