CN212782770U

CN212782770U - Multilayer sheath anti ultraviolet shielding armor special cable

Info

Publication number: CN212782770U
Application number: CN202021467259.4U
Authority: CN
Inventors: 王嘉豪; 李斌; 花珺; 刘洁
Original assignee: Jiangsu Shangshang Cable Group Co Ltd
Current assignee: Jiangsu Shangshang Cable Group Co Ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-03-23
Anticipated expiration: 2030-07-23

Abstract

The utility model provides a multilayer sheath ultraviolet protection shielding armor special cable, its structure is: the insulating layer is wrapped by the copper conductor to obtain a wire core, and a plurality of wire cores and the polyester belt layer wrapped after filling and stranding form a cable core; the cable core is wrapped with an aluminum-plastic composite tape layer, a tinned drainage wire is embedded between the cable core and the aluminum-plastic composite tape layer, and the length direction of the tinned drainage wire is consistent with that of the cable; sequentially wrapping an HDPE inner sheath, a nylon material sheath and a PVC inner sheath outside the aluminum-plastic composite belt layer; a zinc-coated steel wire armor layer is wrapped outside the PVC inner sheath, and a non-woven fabric wrapping layer is wrapped outside the zinc-coated steel wire armor layer; an outer sheath made of ultraviolet-proof flame-retardant PVC material wraps the non-woven fabric wrapping layer; the insulating layer is made of cross-linked polyethylene XLPE insulating material; the filling is a non-hygroscopic filling material. The cable has good radial waterproof performance, shielding performance, tensile performance and ultraviolet resistance.

Description

Multilayer sheath anti ultraviolet shielding armor special cable

Technical Field

The utility model relates to a multilayer sheath ultraviolet protection shielding armor special cable is applicable to rated voltage 0.6/1 kV's control cable, belongs to cable technical field.

Background

With the continuous development of science and technology and society, the trend of the complicated cable use environment is continuously strengthened, and the diversification of the cable function needs to be continuously increased. Taking the control of an instrument/control cabinet and the like as an example, the electromagnetic environment of a measured/controlled side on site is relatively complex, and noise waves of other equipment on site enter a measurement/control loop through a control line. In addition, water and ultraviolet rays are the most common adverse natural factors in the use environment, and the waterproof and ultraviolet-resistant properties of the cable are the main problems to be solved on the premise of ensuring the electrical and mechanical properties of the cable.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses a technical scheme as follows:

the utility model provides a multilayer sheath ultraviolet protection shielding armor special cable, its structure is: the insulating layer is wrapped by the copper conductor to obtain a wire core, and a plurality of wire cores and the polyester belt layer wrapped after filling and stranding form a cable core; the cable core is wrapped with an aluminum-plastic composite tape layer, a tinned drainage wire is embedded between the cable core and the aluminum-plastic composite tape layer, and the length direction of the tinned drainage wire is consistent with that of the cable;

sequentially wrapping an HDPE inner sheath, a nylon material sheath and a PVC inner sheath outside the aluminum-plastic composite belt layer; a zinc-coated steel wire armor layer is wrapped outside the PVC inner sheath, and a non-woven fabric wrapping layer is wrapped outside the zinc-coated steel wire armor layer; an outer sheath made of ultraviolet-proof flame-retardant PVC material wraps the non-woven fabric wrapping layer;

the insulating layer is made of cross-linked polyethylene XLPE insulating material;

the filling is a non-hygroscopic filling material.

Further:

2-41 wire cores are arranged; the cross-sectional area of the copper conductor is 0.5mm²～6mm²；

The copper conductor is formed by twisting bare copper monofilaments, and the twisting direction of the bare copper monofilaments is the left direction; the diameter range of the bare copper monofilament is 0.32 mm-1.04 mm, and the diameter range of the copper conductor is 0.9 mm-3.1 mm.

The thinnest point thickness of the insulating layer is more than or equal to 90-0.1 mm of the nominal value;

the polyester tape layer is formed by winding a polyester tape with the nominal thickness of 0.04mm, and the lapping overlapping width is not less than 5 mm;

the nominal thickness of the non-woven fabric lapping layer is 0.2mm, and the lapping overlapping width is not less than 5 mm;

the thinnest point thickness of the outer sheath is more than or equal to 85-0.1 mm of the nominal value.

The non-hygroscopic filling material is a polypropylene reticular tearing film. Tightly filling in the middle of the cable core in the cabling process, and playing a role in improving the roundness of the cable and enhancing the waterproof performance.

Advantageous effects

After the technical scheme is adopted, the utility model discloses following beneficial effect has:

(1) the cable structure has simple and reasonable design: a plurality of cables are circularly arranged and twisted to form the cable, which accords with the national standard and increases the roundness of the cable. And the procedure of multi-layer cabling of the cable is reduced, the processing procedure is simplified and easy to operate, and the production efficiency can be improved.

(2) The crosslinked polyethylene insulating layer which can be prepared by a warm water crosslinking process effectively improves the temperature resistance level and the physical and mechanical properties of the cable, so that the cable has higher mechanical safety in the use process.

