CN106205817A - Long-range network transmission of video cable - Google Patents

Long-range network transmission of video cable Download PDF

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Publication number
CN106205817A
CN106205817A CN201610668725.7A CN201610668725A CN106205817A CN 106205817 A CN106205817 A CN 106205817A CN 201610668725 A CN201610668725 A CN 201610668725A CN 106205817 A CN106205817 A CN 106205817A
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CN
China
Prior art keywords
clad
long
range network
network transmission
video cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610668725.7A
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Chinese (zh)
Other versions
CN106205817B (en
Inventor
吴士杰
陆春良
谭言秦
宋志斌
冯成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Hengtong Wire and Cable Technology Co Ltd
Original Assignee
Jiangsu Hengtong Wire and Cable Technology Co Ltd
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Publication date
Application filed by Jiangsu Hengtong Wire and Cable Technology Co Ltd filed Critical Jiangsu Hengtong Wire and Cable Technology Co Ltd
Priority to CN201610668725.7A priority Critical patent/CN106205817B/en
Publication of CN106205817A publication Critical patent/CN106205817A/en
Application granted granted Critical
Publication of CN106205817B publication Critical patent/CN106205817B/en
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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00Communication cables or conductors
    • H01B11/02Cables with twisted pairs or quads
    • H01B11/06Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H01B11/08Screens specially adapted for reducing cross-talk
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00Communication cables or conductors
    • H01B11/02Cables with twisted pairs or quads
    • H01B11/06Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29Protection against damage caused by extremes of temperature or by flame
    • H01B7/295Protection against damage caused by extremes of temperature or by flame using material resistant to flame

Abstract

Embodiments providing a kind of long-range network transmission of video cable, described long-range network transmission of video cable includes core, the 3rd clad and the 4th clad.Described core includes two groups of twisted wire pairs and often organizes peripheral first clad being coated with of described twisted wire pair, described twisted wire pair includes a pair single line the most stranded, the periphery of every described single line is coated with the second clad, and the diameter of section of every described single line is 0.3~0.8mm.Described 3rd clad is coated on the periphery of described core.Described 4th clad is coated on the periphery of described 3rd clad.The long-range network transmission of video cable that the embodiment of the present invention provides, cast aside the standard limitation of traditional data cable, the diameter of section of described single line has been increased, reduce its decay, ensure that the signal stabilization of transmission, and then meet the technology requirement of Network Video Transmission cable longer transmission distance.

