Flame-retardant fireproof optical cable

By setting up water channels and temperature-sensitive fibers on the optical cable, the method of slowing down the surface temperature of the optical cable through flowing water when a fire occurs is achieved, the problem of insufficient flame retardant and fire resistance of the existing optical cable is solved, and the fire resistance and service time of the optical cable are improved.

CN222784606UActive Publication Date: 2025-04-22SICHUAN TIANFU JIANGDONG TECH CO LTD
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Patent Information

Application Number
CN202421720723.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-19
Publication Date
2025-04-22
Estimated Expiration
2034-07-19

AI Technical Summary

Technical Problem

The flame-retardant and fire-resistant performance of existing optical cables is poor, and it cannot effectively ensure that the optical cable can continue to transmit signals when a fire occurs, and supports emergency communication and rescue work.

Method used

By setting up water channels and temperature-sensitive fibers on the optical cable, the water channels of the optical cable are connected to the water pipe after construction, and water is not available during normal operation. When the temperature-sensitive fiber detects the external high temperature, the water channels are allowed to be opened. The flowing water will take away the surface temperature of the optical cable, slowing down the time when the optical cable reaches the combustible temperature.

Benefits of technology

It improves the flame retardant and fire-resistant performance of optical cables, extends the service time of optical cables, and effectively solves the problem of poor flame retardant and fire-resistant performance of existing optical cables.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222784606U_ABST
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Abstract

The utility model discloses a flame-retardant and fire-resistant optical cable, belongs to the technical field of optical cables, and aims to provide a flame-retardant and fire-resistant optical cable to solve the problem of poor flame-retardant and fire-resistant performance of the existing optical cable. The optical cable comprises a central reinforcing core, the central reinforcing core is sleeved with a double-sided plastic-coated corrugated steel strip, the double-sided plastic-coated corrugated steel strip is sleeved with an inner sheath, the inner sheath is sleeved with a flame-retardant sheath, and a plurality of optical fiber assemblies are arranged in the double-sided plastic-coated corrugated steel strip and located around the central reinforcing core. Cable paste is arranged in the double-face plastic-coated corrugated steel belt, a plurality of water channel channels are formed in the inner sheath in the length direction of the inner sheath, and a temperature sensing optical fiber is installed on the flame-retardant sheath. The optical fiber assembly comprises a loose tube sleeve, a plurality of optical fibers are arranged in the loose tube sleeve, and fiber paste is arranged in the loose tube sleeve. And a plastic-coated layer is arranged on the central reinforcing core. The utility model is suitable for the flame-retardant fireproof optical cable.
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