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Bunchy armored optical cable and preparation method thereof

A technology for armored optical cables and beams, which is applied in the field of bundled armored optical cables and its preparation, can solve the problems of complex stainless steel hose processing technology, lower bending performance of optical cables, and unnatural bending of optical cables, so as to achieve easy control of process parameters , Reduce waterproof performance and improve stability

Pending Publication Date: 2021-01-08
TONGLING CITY TONGDOU SPECIAL CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the stainless steel hose is installed inside the optical cable, and the processing technology is complicated, and the optical cable cannot be bent naturally when the metal hard tube is used, and the metal layer is arranged on the inner layer of the optical cable, making the outer sheath easy to damage
[0003] With the improvement of the transmission distance of the photoelectric composite optical cable, people have higher requirements for the strength and extrusion resistance of the optical cable, so that the optical cable can ensure that the optical fiber will not be damaged under a certain range of extrusion, and it is also necessary to maintain good bending performance, so that the photoelectric composite optical cable is easy to roll and lay, but in order to ensure good strength, the photoelectric composite optical cable in the prior art often uses thick copper wires as the reinforcement structure, and at the same time uses a metal wire braided mesh sleeve as the metal The shielding layer of the wire further reduces the bending performance of the optical cable and increases the weight and production cost of the optical cable

Method used

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  • Bunchy armored optical cable and preparation method thereof
  • Bunchy armored optical cable and preparation method thereof
  • Bunchy armored optical cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for preparing a bundled armored optical cable, comprising the following steps:

[0042] S1. Select an optical fiber with excellent transmission characteristics and qualified tension, and use a pulling device to pull the bare optical fiber. Adjust the tension of the receiving and unwinding fiber and the tension of the receiving and unwinding wire to 45g. The bare optical fiber passes through the ink device and the UV curing furnace in sequence. The full color spectrum for coloring;

[0043] S2. Use high modulus, high strength, low shrinkage polymer sleeve molding process to form loose tube. The extrusion temperature range is 160 ℃, and the constant temperature of the ointment is more than 24 hours. The optical fiber passes through the movable warm water tank, the movable warm water tank and the mold The distance between the sleeves is 5cm, the temperature of warm water is 55°C, and the traction range of the excess length is 0.8‰ of the twisted layer cable. The ...

Embodiment 2

[0047] A method for preparing a bundled armored optical cable, comprising the following steps:

[0048] S1. Select an optical fiber with excellent transmission characteristics and qualified tension, and use a pulling device to pull the bare optical fiber. Adjust the tension of the receiving and unwinding fiber and the tension of the receiving and unwinding wire to 30g. The bare optical fiber passes through the ink device and the UV curing furnace in sequence. The full color spectrum for coloring;

[0049] S2. Use high modulus, high strength, low shrinkage polymer sleeve molding process to form loose tube, extrusion temperature range is 270 ℃, ointment constant temperature is more than 24 hours, optical fiber passes through movable warm water tank, movable warm water tank and mold The distance between the sleeves is 5cm, the temperature of warm water is 60°C, and the traction range of the excess length is 0.6‰ of the layer twisted cable. The optical fiber is cooled in a cold wa...

Embodiment 3

[0053] A method for preparing a bundled armored optical cable, comprising the following steps:

[0054] S1. Select an optical fiber with excellent transmission characteristics and qualified tension, and use a pulling device to pull the bare optical fiber. Adjust the tension of the receiving and unwinding fiber and the tension of the receiving and unwinding wire to 50g. The bare optical fiber passes through the ink device and the UV curing furnace in sequence. The full color spectrum for coloring;

[0055] S2. The loose tube is molded by high modulus, high strength and low shrinkage polymer sleeve molding process. The extrusion temperature range is 255°C, and the constant temperature of the ointment is more than 24 hours. The optical fiber passes through the movable warm water tank, the movable warm water tank and the mold The distance between the sleeves is 5cm, the temperature of warm water is 50°C, and the traction range of the excess length is 0.6‰ of the twisted layer cabl...

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Abstract

The invention discloses a bunchy armored optical cable and a preparation method thereof; the optical cable comprises a cable core and a protective layer, the cable core is composed of a central reinforcer and a loose tube, a plurality of optical fibers are arranged in the loose tube, the loose tube is twisted around the central reinforcer, the cable core is longitudinally wrapped with a water-blocking tape, and the protective layer is sequentially provided with an inner sheath, an armor layer and an outer sheath from inside to outside. The bunchy armored optical cable is high in strength, goodin stretching resistance and bending resistance, good in waterproof performance and wide in application range, the bunchy armored optical cable is simple in preparation process, process parameters are easy to control, and the stability of product performance is improved.

Description

technical field [0001] The invention relates to the field of armored optical cables, in particular to a beam-shaped armored optical cable and a preparation method thereof. Background technique [0002] Armored optical fiber cables have important applications in telecommunication optical fiber long-distance lines and primary and secondary trunk line transmission. The general armored optical cable structure is tight-packed optical fiber + stainless steel hose (for compression, bending, and rat bite prevention) + stainless steel braided wire (for torsion resistance) + outer sheath. The advantages are high tensile strength, high compression resistance, rat bite and bird peck resistance; it can resist improper torsional bending damage; it can adapt to various harsh environments and man-made damage. The disadvantage is that the process of installing stainless steel hose inside the optical cable is complicated, and the optical cable cannot be bent naturally if the metal hard tube ...

Claims

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Application Information

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IPC IPC(8): G02B6/44
CPCG02B6/443G02B6/4432G02B6/4479G02B6/4486G02B6/44384
Inventor 赵庆
Owner TONGLING CITY TONGDOU SPECIAL CABLE CO LTD