CN102364609A - Method for manufacturing central-tube type single-sheath unarmored fully-dried type optical fiber composite optical cable - Google Patents
Method for manufacturing central-tube type single-sheath unarmored fully-dried type optical fiber composite optical cable Download PDFInfo
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- CN102364609A CN102364609A CN2011103501840A CN201110350184A CN102364609A CN 102364609 A CN102364609 A CN 102364609A CN 2011103501840 A CN2011103501840 A CN 2011103501840A CN 201110350184 A CN201110350184 A CN 201110350184A CN 102364609 A CN102364609 A CN 102364609A
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- conductor
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- optical fiber
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 44
- 230000003287 optical effect Effects 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 239000004020 conductor Substances 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 12
- 230000000903 blocking effect Effects 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003063 flame retardant Substances 0.000 claims abstract description 10
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 230000010354 integration Effects 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 229910052736 halogen Inorganic materials 0.000 abstract 1
- 150000002367 halogens Chemical class 0.000 abstract 1
- 239000004800 polyvinyl chloride Substances 0.000 abstract 1
- 239000000779 smoke Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- 239000002674 ointment Substances 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention discloses a method for manufacturing a central-tube type single-sheath unarmored fully-dried type optical fiber composite optical cable. A fully-dried type (central-tube type) optical unit, a conductor on which an insulating layer is coated, a filling rope and the like are stranded and then externally coated by using a thermal insulation belt; a plurality of dried water blocking objects can be added into a clearance of a cable core so as to achieve effects of rounding the cable core and blocking water; a layer of outer sheath is extruded; and the insulating layer of the conductor, a filling material and the outer sheath adopt a flame retardant material which is polyvinyl chloride (PVC) or low smoke zero halogen (LSZH). Meanwhile, the optical unit is the central-tube type optical unit which has a loose-sleeve fully-dried type structure; and the interior of a sleeve or the cable core is made of a dried type water blocking material, so that water-proof and moisture-proof effects of total cross-section are achieved.
Description
Technical Field
The application relates to a method for manufacturing a central tube type single-sheath unarmored fully-dry optical fiber composite optical cable.
Background
With the requirement of strategic construction of the national smart grid, the national grid can be used for constructing the smart grid nationwide. The intelligent power grid is based on a strong grid frame which takes an extra-high voltage power grid as a backbone grid frame and is coordinately developed with power grids at all levels, and is supported by a communication information platform, has the characteristics of informatization, automation and interaction, comprises six links of power generation, power transmission, power transformation, power distribution, power utilization and scheduling of a power system, covers all voltage levels, realizes multi-grid fusion of power flow, information flow and service flow, and has a modern power grid which is strong, reliable, economic, efficient, clean, environment-friendly, transparent, open and friendly in interaction connotation. In the medium-voltage section cable and the high-voltage section cable in the current market, an OPGW (optical fiber composite overhead ground wire) or an ADSS (automatic dependent Surveillance gateway) and the existing power conductor form a multi-network fusion concept, and in the medium-voltage section and the low-voltage section, namely a metropolitan area network or when a user accesses, the city appearance construction requirement is considered, the cable laying mode is often changed from the road to the underground, namely a pipeline and a direct-buried mode become more common, and therefore the optical fiber and the power conductor which are used for transmitting information are fused into one optical fiber composite cable, so that the optical fiber composite cable becomes the main force.
The optical unit in the newly developed full-dry optical fiber composite cable adopts a loose tube full-dry structure, namely, the inside of the tube or the cable core adopts a dry water-blocking material to realize the full-section water-proof and moisture-proof functions. The invention is mainly used in 10kV and the following distribution networks, the laying mode is mainly direct-buried or pipeline, and the invention has the following main advantages:
(1) because the whole cross section of the optical unit adopts the dry type water-blocking material to realize the water-blocking effect, and the problem of longitudinal dripping of ointment is avoided, the water-blocking of the whole long section of the optical unit can be effectively protected in a section with large fall or vertical wiring;
(2) because the optical unit is not filled with oil paste, the optical fiber composite cable has better flame retardant property;
(3) because the optical fiber is loosely wrapped in the sleeve, the optical fiber is not bound in the tight sleeve layer like a tight sleeve optical cable, so the optical fiber has the characteristic of small attenuation in a wider temperature range, and is particularly suitable for the construction of long-distance medium-voltage section lines and the application of optical splitters in low-voltage section lines.
Disclosure of Invention
The protection according to the structural type of the power cable and the optical unit is considered in the structural design process. Considering the long-term working temperature of the cable, the optical unit can adopt high-temperature-resistant fiber paste and high-temperature-resistant optical fibers or adopt a certain isolation layer to ensure the stability of the transmission performance of the optical fibers.
