CN105607205A - High-performance optical cable and manufacturing method thereof - Google Patents
High-performance optical cable and manufacturing method thereof Download PDFInfo
- Publication number
- CN105607205A CN105607205A CN201610180872.XA CN201610180872A CN105607205A CN 105607205 A CN105607205 A CN 105607205A CN 201610180872 A CN201610180872 A CN 201610180872A CN 105607205 A CN105607205 A CN 105607205A
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- China
- Prior art keywords
- optical cable
- stranded
- reinforcing element
- loose sleeve
- sleeve pipe
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Classifications
-
- 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
-
- 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
-
- 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
- G02B6/4434—Central member to take up tensile loads
-
- 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
- G02B6/4479—Manufacturing methods of optical cables
Abstract
The invention relates to the field of communication optical cables, and specifically relates to a high-performance optical cable and a manufacturing method thereof. The optical cable comprises a central reinforcing element, a plurality of loose tubes are wound around the central reinforcing element, a plurality of colored optical fibers are arranged in each loose tube, a binding yarn is arranged outside the plurality of loose tubes, a protective layer is extruded outside the binding yarn, a sheath is arranged outside the protective layer, the plurality of loose tubes are twisted onto the central reinforcing element in a two-way spiral mode, and the positive and negative loose tubes in two-way spiral twisting only wind one circle of the central reinforcing element. The tensile property of the optical cable is realized by strengthening of bent sections at turning points during SZ twisting, so the more the turning points within the unit length are, the larger the free elongation value is. Under the extreme reversing condition of a motor, the less the one-way twisted circles are, the more the turning points are, and the stronger the tensile property is.
Description
Technical field
The present invention relates to communications optical cable field, be specifically related to a kind of high-performance optical cable and manufacture method thereof.
Background technology
At present countries in the world are for communicating by letter and the optical cable of communication, there is diversified structure, but the most a kind of loose jacketed stranded optical cable structure, wherein being used for the optical fiber free state of transmitting optical signal is placed in the hollow bushing of PBT material, be referred to as loose sleeve pipe, in order to ensure the long term life of optical fiber, while requiring optical fiber in optical cable, under any circumstance optical fiber, all in free state, can not bear any external force. Must be wrapped in central strength member with certain screw pitch at the loose sleeve pipe around central strength member, make optical cable there is in use enough bending properties. Pine sleeve pipe has the stranded and stranded two kinds of methods of bidirectional screw of one-way spiral around the stranded mode of central strength member, and one-way spiral is stranded to be used hardly because efficiency is low. In industry, be substantially all to adopt the stranded this method of bidirectional screw, SZ is stranded. Existing lay configuration normally 5～12 loose sleeve pipes is passed through the stranded equipment of SZ, the stranded rear bundle yarn stranding of forward and reverse multi-turn, the unidirectional stranded number of turns: 6～20 π. But this form also distinct disadvantage comparatively of shortcoming: first stranded equipment is very long larger on loose casing fiber optic impact, and energy consumption is larger, and production operation is loaded down with trivial details. Be limited to the stranded feature of structure multi-turn, motor self rotating frequency limited system, speed of production room for promotion is limited. Secondly the unidirectional stranded number of turns is too much, and the stranded turning point of unit length very little, affects structure remaining long, causes the overall tensile property of cable to reduce.
If number of patent application is N201120417896.5, the applying date is 2011-10-28, name is called the utility model patent of " a kind of outdoor optical cable for communication containing stainless loose sleeve pipe ", its technical scheme is as follows: the utility model relates to a kind of outdoor optical cable for communication containing stainless loose sleeve pipe, it is by cable core, be wrapped in the sheath composition outside cable core, cable core is by the reinforcement that is positioned at optical cable center, mutually stranded multifiber unit and at least one gasket for packing that is arranged on reinforcement periphery, be wrapped in the bundle layer outside multifiber unit and at least one gasket for packing, be filled in the cable cream composition that blocks water of pricking between layer and multifiber unit, fiber unit is by multifiber, be coated on the stainless loose sleeve pipe outside multifiber and be filled in the fine cream composition between stainless loose sleeve pipe and multifiber.
Although above-mentioned patent is improved the dependency structure of optical cable, the canoe of loose sleeve pipe and central strength member is not proposed to new conception, so still can there are the problems referred to above of the prior art.
Summary of the invention
The problems referred to above that exist for solving existing optical cable, now a kind of high-performance optical cable of special proposition.
