CN212781414U - Outdoor single-mode optical cable - Google Patents
Outdoor single-mode optical cable Download PDFInfo
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- CN212781414U CN212781414U CN202021835108.XU CN202021835108U CN212781414U CN 212781414 U CN212781414 U CN 212781414U CN 202021835108 U CN202021835108 U CN 202021835108U CN 212781414 U CN212781414 U CN 212781414U
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- optical cable
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- mode optical
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Abstract
The utility model relates to the technical field of optical cables, in particular to an outdoor single-mode optical cable, which comprises an outer sheath and a single-mode optical fiber; the cross section of the outer sheath is circular, the outer sheath sequentially comprises a PBT inner layer, a polyethylene inner layer, water-blocking yarns, a polyethylene outer layer and an oil-resistant and corrosion-resistant outer layer from inside to outside, the PBT inner layer is provided with a through hole along the axis of the outer sheath, and the cross section of the through hole is triangular; the single mode fiber is contained in the through hole, a gap is reserved between the outer wall of the single mode fiber and the inner wall of the through hole, and elastic soft rubber particles are filled between the outer wall of the single mode fiber and the inner wall of the through hole. The utility model provides an outdoor single mode optical cable has improved the mechanical properties of optical cable when guaranteeing the waterproof corrosion resistance of optical cable main part, avoids it to cause the damage to inside optic fibre after bending.
Description
Technical Field
The utility model relates to an optical cable technical field especially relates to an outdoor single mode optical cable.
Background
Optical cables for outdoor installation are generally loose-tube stranded optical cables, which include a core composed of a reinforcing member and a loose tube stranded on the reinforcing member. The existing outdoor optical cable has a complex structure and easily causes damage to internal optical fibers.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that an outdoor single-mode optical cable capable of avoiding the damage of optical fibers inside the optical cable is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: an outdoor single-mode optical cable comprises an outer sheath and a single-mode optical fiber;
the cross section of the outer sheath is circular, the outer sheath sequentially comprises a PBT inner layer, a polyethylene inner layer, water-blocking yarns, a polyethylene outer layer and an oil-resistant and corrosion-resistant outer layer from inside to outside, the PBT inner layer is provided with a through hole along the axis of the outer sheath, and the cross section of the through hole is triangular;
the single mode fiber is contained in the through hole, a gap is reserved between the outer wall of the single mode fiber and the inner wall of the through hole, and elastic soft rubber particles are filled between the outer wall of the single mode fiber and the inner wall of the through hole.
In an alternative embodiment, the number of the single mode fibers is greater than or equal to two.
In an alternative embodiment, the cross-sectional shape of the through-hole is an equilateral triangle.
In an alternative embodiment, the inner polyethylene layer is embedded with FRP reinforced columns.
In an alternative embodiment, the carbon fiber reinforced column is parallel to the axis of the outer sheath.
In an alternative embodiment, two or more carbon fiber reinforced columns are uniformly distributed in the polyethylene inner layer along the circumferential direction.
The beneficial effects of the utility model reside in that: the utility model provides an outdoor single mode optical cable, including oversheath and single mode fiber, the oversheath from interior to exterior includes PBT inlayer, polyethylene inlayer in proper order, the yarn that blocks water, polyethylene is outer and resistant oily anticorrosive skin, and the cover chamber cross sectional shape design of PBT inlayer is triangle-shaped, accommodates single mode fiber wherein to fill elasticity flexible glue granule in clearance department between the two, the utility model provides an outdoor single mode optical cable has improved the mechanical properties of optical cable when guaranteeing the waterproof corrosion resistance of optical cable main part, avoids it to cause the damage to inside optic fibre after bending.
Drawings
Fig. 1 is a schematic structural diagram of an outdoor single-mode optical cable according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of an outdoor single-mode optical cable according to an embodiment of the present invention;
description of reference numerals:
1. an outer sheath; 11. a PBT inner layer; 111. a through hole; 12. an inner polyethylene layer; 13. water-blocking yarn; 14. an outer polyethylene layer; 15. an oil-resistant and corrosion-resistant outer layer;
2. a single mode optical fiber;
3. elastic soft rubber particles;
4. carbon fiber reinforced column.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 and fig. 2, an outdoor single-mode optical cable of the present invention includes an outer sheath and a single-mode optical fiber;
the cross section of the outer sheath is circular, the outer sheath sequentially comprises a PBT inner layer, a polyethylene inner layer, water-blocking yarns, a polyethylene outer layer and an oil-resistant and corrosion-resistant outer layer from inside to outside, the PBT inner layer is provided with a through hole along the axis of the outer sheath, and the cross section of the through hole is triangular;
the single mode fiber is contained in the through hole, a gap is reserved between the outer wall of the single mode fiber and the inner wall of the through hole, and elastic soft rubber particles are filled between the outer wall of the single mode fiber and the inner wall of the through hole.
