CN209980848U

CN209980848U - Superspeed data transmission cable

Info

Publication number: CN209980848U
Application number: CN201921117212.2U
Authority: CN
Inventors: 后继好; 毕建金; 纪坡
Original assignee: ANHUI RUIZHIXING CABLE GROUP Co Ltd
Current assignee: Anhui ruizhixing Electronic Technology Group Co.,Ltd.
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-01-21
Anticipated expiration: 2029-07-17

Abstract

The utility model discloses an hypervelocity data transmission cable, include that the graphite alkene silver-copper alloy inner conductor, the conductor of by the concentric transposition extrude the skin-bubble-skin outward and gather perfluor ethylene propylene insulating, the cable core adopts the star hank group structure plus to fill, the conductor adopts silver-plated copper to wrap the flat wire of steel and silver-plated copper to wrap the nickel round wire outward and weave, the sheath adopts crosslinked ethylene tetrafluoroethylene material. The utility model discloses the cable has super slight, high speed, high strength, high anti-electromagnetic interference's high reliable high speed data transmission's advantage.

Description

Superspeed data transmission cable

Technical Field

The utility model relates to a hypervelocity data transmission cable's product design technical field especially relates to a hypervelocity data transmission cable and, is applied to the high-speed signal data transmission who has that the external diameter is little, light in weight, high anti-electromagnetic interference, high speed, high reliability are fit for space environment transmission's special environment field such as space flight, aviation.

Background

Along with the daily improvement of the informatization level of national defense industrial weaponry in China, equipment such as aviation, aerospace, weaponry, electronics and the like always needs a high-speed data transmission cable which can ensure light weight, small volume, high electromagnetic interference resistance and high reliability in severe space environments such as high and low temperature resistance, space ray resistance, particle radiation resistance, atomic oxygen resistance and the like. Therefore, electronic information engineers and cable designers are constantly searching for new technologies, new processes and new materials, developing new high-speed data transmission cables, and increasing the transmission rate of data signals of the entire system. Smaller, lighter cables can reduce cable usage and simplify wiring, while achieving electrical and mechanical design integrity for the most challenging applications.

The 5G communication technology which is dominated by China causes different effects in the global scope, along with the maturity and continuous popularization and application of the 5G communication technology, the rapid development of the national defense weaponry information technology of China is led, higher requirements on the data signal transmission rate and the reliability are provided, the war in the world is evolved into the electronic information war at present, the powerful information technology is the key for winning the war, the high-speed data transmission cable is used as a main medium for information transmission and plays an important role in an information system, the development and the development of a novel high-speed data transmission cable become a main technical bottleneck for limiting the development of the national defense information technology of China, and the urgent work of cable designers is provided for reducing the weight of the cable, improving the transmission rate, meeting the reliability of equipment for resisting electromagnetic interference, meeting special environmental requirements and the like.

Generally traditional national defense high-speed data transmission cable, inner conductor adopt stranded transposition silver-plated copper conductor, shielding to have adopted high weaving density silver-plated round copper wire to weave, insulating and adopted materials such as polytetrafluoroethylene, fluorinated ethylene propylene, for satisfying data signal's multiplexed transmission, adopt pair twist group or shielding pair twist group, following problem often can appear in the use of this type of product: when the section of the inner conductor is a silver-plated copper conductor is small, the direct current resistance of the conductor is increased, the transmission rate is influenced, and meanwhile, the strength of the conductor is not enough and the conductor is easy to break. In order to meet the technical requirement of characteristic impedance of the data cable, the outer diameter of the twisted pair group is greatly increased due to the fact that the outer diameter of the product insulation cannot be effectively reduced, the weight and the outer diameter of the product are finally affected, and the outer conductor is made of silver-plated round copper woven materials, so that the weight is large. The whole product can not meet the requirements of high-speed transmission, weight reduction, strength and high reliability.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is exactly in order to remedy prior art's defect, provides an ultra-high speed data transmission cable such as ultralight-duty, high strength, high speed transmission, high anti-electromagnetic interference, and the temperature can be under-100 ℃ to 200 ℃ of condition long-term work, guarantees to work under-150 ℃ of ultra-low temperature and 300 ℃ of high temperature environment short-term, has the high-speed transmission cable of high reliability.

