RU34031U1 - Electrical cable - Google Patents

Abstract

1. An electric cable for submersible electric pump installations, containing conductive wires twisted between each other or laid in parallel, each of which is coated with rubber or plastic insulation and a bandage made in the form of a winding from a metal tape or a winding from a plastic tape and / or braid made of synthetic threads, and armor made of metal tape, characterized in that on top of the twisted or parallel strands a common pillow is applied in the form of a winding of fabric or synthetic ribbons and / or synthetic braids cally nitey.2. The electric cable according to claim 1, characterized in that a sheath of rubber or thermoplastic elastomer is applied over the insulation under the bandage of the core.

Description

ELECTRICAL CABLE

The utility model relates to cable technology and can be used, for example, in the design of electric cables for the installation of submersible electric pumps.

A known cable design containing twisted together or parallel conductive conductors, each of which is covered with plastic insulation, a common pillow in the form of a winding fabric tape and armor made of metal tape (Installing submersible centrifugal pumps for oil production. International translator. Center Science and technology. 1998.S. 401).

However, this cable is not reliable enough due to the mechanical effects of the armor on the insulation of the cores.

Also known is an electric cable for installing submersible electric pumps, containing conductive conductors laid in parallel, each of which is covered with plastic insulation, a rubber sheath and a bandage made in the form of a winding of plastic tape and a braid of synthetic threads, and armor of a metal tape (Installations of submersible centrifugal pumps for oil production. International translator. Center for Science and Technology. 1998.P.430).

This technical solution is the closest to the one proposed in terms of technical flexibility.

However, its disadvantage is the possibility of mechanical damage to the bandages and shells of the wires under the influence of armor.

The task was to increase the reliability of the cable design for the installation of submersible electric pumps by eliminating the mechanical effects of the armor on the bandages placed on top of the insulation or shells of the cores.

The technical result is achieved by the fact that in the electric cable for the installation of submersible electric pumps containing twisted together or parallel conductive conductors, each of which is covered with rubber or plastic insulation and a bandage made in the form of a winding made of metal or

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plastic tape and / or braid made of synthetic threads, and armor made of metal tape, over twisted or laid cores, a common pillow is applied in the form of a winding of a fabric or plastic tape and / or braid made of synthetic threads.

According to one embodiment of the electric cable, a sheath of rubber or thermoplastic elastomer is applied over the insulation of the core under the bandage.

The utility model is illustrated in the drawing, which shows an electric cable in section:

FIG. 1 - cable containing conductors laid in parallel.

FIG. 2 - cable, additionally containing on top of the insulation of the cores under the bandages of the sheath of rubber or thermoplastic elastomer.

The electric cable contains conductive conductors 1, insulation 2, bandages 3, a common cushion 4 and armor 5.

The cable may also contain sheaths 6, laid on top of the insulation 2 under the bandages 3.

As a common substrate, a winding of fabric or synthetic tapes and / or a braid of synthetic threads are used.

As the material of the shells of the veins, rubber or thermoplastic elastomers are used.

The manufacture of conductive core 1 is carried out by drawing or twisting wires on serial equipment. Overlay insulation 2 and shells 6 is carried out on extrusion machines. The imposition of bandages 3 and a common pillow 4 is produced on a serial winding and / or braiding equipment. The imposition of armor is carried out on serial armored vehicles.

The proposed electric cable has increased reliability due to the use of a common cushion made in the form of a winding from fabric or synthetic tapes and / or a braid from synthetic threads.

Claims (2)

1. An electric cable for submersible electric pump installations, containing conductive wires twisted between each other or laid in parallel, each of which is coated with rubber or plastic insulation and a bandage made in the form of a winding from a metal tape or a winding from a plastic tape and / or braid made of synthetic threads, and armor made of metal tape, characterized in that on top of the twisted or parallel strands a common pillow is applied in the form of a winding of fabric or synthetic ribbons and / or synthetic braids matic thread. 2. The electric cable according to claim 1, characterized in that a sheath of rubber or thermoplastic elastomer is applied over the insulation under the bandage of the core.