RU2673241C1 - 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. Each pair of optical fibers (1) is placed in reinforced optical module (3) with two reinforcing elements (2), all modules are twisted around central power element (4), while moisture blocking tape (5) and a central force element are introduced around the coil from the reinforced optical modules, coil from the reinforced optical modules and the moisture blocking tape are placed in a reinforced polymer tube, over which is routed the coil of the round wires, on its top a moisture blocking ribbon and polymer shell (6) made of high pressure polyethylene, over which a metal corrugated shell is put perforated along the entire length of the cable.EFFECT: invention provides the possibility, in case of an emergency situation on one of the regeneration sites, to organize a temporary power supply via a wire-to-wire system along the shore cable with a common autonomous power system.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 river crossings and lakes.

State of the art

The construction of an optical communication cable for river crossings with double round-wire armor is known (Fig. 21.10, p. 208 in the book by D. Charlé Hat-trick in a match with the Atlantic, Series of publications: History of Telecommunications and Radio Engineering, vol. 2, M. 2002).

The cable contains a central power element. Optical fibers in a free tube, belt insulation, inner polyethylene sheath, corrugated steel tape, intermediate polyethylene sheath, jute pillow, armor made of round steel wires and an outer polyethylene hose or bitumen protective cover.

The disadvantage of the design is the presence of environmentally hazardous hydrophobic aggregate and the difficulty of laying such a structure along the riverbed and burying such a cable in the river soil.

The design of a deep-sea optical cable is known (Fig. 21.11, p. 208 in the same book). Its basis is a profile module, in the grooves of which optical fibers are laid. The grooves are filled with a hydrophobic gel. A steel wire passes in the center of the module, the module is surrounded by a thin plastic sheath, two coils of round wires, a copper tube, a polyethylene sheath, a second copper tube, and an outer polyethylene sheath.

The disadvantage of this design is the presence of environmentally hazardous hydrophobic aggregate, the difficulty of burying this structure in river soil.

The known design of an underwater optical cable (OK) of the POK-400 brand manufactured by ZAO Sevcable Optic with copper conductors for remote power for laying in the seas and oceans. It contains a central polymer tube with freely laid optical fibers (OB), filled with a hydrophobic compound, a round copper wire on top of the polymer tube (conductive core of remote power supply), a water blocking tape, a copper tape, an intermediate polymer shell made of high density polyethylene, round-wire armor on top of the shell made of galvanized steel wire in a hydrophobic filler, the outer polymer sheath of high density polyethylene (E.L. Portnov Optical cables with see their installation and measurement, p. 189, fig. 5.29, M. Hotline-Telecom 2012. 448 p.)

The disadvantage of this design is, by design, the organization of the power supply of intermediate amplifiers only through the "wire-water" system, which harms the ecology of the aquatic environment, the difficulty of access to the exhaust agent when the OK is damaged and its operation, the difficulty of silting the cable into the sea soil.

There are known designs of underwater optical cables for different laying depths, the design of which is designed in such a way that remote power supply is organized only by the “wire-water” system (S.L. Denisov, I.E. Samartsev General Consideration of Underwater Optical Fiber Communication Lines, p. 170-175, Scientific and technical journal T-Comm-Telecommunications and Transport, Special issue 3 of the industry scientific conference Information Technology Technologies 2009, Issue 1, part 2 June 2009, Media Publishing House, M. 2009).

The closest in technical essence is the design of an underwater OK (the article by SL Denisov and IE Samartsev “General Consideration of Underwater Fiber Optic Communication Lines” discussed above) containing optical fibers in a steel tube, on top of which copper conductive conductors for remote power are applied, copper foil and an intermediate polymer sheath made of high pressure polyethylene, round-wire armor made of galvanized steel wires and an external polymer sheath.

The disadvantage of this design is the design of the remote power circuit, designed to organize power supply through the wire-water system and the presence of a hydrophobic aggregate, which is harmful to the ecology of the aquatic environment, the difficulty of repairing the optical cable and optical amplifiers built into the design of the optical cable, the complexity of silting the cable into sea soil.

SUMMARY OF THE INVENTION

The task to which this technical solution is aimed is to create such an optical communication cable design that will allow not only easily organizing the power system autonomously, but also using a 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 time it takes to repair damage to the OK and protect all OM from moisture penetration during OK repair, as well as solve the problem of siltation of the cable in river soil.

To solve the problem, in an optical communication cable containing optical fibers, each pair of which is placed in a reinforced optical module with two reinforcing elements, and all reinforced modules are located around the central power element in a moisture blocking tape and in a polymer tube around which metal wires are laid, moisture blocking tape, the outer polymer sheath made of high pressure polyethylene, and the outer metal corrugated sheath, perforated along the entire length of the cable.

List of figures

In FIG. 1 shows the design of a river optical cable. It contains optical fibers 1 and reinforcing elements 2 of a reinforced optical module 3, a central power element 4, around which reinforced optical modules 3, a moisture blocking tape 5, are laid. polymer shell 6, armor made of metal elements 7, moisture blocking tape 8, external polymer shell 9, corrugated metal shell 10, corrugations on the metal shell 11, perforated holes 12.

The implementation of the invention

In this design, 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, and all reinforced modules 3 are located around the central power element 4 in the moisture blocking tape 5 and in the polymer tube 6, around which laid metal wires 7, moisture blocking tape 8, the outer polymer sheath 9 made of high pressure polyethylene, and the outer metal corrugated sheath 10, perforated 12 along the entire length of the cable due to The absence of copper cores due to the introduction of an additional polymer shell 9 and moisture blocking tapes 5 and 8 increases the level of environmental protection of the aquatic environment, and the presence of an external corrugated metal shell 10 perforated along the entire length of the cable leads to self-burying of the cable in river soil when laying.

As a result, in case of emergency in one of the regeneration sections, it is possible to organize temporary power supply through the wire-to-wire system along the shore cable with a common autonomous power supply system for the regenerators ОВ in the cable.

Claims (2)

River optical communication cable containing optical fibers in the tube, an intermediate polymer sheath made of high pressure polyethylene, armor made of round elements and an outer polymer sheath made of high pressure polyethylene, characterized in that in order to improve the characteristics of digging the cable into river soil without violating the ecology of the reservoir, 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 fiber from reinforced optical modules a moisture blocking tape and a central power element are introduced, twisting from the reinforced optical modules and a moisture blocking tape are placed in a reinforced polymer tube over which minutes laid coils of round wire, over which is introduced vlagoblokiruyuschaya tape and polymer shell of high density polyethylene, which is superimposed over the metallic sheath corrugated, perforated over the entire length of the cable.

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