RU198147U1 - CABLE FOR INSTALLATION OF SUBMERSIBLE ELECTRIC PUMPS - Google Patents

Abstract

The invention relates to cable technology, namely, cable designs for supplying electric energy to submersible electric motors of oil production, water lifting and pumping liquids from pits, reservoirs and ponds. Cable for submersible electric pump installations containing copper conductive cores, each of which covered with polyimide-fluoroplastic film insulation and polymer insulation, a cushion for armor made in the form of a winding, and armor made of steel tape, characterized in that the polyimide-fluoroplastic film is made in the form of a two-layer winding with an overlap of at least 50%, and polymer insulation is made of fluorinated ethylene-propylene with a melting point of at least 250 ° C.

Description

The technical field to which the utility model relates.

The utility model relates to cable technology, namely to cable designs designed to supply electrical energy to submersible motors of oil production, water lifting and pumping liquids from pits, reservoirs and reservoirs.

The prior art.

Known electrical cable for the installation of submersible electric pumps, containing laid parallel in one plane or twisted together conductive wires, each of which is coated with insulation and a sheath of block copolymer of propylene with ethylene, including 0.1-0.6 wt. % copper deactivator, enclosed in a corrosion-resistant tape armor, characterized in that the winding is made of fibrous or film material over the sheath of each core (Patent RU 79212, published on December 20, 2008, bull. No. 35).

Signs of a known cable, which are common with the features of the claimed utility model, are that the cable contains three conductive wires laid in parallel in the same plane, each of which is covered with insulation and sheath, contains tape armor. However, the permissible heating temperature of the conductive conductors of the specified cable is up to 120 ° C.

The closest analogue (prototype) is a cable for installation of submersible electric pumps, containing conductive conductors laid parallel to the same plane or twisted together, each of which is coated with ethylene-propylene rubber insulation and a sheath and bandage made in the form of a winding from synthetic tape and / or braid made of synthetic yarns enclosed in corrosion-resistant tape armor, characterized in that the shell is made of lead-antimony alloy, and between the conductive core and rubber insulation there is a sublayer of materials selected from the group: fluoroplastic film, polyimide-fluoroplastic film, enamel insulation and their combinations. (Patent RU 80057, published January 20, 2009, bull. No. 2).

Signs of a well-known cable that are common with the features of the claimed utility model are that the cable for submersible electric pump installations contains three conductive wires laid in parallel, on top of each of which is insulated with a polyimide-fluoroplastic film and a polymer sheath, contains tape armor.

The disadvantage of the prototype is the use as insulation of ethylene propylene rubber, and the use of a shell of lead-antimony alloy.

The technical problem is the need to reduce the dimensions of the cable, reduce material consumption, as well as reduce the weight of the cable.

Disclosure of the essence of the utility model.

The technical result is achieved by the fact that the conductive conductors are laid in parallel, each conductive core is coated with two-layer insulation of polyimide-fluoroplastic film with an overlap of at least 50%, and insulation of fluorinated ethylene-propylene with a melting point of at least 250 ° C, a cushion is applied over the conductive veins under armor in the form of winding tapes and armor from profiled steel galvanized or corrosion-resistant tape.

The use of polyimide-fluoroplastic film and fluorinated ethylene-propylene as insulation is more reliable than insulation from ethylene-propylene rubber, and it allows to exclude the lead-antimony alloy shell from the structure. Due to its high dielectric characteristics, sufficient strength and thermal stability, the range of operating temperatures of fluorinated ethylene-propylene lies in the range from minus 180-190 ° С to plus 205 ° С. The material provides resistance to aging, chemical inertness, heat resistance, slight water absorption.

Implementation of a utility model.

Within the claimed patent rights, the following embodiments of the utility model are possible.

The cable conductors are made of copper wires. Two-layer insulation of polyimide-fluoroplastic film in the form of a two-layer winding, superimposed with an overlap of at least 50%, is applied to the conductors. Fluorinated ethylene propylene insulation is applied on top. Insulated conductors are laid in parallel. Marking tape and a pillow under the armor, made in the form of a winding tape, are laid on top. On top of the pillow, armor is made of profiled galvanized steel or corrosion-resistant tape.

Claims (1)

Cable for submersible electric pump installations, containing copper conductive cores, each of which is coated with polyimide-fluoroplastic film insulation, and polymer insulation, armor cushion made in the form of a winding, and armor made of steel tape, characterized in that polyimide-fluoroplastic the film is made in the form of a two-layer winding with an overlap of at least 50%, and the polymer insulation is made of fluorinated ethylene-propylene with a melting point of at least 250 ° C.