According to the networking requirement of the cable, the full-dry type optical unit can adopt a central tube type structure optical unit;
according to the cable laying requirement, the outer sheath can be in a single-sheath unarmored type;
the manufacturing method of the central tube type single-sheath unarmored fully-dry optical fiber composite optical cable comprises the following steps:
(1) preparing a conductor, wherein a single copper wire is used as the conductor, an insulating layer is coated on the periphery of the conductor to improve the transmission performance of the conductor, and three conductors are used as a conductor unit; (2) preparing a central tube type optical unit, mounting a plurality of optical fibers on a pay-off rack, and adjusting pay-off stretching force to be 40-100 g; (3) leading out a plurality of optical fibers according to a specified direction, leading the optical fibers into an extruding machine, extruding and coating a loose tube outside the optical fibers, and simultaneously injecting a dry-type water-blocking substance into the extruded loose tube, wherein the injection amount of the dry-type water-blocking substance is 92-98% of the section of the inner cavity of the feeding tube; (4) the filling reinforcement is internally wrapped with an optical fiber coated by a loose tube so as to enhance the supporting force and the tensile strength; (5) a light unit sheath is extruded outside the metal reinforcing piece; (6) the conductor units formed by the three conductors and the central tube type optical unit form a cable core, optical fiber attenuation and extra length detection are carried out on the cable core, the cable core is stranded through cabling and sequentially coated with the heat insulation belt and the outer sheath after the detection is finished, and a dry water blocking object is added in a gap of the cable core to ensure the circular integration and the water blocking effect of the cable core. Wherein, the wire insulating layer, the filler and the outer protective layer are made of flame retardant materials. Wherein the flame retardant material is PVC or LSZH.
The optical unit of the composite cable designed and developed by the method adopts a full-dry structure, namely, dry water-blocking materials are adopted in the loose sleeve and the gap of the cable core to realize full-section water blocking, and the whole optical unit is of a nonmetal full-medium structure. Because the whole optical fiber composite cable adopts raw materials with excellent performance and a more appropriate structure, the optical unit has the characteristics of better heat insulation, compression resistance and tensile strength, and the whole cable has better electrical performance and optical performance, thereby completely meeting the requirements of intelligent power grid construction.
Drawings
FIG. 1A cross-sectional view of a composite cable
FIG. 2 light unit cross-sectional view
FIG. 3 is a flow chart of a method
Wherein,
11-conductor
12-insulating layer
13-light unit
14-Heat insulation band
15-outer sheath
A1-light unit sheath
A2 non-metallic reinforcement
A3-Loose tube
A4-Dry Water Barrier
A5-optical fiber
Detailed Description
Referring to the composite cable structure of fig. 1 and 2 and the flow of fig. 3, the method for manufacturing the central tube type single-sheath unarmored fully-dry optical fiber composite optical cable of the present application is as follows: (1) preparing a conductor, wherein a single copper wire is used as the conductor, an insulating layer is coated on the periphery of the conductor to improve the transmission performance of the conductor, and three conductors are used as a conductor unit; (2) preparing a central tube type optical unit, mounting a plurality of optical fibers on a pay-off rack, and adjusting pay-off stretching force to be 40-100 g; (3) leading out a plurality of optical fibers according to a specified direction, leading the optical fibers into an extruding machine, extruding and coating a loose tube outside the optical fibers, and simultaneously injecting a dry-type water-blocking substance into the extruded loose tube, wherein the injection amount of the dry-type water-blocking substance is 92-98% of the section of the inner cavity of the feeding tube; (4) the filling reinforcement is internally wrapped with an optical fiber coated by a loose tube so as to enhance the supporting force and the tensile strength; (5) a light unit sheath is extruded outside the metal reinforcing piece; (6) the conductor units formed by the three conductors and the central tube type optical unit form a cable core, optical fiber attenuation and extra length detection are carried out on the cable core, the cable core is stranded through cabling and sequentially coated with the heat insulation belt and the outer sheath after the detection is finished, and a dry water blocking object is added in a gap of the cable core to ensure the circular integration and the water blocking effect of the cable core. Wherein, the wire insulating layer, the filler and the outer protective layer are made of flame retardant materials. Wherein the flame retardant material is PVC or LSZH.
Through the development of a new structure, a full-dry type optical fiber composite cable is designed, a brand-new product is provided for medium-voltage and low-voltage sections in the construction of a smart grid, the defects of an ointment filling type optical unit in the vertical wiring application process are overcome, the construction cost is saved when optical fibers and power conductors in the optical fiber composite low-voltage cable are integrated in the same cable, and the situation of pipeline resource shortage is relieved to a certain extent.
Thereby the following effects are achieved:
1. communication management of medium-voltage and low-voltage sections in the intelligent power grid is solved, and a foundation is laid for four-network integration;
2. repeated wiring of the optical cable and the electric cable is avoided, and construction cost is saved;
3. the problem of longitudinal dripping of the ointment in an ointment filling type structure is avoided, and the requirements of moisture prevention and moisture blocking of the whole length section of the light unit are met.
