CN103165244B - There is the telecommunication cable of waterproof, anti-interference function - Google Patents
There is the telecommunication cable of waterproof, anti-interference function Download PDFInfo
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- CN103165244B CN103165244B CN201310088361.1A CN201310088361A CN103165244B CN 103165244 B CN103165244 B CN 103165244B CN 201310088361 A CN201310088361 A CN 201310088361A CN 103165244 B CN103165244 B CN 103165244B
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Abstract
The present invention discloses a kind of mixed type telecommunication cable with waterproof, anti-interference function, comprises steel conductor, copper spindle guide body, eight copper conductors and oversheath body; Eight copper conductor stranded formation four between two to the twisted wire pair as information communication, polyester belt and the second inner restrictive coating and four twisted pair wires between gap in be filled with the packed layer that blocks water; Oversheath body comprises the first sub-sheath, the second sub-sheath and the 3rd sub-sheath, this first sub-sheath, the second sub-sheath and the 3rd sub-sheath center have one " people " font connecting portion, first sub-sheath is coated on described steel conductor outside surfaces, second sub-sheath is coated on described first inner restrictive coating outer surface, and the 3rd sub-sheath is coated on described second inner restrictive coating outer surface.Telecommunication cable of the present invention have not easy to crack, meet water do not decompose, stretch-proof, corrosion-resistant; And reduce signal and mutually disturb impact on serviceability, while ensureing telecommunication cable Transmission characteristic, considerably increase cable because of signal disturbing, stretching and affect the ability of serviceability.
Description
Technical field
The present invention relates to a kind of telecommunication cable, particularly relate to a kind of telecommunication cable with waterproof, anti-interference function.
Background technology
The structure of common single type telecommunication cable: its primary structure of the cable of pair twist structure is extrude one deck insulation outside copper conductor, stranding after single line pair twist, outside adopts the structure of polyolefin oversheath, coaxial cable primary structure is extrude outside inner wire or the insulation of wrapped one deck, then adopt aluminium foil or braiding as the structure of polyolefin after outer conductor as oversheath, because the said structure of telecommunication cable limits to, in exterior finish distributing system, automated detection system, cause that stretching is comparatively large, quality is unstable, it is loaded down with trivial details to connect up, unreliable and affect serviceability.
Summary of the invention
The invention provides a kind of telecommunication cable with waterproof, anti-interference function, this telecommunication cable have not easy to crack, meet that water does not decompose, stretch-proof, the feature such as corrosion-resistant, considerably increase cable because of environment for use special; Reduce signal and mutually disturb impact on serviceability, while ensureing telecommunication cable Transmission characteristic, considerably increase cable because of signal disturbing, stretching and affect the ability of serviceability.
For achieving the above object, the technical solution used in the present invention is: a kind of mixed type telecommunication cable with stretch-proof, anti-interference function, comprising: steel conductor, copper spindle guide body, eight copper conductor and oversheath bodies being coated with polyethylene layer; Described copper spindle guide external surface is coated with plastic insulating layer, and this plastic insulating layer outer surface is coated with wire sheathing, and the first inner restrictive coating is coated on described wire sheathing outer surface;
The stranded formation four between two of described eight copper conductors is to the twisted wire pair as information communication, described four twisted pair wire centering first twisted wires pair, second twisted wire pair, 3rd twisted wire to the 4th twisted wire to being arranged in order counterclockwise and stranded formation conductive cable core, first twisted wire to the 3rd twisted wire pair and the second twisted wire to the 4th twisted wire to alternately, described four twisted pair wires are all coated with foil shielding layer to respective outer surface, one polyester belt is wrapped in described foil shielding layer outer surface, second inner restrictive coating is coated on described polyester belt outer surface, described polyester belt and the second inner restrictive coating and four twisted pair wires between gap in be filled with the packed layer that blocks water,
