CN104064276A - Anti-tensile type communication cable - Google Patents
Anti-tensile type communication cable Download PDFInfo
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- CN104064276A CN104064276A CN201310088510.4A CN201310088510A CN104064276A CN 104064276 A CN104064276 A CN 104064276A CN 201310088510 A CN201310088510 A CN 201310088510A CN 104064276 A CN104064276 A CN 104064276A
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Abstract
The invention discloses an anti-tensile type communication cable comprising a steel conductor, a copper shaft conductor, eight copper conductive wires and an external sheath body. The eight copper conductive wires are twisted in a way that two of the eight copper conductive wires are twisted so that four pairs of twisting wire pairs for information communication are formed. The external sheath body comprises a first sub-sheath, a second sub-sheath and a third sub-sheath. The center of the first sub-sheath, the second sub-sheath and the third sub-sheath is provided with a connecting part with the shape of Chinese character "ren". The first sub-sheath wraps the external surface of the steel conductor. The second sub-sheath wraps the external surface of a first internal sheath layer. The third sub-sheath warps the external surface of a second internal sheath layer. One end of each of multiple metal conductive wires is wound on the surface of the steel conductor, and the other end is electrically connected with a metal braiding layer. According to the anti-tensile type communication cable, influence of signal mutual interference on use performance is avoided, transmission characteristics of the communication cable product are ensured, and capacity of resisting influence of signal interference and tensile on the cable is greatly increased.
Description
Technical field
The present invention relates to a kind of telecommunication cable, relate in particular to a kind of stretch-proof type communications cable.
Background technology
The structure of common single type telecommunication cable: its primary structure of the cable of pair twist structure is that copper conductor extrudes one deck insulation outward, stranding after single line pair twist, outside adopts the structure of polyolefin oversheath, coaxial cable primary structure is that inner wire extrudes outward or the insulation of wrapped one deck, then adopt aluminium foil or weave as polyolefin after outer conductor the structure as oversheath, due to the said structure limitation of telecommunication cable, in exterior finish distributing system, automated detection system, cause that stretching is 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 stretch-proof type communications cable, that this stretch-proof type communications cable has is not easy to crack, meet that water does not decompose, stretch-proof, the feature such as corrosion-resistant, greatly increased cable because of environment for use special; Avoid the mutual interference of signal phase and affected serviceability, when ensureing telecommunication cable Transmission characteristic, greatly increased cable because signal disturbs, stretching affects the ability of serviceability.
For achieving the above object, the technical solution used in the present invention is: a kind of stretch-proof type communications cable, comprising: steel conductor, copper spindle guide body, eight are coated with copper conductor and the oversheath body of 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;
Described eight copper conductors are four pairs of twisted wires pair as information communication of stranded formation between two, described four twisted pair wire centering the first twisted wires to, the second twisted wire to, the 3rd twisted wire to the 4th twisted wire to being arranged in order counterclockwise and stranded formation conduction cable core, the 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 outer surface separately, one polyester belt is wrapped in described foil shielding layer outer surface, and the second inner restrictive coating is coated on described polyester belt outer surface;
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, the first muscle portion of company, second of this " people " font connecting portion connects muscle portion and the 3rd muscle portion of company is connected respectively to described the first sub-sheath, the second sub-sheath and the 3rd sub-sheath, the first sub-sheath is coated on described steel conductor outer surface, the second sub-sheath is coated on described the first inner restrictive coating outer surface, and the 3rd sub-sheath is coated on described the second inner restrictive coating outer surface;
Some plain conductors alternately, this plain conductor one end is wound in described steel conductive surface, and the plain conductor other end connects muscle portion, second through described the first sub-sheath, first successively and connects muscle portion, the second sub-sheath and the first inner restrictive coating and be electrically connected to described wire sheathing;
Described the first twisted wire to the right pitch of the 3rd twisted wire be greater than the second twisted wire to the right pitch of the 4th twisted wire, the right pitch of described the first twisted wire is greater than the right pitch of the 3rd twisted wire, the right pitch of described the second twisted wire is greater than the right pitch of the 4th twisted wire;
Adjacent segments apart from design formula is: 0.002< ∣
-
∣≤0.013,
The pitch design of being separated by formula is: 0.001< ∣
-
∣≤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 improve technical scheme as follows:
1, in such scheme, the right pitch of described the first twisted wire is 15 ~ 15.5mm, and the right pitch of described the second twisted wire is 13.5 ~ 13.9mm, and the right pitch of described the 3rd twisted wire is 14.2 ~ 14.6mm, and the right pitch of described the 4th twisted wire is 12.7 ~ 13.1mm.
