CN201556466U

CN201556466U - Underground armored aluminium tube coaxial cable

Info

Publication number: CN201556466U
Application number: CN2009201975709U
Authority: CN
Inventors: 帅平跃; 陈晓霖; 朱家兴; 王立忠; 权亚初; 江心平
Original assignee: ZHEJIANG TIANJIE INDUSTRIAL Co Ltd
Current assignee: ZHEJIANG TIANJIE INDUSTRIAL Co Ltd
Priority date: 2009-09-28
Filing date: 2009-09-28
Publication date: 2010-08-18
Anticipated expiration: 2019-09-28

Abstract

The utility model relates to an underground armored aluminium tube coaxial cable which comprises an inner conductor, an insulating layer, an outer conductor, a first outer sheath, an armoring layer and a second outer sheath that are sequentially arranged from inside to outside along radial direction, and the outer conductor is formed by an aluminium tube welded on the insulating layer. The underground armored aluminium tube coaxial cable has the advantages that: 1. an argon arc welding aluminium tube is directly used between the insulating layer and the first outer sheath as the outer conductor, without the preparation of a woven layer, thus saving manufacture process, and promoting the capacity efficiency; and 2. the argon arc welding aluminium tube is directly used between the insulating layer and the first outer sheath as the outer conductor, thus increasing the lateral pressure resistance and tensile strength of the cable; the armoring layer structure can protect the coaxial cable from outside mechanical damage, and can prevent extrusion, rat bite, bullet and gun shot, thus playing a role of protecting the cable; and the underground armored aluminium tube coaxial cable can lead the armoring layer to be accurately grounded, and also can improve the lightening protection performance of the cable.

Description

Buried armouring Aluminum Tube Coaxial Cable

(1) technical field

The utility model relates to a kind of cable, specifically is a kind of armouring Aluminum Tube Coaxial Cable.

(2) background technology

Along with the development of urban redevelopment construction with beautify,, promptly found the city space of ground space, upper space and underground space coordinated development simultaneously in order to reduce the network system of aboveground space.Wherein, making full use of the underground space is that urban melts the chief component of sending out, and sets up the compound arterial grid of public utility in the underground space and unifies facility, and its intersection node is the large-sized multiple layer hypogee.And as the backbone of the television network system of compound arterial grid, also must be from the underground pipe network cabling, therefore, underground armouring Aluminum Tube Coaxial Cable just arises at the historic moment.And coaxial cable, from its version and properties of product, physically foamed pe insulation is optimal technical products, and high frequency performance is good, decay is low, waterproof, protection against the tide, bending radius are few, stable performance, long service life and foam degrees height, save material.But this coaxial cable lays the abominable place of environment under ground portion, is subjected to the plague of rats easily and bites, and directly influences product quality, causes and can't work.For this reason; need satisfy in the equipment facility of these particular surroundingss, coaxial cable need carry out armouring protection, existing buried armouring coaxial cable; the structure composition includes successively; inner wire, insulating barrier, outer conductor, first oversheath, armour, second oversheath, outer conductor is made up of aluminium foil layer and braid, relatively complex manufacturing technology; the cost height; the performance transmission is unstable, and loss is big, and transmission range is short.

(3) summary of the invention

The technical problems to be solved in the utility model provides simple, the stable performance of a kind of manufacture craft, and loss is low, the buried armouring Aluminum Tube Coaxial Cable that cost is low.

For this reason, the utility model is taked following technical scheme:

A kind of buried armouring Aluminum Tube Coaxial Cable, include inner wire, insulating barrier, outer conductor, first oversheath, armour, second oversheath, described inner wire, insulating barrier, outer conductor, first oversheath, armour, second oversheath radially are provided with successively from inside to outside, and described outer conductor is that the aluminum pipe that is welded on insulating barrier constitutes.

Described outer conductor is welded on the insulating barrier by argon arc welding.

The utility model has the advantages that: 1, between the insulating barrier and first oversheath, directly get final product as outer conductor, need not to have saved manufacture craft, the production capacity improved efficiency at the preparation braid with the argon arc welding aluminum pipe; 2, direct argon arc welding aluminum pipe has increased lateral pressure resistant power, the tensile strength of cable as outer conductor between the insulating barrier and first oversheath; 3, the armour structure can protect coaxial cable not to be subjected to extraneous mechanical damage, and the effect of protection cable is played in anti-extrusion, mouse bite preventing, shellproof and gunslinging; Can carry out proper grounding to armour again, can also improve the lightning protection properties of cable; The benefit that armoured cable brings to construction be exactly need not special cable trough can direct-burried, the corner also need not to build in addition cable shaft.4, it is low to have a loss than braided coaxial cable, and transmission range is stable, and transmission range is long, can effectively guarantee the cable transmission quality, prolongation cable useful life; 5, compact conformation, low cost of manufacture, result of use are good.

(4) description of drawings

Fig. 1 is the utility model structure cross-sectional schematic;

Wherein, 1-inner wire, 2-insulating barrier, 3-outer conductor, 4-first oversheath, 5-armour, 6-second oversheath.

(5) specific embodiment

With reference to accompanying drawing 1, a kind of buried armouring Aluminum Tube Coaxial Cable, include inner wire 1, insulating barrier 2, outer conductor 3, first oversheath 4, armour 5, second oversheath 6, described inner wire, insulating barrier, outer conductor, first oversheath, armour, second oversheath radially are provided with successively from inside to outside, and described outer conductor is that the aluminum pipe that is welded on insulating barrier constitutes.Described outer conductor is welded on the insulating barrier by argon arc welding.

Claims

1. buried armouring Aluminum Tube Coaxial Cable, include inner wire, insulating barrier, outer conductor, first oversheath, armour, second oversheath, described inner wire, insulating barrier, outer conductor, first oversheath, armour, second oversheath radially are provided with successively from inside to outside, it is characterized in that: described outer conductor is that the aluminum pipe that is welded on insulating barrier constitutes.