All-dielectric optical cable and laying method thereof

An all-dielectric and optical cable technology, which is applied in the field of optical cables, can solve the problems of not being able to effectively expand the types and applications of all-dielectric optical cables, and that the selection and structure of optical cables are relatively limited, so as to improve construction efficiency, save installation resources, and reduce contact probability. Effect

Active Publication Date: 2022-01-11
YANGTZE OPTICAL FIBRE AND CABLE JOINT STOCK LIMITED COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has great restrictions on the selection and structure of optical cables

Method used

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  • All-dielectric optical cable and laying method thereof
  • All-dielectric optical cable and laying method thereof
  • All-dielectric optical cable and laying method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0052] Example 1

[0053] Refer figure 1 The outer side of the sheath of the present embodiment is alternately provided with a groove, and the water lubricating layer is arranged in the trench, and the layer stranded core in the sheath is used in conventional colored fibers.

[0054] The structure of the full-scale optical cable of the present embodiment is as image 3 As shown, the number of optical cable cores is 30 cores, and the number of strands is 5, and the number of optical fibers in each sleeve is 6 cores, and the water lubricating layer I is a water-soluble resin, and the sheath II is MDPE. The water absorbing belt III is a sodium polyacrylate coating belt, the sleeve IV being a PBT loose jaundice, the waterproof filler V is an ointment, the optical fiber VI is a coloring fiber, the center reinforcement member VII is GRP.

[0055] Among them, the water lubrication layer is like figure 1 As shown, it is arranged alternately symmetrically in the sheath circumference in the ...

Example Embodiment

[0059] Example 2

[0060] Refer figure 1 The outer side of the sheath of the present embodiment is alternately provided with a groove, and the water lubricating layer is arranged in the trench, and the layer stranded core in the sheath is used in conventional colored fibers.

[0061] The structure of this embodiment is like Figure 4 As shown, the number of optical cable cores is 72 cores, and the number of strands is 6, and the number of optical fibers in each sleeve is 12 cores, and the water lubricating layer I is a water-soluble resin, and the sheath II is HDPE. The water absorbed tape III is a polyacrylate coating belt, the sleeve IV being a PBT loose tube, and the waterproof filler V is a water-water yarn, and the fiber VI is a colored fiber, the center strengthened Part VII is GRP.

[0062] Among them, the water lubrication layer is like figure 2 As shown, it is continuously symmetrically symmetrically configured with the longitudinal direction of the sheath, the number of w...

Example Embodiment

[0066] Example 3

[0067] Refer figure 1 The outer side of the sheath of the present embodiment is alternately disposed with a groove, and the water lubricating layer is arranged in the trench, and the layer stranded core in the sheath is used in a fiber strip.

[0068]The structure of this embodiment is figure 2 , The number of the core cable core is 120, the number of twisted elements is 5, the number of each band of the optical fiber loose tube 2, the optical fiber ribbon optical fiber 12f, the lubricant layer is a water-soluble resin Ⅰ, the sheath is ⅱ MDPE, the water blocking tape is coated with sodium polyacrylate ⅲ, the sleeve is ⅳ PBT loose tube, the optical fiber ribbon is ⅴ, the water blocking filler grease is ⅵ the central reinforcing member is ⅶ GRP.

[0069] Wherein, as the lubricant layer figure 2 As shown in which the continuous sheath longitudinally alternating symmetrically disposed, the number of layers of water-lubricated 8, between the strip center angle 45 °; ...

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Abstract

The invention discloses an all-dielectric optical cable. The all-dielectric optical cable comprises a sheath, a water lubricating layer made of resin is arranged on the outer surface of the sheath, and the resin adopted by the water lubricating layer is different from that adopted by the sheath; the water lubricating layer has water solubility so as to form an aqueous solution around the all-dielectric optical cable after being dissolved in water when the all-dielectric optical cable is laid in water, and the aqueous solution has preset kinematic viscosity and preset density, so that the all-dielectric optical cable is suspended in the aqueous solution and the propulsive force borne by the all-dielectric optical cable is improved. The water-soluble resin is adopted in the water lubricating layer arranged on the outer side of the sheath of the all-dielectric optical cable, in the water laying process, the water lubricating layer is directionally released between the sheath and the inner wall of the pipeline, after the water lubricating layer is completely dissolved, and the water lubricating layer is dissolved and reacts with high-speed water flow in the pipeline to form a water solution. The friction force between the all-dielectric optical cable and the inner wall of the pipeline is reduced, and the propulsion power brought by the laying medium is improved.

Description

technical field [0001] The invention belongs to the field of optical cables, and more specifically relates to an all-dielectric optical cable and a laying method thereof. Background technique [0002] With the development of optical communication engineering in recent years, in the process of laying and installing optical cables, in order to save installation resources and improve the efficiency of laying optical cables, more and more communication networks and trunk lines adopt mechanized laying methods. Commonly used optical cable laying methods There are: mechanical traction, pipeline air blowing. [0003] Among them, for optical cables laid by mechanical traction, due to the friction between the sheath and the ground or the inner wall of the pipe, the sheath skin is easily scratched, and even the sheath peels off. The frictional resistance is too large, resulting in a short installation distance of the optical cable. In the way of pipe air blowing, the high-speed airfl...

Claims

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Application Information

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IPC IPC(8): G02B6/44C08L29/04C08L71/02C08L1/12C08L33/02
CPCG02B6/443G02B6/4438G02B6/4486C08L29/04C08L2203/202C08L71/02C08L1/12C08L33/02
Inventor 罗俊超杨向荣祁林刘宏超
Owner YANGTZE OPTICAL FIBRE AND CABLE JOINT STOCK LIMITED COMPANY
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