2, in such scheme, the right pitch of described the first twisted wire is 15.2mm, and the right pitch of described the second twisted wire is 13.7mm, and the right pitch of described the 3rd twisted wire is 14.4mm, and the right pitch of described the 4th twisted wire is 12.9mm.
3, in such scheme, described four twisted pair wire strands form conduction cable core, and this conduction cable core twisting pitch is that the 4th twisted wire is to 10 of 12.9mm times.
4,, in such scheme, described the first muscle portion of company, second connects muscle portion and the first adjacent angle of muscle portion of company is 120 °.
5, in such scheme, all annealed PROCESS FOR TREATMENT of described steel conductor and copper conductor.
6, in such scheme, described foil shielding layer is made up of laminated polyester film and the aluminium foil layer that is 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 ± 0.002 mm.
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 effectively solved the circumstance complication of cable in work progress, for example in the distribution system in power supply-distribution system and the building of machine room, the wiring of cable brings many inconvenience, when cable operation, can produce around certain electromagnetic field, thereby interference other system, can cause the other problems such as equipment operation failure when serious; Avoid pulling cable, there is good tensile strength and elongation, both guaranteed to meet the self-supporting ability of cable, also solved the problem of cable phase mutual interference in running simultaneously, guarantee the long-term stability of transmission characteristic, have again emergency maintenance convenient, can Reusability etc. advantage, there is obvious economic benefit and promotional value, the test of material rising-heat contracting-cold can stand variation of ambient temperature time, in the useful life that therefore can extend cable, be difficult for being corroded, long service life.
2, the present invention has the mixed type telecommunication cable of stretch-proof, anti-interference function, broken through traditional strand to line after the circular configuration of stranding, effectively improve the surplus of communication cable cross-talk (NEXT, FEXT) index 1%, even also improve the 1dB surplus of loss (INSERTION LOSS), increase by 1.5% stability of characteristic impedance (IMPEDANCE), in guaranteeing the stable transmission performance of cable, increased the performance of the transmission electricity of copper cable simultaneously.
3, the present invention has the mixed type telecommunication cable of stretch-proof, anti-interference function, adopt specific strand to become core pitch and strand to combine line to string pitch collocation and the cable core that specifically conducts electricity, reduce transmission of electric signals and on its loop, produced 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, after adjacent two induction field stacks, can cancel each other, reduce mutual capacitively coupled, take into account other electric parameter simultaneously, also avoided signal of telecommunication delay inequality to increase.
4, the stretch-proof type communications cable of the present invention, it comprises some plain conductors alternately, this plain conductor one end is wound in described steel conductive surface, the plain conductor other end connects muscle portion, second through described the first sub-sheath, first successively and connects muscle portion, the second sub-sheath and the first inner restrictive coating and be electrically connected to described wire sheathing, avoid power loss and the signal reflex of signal to return transmission source, improved the stability of signal power and performance.
