CN202584916U - Digital cable with steel band armor - Google Patents
Digital cable with steel band armor Download PDFInfo
- Publication number
- CN202584916U CN202584916U CN 201220107481 CN201220107481U CN202584916U CN 202584916 U CN202584916 U CN 202584916U CN 201220107481 CN201220107481 CN 201220107481 CN 201220107481 U CN201220107481 U CN 201220107481U CN 202584916 U CN202584916 U CN 202584916U
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- cable
- coated
- layer
- steel band
- digital cable
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- Expired - Fee Related
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Abstract
Disclosed is a digital cable with a steel band armor, comprising four wire-twisting pairs with external surfaces thereof being respectively coated with an aluminium foil shielding layer, wherein the wire-twisting pair is formed by twisting two copper leads; the surface of the copper lead is coated with a polyethylene layer as an insulating layer; the external surfaces of the four wire-twisting pairs are respectively coated with a polyvinyl chloride inner sheath; the external surface of the polyvinyl chloride inner sheath is coated with an armoured steel band layer; the external surface of the armoured steel band layer is coated with a polyethylene oversheath; and the proportion range of the girth of the armoured steel band layer to the thickness of the armoured steel band layer ranges from 1:100 to 1:160. The digital cable of the utility model effectively solves the problem of large stretching of the cable in the construction process, ensures the long-term stability of the transmission characteristic of the cable, facilitates emergency maintenance, allows repeated usage, and is capable of avoiding the biting of the bugs and mice
Description
Technical field
The utility model relates to telecommunication cable, relates in particular to a kind of digital cable with steel-tape armouring.
Background technology
The structure of common outdoor digital cable: outdoor digital cable generally is to be used for outside run; Its primary structure is the structure of one deck PE (polyethylene) oversheath outside cable conductor; Because the said structure of outdoor digital cable limitation; In dwelling house exterior finish netting twine distributing system, automated detection system, cause that stretching is big, quality is unstable, unreliable and influence serviceability.Therefore; To the above defective of prior art, how to design the stretch-proof of a kind of cable in work progress, and can guarantee that its transmission characteristic is steady in a long-term; Have emergency maintenance again and make things convenient for, can use repeatedly, prevent that the worm mouse from knocking the digital cable of stinging, become the direction that those of ordinary skills make great efforts.
Summary of the invention
The utility model provides a kind of digital cable with steel-tape armouring; On digital cable transmission characteristic basis; Efficiently solve the big problem of the stretching of cable in work progress, guarantee that its transmission characteristic is steady in a long-term, have emergency maintenance again and make things convenient for, can use repeatedly, prevent that the worm mouse from knocking stings.
For achieving the above object; The technical scheme that the utility model adopts is: a kind of digital cable with steel-tape armouring; Comprise: the twisted wire that four outer surfaces are coated with foil shielding layer is right; This twisted wire is to by two copper conductor stranded compositions, and this copper conductor surface is coated with the polyethylene layer as insulating barrier, and these four twisted wire outer surface are coated with one polyvinyl chloride sheath; One armouring tape layer is coated on said polyvinyl chloride sheath outer surface, and a polyethylene oversheath is coated on said armouring tape layer outer surface.
It is following that technique scheme is further improved technical scheme:
1. in the such scheme, said armouring tape layer applies a laminated polyester film by galvanized steel strip and forms.
2. in the such scheme, the girth of said armouring tape layer and the proportion of its thickness are 1: 100～160.
Because the technique scheme utilization, the utility model compared with prior art has advantage:
The utlity model has the digital cable of steel-tape armouring; Have the characteristics of the outer digital cable of alternative conventional chamber, its transmission characteristic can satisfy the transmission requirement of computer cable, because cable has adopted the new structure of armouring; Effectively having improved stretches influences the problem of serviceability greatly; Because the restrictive coating of cable chance water does not decompose, greatly facilitate emergency maintenance simultaneously, improve maintenance efficiency and repair quality; Secondly; Simultaneously because cable adopts the structure of polyolefin oversheath; Guarantee the cable environmental stress cracking resistance, have characteristics such as not easy to crack, that chance water does not decompose, greatly facilitate emergency maintenance; Improve maintenance efficiency and repair quality; Can be used as the emergency maintenance of cable fault in dwelling house exterior finish netting twine or the computer local area machine room at this cable, also can be used as data cable in distributing system, the automated detection system, also can be used as provisional, the reusable emergency maintenance computer transmission cable of cable fault emergency maintenance in the computer local area machine room.
Description of drawings
Accompanying drawing 1 is for the utlity model has the digital cable structural representation of steel-tape armouring.
