CN112255746A - Layer-stranded optical cable with stranded reinforcing part and preparation process - Google Patents
Layer-stranded optical cable with stranded reinforcing part and preparation process Download PDFInfo
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- CN112255746A CN112255746A CN202011228691.2A CN202011228691A CN112255746A CN 112255746 A CN112255746 A CN 112255746A CN 202011228691 A CN202011228691 A CN 202011228691A CN 112255746 A CN112255746 A CN 112255746A
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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
- G02B6/4432—Protective covering with fibre reinforcements
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Abstract
The invention discloses a layer stranded optical cable with stranded reinforcements and a preparation process, relates to the field of optical cables, and solves the problems that the price of the reinforcements wound and bound outside a cable core is relatively high, the outer diameter of the optical cable can be increased after the optical cable is used, and the cost of the optical cable is increased. The optical cable comprises a central reinforcing member (4) arranged in the center of the optical cable, a sleeve (3) and a twisted reinforcing member (5) arranged around the central reinforcing member (4), wherein a cable core is twisted in an hour-hand direction; the preparation process is that a central reinforcing part (41) replacing the central position of the original optical cable is taken as a central reinforcing part (4); two twisted reinforcements (5) replace four filling ropes (51). The layer stranded optical cable obtained by the invention can reach 2000N tensile strength, and if the stranded reinforcing member (5) is not adopted, the strength of the layer stranded optical cable can only meet 1500N tensile strength.
Description
Technical Field
The invention relates to the field of optical cables, in particular to a layer stranded optical cable with stranded reinforcements and a preparation process thereof.
Background
At present, the layer-stranded optical cable is widely applied to the construction of an outdoor communication network. Layer-stranded cables typically employ a central strength member and possibly strength members wrapped around the cable core, with a fiber release sleeve and filler cords stranded around the central strength member to form the cable core.
Generally, the reinforcing part wound and bundled outside the cable core is relatively high in price, the outer diameter of the optical cable can be increased after the optical cable is used, and the cost of the optical cable is increased.
The central reinforcing part is usually made of high-carbon steel wires, which is the design with the highest cost performance, and the strength of the layer-stranded optical cable is improved by increasing the diameter of the central steel wire under the condition that the reinforcing part wound outside the cable core is not adopted.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention provides a layer stranded optical cable with stranded reinforcements and a preparation process, which solve the problems that the price of the reinforcements wound and bundled outside a cable core is relatively high, the outer diameter of the optical cable is increased after the optical cable is used, and the cost of the optical cable is increased.
The invention is realized by the following technical scheme:
a layer stranded fiber optic cable having stranded reinforcement comprising a center strength member, a jacket tube, and stranded reinforcement;
the central strength member is disposed in the center of the cable, and the sleeve and the stranded strength member are disposed around the central strength member.
Further, the central strength member, the sleeve and the stranded strength member are made into a core of a layer stranded optical cable.
Furthermore, the cable core is manufactured by twisting in an hour hand direction, the hour hand direction comprises a clockwise direction and a counterclockwise direction, the cable core is manufactured in the clockwise or counterclockwise twisting direction, the cable core is manufactured in a twisting mode of crossing clockwise and counterclockwise directions in the prior art, and the local or overall tensile strength of the manufactured optical cable is lower than that of the single-hour-direction twisted layer-twisted optical cable.
Further, the stranding pitch of the cable core is in the range of 70-90mm, the preferred stranding pitch is 80mm, and the glass fiber material can be selected as the stranding reinforcing member.
Preferably, sleeve pipe figure is two, has several optic fibre in every sleeve pipe, optic fibre is single mode fiber, adopts 235 ~ 245um single mode fiber, and it is colored respectively: blue, orange, green, brown, gray, white; the outer diameter of the sleeve is 1.8mm, the sleeve is made of PBT (polybutylene terephthalate) serving as a loose sleeve material, and optical fibers and fiber paste are arranged inside the sleeve.
Preferably, the central reinforcing member is made of high-carbon phosphated steel wires with the diameter of 1.4mm, the tensile strength of the steel wires of the central reinforcing member is not lower than 1670MPa, and the tensile modulus is not lower than 190 GPa.
Further, a filler cord is included, wherein a total of five filler cords, stranded reinforcements, and sleeves are included, one being a center reinforcement, the stranded reinforcements and center reinforcement also being used for cable filling.
The number of the sleeves can be 1-4, the central idea of the invention is that the twisted reinforcing parts are not completely used for replacing the filling ropes, the number of the twisted reinforcing parts is also 1-4, and the number of the twisted reinforcing parts is determined according to specific conditions, and the residual filling ropes can be filled with the filling ropes or not.
