WO2021232630A1 - 铠装微束光缆及制作方法 - Google Patents

铠装微束光缆及制作方法 Download PDF

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Publication number
WO2021232630A1
WO2021232630A1 PCT/CN2020/115131 CN2020115131W WO2021232630A1 WO 2021232630 A1 WO2021232630 A1 WO 2021232630A1 CN 2020115131 W CN2020115131 W CN 2020115131W WO 2021232630 A1 WO2021232630 A1 WO 2021232630A1
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WIPO (PCT)
Prior art keywords
micro
tape
bundle
armored
optical fiber
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PCT/CN2020/115131
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English (en)
French (fr)
Inventor
朱鹏宇
缪威玮
汪趁时
陆杰
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江苏中天科技股份有限公司
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Publication of WO2021232630A1 publication Critical patent/WO2021232630A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
    • 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
    • G02B6/4479—Manufacturing methods of optical 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
    • G02B6/4479—Manufacturing methods of optical cables
    • G02B6/4486—Protective covering

Definitions

  • This application relates to the field of cable production, in particular to an armored micro-bundle optical cable and a manufacturing method.
  • outdoor optical cables based on micro-bundle tubes have more convenient stripping performance and bending performance during use, which makes it more advantageous in the process of laying, installation and personnel operations.
  • the embodiment of the present application provides an armored micro-bundle optical fiber cable, including a micro-bundle tube and a water-blocking yarn twisted on the micro-bundle tube, the armored micro-bundle optical fiber cable further includes covering the micro-bundle tube and Water blocking tape, inner sheath, armor tape, and outer sheath outside the water blocking yarn.
  • the water blocking tape includes a first water blocking tape and a second water blocking tape. The first water blocking tape is arranged on the Between the microbeam tube and the inner sheath, the second water blocking tape is arranged between the inner sheath and the armor tape.
  • the armor tape includes a steel tape or an aluminum tape
  • D 4 is the outer diameter of the inner sheath
  • M 2 is the thickness of the armor tape
  • M 3 is the thickness of the water blocking tape
  • K 1 is the correction factor of 1 to 1.5 mm.
  • the armored micro-bundle optical fiber cable further includes a colored wire, and the colored wire is used to combine a plurality of the micro-bundle tubes into a bundle, and each bundle passes through a different colored light beam.
  • the thickness of the color line is 0.1 to 0.2 mm, and the equivalent width is 0.1 to 2 mm.
  • the inner cavity half of the inner sheath is the inner cavity half of the inner sheath
  • the path is:
  • M 1 is the color line thickness
  • N 1 is the number of color lines
  • N 2 is the equivalent number of water-blocking yarns
  • N 3 is the number of micro-beam tubes
  • D 2 is the outer diameter of the micro-beam tubes
  • K is the correction coefficient
  • K is taken The value is 0.5 to 1.5 mm.
  • the armored micro-bundle optical fiber cable further includes a tear cord, and the tear cord is disposed in the second water blocking tape or the outer sheath.
  • the armored micro-bundle optical fiber cable further includes a non-metallic strength member, and the non-metallic strength member is embedded in the inner sheath.
  • the material of the microbeam tube sheath includes one or more combinations of low-smoke halogen-free flame-retardant polyolefin materials, polyvinyl chloride, and thermoplastic polyester elastomers.
  • the micro-bundle tube includes an optical fiber, a fiber paste, and a micro-bundle tube sheath, the optical fiber is disposed in the micro-bundle tube sheath, and the fiber paste is filled in the In the sheath of the microbeam tube.
  • the optical fiber is SZ stranded or S stranded in the microbeam tube sheath, and the wall thickness of the microbeam tube sheath is 0.1-0.2 mm.
  • the embodiment of the present application also provides a method for manufacturing the armored micro-bundle optical cable, which includes the following steps:
  • Twist the water-blocking yarn and multiple cable cores wrap the first water-blocking tape on the twisted water-blocking yarn and cable core, and extrude the inner sheath outside the first water-blocking tape;
  • the second water blocking tape is wrapped on the inner sheath, the armor tape is wrapped on the second water blocking tape, the outer sheath is extruded on the armor tape, and the armored micro-bundle optical cable is obtained after cooling.
  • the above-mentioned armored micro-bundle optical cable adopts armored tape to protect the internal structure of the optical cable.
  • the optical cable has the properties of tensile resistance, lateral pressure resistance and impact resistance. It can be directly buried in extreme geographic environments, reducing construction costs, and the internal and external double layers
  • the water-blocking tape ensures that the internal dryness of the optical cable can still be ensured in a high-humidity environment to ensure signal transmission.
  • FIG. 1 is a schematic diagram of the structure of a microbeam tube in an embodiment of the application.
  • FIG. 2 is a schematic cross-sectional view of an armored micro-bundle optical fiber cable in an embodiment of the application.
  • FIG. 3 is a schematic cross-sectional view of the armored micro-bundle optical cable in the first embodiment of the application.
  • FIG. 4 is a schematic cross-sectional view of the armored micro-bundle optical fiber cable in the second embodiment of the application.
  • FIG. 5 is a schematic cross-sectional view of an armored micro-bundle optical fiber cable in a third embodiment of the application.
  • FIG. 6 is a schematic cross-sectional view of the armored micro-bundle optical fiber cable in Embodiment 4 of the application.
  • a component when a component is called “installed on” another component, it can be directly on the other component or a central component may also exist. When a component is considered to be “installed on” another component, it can be directly installed on another component or a centered component may exist at the same time.
  • the embodiment of the present application provides an armored micro-bundle optical fiber cable, including a micro-bundle tube and a water-blocking yarn twisted on the micro-bundle tube, the armored micro-bundle optical fiber cable further includes covering the micro-bundle tube and Water blocking tape, inner sheath, armor tape, and outer sheath outside the water blocking yarn.
  • the water blocking tape includes a first water blocking tape and a second water blocking tape. The first water blocking tape is arranged on the Between the microbeam tube and the inner sheath, the second water blocking tape is arranged between the inner sheath and the armor tape.
  • the embodiment of the present application also provides a method for manufacturing the armored micro-bundle optical cable, which includes the following steps:
  • Twist the water-blocking yarn and multiple cable cores wrap the first water-blocking tape on the twisted water-blocking yarn and cable core, and extrude the inner sheath outside the first water-blocking tape;
  • the second water blocking tape is wrapped on the inner sheath, the armor tape is wrapped on the second water blocking tape, the outer sheath is extruded on the armor tape, and the armored micro-bundle optical cable is obtained after cooling.
  • the above-mentioned armored micro-bundle optical cable adopts armored tape to protect the internal structure of the optical cable.
  • the optical cable has the properties of tensile resistance, lateral pressure resistance and impact resistance. It can be directly buried in extreme geographic environments, reducing construction costs, and the internal and external double layers
  • the water-blocking tape ensures that the dryness of the fiber optic cable can still be ensured in a high-humidity environment, and the signal transmission can be ensured.
  • SZ twist in this article refers to left and right twist.
  • the twisting direction of the twisting is divided into left and right directions.
  • the left direction resembles "S”, also called S direction
  • the right direction resembles "Z”, also called Z direction.
  • the microbeam tube 10 shown in FIG. 1 includes an optical fiber 11, a fiber paste 12, and a microbeam tube sheath 13.
  • the optical fiber 11 is disposed in the microbeam tube sheath 13, and the fiber paste 12 is filled Inside the microbeam tube sheath 13.
  • the size of the optical fiber 11 can be nominally 250 ⁇ m, 200 ⁇ m, and 180 ⁇ m. When one is one, it is usually distinguished by coloring.
  • the optical fiber 11 is usually SZ twisted in the micro-bundle tube sheath 13, and may also be S twisted.
  • the size of the optical fiber 11 is not limited to the above limitation, and can be adjusted according to specific requirements.
  • the density of the fiber paste 12 is 0.5-0.88 g/cm 3
  • the water content is ⁇ 0.03%
  • the fiber paste 12 is clean and free of impurities, and at the same time, it is non-corrosive to the optical fiber.
  • the wall thickness of the microbeam tube sheath 13 is 0.1-0.2 mm.
