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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, and cannot effectively expand the types and applications of all-dielectric 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

Embodiment 1

[0053] refer to figure 1 In this embodiment, grooves are arranged alternately on the outer side of the sheath, and the water lubricating layer is arranged in the grooves, and the layer-stranded optical core in the sheath adopts ordinary colored optical fiber.

[0054] The structure of the all-dielectric optical cable of this embodiment is as follows: image 3 As shown, the number of cores of the optical cable is 30, the number of strands is 5, the number of optical fiber cores in each sleeve is 6 cores, the water lubricating layer I is water-soluble resin, and the sheath II is MDPE , the water-blocking tape III is a sodium polyacrylate coated tape, the sleeve IV is a PBT loose tube, the water-blocking filler V is ointment, the optical fiber VI is a colored optical fiber, and the central strength member VII is GRP.

[0055] Wherein, the water lubricating layer such as figure 1 As shown, it is continuous in the longitudinal direction of the sheath and alternately and symmetri...

Embodiment 2

[0060] refer to figure 1 In this embodiment, grooves are arranged alternately on the outer side of the sheath, and the water lubricating layer is arranged in the grooves, and the layer-stranded optical core in the sheath adopts ordinary colored optical fiber.

[0061] The structure of this embodiment is as Figure 4 As shown, the number of cores of the optical cable is 72, the number of strands is 6, the number of optical fiber cores in each sleeve is 12 cores, the water lubricating layer I is water-soluble resin, and the sheath II is HDPE , the water-blocking tape III is a sodium polyacrylate coated tape, the sleeve IV is a PBT loose tube, the water-blocking filler V is a water-blocking yarn, the optical fiber VI is a colored optical fiber, and the central reinforcement Item VII is GRP.

[0062] Wherein, the water lubricating layer such as figure 2 As shown, it is arranged vertically and continuously alternately symmetrically with the sheath, the number of the water lubri...

Embodiment 3

[0067] refer to figure 1 In this embodiment, grooves are arranged alternately on the outer side of the sheath, and the water lubricating layer is arranged in the grooves, and the layer-stranded optical core in the sheath adopts an optical fiber ribbon.

[0068]The structure of this embodiment is as figure 2 As shown, the number of cores of the optical cable is 120, the number of strands is 5, the number of optical fiber ribbons in each loose tube is 2, the number of optical fibers in the optical fiber ribbon is 12f, and the water lubricating layer I is a water-soluble resin. The sheath II is MDPE, the water blocking tape III is a sodium polyacrylate coated tape, the sleeve IV is a PBT loose tube, the V is an optical fiber ribbon, and the water blocking filler VI is ointment , the central reinforcement VII is GRP.

[0069] Wherein, the water lubricating layer such as figure 2 As shown, it is arranged vertically and continuously alternately symmetrically with the sheath, th...

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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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