CN202771070U - Central core tube-type optical fiber - Google Patents
Central core tube-type optical fiber Download PDFInfo
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- CN202771070U CN202771070U CN 201220420824 CN201220420824U CN202771070U CN 202771070 U CN202771070 U CN 202771070U CN 201220420824 CN201220420824 CN 201220420824 CN 201220420824 U CN201220420824 U CN 201220420824U CN 202771070 U CN202771070 U CN 202771070U
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- optical cable
- reinforcement
- central
- tube type
- fiber optic
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Abstract
The utility model relates to the technical field of a communication optical cable, and especially relates to a central core tube-type optical fiber. The central core tube-type optical fiber comprises optical cable units, a water-resisting tape, a steel plastic composite tape and an oversheath, wherein the water-resisting tape, the steel plastic composite tape and the oversheath are successively wrapped outside the optical cable units. Each optical cable unit includes fibers. First reinforced members are also wrapped by the water-resisting tape. The first reinforced members belong to reinforced members equipped with cushions outside. The first reinforced members equipped with the cushions outside help to effectively prevent and resist damages of external force such as bumping and stretching upon the optical cable, thereby enhancing stretch resistance and torsion resistance of the central core tube-type optical fiber.
Description
Technical field
The utility model relates to the communications optical cable technical field, relates in particular to central-beam tube type fiber optic cable.
Background technology
At present the primary structure of central-beam tube type fiber optic cable has GYXTW(central-tube type optical fiber optical cable) and the GYDXTW(central tube type fiber ribbon cable) two kinds, version is: optical fiber (band)+fine cream+loose sleeve pipe+
Waterstop+composite steel-plastic belt+reinforcement+oversheath.Process route is: optical fiber (band) is painted-〉 extrude loose sleeve pipe-〉 extrude oversheath.
There is following shortcoming in existing central-beam tube type fiber optic cable:
(1) optical fiber (band) mainly relies on common reinforcement and comes the stretching of external force resistance and the damage such as reverse, and a little less than the common reinforcement stretch-proof, anti-torsion ability;
(2) only be provided with an optical cable unit in the oversheath, optical cable unit comprises optical fiber or fibre ribbon, and its density of optic fibre is low.
Summary of the invention
The purpose of this utility model is to overcome shortcoming and defect of the prior art, and a kind of stretch-proof, central-beam tube type fiber optic cable that anti-torsion ability is strong are provided.
To achieve these goals, the utility model adopts following technical scheme: central-beam tube type fiber optic cable, comprise optical cable unit and coat successively waterstop, composite steel-plastic belt and the oversheath of optical cable unit, described optical cable unit comprises optical fiber, described waterstop also coats the first reinforcement, and described the first reinforcement is for being provided with the reinforcement of bed course outward.
Wherein, the quantity of described the first reinforcement is 1.
Wherein, described optical cable unit also comprises the loose sleeve pipe of clad optical fiber.
Wherein, the inside of described loose sleeve pipe is filled with fine cream.
Wherein, the quantity of described optical cable unit is 2.
Wherein, be provided with water blocking yarn in the gap that described optical cable unit and the first reinforcement form.
Wherein, also comprise the second reinforcement of being located at oversheath.
Wherein, the quantity of described the second reinforcement is 2, and described 2 the second reinforcements are symmetricly set in oversheath centered by the axis of oversheath.
Wherein, at least 2 described optical fiber are fixed together and form 1 fibre ribbon.
Wherein, 4 described optical fiber are fixed together and form 1 fibre ribbon, and described optical cable unit comprises 3 fibre ribbons.
