CN202601310U

CN202601310U - High-frequency communication cable

Info

Publication number: CN202601310U
Application number: CN 201220172203
Authority: CN
Inventors: 汤传盛; 刘玉明; 常峻; 黄军
Original assignee: Anhui Wuzhou Special Cable Group Co Ltd
Current assignee: Anhui Wuzhou Special Cable Group Co Ltd
Priority date: 2012-04-21
Filing date: 2012-04-21
Publication date: 2012-12-12
Anticipated expiration: 2022-04-21

Abstract

The utility model discloses a high-frequency communication cable. The high-frequency communication cable comprises a plurality of conductors which are made of copper clad steel materials, each conductor is provided with an insulation layer made of irradiation crosslinking polyethylene in an extruded mode, an insulation protective layer which is made of polyester tapes is arranged between each insulation layer and each conductor, the insulation layers outside each two conductors are stranded to form a pairing stranded group, a unit shielding isolation layer which is formed by weaving of polyester tapes and copper wires in a shielding mode is wrapped on each pairing stranded group in a winding mode, and so that unit pairing stranded groups are formed. The unit pairing stranded groups are arranged in sequence into cables to form a cable core, a shielding layer is arranged outside the cable core in an extruded mode, high-impedance packing wires are arranged between the shielding layer and the cable core to form a packing layer , an inner protective layer is arranged outside the shielding layer, irradiation crosslinking polyethylene rubber is arranged outside the inner protective layer in an extruded mode to form an outer sheath layer, and an armoring layer which is weaved by galvanized steel tapes or aluminum alloy tapes wraps outside the outer sheath layer. The high-frequency communication cable meets the requirements that when a symmetrical cable is installed and laid, near-end crosstalk attenuation is small and structure return loss is small, and has the advantages of being capable of adapting to temperature variation in a big scale, and resistant to environmental stress and mechanical load.

Description

A kind of high frequency communication cable

Technical field

The utility model relates to the electric wire field, relates in particular to a kind of high frequency communication cable.

Background technology

Development along with computer network and data communication.People are also increasingly high to the requirement to cable, from bandwidth several years ago be five types of cables of 100MHZ to the data cable of today up to 1000MHZ, leap that generation is big beyond doubt; As everyone knows, the electromagnetic field of coaxial cable seals, rule; Reaching above-mentioned requirements is to be relatively easy to, yet the electromagnetic field of the cable of symmetrical cable is open; Both irregular also inhomogeneous, it is bigger to make the high frequency symmetrical cable difficulty, even make successfully; But after wiring, it is many that detection finds that some index of cable has worsened, and especially near-end crosstalk attenuation and SRL are difficult to reach requirement.

The utility model can realize that symmetrical cable is little in installation laid processes near-end crosstalk attenuation, the requirement that SRL is little on the basis of prior art at structure and material; Cable insulation, sheath adopt the cross-linking radiation fluorubber simultaneously; Can realize that product is soft, bending radius is little, bear pressure, thermal characteristic, mechanical property and chemical characteristic are impacted in bending, tension force, stretched across load and powerful, best weather resistance, UV resistant and ozone aggressivity; And can bear the wider anti-mechanical load of variations in temperature environmental stress resistance, effectively solved above-mentioned technical problem.

The utility model content

The purpose of the utility model is in order to remedy the deficiency of prior art; A kind of high frequency communication cable is provided; Be applicable to high frequency 1000MHZ and following analog communication system or 500Mbit/s and following digital communication system; It is little to have near-end crosstalk attenuation; SRL is little, bear pressure, thermal characteristic, mechanical property and chemical characteristic are impacted in bending, tension force, stretched across load and powerful, best weather resistance, UV resistant and ozone aggressivity, and can bear comprehensive characteristics such as the wider anti-mechanical load of variations in temperature environmental stress resistance.

The utility model is realized through following technical scheme:

A kind of high frequency communication cable includes the conductor of several employing copper covered steel materials, is extruded with the insulating barrier that IXPE forms on the said conductor respectively; Also be provided with the insulating protective layer that one deck polyester belt constitutes between said insulating barrier and the conductor; And the outer insulating barrier of per two conductors is twisted into the pair twist group, on the pair twist group, is surrounded with polyester belt and copper wire braid shielded and forms unit shielding separator, and form unit pair twist group with this; Unit pair twist group is arranged stranding in order constitute cable core; Outside cable core, be extruded with screen, be provided with the high impedance gasket for packing between said screen and the cable core and form packed layer, said screen is provided with sheath outward; Said sheath is extruded with the cross-linking radiation fluorubber outward and forms external sheath layer, and said external sheath layer is wrapped with the armour that adopts galvanized steel strip or aluminum alloy strip establishment.

