CN208818883U - Outdoor leading in cable - Google Patents
Outdoor leading in cable Download PDFInfo
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- CN208818883U CN208818883U CN201821719614.5U CN201821719614U CN208818883U CN 208818883 U CN208818883 U CN 208818883U CN 201821719614 U CN201821719614 U CN 201821719614U CN 208818883 U CN208818883 U CN 208818883U
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- cable
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- restrictive coating
- strengthening core
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Abstract
The utility model discloses a kind of outdoor leading in cables, the cross section of the optical cable is circle, it includes cable core, the inner restrictive coating being coated on the outside of the cable core and the external sheath layer being coated on the outside of inner restrictive coating, it is embedded with the nonmetallic strengthening core of the six roots of sensation first in the inner restrictive coating, the nonmetallic strengthening core of the six roots of sensation first is distributed in using the center of the cable core as on the concentric circles in the center of circle and each first nonmetallic strengthening core equalization central angle distribution；Synchronous insertion during forming inner restrictive coating of first nonmetallic strengthening core described in the six roots of sensation.The outdoor leading in cable of the utility model, the cable type structure of optimization design enables optical cable to meet a variety of laying requirements such as aerial, direct-burried, pipeline and outdoor introducing interior simultaneously, it is easy for construction, fiber cable laying duration and use cost can be greatly shortened after use, reduce the splicing point of outdoor introducing interior laying.
Description
Technical field
The utility model belongs to fiber optic cable communications technical field, and in particular to a kind of outdoor leading in cable for facilitating laying.
Background technique
Traditional optical cable has aerial, direct-burried and pipeline three types, outdoor aerial optical cable one according to system of laying classification
As based on 8-shaped band messenger wire self-support cable, round self-support cable；Outdoor direct burial optical cable is generally with metal armouring circular light
Based on cable；Yard piping optical cable is generally based on metal armouring or non-metallic optical fiber cables；Inside cable is generally with fixed type optical cable
It is main, it is desirable that the characteristics such as soft, fire-retardant.The optical cable of these structures is the current domestic cable configuration used on a large scale.
With the development of FTTH construction in recent years, the laying environment of FTTH construction is complex, does not require nothing more than networking flexibility
It is convenient, low in cost, and require site operation is convenient, reduces splicing point etc..Current three big mainstreams described above are registered one's residence light
The paving mode of cable structure cannot fully meet laying demand, if encountering special construction site, for example, needing to pass through
Pipeline, the aerial construction site registered one's residence, current cable type structure need to meet outdoor laying requirement using two kinds of optical cable combinations
Cable type requires the combination of cable type with indoor laying is met, and needs to increase splicing point during outdoor introducing is indoor, can undoubtedly be applied
Work brings inconvenience.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of outdoor leading in cable, the cable type structure of optimization design makes
A variety of layings requirements such as aerial, direct-burried, pipeline and outdoor introducing interior can be met simultaneously by obtaining optical cable, easy for construction, after use
Fiber cable laying duration and use cost can be greatly shortened, reduce the splicing point of outdoor introducing interior laying.
In order to solve the above-mentioned technical problem, the utility model provides a kind of outdoor leading in cable, the optical cable it is transversal
Face is circle comprising cable core, the inner restrictive coating being coated on the outside of the cable core and the oversheath being coated on the outside of inner restrictive coating
Layer, is embedded with the nonmetallic strengthening core of the six roots of sensation first in the inner restrictive coating, the nonmetallic strengthening core of the six roots of sensation first be distributed in
The center of the cable core is on the concentric circles in the center of circle and each first nonmetallic strengthening core equalization central angle is distributed；Six roots of sensation institute
State synchronous insertion during forming inner restrictive coating of the first nonmetallic strengthening core.
In one preferred embodiment of the utility model, further comprise be embedded in the external sheath layer second it is nonmetallic plus
Qiang Xin, the second nonmetallic strengthening core synchronous insertion during forming external sheath layer；Wherein, described first it is nonmetallic plus
Core diameter of the core diameter of strong core less than the second nonmetallic strengthening core.
It further comprise that the described first nonmetallic strengthening core and second are nonmetallic in one preferred embodiment of the utility model
The direction that strengthening core is embedded in respective restrictive coating is identical.
It further comprise that the described first nonmetallic strengthening core or/and second are non-in one preferred embodiment of the utility model
Metallic strength member is FRP strengthening core.
It further comprise between the inner restrictive coating and external sheath layer equipped with non-in one preferred embodiment of the utility model
Metal protection layer, the nonmetallic protective layer are coated on the outside of inner restrictive coating, and the external sheath layer is coated on nonmetallic protective layer
Outside.
In one preferred embodiment of the utility model, further comprise the nonmetallic protective layer be fiber yarn layer.
