CN211529693U

CN211529693U - Low-smoke zero-halogen coaxial cable with good shielding property

Info

Publication number: CN211529693U
Application number: CN202020189655.9U
Authority: CN
Inventors: 芮黎春
Original assignee: Wuxi City Pu Cao Technology Co ltd
Current assignee: Wuxi City Pu Cao Technology Co ltd
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2020-09-18
Anticipated expiration: 2030-02-21

Abstract

The utility model discloses a low smoke and zero halogen coaxial cable that shielding property is good relates to coaxial cable technical field, for solving current coaxial cable and often adopting single shielding layer structure, nevertheless because of coaxial cable mainly used mobile communication, if the shielding effect is not good, then can cause the problem of certain influence to the communication. The cable conductor is characterized in that an outer conductor is arranged inside the cable conductor, an inner conductor is arranged inside the outer conductor, a shielding layer is arranged between the outer conductor and the inner conductor, an insulator is arranged on the outer wall of the cable conductor, a waterproof aluminum foil is arranged on the outer wall of the insulator, a first copper strip woven layer is arranged on the outer wall of the waterproof aluminum foil, a second copper strip woven layer is arranged on the outer wall of the first copper strip woven layer, and a low-smoke halogen-free flame-retardant sheath is arranged on the outer wall of the second copper strip woven layer.

Description

Low-smoke zero-halogen coaxial cable with good shielding property

Technical Field

The utility model relates to a coaxial cable technical field specifically is a low smoke and zero halogen coaxial cable that shielding property is good.

Background

Coaxial cable refers to a cable having two concentric conductors, the conductors and shield sharing the same axis. Most common coaxial cables consist of a copper conductor separated by an insulating material, outside of which is another layer of annular conductor and its insulation, and then the entire cable is surrounded by a sheath of polyvinyl chloride or teflon material. Coaxial cables are used by television companies between television subscribers and community antennas, by telephone companies, and in enterprise intranets and ethernet networks. Many cables or pairs of cables may be placed in the same insulation sheath, plus amplifiers, which may transmit signals to a remote location. The development of coaxial cables is mainly divided into four generations: the first generation began in the middle of the 19 th century using polyethylene material as a solid core insulating medium; the second generation uses chemical foaming PE material as insulating medium; the third generation is that the lotus root core longitudinal hole PE material is used as an insulating medium; the fourth generation utilizes a physically foamed PE material as the insulating medium.

However, the conventional coaxial cable usually adopts a single shielding layer structure, but because the coaxial cable is mainly used for mobile communication, if the shielding effect is not good, certain influence is caused on communication; therefore, the existing requirements are not met, and a low-smoke halogen-free coaxial cable with good shielding property is provided for the requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low smoke and zero halogen coaxial cable that shielding property is good to solve the current coaxial cable that proposes in the above-mentioned background art and often adopt single shielding layer structure, nevertheless because of coaxial cable mainly used mobile communication, if the shielding effect is not good, then can cause the problem of certain influence to the communication.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a low smoke and zero halogen coaxial cable that shielding property is good, includes cable conductor, cable conductor's inside is provided with the outer conductor, the inside of outer conductor is provided with the inner conductor, be provided with the shielding layer between outer conductor and the inner conductor, be provided with the insulator on cable conductor's the outer wall, be provided with waterproof aluminium foil on the outer wall of insulator, be provided with first copper strips weaving layer on waterproof aluminium foil's the outer wall, be provided with second copper strips weaving layer on the outer wall of first copper strips weaving layer, be provided with low smoke and zero halogen flame retardant sheath on the outer wall of second copper strips weaving layer.

Preferably, the low-smoke halogen-free flame-retardant sheath is made of AFR/12.

Preferably, the shielding layer is made of an aluminum-plastic composite material.

Preferably, the inner conductor comprises a soft copper wire, the soft copper wire is provided with a plurality of soft copper wires, a plastic insulating tube is arranged on the outer wall of the inner conductor, and the outer conductor is woven by a plurality of thin soft copper wires.

Preferably, the outer wall of the low-smoke halogen-free flame-retardant sheath is provided with a plurality of waveform embossing which are uniformly distributed on the outer wall of the low-smoke halogen-free flame-retardant sheath.

Preferably, the waterproof aluminum foil is arranged between the insulator and the first copper tape woven layer.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up the shielding layer between outer conductor and inner conductor, the shielding layer is aluminium-moulds combined material and constitutes, can tentatively improve the interference killing feature of cable, and the insulator is provided with double-deck compound copper strips weaving layer outward, can further improve the shielding feature of cable, makes it be applicable to the mobile communication field more, and double-deck copper strips weaving layer toughness stronger, can replace original steel wire armor, reduces the influence of mechanical force to the cable.