  • the material of the microbeam tube sheath 13 includes one or more combinations of low-smoke halogen-free flame-retardant polyolefin material (LSZH), polyvinyl chloride (PVC), and thermoplastic polyester elastomer (TPEE).
  • the material of the microbeam tube sheath 13 may also include other polyolefin materials.
  • the material density of the microbeam tube sheath 13 is usually 1 to 1.5 g/cm 3 , the tensile strength is 10 to 20 MPa, and the elongation at break is 100% to 500%.
  • the outer diameter of the optical fiber 11 when the outer diameter of the optical fiber 11 is nominally 250 ⁇ m, the outer diameter of the 4-core microbeam tube sheath 13 is 1.0 ⁇ 0.1 mm, and the outer diameter of the 6-core microbeam tube sheath 13 The diameter is 1.1 ⁇ 0.1mm, and the outer diameter of the 12-core microbeam tube sheath 13 is 1.3 ⁇ 0.1mm.
  • the outer diameter of the optical fiber 11 when the outer diameter of the optical fiber 11 is nominally 200 ⁇ m, the outer diameter of the 4-core microbeam tube sheath 13 is 0.9 ⁇ 0.1 mm, and the 6-core microbeam tube sheath 13 The outer diameter is 1.0 ⁇ 0.1mm, and the outer diameter of the 12-core microbeam tube sheath 13 is 1.2 ⁇ 0.1mm.
  • an armored micro-bundle optical fiber cable 100 includes at least one of the micro-bundle tubes 10, a first water-blocking tape 20, an inner sheath 30, a second water-blocking tape 40, and an armor tape that are sequentially wrapped and arranged 50 and outer sheath 60.
  • the overall size of the armored micro-bundle optical cable 100 is 23.0 ⁇ 1.15 mm.
  • the micro-bundle tube 10 adopts helical twisting, which may be SZ twisted or S twisted.
  • the armored micro-bundle optical fiber cable 100 further includes colored threads and water-blocking yarns 70.
  • the colored threads are used to combine 6-12 micro-bundle tubes 10 into one bundle, and each bundle passes through a different bundle. After the color lines of the colors are distinguished, they are twisted together with the water blocking yarn 70 to form a cable core.
  • the colored thread is polyester yarn, aramid yarn or polyester tape, the thickness of the colored thread is 0.1-0.2 mm, and its equivalent width is 0.1-2 mm.
  • the water-blocking yarn 70 is arranged in the gap of the micro-bundle tube 10, and the water-blocking yarn 70 is compounded by cross-linked polyacrylate expansion powder, and the expansion rate is ⁇ 90ml/g/ min, expansion rate ⁇ 110ml/g, tensile strength ⁇ 100N, elongation at break ⁇ 15%.
  • the linear density of the water blocking yarn 70 is 3000 m/kg. It can be understood that the linear density of the water blocking yarn 70 may also be 4000 m/kg, 5000 m/kg, 6000 m/kg, etc., and is not limited to the above setting.
  • the first water-blocking tape 20 and the second water-blocking tape 40 are double-sided water-blocking tapes, which are composed of polyester fiber non-woven fabric, super absorbent swellable material and polyester fiber non-woven fabric in sequence.
  • the water-absorbing swelling material is often compounded by cross-linked polyacrylate expansion powder, which is not only heat-resistant, stable in chemical resistance, but also free of acid and alkali.
  • the thickness of the water-blocking tape is ⁇ 0.25mm, the expansion rate is ⁇ 10mm/min, and the expansion height ⁇ 12mm, tensile strength ⁇ 40N/cm, breaking elongation ⁇ 12%.
  • the thickness of the first water blocking tape 20 and the second water blocking tape 40 are the same or different.
  • the armored micro-bundle optical fiber cable 100 further includes a tear cord 80, and the tear cord 80 is disposed in the second water blocking tape 40 or the outer sheath 60.
  • the material of the tear rope 80 may be aramid or polyester yarn, linear density ⁇ 333tex, tensile strength ⁇ 150N, elongation at break ⁇ 12%, softening point ⁇ 238°C, melting point ⁇ 265 °C.
  • the material of the inner sheath 30 is polyolefin material.
  • the material of the inner sheath 30 is medium-density polyethylene or high-density polyethylene, or a low-smoke, halogen-free, flame-retardant polyolefin material.
  • the inner cavity radius of the optical cable is the inner cavity radius of the inner sheath 30.
  • the equivalent diameter of the cable core D (M 1 ⁇ N 1 +D 1 2 +N 2 ⁇ 0.43 2 ) 1/2 , where M 1 is the thickness of the colored thread, N 1 is the number of colored threads, and N 2 is the water blocking yarn, etc.
  • the effective quantity which is the density specification of the water-blocking yarn bus line divided by 1420 Denier (fineness is also called denier, that is, the number of deniers)
  • N 3 is the number of microbeam tubes
  • D 2 is the outer diameter of the microbeam tubes.
  • At least one non-metal reinforcing member 31 is also embedded in the inner sheath 30.
  • the non-metallic reinforcement 31 is a glass fiber reinforced plastic rod (FRP) with a density of 2.05-2.15 g/cm 3 , tensile and bending strength ⁇ 1100MPa, and tensile and bending elastic modulus ⁇ 50GPa , Elongation at break ⁇ 4%, water absorption ⁇ 0.1%, at the same time, it has a low coefficient of thermal expansion of 5 ⁇ 10 ⁇ 5 ⁇ 6 ⁇ 10 ⁇ 5 K ⁇ 1 , and has stable acid and alkali resistance and chemical properties.
  • FRP glass fiber reinforced plastic rod
  • the surface of the non-metallic reinforcement 31 is coated with a layer of organic polymer, and the extraction force between the FRP and the inner sheath 30 is ⁇ 50N.
  • the armor tape 50 has a thickness of 0.1-0.2 mm, a peel strength ⁇ 6.13 N/cm, a tensile strength of 310-390 MPa, and an elongation at break ⁇ 15%.
  • the armor tape 50 includes a steel tape or an aluminum tape.
  • the sizing D 3 of the armor tape 50 D 4 + M 2 ⁇ 2 + M 3 ⁇ 2 + K 1 , D 4 is the outer diameter of the inner sheath 30, and M 2 is the thickness of the armor tape 50 , M 3 is the thickness of the water-blocking tape, K 1 is the correction coefficient, which generally takes a value of 1 to 1.5 mm.
  • the material of the outer sheath 60 is medium-density polyethylene or high-density polyethylene.
  • the number of optical fiber 11 cores is 72 cores
  • each microbeam tube 10 is provided with 12 optical fibers 11, the outer diameter of the 12-core microbeam tube 10 is 1.3 ⁇ 0.1mm, and the colors of the microbeam tube 10 are red, blue, and green. , Yellow, purple, white.
  • the colors of optical fiber 11 are red, blue, green, yellow, purple, white, orange, gray, brown, black, cyan, and pink.
  • Optical fiber 11 uses G.657A2 optical fiber.
  • the coating diameter of the colored optical fiber is 250 ⁇ m ⁇ 15 ⁇ m. SZ twists are used in the microbeam tube 10.
  • Each microbeam tube 10 is filled with fiber cream 12 to ensure that 1 meter of water column, 3 meters of microbeam tube length, no water seepage occurs for 24 hours.
  • the wall thickness of the microbeam tube sheath 13 is generally between 0.1 and 0.2mm.
  • the microbeam tube sheath 13 is made of TPEE material with a density of 1.0 ⁇ 1.4g/cm 3 , and the tensile strength is generally 10 ⁇ 17MPa.
  • the growth rate is usually 200% to 250%.
  • the microbeam tube 10 is twisted with a spiral S in the sheath.
  • the water-blocking yarn 70 adopts a linear density of 3000m/kg, a quantity of 5, an expansion rate ⁇ 90ml/g/min, an expansion rate ⁇ 110ml/g, a tensile strength ⁇ 100N, and an elongation at break ⁇ 15%.
  • the first water blocking tape 20 is a double-sided water blocking tape, the thickness of the water blocking tape is 0.2mm, the width is 22mm, the expansion rate is ⁇ 10mm/min, the expansion height is ⁇ 12mm, the tensile strength is ⁇ 40N/cm, and the elongation at break ⁇ 12%.
