CN113341521B - Framework type mixed optical cable - Google Patents
Framework type mixed optical cable Download PDFInfo
- Publication number
- CN113341521B CN113341521B CN202110743008.7A CN202110743008A CN113341521B CN 113341521 B CN113341521 B CN 113341521B CN 202110743008 A CN202110743008 A CN 202110743008A CN 113341521 B CN113341521 B CN 113341521B
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- optical fiber
- skeleton
- optical
- bonded
- shaped
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4407—Optical cables with internal fluted support member
- G02B6/4408—Groove structures in support members to decrease or harmonise transmission losses in ribbon cables
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4407—Optical cables with internal fluted support member
- G02B6/4409—Optical cables with internal fluted support member for ribbons
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
Abstract
The invention relates to a skeleton type hybrid optical cable which comprises a skeleton type cable core and an outer sheath, wherein the skeleton type cable core comprises a skeleton, skeleton grooves extending along the axial direction are formed in the circumference of the skeleton at intervals, optical fiber ribbons are laid in part of the skeleton grooves in the skeleton grooves, and optical fibers are laid in part of the skeleton grooves to form the hybrid optical cable. According to the invention, the optical fiber ribbon and the separate optical fiber are arranged in the framework simultaneously, so that the separate optical fiber in the optical cable or the optical fiber ribbon can be directly used for splicing and matching with the original laid optical cable and the optical fiber distribution frame when branching is needed in construction, the trouble of stripping the optical fiber ribbon is avoided, the branching and splicing are flexible and convenient, and the cost of laying the optical cable can be reduced; the invention adopts the skeleton groove which is arranged in a longitudinal straight line, and the skeleton groove is internally provided with the indirect bonding optical fiber ribbon and the loose optical fiber, so that the skeleton does not need to be twisted when the optical fiber ribbon and the optical fiber groove are arranged in the process of manufacturing the skeleton type cable core, the manufacturing process and the equipment of the cable core are greatly simplified, and the production speed and the efficiency of the skeleton type optical cable are greatly improved.
Description
Technical Field
The invention relates to a skeleton type hybrid optical cable for an optical transmission line of an optical fiber communication network, belonging to the technical field of optical communication transmission.
Background
The skeleton type optical cable is generally laid with optical fiber ribbons which have the characteristics of large fiber capacity and high fusion efficiency, however, the skeleton type optical cable is poor in flexibility of use due to the fact that only the optical fiber ribbons are placed, in actual construction, when the skeleton type optical cable is connected with an original laid optical cable or an optical fiber distribution frame (ODF frame), branching and separated optical fibers need to be connected, the optical cable is mostly cut off, and due to the fact that the branching and the separated optical fiber are both the optical fiber ribbons, the trouble is brought to connection construction. On the other hand, the cable core of the skeleton-type optical cable is generally composed of a skeleton and an optical fiber ribbon arranged in a skeleton groove, in order to prevent the optical fiber ribbon from being stressed and ensure the bending resistance of the optical fiber ribbon, the skeleton groove on the skeleton mostly adopts a spiral twisting structure, namely the skeleton groove rotates along the circumferential direction at a certain pitch, the skeleton needs to continuously rotate while being pulled forwards during cabling processing, and the optical fiber ribbon conveniently enters the skeleton groove in a linear paying-off mode. Therefore, production equipment, particularly a framework take-up and pay-off rack is huge and heavy, the rotating speed of the framework is limited, the production efficiency of the optical cable is influenced, meanwhile, the stress state of the matrix side fibers of the optical fiber ribbon is also influenced by the spiral torsion state after the optical fiber ribbon enters the groove, the control difficulty of the optical fiber ribbon entering groove process is high, and the optical cable with larger core number is difficult to produce by adopting 12-24 core optical fiber ribbons.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a framework type hybrid optical cable which is flexible and convenient in branching and connection.
The technical scheme adopted by the invention for solving the problems is as follows: the composite optical cable comprises a skeleton type cable core and an outer sheath, wherein the skeleton type cable core comprises a skeleton, and skeleton grooves extending along the axial direction are formed in the skeleton at intervals in the circumferential direction.
