RU138270U1 - CABLE FOR COMMUNICATION, ALARM AND LOCKING SYSTEMS - Google Patents

Abstract

1. A cable for communication systems, automation and telemechanics, containing conductive copper conductors, insulated with solid, film-porous or film-porous film polymer material, twisted around star corridor in quadruples, wrapped in an open spiral with synthetic threads or ribbons, twisted, in turn, into the core, sequentially superimposed on the core belt insulation, screen and protective sheath, characterized in that the belt insulation is made of synthetic and / or paper tapes and / or tapes of water blocking Therians and / or in the form of an insulating sheath of a polymeric material, the screen is formed as a helix made of aluminum or copper, or bimetallic provolok.2. The cable according to claim 1, characterized in that under or between the tapes of the belt insulation there is a control core insulated with porous polymeric material. 3. A cable according to claim 1, characterized in that one or more aluminum or copper tapes or aluminum-polymer or copper-polymer tapes are located under or on top of the coiled wire. The cable according to claim 1, characterized in that one or more optical modules with optical fibers are located inside the core. A cable according to claim 1, characterized in that threads and / or tapes of water-blocking material are located inside the free space of the core. The cable according to claim 1, characterized in that on top of the protective sheath contains a sequentially applied pillow made of polymer tapes and / or tapes of crepe paper and / or non-woven fabric, and / or tapes of water blocking material, armor of steel or galvanized steel tapes or wires or in the form of a corrugated shell

Description

The utility model relates to cable technology, namely, to the design of cables for communication systems, automation and telemechanics intended for laying in communication networks, automation and telemechanics in places characterized by increased electromagnetic influence.

Communication cables of the MKSA brand are known, having conductive conductors insulated with polystyrene insulation twisted into star quadruples, which in turn are twisted into a cable core, on top of which a belt insulation, an aluminum sheath and a protective sheath of polymer material are sequentially applied (GOST 15125-92) .

However, such cables do not meet the requirements for the level of protection of the cable from external electromagnetic influences.

The closest known among the assumptions by technical nature is a cable for communication, signaling and blocking systems of the MKPpVBABPShp brand according to TU 16.K71.358-2005. The cable has conductive copper conductors insulated with a polymeric material. Four insulated conductors twisted around a corridor in a star four, wrapped in an open spiral with synthetic thread or ribbon. The star quadruples are twisted into the core of the cable, on top of which a belt insulation is sequentially applied, a screen in the form of an aluminum shell coated with bitumen and a protective sheath of polymer material. (RF patent No. 47132 dated February 28, 2005).

An aluminum shell of sufficient thickness provides the necessary level of cable protection from external electromagnetic influences.

A significant drawback of such a cable is the lack of flexibility and the large bending radius of the cables during installation and installation.

The technical result, which the utility model aims to achieve, is to increase the flexibility of the cable with increased immunity from external electromagnetic influences, which ensures a small bending radius of the cable during installation and installation.

The technical result is achieved by the fact that in a cable for communication, signaling and blocking systems containing conductive copper conductors, insulated with solid, film-porous or film-porous-film polymer material, twisted around star corridors in fours, wrapped in an open spiral with synthetic threads or tapes, twisted in turn into the core, sequentially applied to the core, belt insulation, screen and protective sheath, belt insulation made of synthetic and / or paper tapes and / or tapes from a water-blocking material and / or in the form of an insulating sheath made of a polymeric material, a shield in the form of a winding of aluminum or copper or bimetallic wires.

In one embodiment, the cable may have a control core insulated with a porous polymeric material under or between the belts of insulation.

In another embodiment, the cable may have one or more aluminum or copper or aluminum-polymer or copper-polymer tapes beneath or on top of a wound of wires.

In a further embodiment, the cable may have one or more optical modules with optical fibers.

In a further embodiment, the cable may have threads and / or tapes of water-blocking material inside the free space of the core of the core.

In a further embodiment, the cable over the protective sheath may have a sequentially applied cushion made of polymer tapes and / or crepe paper tapes and / or non-woven fabric and / or tapes made of water blocking material, armor from steel or steel galvanized tapes or wires or in the form of corrugated shell made of steel or steel-polymer tape and a protective hose made of polymer material.

In a further embodiment, the cable may have an insulating and / or protective sheath and / or a protective hose made of low flammability or low fire hazard polyethylene or polyvinyl chloride plastic compound or a halogen-free polymer composition.

The utility model is illustrated in the drawing, which shows a cable in section. The cable for communication systems, automation and telemechanics contains copper conductive conductors 1, each of which is insulated 2. Four insulated conductors are twisted around the corridor 3 into star fours. Star four four, wrapped in an open spiral with synthetic threads or ribbons 5, are twisted into core 6. A belt insulation 7, a control core 8, a screen in the form of an aluminum tape 9, a coil of aluminum wires 10, an aluminum tape 11 and a protective sheath 12 of polymer material are sequentially applied over the core. Over the protective shell 12, a cushion 13, an armor 14 and a protective hose of polymer material 15 are sequentially applied.

