Bulletproof optical cable and preparation method thereof

Abstract

The invention discloses a bulletproof optical cable which comprises a water-blocking tape, an optical cable sub-unit, a loose tube, a water-blocking yarn, an armor layer, a water-blocking tape, an aramid tape and an outer sheath. The optical cable sub-unit comprises a sub-unit sheath layer and an optical fiber bundle. The water-blocking tape longitudinally wraps the sub-unit sheath layer. The loose tube sleeves the water-blocking tape through extrusion molding. The water-blocking yarn is attached to the outer wall of the loose tube. The armor layer adopts FRP strips, and the FRP strips wrap the loose tube and also wrap the water-blocking yarn. The water-blocking tape wraps the armor layer, the aramid tape wraps the water-blocking tape, and the outer sheath sleeves the aramid tape through extrusion molding. The loose tube wrapped by the FRP strips can play a very good role in preventing rats. The aramid tape wraps the FRP strips to achieve a good bulletproof effect, and the production efficiency can be greatly improved by adopting the wrapped aramid tape. The optical cable is simple in structure, light in weight, small in diameter, high in optical fiber density and good in tension 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

Images