Fireproof, moistureproof and corrosion-resistant photoelectric composite cable

Abstract

The present invention provides a fireproof, moistureproof and corrosion-resistant photoelectric composite cable, comprising an optical fiber (1), an optical fiber filling gel (2), a steel armour sheath layer (3), a medium filling layer (4), a corrosion-resistant asphalt layer (5), a fireproof layer (7), and an outer sheath layer (8) which are successively arranged from inside to outside; wherein a shielding layer (6) is wrapped in the corrosion-resistant asphalt layer (5), the shielding layer (6) comprises an internal layer copper plastic composite belt and an external layer aluminum magnesium braided belt; the medium filling layer (4) comprises a fiber belt provided with micropores, a flame-retardant layer and a waterproof layer, the flame-retardant layer, the fiber belt and the waterproof layer are adhered successively.

Description

technical field [0001] The invention relates to the technical field of communication, and provides a fireproof, moistureproof, corrosion-resistant photoelectric composite cable. Background technique [0002] In March 1897 (the 22nd year of the reign of Emperor Guangxu of the Qing Dynasty), China's first underground power cable was put into use in Shanghai. The 2,700-meter-long rubber-insulated and lead-sheathed lighting cable used that year was an imported product. It was not until forty-two years later (1939) that the first domestic cable was produced in Kunming (cable factory). Before 1949, there were only more than 2,000 employees in the wire and cable industry, about 500 production equipment, and the highest annual copper consumption was only 6,500 tons. Among them, the four wire factories in Kunming, Shanghai, Tianjin, and Shenyang share 5,700 tons of copper, accounting for 87.7% of the national output. The wire and cable industry is developing slowly. It was not unti...

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Problems solved by technology

[0004] Traditional cables and optical fibers are mostly separated, and photoelectric composite cables have fewer structures. Photoelectric composites require softness, tensile strength, oil resistance, high temperature resistance, low temperature resistance, friction resistance, etc., and have high environmental performance requirements for cables. Previous oil platforms used The shielding layer of ordinary cables is mostly made of metal wire, and the cable shielding layer is prone to problems such as bulging of the outer sheath or piercing of the core.

[0005] For specific high-temperature environments, the fire protection of cables and optical cables is particularly important. However, most cables and optical cables now use mica for fire protection, which has poor fire performance and cannot meet certain production needs.

[0006] For a specific humid environment, moisture-proof and anti-corrosion are particularly important for cables and optical fibers. However, after the outer sheath of traditional cables and optical cables is damaged, there is a problem of oxidation and corrosion to the inner shielding layer.

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