CN1245902A - Layer-twisted semi-dry type cable-core optical cable - Google Patents
Layer-twisted semi-dry type cable-core optical cable Download PDFInfo
- Publication number
- CN1245902A CN1245902A CN 99117628 CN99117628A CN1245902A CN 1245902 A CN1245902 A CN 1245902A CN 99117628 CN99117628 CN 99117628 CN 99117628 A CN99117628 A CN 99117628A CN 1245902 A CN1245902 A CN 1245902A
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- CN
- China
- Prior art keywords
- cable
- dry type
- optical
- cable core
- core
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 230000003287 optical effect Effects 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000013307 optical fiber Substances 0.000 claims abstract description 17
- 230000000903 blocking effect Effects 0.000 claims description 14
- 239000002537 cosmetic Substances 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000002674 ointment Substances 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Insulated Conductors (AREA)
Abstract
The semi-dry cable core optical cable includes cable core and external jacket, and the cable core contains central reinforced piece and optical fibre covered with jacket, and between central reinforced piece surface and optical fibre jacket the dry water-resistant yarn is set instead of unguent composite, if the water or moisture is come into the optical cable, the dry water-resistant yarn is expanded by absorbing water so as to block gap being in cable core and meet the requirements for stopping water. Because the cable core has no unguent composite, so the cable weight is light, it is favourable for laying construction, and when said optical cable is stripped, it has no unguent to flow out, does not result in pollution, and can ensure cable transmission efficiency.
Description
The invention belongs to a kind of optical transmission line optical cable of fiber optic communication network.
Existing layer-stranding cable, for anti-sealing with moisture enters optical cable and along the optical cable longitudinal propagation, general at the central reinforce member of optical cable core and the gap factice for filling compound between the loose tube fiber (or tight tube fiber), this optical cable weight increases, is unfavorable for laying, and when optical cable baring continues, jelly compound outflow meeting in the cable core pollutes operationlocation, if ointment splashes into the fibre-optical splice point, can increase the additional attenuation of optical fiber contact, reduce transfer efficiency.
The purpose of this invention is to provide a kind of novel optical cable with half dry type cable core, this optical cable factice for filling compound not in the gap of cable core can overcome above-mentioned deficiency, but can reach waterproof and dampproof purpose equally.
The present invention is a kind of layer-twisted semi-dry type cable-core optical cable, and it comprises cable core (8) and outer jacket (6), contains central reinforce member (5) in the cable core (8) and is surrounded by the optical fiber (1) of optical fiber jacket (3) outward, lays dry type water blocking yarn (2) in central reinforce member (5) appearance.
The dry type water blocking yarn (2) that the present invention lays in central reinforce member (5) appearance can also can center on the parallel placement of central reinforce member (5) surface longitudinal around pricking on central reinforce member (5) surface.
In order to strengthen the waterproof and dampproof performance of optical cable, the gap between optical fiber jacket (3) also can be provided with dry type water blocking yarn (7) by parallel longitudinal.
Optical fiber among the present invention (1) can be loose tube fiber, also can be tight tube fiber.
Among the present invention in cable core (8) employed dry type water blocking yarn (2), (7) be to add an amount of adhesive coated by cross linked polyacrylate cosmetics end to make in yam surface.
The present invention is owing to be provided with dry type water blocking yarn (2), (7) of being made by cross linked polyacrylate cosmetics end in cable core (8), in case have water or moisture to enter optical cable, dry type water blocking yarn (2), (7) just absorb water and the own vol expansion immediately, form on " paste stopper ", gap in the cable core (8) is blocked, water or the vertical seepage flow of moisture in the blocking-up cable core (8) make optical cable satisfy the requirement that blocks water of regulation, do not need again at the gap of cable core (8) factice for filling compound.So just alleviated optical cable weight, be convenient to lay, and when optical cable baring continues, do not had ointment to flow out, can not pollute, also can guarantee the cleaning of fibre-optical splice point, the transfer efficiency of optical cable is protected operationlocation.