According to the scheme, the radial section of part of the framework grooves is rectangular or U-shaped, optical fiber ribbons are laid in the rectangular or U-shaped framework grooves, and 2-12 rectangular or U-shaped framework grooves are arranged at intervals along the circumferential direction; the radial section of part of the skeleton grooves is preferably arc-shaped or C-shaped, optical fibers are laid in the preferably arc-shaped or C-shaped skeleton grooves, and 1-6 optimal arc-shaped or C-shaped skeleton grooves are arranged at intervals along the circumferential direction.
According to the scheme, 1-12 optical fiber ribbons are laid in each rectangular or U-shaped framework groove, and the number of optical fiber cores of each optical fiber ribbon is 4-24; loose tubes for optical fibers or sleeved optical fibers are laid in the optimal arc-shaped or C-shaped framework grooves, 1-6 loose tubes are laid in each optimal arc-shaped or C-shaped framework groove, and 1-12 optical fibers with different colors are sleeved in each loose tube.
According to the scheme, the skeleton groove extends linearly along the axial direction to form a straight groove, the optical fiber ribbon is a discontinuous bonding optical fiber ribbon, and the non-bonding section optical fiber of the discontinuous bonding optical fiber ribbon is in a bending, overlapping and loose shape; the optical fibers are laid in the framework groove or the loose tube in a bending loose state, and the loose tube is laid in the framework groove in a twisted state.
According to the scheme, the discontinuous bonding optical fiber ribbon comprises optical fibers which are arranged in parallel, the optical fibers which are arranged in parallel are discontinuously bonded into a ribbon along the longitudinal direction to form a bonding section and a non-bonding section, and the optical fibers at the bonding section are closely arranged in parallel.
According to the scheme, the bonding section optical fiber is bonded by 2 cores or multiple cores, and the bonding sections are arranged in a staggered mode along the transverse direction.
According to the scheme, the length of the bonding section in the discontinuously bonded optical fiber ribbon is 5-50 mm, the bonding section is formed by curing the resin bonded optical fiber, and the length of the non-bonding section is 30-150 mm.
According to the scheme, the optical fiber is a single coated optical fiber or a single tight-sleeved optical fiber.
According to the scheme, the skeleton type cable core is coated with the water-resistant layer, the water-resistant layer is coated with the armor layer, and the armor layer is coated with the outer sheath.
The invention has the beneficial effects that: 1. by arranging the optical fiber ribbon and the separate optical fiber in the framework, the separate optical fiber in the optical cable or the optical fiber ribbon can be directly used for splicing and matching with the original laid optical cable and an optical fiber distribution frame (ODF frame) when branching is needed in construction, the trouble of stripping the optical fiber ribbon is avoided, and the branching is flexible and convenient to splice; 2. the advantages of good strength, large fiber capacity, convenience in branching and the like of the framework type optical cable are reserved, the optical cable does not need to be cut off during branching and connection, windows are only needed to be opened at corresponding positions, convenience is brought to optical cable construction in a complex state, and the cost of laying the optical cable can be reduced; 3. the framework grooves which are longitudinally and linearly formed are adopted, and the indirect bonding optical fiber ribbons and loose optical fibers are arranged in the framework grooves, so that the framework is linearly wound and unwound without torsion when the optical fiber ribbons and the optical fibers are arranged in the grooves during the manufacturing of the framework type cable core, that is, a huge and heavy framework winding and unwinding frame is not required to rotate, the manufacturing process and equipment of the cable core are greatly simplified, and the production speed and the production efficiency of the framework type optical cable are greatly improved; 4. the optical fiber ribbon is discontinuously bonded, the optical fiber at the non-bonded section of the discontinuously bonded optical fiber ribbon is in a bent, overlapped and loose shape, a certain stretching allowance exists, and the optical fiber ribbon has good stretching and twisting performance, the non-bonded section of the optical fiber can be fully stretched without stress when the optical fiber is pulled and bent, and the optical fiber at the bent and loose shape can not be stressed, so that the stability of the transmission performance of the optical fiber is ensured; 5. the optical fiber ribbon is arranged in the framework groove formed in the longitudinal straight line, so that the twisting state is avoided, the stress state of matrix side fibers when the laminated optical fiber ribbon is subjected to groove entering is favorably improved, the control difficulty of the optical fiber ribbon groove entering process is reduced, the 12-24 core optical fiber ribbon can be used for the framework optical cable, and the optical fiber capacity of the framework optical cable can be effectively increased.