  • the inner sheath 30 is made of high-density polyethylene, the thickness of the inner sheath 30 is nominally 2.6 mm, and the outer diameter of the inner sheath 30 is nominally 10.9 mm.
  • the outer sheath 30 adopts steel tape armor tape 50, the thickness of the steel tape is usually 0.15mm, the peeling strength is ⁇ 6.13N/cm, the tensile strength meets 310 ⁇ 390MPa, the elongation at break ⁇ 15%, and the diameter of the steel tape is 13mm. .
  • the second water blocking tape 40 is filled between the steel tape and the inner sheath 30.
  • the second water blocking tape 40 is a double-sided water blocking tape.
  • the thickness of the water blocking tape is 0.2mm, the width is 46mm, and the expansion rate is ⁇ 10mm/min. Height ⁇ 12mm, tensile strength ⁇ 40N/cm, elongation at break ⁇ 12%.
  • the material of the tear rope 80 is aramid, the tensile strength is ⁇ 150N, the elongation at break is ⁇ 12%, the softening point is ⁇ 238°C, and the melting point is ⁇ 265°C.
  • the material of the outer sheath 60 is high-density polyethylene.
  • the thickness of the sheath of the outer sheath 60 is nominally 2.0 mm, and the overall outer diameter of the optical cable is nominally 17.0 mm.
  • the number of cores of the optical fiber 11 is 432, and each microbeam tube 10 contains 12 fibers 11, the outer diameter of the 12-core microbeam tube 10 is 1.3 ⁇ 0.1mm, and the color of the 36 microbeam tubes 10 is blue, Orange, green, brown, gray, white, red, black, yellow, purple, pink, cyan, blue plus 1 black ring, orange plus 1 black ring, green plus 1 black ring, brown plus 1 black ring , Gray plus 1 black ring, white plus 1 black ring, red plus 1 black ring, black plus 1 white ring, yellow plus 1 black ring, purple plus 1 black ring, pink plus 1 black ring, Cyan plus 1 black ring, blue plus 2 black rings, orange plus 2 black rings, green plus 2 black rings, brown plus 2 black rings, gray plus 2 black rings, white plus 2 black rings , Red plus 2 black rings, black plus 2 white rings, yellow plus 2 black rings, purple plus 2 black rings, pink plus 2 black rings, cyan plus 2 black rings.
  • the 36 micro-bundle tubes 10 are combined into 3 bundles by color threads, the number of color threads is 3, the color threads are polyester yarns, and the thickness of the color threads is 0.1 mm.
  • the colors of optical fiber 11 are red, blue, green, yellow, purple, white, orange, gray, brown, black, cyan, and pink.
  • Optical fiber 11 uses G.657A2 optical fiber. After coloring, the coating diameter of optical fiber is 250 ⁇ m ⁇ 15 ⁇ m. SZ twists are used in the microbeam tube 10.
  • Each microbeam tube 10 is filled with fiber cream 12 to ensure that 1 meter of water column, 3 meters of microbeam tube length, no water seepage occurs for 24 hours.
  • the wall thickness of the microbeam tube sheath 13 is generally between 0.1 and 0.2mm.
  • the microbeam tube sheath 13 is made of TPEE material with a density of 1.0 ⁇ 1.4g/cm 3 , and the tensile strength is generally 10 ⁇ 17MPa.
  • the growth rate is usually 200% to 250%.
  • the microbeam tube 10 is twisted with a spiral S in the sheath.
  • the water blocking yarn 70 adopts a linear density of 3000m/kg, a quantity of 26, an expansion rate ⁇ 90ml/g/min, an expansion rate ⁇ 110ml/g, a tensile strength ⁇ 100N, and a breaking elongation ⁇ 15%.
  • the first water blocking tape 20 is a double-sided water blocking tape, the thickness of the water blocking tape is 0.2mm, the width is 40mm, the expansion rate is ⁇ 10mm/min, the expansion height is ⁇ 12mm, the tensile strength is ⁇ 40N/cm, and the elongation at break ⁇ 12%.
  • the material of the inner sheath 30 is high-density polyethylene, the wall thickness of the inner sheath 30 is nominally 2.4 mm, and the outer diameter of the inner sheath 30 is nominally 16.4 mm.
  • the inner sheath 30 adopts steel tape armoring tape 50, the thickness of the steel tape is 0.15mm, the peeling strength is ⁇ 6.13N/cm, the tensile strength meets 310 ⁇ 390MPa, the elongation at break ⁇ 15%, the diameter of the steel tape is 18.5mm .
  • the second water blocking tape is filled between the steel tape and the inner sheath 30.
  • the second water blocking tape 40 is a double-sided water blocking tape.
  • the thickness of the second water blocking tape 40 is 0.2mm, the width is 60mm, and the expansion rate is ⁇ 10mm/min. , Expansion height ⁇ 12mm, tensile strength ⁇ 40N/cm, breaking elongation ⁇ 12%.
  • the material of the tear rope 80 is aramid, the tensile strength is ⁇ 150N, the elongation at break is ⁇ 12%, the softening point is ⁇ 238°C, and the melting point is ⁇ 265°C.
  • the outer sheath 60 is made of high-density polyethylene.
  • the thickness of the outer sheath 60 is nominally 2.0 mm, and the overall outer diameter of the optical cable is nominally 22.5 mm.
  • the number of fiber 11 cores is 144 cores
  • each microbeam tube 10 is equipped with 12 fibers 11, the outer diameter of the 12-core microbeam tube 10 is 1.3 ⁇ 0.1mm, and the colors of the microbeam tube 10 are red, blue, and green. , Yellow, purple, white, orange, gray, brown, black, blue, pink.
  • the colors of optical fiber 11 are red, blue, green, yellow, purple, white, orange, gray, brown, black, cyan, and pink.
  • Optical fiber 11 uses G.657A2 optical fiber.
  • the coating diameter of the colored optical fiber is 250 ⁇ m ⁇ 15 ⁇ m. SZ twists are used in the microbeam tube 10.
  • Each microbeam tube 10 is filled with fiber cream 12 to ensure that 1 meter of water column, 3 meters of microbeam tube length, no water seepage occurs for 24 hours.
  • the wall thickness of the microbeam tube sheath 13 is generally between 0.1 and 0.2mm.
  • the microbeam tube sheath 13 is made of TPEE material with a density of 1.0 ⁇ 1.4g/cm 3 , and the tensile strength is generally 10 ⁇ 17MPa.
  • the growth rate is usually 200% to 250%.
  • the microbeam tube 10 is twisted with a spiral S in the sheath.
  • the water-blocking yarn 70 adopts a linear density of 3000m/kg, a number of 9 yarns, an expansion rate ⁇ 90ml/g/min, an expansion rate ⁇ 110ml/g, a tensile strength ⁇ 100N, and an elongation at break ⁇ 15%.
  • the first water blocking tape 20 is a double-sided water blocking tape, the thickness of the water blocking tape is 0.2mm, the width is 26mm, the expansion rate is ⁇ 10mm/min, the expansion height is ⁇ 12mm, the tensile strength is ⁇ 40N/cm, and the elongation at break ⁇ 12%.
  • the inner sheath 30 is made of high-density polyethylene, the wall thickness of the inner sheath 30 is nominally 2.6mm, and the outer diameter of the inner sheath 30 is nominally 12.5mm.
  • the outer sheath 30 adopts steel tape armor tape 50.
  • the thickness of the steel tape is usually 0.15mm, the peeling strength is ⁇ 6.13N/cm, the tensile strength meets 310 ⁇ 390MPa, the elongation at break ⁇ 15%, and the diameter of the steel tape is 14mm. .
  • the second water blocking tape 40 is filled between the steel tape and the inner sheath 30.
  • the second water blocking tape 40 is a double-sided water blocking tape.
  • the thickness of the water blocking tape is 0.2mm, the width is 50mm, and the expansion rate is ⁇ 10mm/min. Height ⁇ 12mm, tensile strength ⁇ 40N/cm, elongation at break ⁇ 12%.
