Indoor circular optical cable and manufacturing method thereof

A kind of optical cable and circular technology, which is applied in the field of indoor circular optical cable and its production, can solve the problems of complete damage of optical cable, difficulty in meeting the specific requirements of fire protection, interruption of line communication, etc., and achieve small diameter, good insulation performance, and good durability The effect of combustion performance

Pending Publication Date: 2019-05-21
TONGDING INTERCONNECTION INFORMATION CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the requirements on diameter and weight, the matching flame-retardant sheath produced by the existing technology is often difficult to meet the specific requirements for fire protection under high-temperature flames, resulting in damage to the integrity of the optical cable itself, which in turn leads to the communication of the line in the event of a fire. to interrupt

Method used

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  • Indoor circular optical cable and manufacturing method thereof
  • Indoor circular optical cable and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 Indoor circular optical cable X1

[0031] The inner center of the indoor round optical cable X1 is a basic color fiber without coating. LSZH optical fiber tight sleeve with a thickness of 0.2mm is wrapped around the optical fiber. The optical fiber tight sleeve is wrapped with 8 pieces of 1610dtex type aramid yarn. The outside of the aramid yarn is wrapped with a ceramicized fireproof and refractory composite tape with a thickness of 0.05mm and a width of 12mm at an overlapping rate of 15% to form an isolation layer. The outside of the isolation layer is wrapped with a single-sided phlogopite mica tape with a thickness of 0.05mm and a width of 20mm at an overlapping rate of 15% to form a fireproof layer. The outside of the fireproof layer is a low-smoke, halogen-free, flame-retardant polyolefin sheath with a thickness of 0.5mm extruded.

[0032] The outer diameter of the tight sleeve layer of the indoor circular optical cable X1 is 0.6mm, the outer diame...

Embodiment 2

[0035] Embodiment 2 Indoor circular optical cable X2

[0036] The inner center of the indoor round optical cable X3 is a colorless optical fiber without coating. Consists of 0.35mm thick LSZH fiber tight sleeve on the outside of the fiber. The outer part of the optical fiber tight sleeve consists of 12 pieces of 1500dtex type aramid yarn. The outer part of the aramid yarn is wrapped with a ceramicized fireproof and refractory composite tape with a thickness of 0.3mm and a width of 12mm with an overlap rate of 35% to form an isolation layer. The outside of the isolation layer is wrapped with a single-sided phlogopite mica tape with a thickness of 0.1mm and a width of 14mm with an overlapping rate of 18% to form a fireproof layer. The outside of the fireproof layer is a low-smoke, halogen-free, flame-retardant polyolefin sheath with a thickness of 0.5mm extruded.

[0037] The outer diameter of the tight sleeve layer of the indoor circular optical cable X1 is 0.4mm, the outer ...

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Abstract

The invention relates to an indoor circular optical cable and a manufacturing method thereof. The indoor circular optical cable comprises tight-buffered optical fibers, an auxiliary reinforcing member, an isolation layer, a fireproof layer and a flame-retardant outer sheath, wherein the auxiliary reinforcing member wraps the tight-buffered optical fibers, the auxiliary reinforcing member is wrapped with a ceramic fireproof and fireproof composite belt to form the isolation layer, the isolation layer is wrapped with a mica tape to form the fireproof layer, and the fireproof layer is extruded toform the flame-retardant outer sheath. The indoor circular optical cable disclosed by the invention has excellent high temperature resistance, combustion resistance and insulation performance, can ensure smooth communication at a high temperature of 3000 DEG C or above and under the condition of a fire, and is suitable for being laid and used in a strong electromagnetic environment.

Description

technical field [0001] The invention belongs to the field of optical cable manufacturing technology and equipment, in particular to an indoor circular optical cable and a manufacturing method thereof. Background technique [0002] As the society pays more attention to fire safety and hidden dangers, it will inevitably put forward higher requirements for the fire and flame retardant performance of our indoor optical cables. In the event of a fire, flammable cables in indoor confined spaces will become the biggest accomplice to the spread of fire. The large amount of dense smoke it produces makes it a big problem to judge the fire source and quickly extinguish the fire. Indoor round optical cable, as a commonly used incoming optical cable, has the characteristics of small diameter and light weight, and is widely used in the connection of pigtails, jumpers or other optical devices. However, due to the requirements for diameter and weight, the matching flame-retardant sheath p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
Inventor 沈小平施双宝刘玉琴李忠明杜华雪张瑞
Owner TONGDING INTERCONNECTION INFORMATION CO LTD
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