Drawings
FIG. 1 is a radial cross-sectional block diagram of one embodiment of the present invention.
Fig. 2 is a schematic diagram of a discontinuously bonded fiber optic ribbon according to one embodiment of the present invention.
Fig. 3 is a side view schematic diagram of a discontinuously bonded fiber optic ribbon according to one embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
One embodiment of the invention is shown in fig. 1-3, and comprises a skeleton-type cable core and an outer sheath 10, wherein the skeleton-type cable core comprises a skeleton 1, a reinforcing member 5 is arranged in the middle of the skeleton, the reinforcing member is a steel wire or aramid yarn, skeleton grooves extending along the axial direction are formed in the skeleton at intervals in the circumferential direction, the number of the skeleton grooves is 6, the radial cross sections of 4 skeleton grooves are rectangular, an optical fiber ribbon is laid in a rectangular skeleton groove 7, the radial cross sections of 2 skeleton grooves are preferably arc-shaped, and optical fibers are laid in a frame groove 9 in the shape of the preferably arc; the rectangular framework grooves and the U-shaped framework grooves are symmetrically distributed along the circumferential direction; the rectangular framework groove and the major arc-shaped framework groove extend along an axial straight line to form a straight groove, the optical fiber ribbons 3 laid in the rectangular framework groove are discontinuous bonding optical fiber ribbons, the discontinuous bonding optical fiber ribbons comprise optical fibers 11 which are arranged in parallel, the optical fibers arranged in parallel are discontinuously bonded into ribbons along the longitudinal direction to form a bonding section and a non-bonding section, the optical fibers in the bonding section are closely arranged in parallel, the bonding section is formed by bonding the optical fibers with acrylic resin 12 and curing, the optical fibers in the bonding section are bonded by 2 cores, the bonding section is arranged in a staggered mode along the transverse direction, the length of the bonding section is 30mm, the optical fibers in the non-bonding section are in a bending, overlapping and loose shape, the length of the non-bonding section is 100mm, the number of the cores of each discontinuous bonding section is 6, and the optical fiber ribbons are stacked in the framework groove along the radial direction. The non-bonding section of the discontinuously-bonded optical fiber ribbon is in a bent, overlapped and loose shape; the optical fibers 8 laid in the major arc-shaped framework groove are in a bending loose shape, surplus length is left, the optical fibers are 12 optical fibers with different colors, and a single optical fiber is tightly sleeved with the optical fibers to form the framework type mixed optical cable core. The skeleton type cable core is coated with a water-blocking layer 2, the water-blocking layer is composed of water-blocking yarns or water-blocking tapes, a metal armor layer 6 is coated outside the water-blocking layer, the metal armor layer is composed of longitudinally-coated aluminum tapes, and an outer sheath 6 is coated outside the armor layer. And a water-resistant layer is coated outside the water-resistant layer, an armor layer is coated outside the water-resistant layer, an outer sheath 10 is coated outside the armor layer, the outer sheath is a PE outer sheath, and a tearing rope 4 can be arranged in the outer sheath to form the framework type mixed optical cable with a full-dry structure.
