CN105896012A

CN105896012A - Radio frequency coaxial cable with compressed stranded conductor structure

Info

Publication number: CN105896012A
Application number: CN201610272391.1A
Authority: CN
Inventors: 沈小平; 周江
Original assignee: Jiangsu Tongding Optic Electronic Stock Co Ltd
Current assignee: Jiangsu Tongding Optic Electronic Stock Co Ltd
Priority date: 2016-04-27
Filing date: 2016-04-27
Publication date: 2016-08-24

Abstract

The invention provides a radio frequency coaxial cable with a compressed stranded conductor structure, and the cable comprises an internal conductor, an insulating layer, an external conductor and an external sheath from the inside to the outside. The internal conductor is formed by the twisting of a plurality of oxygen-free copper wires, and there is no gap between the oxygen-free copper wires. The cross section of the internal conductor is in a regular hexagon structure. The insulating layer is a high-density polyethylene foaming layer. The external conductor is made of copper, aluminium or steel. The external sheath is a polyethylene sheath or a halogen-free low-smoke flame-retardant sheath. The twisting mode of the internal conductor is a compressed-type production mode, and there is no gap between the oxygen-free copper wires. Compared with a single-solid-conductor coaxial cable, the cable is low in construction cost, and there is no gap between the twisted copper wires, thereby effectively restraining the corrosion, caused by the wet air or liquid between the copper wires, of the copper wires, and prolonging the service life. The cable is simple in manufacturing and production technology, is compact in structure, is rounded, is high in mechanical strength, is good in bending performance, is small in attenuation, is small in transmission loss, is high in transmission efficiency, and is excellent in anti-fatigue performance.

Description

A kind of radio frequency coaxial-cable with compacted stranded conductor structure

Technical field

The invention belongs to field of cable technology, especially relates to one and has compacted stranded conductor structure Radio frequency coaxial-cable.

Background technology

Radio frequency coaxial-cable of the prior art, the structure of inner wire mainly has two kinds, and one is to use list The solid inner conductor structure of root, the inner wire of this kind of structure is the most flexible, flexible poor, is unfavorable for mounting and installation, And it is difficulty with the production of long length.And another kind inner wire is the lay configuration using non-compacting pressing, The inner wire of this structure is flexible, flexible preferably, but easily occur in BENDING PROCESS stranded conductor split seam and Pine stock phenomenon, and because there is gap between stranded conductor, often there is the problems such as conductor corrosion, these are all The construction of cable can be damaged, affect the transmission performance of signal.

Summary of the invention

In view of this, the invention is directed to a kind of radio-frequency (RF) coaxial with compacted stranded conductor structure Cable, to solve that existing radio frequency coaxial-cable flexibility is poor, the problem such as conductor easy-to-rust, service life is short.

For reaching above-mentioned purpose, the technical scheme of the invention is achieved in that

A kind of radio frequency coaxial-cable with compacted stranded conductor structure, including set gradually from inside to outside Inner wire, insulating barrier, outer conductor and oversheath；Described inner wire is formed by several oxygen-free copper-wires are stranded, Between each oxygen-free copper-wire seamless；Described inner wire cross section is regular hexagon structure.

Further, described inner wire is formed by seven oxygen-free copper-wires are stranded；

Further, the copper free wire being twisted into described inner wire is arranged to double-layer structure, including the one of internal layer Root copper free wire and along the uniform six roots of sensation copper free wire of the copper free wire circumferencial direction of internal layer.

Further, described insulating barrier is high density polyethylene (HDPE) foaming layer.

Further, described outer conductor uses copper, aluminum or steel.

Further, described oversheath is pe sheath or LSOH anti-flaming sheath.

Relative to prior art, the invention has the advantage that

Production technology is simple, has close structure, rounding, mechanical strength height, good bending property, decay Little, loss is little, efficiency of transmission is high, anti-fatigue performance is superior, can bear bigger impact and load, Will not produce and split the advantage such as seam and pine stock phenomenon, service life is long.

Accompanying drawing explanation

The accompanying drawing of the part constituting the invention is used for providing being further appreciated by the invention, The schematic description and description of the invention is used for explaining the invention, is not intended that this The improper restriction of bright creation.In the accompanying drawings:

Fig. 1 is the structural representation of the invention.

Description of reference numerals:

1-inner wire, 2-insulating barrier, 3-outer conductor, 4-oversheath.

Detailed description of the invention

It should be noted that in the case of not conflicting, in embodiment in the invention and embodiment Feature can be mutually combined.

In the description of the invention, it is to be understood that term " " center ", " longitudinally ", " horizontal stroke To ", " on ", D score, "front", "rear", "left", "right", " vertically ", " water Flat ", the orientation that indicates of " top ", " end ", " interior ", " outward " etc. or position relationship be based on attached Orientation shown in figure or position relationship, be for only for ease of description the invention and simplify description, and not Be instruction or the hint device of indication or element must have specific orientation, with specific azimuth configuration and Operation, therefore it is not intended that restriction to the invention.Additionally, term " first ", " second " Etc. being only used for describing purpose, and it is not intended that instruction or hint relative importance or implicit indicate indication The quantity of the technical characteristic shown.Thus, the feature defining " first ", " second " etc. can be expressed Or implicitly include one or more this feature.In the description of the invention, unless otherwise Illustrating, " multiple " are meant that two or more.