  • the material of the tear rope 80 is aramid, the tensile strength is ⁇ 150N, the elongation at break is ⁇ 12%, the softening point is ⁇ 238°C, and the melting point is ⁇ 265°C.
  • the material of the outer sheath 60 is a high-density polyethylene material.
  • the thickness of the sheath of the outer sheath 60 is nominally 2.0 mm, and the overall outer diameter of the optical cable is nominally 18.6 mm.
  • the number of cores of the optical fiber 11 is 432, and each microbeam tube 10 contains 12 fibers 11, the outer diameter of the 12-core microbeam tube 10 is 1.3 ⁇ 0.1mm, and the color of the 36 microbeam tubes 10 is blue, Orange, green, brown, gray, white, red, black, yellow, purple, pink, cyan, blue plus 1 black ring, orange plus 1 black ring, green plus 1 black ring, brown plus 1 black ring , Gray plus 1 black ring, white plus 1 black ring, red plus 1 black ring, black plus 1 white ring, yellow plus 1 black ring, purple plus 1 black ring, pink plus 1 black ring, Cyan plus 1 black ring, blue plus 2 black rings, orange plus 2 black rings, green plus 2 black rings, brown plus 2 black rings, gray plus 2 black rings, white plus 2 black rings , Red plus 2 black rings, black plus 2 white rings, yellow plus 2 black rings, purple plus 2 black rings, pink plus 2 black rings, cyan plus 2 black rings.
  • the 36 micro-bundle tubes 10 are combined into 3 bundles by color threads, the number of color threads is 3, the color threads are polyester yarns, and the thickness of the color threads is 0.1 mm.
  • the colors of optical fiber 11 are red, blue, green, yellow, purple, white, orange, gray, brown, black, cyan, and pink.
  • Optical fiber 11 uses G.657A2 optical fiber. After coloring, the coating diameter of optical fiber is 250 ⁇ m ⁇ 15 ⁇ m. SZ twists are used in the microbeam tube 10.
  • Each microbeam tube 10 is filled with fiber cream 12 to ensure that 1 meter of water column, 3 meters of microbeam tube length, no water seepage occurs for 24 hours.
  • the wall thickness of the microbeam tube sheath 13 is generally between 0.1 and 0.2mm.
  • the microbeam tube sheath 13 is made of TPEE material with a density of 1.0 ⁇ 1.4g/cm 3 , and the tensile strength is generally 10 ⁇ 17MPa.
  • the growth rate is usually 200% to 250%.
  • the microbeam tube 10 is twisted with a spiral S in the sheath.
  • the water blocking yarn 70 adopts a linear density of 3000m/kg, a quantity of 26, an expansion rate ⁇ 90ml/g/min, an expansion rate ⁇ 110ml/g, a tensile strength ⁇ 100N, and a breaking elongation ⁇ 15%.
  • the first water blocking tape 20 is a double-sided water blocking tape, the thickness of the water blocking tape is 0.2mm, the width is 42mm, the expansion rate is ⁇ 10mm/min, the expansion height is ⁇ 12mm, the tensile strength is ⁇ 40N/cm, and the elongation at break ⁇ 12%.
  • the material of the inner sheath 30 is high-density polyethylene, the wall thickness of the inner sheath 30 is nominally 2.6 mm, and the outer diameter of the inner sheath 30 is nominally 16.8 mm.
  • the inner sheath 30 adopts steel tape armored tape 50, the thickness of the steel tape is 0.15mm, the peeling strength is ⁇ 6.13N/cm, the tensile strength meets 310 ⁇ 390MPa, the elongation at break ⁇ 15%, the diameter of the steel tape is 18.9mm .
  • the second water blocking tape 40 is filled between the steel tape and the inner sheath 30.
  • the second water blocking tape 40 is a double-sided water blocking tape.
  • the thickness of the second water blocking tape 40 is 0.2mm, the width is 62mm, and the expansion rate is ⁇ 10mm/ min, expansion height ⁇ 12mm, tensile strength ⁇ 40N/cm, breaking elongation ⁇ 12%.
  • the material of the tear rope 80 is aramid, the tensile strength is ⁇ 150N, the elongation at break is ⁇ 12%, the softening point is ⁇ 238°C, and the melting point is ⁇ 265°C.
  • the outer sheath 60 is made of high-density polyethylene.
  • the thickness of the sheath of the outer sheath 60 is nominally 2.0 mm, and the overall outer diameter of the optical cable is nominally 23.0 mm.
  • the lateral pressure test of Examples 1 to 4 At a lateral pressure value of 8000N, the attenuation can be restored after the test;
  • the impact test of Examples 1 to 4 the impact energy is 20J, and the attenuation can be recovered after the test;
  • Torsion test of Examples 1-4 2m cable length, twist ⁇ 180°, twist 5 times, the attenuation can be restored after the test;
  • the water blocking test of Examples 1 to 4 The optical cable has 1 meter of water column and 3 meters of water column for 24 hours without water leakage.
  • a manufacturing method of armored micro-bundle optical cable specifically includes the following steps:
  • the optical fiber pay-off rack is a 12-channel optical fiber pay-off rack, and the tension of the optical fiber pay-off rack is adjusted to 0.5N-0.8N.
  • the sheath material of the microbeam tube is selected, and the extrusion temperature is set; in one embodiment, the temperature is controlled at 130°C to 190°C.
  • the outer diameter of the micro-beam tube is not limited to the above limitation, and can be adjusted according to the number of optical fibers in the micro-beam tube .
  • each 12 microbeam tubes are aggregated into one bundle, the color thread machine is turned on, and the color threads of different colors are evenly wound around the microbeam tubes of every 12 bundles, and they are twisted into the handpiece through the SZ at the same time.
  • the processing temperature of the inner sheath is 170 ⁇ 250°C.
  • the manufactured inner sheath is passed through the steel belt sizing die and pulled to the nose of the machine for use;
  • the processing temperature of the inner sheath is 170-250°C.
  • the tension setting of the above-mentioned equipment is not limited to the above-mentioned limitation, and can be adjusted according to production requirements.
  • Embodiment 5 is a manufacturing method of a 432-core armored micro-bundle optical cable, which is specifically:
  • a layer of polyethylene inner sheath, and the non-metallic reinforcement is wrapped in the inner sheath, and pulled to the traction wheel through a 40°C warm water tank and a room temperature cold water tank; check the outer diameter of 16.8 ⁇ 0.84mm, and the nominal wall thickness of 2.6mm .
  • the tension of the hose is 2 ⁇ 3N; pass the prepared inner sheath through the 18.9mm steel belt sizing die, pass through the machine head together with the steel belt and the second water-blocking belt, and cool by 40°C warm water tank and normal temperature cold water tank, and pull To the traction wheel; check the outer diameter of the optical cable is 23mm, and the nominal wall thickness is 2.0mm.
  • the above-mentioned manufacturing method is not limited to manufacturing the 432-core armored micro-bundle optical fiber cable, but can also manufacture 72-core, 144-core, 288-core, 528-core, 600-core, etc., which can be modified according to requirements.
  • the above-mentioned armored micro-bundle optical cable is suitable for pipeline installation.
  • the internal structure of the optical cable is protected by armored tape. It can also be directly buried in extreme geographic environments to reduce construction costs.
  • the optical cable has tensile, lateral pressure and resistance to Impact performance, the optical cable can meet the requirements of the attenuation change under the temperature change of -40°C ⁇ +70°C.
  • the inner and outer double-layer water-blocking materials ensure the dryness of the optical unit inside the optical cable under high humidity environment. Signal transmission.