2. The low-smoke halogen-free flame-retardant sheath is arranged on the outermost layer of the cable and is made of AFR/12, the AFR/12 is a polyolefin thermoplastic composite material containing a flame retardant, halogen acid cannot be released during combustion, the self-extinguishing characteristic is achieved, and dense smoke and toxic gas cannot be generated in special environments such as fire disasters.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a partial enlarged view of the point A of the present invention;

in the figure: 1. a cable conductor; 2. an outer conductor; 3. an insulator; 4. waterproof aluminum foil; 5. a first copper tape woven layer; 6. a second copper tape woven layer; 7. a low-smoke halogen-free flame-retardant sheath; 8. wave embossing; 9. an inner conductor; 10. a plastic insulating tube; 11. a shielding layer; 12. a annealed copper wire.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: a kind of good low smoke and zero halogen coaxial cable of shielding property, including cable conductor 1, there are outer conductors 2 in the inside of cable conductor 1, the inside of outer conductor 2 has inner conductors 9, there are shielding layers 11 between inner conductor 9 and the outer conductor 2, the shielding layer 11 has improved the anti-interference performance of the cable tentatively, there are insulators 3 on the outer wall of cable conductor 1, the insulator 3 has played the function of insulating the anticreep, there are waterproof aluminium foils 4 on the outer wall of the insulator 3, the waterproof aluminium foil 4 can avoid the insulator 3 to contact with water, influence the insulating effect, there are first copper strips braided layer 5 on the outer wall of the waterproof aluminium foil 4, there are second copper strips braided layer 6 on the outer wall of the first copper strips braided layer 5, the double-deck composite copper strips braided layer can further improve the shielding performance of the cable, make it suitable for the mobile communication field more, there are low smoke and zero halogen flame retardant sheaths 7 on the outer wall, the low-smoke halogen-free flame-retardant sheath 7 can not release halogen acid during combustion, and toxic gas is generated.

Further, the low-smoke halogen-free flame-retardant sheath 7 is made of AFR/12, the AFR/12 is a polyolefin thermoplastic composite material containing a flame retardant, does not release halogen acid, has the self-extinguishing characteristic, and does not generate dense smoke and toxic gas in special environments such as fire and the like.

Furthermore, the shielding layer 11 is made of aluminum-plastic composite material, and can play a role in anti-interference shielding.

Further, inner conductor 9 includes annealed copper wire 12, and annealed copper wire 12 is provided with a plurality of, is provided with plastic insulation pipe 10 on inner conductor 9's the outer wall, and outer conductor 2 is worked out by a plurality of thin annealed copper wires, and two inside and outside concentric conductor functions have constituted cable electricity core, and plastic insulation pipe 10 of inner conductor 9 outer wall has played the fixed effect that compresses tightly inside annealed copper wire 12.

Further, be provided with wave form impressed watermark 8 on the outer wall of low smoke and zero halogen flame retardant sheath 7, wave form impressed watermark 8 is provided with a plurality of, and evenly distributed is on low smoke and zero halogen flame retardant sheath 7's outer wall, and wave form impressed watermark 8 makes low smoke and zero halogen flame retardant sheath 7 have certain extension elasticity, has improved its tensile and wear resistance.

Further, waterproof aluminium foil 4 sets up between insulator 3 and first copper strips weaving layer 5, and waterproof aluminium foil 4 can play certain water-proof effects, avoids insulator 3 and water contact, influences insulating effect.

The working principle is as follows: when the cable is used, the cable conductor 1 is composed of two concentric conductors, namely an inner conductor 9 and an outer conductor 2, a shielding layer 11 is arranged between the outer conductor 2 and the inner conductor 9, the anti-interference performance of the cable can be preliminarily improved, a layer of waterproof aluminum foil 4 is attached to the outer wall of a cable insulator 3, a certain waterproof effect can be achieved, the insulator 3 is prevented from being contacted with water, the insulating effect of the insulator 3 is influenced, a double-layer composite copper strip weaving layer is arranged outside the insulator 3, the shielding performance of the cable can be further improved, the double-layer copper strip weaving layer can also replace the original steel wire armor, the influence of mechanical force on the cable is reduced, the outermost layer of the cable is a low-smoke halogen-free flame-retardant sheath 7 and is made of AFR/12, halogen acid can not be released during combustion, the cable has the self-extinguishing characteristic, and can.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a low smoke and zero halogen coaxial cable that shielding property is good, includes cable conductor (1), its characterized in that: the cable is characterized in that an outer conductor (2) is arranged inside the cable conductor (1), an inner conductor (9) is arranged inside the outer conductor (2), a shielding layer (11) is arranged between the outer conductor (2) and the inner conductor (9), an insulator (3) is arranged on the outer wall of the cable conductor (1), a waterproof aluminum foil (4) is arranged on the outer wall of the insulator (3), a first copper strip woven layer (5) is arranged on the outer wall of the waterproof aluminum foil (4), a second copper strip woven layer (6) is arranged on the outer wall of the first copper strip woven layer (5), and a low-smoke halogen-free flame-retardant sheath (7) is arranged on the outer wall of the second copper strip woven layer (6).

2. The good-shielding low-smoke zero-halogen coaxial cable according to claim 1, characterized in that: the low-smoke halogen-free flame-retardant sheath (7) is made of AFR/12.

3. The good-shielding low-smoke zero-halogen coaxial cable according to claim 1, characterized in that: the shielding layer (11) is made of an aluminum-plastic composite material.

4. The good-shielding low-smoke zero-halogen coaxial cable according to claim 1, characterized in that: the inner conductor (9) comprises a soft copper wire (12), the soft copper wire (12) is provided with a plurality of soft copper wires, a plastic insulating tube (10) is arranged on the outer wall of the inner conductor (9), and the outer conductor (2) is woven by a plurality of thin soft copper wires.

5. The good-shielding low-smoke zero-halogen coaxial cable according to claim 1, characterized in that: be provided with wave form impressed watermark (8) on the outer wall of low smoke and zero halogen fire-retardant sheath (7), wave form impressed watermark (8) are provided with a plurality of, and evenly distributed is on the outer wall of low smoke and zero halogen fire-retardant sheath (7).

6. The good-shielding low-smoke zero-halogen coaxial cable according to claim 1, characterized in that: the waterproof aluminum foil (4) is arranged between the insulator (3) and the first copper strip braided layer (5).