In the description of the invention, it should be noted that unless otherwise clearly defined and limited, Term " is installed ", " being connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing, Can also be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection； Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the company of two element internals Logical.For the ordinary skill in the art, can understand that above-mentioned term is at this by concrete condition Concrete meaning in innovation and creation.

Describe the invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.

A kind of radio frequency coaxial-cable with compacted stranded conductor structure, as it is shown in figure 1, include by interior and Inner wire 1, insulating barrier 2, outer conductor 3 and the oversheath 4 set gradually outward；Described inner wire 1 is by counting Root oxygen-free copper-wire is stranded to be formed, seamless between each oxygen-free copper-wire；Described inner wire 1 cross section is positive six limits Shape structure.It is pointed out that inner wire 1 cross section uses regular hexagon structure, space can be saved, Making the compacting of stranded copper cash easy closed seamless gap, space availability ratio is high.

Wherein, described inner wire 1 is formed by seven oxygen-free copper-wires are stranded；Described copper free wire is arranged to two Rotating fields, a copper free wire including internal layer and the copper free wire circumferencial direction along internal layer uniform six Root copper free wire.Compare the copper cash composition of other quantity, have close structure, rounding, mechanical strength high, Good bending property, decay little, loss is little, efficiency of transmission is high, anti-fatigue performance is superior, can bear Bigger impact and load, will not produce and split the advantage such as seam and pine stock phenomenon.

It should be noted that the mode of production of inner wire stranded employing compacting pressing, seamless between each oxygen-free copper-wire Gap, not only cost is low relative to the coaxial cable of single solid conductors, and seamless between twisted copper wires, has Effect reduces the humid air or the liquid corrosion to copper cash being mingled with in the middle of copper cash, and service life is long.

Wherein, described insulating barrier 2 is high density polyethylene (HDPE) foaming layer, cable dielectric loss little, decay and The stable performances such as return loss, mechanical strength is high.

Wherein, described outer conductor 3 uses copper, aluminum or steel, and shield effectiveness is good, signal can be effectively ensured and pass Defeated stablizes, and is not disturbed by other external world.

Wherein, described oversheath 4 is pe sheath or LSOH anti-flaming sheath.Cable have heatproof, Moistureproof and waterproof performance, and internal cable core can be protected exempt from external impact and damage.Furthermore it is also possible to protect outside Between set and outer conductor, steel-tape armouring layer is set, to improve anti-extrusion, the shock resistance of cable.

When manufacturing, after oxygen-free copper-wire uses the mode of production of compacting pressing be twisted into inner wire 1, Use material foaming technique to be coated with a layer insulating 2 outside inner wire, use the metal materials such as copper, aluminum, steel Utilize welding embossing techniques at one layer of outer conductor 3 of insulating barrier outer cladding, according to the needs of use occasion, Layer of polyethylene sheath or LSOH anti-flaming sheath is extruded outside outer conductor.

This cable manufacturing process is simple, have close structure, rounding, mechanical strength height, good bending property, Decay little, loss is little, efficiency of transmission is high, anti-fatigue performance is superior, can bear bigger impact with Load, will not produce and split the advantage such as seam and pine stock phenomenon, and service life is long.

The foregoing is only the preferred embodiment of the invention, not in order to limit present invention wound Make, within all spirit in the invention and principle, any modification, equivalent substitution and improvement made Deng, within should be included in the protection domain of the invention.

Claims

1. a radio frequency coaxial-cable with compacted stranded conductor structure, it is characterised in that: include by Interior and outer inner wire, insulating barrier, outer conductor and the oversheath set gradually；Described inner wire is by several nothings Oxygen copper cash is stranded to be formed, seamless between each oxygen-free copper-wire；Described inner wire cross section is regular hexagon structure.

A kind of radio frequency coaxial-cable with compacted stranded conductor structure the most according to claim 1, It is characterized in that: described inner wire is formed by seven oxygen-free copper-wires are stranded.

A kind of radio frequency coaxial-cable with compacted stranded conductor structure the most according to claim 2, It is characterized in that: the copper free wire being twisted into described inner wire is arranged to double-layer structure, including the one of internal layer Root copper free wire and along the uniform six roots of sensation copper free wire of the copper free wire circumferencial direction of internal layer.

A kind of radio frequency coaxial-cable with compacted stranded conductor structure the most according to claim 1, It is characterized in that: described insulating barrier is high density polyethylene (HDPE) foaming layer.

A kind of radio frequency coaxial-cable with compacted stranded conductor structure the most according to claim 1, It is characterized in that: described outer conductor uses copper, aluminum or steel.

A kind of radio frequency coaxial-cable with compacted stranded conductor structure the most according to claim 1, It is characterized in that: described oversheath is pe sheath or LSOH anti-flaming sheath.