RU2691625C1 - Self-isolating design of a river optical communication cable - Google Patents

Abstract

FIELD: electrical engineering.SUBSTANCE: invention relates to the field of electrical engineering and can be used in the construction of optical communication cables in the construction of fiber-optic communication lines along the river bed and crossings over rivers and lakes. Disclosed is an optical communication cable comprising optical fibers, each pair of which is placed in a reinforced optical module with two reinforcing elements. All reinforced modules are located around central power element in ecological hydrophobic aggregate, water-blocking tape and in polymer tube, metal shell around which insulated metal wires are laid. Outer polymer shell of high-pressure polyethylene is perforated along the entire length of the cable.EFFECT: as a result of using the proposed structure, in case of an emergency, on one of the regeneration sections, temporary power may be provided through a wire-wire system along the shore cable with a common self-contained power supply system of regenerators of the FO regenerators in the cable.1 cl, 1 dwg

Description

Technical field

The invention relates to the field of electrical engineering and can be used in the construction of optical communication cables when laying fiber-optic communication lines along the riverbed and crossing over rivers and lakes.

The level of technology

The design of an optical communication cable for river crossings with double circular-wire armor is well known (D. Charle “Hat-trick in a match with the Atlantic”), Series of publications: “History of telecommunications and radio engineering”, vol. 2, M. 2002; Figure 21.10 p. 208). The cable contains a central power element. Optical fibers in a loose tube, belt insulation, inner polyethylene sheath, corrugated steel tape, intermediate polyethylene sheath, jute pillow, round steel wire armor and outer polyethylene hose or bitumen protective cover.

The disadvantage of the design is the presence of an environmentally hazardous hydrophobic aggregate and the complexity of laying such a structure along the riverbed and the instillation of such a cable into the river soil.

The design of the deep-sea optical cable is known (D. Charle “Hat-trick in a match with the Atlantic”, Series of publications: “The history of telecommunications and radio engineering”, issue 2, M. 2002; fig. 21.11, p. 208). It is based on a profile module, in the grooves of which the optical fibers are laid. The grooves are filled with a hydrophobic gel. In the center of the module there passes a steel wire, surrounded by a module with a thin plastic sheath, two layers of round wires, a copper tube, a polyethylene sheath, a second copper tube, and an outer polyethylene sheath.

The disadvantage of this design is also the presence of an environmentally hazardous hydrophobic aggregate, the difficulty of accessing optical fibers without access to water, the organization of remote power via the wire-to-water system, which is harmful to the environment, the cable undergoes self-corrosion, the difficulty of digging this structure into the river soil .

Known design underwater optical cable (OK); POK-400 brands manufactured by CJSC Sevkabel Optik with copper conductors for remote powering for laying in the seas and oceans. It contains a central polymer tube with loosely laid optical fibers (OM) filled with a hydrophobic compound copper round wire over a polymer tube (conductive wire of a remote power supply) water-blocking tape, copper tape, intermediate polymer sheath of high-density polyethylene, round-wired armor over a galvanized shell steel wire in a hydrophobic filler, the outer polymer shell of high density polyethylene (EL Portnov Optical cables st Their installation and measurement, p. 189, rice 5.29, M. Hotline-Telecom 2012. 448 p.).

The disadvantage of this design is the constructive solution of the organization of power supply of intermediate amplifiers only by the “wire-water” system, which damages the ecology of the aquatic environment, the difficulty of accessing the RW in case of damage to OK and its operation, the difficulty of silting the cable in the sea ground.

Designs of underwater optical cables for various laying depths are known, the design of which is designed in such a way that the organization of remote power supply is carried out only via the wire-to-water system (S.L. Denisov, I.E. Samartsev. General consideration of fiber-optic undersea lines, p. 170-175, Scientific and Technical Journal T-Comm-Telecommunications and Transport, Special Issue 3 of the Branch Scientific Conference Information Society Technologies 2009, Issue 1, Part 2 June 2009, Media Publisher Publishing House, M. 2009.