For realizing above-mentioned technical purpose, technical scheme of the present invention is as follows:
A kind of high-performance optical cable; it is characterized in that: comprise center reinforcing element; the surrounding of described center reinforcing element is wound with many loose sleeve pipes; in every loose sleeve pipe, establish and only have many colored optical fibers; many loose sleeve pipes are jointly provided with and tie up yarn outward; the described yarn of tying up is extruded matcoveredn outward; described protective layer is outside equipped with sheath; many loose sleeve pipe bidirectional screws are stranded on the reinforcing element of described center, and the stranded middle forward of bidirectional screw is only wound around described center reinforcing element one circle with the loose sleeve pipe oppositely.
Described protective layer is plastic layer.
Described center reinforcing element is steel wire or nonmetal wire rod.
The Young's modulus of described center reinforcing element is generally at 19000Kg/cm2To 21000Kgcm2。
Many loose sleeve pipes are divided at least two groups, and two groups of pine sleeve pipes are wrapped in respectively on the reinforcing element of center.
Many loose sleeve pipes are one group, and one group of pine sleeve pipe is wrapped on the reinforcing element of center jointly.
Described protective layer is metal tape.
A kind of manufacture method of high-performance optical cable, it is characterized in that: first many loose sleeve pipes are wrapped in to center reinforcing element around by forward and reverse stranded mode, and all only stranded one enclose (first stranded positive 360 degree when each forward and each reverse stranding, stranded negative 360 degree again), to be bundled into cable core through forward and reverse all loose sleeve pipe after stranded with tying up yarn again, described cable core is indulged bag metal tape outward again, and then extrusion molding forms sheath, finally becomes optical cable finished product.
Cable core is outer adopts different safeguard measures according to different application scenarios, and during as pipeline laying, at cable core vertical alclad plastic composite strip outward, then extrusion molding becomes optical cable finished product.
Pine sleeve pipe is when stranded, and twisting pitch is 500～1000mm(± 2%), the unidirectional stranded number of turns: 2 π. Twisting pitch refers to that rotation is wound around the helix length after a circle.
The quantity of described loose sleeve pipe is 5～12.
Advantage of the present invention:
1, the stretch-proof strain property of optical cable is to be determined by intensity and the tensile stress of central strength member, and GB specifies that the elongation strain of optical cable must not be greater than 1 ‰. The elongation strain of optical fiber must not be greater than 0.1 ‰ on this basis. In order to meet above requirement, in the time that cable stretches, the loose sleeve pipe that is wrapped in reinforcing element surface, center must be able to freely extend, the SZ of prior art is stranded drags by servomotor that strand is positive and negative transfers realization, owing to being subject to the restriction of motor positive and inverse frequency, in the unit interval, motor commutation response has the limit. In existing technical staff's idea, be all that the number of turns of thinking stranded is more, the tensile property of cable is stronger, thus in order to enhance productivity, only have the stranded number of turns of increasing, therefore existing SZ stranded in each unidirectional stranded number of turns general control in 6～20 π scopes. And the proposition of novelty of the present invention the pull resistance of cable be to be decided by the number of turning point, under the certain prerequisite of total stranded number of turns, turning point is more, the pull resistance of cable is just stronger, and traditional mode exactly causes the turning point of unit length to reduce, the tensile property of cable can weaken on the contrary. And the bending section at the turning point place of the pull resistance that the application proposes when being stranded by SZ stretches to realize, therefore in unit length, turning point is more, and the free stretch value that can provide is just larger. Under motor limit condition of commutation, each unidirectional stranded number of turns is fewer, and turning point is more, and pull resistance is just stronger.
2, the present invention can reach maximization by stranded turning point in unit length, has greatly increased the loose sleeve pipe in unit length remaining long, and in cable core drawing process, the overall tensile property of cable is improved greatly. And can greatly improve the stranded efficiency of optical cable, improve corresponding production efficiency and reduce labor strength, also optimize the structure of cable, improve stretch-proof strain property. And corresponding stranded device length size shortens greatly, reduce the floor space of production line, save space cost.
3, the present invention is not subject to motor commutation frequency limitation, can increase substantially production efficiency.
4, novel lay configuration of the present invention, in unit length, stranded turning point can reach maximization, has greatly increased the loose sleeve pipe in unit length remaining long, and in cable core drawing process, the overall tensile property of cable is improved greatly.
Brief description of the drawings
Fig. 1 is the positive cross section of optical cable of the present invention structural representation.
Fig. 2 is thisInventionSide cross-section structural representation, in figure, the solid line part of loose sleeve pipe is that forward is stranded, and dotted portion is reverse stranding, and stranded in the same way loose sleeve pipe centre position is turning point.
In accompanying drawing:
Center reinforcing element 1, loose sleeve pipe 2, ties up yarn 3, protective layer 4, sheath 5, turning point 6.
