CN104900317A - Dual-sheath fire-proof digital communication symmetric cable - Google Patents
Dual-sheath fire-proof digital communication symmetric cable Download PDFInfo
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- CN104900317A CN104900317A CN201510312658.0A CN201510312658A CN104900317A CN 104900317 A CN104900317 A CN 104900317A CN 201510312658 A CN201510312658 A CN 201510312658A CN 104900317 A CN104900317 A CN 104900317A
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- sheath
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- digital communication
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- insulation core
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Abstract
The invention relates to a cable, particularly to a dual-sheath fire-proof digital communication symmetric cable comprising insulating core wires a cross-shaped skeleton, an inner sheath, a mica tape and an outer sheath. The insulating core wires contain conductors and insulating layers coating the conductors. The eight insulating core wires are arranged; each two insulating core wires are twisted into one pair; and the four pairs of insulating core wires are twisted at different pitches. Each two of the four pairs of insulating core wires are separated by the cross-shaped skeleton made of a flame-retardant polyethylene material. The special silicone-rubber inner sheath extrudes the outsides of the insulating core wires; the mica tape wraps the inner sheath; and the low-smoke halogen-free outer sheath wraps the mica tape. The provided cable has the excellent fireproof performance, thereby effectively reducing the potential safety hazard caused by fire.
Description
Technical field
The present invention relates to a kind of cable, specifically a kind of two fire-resistant digital communication symmetrical cable of sheath.
Background technology
According to data, in the fire that China occurs, because the fire electrically caused accounts for the half of total fire number, because cable is aging or overload uses the fire caused to account for larger proportion in electrical fire, simultaneously because the toxic gas sent during fire shot-firing cable can cause mass casualties, and hinder fire fighter to put out a fire, it is very important for therefore correctly designing fire-resisting cable.
Communication cable forms cable core by the wire of many mutual insulatings or conductor, and outside has the communication line of sealing sheath.What have is also equipped with outer jacket outside sheath.There is built on stilts, the multiple system of laying such as direct-burried, pipeline and the bottom.Symmetry, coaxial and composite cable is divided into by structure; Field operations are divided into and forever for cable (underground, submarine cable) by function.
But in signals transmission, the fire resistance of the communication cable of this structure is poor, when running into high temperature environmental activity on fire, huge potential safety hazard can be caused.
Summary of the invention
In order to make up the deficiencies in the prior art, the invention provides two sheath digital communication symmetrical cables that a kind of fire resistance is strong, effectively can alleviate the potential safety hazard that fire brings.
The technical solution adopted for the present invention to solve the technical problems is: a kind of two fire-resistant digital communication symmetrical cable of sheath, comprise insulation core wire, crossing skeleton, inner sheath, mica tape and oversheath, described insulation core wire comprises conductor and is wrapped in the insulating barrier outside conductor, the copper free wire that described conductor is 0.51mm-0.57mm by diameter is made, and described insulating barrier is flame-retardant crosslinking polyethylene insulated layer.
Further, described insulation core wire has eight, and every two bar insulation heart yearns move back the synthesis a pair that kinks, and four pairs of different pitches of insulation core wire move back the conjunction that kinks.
Further, separated by crossing skeleton between two between four pairs of described insulation core wires.
Further, described crossing skeleton is flame-proof polyethylene material.
Further, four pairs of described insulation core wires are that right-angled intersection is arranged along crossing skeleton, and the arrangement position of four pairs of insulation core wires and crossing skeleton rotate the arrangement location overlap after 45 degree.
Further, inner sheath is extruded with outside described insulation core wire.
Further, described inner sheath is special silicone rubber inner sheath.
Further, mica tape is surrounded with outside described inner sheath.
Further, low smoke and zero halogen oversheath is surrounded with outside described mica tape.
Further, the material of described low smoke and zero halogen oversheath is ceramic polyolefin.
Cable provided by the invention, insulating barrier is made up of flame-retardant crosslinking polyethylene, have the crossing skeleton of flame-proof polyethylene material between each insulation core wire, and cable has special silicone rubber inner sheath and the double-deck fire-resistance protection of low smoke and zero halogen oversheath, these all make the present invention have very strong fire resistance.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the present invention is further described.
