CN101706602A - Special and reinforced central tube type optical fiber cable - Google Patents
Special and reinforced central tube type optical fiber cable Download PDFInfo
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- CN101706602A CN101706602A CN200910206144A CN200910206144A CN101706602A CN 101706602 A CN101706602 A CN 101706602A CN 200910206144 A CN200910206144 A CN 200910206144A CN 200910206144 A CN200910206144 A CN 200910206144A CN 101706602 A CN101706602 A CN 101706602A
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Abstract
The invention relates to the technical field of optical fiber cables, in particular to a special and reinforced central tube type optical fiber cable, which at least comprises a central loose sleeve (2), a moisture barrier layer (4) coated outside the loose sleeve (2), a protective layer (5) coated outside the moisture barrier layer (4), a sheath layer (6) coated outside the protective layer (5), and a plurality of optical fibers (11) and reinforcements positioned in the loose sleeve (2). The special and reinforced central tube type optical fiber cable is characterized in that: the outer edge of the sheath layer (6) is provided with at least two sections of disconnected arcs which are the same in radius, and the circle centers of the arcs coincide with each other and also coincide with the circle center of the loose sleeve (2); a protruding body protruding outside the arc is arranged between adjacent arcs and the outer edge of the protruding body is connected with the adjacent arcs; the reinforcements (3) are arranged in the protruding body; and the protruding body and the sheath layer (6) are integrated. The special and reinforced central tube type optical fiber cable solves the problem of stripping the optical fiber cable, saves cost and has the advantages of material saving and more convenient stripping.
Description
Proposing the present patent application on the same day, the applicant has proposed utility application simultaneously.
Technical field
The present invention relates to the optical fiber cable technical field, particularly a kind of reinforcement is not the central beam tube type optical cable that places in circle or the oval sheath.
Background technology
Stipulated GYDXTW in People's Republic of China's communication industry standard YD/T 981-1998 " Access Network optical fibre band optical cable " part 2 " central tubular ", GYDXTW53, GYDXTW33, the GYDXTW333 optical cable, and the GYDXTZW that derives from thus, GYDXTW04, GYDXTW54, the optical cable of types such as GYDXTW34, the common feature of these optical cables is based on GYDXTW, see accompanying drawing 1, it mainly is by the loose sleeve pipe 2 that is positioned at the center, be coated on the moisture-proof layer 4 outside the loose sleeve pipe 2, be coated on the steel belt layer 5 outside the moisture-proof layer 4, and be extruded in that restrictive coating 6 outside the steel belt layer 5 constitutes; Restrictive coating 6 in sub-circular has two reinforcements 3, in loose sleeve pipe 2 multifiber band 1 is arranged, and multifiber 11 is arranged in the fibre ribbon 1.In this standard, stipulated that also reinforcement outside plastics thickness should be not less than 1mm.
Also stipulated the fiber cable type of GYXTW, GYXTW53 optical cable and derivation thereof among the communication industry standard YD/T 769-2003 of the People's Republic of China (PRC) " core net with optical cable-central tubular communication outdoor optical cable ", they are based on the GYXTW optical cable, the GYXTW cable configuration is substantially with the GYDXTW optical cable, difference is that the optical transmit body in the loose sleeve pipe is many dispersions, or dried root optical fiber binding postposition is gone in the loose sleeve pipe.Equally, stipulated also in this standard that reinforcement outer rim to the plastics thickness nominal value of sheath outer rim should be not less than 1mm.
Because the reinforcement of the optical cable of the above-mentioned type is positioned within the circular jacket and the intensity of reinforcement is bigger, therefore, in the stripping fiber optic cables, very trouble needs special-purpose instrument, and wastes time and energy in check or construction.
