CN217506201U - All-dielectric pipeline direct-buried optical cable - Google Patents
All-dielectric pipeline direct-buried optical cable Download PDFInfo
- Publication number
- CN217506201U CN217506201U CN202122902940.8U CN202122902940U CN217506201U CN 217506201 U CN217506201 U CN 217506201U CN 202122902940 U CN202122902940 U CN 202122902940U CN 217506201 U CN217506201 U CN 217506201U
- Authority
- CN
- China
- Prior art keywords
- layer
- glass fiber
- optical cable
- sheath
- dielectric
- 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.)
- Active
Links
Images
Abstract
The utility model discloses an all-dielectric pipeline direct-burried optical cable, include by interior optic fibre, inner sheath, first glass fiber layer and the first restrictive coating that sets gradually outside to, the glass fiber stick is worn to be equipped with along the extending direction in the first restrictive coating. The glass fiber layer has certain bending resistance and lateral pressure resistance, and can better protect the internal optical fiber. And the glass fiber rod therein sets up in first restrictive coating, can be protected by first restrictive coating, plays fine tensile effect moreover. Through setting up the glass fiber layer to and the glass fiber stick, can play fine tensile, bending resistance and anti side pressure effect, and then need not to adopt metal armor layer etc. again, and then can reduce the metalwork content effectively, get rid of the metalwork even, and then play better anti-lightning effect. In conclusion, the all-dielectric pipeline direct-buried optical cable can effectively solve the problem that the lightning stroke resistance effect of the existing direct-buried optical cable is not good.
Description
Technical Field
The utility model relates to a cable technical field, more specifically say, relate to an all-dielectric pipeline direct-burried optical cable.
Background
The traditional pipeline direct-buried optical cable is characterized in that fiber paste is sleeved into a loose tube made of a high-modulus material, the loose tube is filled with a waterproof compound, and the loose tube or a cable member containing a filling rope is stranded around a central metal reinforced core to form a circular cable core. A gap in the cable core is filled with a water-blocking filler, then a plastic-coated aluminum tape is longitudinally wrapped, and then a layer of polyethylene inner sheath is extruded, and a double-sided plastic-coated steel tape outside the inner sheath is longitudinally wrapped and then a polyethylene sheath is extruded to form a cable. The optical cable is suitable for long-distance communication and interoffice communication, and is particularly suitable for being used as a transmission feeder in scenes with higher requirements on moisture resistance, rat resistance and the like. Such cables suffer from the disadvantages of large size, heavy weight, and the inclusion of metal strength members to avoid lightning strikes.
In summary, how to effectively solve the problem of poor lightning stroke resistance effect of the existing direct-buried optical cable is a problem which needs to be solved urgently by the technical personnel in the field at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims to provide an all-dielectric pipeline buried optical cable, this all-dielectric pipeline buried optical cable can solve the problem that present buried optical cable anti-lightning effect is not good effectively.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides an all-dielectric pipeline direct-burried optical cable, includes optic fibre, inner sheath, first glass fiber layer and the first restrictive coating that sets gradually from inside to outside, the glass fiber stick is worn to be equipped with along the extending direction in the first restrictive coating.
In this all-dielectric pipeline direct-burried optical cable, set up the glass fiber layer, and all set up the restrictive coating inside and outside the glass fiber layer to can play the effect of buffering to the glass fiber layer striking through the restrictive coating, and the glass fiber layer has certain bending resistance, anti side pressure ability, the inside optic fibre of protection that can be better. And the glass fiber rod setting wherein can be protected by first restrictive coating in first restrictive coating, plays fine tensile effect moreover. Through setting up the glass fiber layer to and the glass fiber stick, can play fine tensile, bending resistance and anti side pressure effect, and then need not to adopt metal armor layer etc. again, and then can reduce the metalwork content effectively, get rid of the metalwork even, and then play better anti-lightning effect. In conclusion, the all-dielectric pipeline direct-buried optical cable can effectively solve the problem that the lightning stroke resistance effect of the existing direct-buried optical cable is not good.