The beneficial effects of the utility model are:
(1) waterstop coats the first reinforcement, and the first reinforcement is for being provided with the reinforcement of bed course outward, and the stranded formation cable core of the first reinforcement and optical cable unit has promoted stretch-proof, the anti-torsion ability of central-beam tube type fiber optic cable;
(2) quantity of optical cable unit is 2, only comprises an optical cable unit with an optical cable of prior art and compares, and density of optic fibre is higher;
(3) optical cable unit comprises loose sleeve pipe, so that optical cable unit is easy to branch;
(4) central-beam tube type fiber optic cable of the present utility model is provided with waterstop, also be provided with water blocking yarn between optical cable unit and the first reinforcement, waterstop coats optical cable unit and water blocking yarn, and the double water-resistance structure that waterstop and water blocking yarn form is so that the block-water performance of optical cable is good.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one.
Fig. 2 is the structural representation of the utility model embodiment two.
Fig. 1 and Fig. 2 comprise:
Optical cable unit-1; Optical fiber-10; Pine sleeve pipe-11; Fine cream-12; Fibre ribbon-13; Waterstop-2; Composite steel-plastic belt-3; Oversheath-4; The first reinforcement-5; Water blocking yarn-6; The second reinforcement-7.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail.
Embodiment one:
With reference to figure 1, central-beam tube type fiber optic cable of the present utility model, comprise optical cable unit 1 and coat successively the waterstop 2 of optical cable unit 1, composite steel-plastic belt 3 and oversheath 4, optical cable unit 1 comprises optical fiber 10, waterstop 2 also coats the first reinforcement 5, and described the first reinforcement 5 is for being provided with the reinforcement of bed course outward.The reinforcement that is provided with bed course is outward resisted bump and the stretching of external force on the one hand, prevent the damage that external force is brought, promote stretch-proof, the anti-torsion ability of central-beam tube type fiber optic cable, and then prolonged the serviceable life of optical cable, the drawdown deformation of optical cable components when having weakened on the other hand low temperature.The quantity of the first reinforcement 5 is 1 in the present embodiment, and the quantity of the first reinforcement 5 also can be designed to more than 2 according to the actual requirements.
The quantity of optical cable unit 1 is 2 in the present embodiment.Also can design according to demand the central-beam tube type fiber optic cable that comprises 3 above optical cable units 1.Only have an optical cable unit 1 to compare with an optical cable of prior art, optical fiber 10 density are higher.2 optical cable units 1 and the stranded composition of the first reinforcement cable core of the present utility model.
Be provided with water blocking yarn 6 in the gap that described optical cable unit 1 and the first reinforcement 5 form.Water blocking yarn 6 also can be located at the inwall of waterstop 2 or be filled in other positions of the inside of waterstop 2.Water blocking yarn 6 is met water and can be expanded immediately, intakes thereby the waterstop of central-beam tube type fiber optic cable 2 has breakage or when making moist, and expands immediately and blocks breach thereby water blocking yarn 6 can absorb moisture, has protected optical fiber 10 not to be subjected to the invasion and attack of water or moisture.Waterstop 2 coats optical cable unit and water blocking yarn, and the double water-resistance structure that waterstop 2 and water blocking yarn 6 form is so that the block-water performance of optical cable is good.
Also comprise the second reinforcement 7 of being located at oversheath 4.The quantity of the second reinforcement 7 is 2, and described 2 the second reinforcements 7 are symmetricly set in oversheath 4 centered by the axis of oversheath 4.The second reinforcement 7 can be metal reinforcement, such as the steel wire reinforcement, also can be non-metal reinforcement member, such as fibre reinforced plastics stirrup (being FRP), aramid fiber reinforcing optical cable reinforced core (being KFRP) or reinforced plastics rod.The utility model has further been strengthened stretch-proof of the present utility model, anti-torsion ability because of the dual reinforcement structure of the first reinforcement 5 and the second reinforcement 7.
Embodiment two:
With reference to figure 2, at least 2 described optical fiber 10 are fixed together and form 1 fibre ribbon 13.In the present embodiment, 4 described optical fiber 10 are fixed together and form 1 fibre ribbon 13, and described optical cable unit 1 comprises 3 fibre ribbons 13.Form together fibre ribbon 13 with optical fiber 10 is fixing, can increase transmission capacity, improve data transmission capabilities.Other structure of the present embodiment is identical with embodiment one, no longer gives unnecessary details at this.
