Non-metal armored three-sheath self-supporting rat-proof optical cable and preparation process thereof

Abstract

A non-metal armored three-sheath self-supporting rat-proof optical cable comprises a cable core, a sheath layer, a force bearing element and a rat-proof layer, the sheath layer comprises an inner sheath, a middle sheath and an outer sheath, the inner sheath, the middle sheath and the outer sheath are sequentially arranged on the outer side of the cable core, the force bearing element is arranged between the inner sheath and the middle sheath, and the rat-proof layer is arranged between the middle sheath and the outer sheath. The optical cable is simple and reasonable in structural design, thethree-layer nonmetal sheath structure is adopted, and the force bearing element is arranged between the inner sheath and the middle sheath, so the tensile property of the self-supporting optical cableis remarkably enhanced; and moreover, the rat-proof layer is arranged between the middle sheath and the outer sheath, so that a better rat-proof effect can be achieved. The preparation process is simple in operation and low in process cost, and the optical cable prepared by the method has remarkable tensile property and bending property, light weight, simple construction operation and easy laying.

Description

technical field [0001] The invention relates to the technical field of optical cables, in particular to a non-metallic armored three-sheath self-supporting mouse-proof optical cable and a preparation process. Background technique [0002] The optical fiber transmission communication system is one of the most commonly used transmission systems in the current communication system. In recent years, with the rapid development of the power grid, the number of optical cables and substation nodes has increased rapidly, and optical communication technology has been widely used in the power system. Due to the short construction period of ordinary aerial optical cables, good mechanical, moisture-proof and waterproof performance, can adapt to different environments, and easy maintenance, the application of ordinary aerial optical cables is very common. However, in recent years, the phenomenon of common overhead optical cables being bitten by rats has also increased day by day, which ha...

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Problems solved by technology

However, in recent years, the phenomenon of common overhead optical cables being bitten by rats has also increased day by day, which poses a great threat to the safe and stable operation of the power communication network, and finally leads to damage, scrapping and loss of use value of optical cables.

[0003] At present, the traditional anti-rodent type of optical cable often adopts chemical anti-rat method and physical anti-rat method. The usual chemical anti-rat method often adds some strong irritating chemical substances to the sheath material to prevent the optical cable from being bitten by rodents. However, there are hidden dangers of chemical reagent volatilization, failure and environmental pollution during actual use; in addition, the usual physical method refers to adding hard materials that cannot be destroyed by rodents in the optical cable to ensure that the inner layer of the optical cable is not damaged

For example, metal armored optical cable, although the metal protective layer can prevent rodents from biting to a certain extent, but this hard metal armored layer also reduces the bending performance of the optical cable to a certain extent, making it difficult to lay

Moreover, according to the research, once the metal armor layer of the optical cable is bitten, the exposed metal layer is very easy to chemically corrode with the external environment, resulting in the complete loss of the rodent-proof ability of the optical cable.

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