Full-dry nonmetal self-supporting skeleton-type optical cable

Abstract

The invention relates to a full-dry nonmetal self-supporting skeleton-type optical cable, and the optical cable comprises an external sheath and a skeleton. The periphery of the skeleton is provided with longitudinal fiber slots at intervals, and the interior of each longitudinal fiber slot is provided with an optical communication unit. The optical fiber is characterized in that the center of the skeleton is provided with a nonmetal central reinforcing part in a passing-through manner; the periphery of the skeleton is sequentially wrapped by a waterproof part and a nonmetal reinforcing part; and the outermost layer is wrapped by the external sheath. The beneficial effects of the invention are that 1, the optical cable employs a skeleton-type optical cable structure, and the interior and exterior of the skeleton are provided with the nonmetal reinforcing parts, thereby enabling the optical cable to be high in strength, good in tensile property, and large in span; 2, the fiber filling density is high, and the relative diameter of the optical fiber is small; 3, the optical cable is easy for the setting of a separating window, and optical fibers can be separated and extracted from the separating window; the construction and connection are convenient, and a full-dry structure is more convenient for construction, connection and maintenance; 4, an all-dielectric structure can be used in a power transmission line, is resistant to lightning stroke, cannot be affected by electromagnetic interference, can be laid in a live-line manner, facilitates the separating and winding of the optical fibers, is high in laying success rate, and is low in cable consumption.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to an all-dry non-metallic self-supporting skeleton optical cable. Background technique [0002] At present, in power lines, the overhead optical cables laid on high-voltage transmission lines are mainly all-dielectric self-supporting optical cables, that is, ADSS (All Dielectric Self-supporting) optical cables. The casing containing the optical fiber is filled with water-blocking ointment. This kind of optical cable not only has a complicated structure, but also has a small volume ratio of the optical fiber, low strength and high manufacturing cost. Cleaning and cleaning the ointment brings inconvenience to the construction connection, and also increases the construction difficulty and cost. [0003] With the advancement of 4G network construction, the demand for the construction of the backbone network to the metropolitan area network and the access network is increasing, an...

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Problems solved by technology

[0002] At present, in power lines, the overhead optical cables laid on high-voltage transmission lines are mainly all-dielectric self-supporting optical cables, that is, ADSS (All Dielectric Self-supporting) optical cables. The casing containing the optical fiber is filled with water-blocking ointment. This kind of optical cable not only has a complicated structure, but also has a small volume ratio of the optical fiber, low strength and high manufacturing cost. The cleaning and cleaning of the ointment brings inconvenience to the construction connection and increases the difficulty and cost of the construction

[0003] With the advancement of 4G network construction, the demand for the construction of the backbone network to the metropolitan area network and the access network is increasing, and fiber-to-the-home is becoming more and more popular. In the fiber-to-the-home project, the laying of optical cables is a very important link. It is necessary to create a separation window, which will reduce its tensile strength and cause loss of optical fibers for ordinary layer stranded aerial optical cables. In addition, because the cable is filled with grease, it will bring inconvenience to the construction and connection and cause environmental pollution.

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