Oversheath 4 of the present utility model is the low-smoke non-halogen flame-retardant oversheath.As entering the house type leading in cable, need employing nontoxic to human body, the material of environmentally safe, the oversheath that adopts halogen-free low-smoke flame retardant material to make satisfies the user to entering the demand for security of house type leading in cable.
The utility model adopts GY(D) the XY(central tube optical fiber optical cable) structure, version is: optical fiber (band)+fine cream+loose sleeve pipe+first reinforcement+water blocking yarn+waterstop+composite steel-plastic belt+second reinforcement+oversheath.
Above content only is preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (10)
1. central-beam tube type fiber optic cable, comprise optical cable unit and coat successively waterstop, composite steel-plastic belt and the oversheath of optical cable unit, described optical cable unit comprises optical fiber, it is characterized in that: described waterstop also coats the first reinforcement, and described the first reinforcement is for being provided with the reinforcement of bed course outward.
2. central-beam tube type fiber optic cable according to claim 1, it is characterized in that: the quantity of described the first reinforcement is 1.
3. central-beam tube type fiber optic cable according to claim 1, it is characterized in that: described optical cable unit also comprises the loose sleeve pipe of clad optical fiber.
4. central-beam tube type fiber optic cable according to claim 3, it is characterized in that: the inside of described loose sleeve pipe is filled with fine cream.
5. central-beam tube type fiber optic cable according to claim 1, it is characterized in that: the quantity of described optical cable unit is 2.
6. central-beam tube type fiber optic cable according to claim 5 is characterized in that: be provided with water blocking yarn in the gap that described optical cable unit and the first reinforcement form.
7. central-beam tube type fiber optic cable according to claim 1 is characterized in that: also comprise the second reinforcement of being located at oversheath.
8. central-beam tube type fiber optic cable according to claim 7, it is characterized in that: the quantity of described the second reinforcement is 2, described 2 the second reinforcements are symmetricly set in oversheath centered by the axis of oversheath.
9. central-beam tube type fiber optic cable according to claim 1 is characterized in that: at least 2 described optical fiber are fixed together and form 1 fibre ribbon.
10. central-beam tube type fiber optic cable according to claim 9 is characterized in that: 4 described optical fiber are fixed together and form 1 fibre ribbon, and described optical cable unit comprises 3 fibre ribbons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220420824 CN202771070U (en) | 2012-08-23 | 2012-08-23 | Central core tube-type optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220420824 CN202771070U (en) | 2012-08-23 | 2012-08-23 | Central core tube-type optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202771070U true CN202771070U (en) | 2013-03-06 |
Family
ID=47777633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220420824 Expired - Fee Related CN202771070U (en) | 2012-08-23 | 2012-08-23 | Central core tube-type optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202771070U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558672A (en) * | 2013-11-15 | 2014-02-05 | 天津长飞鑫茂光缆有限公司 | Three-unit unidirectional spiral stranded layer stranded optical cable |
| CN105044866A (en) * | 2015-08-06 | 2015-11-11 | 江苏中天科技股份有限公司 | Light-duty full medium self-supporting type optical cable |
-
2012
- 2012-08-23 CN CN 201220420824 patent/CN202771070U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558672A (en) * | 2013-11-15 | 2014-02-05 | 天津长飞鑫茂光缆有限公司 | Three-unit unidirectional spiral stranded layer stranded optical cable |
| CN105044866A (en) * | 2015-08-06 | 2015-11-11 | 江苏中天科技股份有限公司 | Light-duty full medium self-supporting type optical cable |
| WO2017020369A1 (en) * | 2015-08-06 | 2017-02-09 | 江苏中天科技股份有限公司 | Lightweight all-dielectric self-supporting optical cable |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20210823 |