CN203745700U - Structure-improved central-tube ribbon optic cable - Google Patents
Structure-improved central-tube ribbon optic cable Download PDFInfo
- Publication number
- CN203745700U CN203745700U CN201420082587.0U CN201420082587U CN203745700U CN 203745700 U CN203745700 U CN 203745700U CN 201420082587 U CN201420082587 U CN 201420082587U CN 203745700 U CN203745700 U CN 203745700U
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- water
- steel band
- type optical
- tube type
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 47
- 239000010959 steel Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000013307 optical fiber Substances 0.000 claims abstract description 41
- 239000000835 fiber Substances 0.000 claims abstract description 33
- 239000002674 ointment Substances 0.000 claims abstract description 10
- 230000002787 reinforcement Effects 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 10
- 239000007769 metal material Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- -1 polybutylene terephthalate Polymers 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 229920001887 crystalline plastic Polymers 0.000 claims description 5
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 238000004078 waterproofing Methods 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000012466 permeate Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 17
- 230000005540 biological transmission Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Abstract
A structure-improved central-tube ribbon optic cable comprises an outer sheath, reinforcers, a steel band, a central beam tube, a fiber ointment and an optical fiber ribbon, and is characterized in that the inner circumferential face of the outer sheath is provided with grooves; the reinforcers are arranged in the grooves; and a water-blocking dam is arranged between the outer circumferential face of the steel band and the inner circumferential face of the outer sheath. According to the utility model, the water-blocking dam is arranged between the steel band of a longitudinal wrap and the reinforcers and the reinforcers fit the steel band closely. When water permeates along a gap between the reinforcers and the steel band and runs into the water-blocking dam, the water-blocking dam expands to fill the gap so as to block a channel of water. Thus, the purpose of longitudinal water-blocking is realized, and water permeability of the optic cable is guaranteed. The optic cable has a simple structure. After secondary coating production of the optical fiber ribbon, a sheath process is directly carried out without centering a cabling process. The production process is short. The optic cable is a central-tube ribbon structure, the external diameter of the optic cable is small, and fiber density is high. The optic cable is applicable to be used in large trunk lines, and pipeline resources are saved.
Description
Technical field
The utility model relates to a kind of structure of optical cable, more specifically to a kind of central tube type optical fiber ribbon cable that improves structure.
Background technology
Central tube type optical fiber ribbon cable is a kind of primary structure pattern of optical cable for communication, and therefore the feature that it has, and cable outer diameter is little, optical fiber dense degree is high, can multifiber continue has simultaneously obtained using widely.
In order to ensure the normal transmission performance of central tube type optical fiber ribbon cable, central tube type optical fiber ribbon cable must have longitudinal water-blocking performance.In current actual use product, there is gap, easily cause the underproof problem of permeability performance at contact area owing to can not effectively solve steel band after reinforcement and vertical bag and touch time, therefore in order to ensure the permeability performance of central tube type optical fiber ribbon cable, conventionally reinforcement is placed in the plastic sheath outside vertical Baogang band, as shown in Figure 2.Be that above-mentioned central tube type optical fiber ribbon cable comprises oversheath 1, reinforcement 4, steel band 3, center beam tube 5, optical fiber ointment 6 and fibre ribbon 7 from outside to inside successively, in described oversheath 1, have mounting hole, described reinforcement 4 is located in the mounting hole of oversheath 1.
But above-mentioned this design proposal can cause the plastic layer that has about 0.4mm between reinforcement and steel band, this had both increased the external diameter of central tube type optical fiber ribbon cable, had also wasted a large amount of materials simultaneously, had significantly increased the cost of product.
