A pressure-resistant flame-retardant optical cable

Abstract

The invention discloses an anti-compression flame-retardant optical cable. The optical cable comprises an inner core, elastic layers, a shielding layer, a fireproof layer and an outer sheath. The elastic layers wrap a periphery of the inner core. The shielding layer wraps peripheries of the elastic layers. The fireproof layer wraps a periphery of the shielding layer. The outer sheath wraps a periphery of the fireproof layer. The inner core comprises a microbeam tube located in a center of the optical fiber and several optical fibers in the microbeam tube. A reinforcing layer wraps a periphery of the microbeam tube. There are at least two elastic layers. Each elastic layer comprises several elastic pipes which are uniformly distributed. The elastic pipes are arranged along a length direction of the optical cable. The two adjacent elastic layers are characterized in that each elastic pipe of one elastic layer corresponds to a gap between the two adjacent elastic pipes of another elastic layer. In the invention, an anti-compression capability of the optical cable is good, a service life is long and a flame-retardant effect is good.

Description

technical field [0001] The invention belongs to the technical field of optical fiber and cable, in particular to a pressure-resistant and flame-retardant optical cable. Background technique [0002] With the continuous development of optical networks, users have higher and higher requirements for the use and environment of optical cable products, and the development demand for fiber-to-the-home is becoming stronger and stronger. The size requirements of users for optical cables are getting higher and higher. Customers require optical cables to resist pressure to save wiring space. There are more and more places where optical cables are used. They are easy to be crushed and damaged during installation, and they will also be hit by heavy objects and impacted by falling objects. etc., causing damage to the optical cable, affecting its transmission performance, and even causing interruption of signal transmission. Moreover, a large amount of acid gas smoke is produced during co...

AI Technical Summary

Problems solved by technology

The size requirements of users for optical cables are getting higher and higher. Customers require optical cables to resist pressure to save wiring space. There are more and more places where optical cables are used. They are easy to be crushed and damaged during installation, and they will also be hit by heavy objects and impacted by falling objects. etc., which will damage the optical cable, affect its transmission performance, and even cause signal transmission to be interrupted

Moreover, a large amount of acid gas smoke is produced during combustion, which directly damages human health.

The general fire-resistant optical cable adopts a layer-twisted structure, and fiber paste and metal strips are used as water-blocking and fire-resistant components. Although some shortcomings of ordinary optical cables have been overcome, new problems such as damage to human health and environmental pollution due to the use of fiber paste have also appeared.

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