It further comprise that tear rope is embedded in the external sheath layer in one preferred embodiment of the utility model, it is described
Tear rope synchronous insertion during forming external sheath layer.
In one preferred embodiment of the utility model, further comprise the inner restrictive coating and external sheath layer be low cigarette without
Halogen type restrictive coating.
It further comprise the cable core include fiber unit and clad optical fiber list in one preferred embodiment of the utility model
The insulating layer of member, the excess fiber length of the fiber unit are 1.0 ‰~2.0 ‰.
It further comprise between the fiber unit and insulating layer filled with fibre in one preferred embodiment of the utility model
Cream or dry type flexible water blocking yarn.
The utility model has the beneficial effects that the outdoor leading in cable of the utility model, the cable type structure of optimization design makes
Optical cable can meet a variety of laying requirements such as aerial, direct-burried, pipeline and outdoor introducing interior, easy for construction, energy after use simultaneously
Fiber cable laying duration and use cost is enough greatly shortened, reduces the splicing point of outdoor introducing interior laying.
Detailed description of the invention
Fig. 1 is the sectional view of outdoor leading in cable in the preferred embodiment in the utility model.
Wherein: 2- cable core, 4- inner restrictive coating, 6- external sheath layer, the nonmetallic strengthening core of 8- first, 10- second is nonmetallic to be added
The nonmetallic protective layer of Qiang Xin, 12-, 14- tear rope, 16- fiber unit, 18- insulating layer.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art
The utility model may be better understood and can be practiced, but illustrated embodiment is not as the restriction to the utility model.
Embodiment
Shown in referring to Fig.1, the utility model discloses a kind of outdoor leading in cable, the cross section of above-mentioned optical cable is circle,
It includes cable core 2, the inner restrictive coating 4 for being coated on above-mentioned 2 outside of cable core, the nonmetallic protective layer being coated on the outside of inner restrictive coating 4
12, it is coated on the external sheath layer 6 in nonmetallic 12 outside of protective layer.Above-mentioned cable core 2 includes fiber unit 16 and clad optical fiber unit
16 insulating layer 18 is filled with fiber paste or dry type flexible water blocking yarn between above-mentioned fiber unit 16 and insulating layer 18.
As shown in Figure 1, being embedded with the nonmetallic strengthening core 8 of the six roots of sensation first, the non-gold of the above-mentioned six roots of sensation first in above-mentioned inner restrictive coating 4
Belong to strengthening core 8 be distributed in using the center of above-mentioned cable core 2 as on the concentric circles in the center of circle and each above-mentioned first nonmetallic strengthening core 8
Equal central angles distribution；Synchronous insertion during forming inner restrictive coating 4 of the nonmetallic strengthening core 8 of the six roots of sensation above-mentioned first.
In the present embodiment technical solution, the inner restrictive coating 4 of forming covered cable core 2 uses the inner sheath of squash type Fixture Design
Mold, inner sheath mold has mold core centre bore and six reinforcement core bore, six strengthening core pore size distributions are being with mold core centre bore
On circular concentric circles, and angle of the two neighboring hole heart for reinforcing core bore respectively between the hole heart line of mold core centre bore is
60 °, that is, each (60 °) distributions in the reinforcement equal concentric angle of core bore.
Inner restrictive coating 4, the non-gold of the six roots of sensation first during molding inner restrictive coating 4 are formed using the inner sheath mold of the above structure
Category strengthening core 8 is equidirectional with cable core 2 and respectively enters in respectively reinforcement core bore, synchronizes with the forming process of inner restrictive coating 4 embedding
Enter in inner restrictive coating 4.First nonmetallic strengthening core 8 is embedded in inner restrictive coating 4, and strengthening core can achieve complete stress, tension
Performance is more excellent, is capable of the maximum drawing-resistant function for playing strengthening core, is placed in compared to traditional by reinforcer is loose
In optical cable, under conditions of using comparable size reinforcer, the optical cable tensile performance of the application is more excellent.On the other hand, inner sheath
Layer 4 is embedded in the first uniformly distributed nonmetallic strengthening core 8 of six roots of sensation circumferencial direction, enables cable core 2 in circumferencial direction by abundant
Protection, optical cable integrally have preferable lateral pressure resistant performance, in the case where external sheath layer 6 is stripped, are tightly prevented by inner restrictive coating 4
The cable core 2 of shield can meet the requirements that optical cable is laid indoors, with this, be able to solve optical cable by the laying of outdoor introducing interior
The problem of without increasing splicing point.
Meanwhile the nonmetallic strengthening core 8 of the six roots of sensation first is uniformly distributed in circumferencial direction, the optical cable after stranding is in aerial laying by outer
Environment influence in boundary's is small, i.e., suffered load is small, in the case where meeting identical radiation environment, can reduce the first expensive nonmetallic reinforcement
The usage quantity of core 8 reduces material cost.
