All-dry parallel wiring cable

Abstract

The invention discloses an all-dry parallel wiring cable, and relates to the technical field of communication cable manufacturing. The all-dry parallel wiring cable comprises optical fibers, a loose tube, water blocking yarn, galvanized stranded wires, an aramid fiber and an outer sheath. The optical fibers are arranged in the loose tube, the space between the optical fibers and the loose tube is filled with the water blocking yarn, the outer layer of the loose tube is longitudinally wrapped by the aramid fiber, the loose tube is arranged in the outer sheath, the aramid fiber is arranged between the loose tube and the outer sheath, and the galvanized stranded wires are symmetrically embedded in the outer sheath. According to the all-dry parallel wiring cable, laying space is greatly saved, meanwhile, good tensile resistance and compressive resistance are achieved, the intensity of the optical fibers can be improved, and the all-dry parallel wiring cable is widely suitable for being laid indoors and outdoors.

Description

technical field [0001] The invention relates to the technical field of communication optical cable manufacturing, in particular to an all-dry parallel wiring optical cable. Background technique [0002] With the development of science and technology, it has become a trend for FTTH to enter thousands of households. FTTH is an optical fiber directly to the home. It refers to the installation of optical network units at residential users or enterprise users. FTTH not only provides greater bandwidth, but also enhances the transparency of the network for data formats, rates, wavelengths and protocols, and relaxes the requirements for environmental conditions and power supply. Maintenance and installation are simplified and will revolutionize the entire communications industry. [0003] With the continuous development of FTTH, access network optical cables and distribution optical cables have begun to be laid and used in large areas. At present, multi-core indoor optical cables a...

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Problems solved by technology

[0003] With the continuous development of FTTH, access network optical cables and distribution optical cables have begun to be laid and used in large areas. At present, multi-core indoor optical cables and outdoor central tube overhead and duct optical cables are mostly used for FTTH wiring, but outdoor central tubes are parallel. Optical cables and distribution optical cables mainly have the following disadvantages: (1) Due to the large number of optical cables and the large outer diameter of optical cables, more pipeline resources are occupied, and the existing pipeline resources are relatively tight; (2) The outdoor central tube type overhead The optical cable has fiber paste and ointment, which is inconvenient for construction, and the outer diameter of the optical cable is large, which takes up more pipeline resources; (3) When laying indoor distribution optical cables, the outer diameter is relatively large, which takes up more resources and is not waterproof. function of

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