Summary of the invention
Technical problem to be solved in the utility model is the shortcoming for prior art external diameter is large, consume material is more, cost is higher, a kind of central tube type optical fiber ribbon cable that improves structure is provided, and the central tube type optical fiber ribbon cable of this improvement structure can effectively reduce the external diameter of central tube type optical fiber ribbon cable in the situation that ensureing longitudinal water-blocking effect.The technical scheme adopting is as follows:
A kind of central tube type optical fiber ribbon cable that improves structure, comprise successively from outside to inside oversheath, reinforcement, steel band, center beam tube, optical fiber ointment and fibre ribbon, it is characterized in that: described oversheath inner peripheral surface has groove, described reinforcement is placed in groove, between the outer circumference surface of described steel band and oversheath inner peripheral surface, is provided with the dam that blocks water.Because reinforcement is adjacent to steel band, and the dam that blocks water is set between reinforcement and steel band, can ensure like this permeability performance of optical cable, and without the thickness that increases oversheath, therefore the external diameter of optical cable can diminishes.
Preferably scheme, described in the dam that blocks water comprise at least one line that blocks water, described in the line that blocks water unidirectional wrapped on the outer circumference surface of steel band.In the time that water permeates along the gap between reinforcement and steel band, the line that blocks water is met water and is expanded and fill up gap rapidly, and the passage of blocking-up water, realizes longitudinal water-blocking object, has ensured the permeability performance of optical cable.
Preferably scheme, described in the line that blocks water be water blocking yarn, cotton yarn or the Elastic plastic-rubber bar with water-proofing powder.On described water blocking yarn, have water-proofing powder, meeting water can expand, and cotton yarn is met water and can be expanded, and Elastic plastic-rubber bar is subject to the extruding of steel wire and steel band, can block gap, so just can play block-water effect.
Preferably scheme, described oversheath adopts PE(tygon) sheath or low-smoke halogen-free flame-retardant sheath.Also can adopt other material according to the demand of different user.
Preferably scheme, the vertical central beam tube outside that wraps in of described steel band.Described steel band generally adopts the form of embossing, to improve the cohesive strength between intensity and steel band and the oversheath of steel band.Steel band can improve the lateral pressure resistant performance of optical cable.Simultaneously, in the lap-joint of steel band, scribble appropriate intumescent greasy for preventing water, can prevent that steel band lap-joint from leaking.
Preferably scheme, includes at least one fibre ribbon in the beam tube of described center, and is all full of optical fiber ointment in the gap of fibre ribbon and central beam inside pipe wall.More excellent scheme, described center beam tube by crystalline plastics by extrusion molding, as PBT(polybutylene terephthalate), PP(polypropylene) etc.The number of described fibre ribbon can be 1, also can be many.In the time adopting multifiber band, multifiber band is superimposed together and forms a fibre ribbon matrix, every fibre ribbon can be 4 cores, 6 cores, 8 cores, 10 cores, 12 cores or 24 core optic fibre belt optics, the every contained fiber number of optical cable can reach 432 cores, can be according to the demand setting of different user, fibre ribbon is arranged in the beam tube of center with unidirectional stranded form, in the time that fibre ribbon is a fibre ribbon matrix, the fibre ribbon matrix being superimposed together is simultaneously unidirectional stranded, ensures bending property and the transmission performance of optical cable.
Described optical fiber ointment has thixotropy, has both ensured the transmission performance of optical fiber, plays again the effect of longitudinal water-blocking in the beam tube of center.
Preferably scheme, described reinforcement adopts metal material or nonmetallic materials.More excellent scheme, described metal material is phosphatization steel wire, described nonmetallic materials are FRP rod.
The utility model beneficial effect is against existing technologies, due to outside the steel band of vertical bag and one deck dam that blocks water is set between reinforcement, reinforcement is close to steel band, in the time that water permeates along gap between reinforcement and steel band, to run into the dam that blocks water, the dam that blocks water expands and fills up gap, the passage of blocking-up water, realize longitudinal water-blocking object, ensured the permeability performance of optical cable; Cable configuration is simple, after the secondary coated production of fibre ribbon, does not need, through stranding operation, directly to enter sheath operation, and production procedure is short; Tubular type banded structure centered by optical cable, fibre ribbon can be 4 cores, 6 cores, 8 cores, 10 cores, 12 cores or 24 core optic fibre belt optics, optical fibre in optical cable core is counted maximum can reach 432 cores, cable outer diameter is little, optical fiber dense degree is high, is suitable for large-scale basic routing line and uses, and saves conduit resource.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the structural representation of the utility model prior art.