The closest in technical essence is the design of an underwater OK (article considered above by S. L. Denisov, I. Samartseva. General consideration of underwater fiber-optic communication lines) containing optical fibers in a steel tube, on top of which copper conductor wires for remote power are superimposed, copper foil and an intermediate polymer shell made of high-density polyethylene, round-wired armor made of galvanized steel wires and an outer polymer shell.

The disadvantage of this design is the design of the remote power supply circuit, created for organizing the power supply via the wire-to-water system and the presence of a non-ecological hydrophobic aggregate, which is detrimental to the ecology of the aquatic environment, the complexity of repairing the optical cable and optical amplifiers built into the design of the optical cable, the complexity of the silting of the cable in sea soil.

Summary of Invention

The task, which this technical solution is aimed at, is to create such a construction of an optical communication cable, which will allow not only to easily organize the power supply system autonomously, but also through the “wire-to-wire” system, without harming the ecology of the aquatic environment, open the optical core and get one of the optical fibers, but also to reduce the recovery time of damage to OK and protect against moisture penetration into all RW during repair of OK and also solve the problem of cable silting in the river ground.

To solve this problem in an optical communication cable containing optical fibers, each pair of which is placed in a reinforced optical module with two reinforcing elements. All reinforced modules are located around the central power element in an ecological hydrophobic filler, moisture blocking tape and in a polymer tube, a metal shell around which insulated metal wires are laid. Outer polymeric sheath made of high-density polyethylene, perforated along the entire length of the cable.

List of figures

FIG. 1 shows the design of the river optical; cable, which contains optical fibers 1 and reinforcing elements 2 of the reinforced optical module 3, the central power element 4, around which the reinforced optical modules 3 are laid, ecological filler 5, moisture blocking tape 6, metal sheath 7, polymer sheath 8, armor made of insulated metal elements 9. The outer polymer shell of high-pressure polyethylene 10 is perforated along the entire length of the cable 11.

The implementation of the invention

In this construction, in an optical communication cable containing optical fibers 1, each pair of which is placed in an amplified optical module 3 with two reinforcing elements 2, this provides both mechanical protection and protection against water penetration to the fibers, and all reinforced modules 3 are located around central power element 4, which provides primary mechanical protection for the core of the optical cable. Environmental hydrophobic aggregate 5, and a moisture-blocking tape-6 enhance the effect of protecting the core of the optical cable from water penetration, the metal sheath 7 provides both mechanical protection and protection against water penetration to the reinforced optical modules 3 and therefore to optical fibers 1. Polymer sheath 8, which protects the metal sheath from corrosion and around which insulated metal wires 9 are laid for enhanced mechanical protection and for remote power supply organizations, isolates run the core of the cable from the outer polymer shell 10 of high-pressure polyethylene, perforated 11 along the entire length of the cable; which increases the level of environmental protection of the aquatic environment and leads to the self-hardening of the cable into the river soil during installation.

As a result, in an emergency at one of the regeneration sites, it is possible to arrange temporary power supply via the wire-to-wire system along insulated conductors 9 of the river cable with a common autonomous power supply system for the regenerators of the OF. When the cable is completely broken, the minimum amount of water will penetrate to the modules 3 due to the presence of hydrophobic filler 5 and water blocking tape 6. When the optical core is opened and one of the optical fibers 1 is removed from the optical module 3, the damage recovery time is OK and protection from moisture penetration decreases in all optical modules 3 and, therefore, in OB when repairing OK.

Claims (1)

A self-lagging design of a river optical communication cable containing optical fibers in a tube, an intermediate polymeric sheath made of high-pressure polyethylene, armor made of round-shaped elements and an outer polymer sheath made of high-pressure polyethylene, characterized in that each pair of optical fibers is placed in a reinforced optical module with two reinforcing elements, all reinforced optical modules are twisted around a central power element, while around a sheet of reinforced optical modules is inserted an ecological hydrophobic aggregate and a water-blocking tape, a metal sheath and a reinforced polymer sheath, over which a curled of insulated round wires is laid, over which an outer polymer sheath of high-pressure polyethylene is inserted, perforated along the entire length of the cable.

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