Fig. 1 is structural representation of the present invention.
In figure: insulation core wire 1, crossing skeleton 2, inner sheath 3, mica tape 4, oversheath 5, conductor 11, insulating barrier 12.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
As shown in Figure 1, the two fire-resistant digital communication symmetrical cable of sheath of one of the present invention, comprise insulation core wire 1, crossing skeleton 2, inner sheath 3, mica tape 4 and oversheath 5, the insulating barrier 12 that described insulation core wire 1 comprises conductor 11 and is wrapped in outside conductor 11, the copper free wire that described conductor 11 is 0.51mm-0.57mm by diameter is made, and described insulating barrier 12 is flame-retardant crosslinking polyethylene insulated layer 12.
Further, described insulation core wire 1 has eight, and every two bar insulation heart yearns 1 move back the synthesis a pair that kinks, and four pairs of different pitches of insulation core wire 1 move back the conjunction that kinks.
Further, separated by crossing skeleton 2 between two between four pairs of described insulation core wires 1.
Further, described crossing skeleton 2 is flame-proof polyethylene material.
Further, four pairs of described insulation core wires 1 are arranged along crossing skeleton 2 in right-angled intersection, and the arrangement position of four pairs of insulation core wires 1 and crossing skeleton 2 rotate the arrangement location overlap after 45 degree.
Further, inner sheath 3 is extruded with outside described insulation core wire 1.
Further, described inner sheath 3 is special silicone rubber inner sheath 3.
Further, mica tape 4 is surrounded with outside described inner sheath 3.
Further, low smoke and zero halogen oversheath 5 is surrounded with outside described mica tape 4.
Further, the material of described low smoke and zero halogen oversheath 5 is ceramic polyolefin.
Cable provided by the invention, insulating barrier 12 is made up of flame-retardant crosslinking polyethylene, the crossing skeleton 2 of flame-proof polyethylene material is had between each insulation core wire 1, and cable has the double-deck fire-resistance protection of special silicone rubber inner sheath 3 and low smoke and zero halogen oversheath 5, these all make the present invention have very strong fire resistance.
More than show and describe general principle of the present invention, principal character and advantage.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; description in above-described embodiment and specification principle of the present invention is just described; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (10)
1. two fire-resistant digital communication symmetrical cable of sheath, it is characterized in that: comprise insulation core wire (1), crossing skeleton (2), inner sheath (3), mica tape (4) and oversheath (5), described insulation core wire (1) comprises conductor (11) and is wrapped in conductor (11) insulating barrier outward (12), the copper free wire that described conductor (11) is 0.51mm-0.57mm by diameter is made, and described insulating barrier (12) is flame-retardant crosslinking polyethylene insulated layer (12).
2. the two fire-resistant digital communication symmetrical cable of sheath of one according to claim 1, it is characterized in that: described insulation core wire (1) has eight, every two bar insulation heart yearns (1) move back the synthesis a pair that kinks, and four pairs of insulation core wires (1) move back by different pitches the conjunction that kinks.
3. the two fire-resistant digital communication symmetrical cable of sheath of one according to claim 1, be is characterized in that: separated by crossing skeleton (2) between two between four pairs of described insulation core wires (1).
4. the two fire-resistant digital communication symmetrical cable of sheath of one according to claim 1, is characterized in that: described crossing skeleton (2) is flame-proof polyethylene material.
5. the two fire-resistant digital communication symmetrical cable of sheath of one according to claim 1, it is characterized in that: four pairs of described insulation core wires (1) are arranged along crossing skeleton (2) in right-angled intersection, and the arrangement position of four pairs of insulation core wires (1) and crossing skeleton (2) rotate the arrangement location overlap after 45 degree.
6. the two fire-resistant digital communication symmetrical cable of sheath of one according to claim 1, is characterized in that: be extruded with inner sheath (3) outside described insulation core wire (1).