In addition, should be not less than 1mm owing to stipulated reinforcement outside plastics thickness, though this structural stability for optical cable has played effect, but, owing to the external diameter of optical cable often along with the variation of the size of loose sleeve pipe changes, the number of fibers of being held in loose sleeve pipe more for a long time, in order to reach the requirement of pulling force, certainly will to increase the diameter of reinforcement, the optical cable that common 72 cores are above, the diameter of reinforcement is more than 1.5mm, add the inboard plastics thickness of reinforcement outside plastics thickness and reinforcement, therefore the thickness reality of the oversheath of optical cable, deduct the cost of optical fiber or fibre ribbon more than 3.0mm, the cost of sheath shared ratio even can reach more than 60% in the cost of whole optical cable, and sheath material becomes in the oil product to refine processing and obtains, therefore, with the theme of saving and sustainable development be incompatible.
Summary of the invention
At the problems referred to above, the invention provides a kind of special-shaped central beam tube type optical cable of strengthening, it is realized by the following technical solutions:
The special-shaped central beam tube type optical cable of strengthening, it at least by: be positioned at the loose sleeve pipe 2 at center, multifiber 11 and the reinforcement that is coated on the outer moisture-proof layer 4 of loose sleeve pipe 2, is coated on the outer protective seam 5 of moisture-proof layer 4 and is extruded in restrictive coating 6 outside the protective seam 5, is positioned at loose sleeve pipe 2 formed; It is characterized in that: the outer rim of described restrictive coating 6 is at least two sections discrete circular arcs, and the labyrinth radius of described circular arc is identical and center of circle circular arc overlaps and overlap with the center of circle of loose sleeve pipe 2; Between the described adjacent circular arc convex body that protrudes outside the circular arc is arranged, the outer rim of convex body and adjacent circular arc connect together; Reinforcement 3 is positioned within the convex body; And described convex body and restrictive coating 6 are integral structures.
Reinforcement in above-mentioned described each convex body is at least one.
The profile of the xsect of above-mentioned described convex body is arc or rectangle or inverted U-shaped or approximate M shape of crescent or M shape.
The material of above-mentioned described reinforcement 3 is metal or nonmetallic.
Further, above-mentioned described reinforcement 3 is steel wire or fiberglass plastic bar.
Above-mentioned described moisture-proof layer 4 is waterstop or nonwoven fabrics or glass fiber tape or mica tape or water blocking yarn or waterproofing type aramid yarn.
Above-mentioned described protective seam 5 is steel band or aluminium strip or glass fiber tape or aramid yarn.
Above-mentioned described restrictive coating 6 is low density polyethylene or medium density polyethylene or high density polyethylene or flame-proof polyethylene or low smoke and zero halogen tygon or low-smoke low-halogen tygon or smokeless halogen-free polyvinyl or nylon or anti-electric track resistant jacket material.
The thickness of above-mentioned described restrictive coating 6 is more than or equal to 0.5mm; Preferred 0.8mm or 1.0mm or 1.2mm.
The edge of above-mentioned described reinforcement is more than or equal to 0.5mm to the outer peripheral thickness of convex body; Preferred 0.8mm or 1.0mm or 1.2mm.
In the above-mentioned described optical cable, the ratio range of the length of the optical fiber 11 in the loose sleeve pipe 2 and the length of loose sleeve pipe 2 is more than or equal to 1.0002 and smaller or equal to 1.002; Preferred ratio is 1.0006.
Because the convex body protrudes from outside the restrictive coating and reinforcement is positioned among the convex body among the present invention, therefore, compare with the corresponding optical cable in the industry standard, its restrictive coating thickness can dwindle greatly, not only saved cost, and in check and the construction, only needed to cut off the convex body with pincers, can use the instrument stripping fiber optic cables of blade one class, so stripping fiber optic cables is quite convenient.
Description of drawings
Fig. 1 is a kind of cross-sectional structure synoptic diagram of the central beam tube type optical cable of this prior art;
Fig. 2 is the schematic perspective view of the invention process example one;
Fig. 3 is the cross-sectional structure synoptic diagram of Fig. 2;
Fig. 4 is the schematic perspective view of the invention process example two;
Fig. 5 is the cross-sectional structure synoptic diagram of Fig. 4;
Fig. 6 is the schematic perspective view of the invention process example three;
Fig. 7 is the cross-sectional structure synoptic diagram of Fig. 6.