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Abstract

一种铠装微束光缆（100），包括微束管（10）以及绞合于微束管（10）的阻水纱（70），铠装微束光缆（100）还包括包覆于微束管（10）和阻水纱（70）外的阻水带（20，40）、内护套（30）、铠装带（50）、外护套（60），阻水带（20，40）包括第一阻水带（20）和第二阻水带（40），第一阻水带（20）设置于微束管（10）与内护套（30）之间，第二阻水带（40）设置于内护套（30）与铠装带（50）之间。铠装微束光缆（100）采用铠装带（50）保护光缆（100）内部结构，光缆（100）具有抗拉伸、抗侧压以及抗冲击的性能，可以在极端的地理环境下，进行直埋施工，降低施工成本，内外双层阻水带（20，40），保证在高湿度环境下，仍能保证光缆（100）内部的干燥性，保证信号传输，其制作方法适用于多种芯数光缆（100）。

Description

铠装微束光缆及制作方法 技术领域
本申请涉及线缆生产领域，尤其涉及一种铠装微束光缆及制作方法。
背景技术
基于微束管的室外光缆相比基于PBT松套管的普通室外光缆，在使用过程中具有更便利的开剥性能，弯曲性能，使得在敷设安装及人员操作过程中，更占优势。
对于大芯数微束光缆需求也日益增多，但是在大芯数管道缆施工过程中，只能采用穿管的方式进行施工，需要提前布置管道资源，如果遇到极端地理环境，无法直接进行直埋施工，大大增加施工成本，同时在此类环境下也无法更好的保护光缆内部光单元；光缆自身无法满足高要求的拉伸、侧压以及冲击等性能，造成了施工和使用过程中对于光缆内部光单元的损伤；在高湿度的地理环境下，光缆内部无法完全阻水，腐蚀内部光单元，造成光缆无法正常工作。
发明内容
有鉴于此，有必要提供一种铠装微束光缆及制作方法，其能够阻水效果好，可以进行直埋施工，降低施工成本。
本申请的实施例提供一种铠装微束光缆，包括微束管以及绞合于所述微束管的阻水纱，所述铠装微束光缆还包括包覆于所述微束管和阻水纱外的阻水带、内护套、铠装带、外护套，所述阻水带包括第一阻水带和第二阻水带，所述第一阻水带设置于所述微束管与内护套之间，所述第二阻水带设置于所述内护套与铠装带之间。
进一步的，在本申请的一些实施例中，所述铠装带包括钢带或铝带，所述 铠装带的定径D 3＝D 4+M 2×2+M 3×2+K 1，其中，D 4为所述内护套的外径，M 2为铠装带的厚度，M 3为阻水带的厚度，K 1为修正系数为1～1.5mm。
进一步的，在本申请的一些实施例中，所述铠装微束光缆还包括色线，所述色线用于将多根所述微束管组合为一束，每束通过不同颜色的所述色线区分，所述色线的厚度为0.1～0.2mm，等效宽度为0.1～2mm。
进一步的，在本申请的一些实施例中，所述内护套的内腔半
径为：
Figure PCTCN2020115131-appb-000001
其中，M 1为色线厚度，N 1为色线数量，N 2为阻水纱等效数量，N 3为微束管数量，D 2为微束管外径，K为修正系数，K取值为0.5～1.5mm。
进一步的，在本申请的一些实施例中，所述铠装微束光缆还包括撕裂绳，所述撕裂绳设置于所述第二阻水带或外护套中。
进一步的，在本申请的一些实施例中，所述铠装微束光缆还包括非金属加强件，所述非金属加强件嵌设于所述内护套中。
进一步的，在本申请的一些实施例中，所述微束管护套的材料包括低烟无卤阻燃聚烯烃材料、聚氯乙烯、热塑性聚酯弹性体中的一种或多种组合。
进一步的，在本申请的一些实施例中，所述微束管包括光纤、纤膏及微束管护套，所述光纤设置于所述微束管护套内，所述纤膏填充于所述微束管护套内。
进一步的，在本申请的一些实施例中，所述光纤在所述微束管护套内为SZ绞或S绞，所述微束管护套的壁厚在0.1～0.2mm。
本申请的实施例还提供一种所述铠装微束光缆的制作方法，包括以下步骤：
设置挤塑温度，在光纤外挤塑微束管；
将多根微束管绞合成多束，每一束作为缆芯并进行色线标记，得到多个标记后的缆芯；
将阻水纱及多个缆芯进行绞合，将第一阻水带包覆于绞合后的阻水纱及缆 芯上，在第一阻水带外挤塑内护套；
将第二阻水带包覆于内护套上，将铠装带包覆于第二阻水带上，在铠装带上挤塑外护套，冷却后得到铠装微束光缆。
上述铠装微束光缆采用铠装带保护光缆内部结构，光缆具有抗拉伸、抗侧压以及抗冲击的性能，可以在极端的地理环境下，进行直埋施工，降低施工成本，内外双层阻水带，保证在高湿度环境下，仍能保证光缆内部干燥性，保证信号传输。
附图说明
图1为本申请一实施方式中的微束管的结构示意图。
图2为本申请一实施方式中的铠装微束光缆的剖面示意图。
图3为本申请一实施1中的铠装微束光缆的剖面示意图。
图4为本申请一实施2中的铠装微束光缆的剖面示意图。
图5为本申请一实施3中的铠装微束光缆的剖面示意图。
图6为本申请一实施4中的铠装微束光缆的剖面示意图。
主要元件符号说明
铠装微束光缆 100
微束管 10
光纤 11
纤膏 12
微束管护套 13
第一阻水带 20
内护套 30
非金属加强件 31
第二阻水带 40
铠装带 50
外护套 60
阻水纱 70
撕裂绳 80
如下具体实施方式将结合上述附图进一步说明本申请。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，当组件被称为“装设于”另一个组件，它可以直接在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“设置于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。本文所使用的术语“或/及”包括一个或多个相关的所列项目的任意的和所有的组合。
本申请的实施例提供一种铠装微束光缆，包括微束管以及绞合于所述微束管的阻水纱，所述铠装微束光缆还包括包覆于所述微束管和阻水纱外的阻水带、内护套、铠装带、外护套，所述阻水带包括第一阻水带和第二阻水带，所述第一阻水带设置于所述微束管与内护套之间，所述第二阻水带设置于所述内护套与铠装带之间。
本申请的实施例还提供一种所述铠装微束光缆的制作方法，包括以下步骤：
设置挤塑温度，在光纤外挤塑微束管；
将多根微束管绞合成多束，每一束作为缆芯并进行色线标记，得到多个标记后的缆芯；
将阻水纱及多个缆芯进行绞合，将第一阻水带包覆于绞合后的阻水纱及缆 芯上，在第一阻水带外挤塑内护套；
将第二阻水带包覆于内护套上，将铠装带包覆于第二阻水带上，在铠装带上挤塑外护套，冷却后得到铠装微束光缆。
上述铠装微束光缆采用铠装带保护光缆内部结构，光缆具有抗拉伸、抗侧压以及抗冲击的性能，可以在极端的地理环境下，进行直埋施工，降低施工成本，内外双层阻水带，保证在高湿度环境下，仍能保证光缆内部的干燥性，保证信号传输。
下面结合附图，对本申请的一些实施方式作详细说明。
本文中“SZ绞”为左右向绞。绞制的绞向有左向和右向之分，左向形似“S”又称S向，右向形似“Z”又称Z向。