Described oversheath body comprises the first sub-sheath, the second sub-sheath and the 3rd sub-sheath, this first sub-sheath, the second sub-sheath and the 3rd sub-sheath center have one " people " font connecting portion, first of this " people " font connecting portion connects muscle portion, second and is even even connected respectively to described first sub-sheath, the second sub-sheath and the 3rd sub-sheath in muscle portion in muscle portion and the 3rd, first sub-sheath is coated on described steel conductor outside surfaces, second sub-sheath is coated on described first inner restrictive coating outer surface, and the 3rd sub-sheath is coated on described second inner restrictive coating outer surface;
The right pitch of described first twisted wire is 15 ~ 15.5mm, and the right pitch of described second twisted wire is 13.5 ~ 13.9mm, and the right pitch of described 3rd twisted wire is 14.2 ~ 14.6mm, and the right pitch of described 4th twisted wire is 12.7 ~ 13.1mm;
Adjacent segments apart from design formula is: 0.002< ∣
-
∣≤0.013,
Pitch design of being separated by formula is: 0.002< ∣
-
∣≤0.011;
H1 is the right pitch of the first twisted wire, h2 be the second twisted wire to or the right pitch of the 4th twisted wire, h3 is the right pitch of the 3rd twisted wire.
In technique scheme, further improvement opportunity scheme is as follows:
1, in such scheme, the right pitch of described first twisted wire is 15.2mm, and the right pitch of described second twisted wire is 13.7mm, and the right pitch of described 3rd twisted wire is 14.4mm, and the right pitch of described 4th twisted wire is 12.9mm.
2, in such scheme, described four twisted pair wire strands form conductive cable core, and this conductive cable core twisting pitch is that the 4th twisted wire is to 10 of pitch times.
3, in such scheme, described first muscle portion of company, second connects muscle portion and first company's adjacent angle in muscle portion is 120 °.
4, in such scheme, described steel conductor and all annealed PROCESS FOR TREATMENT of copper conductor.
5, in such scheme, described foil shielding layer is made up of laminated polyester film and the aluminium foil layer being positioned at its medial surface, and described polyester film layer thickness is 0.020 ± 0.002mm, and described aluminium foil layer thickness is 0.014 ± 0.002mm.
Because technique scheme is used, the present invention compared with prior art has following advantages:
1, the present invention has the mixed type telecommunication cable of stretch-proof, anti-interference function, both the circumstance complication of cable in work progress had effectively been solved, such as in the distribution system in the power supply-distribution system and building of machine room, the wiring of cable brings many inconvenience, cable can produce certain electromagnetic field when running around, thus interference other system, can the other problems such as equipment operation failure be caused time serious; It also avoid and pull cable, there is good tensile strength and elongation, both guaranteed the self-bearing ability meeting cable, also solve the problem of cable interference mutually in running simultaneously, ensure that the long-term stability of transmission characteristic, have again emergency maintenance convenient, can the advantage such as Reusability, there is obvious economic benefit and promotional value, the test of material rising-heat contracting-cold when can stand variation of ambient temperature, therefore can extend the useful life of cable, not easily be corroded, long service life.
2, the present invention has the mixed type telecommunication cable of stretch-proof, anti-interference function, breach the circular configuration of traditional strand to stranding after line, effectively improve the surplus of communication cable cross-talk (NEXT, FEXT) index 1%, even also improve the 1dB surplus of loss (INSERTIONLOSS), increase by 1.5% stability of characteristic impedance (IMPEDANCE), simultaneously while guaranteeing the transmission performance that cable is stable, add the performance of the transmission electricity of copper cable.
3, the present invention has the mixed type telecommunication cable of stretch-proof, anti-interference function, specific strand is adopted to become core pitch to combine line with strand to string pitch collocation and specific conductive cable core, reduce transmission of electric signals on its loop, produce electromagnetic induction impact, greatly reduce the cross-talk of the communications cable, the electric field that wherein capacitive sensing produces has both positive and negative polarity, can cancel each other after adjacent two induction field superpositions, reduce mutual capacitively coupled, taken into account other electric parameter, it also avoid signal of telecommunication delay inequality increases simultaneously.
