All-dielectric large-core-number high-density micro pipeline wiring cable and manufacturing method thereof

Abstract

The invention relates to an all-dielectric large-core-number high-density micro pipeline wiring cable and a manufacturing method of the all-dielectric large-core-number high-density micro pipeline wiring cable and belongs to the technical field of optical communication cable manufacturing. The all-dielectric large-core-number high-density micro pipeline wiring cable is a data communication optical cable and is suitable for various laying conditions of outdoor pipelines, overheads, road surfaces and the like and can be used for environments of long-distance communication, interoffice communication, indoor introduction and the like. The all-dielectric large-core-number high-density micro pipeline wiring cable has the advantages of being large in core number, small in outer diameter, high in tensile strength, high in side-pressure-resisting capability, good in water blocking effect and bending capability, easy to construct, easy to bifurcate and the like. The all-dielectric large-core-number high-density micro pipeline wiring cable is composed of a water blocking type optical fiber micro pipe, large line density water blocking yarn, a water blocking band, glassfiber reinforced plastic rods, aramid fibers, a tearing rope and an outer protection sleeve. The water blocking type optical fiber micro pipe is twisted to form a water blocking type optical fiber micro pipe cable core, the outer portion of the water stopping type optical fiber micro pipe cable core is longitudinally wrapped through the double-face insulating type water blocking band, the high-strength aramid fibers and the tearing rope serve as strengthening parts, the two glassfiber reinforced plastic rods are adopted in the outer layer to be strengthened in the outer protection sleeve in parallel, and the tensile performance of the all-dielectric large-core-number high-density micro pipeline wiring cable is enhanced.

Description

technical field [0001] The invention relates to an all-dielectric, large-core, high-density micro-pipeline wiring optical cable and its manufacturing method, which is a pipeline wiring optical cable with dense optical fiber cores, miniaturized optical cable size, excellent bending performance, and simplified construction. The basic optical fiber unit adopts The flexible tube is based on the advanced design concept of Europe and the United States, and it is fully localized. It is suitable for the main optical cable wiring or outdoor lead-in wiring. The laying conditions are not limited. In the medium and large cities at home and abroad where the surface construction resources are increasingly tight, the pipeline laying method is the most suitable. suitable. In addition to meeting the transmission performance required for communication, the optical cable also takes into account great lateral pressure resistance and cross-sectional water resistance, and effectively improves on-si...

AI Technical Summary

Problems solved by technology

[0004] Secondly, when construction is carried out at the access end of optical fiber ring networks in many cities, traditional outdoor optical cables have gradually shown many disadvantages

Optical cable stripping is the first step in welding and other construction activities. Professional tools such as wallpaper cutters, diagonal pliers, and optical cable cutting knives are generally required for ordinary outdoor optical cable stripping. When cutting sheaths and PBT tubes, it is easy. Injury to fingers and optical fibers has certain safety hazards, and the work efficiency is low;

[0005] PBT tubes have always been known for their hard tube walls that can protect the internal optical fibers well. However, in areas where the construction end is becoming more and more complicated, due to the hard texture, they cannot withstand a small bending radius, which is very difficult. It is easy to break the loose tube, and in severe cases, the fiber will break. In this case, even if the fiber is continuous, the attenuation will increase under bending conditions due to the poor bending performance of the G652D fiber used in ordinary outdoor optical cables. When the transmission distance is long, it will affect the opening of customer services, and when the remaining construction cables are stored in the fiber distribution box, there will be a risk of increased fiber attenuation due to the contraction of the PBT tube, especially in medium-span access when

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