Brief description of the drawings
Accompanying drawing 1 is stretch-proof type communications cable structural representation one of the present invention;
Accompanying drawing 2 is stretch-proof type communications 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, conduction 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, plain conductor; 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 stretch-proof type communications cable, comprising: steel conductor 1, copper spindle guide body 2, eight copper conductor 3 and oversheath bodies 4 that are coated with polyethylene layer 31; Described copper spindle guide body 2 outer surfaces are coated with plastic insulating layer 5, and these plastic insulating layer 5 outer surfaces are coated with wire sheathing 6, the first inner restrictive coatings 7 and are coated on described wire sheathing 6 outer surfaces;
Described eight copper conductors 3 are four pairs of twisted wires pair as information communication of stranded formation between two, described four twisted pair wire centering the first twisted wires to 81, the second twisted wire to 82, the 3rd twisted wire to 83 and the 4th twisted wire be arranged in order counterclockwise 84 and stranded formation conduction cable core 8, the 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 outer surface separately, one polyester belt 10 is wrapped in described foil shielding layer 9 outer surfaces, and the second inner restrictive coating 11 is coated on described polyester belt 10 outer surfaces;
Described oversheath body 4 comprises the first sub-sheath 41, the second sub-sheath 42 and the 3rd sub-sheath 43, this first sub-sheath 41, the second sub-sheath 42 and the 3rd sub-sheath 43 centers have one " people " font connecting portion 12, first of this " people " font connecting portion 12 connects muscle portion 121, the second muscle portion 122 of company and the 3rd connects muscle portion 123 and is connected respectively to described the first sub-sheath 41, the second sub-sheath 42 and the 3rd sub-sheath 43, the first sub-sheath 41 is coated on described steel conductor 1 outer surface, the second sub-sheath 42 is coated on described the first inner restrictive coating 7 outer surfaces, the 3rd sub-sheath 43 is coated on described the second inner restrictive coating 11 outer surfaces,
Some plain conductors 13 alternately, these plain conductor 13 one end are wound in described steel conductor 1 surface, and plain conductor 13 other ends pass successively described the first sub-sheath 41, the first muscle portion of company 121, second company's muscle portion 122, the second sub-sheath 42 and the first inner restrictive coating 7 and are electrically connected to described wire sheathing 6;
Described the first twisted wire to 81 and the 3rd twisted wire to 83 pitch be greater than the second twisted wire to 82 and the 4th twisted wire to 84 pitch, described the first twisted wire is greater than the 3rd twisted wire to 83 pitch to 81 pitch, and described the second twisted wire is greater than the 4th twisted wire to 84 pitch to 82 pitch;
Adjacent segments apart from design formula is: 0.002< ∣
-
∣≤0.013,
The pitch design of being separated by formula is: 0.001< ∣
-
∣≤0.011;
H1 is the first twisted wire to 81 pitch, h2 be the second twisted wire to 82 or the 4th twisted wire to 84 pitch, h3 is the 3rd twisted wire to 83 pitch.
Described the first twisted wire is 15.2mm to 81 pitch, and described the second twisted wire is 13.7mm to 82 pitch, and described the 3rd twisted wire is 14.4mm to 83 pitch, and described the 4th twisted wire is 12.9mm to 84 pitch.
Above-mentioned four twisted pair wire strands form conduction cable core 8, and these conduction cable core 8 twisting pitch are the 4th twisted wire to 84 10 times.
Above-mentioned the first muscle portion of company, second connects muscle portion and the first adjacent angle of muscle portion of company is 120 °.