Accompanying drawing explanation
Accompanying drawing 1 is mixed type telecommunication cable structural representation one of the present invention;
Accompanying drawing 2 is mixed type telecommunication cable structural representation two of the present invention.
In above accompanying drawing: 1, steel conductor; 2, copper spindle guide body; 3, copper conductor; 31, polyethylene layer; 4, oversheath body; 41, the first sub-sheath; 42, the second sub-sheath; 43, the 3rd sub-sheath; 5, plastic insulating layer; 6, wire sheathing; 7, the first inner restrictive coating; 8, conductive cable core; 81, the first twisted wire pair; 82, the second twisted wire pair; 83, the 3rd twisted wire pair; 84, the 4th twisted wire pair; 9, foil shielding layer; 10, polyester belt; 11, the second inner restrictive coating; 12, " people " font connecting portion; 121, first connects muscle portion; 122, second connects muscle portion; 123, the 3rd connects muscle portion; 13, block water packed layer; 14, proof copper-wire braided screen.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment 1: a kind of mixed type telecommunication cable with stretch-proof, anti-interference function, comprising: steel conductor 1, copper spindle guide body 2, eight are coated with copper conductor 3 and the oversheath body 4 of polyethylene layer 31; Described copper spindle guide body 2 outer surface is coated with plastic insulating layer 5, and this plastic insulating layer 5 outer surface is coated with wire sheathing 6, and the first inner restrictive coating 7 is coated on described wire sheathing 6 outer surface;
The stranded formation four between two of described eight copper conductors 3 is to the twisted wire pair as information communication, described four twisted pair wire centering first twisted wires are to 81, second twisted wire is to 82, 3rd twisted wire to 83 and the 4th twisted wire be arranged in order counterclockwise and stranded formation conductive cable core 8 84, first twisted wire to 81 and the 3rd twisted wire to 83 and second twisted wire to 82 and the 4th twisted wire to 84 alternately, described four twisted pair wires are all coated with foil shielding layer 9 to respective outer surface, one polyester belt 10 is wrapped in described foil shielding layer 9 outer surface, second inner restrictive coating 11 is coated on described polyester belt 10 outer surface, described polyester belt 10 and the second inner restrictive coating 11 and four twisted pair wires between gap in be filled with the packed layer 13 that blocks water,
Described oversheath body 4 comprises the first sub-sheath 41, second sub-sheath 42 and the 3rd sub-sheath 43, this first sub-sheath 41, second sub-sheath 42 and the 3rd sub-sheath 43 center have one " people " font connecting portion 12, first of this " people " font connecting portion 12 connects muscle portion 121, second connects muscle portion 122 and the 3rd is even connected respectively to described first sub-sheath 41 in muscle portion 123, second sub-sheath 42 and the 3rd sub-sheath 43, first sub-sheath 41 is coated on described steel conductor 1 outer surface, second sub-sheath 42 is coated on described first inner restrictive coating 7 outer surface, 3rd sub-sheath 43 is coated on described second inner restrictive coating 11 outer surface,
Described first twisted wire is 15.2mm to the pitch of 81, and described second twisted wire is 13.7mm to the pitch of 82, and described 3rd twisted wire is 14.4mm to the pitch of 83, and described 4th twisted wire is 12.9mm to the pitch of 84;
Adjacent segments apart from design formula is: 0.002< ∣
-
∣≤0.013,
Pitch design of being separated by formula is: 0.002< ∣
-
∣≤0.011;
Above-mentioned four twisted pair wire strands form conductive cable core 8, and this conductive cable core 8 twisting pitch is that the 4th twisted wire is to 10 of 84 pitches times.
Above-mentioned first muscle portion of company, second connects muscle portion and first company's adjacent angle in muscle portion is 120 °.