Certainly, according to actual needs, the quantity of the first nonmetallic strengthening core 8 can also be more, but more quantity first
The use of nonmetallic strengthening core 8 can increase the cable diameter and production cost of optical cable after stranding at double, 24 after the application stranding
The outer diameter of core optical cable can be controlled in 5~8mm.Meanwhile the manufacturing process difficulty of inner sheath mold is very big, manufacturing cost is high；
And the promotion of lateral pressure resistant performance almost can be ignored.On the other hand, the quantity of the first nonmetallic strengthening core 8 can also be less than
The six roots of sensation, for example, two, four etc., the optical cable cable diameter of stranding and the insertion six roots of sensation after insertion two, four first nonmetallic strengthening cores
The optical cable cable diameter of first nonmetallic strengthening core is suitable, and still, the optical cable after stranding only has preferable tensile property, faint
Lateral pressure resistant performance and insertion the nonmetallic strengthening core 8 of the six roots of sensation first optical cable be not a magnitude.
Herein it should be noted that cable core is not necessarily in parallel shape when the usage amount of the first nonmetallic strengthening core 8 is 2
State, the directions of the nested two first nonmetallic strengthening cores 8 of inner restrictive coating 4 may with external sheath layer two second it is nonmetallic plus
Strong core direction is vertical, and it is uneven to will lead to sleeve stress after optical cable bending.And when using the first nonmetallic strengthening core of the six roots of sensation, cable core
Restrictive coating can with uniform stressed, not by bending direction and influence, reduce fibre loss simultaneously extend optical cable service life.
The second nonmetallic strengthening core 10 is embedded in above-mentioned external sheath layer 6 as a further improvement of the utility model, on
State synchronous insertion during forming external sheath layer 6 of the second nonmetallic strengthening core 10；Wherein, the above-mentioned first nonmetallic strengthening core
Core diameter less than the second nonmetallic strengthening core core diameter.In the present embodiment technical solution, the core diameter of the first nonmetallic strengthening core 8 is
0.5~1mm, the core diameter of the second nonmetallic strengthening core 10 are 0.8~2mm；Wherein, the above-mentioned first nonmetallic strengthening core and second non-
The direction that metallic strength member is embedded in respective restrictive coating is identical.
External sheath layer 6, which is embedded in the telescopiny and inner restrictive coating 4 of the second nonmetallic strengthening core 10, is embedded in the first non-gold
The process for belonging to strengthening core 8 is consistent, and details are not described herein again.
Outer protective sleeve of the external sheath layer 6 as optical cable, is internally embedded strengthening core, so that the optical cable after stranding is with excellent
Tensile property.
Above-mentioned first nonmetallic strengthening core 8 or/and the second nonmetallic strengthening core 10 are FRP strengthening core, the reinforcement of FRP material
Core is compared to traditional aramid fiber reinforcer, and while with identical reinforcement protective effect, the usage amount of FRP will be lacked, and can reduce
The preparation cost of optical cable；On the other hand, FRP inlay can greatly reduce after inner sheath shunk because of restrictive coating caused by fibre loss
Increase.
In one preferred embodiment of the utility model, further comprise above-mentioned nonmetallic protective layer be fiber yarn layer, fiber
The material of aramid yarn layer is water resistance aramid fiber yarn, the organdy that blocks water, block water one of basalt fibre yarn or a variety of combinations, tool
There is enough protection intensity and tensile strength while having block-water performance.
Tear rope 14 is embedded in above-mentioned external sheath layer 6, above-mentioned tear rope 14 is synchronous during forming external sheath layer 6
Insertion.It is embedded in the quick stripping that tear rope 14 is conducive to external sheath layer 6, meets the easy stripping performance of aerial optical cable.
Above-mentioned inner restrictive coating 4 and external sheath layer 6 are low smoke halogen-free restrictive coating, have anti-flammability, meet indoor cable
Design requirement.
Above-mentioned fiber unit 16 is obtained more than stable optical fiber using the trombone slide mold cooperation fiber paste fill process of big draw ratio
Long, Yu Changwei 1.0 ‰~2.0 ‰ guarantees the mechanical performance and fade performance of optical cable after stranding.
The outdoor leading in cable of the above structure design can meet aerial, direct-burried, pipeline and outdoor introducing interior etc. simultaneously
A variety of laying requirements, particular technique advantage are as follows:
1, when for aerial laying: strengthening core, which is embedded in restrictive coating, is made circular optical cable, can reduce cable outer diameter ruler
While very little, there is bending resistance, softness, while there is certain lateral pressure resistant performance.When optical cable makes somebody a mere figurehead laying, it is laid on electric wire
Installation is fixed using fitting (strain insulator or overhanging golden tool) in abutment extending, light is held by preformed armor rods winding between fitting and optical cable
Cable (can also hold optical cable using other modes) is drawn or is hung, and the optical cable with certain lateral pressure resistant performance can prevent
Preformed armor rods (or other fittings) are held and damage optical cable.