Embodiment
Embodiment 1
As shown in Figure 1, the central tube type optical fiber ribbon cable of the improvement structure in the present embodiment, comprise successively from outside to inside oversheath 1, reinforcement 4, steel band 3, center beam tube 5, optical fiber ointment 6 and fibre ribbon 7, described oversheath 1 inner peripheral surface has groove, described reinforcement 4 is placed in groove, between the outer circumference surface of described steel band 3 and oversheath 1 inner peripheral surface, is provided with the dam that blocks water.Because reinforcement 4 is adjacent to steel band 3, and the dam that blocks water is set between reinforcement 4 and steel band 3, can ensure like this permeability performance of optical cable, and without the thickness that increases oversheath 1, therefore the external diameter of optical cable can diminishes.
The described dam that blocks water comprises the line 2 that blocks water, described in the line 2 that blocks water unidirectional wrapped on the outer circumference surface of steel band 3.In the time that water permeates along the gap between reinforcement 4 and steel band 3, the line 2 that blocks water is met water and is expanded and fill up gap rapidly, and the passage of blocking-up water, realizes longitudinal water-blocking object, has ensured the permeability performance of optical cable.
Preferably scheme, described in block water line 2 for the water blocking yarn with water-proofing powder.
Described oversheath 1 adopts PE(tygon) sheath or low-smoke halogen-free flame-retardant sheath.Also can adopt other material according to the demand of different user.
Vertical center beam tube 5 outsides that wrap in of described steel band 3.The general form that adopts embossing of described steel band 3, to improve the cohesive strength between intensity and steel band 3 and the oversheath 1 of steel band 3.Steel band 3 can improve the lateral pressure resistant performance of optical cable.Simultaneously, in the lap-joint of steel band 3, scribble appropriate intumescent greasy for preventing water, can prevent that steel band 3 lap-joints from leaking.
In described center beam tube 5, include a fibre ribbon 7, and be all full of optical fiber ointment 6 in fibre ribbon 7 and the gap of center beam tube 5 inwalls.Described center beam tube 5 by extrusion molding, adopts PBT(polybutylene terephthalate by crystalline plastics in the present embodiment).
Described optical fiber ointment 6 has thixotropy, has both ensured the transmission performance of optical fiber, plays again the effect of center beam tube 5 interior longitudinal water-blockings.
Described reinforcement 4 adopts metal material, and described metal material is phosphatization steel wire.
Embodiment 2
The central tube type optical fiber ribbon cable of the improvement structure in the present embodiment and the difference of embodiment 1 are:
The described dam that blocks water comprises 3 lines 2 that block water, and the described line 2 that respectively blocks water is unidirectional wrapped on the outer circumference surface of steel band 3.
In described center beam tube 5, include 3 fibre ribbons 7.While adopting multifiber band 7, multifiber band 7 is superimposed together and forms fibre ribbon 7 matrixes, every fibre ribbon 7 can be 4 cores, 6 cores, 8 cores, 10 cores, 12 cores or 24 core optic fibre belt optics 7, the every contained fiber number of optical cable can reach 432 cores, can be according to the demand setting of different user, fibre ribbon 7 is arranged in center beam tube 5 with unidirectional stranded form, in the time that fibre ribbon 7 is fibre ribbon 7 matrix, fibre ribbon 7 matrixes that are superimposed together are simultaneously unidirectional stranded, ensure bending property and the transmission performance of optical cable.
Described center beam tube 5 by extrusion molding, adopts PP(polypropylene by crystalline plastics in the present embodiment).
The described line 2 that blocks water is for cotton yarn.
Described reinforcement 4 adopts nonmetallic materials, and described nonmetallic materials are FRP rod.
Embodiment 3
The central tube type optical fiber ribbon cable of the improvement structure in the present embodiment and the difference of embodiment 1 are:
The described line 2 that blocks water is for Elastic plastic-rubber bar.
In addition; it should be noted that, the specific embodiment described in this instructions, its each several part titles etc. can be different; all equivalence or simple change of doing according to described structure, feature and the principle of the utility model patent design, are included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various amendments or supplements or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, all should belong to protection domain of the present utility model.
