RU47132U1 - CABLE FOR COMMUNICATION, ALARM AND LOCKING SYSTEMS - Google Patents

Abstract

The utility model relates to cable technology, namely, to the design of cables for communication systems, alarms and interlocks with plastic insulation in plastic and metal sheaths. The cable contains twisted pair or four insulated solid, film-porous or film-porous-film-polymer material copper conductive wires that are twisted into elementary bundles, wrapped with a fastening thread or tape, twisted in turn into the core. A belt insulation, a shield, a tinned copper contact wire, an insulating sheath of polymeric material, armor and a protective sheath of polymeric material are sequentially applied to the core. Elementary beams and between elementary beams contain threads of water-blocking material, each elementary bundle is wrapped with threads or tape of water-blocking material and belt insulation is made of water-blocking material.

Description

The utility model relates to cable technology, namely to the design of cables for communication systems, signaling and blocking with plastic insulation in plastic and metal sheaths intended for laying in communication networks, signaling and blocking.

TPPep brand telephone cables are known having conductive conductors insulated with polyethylene and a sheath made of polymeric material (Telephone cables with polyethylene insulation in a plastic sheath GOSTR 51311-99).

However, such cables do not meet the waterproof requirements.

The closest known among those proposed by technical essence is a telephone cable of TPPep3 brand having conductive copper conductors insulated with polyethylene. Insulated cores are twisted into pairs, which are then twisted into elementary bundles wrapped in fastening thread or tape, and the latter are twisted into a core. A belt insulation of polymer tape, a screen of aluminum or aluminum-polymer tape, tinned copper contact wire and an insulating sheath of polymer material are applied over the core.

The inner space of the core and the gap between the belt insulation and the screen along the entire length is filled with a hydrophobic filler. (Telephone cables with polyethylene insulation in a plastic sheath GOSTR 51311-99).

A significant drawback of such a cable is the difficulties arising during their installation, the need for prolonged and thorough cleaning of cable elements from hydrophobic filler.

The task was to develop a cable design for communication, alarm and interlock systems that do not require a long and thorough cleaning of cable elements during installation while maintaining the water resistance of the cable core under operating conditions when the protective cover is damaged.

The technical result is achieved by the fact that the cable for communication systems, signaling and blocking, containing twisted into a pair or four insulated solid, film-porous or film-porous-film polymer material copper conductive wires that are twisted into elementary bundles wrapped with a fastening thread or tape twisted in turn into the core, belt insulation sequentially applied to the core, a shield made of aluminum or aluminum-polyethylene tape, tinned copper contact wire and insulating wire span of a polymeric material in elementary beams and between the elementary bundles contain threads and / or strips of water blocking material and the waist: isolation also made of a water blocking material.

In one embodiment, the cable may have elementary bundles and a core wrapped with threads or tapes of water blocking material.

In another embodiment, the cable may have a sheath made of aluminum coated with bitumen on top of the waist insulation.

In a further embodiment, the cable may, over the insulating sheath of polymeric material, have a sequentially applied pillow made of crepe paper tapes or non-woven fabric coated with a bitumen composition, armor made in the form of a winding of two steel tapes or corrugated steel tape, externally coated with a layer of bitumen , and the outer shell of a polymeric material.

In a further embodiment, the cable may, on top of the insulating sheath of polymer material, have a sequentially applied tape of water-blocking material, armor of steel-polymer tape and an outer protective sheath of polymer material.

The utility model is illustrated in the drawing, which shows a cable in section. The cable for communication, alarm and interlock systems contains copper conductive conductors 1, each of which is insulated 2. Insulated conductors are twisted into a pair or four, which are twisted into elementary bundles 3, the latter in turn are twisted into a core 4. Elementary bundles and core contain filaments from water blocking material 5. Elementary bundles and core are wrapped with threads or tapes from water blocking material 6.

A belt insulation of water blocking material 7, a screen of aluminum or aluminum-polymer tape 8, contact tinned copper wire 9, and a sheath of polymer material 10 are sequentially applied over the core over the core.

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 (45-120) mm.

Insulated cores are twisted into a couple or four, pairs or fours or cores are twisted together with water-blocking threads 5 into elementary bundles 3, which are wrapped with threads or tapes from water-blocking material 6 and twisted into a core 4 on twist-type frame-type twisting machines or SZ-twisting machines.

The overlay of belt insulation of water-blocking material 7, a screen of aluminum or aluminum-polymer tape 8, contact tinned copper wire 9 is carried out on twisting machines or is combined with the operation of applying an insulating sheath.

An insulating sheath of polymer material 10 is applied to an extrusion line having an extruder with a screw diameter of (90-250) mm.

In the armored version of the cable, the armor is applied on tape-armored vehicles or on the corrugated armor line.

The aluminum sheath is superimposed on an aluminum press or using a welding mill.

Claims (5)

1. A cable for communication, alarm and interlock systems, containing twisted pair or four insulated solid, film-porous or film-porous-film polymer material copper conductive wires that are twisted into elementary bundles, wrapped with a fastening thread or tape, twisted into their own a turn in the core, belt insulation sequentially applied to the core, a screen made of aluminum or aluminum-polyethylene tape, tinned copper contact wire and an insulating sheath made of a polymeric material, distinguishing ysya in that the elementary beams and between the elementary bundles contain threads and / or strips of water blocking material and the belt insulation is made of a water blocking material. 2. The cable according to claim 1, characterized in that the elementary bundles and core are wrapped with threads or tapes of water blocking material. 3. The cable according to claim 1 or 2, characterized in that over the belt insulation there is a sheath made of aluminum coated with bitumen. 4. The cable according to claim 1 or 2, characterized in that a cushion made of crepe paper tapes or non-woven fabric coated with a bitumen composition is sequentially applied over the insulating sheath of polymer material, the armor is made in the form of a winding of two steel tapes or corrugated steel tape, externally coated with a layer of bitumen, and the outer shell of a polymer material. 5. The cable according to claim 1 or 2, characterized in that a tape of water-blocking material, armor of steel-polymer tape and an outer protective sheath of polymer material are sequentially applied over the insulating sheath of polymer material.