Preferably:
a. 2 loose tubes, 2 twisted reinforcements, 1 filling rope
b. 1 loose tube, 1 twisted reinforcement and 3 filling ropes
c. 3 loose tubes, 2 twisted reinforcements
d. 4 loose tubes, 1 twisted reinforcement
Further, the steel wire rope comprises an armor and an outer sheath wrapping the outer sides of the central reinforcing member, the sleeve and the stranded reinforcing member.
A preparation process of a layer stranded optical cable with a stranded reinforcing part comprises the following steps of:
first, preparing a center reinforcement and a lay reinforcement;
then, assembling a plurality of stranded reinforcements around the center reinforcement;
and finally, wrapping the armor and the outer sheath on the outer side to obtain the stranded optical cable.
Further, the central reinforcing member is made of high-carbon phosphated steel wires with the diameter of 1.4 mm.
Further, the cable core is twisted in a clockwise spiral twisting mode with the pitch of 80 mm.
The strength and modulus of the reinforcing part determine the tensile strength of the optical cable, and the filling ropes on the periphery of the central reinforcing part are replaced by the twisted reinforcing part under the condition of not changing the outer diameter of the optical cable. Under the condition of the same outer diameter of the optical cable, the tensile strength of the optical cable is improved by adding the stranded reinforcing member.
On the basis of the original general layer stranded structure, namely 1 central reinforcing member and 5 filling ropes, the filling ropes in the general layer stranded structure are replaced by stranded reinforcing members. The invention has the following advantages and beneficial effects:
the layer-stranded optical cable obtained by the invention can meet the condition that the tensile strain of the optical fiber is less than 0.15% under the short-term stress of 2000N-3000N, and the other properties are not influenced; without stranded reinforcement, such layer-stranded cables typically have only a strength that satisfies a fiber tensile strain of less than 0.15% under a short term stress of 1500N.
According to the invention, under the condition of the same outer diameter of the optical cable, the tensile strength of the optical cable is improved by adding the stranded reinforcing member.
The invention replaces the filling ropes at the periphery of the central reinforcing part with the twisted reinforcing part.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a cross-sectional view of a fiber optic cable of the present invention.
Fig. 2 is a cross-sectional view of a typical fiber optic cable.
FIG. 3 is a graph of experimental data for the present invention.
Reference numbers and corresponding part names in the drawings:
1. an optical fiber; 2. armor and outer sheath; 3. a sleeve; 4. a central reinforcement; 41. a central reinforcement; 5. a twisted reinforcement; 51. and (6) filling the ropes.
Detailed Description
Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangements of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive changes, are within the scope of the present invention.
A layer stranded cable having stranded strength members, as shown in fig. 1, includes a center strength member 4, a jacket 3, and stranded strength members 5;
the center strength member 4 is disposed at the center of the cable, and the jacket 3 and the stranded strength members 5 are disposed around the center strength member 4.
Further, the central strength member 4, the sleeve 3 and the stranded strength members 5 make a core of a layer stranded cable.
Furthermore, the cable core is manufactured by twisting in an hour hand direction, the hour hand direction comprises a clockwise direction and a counterclockwise direction, the cable core is manufactured in the clockwise or counterclockwise twisting direction, the cable core is manufactured in a twisting mode of crossing clockwise and counterclockwise directions in the prior art, and the local or overall tensile strength of the manufactured optical cable is lower than that of the single-hour-direction twisted layer-twisted optical cable.
Preferably, the stranding pitch of the cable core is in the range of 70-90mm, preferably the stranding pitch is 80mm, wherein the glass fiber material can be selected as the stranding reinforcing member 5.
Preferably, 3 numbers of sleeve pipes are two, have several optic fibre 1 in every sleeve pipe 3, optic fibre 1 is single mode fiber 1, adopts 235 ~ 252um single mode fiber 1, and it is colored respectively: blue, orange, green, brown, gray, white; the outer diameter of the sleeve 3 is 1.8mm, the sleeve 3 is made of PBT (polybutylene terephthalate) as a loose sleeve 3 material, and the optical fiber 1 and the fiber paste are arranged inside the sleeve 3.
Preferably, the central reinforcing member 4 is made of high-carbon phosphated steel wires with the diameter of 1.4mm, the tensile strength of the steel wires of the central reinforcing member 4 is not lower than 1670MPa, and the tensile modulus is not lower than 190 GPa.