Preferably, a second glass fiber layer and a second sheath layer are sequentially arranged on the outer side of the first sheath layer from inside to outside.
Preferably, a plurality of optical fibers arranged in parallel are arranged on the inner side of the inner sheath, and an aramid fiber central reinforcing piece is filled in a gap between each optical fiber and the inner sheath.
Preferably, the first glass fiber layer is a glass fiber yarn layer, and the second glass fiber layer is a glass fiber belt layer.
Preferably, the optical fiber includes a core and a tight cladding layer wrapped outside the core.
Preferably, the first sheath layer is a polyolefin layer, and the second sheath layer comprises a polyethylene sheath layer and a nylon sheath layer wrapped on the outer side of the polyethylene sheath layer.
Preferably, a tearing rope is arranged between the first sheath layer and the first glass fiber layer, and a tearing rope is arranged between the second sheath layer and the second glass fiber layer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structure diagram of an all-dielectric pipeline directly-buried optical cable provided by an embodiment of the present invention.
The drawings are numbered as follows:
the optical fiber comprises an optical fiber 1, an aramid fiber central reinforcement 2, an inner sheath 3, a glass fiber rod 4, a glass fiber yarn layer 5, a polyolefin layer 6, a glass fiber belt layer 7, a polyethylene sheath layer 8, a nylon sheath layer 9 and a tearing rope 10.
Detailed Description
The embodiment of the utility model discloses full medium pipeline direct-burried optical cable to solve the problem that present direct-burried optical cable anti thunder hit the effect not good effectively.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic cross-sectional structure diagram of an all-dielectric pipeline directly-buried optical cable according to an embodiment of the present invention.
In a specific embodiment, the embodiment provides an all-dielectric pipeline buried optical cable, specifically, the all-dielectric pipeline buried optical cable comprises an optical fiber 1, an inner sheath 3, a first glass fiber layer, a first sheath layer and a glass fiber rod 4.
Wherein the optical fibers 1 are located inside the inner sheath 3, the particular inner sheath 3 is provided with one or more optical fibers 1, for example with two to twenty-four optical fibers 1. Wherein the inner sheath 3 is preferably a one-shot sheath.
And first glass fiber layer cover is established in the inner sheath 3 outside, and first restrictive coating cover is established in the first glass fiber layer outside to from interior to exterior sets gradually optic fibre 1, inner sheath 3, first glass fiber layer and first restrictive coating. Wherein first restrictive coating and inner sheath 3 are the restrictive coating, specific restrictive coating, the restrictive coating that uses on the optical cable especially, and concrete material shaping mode all can be selected from prior art as required, no longer gives unnecessary details here.
Wherein the first sheath layer is provided with a glass fiber rod 4 along the extending direction, two sides away from each other are generally provided with a glass fiber rod 4 respectively, of course, three or more glass fiber rods 4 can be uniformly arranged along the circumferential direction, and the glass fiber rods 4 play a certain role in hardness reinforcement. In order to wear to establish glass fiber rod 4 in through the restrictive coating, can possess certain support nature when satisfying the outdoor short distance overhead user demand of optical cable, for whole cable provides certain rigidity at the in-process of poling.
In this all-dielectric pipeline direct-burried optical cable, set up the glass fiber layer, and all set up the restrictive coating inside and outside the glass fiber layer to can play the effect of buffering to the glass fiber layer striking through the restrictive coating, and the glass fiber layer has certain bending resistance, anti side pressure ability, the inside optic fibre of protection that can be better. And glass fiber rod 4 wherein sets up in first restrictive coating, can be protected by first restrictive coating, plays fine tensile effect moreover. Through setting up the glass fiber layer to and glass fiber rod 4, can play fine tensile, bending resistance and anti side pressure effect, and then need not to adopt metal armor layer etc. again, and then can reduce the metalwork content effectively, get rid of the metalwork even, and then play better anti-lightning effect. In conclusion, the all-dielectric pipeline direct-buried optical cable can effectively solve the problem that the lightning stroke resistance effect of the existing direct-buried optical cable is not good.