The utility model discloses a realize through following technical scheme:

the utility model provides an ultra high speed data transmission cable, including graphite alkene silver-copper alloy inner conductor, three-layer coextrusion gathers perfluor ethylene propylene insulating layer outside graphite alkene silver-copper alloy inner conductor, adopt the mode strand of star hank to become the cable core with four graphite alkene silver-copper alloy inner conductors, still be equipped with micropore polytetrafluoroethylene rope in the middle of four graphite alkene silver-copper alloy inner conductors, vacuum micropore polytetrafluoroethylene area filling layer is added to the in-process of star hank, silver-plated copper package flat wire weaving layer has been woven in the outside of cable core, silver-plated copper package nickel wire weaving layer has been woven in the silver-plated copper package flat wire weaving layer outside, extrude irradiation crosslinking ethylene tetrafluoroethylene oversheath in the silver-plated copper package nickel wire weaving layer outside.

The graphene silver-copper alloy inner conductor is formed by twisting 19 strands of 0.127mm graphene silver-copper alloy wires.

The fluorinated ethylene propylene insulating layer adopts skin-foam-skin foaming fluorinated ethylene propylene, the thickness of the insulating layer is 0.2mm, and the thickness of the foaming layer is 0.15 mm.

The manufacturing process of the ultra-high speed data transmission cable comprises the following steps:

(1) mixing 72% of pure silver and 25% of pure copper, adding 2.5% of graphene and 0.5% of metal nickel, carrying out solid solution treatment at 780-820 ℃ to fully dissolve copper, graphene and nickel in liquid silver, aging for 90min at 290 ℃ to prepare a graphene silver-copper alloy material, drawing the prepared graphene silver-copper alloy into a cylinder, drawing the cylinder into a graphene silver-copper alloy wire by a drawing machine, and finally twisting the graphene silver-copper alloy wire by a wire and cable conductor twisting machine to obtain the graphene silver-copper alloy inner conductor;

(2) extruding inner skin layer-middle foaming layer-outer skin layer foaming polyfluorinated ethylene propylene outside the graphene silver-copper alloy inner conductor by adopting three-layer co-extrusion fluoroplastic foaming extrusion equipment;

(3) stranding the graphene silver-copper alloy inner conductor insulation wire core and the microporous polytetrafluoroethylene rope by a high-speed star stranding machine, and lapping and filling a vacuum microporous polytetrafluoroethylene filling layer by the same machine, wherein the stranding pitch of the high-speed star stranding machine is set to be 32-35 mm, and the pitch tolerance is controlled within 0.2 mm;

(4) weaving and processing the silver-plated copper-clad steel flat wire outside the vacuum micropore polytetrafluoroethylene filling layer by adopting a flat belt weaving machine;

(5) weaving the silver-plated copper-clad nickel round wire at the outer side of the silver-plated copper-clad steel flat wire by adopting a high-speed weaving machine;

(6) and finally, extruding the crosslinked ethylene tetrafluoroethylene outer sheath by using crosslinked XETFE extrusion equipment, and then irradiating the outer sheath by using an electron accelerator under the irradiation dose of 10 Mrad-12 Mrad.

And (2) compacting by adopting a compacting die after the graphene silver-copper alloy inner conductor is prepared in the step (1).

The vacuum microporous polytetrafluoroethylene is a film microporous polytetrafluoroethylene belt which is prepared by extruding polytetrafluoroethylene, calendaring and stretching the polytetrafluoroethylene in a vacuum environment.