Embodiment 2: a kind of mixed type telecommunication cable with stretch-proof, anti-interference function, comprising: steel conductor 1, copper spindle guide body 2, eight are coated with copper conductor 3 and the oversheath body 4 of polyethylene layer 31; Described copper spindle guide body 2 outer surface is coated with plastic insulating layer 5, and this plastic insulating layer 5 outer surface is coated with wire sheathing 6, and the first inner restrictive coating 7 is coated on described wire sheathing 6 outer surface;
The stranded formation four between two of described eight copper conductors 3 is to the twisted wire pair as information communication, described four twisted pair wire centering first twisted wires are to 81, second twisted wire is to 82, 3rd twisted wire to 83 and the 4th twisted wire be arranged in order counterclockwise and stranded formation conductive cable core 8 84, first twisted wire to 81 and the 3rd twisted wire to 83 and second twisted wire to 82 and the 4th twisted wire to 84 alternately, described four twisted pair wires are all coated with foil shielding layer 9 to respective outer surface, one polyester belt 10 is wrapped in described foil shielding layer 9 outer surface, second inner restrictive coating 11 is coated on described polyester belt 10 outer surface, described polyester belt 10 and the second inner restrictive coating 11 and four twisted pair wires between gap in be filled with the packed layer 13 that blocks water,
Described oversheath body 4 comprises the first sub-sheath 41, second sub-sheath 42 and the 3rd sub-sheath 43, this first sub-sheath 41, second sub-sheath 42 and the 3rd sub-sheath 43 center have one " people " font connecting portion 12, first of this " people " font connecting portion 12 connects muscle portion 121, second connects muscle portion 122 and the 3rd is even connected respectively to described first sub-sheath 41 in muscle portion 123, second sub-sheath 42 and the 3rd sub-sheath 43, first sub-sheath 41 is coated on described steel conductor 1 outer surface, second sub-sheath 42 is coated on described first inner restrictive coating 7 outer surface, 3rd sub-sheath 43 is coated on described second inner restrictive coating 11 outer surface,
Proof copper-wire braided screen 14 is provided with between described second sub-sheath 42 and the first inner restrictive coating 7, both external diameter can not be increased, the tractive effort needed can be ensured again, thus ensure that the adhesive between the second sub-sheath 42 and the first inner restrictive coating 7, serve humidification, there is very large tensile strength, also can eliminate or reduce the stress of cable when movement or twisting states, improve the useful life of cable; Secondly, further enhancing interference free performance.
Described first twisted wire is 15.3mm to the pitch of 81, and described second twisted wire is 13.5mm to the pitch of 82, and described 3rd twisted wire is 14.6mm to the pitch of 83, and described 4th twisted wire is 13mm to the pitch of 84;
Adjacent segments apart from design formula is: 0.002< ∣
-
∣≤0.013,
Pitch design of being separated by formula is: 0.002< ∣
-
∣≤0.011;
H1 be the first twisted wire to 81 pitch, h2 be the second twisted wire to 82 or the 4th twisted wire to 84 pitch, h3 be the 3rd twisted wire to 83 pitch.
Above-mentioned four twisted pair wire strands form conductive cable core 8, and this conductive cable core 8 twisting pitch is that the 4th twisted wire is to 10 of 84 pitches times.
Above-mentioned foil shielding layer 9 is made up of laminated polyester film and the aluminium foil layer being positioned at its medial surface, and described polyester film layer thickness is 0.020 ± 0.002mm, and described aluminium foil layer thickness is 0.014 ± 0.002mm; Above-mentioned first muscle portion of company, second connects muscle portion and first company's adjacent angle in muscle portion is 120 °; Above-mentioned steel conductor 1 and all annealed PROCESS FOR TREATMENT of copper conductor 3.
Foregoing is further described below.