In the above accompanying drawing: 1, foil shielding layer; 2, twisted wire is right; 3, copper conductor; 4, polyethylene layer; 5, polyvinyl chloride sheath; 6, armouring tape layer; 7, polyethylene oversheath.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Embodiment: a kind of digital cable with steel-tape armouring; Comprise: the twisted wire that four outer surfaces are coated with foil shielding layer 1 is to 2; This twisted wire is to 2 by 3 stranded compositions of two copper conductors, and these copper conductor 3 surfaces are coated with the polyethylene layer 4 as insulating barrier, and these four twisted wires are coated with one polyvinyl chloride sheath 5 to 2 outer surfaces; One armouring tape layer 6 is coated on said polyvinyl chloride sheath 5 outer surfaces, and a polyethylene oversheath 7 is coated on said armouring tape layer 6 outer surface.
Above-mentioned armouring tape layer 6 applies a laminated polyester film by galvanized steel strip and forms.
The girth of above-mentioned armouring tape layer 6 and the proportion of its thickness are 1: 100 or 120 or 140 or 160.
The regulation of thickness of strips and wide following table.
The thickness of strips permissible variation meets the regulation of following table.
| Specification (mm) | Thickness and permissible variation (mm) |
| 0.15 | 0.15±0.01 |
| 0.20 | 0.20±0.02 |
| 0.30 | 0.30±0.03 |
| 0.50 | 0.48±0.03 |
Steel band tensile strength and percentage elongation meet the regulation of following table.
The main performance index of finished cable.
Conductor DC resistance (20 ℃) :≤88.36 Ω/km;
The characteristic impedance of cable (20 ℃): 100 ± 15 Ω;
The mutual capacitance of cable :≤52 nF/km;
The insulation resistance of cable: >=10000 M Ω km
The development process of the utility model technology is following:
The product technology scheme determination.
The main performance index of finished cable.
Conductor DC resistance (20 ℃) :≤88.36 Ω/km;
The characteristic impedance of cable (20 ℃): 100 ± 15 Ω;
The mutual capacitance of cable :≤52 nF/km;
The insulation resistance of cable: >=10000 M Ω km.
When adopting above-mentioned digital cable with steel-tape armouring; Have the characteristics of the outer digital cable of alternative conventional chamber, its transmission characteristic can satisfy the transmission requirement of computer cable, because cable has adopted the new structure of armouring; Effectively having improved stretches influences the problem of serviceability greatly; Because the restrictive coating of cable chance water does not decompose, greatly facilitate emergency maintenance simultaneously, improve maintenance efficiency and repair quality; Secondly; Simultaneously because cable adopts the structure of polyolefin oversheath; Guarantee the cable environmental stress cracking resistance, have characteristics such as not easy to crack, that chance water does not decompose, greatly facilitate emergency maintenance; Improve maintenance efficiency and repair quality; Can be used as the emergency maintenance of cable fault in dwelling house exterior finish netting twine or the computer local area machine room at this cable, also can be used as data cable in distributing system, the automated detection system, also can be used as provisional, the reusable emergency maintenance computer transmission cable of cable fault emergency maintenance in the computer local area machine room.
The foregoing description only is the technical conceive and the characteristics of explanation the utility model, and its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection range of the utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection range of the utility model.
Claims (3)
1. digital cable with steel-tape armouring; It is characterized in that: comprising: the twisted wire that four outer surfaces are coated with foil shielding layer (1) is to (2); This twisted wire to (2) by two copper conductors (3) stranded composition; This copper conductor (3) surface is coated with the polyethylene layer (4) as insulating barrier; These four twisted wires are coated with one polyvinyl chloride sheath (5) to (2) outer surface, and an armouring tape layer (6) is coated on said polyvinyl chloride sheath (5) outer surface, and a polyethylene oversheath (7) is coated on said armouring tape layer (6) outer surface.
2. digital cable according to claim 1 is characterized in that: said armouring tape layer (6) applies a laminated polyester film by galvanized steel strip and forms.
3. digital cable according to claim 1 is characterized in that: the girth of said armouring tape layer (6) and the proportion of its thickness are 1:100 ~ 160.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220107481 CN202584916U (en) | 2012-03-21 | 2012-03-21 | Digital cable with steel band armor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220107481 CN202584916U (en) | 2012-03-21 | 2012-03-21 | Digital cable with steel band armor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202584916U true CN202584916U (en) | 2012-12-05 |
Family
ID=47254303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220107481 Expired - Fee Related CN202584916U (en) | 2012-03-21 | 2012-03-21 | Digital cable with steel band armor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202584916U (en) |
-
2012
- 2012-03-21 CN CN 201220107481 patent/CN202584916U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20150321 |
|
| EXPY | Termination of patent right or utility model |