Embodiment 2: a kind of stretch-proof type communications cable, comprising: steel conductor 1, copper spindle guide body 2, eight copper conductor 3 and oversheath bodies 4 that are coated with polyethylene layer 31; Described copper spindle guide body 2 outer surfaces are coated with plastic insulating layer 5, and these plastic insulating layer 5 outer surfaces are coated with wire sheathing 6, the first inner restrictive coatings 7 and are coated on described wire sheathing 6 outer surfaces;
Described eight copper conductors 3 are four pairs of twisted wires pair as information communication of stranded formation between two, described four twisted pair wire centering the first twisted wires to 81, the second twisted wire to 82, the 3rd twisted wire to 83 and the 4th twisted wire be arranged in order counterclockwise 84 and stranded formation conduction cable core 8, the 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 outer surface separately, one polyester belt 10 is wrapped in described foil shielding layer 9 outer surfaces, and the second inner restrictive coating 11 is coated on described polyester belt 10 outer surfaces;
Described oversheath body 4 comprises the first sub-sheath 41, the second sub-sheath 42 and the 3rd sub-sheath 43, this first sub-sheath 41, the second sub-sheath 42 and the 3rd sub-sheath 43 centers have one " people " font connecting portion 12, first of this " people " font connecting portion 12 connects muscle portion 121, the second muscle portion 122 of company and the 3rd connects muscle portion 123 and is connected respectively to described the first sub-sheath 41, the second sub-sheath 42 and the 3rd sub-sheath 43, the first sub-sheath 41 is coated on described steel conductor 1 outer surface, the second sub-sheath 42 is coated on described the first inner restrictive coating 7 outer surfaces, the 3rd sub-sheath 43 is coated on described the second inner restrictive coating 11 outer surfaces,
Between described the 3rd sub-sheath 43 and the first inner restrictive coating 11, be provided with proof copper-wire braided screen 14, both can not increase external diameter, can ensure again the tractive effort needing, thereby ensure the adhesive between the 3rd sub-sheath 43 and the first inner restrictive coating 11, play humidification, there is very large tensile strength, also can eliminate or reduce the stress of cable in the time of mobile or twisting states, the useful life of improving cable; Secondly, further strengthened interference free performance.
Some plain conductors 13 alternately, these plain conductor 13 one end are wound in described steel conductor 1 surface, and plain conductor 13 other ends pass successively described the first sub-sheath 41, the first muscle portion of company 121, second company's muscle portion 122, the second sub-sheath 42 and the first inner restrictive coating 7 and are electrically connected to described wire sheathing 6;
Described the first twisted wire to 81 and the 3rd twisted wire to 83 pitch be greater than the second twisted wire to 82 and the 4th twisted wire to 84 pitch, described the first twisted wire is greater than the 3rd twisted wire to 83 pitch to 81 pitch, and described the second twisted wire is greater than the 4th twisted wire to 84 pitch to 82 pitch;
Adjacent segments apart from design formula is: 0.002< ∣
-
∣≤0.013,
The pitch design of being separated by formula is: 0.001< ∣
-
∣≤0.011;
H1 is the first twisted wire to 81 pitch, h2 be the second twisted wire to 82 or the 4th twisted wire to 84 pitch, h3 is the 3rd twisted wire to 83 pitch.
Described the first twisted wire is 15.5mm to 81 pitch, and described the second twisted wire is 13.8mm to 82 pitch, and described the 3rd twisted wire is 14.6mm to 83 pitch, and described the 4th twisted wire is 13 mm to 84 pitch.
Above-mentioned four twisted pair wire strands form conduction cable core 8, and these conduction cable core 8 twisting pitch are 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 that is 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 ± 0.002 mm; Above-mentioned the first muscle portion of company, second connects muscle portion and the first adjacent angle of muscle portion of company is 120 °; All annealed PROCESS FOR TREATMENT of above-mentioned steel conductor 1 and copper conductor 3.
Foregoing is further described below.