Furthermore, in order to achieve a better side pressure resistance effect, it is preferable that a second glass fiber layer and a second sheath layer are sequentially arranged on the outer side of the first sheath layer from inside to outside. At the moment, the first sheath layer and the second sheath layer can perform impact protection on the second glass fiber layer between the first sheath layer and the second sheath layer. Set up first glass fiber layer and second glass fiber layer simultaneously to make can the double insurance, according to the stress characteristic, the glass fiber layer of same area cross section sets up the one deck and compares and sets up two-layerly, and anti side pressure, anti bending property are good, and sets up more layers, then means to set up more restrictive coatings, and can increase cost.
Specifically, the first glass fiber layer may be a glass fiber gauze layer 5, and the second glass fiber layer may be a glass fiber tape layer 7, so that the thickness of the second glass fiber layer is significantly greater than that of the first glass fiber layer, so as to adapt to the large diameter of the second glass fiber layer, and avoid the overall diameter being too large. The glass fiber yarn layer 5 can be formed by winding in a general manner by referring to the forming manner of the water-blocking yarn layer; the glass fiber tape layer 7 may be formed by longitudinal wrapping the glass fiber tape layer 7 according to the forming method of the water blocking tape layer. Wherein the first glass fiber layer is preferably a high modulus glass fiber gauze layer 5, wherein the glass fiber gauze layer 5 is preferably a fluorine-free boron-free high strength glass fiber gauze layer, providing higher reliability, longer service life, lower cost, excellent high temperature resistance and corrosion resistance: while maintaining high impact resistance and high fatigue resistance. The glass fiber layer plays a certain rat-proof function when being reinforced.
For better central reinforcement effect, it is preferable here that a plurality of said optical fibers 1 are arranged side by side inside the inner sheath 3, and the gap between the optical fibers 1 and said inner sheath 3 is filled with aramid fiber central reinforcement 2. And the optical fiber 1 comprises a core and a tight cladding layer wrapping the outside of the core. If four optical fibers 1 which are arranged in two rows and two columns and arranged in a rectangular shape are arranged, the aramid fiber central reinforcing pieces are arranged between the four optical fibers 1 and between the optical fibers 1 and the inner sheath 3 on the outer side.
In order to enable the sheath layer to form better protection, the first sheath layer is preferably a polyolefin layer 6, and the second sheath layer comprises a polyethylene sheath layer 8 and a nylon sheath layer 9 wrapping the outer side of the polyethylene sheath layer 8. Of course, other sheath layers may be used. And the second restrictive coating adopts two restrictive coatings, can make two restrictive coatings advantage complementary. In order to better break the sheath layer to expose the internal optical fiber 1, a tearing rope 10 is preferably disposed between the first sheath layer and the first glass fiber layer, and a tearing rope 10 is preferably disposed between the second sheath layer and the second glass fiber layer. Wherein the inner sheath 3 may be a low smoke zero halogen polyolefin sheath. The combination of the polyethylene sheath layer 8 and the nylon sheath layer 9 can provide performance protection under the condition of meeting the outdoor direct-buried scene environment of the optical cable, and meanwhile, the whole cable meets the rat-proof performance. The nylon material has the characteristics of thermoplasticity, light weight, good toughness, chemical resistance, good durability and the like, and is suitable for scenes such as pipelines, direct burial and the like.
In another embodiment, the present embodiment provides a lightweight all-dielectric pipeline buried optical cable, specifically, the lightweight all-dielectric pipeline buried optical cable comprises an optical fiber 1, an aramid fiber central reinforcement 2, an inner jacket 3, a glass fiber rod 4, a glass fiber yarn layer 5, a polyolefin layer 6(LSZH), a glass fiber tape layer 7, a polyethylene sheath layer 8, a nylon sheath layer 9, and a ripcord 10.