Cable manufacturing technology is based on the use of industrial cable equipment and is as follows. Drawing and annealing of copper wire for copper conductive conductors 1 on drawing machines with annealing installation. Copper conductive conductors 1 are insulated with polymer insulation 2 on an extrusion line having an extruder with a screw diameter of (45-60) mm. The insulated conductors are twisted around the cordele 3 into a star four, which is wrapped with threads or ribbons of synthetic material 5 on a SZCh-2M twisting machine. Twisted fours are twisted into a core 6 on twisting machines of a frame lantern type. The belt insulation is applied in the form of an insulating shell on an extrusion line having a screw diameter (90-120) mm. The application of belt insulation 7 in the form of a winding of tapes, a control core 8, a screen of aluminum 9 or aluminum-polymer tape 11 is carried out on winding machines or is combined with the operation of applying an insulating shell 12.

The overlay of the screen in the form of a cove 10 of aluminum or copper or bimetallic wires is made on reservation machines.

The insulating shell 12 and the protective hose 15 made of polymer material are superimposed on an extrusion line having an extruder with a screw diameter of (90-250) mm.

In the armored version of the cable, the armor is superimposed on armored vehicles.

Cable Specifications:

Electrical Insulation Resistance:

- conductive conductors of fours - not less than 12000 MOm.km;

- control wire - not less than 5 MOhm.km.

Working capacity of pairs of fours:

- (23.5 ± 2.5) nF / km for a four-cable and a central four of a seven-cable;

- (24.5 ± 2.5) nF / km for fours of an external winding of seven-cable.

The ideal coefficient of protective action of metal coatings of cables at a frequency of 50 Hz with a longitudinal emf of 70-250 V / km, not more than:

- for unarmoured cables with a screen made of aluminum-polymer tape and half-wire from aluminum wires and with a screen made of copper tape and half-wire from copper wires - 0.7;

- for armored cables with a screen made of aluminum-polymer tape and midi from aluminum wires and with a shield of copper tape and midi from copper wires - 0.4;

- for armored cables with a screen made of aluminum-polymer tape and midi from reinforced aluminum wires and with a shield of copper tape and midi from reinforced copper wires - 0.1.

Cables in an insulating and protective sheath made of low fire hazard PVC compound or a halogen-free polymer composition do not spread combustion when laid in bundles.

Smoke formation during burning and smoldering of cables in a sheath of low fire hazard PVC does not lead to a decrease in light transmission by more than 50% of cables in a sheath of a halogen-free polymer composition by more than 40%.

The permissible bending radius of the cables is at least 12 outer diameters of the cables.

The technical result consists in the construction of a shield made in the form of a coil of aluminum or copper or bimetallic wires, which provides increased protection of the cable from external electromagnetic influences, while the cable has increased flexibility, which ensures a small bending radius of the cable during installation and installation. The control core provides the ability to monitor the integrity of the cable sheath.

Claims (7)

1. A cable for communication systems, automation and telemechanics, containing conductive copper conductors, insulated with solid, film-porous or film-porous film polymer material, twisted around star corridor in quadruples, wrapped in an open spiral with synthetic threads or ribbons, twisted, in turn, into the core, sequentially superimposed on the core belt insulation, screen and protective sheath, characterized in that the belt insulation is made of synthetic and / or paper tapes and / or tapes of water blocking Therians and / or in the form of an insulating sheath of a polymeric material, the screen is formed as a helix made of aluminum or copper, or bimetallic wires. 2. The cable according to claim 1, characterized in that under or between the tapes of the belt insulation there is a control core insulated with a porous polymeric material. 3. The cable according to claim 1, characterized in that one or more aluminum or copper tapes or aluminum-polymer or copper-polymer tapes are located under or on top of the wire coil. 4. The cable according to claim 1, characterized in that one or more optical modules with optical fibers are located inside the core. 5. The cable according to claim 1, characterized in that the threads and / or tapes of the water blocking material are located inside the free space of the core. 6. The cable according to claim 1, characterized in that on top of the protective sheath contains a sequentially applied pillow made of polymer tapes and / or tapes of creped paper and / or non-woven fabric, and / or tapes of water blocking material, armor of steel or steel galvanized tapes or wires or in the form of a corrugated sheath made of steel or steel-polymer tape and a protective hose made of polymer material. 7. The cable according to claim 6, characterized in that the insulating and protective sheath and / or protective hose are made of light-stabilized polyethylene, or of low-flammability or low fire hazard polyvinyl chloride plastic compound or of a halogen-free polymer composition.

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