Description

Long-range network transmission of video cable
Technical field
The present invention relates to communication technical field, in particular to a kind of long-range network transmission of video cable.
Background technology
At present, video cables transmission can be divided into coaxial base band transmission, twisted-pair feeder base band transmission, numeral (network) transmission etc. Several ways.Existing Internet video cable, it is common to use optical cable, when it is carried out long distance construction, process is loaded down with trivial details and holds Fragile, after construction, later maintenance cost is relatively big, and uses ordinary numbers network cable, owing to video signal transmission process is deposited In problems such as decay, impedance, return loss, cross-talks, prevailing transmission index is difficult to meet the technology requirement of longer transmission distance.
Summary of the invention
In view of this, the purpose of the embodiment of the present invention is, it is provided that a kind of long-range network transmission of video cable is to solve The problems referred to above.
The long-range network transmission of video cable that the embodiment of the present invention provides includes:
Core, described core includes two groups of twisted wire pairs and often organizes peripheral first cladding being coated with of described twisted wire pair Layer, described twisted wire pair includes a pair single line the most stranded, and the periphery of every described single line is coated with the second clad, and often The diameter of section of single line described in root is 0.3~0.8mm;
3rd clad, described 3rd clad is coated on the periphery of described core;
4th clad, described 4th clad is coated on the periphery of described 3rd clad.
Further, the diameter of the described single line of twisted wire pair described in same group is equal.
Further, often organize the single line of described twisted wire pair and use that different twisting pitch is stranded to be formed.
Further, it is filled with first medium layer between described first clad and described second clad.
Further, the inside of described first medium layer has bubble.
Further, it is filled with second dielectric layer between described first clad and described 3rd clad.
Further, described second dielectric layer uses the polyolefin resin of anti-flammability to be made.
Further, the diameter of section of described second clad is 0.9~1.3mm, and the thickness of described 3rd clad is not Less than 0.5mm, the thickness of described 4th clad is not less than 0.5mm.
Further, described long-range network transmission of video cable also includes being arranged at described second clad and described Tear rope between three clads, described tear rope extends to described length along one end of described long-range network transmission of video cable The other end of distance network video transmission line cable.
Further, described first clad is aluminium foil layer, and described second clad uses polyethylene insulation material to make Forming, described 3rd clad and the 4th clad use the polyolefin resin of anti-flammability to be made.
The long-range network transmission of video cable that the embodiment of the present invention provides, has cast aside legacy network transmission of video cable Standard is limited to, and is increased by the diameter of section of described single line, reduces its decay, it is ensured that the signal stabilization of transmission, and then meets The technology requirement of Network Video Transmission cable longer transmission distance.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by embodiment required use attached Figure is briefly described.Should be appreciated that the following drawings illustrate only certain embodiments of the present invention, it is right to be therefore not construed as The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to this A little accompanying drawings obtain other relevant accompanying drawings.
The profile of a kind of long-range network transmission of video cable that Fig. 1 provides for the embodiment of the present invention.
A kind of first twisted wire pair that Fig. 2 provides for the embodiment of the present invention and the structure chart of the second twisted wire pair.
Title corresponding to each reference is as follows:
100-core, 110-the first twisted wire pair, 111-the first single line, 120-the second twisted wire pair, 121-the second single line, 130-the first clad, 140-the second clad, 150-first medium layer;
200-the 3rd clad;
300-the 4th clad;
400-second dielectric layer;
500-tears rope.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Describe wholely.Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Generally Can with various different configurations arrange and design with the assembly of the embodiment of the present invention that illustrate described in accompanying drawing herein.Cause This, be not intended to limit claimed invention to the detailed description of the embodiments of the invention provided in the accompanying drawings below Scope, but it is merely representative of the selected embodiment of the present invention.Based on embodiments of the invention, those skilled in the art are not doing The every other embodiment obtained on the premise of going out creative work, broadly falls into the scope of protection of the invention.
It should also be noted that similar label and letter represent similar terms, therefore, the most a certain Xiang Yi in following accompanying drawing Individual accompanying drawing is defined, then need not it be defined further and explains in accompanying drawing subsequently.
Refer to Fig. 1, embodiments provide a kind of long-range network transmission of video cable, described long-range network Transmission of video cable includes core the 100, the 3rd clad 200 and the 4th clad 300.Described 3rd clad 200 is coated on The periphery of described core 100.Described 4th clad 300 is coated on the periphery of described 3rd clad 200.
In the present embodiment, described core 100 includes the first twisted wire pair 110 and the second twisted wire pair 120 and described First clad 130 of the peripheral cladding of one twisted wire pair 110 and the second twisted wire pair 120.Described first twisted wire pair 110 wraps Including a pair the first single line 111 the most stranded, the periphery of described first single line 111 is coated with the second clad 140, and described The diameter of section of one single line 111 is 0.3~0.8mm.Described second twisted wire pair 120 includes a pair the second single line the most stranded 121, the periphery of described second single line 121 is coated with the second clad 140, and the diameter of section of described second single line 121 is 0.3 ~0.8mm.
By above-mentioned setting, the first single line 111 described in the embodiment of the present invention is relative with the cross-sectional area of the second single line 121 Cross-sectional area in the single line of legacy network transmission of video cable has had to be increased largely so that the length described in the present embodiment The impedance of distance network video transmission line cable is less than in the impedance of legacy network transmission of video cable, thus reduces communications mistake Signal attenuation in journey.
The cross section of described first single line 111 and the second single line 121 is the circle of rule.In other words, described first single line 111 With the outer surface of the second single line 121, there is high smoothness, and described first single line 111 and described second single line 121 all have There is high concentricity, thus the situation avoiding impedance inconsistent formation signaling reflex of high degree occurs.
Alternatively, the manufacture material of described first single line 111 and the second single line 121 is the soft circular copper wire of solid annealing.Described After the soft circular copper wire of solid annealing is by copper bar, hard circular copper wire wire drawing, more annealed heat treatment and obtain, dc resistivity is less and prolongs Stretch rate preferable.
By above-mentioned setting, the long-range network transmission of video cable described in the embodiment of the present invention can be completely secured 720P With the normal signal transmission of the IP Camera of two kinds of pixels of 1080P, compared to optical cable cable and radio frequency transmission equipment, not only make Making manufacturing procedure relatively succinct, and be not easy to damage, later maintenance cost is relatively low.
Alternatively, in the present embodiment, the equal diameters of the first single line 111 described in a pair, the second single line 121 described in a pair Equal diameters.Alternatively, the diameter of described first single line 111 is more than the diameter of described second single line 121.In the present embodiment, institute State the difference of diameter of the first single line 111 and the second single line 121 less than or equal to 0.01mm.
Incorporated by reference to refering to Fig. 2, alternatively, the twisting pitch of described first twisted wire pair 110 and the second twisted wire pair 120 is not With.In the present embodiment, the twisting pitch of described first twisted wire pair 110 is more than the twisting pitch of described second twisted wire pair 120.
It should be noted that in the present embodiment, described first twisted wire pair 110 and the stranded joint of the second twisted wire pair 120 Away from difference, effectively prevent kindred effect and the coupled interference that produces, thus improve signal transmission quality.