2, when being used for pipeline laying: the fiber paste or dry type flexible water blocking yarn filled between fiber unit and insulating layer have resistance
Water characteristic, nonmetallic protective layer uses water resistance aramid fiber fibrous layer, so that optical cable integrally meets infiltration test requirement.
3, when being used for directly buried installation: optical cable cable type structure uses non-metallic sheath, meets directly buried installation demand.
4, when outdoor introducing interior laying: entire optical cable uses nonmetallic reinforcement structure, and oversheath is directly removed after registering one's residence
Layer is just able to satisfy the requirement laid in optical cable room, while the inner restrictive coating tool of low smoke halogen-free by the cable core that inner restrictive coating coats
There is flame retardant property.
Embodiment described above is only preferred embodiments for fully illustrating the utility model, the utility model
Protection scope it is without being limited thereto.Those skilled in the art made equivalent substitute or change on the basis of the utility model
It changes, both is within the protection scope of the present invention.The protection scope of the utility model is subject to claims.
Claims (10)
1. a kind of outdoor leading in cable, it is characterised in that: the cross section of the optical cable is circle comprising cable core is coated on institute
The external sheath layer stating inner restrictive coating on the outside of cable core and being coated on the outside of inner restrictive coating is embedded with the six roots of sensation the in the inner restrictive coating
One nonmetallic strengthening core, the nonmetallic strengthening core of the six roots of sensation first are distributed in using the center of the cable core as the concentric circles in the center of circle
Upper and each first nonmetallic strengthening core equalization central angle distribution；The first nonmetallic strengthening core is in molding described in the six roots of sensation
Synchronous insertion during restrictive coating.
2. outdoor leading in cable as described in claim 1, it is characterised in that: it is nonmetallic to be embedded with second in the external sheath layer
Strengthening core, the second nonmetallic strengthening core synchronous insertion during forming external sheath layer；Wherein, described first is nonmetallic
Core diameter of the core diameter of strengthening core less than the second nonmetallic strengthening core.
3. outdoor leading in cable as claimed in claim 2, it is characterised in that: the first nonmetallic strengthening core and the second non-gold
The direction that category strengthening core is embedded in respective restrictive coating is identical.
4. outdoor leading in cable as claimed in claim 2, it is characterised in that: the first nonmetallic strengthening core or/and second
Nonmetallic strengthening core is FRP strengthening core.
5. outdoor leading in cable as described in claim 1, it is characterised in that: be equipped between the inner restrictive coating and external sheath layer
Nonmetallic protective layer, the nonmetallic protective layer are coated on the outside of inner restrictive coating, and the external sheath layer is coated on nonmetallic protection
Layer outside.
6. outdoor leading in cable as claimed in claim 5, it is characterised in that: the nonmetallic protective layer is fiber yarn layer.
7. outdoor leading in cable as described in claim 1, it is characterised in that: be embedded with tear rope, institute in the external sheath layer
State tear rope synchronous insertion during forming external sheath layer.
8. outdoor leading in cable as described in claim 1, it is characterised in that: the inner restrictive coating and external sheath layer are low cigarette
Halogen-free type restrictive coating.
9. such as the described in any item outdoor leading in cables of claim 1-8, it is characterised in that: the cable core include fiber unit and
The insulating layer of clad optical fiber unit, the excess fiber length of the fiber unit are 1.0 ‰~2.0 ‰.
10. outdoor leading in cable as claimed in claim 9, it is characterised in that: filled between the fiber unit and insulating layer
There are fiber paste or dry type flexible water blocking yarn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821719614.5U CN208818883U (en) | 2018-10-23 | 2018-10-23 | Outdoor leading in cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821719614.5U CN208818883U (en) | 2018-10-23 | 2018-10-23 | Outdoor leading in cable |
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| Publication Number | Publication Date |
|---|---|
| CN208818883U true CN208818883U (en) | 2019-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821719614.5U Active CN208818883U (en) | 2018-10-23 | 2018-10-23 | Outdoor leading in cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031567A (en) * | 2018-10-23 | 2018-12-18 | 江苏亨通光电股份有限公司 | Outdoor leading in cable |
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2018
- 2018-10-23 CN CN201821719614.5U patent/CN208818883U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031567A (en) * | 2018-10-23 | 2018-12-18 | 江苏亨通光电股份有限公司 | Outdoor leading in cable |
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