Detailed description of the invention
Embodiment 1
A kind of high-performance optical cable; comprise center reinforcing element; the surrounding of described center reinforcing element is wound with many loose sleeve pipes; in every loose sleeve pipe, establish and only have many colored optical fibers; many loose sleeve pipes are jointly provided with and tie up yarn outward, described in tie up yarn and extrude matcoveredn outward, described protective layer is outside equipped with sheath; many loose sleeve pipe bidirectional screws are stranded on the reinforcing element of described center, and the stranded middle forward of bidirectional screw is only wound around described center reinforcing element one circle with the loose sleeve pipe oppositely.
Described protective layer is plastic layer. Described center reinforcing element is steel wire or nonmetal wire rod.
The Young's modulus of described center reinforcing element is generally at 19000Kg/cm2To 21000Kgcm2. Many loose sleeve pipes are divided at least two groups, and two groups of pine sleeve pipes are wrapped in respectively on the reinforcing element of center. Many loose sleeve pipes are one group, and one group of pine sleeve pipe is wrapped on the reinforcing element of center jointly. Described protective layer is metal tape.
The present invention can reach maximization by stranded turning point in unit length, has greatly increased the loose sleeve pipe in unit length remaining long, and in cable core drawing process, the overall tensile property of cable is improved greatly. And can greatly improve the stranded efficiency of optical cable, improve corresponding production efficiency and reduce labor strength, also optimize the structure of cable, improve stretch-proof strain property. And corresponding stranded device length size shortens greatly, reduce the floor space of production line, save space cost.
Embodiment 2
A kind of manufacture method of high-performance optical cable, first many loose sleeve pipes are wrapped in to center reinforcing element around by forward and reverse stranded mode, and all only stranded one enclose when each forward and each reverse stranding, i.e. first stranded positive 360 degree, stranded negative 360 degree again, then will be bundled into cable core through forward and reverse all loose sleeve pipe after stranded with tying up yarn, described cable core is indulged alclad plastic composite strip outward again, then extrusion molding forms sheath, finally becomes optical cable finished product.
Cable core is outer adopts different safeguard measures according to different application scenarios, and during as pipeline laying, at cable core vertical alclad plastic composite strip outward, then extrusion molding becomes optical cable finished product.
Pine sleeve pipe is when stranded, and twisting pitch is 500～1000mm, and error is ± 2%, the unidirectional stranded number of turns: 2 π. Twisting pitch refers to that rotation is wound around the helix length after a circle.
The quantity of described loose sleeve pipe is 5～12.
The stretch-proof strain property of optical cable is to be determined by the intensity of central strength member and tensile stress, and GB specifies that the elongation strain of optical cable must not be greater than 1 ‰. The elongation strain of optical fiber must not be greater than 0.1 ‰ on this basis. In order to meet above requirement, in the time that cable stretches, the loose sleeve pipe that is wrapped in reinforcing element surface, center must be able to freely extend, the SZ of prior art is stranded drags by servomotor that strand is positive and negative transfers realization, owing to being subject to the restriction of motor positive and inverse frequency, in the unit interval, motor commutation response has the limit. In existing technical staff's idea, be all that the number of turns of thinking stranded is more, the tensile property of cable is stronger, thus in order to enhance productivity, only have the stranded number of turns of increasing, therefore existing SZ stranded in each unidirectional stranded number of turns general control in 6～20 π scopes. And the proposition of novelty of the present invention the pull resistance of cable be to be decided by the number of turning point, under the certain prerequisite of total stranded number of turns, turning point is more, the pull resistance of cable is just stronger, and traditional mode exactly causes the turning point of unit length to reduce, the tensile property of cable can weaken on the contrary. And the bending section at the turning point place of the pull resistance that the application proposes when being stranded by SZ stretches to realize, therefore in unit length, turning point is more, and the free stretch value that can provide is just larger. Under motor limit condition of commutation, each unidirectional stranded number of turns is fewer, and turning point is more, and pull resistance is just stronger.
The present invention is not subject to motor commutation frequency limitation, can increase substantially production efficiency.
Novel lay configuration of the present invention, in unit length, stranded turning point can reach maximization, has greatly increased the loose sleeve pipe in unit length remaining long, and in cable core drawing process, the overall tensile property of cable is improved greatly.
The innovative point of the application's maximum is for having found in stranding process, and the number of the stranded number of turns is not to play a crucial role to cable machinery performance and environmental performance, thereby has overcome the usual thinking of this area. What applicant found above-mentioned two performances to play a crucial role under study for action is the quantity of turning point in stranded process. As long as therefore have the turning point of equal number in the optical cable of same length, the machinery of its optical cable and environmental performance will reach better effect. Advantage of the present invention is in the optical cable of same length, can increase twisting pitch, thereby enhance productivity.