Wherein optic fibre 1 and above-mentioned aramid fiber center reinforcement 2 all are located inner sheath 3, and wherein optic fibre 1 is the tight package optic fibre, includes the fibre core promptly and the tight cladding of tight package outside the fibre core. Generally, a plurality of optical fibers 1 are arranged in the inner sheath 3, two to twenty-four optical fibers 1 can be arranged, for example, four optical fibers 1 are arranged, and a gap between the inner sheath 3 and the optical fibers 1 is filled with an aramid fiber central reinforcing member 2 to play a role of central reinforcement. Wherein the inner sheath 3 is preferably a one-shot sheath layer.
The outer side of the inner sheath 3 is provided with a glass fiber yarn layer 5, a polyolefin layer 6, a glass fiber belt layer 7, a polyethylene sheath layer 8 and a nylon sheath layer 9 from inside to outside in sequence. Wherein the polyolefin 6 is provided with a glass fiber rod 4 along the extending direction, and a tearing rope 10 is arranged between the glass fiber belt layer 7 and the polyethylene sheath layer 8 and/or between the polyolefin layer 6 and the glass fiber gauze layer 5. Wherein the inner sheath can be a low smoke zero halogen polyolefin sheath.
Light-duty all-medium pipeline direct-burried optical cable satisfies the free switching of four scenes in the aspect of the structure type and need not the theory of node design, can satisfy soft, the fire-retardant characteristic of indoor wiring at the inlet: the characteristics of corrosion damage of the optical cable caused by geological environment can be met by direct burial before the lead-in end: the requirement of using 100 meters and the following span can be met at the short-distance overhead end: the pipe end can meet the characteristic that the pipe can be directly penetrated without traction. Adopting a glass fiber tape longitudinal wrapping technology, longitudinally wrapping and protecting the whole glass fiber tape around the secondary sheath layer, closing and sewing the longitudinal wrapping by longitudinal wrapping equipment in the outer protecting process, and isolating the secondary sheath from the outer sheath; the glass fiber tape is made to just wrap the secondary sheath layer, the overlapping position is not generated to influence the optical cable structure, and the overall mechanical performance and environmental performance of the optical cable are also improved. Adopt multilayer stack protection against rodents technique, non-metallic reinforcement and restrictive coating all possess the protection against rodents ability, mainly rely on the reinforcing of glass fiber material to sting the oral cavity of mouse on non-metallic layer, mainly provide the protection against rodents effect through the selection to the material at the restrictive coating. The performance of each scene is excellent, and a full-dry optical cable structure (no-fiber paste and no-cable paste) is adopted, so that the environment is not polluted: the preparation time for connection is shortened, and the construction efficiency is greatly improved. Therefore, the light all-dielectric pipeline direct-buried optical cable adopts an all-dielectric structure, is simple in structure, light in weight, convenient and quick to construct, prevents lightning stroke and mouse bite, and greatly reduces the construction period and construction cost.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The all-dielectric pipeline directly-buried optical cable is characterized by comprising an optical fiber, an inner sheath, a first glass fiber layer and a first sheath layer which are sequentially arranged from inside to outside, wherein a glass fiber rod penetrates through the first sheath layer along the extending direction.
2. The all-dielectric pipeline directly-buried optical cable according to claim 1, wherein a second glass fiber layer and a second sheath layer are sequentially arranged on the outer side of the first sheath layer from inside to outside.
3. The all-dielectric pipeline direct-buried optical cable according to claim 2, wherein a plurality of the optical fibers are arranged in parallel inside the inner sheath, and a gap between the optical fibers and the inner sheath is filled with an aramid fiber central reinforcement.