From the above description, the beneficial effects of the present invention are: the utility model provides an outdoor single mode optical cable, including oversheath and single mode fiber, the oversheath from interior to exterior includes PBT inlayer, polyethylene inlayer in proper order, the yarn that blocks water, polyethylene is outer and resistant oily anticorrosive skin, and the cover chamber cross sectional shape design of PBT inlayer is triangle-shaped, accommodates single mode fiber wherein to fill elasticity flexible glue granule in clearance department between the two, the utility model provides an outdoor single mode optical cable has improved the mechanical properties of optical cable when guaranteeing the waterproof corrosion resistance of optical cable main part, avoids it to cause the damage to inside optic fibre after bending.
Furthermore, the number of the single mode fibers is more than or equal to two.
Furthermore, the cross section of the through hole is in the shape of an equilateral triangle.
Furthermore, FRP reinforcing columns are embedded in the polyethylene inner layer.
As can be seen from the above description, the FRP reinforcing column further functions to improve the strength of the optical cable.
Further, the carbon fiber reinforced column is parallel to the axis of the outer sheath.
Furthermore, more than two carbon fiber reinforced columns are uniformly distributed in the polyethylene inner layer along the circumferential direction.
Referring to fig. 1 and fig. 2, a first embodiment of the present invention is: an outdoor single-mode optical cable comprises an outer sheath 1 and a single-mode optical fiber 2;
the cross section of the outer sheath 1 is circular, the outer sheath 1 sequentially comprises a PBT inner layer 11, a polyethylene inner layer 12, a water-blocking yarn 13, a polyethylene outer layer 14 and an oil-resistant and corrosion-resistant outer layer 15 from inside to outside, the PBT inner layer 11 is provided with a through hole 111 along the axis of the outer sheath 1, and the cross section of the through hole 111 is triangular;
the single mode fiber 2 is contained in the through hole 111, a gap is formed between the outer wall of the single mode fiber 2 and the inner wall of the through hole 111, and elastic soft rubber particles 3 are filled between the outer wall of the single mode fiber 2 and the inner wall of the through hole 111.
The number of the single mode fibers 2 is more than or equal to two. The cross-sectional shape of the through-hole 111 is an equilateral triangle. The inner polyethylene layer 12 is embedded with FRP reinforced columns. The carbon fibre reinforced column 4 is parallel to the axis of the outer sheath 1. Two or more carbon fiber reinforced columns 4 are uniformly distributed in the polyethylene inner layer 12 along the circumferential direction.
To sum up, the utility model provides an outdoor single mode optical cable, including oversheath and single mode fiber, oversheath from interior to exterior includes PBT inlayer, polyethylene inlayer in proper order, blocks water yarn, polyethylene skin and resistant oily anticorrosive skin, and the cover chamber cross sectional shape design of PBT inlayer is triangle-shaped, accepts single mode fiber wherein to fill elasticity flexible glue granule in clearance department between the two, the utility model provides an outdoor single mode optical cable has improved the mechanical properties of optical cable when guaranteeing the waterproof corrosion resistance of optical cable main part, causes the damage to inside optic fibre after avoiding it to bend.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (6)
1. An outdoor single-mode optical cable is characterized by comprising an outer sheath and a single-mode optical fiber;
the cross section of the outer sheath is circular, the outer sheath sequentially comprises a PBT inner layer, a polyethylene inner layer, water-blocking yarns, a polyethylene outer layer and an oil-resistant and corrosion-resistant outer layer from inside to outside, the PBT inner layer is provided with a through hole along the axis of the outer sheath, and the cross section of the through hole is triangular;
the single mode fiber is contained in the through hole, a gap is reserved between the outer wall of the single mode fiber and the inner wall of the through hole, and elastic soft rubber particles are filled between the outer wall of the single mode fiber and the inner wall of the through hole.
2. The outdoor single-mode optical cable according to claim 1, wherein the number of the single-mode optical fibers is two or more.
3. The outdoor single-mode optical cable according to claim 1, wherein the cross-sectional shape of the through-hole is an equilateral triangle.
4. The outdoor single mode optical cable of claim 1, wherein the inner polyethylene layer is embedded with FRP reinforcement columns.
5. The outdoor single mode optical cable of claim 4, wherein the FRP reinforcement columns are parallel to the axis of the outer jacket.
6. The outdoor single-mode optical cable according to claim 4, wherein two or more FRP reinforcing columns are uniformly distributed in the polyethylene inner layer along the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021835108.XU CN212781414U (en) | 2020-08-28 | 2020-08-28 | Outdoor single-mode optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021835108.XU CN212781414U (en) | 2020-08-28 | 2020-08-28 | Outdoor single-mode optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212781414U true CN212781414U (en) | 2021-03-23 |
Family
ID=75055189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021835108.XU Active CN212781414U (en) | 2020-08-28 | 2020-08-28 | Outdoor single-mode optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212781414U (en) |
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2020
- 2020-08-28 CN CN202021835108.XU patent/CN212781414U/en active Active
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