Embodiment 3
A kind of high-performance optical cable; comprise center reinforcing element; the surrounding of described center reinforcing element is wound with many loose sleeve pipes; in every loose sleeve pipe, establish and only have many colored optical fibers; many loose sleeve pipes are jointly provided with and tie up yarn outward, described in tie up yarn and extrude matcoveredn outward, described protective layer is outside equipped with sheath; many loose sleeve pipe bidirectional screws are stranded on the reinforcing element of described center, and the stranded middle forward of bidirectional screw is only wound around described center reinforcing element one circle with the loose sleeve pipe oppositely.
A kind of manufacture method of high-performance optical cable, first many loose sleeve pipes are wrapped in to center reinforcing element around by forward and reverse stranded mode, and all only stranded one enclose when each forward and each reverse stranding, i.e. first stranded positive 360 degree, stranded negative 360 degree again, then will be bundled into cable core through forward and reverse all loose sleeve pipe after stranded with tying up yarn, described cable core is indulged alclad plastic composite strip outward again, then extrusion molding forms sheath, finally becomes optical cable finished product.
Embodiment 4
A kind of high-performance optical cable; comprise center reinforcing element; the surrounding of described center reinforcing element is wound with many loose sleeve pipes; in every loose sleeve pipe, establish and only have many colored optical fibers; many loose sleeve pipes are jointly provided with and tie up yarn outward, described in tie up yarn and extrude matcoveredn outward, described protective layer is outside equipped with sheath; many loose sleeve pipe bidirectional screws are stranded on the reinforcing element of described center, and the stranded middle forward of bidirectional screw is only wound around described center reinforcing element one circle with the loose sleeve pipe oppositely.
Described protective layer is plastic layer. Described center reinforcing element is steel wire or nonmetal wire rod.
The Young's modulus of described center reinforcing element is generally at 19000Kg/cm2To 21000Kgcm2. Many loose sleeve pipes are divided at least two groups, and two groups of pine sleeve pipes are wrapped in respectively on the reinforcing element of center. Many loose sleeve pipes are one group, and one group of pine sleeve pipe is wrapped on the reinforcing element of center jointly. Described protective layer is metal tape.
A kind of manufacture method of high-performance optical cable, first many loose sleeve pipes are wrapped in to center reinforcing element around by forward and reverse stranded mode, and all only stranded one enclose when each forward and each reverse stranding, i.e. first stranded positive 360 degree, stranded negative 360 degree again, then will be bundled into cable core through forward and reverse all loose sleeve pipe after stranded with tying up yarn, described cable core is indulged alclad plastic composite strip outward again, then extrusion molding forms sheath, finally becomes optical cable finished product.
Cable core is outer adopts different safeguard measures according to different application scenarios, and during as pipeline laying, at cable core vertical alclad plastic composite strip outward, then extrusion molding becomes optical cable finished product.
Pine sleeve pipe is when stranded, and twisting pitch is 500～1000mm, and error is ± 2%, the unidirectional stranded number of turns: 2 π. Twisting pitch refers to that rotation is wound around the helix length after a circle.
The quantity of described loose sleeve pipe is 5～12.
Claims (10)
1. a high-performance optical cable; it is characterized in that: comprise center reinforcing element; the surrounding of described center reinforcing element is wound with many loose sleeve pipes; in every loose sleeve pipe, establish and only have many colored optical fibers; many loose sleeve pipes are jointly provided with and tie up yarn outward; the described yarn of tying up is extruded matcoveredn outward; described protective layer is outside equipped with sheath; many loose sleeve pipe bidirectional screws are stranded on the reinforcing element of described center, and the stranded middle forward of bidirectional screw is only wound around described center reinforcing element one circle with the loose sleeve pipe oppositely.
2. a kind of high-performance optical cable according to claim 1, is characterized in that: described protective layer is plastic layer.
3. a kind of high-performance optical cable according to claim 2, is characterized in that: described center reinforcing element is steel wire or nonmetal wire rod.
4. a kind of high-performance optical cable according to claim 3, is characterized in that: the Young's modulus of described center reinforcing element is generally at 19000Kg/cm2To 21000Kgcm2。
5. a kind of high-performance optical cable according to claim 4, is characterized in that: many loose sleeve pipes are divided at least two groups, and two groups of pine sleeve pipes are wrapped in respectively on the reinforcing element of center.
