RU21692U1 - ELECTRICAL CABLE - Google Patents

Description

ELECTRICAL CABLE

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

A known design of an armored cable containing twisted together or parallel conductive conductors, each of which is covered with plastic insulation and a plastic sheath (Cables with polyethylene insulation for submersible pumps. TU 16-505.129-82).

A disadvantage of the known design is the low elasticity and the possibility of cracking of the plastic shells of the cores.

Also known is an electric cable for submersible electric pump installations, containing conductive conductors laid in parallel, each of which is covered with plastic insulation and a rubber sheath, enclosed in general armor made of corrosion-resistant metal tape (Installations of submersible centrifugal pumps for oil production. International translator. Center "Science and Technology" 1998, p. 418).

This technical solution is the closest to the proposed technical essence.

MKI7N01 V 7/18

The task was to develop the design11 of an electric cable for the installation of submersible electric pumps with an increased service life.

The technical result is achieved by the fact that in the electric cable for the installation of submersible electric pumps, containing twisted together or stacked in parallel conductive wires, each of which

covered with plastic insulation and a shell, enclosed in a general armor of a corrosion-resistant metal tape, the shell is made of polyester thermoplastic elastomer.

According to one embodiment of the electric cable, a bandage is applied over the sheath of each core in the form of a winding made of plastic tape and / or a braid of synthetic threads.

The utility model is illustrated by drawings, in which an electric cable is shown in section:

FIG. 1 - cable containing twisted yoke conductors;

FIG. 2 - cable containing parallel conductive conductors;

FIG. 3 - cable, additionally containing bandages over the shells of the cores.

The electric cable contains conductive conductors 1, each of which is covered with plastic insulation 2 and sheath 3, enclosed in a common armor 4 of a corrosion-resistant metal tape.

The cable may also contain 5 bandages over the casing of the cores.

Below is information confirming the industrial applicability of the utility model.

As the sheath material of the conductors of the proposed electric cable, polyester thermoplastic elastomers of the Heitrel, Pibiflex and others type are used.

The manufacture of the conductive core 1 is carried out by drawing the wire rod to the required size or by twisting the wires on conventional drawing or twisting equipment. Further, insulation 2 and sheath 3 are applied to the conductive core on extrusion machines. On top of twisted together or laid in parallel cores impose armor 4 on the armoring machine.

It is allowed over the sheath 3 to impose a brace 5 on the wrapping and / or braiding machines.

The proposed electric cable has an increased service life due to the implementation of the shells of the cores of polyester thermoplastic elastomer.

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 plastic insulation and a sheath, enclosed in a common armor of a corrosion-resistant metal tape, characterized in that the sheath is made of polyester thermoplastic elastomer. 2. The electric cable according to claim 1, characterized in that a bandage is applied over the sheath of each core in the form of a winding of plastic tape and / or a braid of synthetic threads.