In the present embodiment, owing to described first twisted wire pair 110 is different with the twisting pitch of the second twisted wire pair 120, and The twisting pitch of described first twisted wire pair 110 is more than the twisting pitch of described second twisted wire pair 120, so there being external force to draw When stretching described long-range network transmission of video cable, described first single line 111 of the first twisted wire pair 110 that twisting pitch is bigger Described first single line 111 of second twisted wire pair 120 less compared to twisting pitch is relatively easy to the deformation that is stretched.But, Owing to, in the present embodiment, the diameter of described first single line 111 being twisted into described first twisted wire pair 110 is described more than being twisted into The diameter of described second single line 121 of the second twisted wire pair 120.So, regarded by force-extension and described long-range network Frequently, when transmission cable deforms, the first single line 111 stretcher strain being originally relatively large in diameter, diameter diminishes until closer to described The diameter of the second single line 121.
By above-mentioned setting, the long-range network transmission of video cable described in the present embodiment, make described first stranded Line is different with the twisting pitch of the second twisted wire pair 120 to 110, effectively prevent kindred effect and the coupled interference that produces, While improve signal transmission quality, it also avoid that described first single line 111 is different with the diameter of the second single line 121 makes institute State that the first single line 111 is different with the characteristic impedance of the second single line 121 causes described first single line 111 and the number of the second single line 121 Problem according to transmission quality difference.
Alternatively, described first clad 130 is aluminium foil layer.In the present embodiment, the shielding of described aluminium foil layer can 100% covering Described data cable, the most described aluminium foil layer provides mechanical strength and good exhausted to described long-range network transmission of video cable Edge performance.Owing to their volume is little, aluminium foil layer shielding is generally used for the shielding of multipair twisted wire pair to reduce mutual crosstalk.Aluminum Layers of foil shielding is lightweight, volume is little, lower than mesh shields cost, the most more efficient in radio-frequency region, additionally, aluminium foil layer screen Cover more preferable compared with the pliability of mesh shields, but flex life is shorter.
Alternatively, described second clad 140 uses polyethylene insulation material to be made.Polyethylene insulation material has The characteristics such as impact resistance is high, wearability is high, corrosion resistance is good.In the present embodiment, the diameter of section of described second clad 140 It is 0.9~1.3mm.
It should be noted that in the present embodiment, the second clad 140 of the peripheral cladding of the first single line 111 described in a pair Color different, the color of i.e. every described first single line 111 is different.The of the peripheral cladding of the second single line 121 described in a pair The color of two clads 140 is different, and the color of i.e. every described second single line 121 is different, and the periphery of described first single line 111 Second clad 140 of cladding is also different from the color of the second clad 140 of the peripheral cladding of the second single line 121.
It is filled with first medium layer 150 between described first clad 130 and described second clad 140.Alternatively, institute State first medium layer 150 by polypropylene material foaming.Polypropylene material not only stable chemical performance, and mechanical property is exhausted Higher to value, its hot strength can reach 30Mpa.
Alternatively, the inside of described first medium layer 150 has bubble 151, makes described long-range network video transmission line Cable is the most soft, easy bending.When described long-range network transmission of video cable is extruded, it is provided that stress buffer, protect Protect and be coated on described first single line 111 of described second clad 140 and the second single line 121 is not destroyed.Additionally, described first The dielectric constant of dielectric layer 150 is relatively low, advantageously reduces impedance and the damage of signal of described long-range network transmission of video cable Consumption, improves the signal transmitting quality of described long-range network transmission of video cable.
In the present embodiment, described 3rd clad 200 and the 4th clad 300 use the polyolefin resin system of anti-flammability Form.It should be noted that alternatively, the TPO tree that described 3rd clad 200 and the 4th clad 300 are used Fat is different polyolefin resins, it is also possible to for identical polyolefin resin.In the present embodiment, in order to strengthen described length away from The fire line of off-network network transmission of video cable, described 3rd clad 200 and the 4th clad 300 use different TPO Resin is made.Alternatively, described 3rd clad 200 uses pvc material to be made, described 4th clad 300 use polythene material to be made.Additionally, the 3rd clad 200 and the face of the 4th clad 300 described in the present embodiment Color is different.Alternatively, described 3rd clad 200 is Lycoperdon polymorphum Vitt, and described 4th clad 300 is black.In the present embodiment, described The thickness of the 3rd clad 200 is not less than 0.5mm, and the thickness of described 4th clad 300 is not less than 0.5mm.
In the present embodiment, between described first clad 130 and described 3rd clad 200, it is filled with second dielectric layer 400.Alternatively, described second dielectric layer 400 uses the polyolefin resin of anti-flammability to be made, described to strengthen further The fire line of long-range network transmission of video cable.
Alternatively, described long-range network transmission of video cable also includes being arranged at described second clad 140 and described Tear rope 500 between 3rd clad 200, described tear rope 500 is along one end of described long-range network transmission of video cable Extend to the other end of described long-range network transmission of video cable.
In the present embodiment, described tear rope 500 three strands of Polyamide Yarns of employing are stranded to be formed, to increase intensity.Described tear rope Described 3rd clad 200 and the 4th clad 300 are peeled off by the on the one hand convenient construction person that arranges of 500 from described core 100, On the other hand can be also used for absorbing the heat that described long-range network transmission of video cable in use distributes, prevent institute State core 100 to bond with described 3rd clad 200.
After tested, under conditions of ambient temperature is 20 DEG C, record the long-range network video described in the embodiment of the present invention pass The electric property of defeated cable is:
Single conductor D.C. resistance maximum: 9.5 Ω/100m;
Line is uneven to D.C. resistance, maximum: 2.50%;
Dielectric strength between conductor, DC, 1min:1kV/1min;
Input impedance (1~100MHz): 110 ± 15 Ω;
Mutual capacitance maximum: 5.6nF/100m;
Insulated wire cores broken string, swinging cross: do not break, not swinging cross;
Transmission characteristic meets standard YD/T1019-2013 other than impedance.
In sum, the long-range network transmission of video cable that the embodiment of the present invention provides, cast aside legacy network video The standard limitation of transmission cable, increases the diameter of section of described single line, reduces its decay, it is ensured that the signal stabilization of transmission Property, and then meet the technology requirement of Network Video Transmission cable longer transmission distance.
Further, the long-range network transmission of video cable that the embodiment of the present invention provides, simple in construction, compared to equally For disclosure satisfy that optical cable cable and the radio frequency transmission equipment of long-distance transmissions, manufacturing cost is relatively low, and is hardly damaged, and reduces Maintenance cost.
In describing the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " arrange ", " connect " and should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected.Can be It is mechanically connected, it is also possible to be electrical connection.Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two The connection of element internal.For the ordinary skill in the art, can understand that above-mentioned term is in the present invention with concrete condition In concrete meaning.
In describing the invention, it should be noted that the orientation of the instruction such as term " interior ", " outward " or position relationship are base In orientation shown in the drawings or position relationship, or the orientation usually put when this invention product uses or position relationship, only It is for the ease of the description present invention and to simplify description rather than instruction or imply that the device of indication or element must have specifically Orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.Additionally, term " first ", " the Two " etc. it is only used for distinguishing describing, and it is not intended that instruction or hint relative importance.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (10)