Embodiment
Embodiment one:
Ask for an interview Fig. 2 and Fig. 3, the special-shaped central beam tube type optical cable of strengthening, it by: be positioned at the loose sleeve pipe 2 at center, multifiber 11 and the reinforcement that is coated on the outer moisture-proof layer 4 of loose sleeve pipe 2, is coated on the outer protective seam 5 of moisture-proof layer 4 and is extruded in restrictive coating 6 outside the protective seam 5, is positioned at loose sleeve pipe 2 formed; Optical fiber 11 in the pine sleeve pipe 2 is positioned within the fibre ribbon 1; It is characterized in that: the outer rim of described restrictive coating 6 is two sections discrete circular arcs, and the labyrinth radius of described circular arc is identical and center of circle circular arc overlaps and overlap with the center of circle of loose sleeve pipe 2; Between the described adjacent circular arc convex body that protrudes outside the circular arc is arranged, the outer rim of convex body and adjacent circular arc connect together; Reinforcement 3 is positioned within the convex body; And described convex body and restrictive coating 6 are integral structures; Reinforcement in each convex body is one; The profile of the xsect of convex body is an arc; The material of reinforcement 3 is the metal steel wire; Moisture-proof layer 4 is a waterstop; Protective seam 5 is a steel band; Restrictive coating 6 is a medium density polyethylene; The thickness of restrictive coating 6 is 1.0mm; The edge of reinforcement is 1.0mm. to the outer peripheral thickness of convex body
Above-mentioned described reinforcement is circular, and the center of circle of the center of circle of two reinforcements and loose sleeve pipe 2 in a straight line.
Certainly, also can form an angle between the line that the center of circle of the line that the center of circle of the center of circle of an above-mentioned described reinforcements and loose sleeve pipe 2 forms and the center of circle of another reinforcements and loose sleeve pipe 2 forms, its angular range is less than 180 degree greater than zero degree.
In the above-mentioned described optical cable, the ratio of the length of the optical fiber 11 in the loose sleeve pipe 2 and the length of loose sleeve pipe 2 is 1.0006; The experiment proved that when this ratio, optical cable reaches best mechanical stretching-strain property; And environment temperature performance the best, between-60 ℃ to+80 ℃, the attenuation change absolute value scope of optical cable is in 0.01dB/km; So just make the optical property of optical cable more stable, usable range is wider.
Embodiment two:
Ask for an interview Fig. 4 and Fig. 5, the special-shaped central beam tube type optical cable of strengthening, it by: be positioned at the loose sleeve pipe 2 at center, multifiber 11 and the reinforcement that is coated on the outer moisture-proof layer 4 of loose sleeve pipe 2, is coated on the outer protective seam 5 of moisture-proof layer 4 and is extruded in restrictive coating 6 outside the protective seam 5, is positioned at loose sleeve pipe 2 formed; Optical fiber 11 in the pine sleeve pipe 2 is positioned within the fibre ribbon 1; It is characterized in that: the outer rim of described restrictive coating 6 is four sections discrete circular arcs, and the labyrinth radius of described circular arc is identical and center of circle circular arc overlaps and overlap with the center of circle of loose sleeve pipe 2; Between the described adjacent circular arc convex body that protrudes outside the circular arc is arranged, the outer rim of convex body and adjacent circular arc connect together; Reinforcement 3 is positioned within the convex body; And described convex body and restrictive coating 6 are integral structures; Reinforcement in each convex body is one; The profile of the xsect of convex body is an arc; The material of reinforcement 3 is the metal steel wire; Moisture-proof layer 4 is a waterstop; Protective seam 5 is a steel band; Restrictive coating 6 is a medium density polyethylene; The thickness of restrictive coating 6 is 0.8mm; The edge of reinforcement is 0.8mm to the outer peripheral thickness of convex body.