7. the two fire-resistant digital communication symmetrical cable of sheath of one according to claim 1, is characterized in that: described inner sheath (3) is special silicone rubber inner sheath (3).
8. the two fire-resistant digital communication symmetrical cable of sheath of one according to claim 1, is characterized in that: be surrounded with mica tape (4) outside described inner sheath (3).
9. the two fire-resistant digital communication symmetrical cable of sheath of one according to claim 1, is characterized in that: be surrounded with low smoke and zero halogen oversheath (5) outside described mica tape (4).
10. the two fire-resistant digital communication symmetrical cable of sheath of one according to claim 1, is characterized in that: the material of described low smoke and zero halogen oversheath (5) is ceramic polyolefin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510312658.0A CN104900317A (en) | 2015-06-08 | 2015-06-08 | Dual-sheath fire-proof digital communication symmetric cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510312658.0A CN104900317A (en) | 2015-06-08 | 2015-06-08 | Dual-sheath fire-proof digital communication symmetric cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104900317A true CN104900317A (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510312658.0A Pending CN104900317A (en) | 2015-06-08 | 2015-06-08 | Dual-sheath fire-proof digital communication symmetric cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN104900317A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931746A (en) * | 2016-06-24 | 2016-09-07 | 安徽宜德电子有限公司 | Novel anti-interference data shielding symmetrical cable |
| CN105931735A (en) * | 2016-06-24 | 2016-09-07 | 安徽宜德电子有限公司 | Special polyolefin insulating sheath flame resistant cable |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200983289Y (en) * | 2006-12-08 | 2007-11-28 | 昆山火凤凰线缆有限公司 | Photoelectrical wide fireproof cable of mine insulation metal cover |
| CN201340759Y (en) * | 2008-12-30 | 2009-11-04 | 上海端翔机电有限公司 | Category six digital communication local area network cable for warship |
| CN202736583U (en) * | 2012-08-29 | 2013-02-13 | 安徽新科电缆集团股份有限公司 | Category-6 unshielded digital communication cable |
| CN103928185A (en) * | 2014-04-26 | 2014-07-16 | 芜湖航天特种电缆厂 | Communication cable for oil and gas drilling platform |
| CN203882689U (en) * | 2014-03-22 | 2014-10-15 | 安徽旺达铜业发展有限公司 | Flame retardant control cable having framework lining |
| CN204130258U (en) * | 2014-10-28 | 2015-01-28 | 上海端翔机电有限公司 | Naval vessel low-smoke non-halogen flame-retardant surpasses six class digital communication local area network cables |
-
2015
- 2015-06-08 CN CN201510312658.0A patent/CN104900317A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200983289Y (en) * | 2006-12-08 | 2007-11-28 | 昆山火凤凰线缆有限公司 | Photoelectrical wide fireproof cable of mine insulation metal cover |
| CN201340759Y (en) * | 2008-12-30 | 2009-11-04 | 上海端翔机电有限公司 | Category six digital communication local area network cable for warship |
| CN202736583U (en) * | 2012-08-29 | 2013-02-13 | 安徽新科电缆集团股份有限公司 | Category-6 unshielded digital communication cable |
| CN203882689U (en) * | 2014-03-22 | 2014-10-15 | 安徽旺达铜业发展有限公司 | Flame retardant control cable having framework lining |
| CN103928185A (en) * | 2014-04-26 | 2014-07-16 | 芜湖航天特种电缆厂 | Communication cable for oil and gas drilling platform |
| CN204130258U (en) * | 2014-10-28 | 2015-01-28 | 上海端翔机电有限公司 | Naval vessel low-smoke non-halogen flame-retardant surpasses six class digital communication local area network cables |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931746A (en) * | 2016-06-24 | 2016-09-07 | 安徽宜德电子有限公司 | Novel anti-interference data shielding symmetrical cable |
| CN105931735A (en) * | 2016-06-24 | 2016-09-07 | 安徽宜德电子有限公司 | Special polyolefin insulating sheath flame resistant cable |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150909 |
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| RJ01 | Rejection of invention patent application after publication |