1. a long-range network transmission of video cable, it is characterised in that described long-range network transmission of video cable includes:
Core, described core includes two groups of twisted wire pairs and often organizes peripheral first clad being coated with of described twisted wire pair, Described twisted wire pair includes a pair single line the most stranded, and the periphery of every described single line is coated with the second clad, and every The diameter of section of described single line is 0.3~0.8mm;
3rd clad, described 3rd clad is coated on the periphery of described core;
4th clad, described 4th clad is coated on the periphery of described 3rd clad.
Long-range network transmission of video cable the most according to claim 1, it is characterised in that twisted wire pair described in same group The diameter of described single line equal.
Long-range network transmission of video cable the most according to claim 2, it is characterised in that often organize described twisted wire pair Single line uses that different twisting pitch is stranded to be formed.
Long-range network transmission of video cable the most according to claim 1, it is characterised in that described first clad and institute State and between the second clad, be filled with first medium layer.
Long-range network transmission of video cable the most according to claim 4, it is characterised in that described first medium layer interior Portion has bubble.
Long-range network transmission of video cable the most according to claim 1, it is characterised in that described first clad and institute State and be filled with second dielectric layer between the 3rd clad.
Long-range network transmission of video cable the most according to claim 6, it is characterised in that described second dielectric layer uses The polyolefin resin of anti-flammability is made.
Long-range network transmission of video cable the most according to claim 1, it is characterised in that cutting of described second clad Face a diameter of 0.9~1.3mm, the thickness of described 3rd clad is not less than 0.5mm, and the thickness of described 4th clad is not less than 0.5mm。
Long-range network transmission of video cable the most according to claim 1, it is characterised in that described long-range network video Transmission cable also includes the tear rope being arranged between described second clad and described 3rd clad, and described tear rope is along institute The one end stating long-range network transmission of video cable extends to the other end of described long-range network transmission of video cable.
10. according to the long-range network transmission of video cable described in claim 1~9 any one, it is characterised in that described One clad is aluminium foil layer, and described second clad uses polyethylene insulation material to be made, described 3rd clad and the Four clads use the polyolefin resin of anti-flammability to be made.
CN201610668725.7A 2016-08-15 2016-08-15 Long-range network transmission of video cable Active CN106205817B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107945946A (en) * 2018-01-02 2018-04-20 无锡江南电缆有限公司 A kind of hybrid computer flat cable