请参阅图1，图1所示微束管10包括光纤11、纤膏12及微束管护套13，所述光纤11设置于所述微束管护套13内，所述纤膏12填充于所述微束管护套13内。所述微束管护套13内的光纤至少为一根，所述光纤11通常为单模光纤，所述光纤11的尺寸可以是标称250μm、200μm和180μm，当所述光纤11数量多于一根时，通常通过着色来区分。所述光纤11在所述微束管护套13内通常为SZ绞，也可以是S绞。可以理解的是，所述光纤11的尺寸不限于上述的限定，可以根据具体需求进行调整。在一实施方式中，所述纤膏12的密度在0.5～0.88g/cm 3，含水量≤0.03％，所述纤膏12洁净无杂质，同时对光纤无腐蚀性。所述微束管护套13的壁厚在0.1～0.2mm。所述微束管护套13的材料包括低烟无卤阻燃聚烯烃材料(LSZH)、聚氯乙烯(PVC)、热塑性聚酯弹性体(TPEE)中的一种或多种组合。在其他实施例中，所述微束管护套13的材料还可以包括其他聚烯烃材料。所述微束管护套13的材料密度通常在1～1.5g/cm 3，抗拉强度为10～20MPa，断裂伸长率在100％～500％。
在一实施方式中，所述光纤11的外径标称为250μm时，4芯的所述微束管护套13外径为1.0±0.1mm，6芯的所述微束管护套13外径为1.1±0.1mm，12芯的所述微束管护套13外径为1.3±0.1mm。在另一实施方式中，所述光纤11的外径标称为200μm时，4芯的所述微束管护套13外径为0.9±0.1mm，6芯的 所述微束管护套13外径为1.0±0.1mm，12芯的所述微束管护套13外径为1.2±0.1mm。
请参阅图2，一种铠装微束光缆100包括依次包覆设置的至少一个所述微束管10、第一阻水带20、内护套30、第二阻水带40、铠装带50及外护套60。
在一实施方式中，所述铠装微束光缆100整体尺寸23.0±1.15mm。
在一实施方式中，所述微束管10采用螺旋绞合，可以是SZ绞，也可以是S绞。
在一实施方式中，所述铠装微束光缆100还包括色线和阻水纱70，所述色线用于将6～12根所述微束管10组合为一束，每束通过不同颜色的色线区分后，同所述阻水纱70再绞合在一起，形成缆芯。在一实施方式中，当所述微束管10超过12根时，通过采用喷印不同数量的色块或色环来进行区分。在一实施方式中，所述色线为聚酯纱、芳纶纱或聚酯带，所述色线的厚度为0.1～0.2mm，其等效宽度为0.1～2mm。
在一实施方式中，所述阻水纱70设置于所述微束管10的间隙中，所述阻水纱70采用交联聚丙烯酸脂类膨胀粉复合而成，膨胀速率≥90ml/g/min，膨胀率≥110ml/g，抗张强度≥100N，断裂伸长率≥15％。在一实施方式中，所述阻水纱70的线密度为3000m/kg。可以理解的是，所述阻水纱70的线密度还可以为4000m/kg、5000m/kg、6000m/kg等，不限于上述的设定。
在一实施方式中，所述第一阻水带20和第二阻水带40为双面阻水带，由聚酯纤维非织造布、高吸水膨胀材料及聚酯纤维非织造布依次复合而成，吸水膨胀材料常采用交联聚丙烯酸酯类膨胀粉复合而成，不仅耐热、耐化学性能稳定而且不含酸碱，阻水带厚度≤0.25mm，膨胀速率≥10mm/min，膨胀高度≥12mm，抗张强度≥40N/cm，断裂伸长率≥12％。在一实施方式中，所述第一阻水带20和第二阻水带40的厚度相同或不同。
在一实施方式中，所述铠装微束光缆100还包括撕裂绳80，所述撕裂绳80设置于所述第二阻水带40或外护套60中。在一实施方式中，所述撕裂绳80材质可以是芳纶或聚酯纱，线密度≥333tex，抗拉强度≥150N，断裂伸长率≥12％， 软化点≥238℃，熔点≥265℃。
所述内护套30材料为聚烯烃材料。在一实施方式中，所述内护套30材料为中密度聚乙烯或高密度聚乙烯材料，也可以是低烟无卤阻燃聚烯烃材料。
光缆内腔半径定义为缆芯等效直径加修正系数后的一半，即R＝(D+K)/2，其中R为光缆内腔半径，D为缆芯等效直径，K为修正系数，K一般取值为0.5～1.5mm。在一实施方式中，所述光缆内腔半径即为所述内护套30的内腔半径。
缆芯等效直径D＝(M 1×N 1+D 1 2+N 2×0.43 2) 1/2，其中M 1为色线厚度，N 1为色线数量，N 2为阻水纱等效数量，其为阻水纱总线密度规格除以1420Denier(纤度又称旦数，即旦尼尔数)，D 1为光缆中微束管绞合等效直径，其定义为D 1＝1.16×N 3 1/2×D 2，N 3为微束管数量，D 2为微束管外径。
Figure PCTCN2020115131-appb-000002
所述内护套30内还嵌设有至少一根非金属加强件31。在一实施方式中，所述非金属加强件31为玻璃纤维增强塑料杆(FRP)，密度在2.05～2.15g/cm 3，拉伸及弯曲强度≥1100MPa，拉伸及弯曲弹性模量≥50GPa，断裂伸长率≤4％，吸水率≤0.1％，同时具有较低的热膨胀系数5×10 ～5～6×10 ～5K ～1，耐酸碱及化学性能稳定。在一实施方式中，为保证FRP与所述内护套30间的粘结力，所述非金属加强件31表面涂塑有一层机聚合物，FRP与所述内护套30抽拔力≥50N。
所述铠装带50厚度为0.1～0.2mm，剥离强度≥6.13N/cm，抗张强度满足310～390MPa，断裂伸长率≥15％。在一实施方式中，所述铠装带50包括钢带或铝带。所述铠装带50的定径D 3＝D 4+M 2×2+M 3×2+K 1，D 4为所述内护套30的外径，M 2为铠装带50的厚度，M 3为阻水带的厚度，K 1为修正系数一般取值1～1.5mm。
在一实施方式中，所述外护套60材料的为中密度聚乙烯或高密度聚乙烯材料。
下面将通过具体的实施例对本申请作进一步说明。
实施例1
请参阅图3，光纤11芯数72芯，每根微束管10内设置12根光纤11，12芯微束管10外径为1.3±0.1mm，微束管10颜色为红、蓝、绿、黄、紫、白。光纤11颜色为红、蓝、绿、黄、紫、白、橙、灰、棕、黑、青、粉，光纤11采用G.657A2光纤，着色后光纤的涂层直径为250μm±15μm，光纤11在微束管10内采用SZ绞。每根微束管10内填充纤膏12，保证1米水柱，3米微束管长，24小时不发生渗水。
微束管护套13壁厚一般在0.1～0.2mm之间，微束管护套13材质为TPEE材料，密度通常在1.0～1.4g/cm 3，抗拉强度通常为10～17MPa，断裂伸长率通常为200％～250％。微束管10在护套内采用螺旋S绞合。
阻水纱70采用线密度为3000m/kg，数量5根，膨胀速率≥90ml/g/min，膨胀率≥110ml/g，抗张强度≥100N，断裂伸长率≥15％。
第一阻水带20为双面阻水带，阻水带厚度为0.2mm，宽度为22mm，膨胀速率≥10mm/min，膨胀高度≥12mm，抗张强度≥40N/cm，断裂伸长率≥12％。
内护套30内平行嵌入2根非金属加强件31，非金属加强件31尺寸为1.4±0.1mm。内护套30材料高密度聚乙烯材料，内护套30的护套壁厚标称2.6mm，内护套30外径标称10.9mm。内护套30外采用钢带铠装带50，钢带通常厚度采用0.15mm，剥离强度≥6.13N/cm，抗张强度满足310～390MPa，断裂伸长率≥15％，钢带定径13mm。
钢带和内护套30之间填充第二阻水带40，第二阻水带40为双面阻水带，阻水带厚度为0.2mm，宽度为46mm，膨胀速率≥10mm/min，膨胀高度≥12mm，抗张强度≥40N/cm，断裂伸长率≥12％。
撕裂绳80材质采用芳纶，抗拉强度≥150N，断裂伸长率≥12％，软化点≥238℃，熔点≥265℃。
外护套60的材料高密度聚乙烯材料，外护套60的护套壁厚标称2.0mm， 光缆整体外径标称17.0mm。
实施例2