Fig. 1 is a cross sectional representation of the present invention.(optical fiber in the cable core is example with the loose tube fiber)
1 is optical fiber among the figure, the 2 dry type water blocking yarns that lay for central reinforce member (5) appearance, and 3 is optical fiber jacket (loose sleeve pipe), 4 is the filled composite in the optical fiber jacket, and 5 is central reinforce member, and 6 is oversheath, 7 is the dry type water blocking yarn that the gap between optical fiber jacket is provided with, and 8 is optical cable core.
Implement key of the present invention and be laying of central reinforce member (5) appearance dry type water blocking yarn (2), can lay dry type water blocking yarn (2) around bundle and parallel longitudinal on central reinforce member (5) surface, gap between optical fiber jacket (3) can also be provided with dry type water blocking yarn (7) by parallel longitudinal, factice for filling compound no longer in the cable core (8).The setting of the interior remaining part of cable core (8) is the same with the existing layer stranded cables with outer jacket (6).If the not enough rounding of cable core (8) can also increase the gasket for packing made from the circular solids plastic ties in cable core (8), its external diameter is identical with the optical fiber jacket external diameter, so that cable core (8) keeps rounding.
Claims (3)
1, a kind of layer-twisted semi-dry type cable-core optical cable comprises cable core and outer jacket, contains central reinforce member in the cable core and is surrounded by the optical fiber of optical fiber jacket outward, it is characterized in that the central reinforce member appearance lays the dry type water blocking yarn.
2, by the described layer-twisted semi-dry type cable-core optical cable of claim 1, it is characterized in that the gap parallel longitudinal between the optical fiber jacket is provided with the dry type water blocking yarn.
3, by claim, 1,2 described layer-twisted semi-dry type cable-core optical cables, its feature set dry type water blocking yarn in cable core are to add an amount of adhesive coated by cross linked polyacrylate cosmetics end to make in yam surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99117628 CN1245902A (en) | 1999-08-06 | 1999-08-06 | Layer-twisted semi-dry type cable-core optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99117628 CN1245902A (en) | 1999-08-06 | 1999-08-06 | Layer-twisted semi-dry type cable-core optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1245902A true CN1245902A (en) | 2000-03-01 |
Family
ID=5280178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99117628 Pending CN1245902A (en) | 1999-08-06 | 1999-08-06 | Layer-twisted semi-dry type cable-core optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1245902A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392461C (en) * | 2003-10-16 | 2008-06-04 | 上海电缆研究所 | Expandable water blocking tape for optical cable |
| CN101339280B (en) * | 2002-12-19 | 2010-12-01 | 康宁光缆系统有限公司 | Light pipe assembly with dry insert and method of manufacture |
| US9971101B2 (en) | 2005-07-29 | 2018-05-15 | Corning Optical Communications LLC | Fiber optic cable assembly |
| WO2018219366A3 (en) * | 2018-06-27 | 2019-04-25 | 罗森伯格技术（昆山）有限公司 | Outdoor armored fiber optic cable |
-
1999
- 1999-08-06 CN CN 99117628 patent/CN1245902A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339280B (en) * | 2002-12-19 | 2010-12-01 | 康宁光缆系统有限公司 | Light pipe assembly with dry insert and method of manufacture |
| CN100392461C (en) * | 2003-10-16 | 2008-06-04 | 上海电缆研究所 | Expandable water blocking tape for optical cable |
| US9971101B2 (en) | 2005-07-29 | 2018-05-15 | Corning Optical Communications LLC | Fiber optic cable assembly |
| WO2018219366A3 (en) * | 2018-06-27 | 2019-04-25 | 罗森伯格技术（昆山）有限公司 | Outdoor armored fiber optic cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Applicant after: Jiangsu Hengtong Photoelectric Co., Ltd. Applicant before: Wujiang Miaodu Optical Cable Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: WUJIANG MIAODU OPTICAL CABLE CO., LTD. TO: JIANGSU HENGTONG PHOTOELECTRICCO., LTD. |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |