CN203325503U

CN203325503U - Low-loss anti-interference communication cable

Info

Publication number: CN203325503U
Application number: CN2013203434041U
Authority: CN
Inventors: 刘党荣; 王惠兵; 吴士杰
Original assignee: Jiangsu Hengtong Wire and Cable Technology Co Ltd
Current assignee: Jiangsu Hengtong Wire and Cable Technology Co Ltd
Priority date: 2013-06-14
Filing date: 2013-06-14
Publication date: 2013-12-04
Anticipated expiration: 2023-06-14

Abstract

The utility model discloses a low-loss anti-interference communication cable including a steel conductor, a copper axle conductor, eight copper conductors and an outer sheath. The eight copper conductors are twisted in pairs, so that four stranded conductor pairs for information communication are formed. The outer sheath includes a first branch sheath, a second branch sheath and a third branch sheath. Centers of the first branch sheath, the second branch sheath and the third branch sheath are provided with a herringbone connection part. The first branch sheath wraps the outer surface of the steel conductor. The second branch sheath wraps the outer surface of a first inner sheath. The third branch sheath wraps the outer surface of the second inner sheath. The steel conductor, a metal braiding layer and a copper wire braiding shielding layer are connected with each other electrically through the outer sheath and metal leads arranged in parallel and at intervals in the herringbone connection part. By using the low-loss anti-interference communication cable provided by the utility model, crosstalk and electric signal delay differences of the low-loss anti-interference communication cable are further reduced, signal power loss is avoided and stability of signal power and performance is improved.

Description

Low-loss type antijam communication cable

Technical field

The utility model relates to a kind of antijam communication cable, relates in particular to a kind of low-loss type antijam communication 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 the single line pair twist, outside adopts the structure of polyolefin oversheath, the 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, said structure limitation due to 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 utility model provides a kind of low-loss type antijam communication cable, and this antijam communication cable further reduces cross-talk and the signal of telecommunication delay inequality of the communications cable, and has avoided the power loss of signal, has improved the stability of signal power and performance.

For achieving the above object, the technical solution adopted in the utility model is: a kind of low-loss type antijam communication cable comprises: steel conductor, copper spindle guide body, eight copper conductor and oversheath bodies that are 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;

Described eight copper conductors are four pairs of twisted wires pair as information communication of stranded formation in twos, 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 all are 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 section of company, second of this " people " font connecting portion connects muscle section and the 3rd muscle section of company is connected to respectively the described 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;

Described steel conductor, wire sheathing and proof copper-wire braided screen are electrically connected to by some parallel plain conductors alternately that are positioned at oversheath body and " people " font connecting portion.

Further improve technical scheme in technique scheme as follows:

1, in such scheme, described adjacent 2 plain conductors be spaced apart 2.5 ~ 3.5 times of conduction cable core twisting pitch.

2,, in such scheme, described the first muscle section of company, second connects muscle section and the first adjacent angle of muscle section of company is 120 °.

3, in such scheme, described foil shielding layer is comprised 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 utility model compared with prior art has following advantages:

1, the utility model low-loss type antijam communication cable, both effectively solved the circumstance complication of cable in work progress, for example in the power supply-distribution system of machine room and the distribution system in building, the wiring of cable brings many inconvenience, can produce certain electromagnetic field around during the cable operation, thereby the interference other system, can cause the other problems such as equipment operation failure when serious; Avoided pulling cable, there is tensile strength and elongation preferably, both guaranteed to meet the self-supporting ability of cable, also solved the problem of cable phase mutual interference in running simultaneously, guaranteed the long-term stability of transmission characteristic, but there is again the advantages such as the convenient Reusability of emergency maintenance, there is obvious economic benefit and promotional value, the test of material rising-heat contracting-cold in the time of standing variation of ambient temperature, therefore can extend the useful life of cable, be difficult for being corroded, long service life.

2, the utility model low-loss type antijam communication cable, its steel conductor, wire sheathing and proof copper-wire braided screen are electrically connected to by some parallel plain conductors alternately that are positioned at oversheath body and " people " font connecting portion, reduce cross-talk and the signal of telecommunication delay inequality of the communications cable, and avoided the power loss of signal, improved the stability of signal power and performance; Secondly, steel conductor, wire sheathing and proof copper-wire braided screen are electrically connected to by some parallel plain conductors alternately that are positioned at oversheath body and " people " font connecting portion, and described adjacent 2 plain conductors be spaced apart 2.5 ~ 3.5 times of conduction cable core twisting pitch, further reduce cross-talk and the signal of telecommunication delay inequality of the communications cable.

