CN103236299A - Bending-resistant buoyant double-shielded coaxial cable - Google Patents
Bending-resistant buoyant double-shielded coaxial cable Download PDFInfo
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- CN103236299A CN103236299A CN2013100021380A CN201310002138A CN103236299A CN 103236299 A CN103236299 A CN 103236299A CN 2013100021380 A CN2013100021380 A CN 2013100021380A CN 201310002138 A CN201310002138 A CN 201310002138A CN 103236299 A CN103236299 A CN 103236299A
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- bending
- outside
- coaxial cable
- outward
- strength member
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Abstract
The invention discloses a bending-resistant buoyant double-shielded coaxial cable which aims to solve the problem of low bending fatigue resistance limit of an existing marine buoyant coaxial cable. The bending-resistant buoyant double-shielded coaxial cable is characterized in that an inner conductor is arranged in the center of the cable, an insulating layer is arranged on the outside of the inner conductor, a first outer conductor is arranged on the outside of the insulating layer, an inner sheath is arranged on the outside of the first outer conductor, a second outer conductor is arranged on the outside of the inner sheath, an outer sheath is arranged on the outside of the second outer conductor, a strength member is arranged on the outside of the outer sheath, an outer skin is arranged on the outside of the strength member, and a foamed skin is arranged on the outside of the outer skin. The strength member is made of aramid fibers. The bending-resistant buoyant double-shielded coaxial cable has the advantages that owing to the strength member made of the aramid fibers, the bending strength of the foamed skin and the bending fatigue limit of the bending-resistant buoyant double-shielded coaxial cable are improved.
Description
Technical field
The invention belongs to field of cables, be specially a kind of marine with the floating double shielded coaxial cable of bending resistance.
Background technology
For floating screened coaxial cable, along with the fluctuation up and down of seawater, the bending strength that cable bears and fatigue limit should be higher than common shielded type cable far away.Present floating shielded type cable generally comprises inner wire, insulating barrier, outer conductor and plays the foaming body of floating effect, and the character of foaming body itself has brought bending resistance bad, can not adapt to the frequent bending that seawater fluctuates and brings, thereby cause fractureing of cable conductor.
Summary of the invention
The object of the present invention is to provide a kind of marine with the floating double shielded coaxial cable of bending resistance, the bending resistance that the existing floating shielded type cable of solution at sea uses is bad, can not adapt to the frequent bending that seawater fluctuates and brings, thereby cause problems such as fractureing of cable conductor.
Technical scheme of the present invention is:
The floating double shielded coaxial cable of a kind of bending resistance, be inner wire at the center of cable, described inner wire is outward insulating barrier, described insulating barrier is outward first outer conductor, and described first outer conductor is outward inner sheath, and described inner sheath is outward second outer conductor, described second outer conductor is outward oversheath, described oversheath is outward strength member, and described strength member is outer skinning outward, and described outer skinning is the foaming skin outward.
Described strength member material is aramid fiber.
The invention has the beneficial effects as follows:
The present invention has increased strength member, and described strength member material adopts aramid fiber (PPTA Aramid fiber).Utilize strength member to improve the overall bending strength of foaming skin and cable, improved bending fatigue limit.According to test, cable performance of the present invention is as follows:
1. cable intensity
1.1 stretch breaking strength 〉=9kN.
1.2 shear strength: oversheath, aramid fiber strength member, outer skinning, foaming layer between any two＞1000N/m; Between other object 〉=150N/30cm.
2. bending property: bending radius is not more than 165mm.
3. density:＜850kg/m3, after the watertight test, density is no more than 900kg/m3.
4 watertightnesses: kept 2 hours under 4.4MPa hydraulic pressure, cable is laterally water-tight, and aramid layers is vertically water-tight with interior (not containing aramid layers).
5. cable properties impedance 50 ± 2.5 Ω (f=10MHz).
6. attenuation constant＜0.06dB/m(f=30MHz).