The design of aluminum foil material
According to telecommunication cable standard and requirement, shield and be made up of one deck one side clad aluminum foil and a drain wire, one side clad aluminum foil requires to refer to following table:
The technical requirement of one side clad aluminum foil
Weave copper wire material used design
According to telecommunication cable standard and requirement, the braided material of armour can be single circular copper wire or tin-plating round copper wire, and allow unidirectional sub-thread broken string length to be not more than 150mm, trimmed is answered in broken string termination
The main performance index of finished cable
Conductor DC resistance (20 DEG C) :≤96 Ω/km;
The characteristic impedance (20 DEG C) of paired cable: 100 ± 15 Ω;
The characteristic impedance (20 DEG C) of coaxial cable: 75 ± 15 Ω;
The insulation resistance of cable: >=10000M Ω km.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (1)
1. there is a telecommunication cable for waterproof, anti-interference function, it is characterized in that: comprising: steel conductor (1), copper spindle guide body (2), eight copper conductor (3) and oversheath bodies (4) being coated with polyethylene layer (31); Described copper spindle guide body (2) outer surface is coated with plastic insulating layer (5), and this plastic insulating layer (5) outer surface is coated with wire sheathing (6), and the first inner restrictive coating (7) is coated on described wire sheathing (6) outer surface;
The stranded formation four between two of described eight copper conductors (3) is to the twisted wire pair as information communication, described four twisted pair wire centering first twisted wires are to (81), second twisted wire is to (82), 3rd twisted wire is arranged in order and stranded formation conductive cable core (8) (84) counterclockwise to (83) and the 4th twisted wire, first twisted wire to (81) and the 3rd twisted wire to (83) and the second twisted wire to (82) and the 4th twisted wire to (84) alternately, described four twisted pair wires are all coated with foil shielding layer (9) to respective outer surface, one polyester belt (10) is wrapped in described foil shielding layer (9) outer surface, second inner restrictive coating (11) is coated on described polyester belt (10) outer surface, the packed layer that blocks water (13) is filled with between described polyester belt (10) and the second inner restrictive coating (11), polyester belt (10) and four twisted pair wires between gap in be filled with the packed layer that blocks water (13),
Described oversheath body (4) comprises the first sub-sheath (41), second sub-sheath (42) and the 3rd sub-sheath (43), this first sub-sheath (41), second sub-sheath (42) and the 3rd sub-sheath (43) center have one " people " font connecting portion (12), first of this " people " font connecting portion (12) connects muscle portion (121), second company muscle portion (122) and the 3rd connects muscle portion (123) and is connected respectively to described first sub-sheath (41), second sub-sheath (42) and the 3rd sub-sheath (43), first sub-sheath (41) is coated on described steel conductor (1) outer surface, second sub-sheath (42) is coated on described first inner restrictive coating (7) outer surface, 3rd sub-sheath (43) is coated on described second inner restrictive coating (11) outer surface,
Described first twisted wire is 15 ~ 15.5mm to the pitch of (81), and described second twisted wire is 13.5 ~ 13.9mm to the pitch of (82), and described 3rd twisted wire is 14.2 ~ 14.6mm to the pitch of (83), and described 4th twisted wire is 12.7 ~ 13.1mm to the pitch of (84);
Adjacent segments apart from design formula is: 0.002< ∣
-
∣≤0.013,
Pitch design of being separated by formula is: 0.002< ∣
-
∣≤0.011;
H1 is the pitch of the first twisted wire to (81), and h2 is the second twisted wire to (82) or the 4th twisted wire to the pitch of (84), and h3 is that the 3rd twisted wire is to the pitch of (83).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310088361.1A CN103165244B (en) | 2013-03-19 | 2013-03-19 | There is the telecommunication cable of waterproof, anti-interference function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310088361.1A CN103165244B (en) | 2013-03-19 | 2013-03-19 | There is the telecommunication cable of waterproof, anti-interference function |
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| CN103165244A CN103165244A (en) | 2013-06-19 |
| CN103165244B true CN103165244B (en) | 2016-01-13 |
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