6. a kind of high-performance optical cable according to claim 5, is characterized in that: many loose sleeve pipes are one group, and one group of pine sleeve pipe is wrapped on the reinforcing element of center jointly.
7. a kind of high-performance optical cable according to claim 6, is characterized in that: described protective layer is metal tape.
8. the manufacture method of the manufacture high-performance optical cable as described in claim 1-7 any one, it is characterized in that: first many loose sleeve pipes are wrapped in to center reinforcing element around by forward and reverse stranded mode, and all only stranded one enclose when each forward and each reverse stranding, to be bundled into cable core through forward and reverse all loose sleeve pipe after stranded with tying up yarn again, described cable core is indulged bag metal tape outward again, then extrusion molding forms sheath, finally becomes optical cable finished product.
9. the manufacture method of high-performance optical cable according to claim 8, is characterized in that: loose sleeve pipe is when stranded, and twisting pitch is 500～1000mm(± 2%), the unidirectional stranded number of turns: 2 π.
10. the manufacture method of high-performance optical cable according to claim 9, is characterized in that: the quantity of described loose sleeve pipe is 5～12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610180872.XA CN105607205A (en) | 2016-03-28 | 2016-03-28 | High-performance optical cable and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610180872.XA CN105607205A (en) | 2016-03-28 | 2016-03-28 | High-performance optical cable and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN105607205A true CN105607205A (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610180872.XA Pending CN105607205A (en) | 2016-03-28 | 2016-03-28 | High-performance optical cable and manufacturing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561655A (en) * | 2017-08-25 | 2018-01-09 | 长飞光纤光缆股份有限公司 | A kind of detectable layer-stranding cable |
| CN107797205A (en) * | 2017-11-28 | 2018-03-13 | 胡阳 | A kind of FTTx optical cables |
| CN110058365A (en) * | 2017-03-15 | 2019-07-26 | 杭州富通通信技术股份有限公司 | Multi-core optical fiber beam Loose tube |
| CN111077618A (en) * | 2020-01-21 | 2020-04-28 | 江苏南方通信科技有限公司 | Layer-stranded optical cable sine stranding method |
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| CN201017082Y (en) * | 2006-12-18 | 2008-02-06 | 田小中 | SZ layer twisted type cabling unit |
| CN202362507U (en) * | 2011-10-28 | 2012-08-01 | 江苏七宝光电集团有限公司 | Communication outdoor optical cable comprising stainless steel loose tube |
| CN204044417U (en) * | 2014-09-17 | 2014-12-24 | 长飞光纤光缆股份有限公司 | A kind of Full dry type layer stranded cables |
| CN205103471U (en) * | 2015-11-13 | 2016-03-23 | 汕头高新区奥星光通信设备有限公司 | Take self -supporting 8 font optical cable of sheath designation strip |
| CN205103459U (en) * | 2015-10-30 | 2016-03-23 | 吴华林 | Loose tube layer stranded optical cable |
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2016
- 2016-03-28 CN CN201610180872.XA patent/CN105607205A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201017082Y (en) * | 2006-12-18 | 2008-02-06 | 田小中 | SZ layer twisted type cabling unit |
| CN202362507U (en) * | 2011-10-28 | 2012-08-01 | 江苏七宝光电集团有限公司 | Communication outdoor optical cable comprising stainless steel loose tube |
| CN204044417U (en) * | 2014-09-17 | 2014-12-24 | 长飞光纤光缆股份有限公司 | A kind of Full dry type layer stranded cables |
| CN205103459U (en) * | 2015-10-30 | 2016-03-23 | 吴华林 | Loose tube layer stranded optical cable |
| CN205103471U (en) * | 2015-11-13 | 2016-03-23 | 汕头高新区奥星光通信设备有限公司 | Take self -supporting 8 font optical cable of sheath designation strip |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110058365A (en) * | 2017-03-15 | 2019-07-26 | 杭州富通通信技术股份有限公司 | Multi-core optical fiber beam Loose tube |
| CN110058365B (en) * | 2017-03-15 | 2020-07-03 | 杭州富通通信技术股份有限公司 | Multi-core optical fiber bundle loose tube |
| CN107561655A (en) * | 2017-08-25 | 2018-01-09 | 长飞光纤光缆股份有限公司 | A kind of detectable layer-stranding cable |
| CN107797205A (en) * | 2017-11-28 | 2018-03-13 | 胡阳 | A kind of FTTx optical cables |
| CN111077618A (en) * | 2020-01-21 | 2020-04-28 | 江苏南方通信科技有限公司 | Layer-stranded optical cable sine stranding method |
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Application publication date: 20160525 |
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