CN201348895Y - Composite conductor environment-friendly flame-proof digital signal cable - Google Patents
Composite conductor environment-friendly flame-proof digital signal cable Download PDFInfo
- Publication number
- CN201348895Y CN201348895Y CNU2008202375280U CN200820237528U CN201348895Y CN 201348895 Y CN201348895 Y CN 201348895Y CN U2008202375280 U CNU2008202375280 U CN U2008202375280U CN 200820237528 U CN200820237528 U CN 200820237528U CN 201348895 Y CN201348895 Y CN 201348895Y
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- core
- composite conductor
- retardant
- digital signal
- cable
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Abstract
A composite conductor environment-friendly digital signal cable belongs to the technical field of cables, which comprises a single-core insulated wire core, a wire group which is stranded by a plurality of single-core insulated wire cores, a cable core which is stranded by a plurality of wire groups, and a filler, wherein the single-core insulated wire cores comprise a composite conductor and an insulating layer which is coated outside the composite conductor, one layer of polyester belt is wounded outside the wire group which is stranded by a plurality of single-core insulated wire cores, a screening layer is wounded outside the polyester belt, one layer of flame-proof belt layer is wounded outside the cable core which is stranded by a plurality of wire groups, and a main screening layer is wounded on the flame-proof belt layer, and a low-smoke halogen-free flame-proof polyolefin sheath layer is extruded on the main screening layer. The composite conductor environment-friendly digital signal cable has reasonable structure, scientific material selection, economy and excellent property.
Description
Technical field
The utility model relates to a kind of composite conductor environment friendly flame-retardant digital signal cable, belongs to the cable technology field.
Background technology
High speed development along with present informationization, various computer applications are more and more, each large-scale building, main equipment, hot operation district working equipment all generally the system of using a computer carry out work such as signal controlling, detection, monitoring and information processing, and these zones are also very high to the requirement of signal cable.Large-scale building require cable that high security performance and environmental-protecting performance are arranged, and when fire takes place, can not produce toxic gas; Some signal cable passes through some high temperature areas possibly in laying, so also require cable to possess heat resistance preferably.
Existing normal signal cable is owing to use poly-second combustion insulation, its heat resistance is very poor, high-temperature resistant performance can only reach 70 ℃, and cable cover(ing) uses pvc sheath, contain the chlorine element in its material, cable can produce poisonous hydrogen chloride gas if run into fire, because cable conductor adopts the pure cu conductor transmission signals, make the cost of cable higher simultaneously.
The utility model content
The purpose of this utility model provides the composite conductor environment friendly flame-retardant digital signal cable that a kind of economic performance is good, heat resistance is good, antijamming capability is strong, signal transmission quality is high.
Technical solution of the present utility model is: composite conductor environment friendly flame-retardant digital signal cable, comprise single core insulation core, by the stranded line group of some single core insulation cores, by the stranded cable core of some line groups, fill, it is characterized in that single core insulation core is made of the insulating barrier of composite conductor and its outsourcing, by the outer wrapped one deck polyester belt of the stranded line group of some single core insulation cores, polyester belt is surrounded with screen outward, by the outer fire-retardant belt of wrapped one deck of the stranded cable core of some line groups, on fire-retardant belt, be surrounded with total screen, be extruded with the low-smoke and halogen-free flame retardant polyolefin jacket layer on total screen.
Because the signal of signal transmission is generally high-frequency signal, the high-frequency signal electric current mainly concentrates on the surface conductor layer transmission during by conductor, produces so-called " skin effect ", and in conductor core electric current transmitted seldom, even do not have electric current to pass through.So above-mentioned new digital signal cable composite conductor adopts copper cover aluminum composite construction conductor,, improved product economy guaranteeing to greatly reduce production cost under the stable situation of cable signal transmission; The insulating barrier of outsourcing is a crosslinked polyethylene on the composite conductor, adopts crosslinked polyethylene insulation material, makes cable that higher heat resistance be arranged, and mechanical strength is higher, and has low electric capacity, low fade performance.
Line group of the present utility model is carried out the stranded line group of forming by two or four single core insulation cores, and (in the polyester belt) also is surrounded with a branch colour band on each line group.Cable two core groups adopt red, white colour, and the four-core group adopts red, green, white, blue color, is convenient to identifying operation; It is stranded that every group of core adopts the different pitch that is not more than 40 times of core external diameters to carry out, and online group of outer lapped shielding layer, improved the crosstalk attenuation index and the interference free performance of signal cable greatly.
How many line groups are several line groups (adopt to carry out according to user's needs, can adopt 2-61 group core group to carry out stranding and be twisted into cable core) be twisted into cable core with suitable pitch, and outside cable core the fire-retardant band of wrapped one deck, the total screen of wrapped again one deck on fire-retardant band has improved transmission performance, fire resistance and the interference free performance of cable; On total screen, extrude the low smoke halogen-free flame-retardant polyolefin sheath, improved the fire resistance of cable, guarantee that cable does not contain poisonous halogen element, meet the environmental-protecting performance requirement.
