A kind of bulletproof optical cable and its preparation method

Abstract

The invention discloses a bulletproof optical cable, which comprises a water blocking tape, an optical cable subunit, a loose tube, a water blocking yarn, an armor layer, a water blocking tape, an aramid fiber tape and an outer sheath, and the optical cable subunit includes a subunit sheath layer and optical fiber bundle, the water-blocking tape longitudinally covers the subunit sheath layer, the loose tube is sleeved on the water-blocking tape through extrusion molding, the water-blocking yarn is attached to the outer wall of the loose tube, and the armor layer is made of FRP strips , the FRP strip is wrapped around the loose tube and also wrapped with the water-blocking yarn, the water-blocking tape is wrapped around the armor layer, the aramid tape is wrapped around the water-blocking tape, and the outer sheath is set on the aramid tape through extrusion molding. The FRP bar of the present invention is wrapped with a loose casing, which can play a very good role in preventing rats. The FRP strip wrapped with aramid tape can play a very good bulletproof effect, and the use of wrapped aramid tape can greatly improve the production efficiency. The optical cable of the invention has the advantages of simple structure, light weight, small diameter, high fiber density and good tensile performance.

Description

technical field [0001] The invention belongs to the field of optical cables, and more specifically relates to a bulletproof optical cable and a preparation method thereof. Background technique [0002] Commonly used aerial optical cables often have birds standing on the optical cables. People shooting birds on the optical cables will damage the optical cables. Shooting on the optical cables will generally cause the optical fibers to break and directly cause communication interruptions, which will cause great economic losses. A kind of high-efficiency bulletproof optical cable arises at the historic moment, and CN107422435A discloses a kind of ultra-soft and temperature-resistant bulletproof optical cable and its production method. There is a layer of plastic foam layer, the outer side of the plastic foam layer is provided with a layer of bulletproof armor, and the outer side of the bulletproof armor layer is provided with an outer sheath layer; the cable core includes optica...

AI Technical Summary

Problems solved by technology

[0002] Commonly used aerial optical cables often have birds standing on the optical cables. People shooting birds on the optical cables will damage the optical cables. Shooting on the optical cables will generally cause the optical fibers to break and directly cause communication interruptions, which will cause great economic losses. A kind of high-efficiency bulletproof optical cable arises at the historic moment, and CN107422435A discloses a kind of ultra-soft and temperature-resistant bulletproof optical cable and its production method. There is a layer of plastic foam layer, the outer side of the plastic foam layer is provided with a layer of bulletproof armor, and the outer side of the bulletproof armor layer is provided with an outer sheath layer; the cable core includes optical fiber units twisted together by SZ twisting method and the center Strength member, the optical fiber unit includes a coated optical fiber and a loose tube, the loose tube wraps the outside of the coated fiber, the central strength member includes a flexible strength member and a PE sheath layer wrapped outside the flexible strength member, and the outer sheath layer is a corrugated tube jacket

The bulletproof armor layer is made of braided aramid. Although this structure can be bulletproof, the production efficiency of braided aramid is low. The cable core is stranded with SZ, the diameter of the optical cable is too large, and the loose tube uses ointment to block water, which affects the construction efficiency and It is not environmentally friendly, and when the optical cable is introduced into the ground, the anti-rodent performance of the optical cable is not good

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