CN203552758U

CN203552758U - Moisture-proof braiding type armoured coaxial cable

Info

Publication number: CN203552758U
Application number: CN201320720933.9U
Authority: CN
Inventors: 陈伟乐; 肖翠玉; 陈占山
Original assignee: ZHUHAI YUXUN COAXIAL CABLE CO Ltd
Current assignee: ZHUHAI YUXUN COAXIAL CABLE CO Ltd
Priority date: 2013-11-15
Filing date: 2013-11-15
Publication date: 2014-04-16
Anticipated expiration: 2023-11-15

Abstract

The utility model discloses and provides a moisture-proof braiding type armoured coaxial cable having advantages of high physical-mechanical damage-resistant capability, good moisture-proof property, and excellent high-frequency transmission performance. The provided moisture-proof braiding type armoured coaxial cable comprises an inner conductor (1), an insulation layer (2), an outer conductor (3), and an inner sheath (4), wherein the components are arranged in a concentric mode from inside to outside; and the periphery of the inner sheath (4) is longitudinally wrapped with a steel tape armoured layer (5) and an outer sheath (6) successively from inside to outside; and the portion between the steel tape armoured layer (5) and the outer sheath (6) is coated with a waterproof coating unit. The provided moisture-proof braiding type armoured coaxial cable can be applied to the field of the equipment connection wire technology.

Description

Moistureproof Weaving type armored coaxial cable

Technical field

The utility model relates to a kind of coaxial cable, relates in particular to a kind of moistureproof Weaving type armored coaxial cable.

Background technology

The top (being transmitting terminal) of wire transmission network to connecting lines such as the main line of the network terminal (being receiving terminal), service main, branch lines laying in route of determining, can there is large, the moist easily ponding of air humidity, be vulnerable to the laid condition rugged environment of external mechanical force, thereby make the common woven structure coax network of existing use connecting line make moist, intake or be subject to external mechanical force distortion, cause connecting line electric property, high-frequency transmission hydraulic performance decline, failure rate is high, connecting line maintain and replace is frequent.

The basic structure of the common Weaving type coaxial cable of application is concentric layer setting from inside to outside at present: inner wire a, insulator b, Weaving type outer conductor and plastic sheath c, wherein Weaving type outer conductor comprises aluminum-plastic composite membrane band d and wire sheathing e.The basic structure schematic diagram of common Weaving type coaxial cable as shown in Figure 1.Common Weaving type coaxial cable is in order to reduce attenuation constant value, its insulator adopts physical blowing combined insulation layer, and reach under the prerequisite of standard-required in the characteristic impedance that guarantees product, improve as much as possible the foam degrees of physical blowing combined insulation layer, make it reach maximum, but this can cause insulator to resist external mechanical damage ability.Common Weaving type coaxial cable adopts aluminum-plastic composite membrane band and the combined outer conductor screen of wire braid, and it is outer is plastic sheath, and the ability of protection physical blowing combined insulation layer being avoided to physical mechanical damage is very not enough.

Outside the physical blowing combined insulation layer of common Weaving type coaxial cable, between each concentric layer structure of setting, all have gap, structure space, moisture, moisture very easily enter cable are made moist, electric property, high-frequency transmission performance depreciation, and hardware is impaired.And insulator is subject to mechanical damage, in cable, enter moisture and all can directly have influence on electric property and the high-frequency transmission performance of cable, even have influence on the service life of cable.Therefore, current common Weaving type coaxial cable exists following deficiency in application:

1. insulator is physical blowing polyethylene combined insulation layer, yielding, and cable plastics oversheath protection cable core is avoided the ability of external mechanical force distortion;

2. common Weaving type coaxial cable is poor because of its structural stability, humidity resistance, has influence on the electric property of product and the stability of high-frequency transmission performance;

3. the poor reliability of common Weaving type coaxial cable;

Common Weaving type coaxial cable because of its structural stability and humidity resistance poor, the scope of laying is restricted;

5. common Weaving type coaxial cable shield performance is low; Defend external Electromagnetic Interference ability, affect the transmission quality of cable;

6. common Weaving type coaxial cable fault rate is high, and useful life is low.

Utility model content

Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, provides that a kind of anti-physical mechanical damage ability is strong, humidity resistance good and the moistureproof Weaving type armored coaxial cable of high-frequency transmission function admirable.