Total screen of the screen of each line group and cable core and total screen of cable core are aluminium-plastic tape, copper strips, copper wire braiding or copper cover aluminum braid, and flame-retardant layer is a glass fiber tape.
The utility model digital signal cable is rational in infrastructure, and the selection science is economical and practical, and function admirable has following premium properties index:
1, cable fills and is permitted long-term serviceability temperature and can reach 90 ℃, when instantaneous short circuit takes place (being no more than 5S), can allow conductor temperature to reach 250 ℃.
2, the cable-flame retardant performance can reach the requirement of table 4 code name ZB among the GB/T19666-2005 " fire-retardant and fire-resistant wire and cable general rule ".
3, cable Halogen characteristic performance can reach the requirement of table 6 code name W among the GB/T19666-2005 " fire-retardant and fire-resistant wire and cable general rule ".
4, the low cigarette characteristic performance of cable can reach the requirement of table 7 code name D among the GB/T19666-2005 " fire-retardant and fire-resistant wire and cable general rule ".
Description of drawings
Fig. 1 is the structural representation of 2 heart yearn core group types of the present utility model
Fig. 2 is the structural representation of 4 heart yearn core group types of the present utility model
Embodiment:
On copper cover aluminum composite conductor 1, extrude crosslinked polyetylene insulated layer 2 and constitute single core insulation core, thoroughly do away with the edge core by two or three or four then and carry out the stranded line group of forming, and on the line group around pricking a branch colour band 3, the outer wrapped one deck polyester belt 4 of each twisted wire group, polyester belt 4 outer wrapped one deck screens 5, the line group of some band screens is twisted into cable core, fill with dustless mineral wool rope 7 between each cable core, wrapped one deck inhibiting tape 6 outside cable core, wrapped total screen 8 on fire-retardant belt, and then on wrapped total screen 8, extrude low-smoke and halogen-free flame retardant polyolefin jacket layer 9.
Claims (5)
1, composite conductor environment friendly flame-retardant digital signal cable, comprise single core insulation core, by the stranded line group of some single core insulation cores, by some line groups stranded cable core, filling, it is characterized in that single core insulation core is made of the insulating barrier of composite conductor and its outsourcing, by the outer wrapped one deck polyester belt of the stranded line group of some single core insulation cores, polyester belt is surrounded with screen outward, by the outer fire-retardant belt of wrapped one deck of the stranded cable core of some line groups, on fire-retardant belt, be surrounded with total screen, be extruded with the low-smoke and halogen-free flame retardant polyolefin jacket layer on total screen.
2, composite conductor environmental-protection flame-retardant digital signal cable according to claim 1, the composite conductor that it is characterized in that single core insulation core is a copper cover aluminum composite construction conductor, insulating barrier is a crosslinked polyethylene.
3, composite conductor environment friendly flame-retardant digital signal cable according to claim 1 is characterized in that on each line group, around bundle a branch colour band is arranged in the polyester belt.
4, composite conductor environment friendly flame-retardant digital signal cable according to claim 1 is characterized in that the screen of each line group and total screen of cable core are aluminium-plastic tape or copper strips or copper wire braid or copper cover aluminum braid.
5, composite conductor environment friendly flame-retardant digital signal cable according to claim 1 is characterized in that the outer fire-retardant belt of cable core is a glass fiber tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202375280U CN201348895Y (en) | 2008-12-17 | 2008-12-17 | Composite conductor environment-friendly flame-proof digital signal cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202375280U CN201348895Y (en) | 2008-12-17 | 2008-12-17 | Composite conductor environment-friendly flame-proof digital signal cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201348895Y true CN201348895Y (en) | 2009-11-18 |
Family
ID=41368363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202375280U Expired - Lifetime CN201348895Y (en) | 2008-12-17 | 2008-12-17 | Composite conductor environment-friendly flame-proof digital signal cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201348895Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102855991A (en) * | 2012-09-07 | 2013-01-02 | 江苏远大电缆有限公司 | Polyvinyl chloride insulation color separating cable |
| CN104167256A (en) * | 2014-09-03 | 2014-11-26 | 吴俊� | High-speed data transmission cable |
| CN106653204A (en) * | 2016-12-26 | 2017-05-10 | 张家港特恩驰电缆有限公司 | Flame retardant cable |
-
2008
- 2008-12-17 CN CNU2008202375280U patent/CN201348895Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102855991A (en) * | 2012-09-07 | 2013-01-02 | 江苏远大电缆有限公司 | Polyvinyl chloride insulation color separating cable |
| CN104167256A (en) * | 2014-09-03 | 2014-11-26 | 吴俊� | High-speed data transmission cable |
| CN106653204A (en) * | 2016-12-26 | 2017-05-10 | 张家港特恩驰电缆有限公司 | Flame retardant cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091118 |
|
| CX01 | Expiry of patent term |