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CN2919469Y (en) * 2006-07-03 2007-07-04 安徽宏源特种电缆集团有限公司 Light communication cable with thin wall
CN201117356Y (en) * 2007-11-20 2008-09-17 鲁能泰山曲阜电缆有限公司 Pair twisted cable
CN201122457Y (en) * 2007-11-01 2008-09-24 扬州恒辉电缆有限公司 High-temperature resistant cable for computer
CN103928105A (en) * 2014-05-05 2014-07-16 昆山联滔电子有限公司 Cable
CN103928189A (en) * 2014-05-04 2014-07-16 中天科技装备电缆有限公司 High-power railway communication signal control photo-electricity composite cable
CN104835591A (en) * 2015-03-18 2015-08-12 江苏亨通线缆科技有限公司 Anti-mouse telephone lead-in line

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Publication number Priority date Publication date Assignee Title
CN2919469Y (en) * 2006-07-03 2007-07-04 安徽宏源特种电缆集团有限公司 Light communication cable with thin wall
CN201122457Y (en) * 2007-11-01 2008-09-24 扬州恒辉电缆有限公司 High-temperature resistant cable for computer
CN201117356Y (en) * 2007-11-20 2008-09-17 鲁能泰山曲阜电缆有限公司 Pair twisted cable
CN103928189A (en) * 2014-05-04 2014-07-16 中天科技装备电缆有限公司 High-power railway communication signal control photo-electricity composite cable
CN103928105A (en) * 2014-05-05 2014-07-16 昆山联滔电子有限公司 Cable
CN104835591A (en) * 2015-03-18 2015-08-12 江苏亨通线缆科技有限公司 Anti-mouse telephone lead-in line

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Publication number Priority date Publication date Assignee Title
CN107945946A (en) * 2018-01-02 2018-04-20 无锡江南电缆有限公司 A kind of hybrid computer flat cable

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