Preferably, the number of the sleeves 3 is 1-4, and the central idea of the present invention is to completely replace the filling rope 51 with the twisted reinforcing members 5, and the number of the twisted reinforcing members 5 is 1-4, and the number of the twisted reinforcing members is determined according to the situation, and the remaining filling rope 51 can be filled with the filling rope 51 or not.
Preferably:
a. 2 loose tubes, 2 twisted reinforcements, 1 filling rope
b. 1 loose tube, 1 twisted reinforcement and 3 filling ropes
c. 3 loose tubes, 2 twisted reinforcements
d. 4 loose tubes, 1 twisted reinforcement
Preferably, it also comprises an armouring and outer sheath 2 wrapped externally outside the central reinforcement 4, the sleeve 3 and the stranded reinforcements 5.
A preparation process of a layer stranded optical cable with a stranded reinforcing part comprises the following steps of:
first, the center reinforcement 4 and the twisted reinforcements 5 are prepared;
then, a plurality of twisted reinforcements 5 are assembled around the center reinforcement 4;
and finally, wrapping the armor and the outer sheath 2 on the outer side to obtain the layer-stranded optical cable.
Preferably, the central strength member 4 is made of high carbon phosphatized steel wires with a diameter of 1.4mm, and further, the cable core is twisted by a clockwise spiral twisting manner with a pitch of 80mm, and the cable core comprises the central strength member 4, the sleeve 3 and the twisted strength member 5 as described above.
The strength and modulus of the strength members determine the tensile strength of the cable, and the present invention replaces the filler cords 51 around the central strength member 41 with stranded strength members 5 without changing the outer diameter of the cable. Under the condition of the same outer diameter of the optical cable, the tensile strength of the optical cable is improved by adding the stranded reinforcing part 5;
a general optical cable, which is shown in a cross-sectional view in fig. 2, uses three filling cords 51 and one central reinforcing member 41, and uses a gauge of 1.8mm in diameter for the filling cords 51 in the optical cable including the conventional filling cords 51 in accordance with the standardized production sales regulations;
as shown in fig. 3, example 1:
the optical cable is a common optical cable without adding a twisted reinforcing part;
example 2:
1 filling rope is replaced by 1 stranded reinforcing part;
example 3:
2 filling ropes are replaced by 2 stranded reinforcing parts;
example 4:
replacing 3 filling ropes with 3 stranded reinforcing parts;
example 5:
replacing 4 filling ropes with 4 stranded reinforcing parts;
from the results of examples 1 to 5, it is found that the layer-stranded optical cable obtained according to the present invention can satisfy the optical fiber tensile strain of less than 0.15% under the short term stress of 2000N to 3000N, and according to examples 2, 3, 4 and 5, the optical fiber tensile strain of less than 0.15% under the short term stress of 1500N can be satisfied only in the conventional layer-stranded optical cable without using the stranded reinforcement instead of the filling cord.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A layer stranded cable with stranded reinforcement comprising a center strength member (4), a jacket tube (3) and a stranded reinforcement member (5);
the central reinforcing member (4) is arranged in the center of the optical cable, and the sleeve (3) and the stranded reinforcing member (5) are arranged around the central reinforcing member (4).
2. A layer stranded cable with stranded strength members according to claim 1, wherein the center strength member (4), the jacket tube (3) and the stranded strength members (5) are formed into a core of the layer stranded cable, the core being stranded while maintaining an hour-hand direction, the hour-hand direction comprising a clockwise direction and a counter-clockwise direction.
3. The layer-stranded optical cable having stranded reinforcements according to claim 2, wherein the stranding pitch of the cable core is in the range of 70-90 mm.
4. The optical cable with stranded reinforcement according to claim 2, wherein there are several optical fibers (1) in the jacket tube (3), the optical fibers (1) being single mode optical fibers (1).
5. A layer stranded cable having stranded reinforcement according to claim 2, wherein the center strength member (4) is a center strength member (4) made of high carbon phosphated steel wire.
6. A layer stranded cable with stranded reinforcement according to claim 3, further comprising a filler cord, wherein the total of five filler cords, stranded reinforcements (5) and jacket tubes (3), said stranded reinforcements (5) and central reinforcement (4) being further used for cable filling.
7. A layer stranded cable with stranded strength members according to claim 1, further comprising an armor and outer jacket (2) wrapped outside the outer side of the central strength member (4), the sleeve (3) and the stranded strength members (5).
8. The process for preparing a layer-stranded optical cable having stranded reinforcement according to any one of claims 1 to 7, wherein:
firstly, preparing a central reinforcement (4) and a twisted reinforcement (5);
then, assembling a plurality of twisted reinforcements (5) around the central reinforcement (4);
and finally, wrapping the armor and the outer sheath (2) on the outer side to obtain the layer-stranded optical cable.