Described several conductor is the stranded formation of multiply copper covered steel, and the stranded lay ratio of several conductors is 13-21, and the single wire fracture percentage elongation is not less than 18%.

Described screen adopts aluminium-plastic tape overlapping wrapped.

Described sheath is extruded by the high-temperature glass fibre rope and forms.

The utility model has the advantages that:

1. conductor adopts the copper covered steel lay configuration in the utility model, has improved the tensile strength of cable greatly;

2. conductor external irradiation crosslinked polyethylene forms insulating barrier in the utility model, can effectively reduce decay, reduces cable dimension;

3. the utility model adopts different pitch pair twist group core structures, can improve the cross-talk effect of product greatly;

4. the utility model adopts unit shielding insulation layer structure, can improve the interference free performance of product greatly;

5. the utility model adopts sheath outside screen, has reduced product structure return loss;

6. insulation and sheath have adopted cross-linking radiation fluorubber material, and this material has weather resistance, UV resistant and the ozone aggressivity of bearing pressure, bending, tension force, stretched across load and powerful impact thermal characteristic, mechanical property and chemical characteristic, the best.And have fire-retardant,, environmental protection function, and can satisfy the characteristics of using in the humid area;

7. the cable maximum operating temperature can reach 220 ℃ in the utility model.

Description of drawings

Fig. 1 is the utility model structural representation.

Embodiment

Referring to accompanying drawing, a kind of high frequency communication cable includes the conductor 1 of several employing copper covered steel materials; Be extruded with the insulating barrier 2 that IXPE forms on the conductor 1 respectively, also be provided with the insulating protective layer 3 that one deck polyester belt constitutes between insulating barrier 2 and the conductor 1, and per two conductors 1 outer insulating barrier 2 is twisted into the pair twist group; On the pair twist group, be surrounded with polyester belt and copper wire braid shielded and form unit shielding separator 4; And form unit pair twist group with this, and unit pair twist group is arranged stranding in order constitute cable core, outside cable core, be extruded with screen 5; Be provided with the high impedance gasket for packing between screen 5 and the cable core and form packed layer 6; The screen 5 outer sheaths 7 that are provided with, the sheath 7 outer cross-linking radiation fluorubber that are extruded with form external sheath layer 8, and external sheath layer 8 is wrapped with the armour 9 that adopts galvanized steel strip or aluminum alloy strip establishment; Described several conductor 1 is the stranded formation of multiply copper covered steel, and the stranded lay ratio of several conductors is 13-21, and the single wire fracture percentage elongation is not less than 18%; Described screen 5 adopts aluminium-plastic tape overlapping wrapped; Described sheath 7 is extruded by the high-temperature glass fibre rope and forms.

Claims

1. high frequency communication cable includes the conductor of several employing copper covered steel materials, is extruded with the insulating barrier that IXPE forms on the said conductor respectively; Also be provided with the insulating protective layer that one deck polyester belt constitutes between said insulating barrier and the conductor; And the outer insulating barrier of per two conductors is twisted into the pair twist group, on the pair twist group, is surrounded with polyester belt and copper wire braid shielded and forms unit shielding separator, and form unit pair twist group with this; Unit pair twist group is arranged stranding in order constitute cable core; Outside cable core, be extruded with screen, be provided with the high impedance gasket for packing between said screen and the cable core and form packed layer, said screen is provided with sheath outward; Said sheath is extruded with the cross-linking radiation fluorubber outward and forms external sheath layer, and said external sheath layer is wrapped with the armour that adopts galvanized steel strip or aluminum alloy strip establishment.

2. high frequency communication cable according to claim 1 is characterized in that: described several conductors are the stranded formation of multiply copper covered steel, and the stranded lay ratio of several conductors is 13-21, and the single wire fracture percentage elongation is not less than 18%.

3. high frequency communication cable according to claim 1 is characterized in that: described screen adopts aluminium-plastic tape overlapping wrapped.

4. high frequency communication cable according to claim 1 is characterized in that: described sheath is extruded by the high-temperature glass fibre rope and forms.