Claims (10)
1. one kind is improved the central tube type optical fiber ribbon cable of structure, comprise successively from outside to inside oversheath, reinforcement, steel band, center beam tube, optical fiber ointment and fibre ribbon, it is characterized in that: described oversheath inner peripheral surface has groove, described reinforcement is placed in groove, between the outer circumference surface of described steel band and oversheath inner peripheral surface, is provided with the dam that blocks water.
2. the central tube type optical fiber ribbon cable of improvement structure as claimed in claim 1, is characterized in that: described in the dam that blocks water comprise at least one line that blocks water, described in the line that blocks water unidirectional wrapped on the outer circumference surface of steel band.
3. the central tube type optical fiber ribbon cable of improvement structure as claimed in claim 1, is characterized in that: described in the line that blocks water be water blocking yarn, cotton yarn or the Elastic plastic-rubber bar with water-proofing powder.
4. the central tube type optical fiber ribbon cable of improvement structure as claimed in claim 1, is characterized in that: described oversheath adopts PE sheath or low-smoke halogen-free flame-retardant sheath.
5. the central tube type optical fiber ribbon cable of improvement structure as claimed in claim 1, is characterized in that: the vertical central beam tube outside that wraps in of described steel band.
6. the central tube type optical fiber ribbon cable of improvement structure as claimed in claim 1, is characterized in that: in the beam tube of described center, include at least one fibre ribbon, and be all full of optical fiber ointment in the gap of fibre ribbon and central beam inside pipe wall.
7. the central tube type optical fiber ribbon cable of improvement structure as claimed in claim 1, is characterized in that: described center beam tube by crystalline plastics by extrusion molding.
8. the central tube type optical fiber ribbon cable of improvement structure as claimed in claim 7, is characterized in that: described crystalline plastics is polybutylene terephthalate or polypropylene.
9. the central tube type optical fiber ribbon cable of improvement structure as claimed in claim 1, is characterized in that: described reinforcement adopts metal material or nonmetallic materials.
10. the central tube type optical fiber ribbon cable of improvement structure as claimed in claim 9, is characterized in that: described metal material is phosphatization steel wire, and described nonmetallic materials are FRP rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420082587.0U CN203745700U (en) | 2014-02-26 | 2014-02-26 | Structure-improved central-tube ribbon optic cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420082587.0U CN203745700U (en) | 2014-02-26 | 2014-02-26 | Structure-improved central-tube ribbon optic cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203745700U true CN203745700U (en) | 2014-07-30 |
Family
ID=51345483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420082587.0U Expired - Lifetime CN203745700U (en) | 2014-02-26 | 2014-02-26 | Structure-improved central-tube ribbon optic cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203745700U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837954A (en) * | 2014-02-26 | 2014-06-04 | 汕头高新区奥星光通信设备有限公司 | Central-tube-type ribbon optical fiber cable with improved structure |
| CN105353484A (en) * | 2015-12-16 | 2016-02-24 | 南京华信藤仓光通信有限公司 | Optical cable with large core number |
| CN106950667A (en) * | 2015-04-23 | 2017-07-14 | 龚利芬 | A kind of central-beam tube type fiber optic cable and manufacture method |
-
2014
- 2014-02-26 CN CN201420082587.0U patent/CN203745700U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837954A (en) * | 2014-02-26 | 2014-06-04 | 汕头高新区奥星光通信设备有限公司 | Central-tube-type ribbon optical fiber cable with improved structure |
| CN106950667A (en) * | 2015-04-23 | 2017-07-14 | 龚利芬 | A kind of central-beam tube type fiber optic cable and manufacture method |
| CN106950667B (en) * | 2015-04-23 | 2019-07-05 | 江苏华脉光电科技有限公司 | A kind of central-beam tube type fiber optic cable and manufacturing method |
| CN105353484A (en) * | 2015-12-16 | 2016-02-24 | 南京华信藤仓光通信有限公司 | Optical cable with large core number |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
|
| CX01 | Expiry of patent term |