9. Process for the preparation of a layer stranded cable with stranded reinforcement according to claim 8, wherein the central strength member (4) is made of high carbon phosphated steel wire with a diameter of 1.4 mm.
10. The process for preparing a layer-stranded optical cable having stranded reinforcement according to claim 9, wherein the stranding pitch of the cable core is 80 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011228691.2A CN112255746A (en) | 2020-11-06 | 2020-11-06 | Layer-stranded optical cable with stranded reinforcing part and preparation process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011228691.2A CN112255746A (en) | 2020-11-06 | 2020-11-06 | Layer-stranded optical cable with stranded reinforcing part and preparation process |
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| CN112255746A true CN112255746A (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011228691.2A Pending CN112255746A (en) | 2020-11-06 | 2020-11-06 | Layer-stranded optical cable with stranded reinforcing part and preparation process |
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Citations (10)
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|---|---|---|---|---|
| US5230034A (en) * | 1991-09-20 | 1993-07-20 | Bottoms Jack Jr | All dielectric self-supporting fiber optic cable |
| CN101430404A (en) * | 2008-11-06 | 2009-05-13 | 沈群华 | Special-shaped reinforced layer-stranding cable |
| CN204650040U (en) * | 2015-05-11 | 2015-09-16 | 西安西古光通信有限公司 | A kind of three unit enhancement mode ADSS optical cables |
| CN105739041A (en) * | 2016-05-15 | 2016-07-06 | 苏州高精特专信息科技有限公司 | All-dielectric optical cable provided with filling rope and used for electric power or communication, and manufacturing method thereof |
| CN106125240A (en) * | 2016-08-30 | 2016-11-16 | 江苏中天科技股份有限公司 | A kind of layer-twisted type flame-proof cable and the differentiating method of light unit thereof |
| CN107065088A (en) * | 2016-12-14 | 2017-08-18 | 江苏俊知光电通信有限公司 | The oversheath material of rodent-resistant cable and preparation method thereof and the rodent-resistant cable |
| CN107561660A (en) * | 2015-04-23 | 2018-01-09 | 龚利芬 | Layer-stranding cable and preparation method with gasket for packing |
| CN206906643U (en) * | 2017-04-13 | 2018-01-19 | 通鼎互联信息股份有限公司 | Filling type optical cable |
| CN210465782U (en) * | 2019-05-28 | 2020-05-05 | 长飞光纤光缆股份有限公司 | Flexible optical fiber ribbon loose tube optical cable |
| CN111856681A (en) * | 2020-09-04 | 2020-10-30 | 四川天府江东科技有限公司 | Enhanced layer-stranded optical cable and preparation process thereof |
-
2020
- 2020-11-06 CN CN202011228691.2A patent/CN112255746A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5230034A (en) * | 1991-09-20 | 1993-07-20 | Bottoms Jack Jr | All dielectric self-supporting fiber optic cable |
| CN101430404A (en) * | 2008-11-06 | 2009-05-13 | 沈群华 | Special-shaped reinforced layer-stranding cable |
| CN107561660A (en) * | 2015-04-23 | 2018-01-09 | 龚利芬 | Layer-stranding cable and preparation method with gasket for packing |
| CN204650040U (en) * | 2015-05-11 | 2015-09-16 | 西安西古光通信有限公司 | A kind of three unit enhancement mode ADSS optical cables |
| CN105739041A (en) * | 2016-05-15 | 2016-07-06 | 苏州高精特专信息科技有限公司 | All-dielectric optical cable provided with filling rope and used for electric power or communication, and manufacturing method thereof |
| CN106125240A (en) * | 2016-08-30 | 2016-11-16 | 江苏中天科技股份有限公司 | A kind of layer-twisted type flame-proof cable and the differentiating method of light unit thereof |
| CN107065088A (en) * | 2016-12-14 | 2017-08-18 | 江苏俊知光电通信有限公司 | The oversheath material of rodent-resistant cable and preparation method thereof and the rodent-resistant cable |
| CN206906643U (en) * | 2017-04-13 | 2018-01-19 | 通鼎互联信息股份有限公司 | Filling type optical cable |
| CN210465782U (en) * | 2019-05-28 | 2020-05-05 | 长飞光纤光缆股份有限公司 | Flexible optical fiber ribbon loose tube optical cable |
| CN111856681A (en) * | 2020-09-04 | 2020-10-30 | 四川天府江东科技有限公司 | Enhanced layer-stranded optical cable and preparation process thereof |
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Application publication date: 20210122 |
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| RJ01 | Rejection of invention patent application after publication |