The length of the circular arc of the outer rim of above-mentioned described restrictive coating 6 can be that what to equate also can be unequal.
Certainly, because reinforcement is decentralized, therefore, under same force request, can make the external diameter of every reinforcements littler, nationality is to reduce the entire outer diameter of optical cable, to reduce cost.
Embodiment three:
Ask for an interview Fig. 6 and Fig. 7, the special-shaped central beam tube type optical cable of strengthening, it by: be positioned at the loose sleeve pipe 2 at center, multifiber 11 and the reinforcement that is coated on the outer moisture-proof layer 4 of loose sleeve pipe 2, is coated on the outer protective seam 5 of moisture-proof layer 4 and is extruded in restrictive coating 6 outside the protective seam 5, is positioned at loose sleeve pipe 2 formed; Optical fiber 11 in the pine sleeve pipe 2 is positioned within the fibre ribbon 1; It is characterized in that: the outer rim of described restrictive coating 6 is two sections discrete circular arcs, and the labyrinth radius of described circular arc is identical and center of circle circular arc overlaps and overlap with the center of circle of loose sleeve pipe 2; Between the described adjacent circular arc convex body that protrudes outside the circular arc is arranged, the outer rim of convex body and adjacent circular arc connect together; Reinforcement 3 is positioned within the convex body; And described convex body and restrictive coating 6 are integral structures; Reinforcement in each convex body is two; The profile of the xsect of convex body is approximate M shape; The material of reinforcement 3 is the metal steel wire; Moisture-proof layer 4 is a waterstop; Protective seam 5 is a steel band; Restrictive coating 6 is a medium density polyethylene; The thickness of restrictive coating 6 is 1.2mm; The edge of reinforcement is 1.0mm to the outer peripheral thickness of convex body.
The length of the circular arc of the outer rim of above-mentioned described restrictive coating 6 can be that what to equate also can be unequal.
Certainly, the profile of the xsect of above-mentioned each convex body is spliceosome or a plurality of approximate M shape that also can be a plurality of approximate M shapes and the spliceosome that is similar to M shape for half; And the inside contains multi reinforcements, but does not directly contact between any two reinforcements, like this, not only processes but also can reduce the size of each reinforcement easily, dwindles the thickness of restrictive coating and convex body simultaneously, to reach the purpose of more saving cost.
In above-mentioned arbitrary embodiment, the reinforcement in described each convex body is at least one.
In above-mentioned arbitrary embodiment, the profile of the xsect of described convex body is arc or rectangle or inverted U-shaped or approximate M shape of crescent or M shape.
In above-mentioned arbitrary embodiment, the optical fiber 11 in the described loose sleeve pipe 2 can also disperse each other; Also can be to insert in the loose sleeve pipe 2 after the binding of multifiber bunchy.
In above-mentioned arbitrary embodiment, the material of described reinforcement 3 is metal or nonmetallic.
Further, above-mentioned described reinforcement 3 is steel wire or fiberglass plastic bar.
In above-mentioned arbitrary embodiment, described moisture-proof layer 4 is waterstop or nonwoven fabrics or glass fiber tape or mica tape or water blocking yarn or waterproofing type aramid yarn.
In above-mentioned arbitrary embodiment, described protective seam 5 is steel band or aluminium strip or glass fiber tape or aramid yarn.
In above-mentioned arbitrary embodiment, described restrictive coating 6 is low density polyethylene or medium density polyethylene or high density polyethylene or flame-proof polyethylene or low smoke and zero halogen tygon or low-smoke low-halogen tygon or smokeless halogen-free polyvinyl or nylon or anti-electric track resistant jacket material.
In above-mentioned arbitrary embodiment, the thickness of described restrictive coating 6 is more than or equal to 0.5mm; Preferred 0.8mm or 1.0mm or 1.2mm.