The technical scheme that the utility model adopts is: the utility model comprises the inner wire, insulating barrier, outer conductor and the inner sheath that arrange with one heart from inside to outside, in described inner sheath periphery, indulge and be surrounded by steel-tape armouring layer and oversheath successively from inside to outside, between described steel-tape armouring layer and described oversheath, be coated with water-repellent paint.

On described outer conductor outer surface, be coated with water-repellent paint.

Described outer conductor comprises aluminum-plastic composite membrane band and wire sheathing, and described aluminum-plastic composite membrane band is vertical to be wrapped in outside described insulating barrier, and described wire sheathing is vertical to be wrapped in outside described aluminum-plastic composite membrane band, and the plastic cover of described aluminum-plastic composite membrane band inwardly and be close to described insulating barrier.

Between described aluminum-plastic composite membrane band and described wire sheathing and in the bedding void of described wire sheathing, be coated with waterproof material.

Described water-repellent paint is waterproof petroleum jelly.

Described insulating barrier comprises from inside to outside solid polyethylene insulation internal layer and the physical blowing combined insulation layer of vertical bag successively, or indulges successively from inside to outside solid polyethylene insulation internal layer, physical blowing combined insulation layer and the solid polyethylene insulation skin of bag.

Described inner wire is single copper cash, or copper or coating copper or copper covered steel or copper cover aluminum twisted wire.

Described aluminum-plastic composite membrane band is single side self or non-binding type plastic-aluminum composite membrane band.

Described wire sheathing is fine copper or aluminium alloy or tinned copper braid.

The beneficial effects of the utility model are: because the utility model comprises the inner wire, insulating barrier, outer conductor and the inner sheath that arrange with one heart from inside to outside, in described inner sheath periphery, indulge and be surrounded by steel-tape armouring layer and oversheath successively from inside to outside, between described steel-tape armouring layer and described oversheath, be coated with water-repellent paint; On described outer conductor outer surface, be coated with water-repellent paint; Described water-repellent paint is waterproof petroleum jelly; So, the utility model is by the periphery at inner sheath successively vertical Baogang band armour and oversheath, greatly improve the anti-physical mechanical damage ability of cable, and on described steel-tape armouring layer and all apply waterproof petroleum jelly on described outer conductor, greatly improved the moistureproof ability of cable.The utility model cable tool has the following advantages: 1, to resist external mechanical damage ability strong for cable; 2, the anti-external electromagnetic wave interference of product excellent performance, armour adopts coating or coated steel strips, and steel band is good magnetic material, and electromagnetic wave is had to shielding action well; 3, inner wire extrudes in solid polyethylene thin layer outward and adds polyethylene foamed insulating barrier and add the combined insulation body that the outer thin layer of solid polyethylene is combined as a whole, in solid polyethylene, thin layer coheres mutually with inner wire surface again, stop moisture to enter, the moistureproof ability of cable is good; 4, outside braided outer conductor screen, increased again good magnetic material armour, not only improved the shielding attenuation performance of product, make the audio-video signal of transmission not be subject to the interference of external electromagnetic ripple; Also the high-frequency signal that prevents Transmission leaks to outside, has reduced the attenuation constant value of product, makes product have good attenuation constant performance, has guaranteed the high-frequency transmission performance of product excellence; 5, the utility model has guaranteed electric property, the high-frequency transmission stable performance, reliable of product, has reached the clear picture of transmission, the design effect of audio frequency fidelity; 6, the utility model material selection is appropriate, rational in infrastructure, and high moisture energy, good shielding properties, the good ability of resisting external mechanical damage, guaranteed that hazard rate is low, long service life.

Accompanying drawing explanation

Fig. 1 is the easy structure schematic diagram of plain edition Weaving type coaxial cable;

Fig. 2 is the easy structure schematic diagram of the utility model coaxial cable;

Fig. 3 is the cross-sectional structure schematic diagram of described insulating barrier.