(4) The nylon sheath layer has good impact resistance and fatigue stability and does not crack while playing a waterproof role. And good wear resistance and self-lubricity. The anion has good performance, only burns and decomposes at high temperature, and does not catch fire.

(5) The aluminum-plastic composite tape shielding layer can shield an electric field, does not influence other electronic elements, and plays a role in grounding protection through the tinned drainage wire.

(6) The galvanized steel wire armor layer is a mechanical protective layer of the cable, so that the mechanical strength of the cable can be increased, the anti-corrosion capability is improved, and the cable has good tensile property.

(7) The PVC outer sheath material is resistant to chemical corrosion and aging, and has good ultraviolet resistance, low temperature resistance of-40 ℃ and flame retardant property.

The utility model discloses the cable has used the novel environmental protection's block water material and on the basis of new design cable shape structure, uses specific structural parameter in order to reach the effect that improves waterproof, tensile, shielding property, also can be suitable for fields such as track traffic, bridge, special equipment.

Drawings

FIG. 1 is a schematic radial cross-sectional structure of the cable according to the present embodiment;

in the figure: copper conductor 1, insulating layer 2, packing 3, polyester tape layer 4, plastic-aluminum composite belt 5, tin-plated drainage wire 6, HDPE inner sheath 7, nylon material sheath 8, PVC inner sheath 9, zinc-plated steel wire armor 10, non-woven fabrics are around covering 11, oversheath 12.

Detailed Description

As shown in fig. 1, a multilayer sheath ultraviolet-shielding armored special cable is formed by wrapping an insulating layer outside a copper conductor to obtain a wire core, and forming a cable core by wrapping a polyester tape layer after filling and stranding and a plurality of wire cores; the cable core is wrapped with an aluminum-plastic composite tape layer, a tinned drainage wire is embedded between the cable core and the aluminum-plastic composite tape layer, and the length direction of the tinned drainage wire is consistent with that of the cable;

the shielding layer is sequentially wrapped with a high-density polyethylene HDPE inner sheath, a nylon material sheath and a PVC inner sheath; a zinc-coated steel wire armor layer is wrapped outside the PVC inner sheath, and a non-woven fabric wrapping layer is wrapped outside the zinc-coated steel wire armor layer; an outer sheath made of ultraviolet-proof flame-retardant HZ-90PVC material wraps the non-woven fabric wrapping layer; the insulating layer is made of cross-linked polyethylene XLPE insulating material; the filling is a non-hygroscopic filling material.

In this example, the number of cores is 7. The cross-sectional area of the copper conductor is 0.5mm²～6mm²(ii) a The copper conductor is formed by twisting bare copper monofilaments, and the twisting direction of the bare copper monofilaments is the left direction; the diameter range of the bare copper monofilament is 0.32 mm-1.04 mm, and the diameter range of the copper conductor is 0.9 mm-3.1 mm.

The process structure of the cable is as follows:

The non-hygroscopic filling material is formed by a polypropylene reticular tearing film.

During manufacturing, XLPE insulating materials are extruded outside the copper conductors, cable core cabling is filled with non-hygroscopic filling materials, the filling is compact and round, a polyester tape is wrapped around the copper conductors after the filling, an aluminum-plastic composite tape (containing a tinned drainage wire) is longitudinally wrapped around the copper conductors, an HDPE inner sheath is extruded on the copper conductors, a nylon material sheath and a PVC inner sheath are extruded on the copper conductors, galvanized steel wire armoring is adopted outside the PVC inner sheath, a non-woven fabric is wrapped outside the steel wire armoring, and finally an ultraviolet-proof flame-retardant PVC outer sheath is extruded on the copper conductors.

The tinned drainage wire in the cable is used as a shielding wire for reducing electromagnetic interference, leads to a grounding terminal of a control cabinet from the site, and finally gathers to a working grounding busbar to enter a grounding system, wherein the middle part is not grounded.

Claims

1. A multilayer sheath ultraviolet-proof shielding armored special cable is characterized in that a copper conductor is wrapped with an insulating layer to obtain a wire core, and a plurality of wire cores and a polyester tape layer wrapped after filling and stranding form a cable core; the cable core is wrapped with an aluminum-plastic composite tape layer, a tinned drainage wire is embedded between the cable core and the aluminum-plastic composite tape layer, and the length direction of the tinned drainage wire is consistent with that of the cable;

the filling is a non-hygroscopic filling material.

2. The multi-layer sheath ultraviolet-proof shielding armored special cable as claimed in claim 1, wherein the number of the wire cores is 2-41; the cross-sectional area of the copper conductor is 0.5mm²～6mm²；

3. The multi-layer sheath ultraviolet-shielding armored special cable as claimed in claim 1, wherein the thinnest point thickness of the insulating layer is greater than or equal to 90-0.1 mm of the nominal value;

4. The special multi-layer sheathed ultraviolet-shielding armored cable according to claim 1, wherein the non-hygroscopic filler material is a polypropylene mesh tear film.