4. The all-dielectric pipeline buried optical cable of claim 3, wherein said first glass fiber layer is a glass fiber yarn layer and said second glass fiber layer is a glass fiber tape layer.
5. The all-dielectric-pipe direct-burial optical cable of claim 4, wherein the optical fiber comprises a fiber core and a tight cladding layer wrapped outside the fiber core.
6. The all-dielectric pipeline direct-burried optical cable according to claim 5, wherein the first sheathing layer is a polyolefin layer, and the second sheathing layer comprises a polyethylene sheathing layer and a nylon sheathing layer wrapped outside the polyethylene sheathing layer.
7. The all-dielectric pipeline buried optical cable according to claim 6, wherein a ripcord is disposed between said first jacket layer and said first glass fiber layer, and a ripcord is disposed between said second jacket layer and said second glass fiber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122902940.8U CN217506201U (en) | 2021-11-22 | 2021-11-22 | All-dielectric pipeline direct-buried optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122902940.8U CN217506201U (en) | 2021-11-22 | 2021-11-22 | All-dielectric pipeline direct-buried optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217506201U true CN217506201U (en) | 2022-09-27 |
Family
ID=83337658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122902940.8U Active CN217506201U (en) | 2021-11-22 | 2021-11-22 | All-dielectric pipeline direct-buried optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217506201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116009172A (en) * | 2023-03-28 | 2023-04-25 | 江苏中天科技股份有限公司 | ADSS optical cable, manufacturing method and manufacturing device thereof |
-
2021
- 2021-11-22 CN CN202122902940.8U patent/CN217506201U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116009172A (en) * | 2023-03-28 | 2023-04-25 | 江苏中天科技股份有限公司 | ADSS optical cable, manufacturing method and manufacturing device thereof |
| CN116009172B (en) * | 2023-03-28 | 2023-06-09 | 江苏中天科技股份有限公司 | ADSS optical cable, manufacturing method and manufacturing device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103399385B (en) | Double-layer stranded all-dry type optical cable | |
| CN201732191U (en) | Flexible type fully-armored waterproof tail cable | |
| WO2022116840A1 (en) | 8-shaped optical cable resistant to bites of creatures | |
| CN211125081U (en) | Armored photoelectric composite cable | |
| CN217506201U (en) | All-dielectric pipeline direct-buried optical cable | |
| CN113866926A (en) | All-dielectric pipeline direct-buried optical cable | |
| CN206991812U (en) | A kind of multicore anti-torque control cable | |
| CN203535272U (en) | Miniature multi-core full-dry leading-in optical cable | |
| AU2011100839A4 (en) | A flexible stranded optical fiber cable | |
| WO2020082918A1 (en) | Aerial optical cable | |
| CN208818887U (en) | Aerial optical cable | |
| KR101395474B1 (en) | Optical fiber cable | |
| CN210488064U (en) | Outdoor central beam tube type optical cable | |
| CN211718579U (en) | Light rat-proof home-entering optical cable | |
| CN211905794U (en) | High-density easy-to-peel rat-proof micro-beam multi-core optical cable | |
| CN210489270U (en) | Armored double-sheath photoelectric composite cable | |
| CN114609736A (en) | Novel rat-bite-preventing bending-resistant optical cable and preparation process thereof | |
| CN209821454U (en) | Butterfly-shaped fireproof optical cable | |
| CN208488577U (en) | A kind of novel flame-retardant cracking resistance optical cable | |
| KR20220138307A (en) | Optical cable | |
| CN208141007U (en) | A kind of stainless steel compound belt armouring, stainless steel wire winding squirrel-preventing bite the optical cable stung | |
| CN218728240U (en) | Large-core-number anti-rodent compression-resistant optical cable | |
| CN210803820U (en) | Novel layer-stranding sheath steel belt armored optical cable | |
| CN206096567U (en) | Presort a type submarine fiber cable | |
| CN210835372U (en) | High-strength side-pressure-resistant stainless steel armored optical cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |