RU2745441C1 - Cable with microchannel function - Google Patents

Abstract

FIELD: cable engineering.

SUBSTANCE: cable with a micro-channel function contains an external protective covering and conductive metal conductors laid inside it, each of which is covered with an insulating sheath, at least one hollow micro-tube made of high-strength material. There is filler introduced into the gaps between the conductive conductors and the micro-tube, and the micro-tube is laid in a twist with conductive conductors.

EFFECT: simplified design, ensured cable integrity, increased maintainability and scalability of the structure.

1 cl, 1 dwg

Description

The invention relates to cable technology and can be used both to create a telecommunications environment for an industrial and technically complex object (settlements, factories, factories, compressor stations, hydraulic structures, airfields, etc.), and to create an elementary information exchange section of the "point -dot".

At present, the transmission of information in the telecommunications infrastructure is carried out either through a radio channel or through guiding structures - cable lines.

Many methods are known for laying cable communication lines. Cables are laid on independent routes (in the ground, along the facades of buildings and structures, by suspension on supports or between buildings and structures), or together with other communications in the same direction (along ramps, channels, in cable ducts, in trays, tunnels or through cable gallery). At the same time, in accordance with the current regulatory documents, the minimum permissible distances between communication cables and related communications are observed.

For the case of organizing information exchange along guiding structures, for example, in the form of optical fibers, a method is known for laying optical fibers along microchannels (micropipe sewerage). Laying of optical fibers is carried out by blowing into pre-laid microchannel tubes. The pipes themselves are laid in the same way for communication cables.

The known method of laying optical fibers using combined cables used for the simultaneous transmission of data over optical fibers and electrical energy or electrical information signals through electrical wires.

Known designs of electro-optical cables (RU 136913, RU 157780, RU 2451154, RU 80027, RU 188809, RU 193930), providing the simultaneous transmission of optical and electrical energy. The common elements of the analog devices are conductors, modules with optical fibers and insulating materials.

The closest analogue in design, taken as a prototype, is a power cable (RU 74004, publ. 06/10/2008) containing conductive metal conductors laid in parallel in one plane or twisted together, covered with insulation and enclosed in tape armor, and containing in the spaces between the conductors one or more optical modules with fiber optic light guides.

Common disadvantages of known designs are:

- the inability to change the number of optical fibers during the operation phase, the built communication lines using these structures are not scalable;

- low maintainability due to the need to install a special combined coupling (for optical and electrical elements at the same time);

- the inconvenience of withdrawing optical fibers from the cable structure at the end, and even more so at the intermediate point.

The objective of the invention is to create a cable with additional functionality that allows you to increase the arsenal of tools for the construction of cable communication lines, increase the flexibility and scalability of cable communication lines, reduce the cost of construction and installation work in the implementation of the cable infrastructure of the telecommunications environment, reduce the cost of maintaining and monitoring security zones of communications.

The technical problem is solved by using a microchannel cable designed to transmit electrical signals and / or high-power electricity and at the same time providing the possibility of laying structures for directing an electromagnetic wave (in particular, an optical fiber or an optical microcable).

A cable with a microchannel function contains an outer protective sheath and conductive metal conductors laid inside, each of which is covered with an insulating sheath, at least one hollow microtube made of high-strength material, while a filler is introduced into the gaps between the conductive conductors and the micropipe, and the micropipe is laid in a twist with conductive conductors.

The stacked bundle is held torsionally rigid by means of a protective sheath; it is also possible to use a fastening winding made of material strips.

Conductive conductors covered with an insulating sheath and micropipes are twisted into a layer with an optimal pitch, which ensures the integrity of the cable with the microchannel function, and does not lead to strong bends of the micropipe, leading to an increased resistance to blowing the guide structures into it.

The proposed cable contains at least one microtube made of metal or polymer designed for blowing or pulling structures that guide the electromagnetic wave.

Due to the presence of a hollow microtube in the cable structure for laying, including optical microcables, the following is achieved:

- changing the number of optical fibers during the operation phase by replacing the microcable with a microcable with the required optical fiber capacity;

- reduction of the time for emergency recovery work on a cable with microchannel in comparison with electro-optical cables due to the well-known and proven methods of restoration of cables with current-carrying conductors and the well-known technology of restoration of micropipes of microcable sewage;

- reducing the width of the security zone of communications by combining the functions of transmission of electricity and information in one cable;

- reduction of financial and time costs for construction and installation work (CMP) by reducing the amount of cable products being laid;

- reduction of cable support systems;

- the ability to control the integrity and safety, as well as technical monitoring of the combined cable through the laid optical fibers.

A microtube in a cable can be used to transfer liquid or gaseous media, including the possibility of supplying a pulsed medium, gas and liquid for fire extinguishing. So, for example, with the help of cable lines built on the basis of the cable of the proposed design, it is possible to create a system for taking control air samples in buildings and structures into which the cable enters.

Fig. Shows a cross-section of a cable with microchannel function, where

1 - outer shell,

2 - placeholder,

3 - insulating covering of a conductive core,

4 - conductive core,

5- microtube.

Example.

The cable with the microchannel function (Fig.) Contains a protective outer sheath (1), made, for example, of a high-strength polymer, copper or aluminum conductive conductors (4), covered with an insulating sheath (3), made, for example, of PVC compound, minimum one microtube (5) made of metal or high density polymer and filler (2), for example, of a polyvinyl acetate (polyolefin) composition. Conductive conductors (4), covered with an insulating sheath (3), and microtubes are twisted into a layer with an optimal pitch, which ensures the integrity of the cable with the microchannel function, and does not lead to strong bends of the microtube, leading to an increased resistance to blowing guiding structures into it.

The proposed cable functions as follows:

- the micropipe is intended for laying in it during operation the guiding structures required in a particular situation;

- conductive conductors allow the transmission of electrical energy, including telecommunication signals.

The cable is used as follows:

To connect objects to engineering networks, incl. to the networks of electrification and telecommunications, a cable of the proposed design is used.

A cable with a microchannel function, the design and materials of which correspond to the conditions of laying and construction, is laid between buildings and structures - between the switchboards and the premises of transformer substations. In the absence of requirements for the output of optical fibers at transit points, it is allowed to organize the continuity of micropipes in transit buildings and structures.

Microcables with the required number of optical fibers are laid along the micropipes from the composition of the laid cables by blowing or pulling

Claims (1)

A cable with a microchannel function contains an outer protective sheath and conductive metal conductors laid inside, each of which is covered with an insulating sheath, at least one hollow microtube made of high-strength material, characterized in that a filler is introduced into the gaps between the conductive conductors and the micropipe, and the micropipe is laid in twisting with conductive conductors.

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