The accompanying drawing explanation

Accompanying drawing 1 is the utility model low-loss type antijam communication cable structure schematic diagram.

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 section; 122, second connects muscle section; 123, the 3rd connects muscle section; 13, plain conductor; 131, the first branch end; 132, the second branch end; 133, the 3rd branch end; 14, proof copper-wire braided screen.

Embodiment

Below in conjunction with drawings and Examples, the utility model is further described:

Embodiment: a kind of low-loss type antijam communication cable comprises: 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 in twos, described four twisted pair wire centering the first twisted wires are arranged in order 84 the 83 and the 4th twisted wire the 82, the 3rd twisted wire and stranded formation conduction cable core 8 counterclockwise to the 81, second twisted wire, the first twisted wire to the 81 and the 3rd twisted wire to the 83 and second twisted wire to the 82 and the 4th twisted wire to 84 alternately, described four twisted pair wires all are 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 section 121, the second muscle section 122 of company and the 3rd connects muscle section 123 and is connected respectively to the described 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,

Be provided with proof copper-wire braided screen 14 between the described the 3rd sub-sheath 43 and the first inner restrictive coating 11, both can not increase external diameter, can guarantee again the tractive effort needed, thereby guaranteed the adhesive between the 3rd sub-sheath 43 and the first inner restrictive coating 11, played humidification, there is very large tensile strength, also can eliminate or reduce the stress of cable when mobile or twisting states, the useful life of improving cable; Secondly, further strengthened interference free performance.

Described steel conductor 1, wire sheathing 6 and proof copper-wire braided screen 14 are electrically connected to by some parallel plain conductors 13 alternately that are positioned at oversheath body 4 and " people " font connecting portion 12, described adjacent 2 plain conductors 13 be spaced apart 2.8 or 3.2 times of conduction cable core 8 twisting pitch, the first branch end 131 of plain conductor 13 is connected to described steel conductor 1, the second branch end 132 of plain conductor 13 is connected to described wire sheathing 6, and the 3rd branch end 133 of plain conductor 13 is connected to described proof copper-wire braided screen 14.

Above-mentioned four twisted pair wire strands form conduction cable core 8, and these conduction cable core 8 twisting pitch are to 84

pitches

10 or 9 times of the 4th twisted wire.

Above-mentioned foil shielding layer 9 is comprised 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 section of company, second connects muscle section and the first adjacent angle of muscle section of company is 120 °; Above-mentioned steel conductor 1 and copper conductor 3 be annealed PROCESS FOR TREATMENT all.

Foregoing is further described below.

The design of aluminum foil material

According to telecommunication cable standard and requirement, shielding is comprised of one deck single face clad aluminum foil and a drain wire, and the single face clad aluminum foil requires to refer to following table:

The specification requirement of single face 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 the broken string termination

The main performance index of finished cable

Conductor DC resistance (20 ℃) :≤9 6 Ω/km;

The characteristic impedance of paired cable (20 ℃): 100 ± 15 Ω;

The characteristic impedance of coaxial cable (20 ℃): 75 ± 15 Ω;

The insulation resistance of cable: >=10000 M Ω km.

Above-described embodiment is only explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection range of the present utility model.

Claims

1. a low-loss type antijam communication cable, is characterized in that: 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 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 in twos, 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 to (83) and the 4th twisted wire is arranged in order counterclockwise to (84) and stranded formation conduction cable core (8), 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 all are 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 section (121), the second muscle section (122) of company and the 3rd connects muscle section (123) and is connected respectively to the described 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,

Described steel conductor (1), wire sheathing (6) and proof copper-wire braided screen (14) are electrically connected to by some parallel plain conductors (13) alternately that are positioned at oversheath body (4) and " people " font connecting portion (12).

2. antijam communication cable according to claim 1 is characterized in that: described adjacent 2 plain conductors (13) be spaced apart 2.5 ~ 3.5 times of conduction cable core (8) twisting pitch.

3. antijam communication cable according to claim 1, it is characterized in that: described foil shielding layer (9) is comprised 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.

4. antijam communication cable according to claim 1 is characterized in that: described first connects muscle section, second connects muscle section and first to connect the adjacent angle of muscle section is 120 °.