A kind of indoor and outdoor universal self-supporting leather cable

A kind of leather cable, self-supporting technology, applied in the field of indoor and outdoor general self-supporting leather cable, can solve the problems of short service life, high maintenance cost, increased loss, etc., to improve the pressure resistance performance and ensure the tensile strength Effect that performance, bending performance satisfies

Active Publication Date: 2022-06-21
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are obvious defects in cold junction technology: large loss, short service life, high maintenance cost; hot melt technology is complicated to operate, low in efficiency, and requires large equipment investment
[0004] In addition, although the current outdoor leather cable has good tensile performance, it can withstand strong tensile force without breaking the fiber.
In the actual installation process, fixing methods such as winding and kink fixing on cement poles are usually used to save costs or improve efficiency. However, outdoor sheath optical cables are likely to be bent or subjected to high pressure due to this fixing method, resulting in increased loss or even fiber break

Method used

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  • A kind of indoor and outdoor universal self-supporting leather cable
  • A kind of indoor and outdoor universal self-supporting leather cable
  • A kind of indoor and outdoor universal self-supporting leather cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] like figure 1 As shown, the self-supporting optical fiber cable provided in this embodiment includes a strength member, a communication optical unit and an outer sheath;

[0050] The reinforcing piece is phosphated thick steel wire with a diameter of 1mm; the reinforcing piece is placed straight;

[0051] The communication optical unit is a single-core tight-buffered optical fiber; the reinforcing member is arranged in a straight line with the communication optical unit;

[0052] The outer sheath is in the shape of a figure of 8; one side of the reinforcement is close to the outer side of the phosphating thick steel wire, with a thickness of 0.5mm, and the arc curvature radius of one side of the reinforcement is 1.0mm; the side of the communication optical unit has a thickness of 0.25 mm. mm, to form a cavity with a diameter of 1 mm, to accommodate the communication optical unit, that is, to cover the outside of the communication optical unit, and the radius of curvatu...

Embodiment 2

[0056] like figure 2 As shown, the self-supporting optical fiber cable provided in this embodiment includes a strength member, a communication optical unit and an outer sheath;

[0057] The reinforcing piece is phosphated thick steel wire with a diameter of 1mm; the reinforcing piece is placed straight;

[0058] The communication optical unit is a single-core tight-buffered optical fiber; the reinforcing member is arranged in a straight line with the communication optical unit;

[0059] The outer sheath has a water drop-shaped cross section, the circle where the circular arc on one side of the reinforcement is located is tangent to the circle where the circular arc on one side of the communication optical unit is located, and its cross-sectional shape consists of the circumferences on both sides and the circle on which it is located. The outer male tangent line segment is composed of the outer male tangent line segment, the radius of curvature of the arc on one side of the r...

Embodiment 3

[0063] like image 3 As shown, the self-supporting optical fiber cable provided in this embodiment includes a strength member, a communication optical unit and an outer sheath;

[0064] The reinforcing piece is phosphated thick steel wire with a diameter of 1mm; the reinforcing piece is placed straight;

[0065] The communication optical unit is a single-core tight-buffered optical fiber; the reinforcing member is arranged in a straight line with the communication optical unit;

[0066] The outer sheath has a gourd-shaped cross-section, the circle where the circular arc on one side of the reinforcement is located and the ellipse circumference where the elliptical arc on the side of the communication optical unit is located constitutes the outer circumference of the cross-section, and the radius of curvature of the circular arc on the side of the reinforcement is: 1.0mm, the radius of curvature on the side of the communication optical unit is 0.75mm, the ellipse where the elli...

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Abstract

The invention discloses a self-supporting leather optical cable, which includes a strengthening member, a communication optical unit and an outer sheath; the strengthening member is formed by a straight metal strengthening member, and the strengthening member is used as a suspension wire Arranged in a straight line with the communication optical unit; the outer sheath is closely attached to the outer side of the reinforcement member and covers the outer side of the communication optical unit. The self-supporting fiber optic cable provided by the invention simplifies the structure of the existing fiber optic cable, cancels the design of the sheath and the reinforcement on the two wings of the butterfly, and uses the reinforcement as a suspension wire at the same time to meet the self-supporting requirements of the outdoor fiber optic cable. The butterfly sheath is canceled, and the communication optical unit is placed close to the strength member, and arranged in a straight line, so as to ensure the tensile performance, and make the side of the strength member share the lateral pressure, so as to improve the anti-optical cable pressure resistance performance . On the other hand, due to the reduced cable diameter, its bending performance meets the needs of indoor wiring.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and more particularly relates to an indoor and outdoor universal self-supporting type leather wire optical cable. Background technique [0002] Leather cable, also known as butterfly cable, is usually divided into indoor leather cable and outdoor leather cable. The price of the two is quite different. The price of the outdoor type is about twice the price of the indoor type. The price factor should be considered when making a specific design plan. Generally, the outdoor self-supporting leather with higher cost and better tensile performance is used. Line optical cable, ordinary butterfly optical cable for indoor use, the two are transitioned through a fiber distribution box or a splice box. [0003] The large-scale use of leather cable in the FTTX project mainly adopts two connection methods: one is the cold splicing technology (physical splicing) of the optical cable based o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/44
Inventor 孙志雄杨智凌赵彤
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
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