The design of aluminum foil material
According to telecommunication cable standard and requirement, shielding is made up of one deck one side clad aluminum foil and a drain wire, and 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, allows unidirectional sub-thread broken string length to be not more than 150mm, and trimmed is answered in broken string termination
The main performance index of finished cable
Conductor DC resistance (20 DEG C) :≤9 6 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: >=10000 M Ω km.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (7)
1. a stretch-proof type communications cable, is characterized in that: 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;
Described eight copper conductors (3) are four pairs of twisted wires pair as information communication of stranded formation between two, described four twisted pair wire centering the first twisted wires are to (81), the second twisted wire is to (82), the 3rd twisted wire is arranged in order (84) and stranded formation conduction cable core (8) counterclockwise to (83) and the 4th twisted wire, the 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 outer surface separately, one polyester belt (10) is wrapped in described foil shielding layer (9) outer surface, the second inner restrictive coating (11) is coated on described polyester belt (10) outer surface,
Described oversheath body (4) comprises the first sub-sheath (41), the second sub-sheath (42) and the 3rd sub-sheath (43), this first sub-sheath (41), the 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), the second muscle portion of company (122) and the 3rd connects muscle portion (123) and is connected respectively to described the first sub-sheath (41), the second sub-sheath (42) and the 3rd sub-sheath (43), the first sub-sheath (41) is coated on described steel conductor (1) outer surface, the second sub-sheath (42) is coated on described the first inner restrictive coating (7) outer surface, the 3rd sub-sheath (43) is coated on described the second inner restrictive coating (11) outer surface,
Some plain conductors (13) alternately, this plain conductor (13) one end is wound in described steel conductor (1) surface, and plain conductor (13) other end connects muscle portion (121), second through described the first sub-sheath (41), first successively and connects muscle portion (122), the second sub-sheath (42) and the first inner restrictive coating (7) and be electrically connected to described wire sheathing (6);
Described the first twisted wire is greater than the second twisted wire to (82) and the pitch of the 4th twisted wire to (84) to (81) and the 3rd twisted wire to the pitch of (83), described the first twisted wire is greater than the pitch of the 3rd twisted wire to (83) to the pitch of (81), and described the second twisted wire is greater than the pitch of the 4th twisted wire to (84) to the pitch of (82);
Adjacent segments apart from design formula is: 0.002< ∣
-
∣≤0.013,
The pitch design of being separated by formula is: 0.001< ∣
-
∣≤0.011;
H1 is the pitch of the first twisted wire to (81), h2 be the second twisted wire to (82) or the pitch of the 4th twisted wire to (84), h3 is the pitch of the 3rd twisted wire to (83).
2. the communications cable according to claim 1, it is characterized in that: described the first twisted wire is 15 ~ 15.5mm to the pitch of (81), described the second twisted wire is 13.5 ~ 13.9mm to the pitch of (82), described the 3rd twisted wire is 14.2 ~ 14.6mm to the pitch of (83), and described the 4th twisted wire is 12.7 ~ 13.1mm to the pitch of (84).
3. the communications cable according to claim 2, it is characterized in that: described the first twisted wire is 15.2mm to the pitch of (81), described the second twisted wire is 13.7mm to the pitch of (82), described the 3rd twisted wire is 14.4mm to the pitch of (83), and described the 4th twisted wire is 12.9mm to the pitch of (84).
4. according to the communications cable described in any one in claim 1 ~ 3, it is characterized in that: described four twisted pair wire strands form conduction cable core (8), this conduction cable core (8) twisting pitch is that the 4th twisted wire is to 10 of (84) times.
5. according to the communications cable described in any one in claim 1 ~ 3, it is characterized in that: described foil shielding layer (9) is made up of laminated polyester film and the aluminium foil layer that is positioned at its medial surface, described polyester film layer thickness is 0.020 ± 0.002mm, and described aluminium foil layer thickness is 0.014 ± 0.002 mm.
6. according to the communications cable described in any one in claim 1 ~ 3, it is characterized in that: described the first muscle portion of company, second connects muscle portion and the first adjacent angle of muscle portion of company is 120 °.
7. according to the communications cable described in any one in claim 1 ~ 3, it is characterized in that: described steel conductor (1) and all annealed PROCESS FOR TREATMENT of copper conductor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310088510.4A CN104064276B (en) | 2013-03-19 | 2013-03-19 | The stretch-proof type communications cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310088510.4A CN104064276B (en) | 2013-03-19 | 2013-03-19 | The stretch-proof type communications cable |
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| Publication Number | Publication Date |
|---|---|
| CN104064276A true CN104064276A (en) | 2014-09-24 |
| CN104064276B CN104064276B (en) | 2017-06-06 |
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|---|---|---|---|
| CN201310088510.4A Active CN104064276B (en) | 2013-03-19 | 2013-03-19 | The stretch-proof type communications cable |
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| CN104064276B (en) | 2017-06-06 |
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