7. internal and external conductor series resistance＜50.0 Ω/km.
Core and the shielding between insulation resistance＞10000M Ω km; Between the two-layer outer conductor＞300M Ω km.
9. proof voltage intensity: should satisfy exchanging 50Hz between conductor and the shielding, 1kV, 1min does not puncture.
10 isolations: when first outer conductor as publicly the time, the isolation between heart yearn and second conductor is satisfied:
During 10kHz≤f≤120kHz, isolation 〉=45dB;
During 2MHz≤f≤30MHz, isolation 〉=35dB.
11. environmental suitability: working temperature :-35 ℃-+65 ℃; Storage temperature :-50 ℃-+70 ℃.
Description of drawings
Figure l is structure chart of the present invention;
Among the figure, 1-inner wire, 2-insulating barrier, 3-the first outer conductor, 4-inner sheath, 5-the second outer conductor, 6-oversheath, 7-aramid fiber strength member, 8-outer skinning, 9-foaming skin.
Embodiment
As shown in Figure 1, the floating single screened coaxial cable of bending resistance of the present invention, be inner wire 1 at the center of cable, described inner wire is outward insulating barrier 2, and described insulating barrier 2 is outer to be first outer conductor 3, be inner sheath 4 outside described first outer conductor 3, being second outer conductor 5 outside the described inner sheath 4, is oversheath 6 outside described second outer conductor 5, is strength member 7 outside the described oversheath 6, be outer skinning 8 outside the described strength member 7, be foaming skin 9 outside the described outer skinning 8.
Described strength member 7 materials are aramid fiber.
Claims (2)
1. floating double shielded coaxial cable of bending resistance, it is characterized in that: be inner wire at the center of cable, described inner wire is outward insulating barrier, described insulating barrier is outward first outer conductor, and described first outer conductor is outward inner sheath, and described inner sheath is outward second outer conductor, described second outer conductor is outward oversheath, described oversheath is outward strength member, and described strength member is outer skinning outward, and described outer skinning is the foaming skin outward.
2. cable according to claim 1, it is characterized in that: described strength member material is aramid fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100021380A CN103236299A (en) | 2013-01-05 | 2013-01-05 | Bending-resistant buoyant double-shielded coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100021380A CN103236299A (en) | 2013-01-05 | 2013-01-05 | Bending-resistant buoyant double-shielded coaxial cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103236299A true CN103236299A (en) | 2013-08-07 |
Family
ID=48884333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100021380A Pending CN103236299A (en) | 2013-01-05 | 2013-01-05 | Bending-resistant buoyant double-shielded coaxial cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103236299A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030037956A1 (en) * | 2001-08-22 | 2003-02-27 | Baldock George M. | Cable |
| CN201036081Y (en) * | 2007-03-26 | 2008-03-12 | 江西省光电线缆工程技术研究中心 | composite type floating coaxial cable |
| CN201219040Y (en) * | 2008-06-30 | 2009-04-08 | 中国电子科技集团公司第二十三研究所 | High-strength four-core stranded buoyant cable |
| CN203055505U (en) * | 2013-01-05 | 2013-07-10 | 辽宁金环电缆有限公司 | Bending-resistant floating double-shielding coaxial cable |
-
2013
- 2013-01-05 CN CN2013100021380A patent/CN103236299A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030037956A1 (en) * | 2001-08-22 | 2003-02-27 | Baldock George M. | Cable |
| CN201036081Y (en) * | 2007-03-26 | 2008-03-12 | 江西省光电线缆工程技术研究中心 | composite type floating coaxial cable |
| CN201219040Y (en) * | 2008-06-30 | 2009-04-08 | 中国电子科技集团公司第二十三研究所 | High-strength four-core stranded buoyant cable |
| CN203055505U (en) * | 2013-01-05 | 2013-07-10 | 辽宁金环电缆有限公司 | Bending-resistant floating double-shielding coaxial cable |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130807 |