In above-mentioned arbitrary embodiment, the edge of described reinforcement is more than or equal to 0.5mm to the outer peripheral thickness of convex body; Preferred 0.8mm or 1.0mm or 1.2mm.
In above-mentioned arbitrary embodiment, also can be filled with waterproof paste or fine cream or other petroleum jelly or water-proofing powder or water blocking yarn in the loose sleeve pipe 2.
In above-mentioned arbitrary embodiment, outside the oversheath 6 multi-protective layer can also be set.
In the above-mentioned described optical cable, the ratio range of the length of the optical fiber 11 in the loose sleeve pipe 2 and the length of loose sleeve pipe 2 is more than or equal to 1.0002 and smaller or equal to 1.002.
Because the convex body protrudes from outside the restrictive coating and reinforcement is positioned among the convex body among the present invention, therefore, compare with the corresponding optical cable in the industry standard, its restrictive coating thickness can dwindle greatly, not only saved cost, and in check and the construction, only needed to cut off the convex body with pincers, can use the instrument stripping fiber optic cables of blade one class, so stripping fiber optic cables is quite convenient.
This paper understands exemplary embodiment of the present invention and present preferred implementation specifically, should be appreciated that the present invention conceives can implement utilization by other various forms, and they drop in protection scope of the present invention equally.
Claims (10)
1. the special-shaped central beam tube type optical cable of strengthening, it at least by: be positioned at the loose sleeve pipe (2) at center, multifiber (11) and the reinforcement that is coated on the outer moisture-proof layer (4) of loose sleeve pipe (2), is coated on the outer protective seam (5) of moisture-proof layer (4) and is extruded in restrictive coating (6) outside the protective seam (5), is positioned at loose sleeve pipe (2) formed; It is characterized in that: the outer rim of described restrictive coating (6) is at least two sections discrete circular arcs, and the labyrinth radius of described circular arc is identical and center of circle circular arc overlaps and overlap with the center of circle of loose sleeve pipe (2); Between the described adjacent circular arc convex body that protrudes outside the circular arc is arranged, the outer rim of convex body and adjacent circular arc connect together; Reinforcement (3) is positioned within the convex body; And described convex body and restrictive coating (6) are integral structures.
2. the special-shaped central beam tube type optical cable of strengthening according to claim 1, it is characterized in that: the reinforcement in described each convex body is at least one.
3. the special-shaped central beam tube type optical cable of strengthening according to claim 1, it is characterized in that: the profile of the xsect of described convex body is arc or rectangle or crescent or inverted U-shaped or M shape.
4. the special-shaped central beam tube type optical cable of strengthening according to claim 1, it is characterized in that: the optical fiber (11) in the described loose sleeve pipe (2) is positioned within the fibre ribbon (1).
5. the special-shaped central beam tube type optical cable of strengthening according to claim 1, it is characterized in that: the optical fiber (11) in the described loose sleeve pipe (2) disperses each other.
6. the special-shaped central beam tube type optical cable of strengthening according to claim 1, it is characterized in that: the material of described reinforcement (3) is metal or nonmetallic.
7. the special-shaped central beam tube type optical cable of strengthening according to claim 6, it is characterized in that: described reinforcement (3) is steel wire or fiberglass plastic bar.
8. the special-shaped central beam tube type optical cable of strengthening according to claim 1, it is characterized in that: described moisture-proof layer (4) is waterstop or nonwoven fabrics or glass fiber tape or mica tape or water blocking yarn or waterproofing type aramid yarn; Described protective seam (5) is steel band or aluminium strip or glass fiber tape or aramid yarn; Described restrictive coating (6) is low density polyethylene or medium density polyethylene or high density polyethylene or flame-proof polyethylene or low smoke and zero halogen tygon or low-smoke low-halogen tygon or smokeless halogen-free polyvinyl or nylon or anti-electric track resistant jacket material; The ratio of the length of the optical fiber (11) in the described loose sleeve pipe (2) and the length of loose sleeve pipe (2) is 1.0006.