请参阅图4，光纤11的芯数432芯，每根微束管10内12根光纤11，12芯微束管10外径为1.3±0.1mm，36根微束管10的颜色为蓝、橙、绿、棕、灰、白、红、黑、黄、紫、粉、青绿、蓝色加1根黑色环、橙色加1根黑色环、绿色加1根黑色环、棕色加1根黑色环、灰色加1根黑色环、白色加1根黑色环、红色加1根黑色环、黑色加1根白色环、黄色加1根黑色环、紫色加1根黑色环、粉色加1根黑色环、青绿色加1根黑色环、蓝色加2根黑色环、橙色加2根黑色环、绿色加2根黑色环、棕色加2根黑色环、灰色加2根黑色环、白色加2根黑色环、红色加2根黑色环、黑色加2根白色环、黄色加2根黑色环、紫色加2根黑色环、粉色加2根黑色环、青绿色加2根黑色环。36根微束管10通过色线组合为3束，色线数量为3根，色线为聚酯纱，色线厚度为0.1mm。光纤11颜色为红、蓝、绿、黄、紫、白、橙、灰、棕、黑、青、粉，光纤11采用G.657A2光纤，着色后光纤涂层直径为250μm±15μm，光纤11在微束管10内采用SZ绞。每根微束管10内填充纤膏12，保证1米水柱，3米微束管长，24小时不发生渗水。
微束管护套13壁厚一般在0.1～0.2mm之间，微束管护套13材质为TPEE材料，密度通常在1.0～1.4g/cm 3，抗拉强度通常为10～17MPa，断裂伸长率通常为200％～250％。微束管10在护套内采用螺旋S绞合。
阻水纱70采用线密度为3000m/kg，数量26根，膨胀速率≥90ml/g/min，膨胀率≥110ml/g，抗张强度≥100N，断裂伸长率≥15％。
第一阻水带20为双面阻水带，阻水带厚度为0.2mm，宽度为40mm，膨胀速率≥10mm/min，膨胀高度≥12mm，抗张强度≥40N/cm，断裂伸长率≥12％。
内护套30内平行嵌入2根FRP加强件31，加强件31尺寸为1.6±0.1mm。内护套30的材料高密度聚乙烯材料，内护套30壁厚标称2.4mm，内护套30外径标称16.4mm。内护套30外采用钢带铠装带50，钢带厚度采用0.15mm， 剥离强度≥6.13N/cm，抗张强度满足310～390MPa，断裂伸长率≥15％，钢带定径18.5mm。钢带和内护套30之间填充第二阻水带，第二阻水带40为双面阻水带，第二阻水带40厚度为0.2mm，宽度为60mm，膨胀速率≥10mm/min，膨胀高度≥12mm，抗张强度≥40N/cm，断裂伸长率≥12％。
撕裂绳80材质采用芳纶，抗拉强度≥150N，断裂伸长率≥12％，软化点≥238℃，熔点≥265℃。
外护套60材料采用高密度聚乙烯材料，外护套60的护套壁厚标称2.0mm，光缆整体外径标称22.5mm。
实施例3
请参阅图5，光纤11芯数144芯，每根微束管10内设置12根光纤11，12芯微束管10外径为1.3±0.1mm，微束管10颜色为红、蓝、绿、黄、紫、白、橙、灰、棕、黑、青、粉。光纤11颜色为红、蓝、绿、黄、紫、白、橙、灰、棕、黑、青、粉，光纤11采用G.657A2光纤，着色后光纤的涂层直径为250μm±15μm，光纤11在微束管10内采用SZ绞。每根微束管10内填充纤膏12，保证1米水柱，3米微束管长，24小时不发生渗水。
微束管护套13壁厚一般在0.1～0.2mm之间，微束管护套13材质为TPEE材料，密度通常在1.0～1.4g/cm 3，抗拉强度通常为10～17MPa，断裂伸长率通常为200％～250％。微束管10在护套内采用螺旋S绞合。
阻水纱70采用线密度为3000m/kg，数量9根，膨胀速率≥90ml/g/min，膨胀率≥110ml/g，抗张强度≥100N，断裂伸长率≥15％。
第一阻水带20为双面阻水带，阻水带厚度为0.2mm，宽度为26mm，膨胀速率≥10mm/min，膨胀高度≥12mm，抗张强度≥40N/cm，断裂伸长率≥12％。
内护套30内平行嵌入4根非金属加强件31，非金属加强件31尺寸为1.4±0.1mm。内护套30材料高密度聚乙烯材料，内护套30壁厚标称2.6mm，内护套30外径标称12.5mm。内护套30外采用钢带铠装带50，钢带通常厚度采用0.15mm，剥离强度≥6.13N/cm，抗张强度满足310～390MPa，断裂伸长率 ≥15％，钢带定径14mm。
钢带和内护套30之间填充第二阻水带40，第二阻水带40为双面阻水带，阻水带厚度为0.2mm，宽度为50mm，膨胀速率≥10mm/min，膨胀高度≥12mm，抗张强度≥40N/cm，断裂伸长率≥12％。
撕裂绳80材质采用芳纶，抗拉强度≥150N，断裂伸长率≥12％，软化点≥238℃，熔点≥265℃。
外护套60的材料高密度聚乙烯材料，外护套60的护套壁厚标称2.0mm，光缆整体外径标称18.6mm。
实施例4
请参阅图6，光纤11的芯数432芯，每根微束管10内12根光纤11，12芯微束管10外径为1.3±0.1mm，36根微束管10的颜色为蓝、橙、绿、棕、灰、白、红、黑、黄、紫、粉、青绿、蓝色加1根黑色环、橙色加1根黑色环、绿色加1根黑色环、棕色加1根黑色环、灰色加1根黑色环、白色加1根黑色环、红色加1根黑色环、黑色加1根白色环、黄色加1根黑色环、紫色加1根黑色环、粉色加1根黑色环、青绿色加1根黑色环、蓝色加2根黑色环、橙色加2根黑色环、绿色加2根黑色环、棕色加2根黑色环、灰色加2根黑色环、白色加2根黑色环、红色加2根黑色环、黑色加2根白色环、黄色加2根黑色环、紫色加2根黑色环、粉色加2根黑色环、青绿色加2根黑色环。36根微束管10通过色线组合为3束，色线数量为3根，色线为聚酯纱，色线厚度为0.1mm。光纤11颜色为红、蓝、绿、黄、紫、白、橙、灰、棕、黑、青、粉，光纤11采用G.657A2光纤，着色后光纤涂层直径为250μm±15μm，光纤11在微束管10内采用SZ绞。每根微束管10内填充纤膏12，保证1米水柱，3米微束管长，24小时不发生渗水。
微束管护套13壁厚一般在0.1～0.2mm之间，微束管护套13材质为TPEE材料，密度通常在1.0～1.4g/cm 3，抗拉强度通常为10～17MPa，断裂伸长率通常为200％～250％。微束管10在护套内采用螺旋S绞合。
阻水纱70采用线密度为3000m/kg，数量26根，膨胀速率≥90ml/g/min，膨胀率≥110ml/g，抗张强度≥100N，断裂伸长率≥15％。
第一阻水带20为双面阻水带，阻水带厚度为0.2mm，宽度为42mm，膨胀速率≥10mm/min，膨胀高度≥12mm，抗张强度≥40N/cm，断裂伸长率≥12％。
内护套30内平行嵌入4根非金属加强件31，非金属加强件31尺寸为1.4±0.1mm。内护套30的材料高密度聚乙烯材料，内护套30壁厚标称2.6mm，内护套30外径标称16.8mm。内护套30外采用钢带铠装带50，钢带厚度采用0.15mm，剥离强度≥6.13N/cm，抗张强度满足310～390MPa，断裂伸长率≥15％，钢带定径18.9mm。钢带和内护套30之间填充第二阻水带40，第二阻水带40为双面阻水带，第二阻水带40厚度为0.2mm，宽度为62mm，膨胀速率≥10mm/min，膨胀高度≥12mm，抗张强度≥40N/cm，断裂伸长率≥12％。
撕裂绳80材质采用芳纶，抗拉强度≥150N，断裂伸长率≥12％，软化点≥238℃，熔点≥265℃。
外护套60材料采用高密度聚乙烯材料，外护套60的护套壁厚标称2.0mm，光缆整体外径标称23.0mm。
对各实施例制作的光缆进行测试：
实施例1～4的光纤衰减试验：1310nm≤0.34dB/km、1383nm≤0.25dB/km、1550nm≤0.21dB/km，1625≤0.25dB/km；
实施例1～4的拉伸试验：在3000N、4000N、6000N拉力下，试验后残余附加衰减≤0.05dB；
实施例1～4的侧压试验：8000N侧压力值下，试验后衰减可以回复；
实施例1～4的冲击试验：冲击能量20J，试验后衰减可以回复；