Claims (7)
1. A skeleton type mixed optical cable comprises a skeleton type cable core and an outer sheath, wherein the skeleton type cable core comprises a skeleton, skeleton grooves extending along the axial direction are formed in the skeleton at intervals in the circumferential direction, and the skeleton type mixed optical cable is characterized in that optical fiber ribbons are laid in part of the skeleton grooves in the skeleton grooves, and optical fibers are laid in part of the skeleton grooves to form the mixed optical cable; the radial cross section of part of the framework grooves is rectangular or U-shaped, optical fiber ribbons are laid in the rectangular or U-shaped framework grooves, and 2-12 rectangular or U-shaped framework grooves are arranged at intervals along the circumferential direction; the radial section of the partial framework grooves is preferably arc-shaped or C-shaped, optical fibers are laid in the preferably arc-shaped or C-shaped framework grooves, and 1-6 optimal arc-shaped or C-shaped framework grooves are arranged at intervals along the circumferential direction; 1-12 optical fiber ribbons are laid in each rectangular or U-shaped framework groove, and the number of optical fiber cores of each optical fiber ribbon is 4-24; the preferred arc-shaped or C-shaped framework groove is internally provided with an optical fiber or a loose tube sleeved with the optical fiber; the skeleton groove extends along the axial direction to form a straight groove, the optical fiber ribbon is discontinuously bonded, and the non-bonded section of the discontinuously bonded optical fiber ribbon is in a bent, overlapped and loose shape; the optical fibers are laid in the framework groove or the loose tube in a bending loose state, and the loose tube is laid in the framework groove in a twisted state.
2. The skeletal hybrid optical cable according to claim 1, wherein 1 to 6 loose tubes are laid in each major arc-shaped or C-shaped skeletal slot, and 1 to 12 optical fibers with different colors are sleeved in each loose tube.
3. The skeletal hybrid cable of claim 1, wherein the intermittently bonded fiber optic ribbons comprise parallel arrays of optical fibers intermittently bonded in a longitudinal direction to form bonded segments and unbonded segments, wherein the bonded segments are arranged in closely parallel relationship.
4. The skeletal hybrid fiber cable of claim 3, wherein the bonded segment fibers are 2-core or multi-core bonded and the bonded segments are staggered in the transverse direction.
5. A skeletal hybrid optical cable according to claim 3 or 4, wherein the intermittently bonded optical fiber ribbons have a bonded section length of 5 to 50mm, the bonded section is formed by curing a resin-bonded optical fiber, and the unbonded section length is 30 to 150 mm.
6. A skeletal hybrid optical cable according to claim 1 or 2, wherein the optical fiber is a single coated optical fiber or a single tight-buffered optical fiber.
7. A skeletal hybrid optical cable according to claim 1 or 2, wherein the skeletal cable core is coated with a water-blocking layer, which is coated with an armor layer, and the armor layer is coated with an outer sheath.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110496459 | 2021-05-07 | ||
| CN2021104964595 | 2021-05-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113341521A CN113341521A (en) | 2021-09-03 |
| CN113341521B true CN113341521B (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110743008.7A Active CN113341521B (en) | 2021-05-07 | 2021-07-01 | Framework type mixed optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113341521B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113960729B (en) * | 2021-10-18 | 2022-07-08 | 长飞光纤光缆股份有限公司 | U-shaped layer stranded framework ribbon optical cable and groove entering device thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003195130A (en) * | 2001-12-26 | 2003-07-09 | Furukawa Electric Co Ltd:The | Optical fiber cable |
| CN102692687A (en) * | 2012-06-01 | 2012-09-26 | 烽火通信科技股份有限公司 | Skeleton fiber bundle optical cable with semicircular skeleton grooves |
| JP6139264B2 (en) * | 2013-05-22 | 2017-05-31 | 住友電気工業株式会社 | Optical fiber ribbon and optical cable |
| CN104849824A (en) * | 2015-06-15 | 2015-08-19 | 长飞光纤光缆股份有限公司 | Full-dry nonmetal self-supporting skeleton-type optical cable |
| CN209947522U (en) * | 2019-04-22 | 2020-01-14 | 长飞光纤光缆股份有限公司 | Skeleton type photoelectric composite optical cable |
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2021
- 2021-07-01 CN CN202110743008.7A patent/CN113341521B/en active Active
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| Publication number | Publication date |
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| CN113341521A (en) | 2021-09-03 |
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Effective date of registration: 20220621 Address after: 430073 No.9, Guanggu Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: YANGTZE OPTICAL FIBRE AND CABLE JOINT STOCK Ltd. Patentee after: Sichuan Lefei Photoelectric Technology Co., Ltd Address before: 430073 Optics Valley Avenue, East Lake New Technology Development Zone, Wuhan, Hubei, 9 Patentee before: YANGTZE OPTICAL FIBRE AND CABLE JOINT STOCK Ltd. |