The utility model discloses create the inner conductor and adopt a brand-new superhigh strength alloy material-graphite alkene silver-copper alloy conductor material, add double-deck graphite alkene in conductor material, the superconductive nature that make full use of double-deck graphite alkene has under the normal atmospheric temperature condition, like this the graphite alkene silver-copper alloy conductor direct current resistance of the same sectional area reduces by a wide margin, only 85% that is the silver-plated copper wire, 60% of ordinary silver-copper alloy material can make product digital signal transmission rate and transmission distance improve more than 2 times. Meanwhile, the graphene has high hardness, and the strength of the conductor can reach 600Mpa, which is equivalent to more than twice that of a silver-plated copper conductor. The material also fully utilizes the high temperature resistance and oxidation resistance of the silver metal, and can be used for a long time at the high temperature of more than 250 ℃.

The insulating material adopts high-foaming polyfluorinated ethylene propylene with the foaming rate of 60 percent, effectively reduces the dielectric constant of the insulating material, and the dielectric constant of the insulating medium is only 1.5 and is only 80 percent of that of the common high-speed transmission cable. A smaller attenuation constant of the insulating medium can be obtained.

In the design of cable structure, the utility model discloses the application network adopts two way four-wire systems, adopts the star hank group that more does benefit to product stable in structure and obtain less external diameter. After the insulation and twisting, the vacuum microporous polytetrafluoroethylene tape is wrapped, the structural design effectively reduces the transmission loss of signals in the cable, and simultaneously obtains a lower transmission medium dielectric constant, the insulation outer diameter and the cable twisting outer diameter are greatly reduced, and further the transmission rate of the product is improved.

The design of the shielding layer is woven by adopting a silver-plated copper-clad steel flat wire and a silver-plated copper-clad nickel round wire, and the silver-plated copper-clad steel flat wire can be processed to be thinner in thickness, smaller in weaving outer diameter and smaller in weaving weight. By adopting the double-layer shielding design, the product has extremely high electromagnetic interference resistance besides good transmission performance.

The sheath adopts a modified fluorine-containing polymer with radiation resistance, high temperature resistance and low density, so that the product has radiation resistance, atomic oxygen resistance and various space environment adaptability

The utility model discloses create for realizing above-mentioned purpose, the technical scheme who adopts is an hypervelocity data transmission cable, including inner conductor and insulating layer, pair twist group, outer conductor and sheath are constituteed.

The insulating layer adopts skin-foam-skin foaming polyfluorinated ethylene propylene, the insulating thickness is only 0.2mm, and the thickness of the foaming layer is only 0.15 mm.

The pair-twisting group adopts a star-twisting group, in order to ensure the structural symmetry of the cable, a microporous polytetrafluoroethylene rope is added in the middle, and vacuum microporous polytetrafluoroethylene is wrapped around the cable after star-twisting to be used as filling.

The conductor is woven by adopting a 0.03mm thick silver-plated copper-clad steel flat wire and a 0.05mm silver-plated copper-clad nickel round wire in the outer design, the density is greater than 95%, and the conductor has good electromagnetic interference resistance on the basis of meeting the requirement of a cable for signal transmission.

The utility model has the advantages that: 1. ultra-mild: the utility model discloses a brand-new conductor material and structural style transmit under the condition of the same signal, use cable material to descend by a wide margin, and this maximum cable external diameter is only 3.8mm, and the maximum weight of product is 23.5g/m, only is the advanced like product 55% abroad.

2. High rate: the utility model discloses the inner conductor adopts brand-new material-graphite alkene silver-copper alloy, is the lowest material of resistivity that uses under the current conventional condition, and insulating material, filler material all have extremely low dielectric constant, new structural design when reducing product external diameter and weight, have still reduced the transmission loss of product simultaneously, have improved transmission rate, and the highest transmission rate can reach 10Gbit/s, and the transmission speed ratio can reach more than 86%.