实施例1～4的反复弯曲试验：300mm弯曲半径，试验后衰减可以回复；
实施例1～4的扭转试验：2m缆长，扭转±180°，扭转5次，试验后衰减可以回复；
实施例1～4的高低温性能试验：在-40℃～70℃的温度下，1550nm窗口下光 纤的衰减变化≤0.1dB；
实施例1～4的弯折试验：300mm的弯折直径，不发生弯折；
实施例1～4的阻水试验：光缆1米水柱3米缆长24h不漏水。
一种铠装微束光缆的制作方法，具体包括以下步骤:
制作微束管；
具体为，准备光纤放线架，对光纤放线架进行张力调节测试；在一实施方式中，光纤放线架为12路光纤放线架，光纤放线架张力调节为0.5N～0.8N。
选择微束管的护套材料，并设置挤塑温度；在一实施方式中，温度控制在130℃～190℃。
采用挤管式模具，调节微束管外径1.4±0.1mm，经冷水槽进行冷却；可以理解的是，微束管的外径不限于上述的限定，可以根据微束管内的光纤数量进行调整。
在微束管收线架处检查微束管的壁厚和外径，满足工艺要求即可上盘生产。
制作缆芯；
具体为，准备非金属加强件，穿过牵引导轮，牵引至机头处待用；
将微束管安装至放线架，调节其放线张力为0.8N～1.2N，每12束穿过SZ绞设备牵至机头处待用；
将多根微束管聚合成一束，打开色线机，将不同颜色的色线均匀缠绕在多束微束管周围，同时穿过SZ绞进入机头，得到多个缆芯。在一实施方式中，将每12根微束管聚合成一束，打开色线机，将不同颜色的色线均匀缠绕在每12束的微束管周围，同时穿过SZ绞进入机头。
制备内护套；
具体为，
将阻水纱安装到放线架，调节其张力为1.5～2N，牵出至机头待用；
安装制作好的缆芯，将缆芯与阻水纱穿入绞合设备后，将第一阻水带安装到阻水带放线架并包覆于绞合后的缆芯与阻水纱上，调节第一阻水带张力 2～3N；打开挤塑和牵引，在第一阻水带外挤塑内护套，牵至牵引轮处；在一实施方式中，内护套的加工温度为170～250℃。
检查光缆外径、壁厚及同心度，符合要求即可上盘生产；
制备外护套；
具体为，将制作好的内护套穿过钢带定径模，牵引至机头处待用；
将第二阻水带穿过钢带定径模，调节第二阻水带张力2～3N，牵引至机头待用；
将钢带穿过轧纹机和钢带定径模，调节钢带张力5～10N，牵引至机头待用；
打开挤塑和牵引设备，牵引至牵引轮处；在一实施方式中，内护套的加工温度为170～250℃。
检查光缆外径、壁厚及同心度，符合要求即可上盘生产；
可以理解的是，上述各设备的张力设定不限于上述的限定，可以根据生产需求进行调整。
实施例5为432芯铠装微束光缆制作方法，具体为：
准备12路光纤放线架，对光纤放线架进行张力调节测试，光纤放线架张力调节为0.5N～0.8N，选取模具进行挤塑，使12芯微束管外径为1.4mm±0.1mm，壁厚在0.1～0.2mm。
将1.4mm标称外径的非金属加强件装上放线架，设置放线张力为15～20N；将其穿过放导轮至机头处，将制作的36根微束管安装上专用放线架，调节放线张力为1～1.5N，牵出并穿过SZ绞设备至机头处待用；每12微束管聚合成一束，打开色线机，将不同颜色的色线均匀缠绕在每12束的微束管周围，同时穿过SZ绞设备进入机头，得到3个缆芯。
安装26只3000D阻水纱至阻水纱放线架，调节阻水纱张力2～3N；将阻水纱及缆芯穿入穿入SZ绞设备后，将第一阻水带安装到阻水带放线架，将第一阻水带包覆于绞合后的阻水纱及缆芯上，调节阻水带张力2～3N；打开挤塑机，在第一阻水带外挤塑一层聚乙烯内护套，并将非金属加强件包覆在内护套内， 通过40℃温水槽和室温冷水槽牵至牵引轮处；检查外径16.8±0.84mm，壁厚标称2.6mm。
将钢带穿过轧纹机和钢带定径模和机头，调节钢带张力5～10N；打开挤塑机和牵引设备；将第二阻水带穿过钢带定径模，调节阻水带张力2～3N；将准备好的内护套穿过18.9mm钢带定径模，随钢带和第二阻水带一同经过机头，通过40℃温水槽和常温冷水槽冷却，牵至牵引轮处；检查光缆外径23mm，壁厚标称2.0mm。
可以理解的是，上述制作方法不限于制作432芯的铠装微束光缆，还可以制作72芯、144芯、288芯、528芯、600芯等，可以根据需求进行更改。
上述铠装微束光缆，适用于管道安装，采用铠装带保护光缆内部结构，也可以在极端的地理环境下，进行直埋施工，降低施工成本，光缆具有抗拉伸、抗侧压以及抗冲击的性能，光缆可以满足-40℃～+70℃的温度变化下，衰减的变化要求，内外双层阻水材料，保证在高湿度环境下，仍能保证光缆内部光单元的干燥性，保证信号传输。
本技术领域的普通技术人员应当认识到，以上的实施方式仅是用来说明本申请，而并非用作为对本申请的限定，只要在本申请的实质精神范围内，对以上实施方式所作的适当改变和变化都落在本申请要求公开的范围内。

Claims (10)

  1. 一种铠装微束光缆，包括微束管以及绞合于所述微束管的阻水纱，其特征在于：所述铠装微束光缆还包括包覆于所述微束管和阻水纱外的阻水带、内护套、铠装带、外护套，所述阻水带包括第一阻水带和第二阻水带，所述第一阻水带设置于所述微束管与内护套之间，所述第二阻水带设置于所述内护套与铠装带之间。
  2. 如权利要求1所述的铠装微束光缆，其特征在于：所述铠装带包括钢带或铝带，所述铠装带的定径D 3＝D 4+M 2×2+M 3×2+K 1，其中，D 4为所述内护套的外径，M 2为铠装带的厚度，M 3为阻水带的厚度，K 1为修正系数为1～1.5mm。
  3. 如权利要求1所述的铠装微束光缆，其特征在于：所述铠装微束光缆还包括色线，所述色线用于将多根所述微束管组合为一束，每束通过不同颜色的所述色线区分，所述色线的厚度为0.1～0.2mm，等效宽度为0.1～2mm。
  4. 如权利要求3所述的铠装微束光缆，其特征在于：所述内护套的内腔半径为：
    Figure PCTCN2020115131-appb-100001
    其中，M 1为色线厚度，N 1为色线数量，N 2为阻水纱等效数量，N 3为微束管数量，D 2为微束管外径，K为修正系数，K取值为0.5～1.5mm。
  5. 如权利要求1所述的铠装微束光缆，其特征在于：所述铠装微束光缆还包括撕裂绳，所述撕裂绳设置于所述第二阻水带或外护套中。
  6. 如权利要求1所述的铠装微束光缆，其特征在于：所述铠装微束光缆还包括非金属加强件，所述非金属加强件嵌设于所述内护套中。
  7. 如权利要求1所述的铠装微束光缆，其特征在于：所述微束管护套的材料包括低烟无卤阻燃聚烯烃材料、聚氯乙烯、热塑性聚酯弹性体中的一 种或多种组合。
  8. 如权利要求1所述的铠装微束光缆，其特征在于：所述微束管包括光纤、纤膏及微束管护套，所述光纤设置于所述微束管护套内，所述纤膏填充于所述微束管护套与所述光纤之间。
  9. 如权利要求8所述的铠装微束光缆，其特征在于：所述光纤在所述微束管护套内为SZ绞或S绞，所述微束管护套的壁厚在0.1～0.2mm。
  10. 一种如权利要求1-9任意一项所述铠装微束光缆的制作方法，其特征在于，包括以下步骤：
    设置挤塑温度，在光纤外挤塑微束管；
    将多根微束管绞合成多束，每一束作为缆芯并进行色线标记，得到多个标记后的缆芯；
    将阻水纱及多个缆芯进行绞合，将第一阻水带包覆于绞合后的阻水纱及缆芯上，在第一阻水带外挤塑内护套；
    将第二阻水带包覆于内护套上，将铠装带包覆于第二阻水带上，在铠装带上挤塑外护套，冷却后得到铠装微束光缆。
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