4. The fire retardant has good fire retardant performance because ointment is not used.
Because the optical fiber is loosely wrapped in the sleeve, the optical fiber is not bound in the tight sleeve layer like a tight sleeve optical cable, so the optical fiber has the characteristic of small attenuation in a wider temperature range, and is particularly suitable for the construction of long-distance medium-voltage section lines and the application of optical splitters in low-voltage section lines.
Claims (3)
1. A method for manufacturing a central tube type single-sheath unarmored fully-dry optical fiber composite optical cable is characterized by comprising the following steps:
(1) preparing a conductor, wherein a single copper wire is used as the conductor, an insulating layer is coated on the periphery of the conductor to improve the transmission performance of the conductor, and three conductors are used as a conductor unit;
(2) preparing a central tube type optical unit, mounting a plurality of optical fibers on a pay-off rack, and adjusting pay-off stretching force to be 40-100 g;
(3) leading out a plurality of optical fibers according to a specified direction, leading the optical fibers into an extruding machine, extruding and coating a loose tube outside the optical fibers, and simultaneously injecting a dry-type water-blocking substance into the extruded loose tube, wherein the injection amount of the dry-type water-blocking substance is 92-98% of the section of the inner cavity of the feeding tube;
(4) the reinforcing piece made of non-metal materials is tubular, and the tubular reinforcing piece is internally wrapped with an optical fiber coated by a loose tube so as to enhance the supporting force and the tensile strength;
(5) a light unit sheath is extruded outside the metal reinforcing piece;
(6) the conductor units formed by the three conductors and the central tube type optical unit form a cable core, optical fiber attenuation and extra length detection are carried out on the cable core, the cable core is stranded through cabling and sequentially coated with the heat insulation belt and the outer sheath after the detection is finished, and a dry water blocking object is added in a gap of the cable core to ensure the circular integration and the water blocking effect of the cable core.
2. The method of claim 1, wherein the wire insulation layer, the filler and the outer jacket are made of flame retardant materials.
3. The method of claim 2, wherein the flame retardant material is PVC or LSZH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103501840A CN102364609A (en) | 2011-11-08 | 2011-11-08 | Method for manufacturing central-tube type single-sheath unarmored fully-dried type optical fiber composite optical cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103501840A CN102364609A (en) | 2011-11-08 | 2011-11-08 | Method for manufacturing central-tube type single-sheath unarmored fully-dried type optical fiber composite optical cable |
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| Publication Number | Publication Date |
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| CN102364609A true CN102364609A (en) | 2012-02-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103501840A Pending CN102364609A (en) | 2011-11-08 | 2011-11-08 | Method for manufacturing central-tube type single-sheath unarmored fully-dried type optical fiber composite optical cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021547A (en) * | 2012-12-28 | 2013-04-03 | 江苏亨通光电股份有限公司 | Photoelectric fusion hybrid cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1862303A (en) * | 2006-06-20 | 2006-11-15 | 江苏中天科技股份有限公司 | Non-universal optical unit of submarine photoelectric composite cable and making method thereof |
| CN101029955A (en) * | 2007-04-03 | 2007-09-05 | 长飞光纤光缆有限公司 | Waterproof armoured optical fiber and grease injection coating machine in protecting-layer apparatus |
| CN201203683Y (en) * | 2008-02-29 | 2009-03-04 | 四川九洲线缆有限责任公司 | Communication optical cable for layer-twisted type coal mine |
| CN201853538U (en) * | 2010-11-12 | 2011-06-01 | 江苏亨通光电股份有限公司 | Full-dry optical fiber composite cable |
-
2011
- 2011-11-08 CN CN2011103501840A patent/CN102364609A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1862303A (en) * | 2006-06-20 | 2006-11-15 | 江苏中天科技股份有限公司 | Non-universal optical unit of submarine photoelectric composite cable and making method thereof |
| CN101029955A (en) * | 2007-04-03 | 2007-09-05 | 长飞光纤光缆有限公司 | Waterproof armoured optical fiber and grease injection coating machine in protecting-layer apparatus |
| CN201203683Y (en) * | 2008-02-29 | 2009-03-04 | 四川九洲线缆有限责任公司 | Communication optical cable for layer-twisted type coal mine |
| CN201853538U (en) * | 2010-11-12 | 2011-06-01 | 江苏亨通光电股份有限公司 | Full-dry optical fiber composite cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021547A (en) * | 2012-12-28 | 2013-04-03 | 江苏亨通光电股份有限公司 | Photoelectric fusion hybrid cable |
| CN103021547B (en) * | 2012-12-28 | 2016-01-20 | 江苏亨通光电股份有限公司 | Photoelectric fusion hybrid cable |
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Application publication date: 20120229 |