Embodiment

As shown in Figure 2, the utility model comprises the inner wire 1, insulating barrier 2, outer conductor 3 and the inner sheath 4 that arrange with one heart from inside to outside.Described inner wire 1 is single copper cash, or copper or coating copper or copper covered steel or copper cover aluminum twisted wire.On described outer conductor 3 outer surfaces, be coated with water-repellent paint.Described outer conductor 3 comprises aluminum-plastic composite membrane band 31 and wire sheathing 32, vertical the wrapping in outside described insulating barrier 2 of described aluminum-plastic composite membrane band 31, described wire sheathing 32 is vertical to be wrapped in outside described aluminum-plastic composite membrane band 31, and the plastic cover of described aluminum-plastic composite membrane band 31 inwardly and be close to described insulating barrier 2.Described aluminum-plastic composite membrane band 31 is single side self or non-binding type plastic-aluminum composite membrane band.Between described aluminum-plastic composite membrane band 31 and described wire sheathing 32 and in the bedding void of described wire sheathing 32, be coated with waterproof material.In described inner sheath 4 peripheries, indulge and be surrounded by steel-tape armouring layer 5 and oversheath 6 successively from inside to outside, between described steel-tape armouring layer 5 and described oversheath 6, be coated with water-repellent paint.Described water-repellent paint is waterproof petroleum jelly.Described insulating barrier 2 comprises from inside to outside solid polyethylene insulation internal layer 21 and the physical blowing combined insulation layer 22 of vertical bag successively, or indulges successively from inside to outside solid polyethylene insulation internal layer 21, physical blowing combined insulation layer 22 and the solid polyethylene insulation skin 23 of bag.In the present embodiment, preferential solid polyethylene insulation internal layer 21, physical blowing combined insulation layer 22 and the solid polyethylene insulation skin 23 of vertical bag successively selected from inside to outside, as shown in Figure 3.Described wire sheathing 32 is fine copper or aluminium alloy or tinned copper braid.

The utility model may be used on the wire transmission network systems such as cable TV transmission network network system, closed-circuit system, supervisory control system, safety and protection system, large, the moist easily ponding of the air humidity that is laid in, be vulnerable in the environment of inclement condition of external mechanical force, as main line, service main, branch line TV transmission image, sound, data, information, symbol; Also can be for having in the wire transmission network laid condition rugged environment of other impedance matchings of similar applications; Can also the used main line of alternate network, service main, the common Weaving type coaxial cable product of branch line, not only can high-performance, high stability, high reliability ground transmission of video, audio frequency, figure, information symbol; Because of its humidity resistance, shielding properties excellence, be more suitable for Digital Transmission, and its failure rate is low, long service life.

In sum, the utility model can be applicable to interfacility link technical field.

Claims

1. a moistureproof Weaving type armored coaxial cable, comprise the inner wire (1), insulating barrier (2), outer conductor (3) and the inner sheath (4) that arrange with one heart from inside to outside, it is characterized in that: in described inner sheath (4) periphery, indulge and be surrounded by steel-tape armouring layer (5) and oversheath (6) successively from inside to outside, between described steel-tape armouring layer (5) and described oversheath (6), be coated with water-repellent paint.

2. moistureproof Weaving type armored coaxial cable according to claim 1, is characterized in that: on described outer conductor (3) outer surface, be coated with water-repellent paint.

3. moistureproof Weaving type armored coaxial cable according to claim 2, it is characterized in that: described outer conductor (3) comprises aluminum-plastic composite membrane band (31) and wire sheathing (32), described aluminum-plastic composite membrane band (31) is vertical to be wrapped in outside described insulating barrier (2), described wire sheathing (32) is vertical to be wrapped in outside described aluminum-plastic composite membrane band (31), and the plastic cover of described aluminum-plastic composite membrane band (31) inwardly and be close to described insulating barrier (2).

4. moistureproof Weaving type armored coaxial cable according to claim 3, is characterized in that: between described aluminum-plastic composite membrane band (31) and described wire sheathing (32) and in the bedding void of described wire sheathing (32), be coated with waterproof material.

5. moistureproof Weaving type armored coaxial cable according to claim 4, is characterized in that: described water-repellent paint is waterproof petroleum jelly.

6. moistureproof Weaving type armored coaxial cable according to claim 1, it is characterized in that: described insulating barrier (2) comprises from inside to outside solid polyethylene insulation internal layer (21) and the physical blowing combined insulation layer (22) of vertical bag successively, or indulge successively from inside to outside solid polyethylene insulation internal layer (21), physical blowing combined insulation layer (22) and the solid polyethylene insulation skin (23) of bag.

7. moistureproof Weaving type armored coaxial cable according to claim 1, is characterized in that: described inner wire (1) is single copper cash, or copper or coating copper or copper covered steel or copper cover aluminum twisted wire.

8. moistureproof Weaving type armored coaxial cable according to claim 3, is characterized in that: described aluminum-plastic composite membrane band (31) is single side self or non-binding type plastic-aluminum composite membrane band.

9. moistureproof Weaving type armored coaxial cable according to claim 3, is characterized in that: described wire sheathing (32) is fine copper or aluminium alloy or tinned copper braid.