3. High strength: the utility model discloses the brand-new ultrahigh strength alloy material of inner conductor-graphite alkene silver-copper alloy conductor material, its intensity is equivalent to more than the twice of copper conductor, and outer conductor intensity design is also superior to the silver-plated copper conductor by a wide margin simultaneously.

4. High anti-electromagnetic interference: the utility model discloses the outer conductor still possesses good anti-electromagnetic interference except possessing the signal transmission function, adopt double-deck woven shield design, weave the percentage of coverage and reach more than 95%, adopt four kinds of different metal material combinations such as steel, nickel, copper, silver simultaneously, make full use of different metal material's anti-electromagnetic interference and anti-electromagnetic interference, under the condition that reduces the shielding layer thickness, have more excellent anti-electromagnetic interference, through the test, under 1GHz, shielding efficiency can reach more than 120dB, be higher than traditional double-deck shielded cable 90 dB's index requirement far away.

5. High environmental adaptability: the material selected by the utility model passes the relevant performance test of aerospace level, and meets the requirements of high and low temperature resistance (the long-term working temperature can be between-100 ℃ to 200 ℃), radiation resistance, atomic oxygen resistance, vacuum outgassing and other conditions under the space environment.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in fig. 1, an ultra-high speed data transmission cable comprises a graphene silver copper alloy inner conductor 1, a perfluorinated ethylene propylene insulating layer 2 is co-extruded at three layers outside the graphene silver copper alloy inner conductor 1, four graphene silver copper alloy inner conductors 1 are twisted into a cable core in a star twisting mode, a microporous polytetrafluoroethylene rope 7 is further arranged in the middle of each of the four graphene silver copper alloy inner conductors 1, a vacuum microporous polytetrafluoroethylene tape filling layer 3 is added in the star twisting process, a silver-plated copper-coated flat steel wire braid 4 is woven at the outer side of the cable core, a silver-plated copper-coated nickel wire braid 5 is woven at the outer side of the silver-plated copper-coated flat steel wire braid 4, and an irradiation cross-linked ethylene tetrafluoroethylene outer sheath 6 is extruded at the outer side of the silver-plated copper-coated nickel wire braid 5.

The graphene silver-copper alloy inner conductor 1 is formed by twisting 19 strands of 0.127mm graphene silver-copper alloy wires.

The fluorinated ethylene propylene insulating layer 2 adopts skin-foam-skin foaming fluorinated ethylene propylene, the thickness of the insulating layer is 0.2mm, and the thickness of the foaming layer is 0.15 mm.

Claims

1. An ultra high speed data transmission cable characterized by: including graphite alkene silver-copper alloy inner conductor, three-layer coextrusion poly perfluoro ethylene propylene insulating layer outside graphite alkene silver-copper alloy inner conductor, adopt four graphite alkene silver-copper alloy inner conductor insulation sinle silk to strand into the cable core of star hank's mode, still be equipped with micropore polytetrafluoroethylene rope in the middle of four graphite alkene silver-copper alloy inner conductor insulation sinle silks, vacuum micropore polytetrafluoroethylene area filling layer is added to the in-process of star hank, silver-plated copper package steel flat wire weaving layer has been woven in the outside of cable core, silver-plated copper package nickel round wire weaving layer has been woven in the silver-plated copper package steel flat wire weaving layer outside, extrude irradiation cross-linked ethylene tetrafluoroethylene oversheath in the silver-plated copper package nickel round wire weaving layer outside.

2. An ultra high speed data transmission cable according to claim 1, wherein: the graphene silver-copper alloy inner conductor is formed by twisting 19 strands of 0.127mm graphene silver-copper alloy wires.

3. An ultra high speed data transmission cable according to claim 1, wherein: the fluorinated ethylene propylene insulating layer adopts skin-foam-skin foaming fluorinated ethylene propylene, the thickness of the insulating layer is 0.2mm, and the thickness of the foaming layer is 0.15 mm.