9. the special-shaped central beam tube type optical cable of strengthening according to claim 1 is characterized in that: the thickness of described restrictive coating (6) is more than or equal to 0.5mm; The edge of described reinforcement is more than or equal to 0.5mm to the outer peripheral thickness of convex body.
10. the special-shaped central beam tube type optical cable of strengthening according to claim 9, it is characterized in that: the thickness of described restrictive coating (6) is 0.8mm or 1.0mm or 1.2mm; The edge of described reinforcement is 0.8mm or 1.0mm or 1.2mm to the outer peripheral thickness of convex body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910206144A CN101706602A (en) | 2009-10-10 | 2009-10-10 | Special and reinforced central tube type optical fiber cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910206144A CN101706602A (en) | 2009-10-10 | 2009-10-10 | Special and reinforced central tube type optical fiber cable |
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| CN101706602A true CN101706602A (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910206144A Pending CN101706602A (en) | 2009-10-10 | 2009-10-10 | Special and reinforced central tube type optical fiber cable |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081207A (en) * | 2011-01-18 | 2011-06-01 | 江苏长飞中利光纤光缆有限公司 | Central tube optical cable with compact structure |
| NL2009655C2 (en) * | 2012-01-19 | 2014-04-22 | Jelcer Ip B V | Glass fibre cable in a pressure sewer. |
| CN103985449A (en) * | 2014-04-11 | 2014-08-13 | 安徽省赛华电缆有限公司 | Electric cable for maritime communication of flat structure |
| CN104020543A (en) * | 2014-06-26 | 2014-09-03 | 吴江通信电缆厂 | Optical cable for community wiring |
| CN104062726A (en) * | 2014-06-23 | 2014-09-24 | 江苏亨通光电股份有限公司 | Heat-resisting optical cable |
| CN104698556A (en) * | 2015-03-31 | 2015-06-10 | 江苏亨通光电股份有限公司 | ADSS (All-Dielectric Self-Supporting optic fiber cable) and formation method thereof |
| CN107728277A (en) * | 2017-12-01 | 2018-02-23 | 长飞光纤光缆股份有限公司 | A kind of central-beam tube type fiber optic cable integrated production line |
-
2009
- 2009-10-10 CN CN200910206144A patent/CN101706602A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081207A (en) * | 2011-01-18 | 2011-06-01 | 江苏长飞中利光纤光缆有限公司 | Central tube optical cable with compact structure |
| NL2009655C2 (en) * | 2012-01-19 | 2014-04-22 | Jelcer Ip B V | Glass fibre cable in a pressure sewer. |
| CN103985449A (en) * | 2014-04-11 | 2014-08-13 | 安徽省赛华电缆有限公司 | Electric cable for maritime communication of flat structure |
| CN103985449B (en) * | 2014-04-11 | 2016-06-15 | 安徽省赛华电缆有限公司 | The overocean communications electric wire of flat shape structure |
| CN104062726A (en) * | 2014-06-23 | 2014-09-24 | 江苏亨通光电股份有限公司 | Heat-resisting optical cable |
| CN104020543A (en) * | 2014-06-26 | 2014-09-03 | 吴江通信电缆厂 | Optical cable for community wiring |
| CN104698556A (en) * | 2015-03-31 | 2015-06-10 | 江苏亨通光电股份有限公司 | ADSS (All-Dielectric Self-Supporting optic fiber cable) and formation method thereof |
| CN104698556B (en) * | 2015-03-31 | 2018-05-22 | 江苏亨通光电股份有限公司 | A kind of ADSS optical fiber cables and its forming method |
| CN107728277A (en) * | 2017-12-01 | 2018-02-23 | 长飞光纤光缆股份有限公司 | A kind of central-beam tube type fiber optic cable integrated production line |
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Application publication date: 20100512 |