CN202694975U - Power cable special for oil well - Google Patents

Abstract

The utility model discloses a power cable special for an oil well. The power cable is characterized in that conductors employ tinned soft copper wires; an insulated wire core is formed by extruding ethylene/propylene copolymer on each conductor; a plurality of insulated wire cores and soft filling ropes are stranded, cabled, and bound by a winding tape to form a cable core; a liner layer, an armored layer and an outer jacket layer are sequentially arranged on an outer layer of the cable core; the liner layer and the outer jacket layer are respectively formed by extrusion; and the armored layer is formed by weaving metal wires and fiber wires. The power cable special for the oil well has the characteristics of softness, high/low temperature resistance, oil resistance, moisture resistance, mechanical impact resistance and the like, is applicable to working environment and light in weight, and can serve as an electrical connection line in the occasions such as oil well drilling, an oil platform and a port.

Description

Special power cable for oil well

technical field

The utility model relates to a power cable, in particular to a special power cable for oil wells, and belongs to the technical field of electric wires and cables.

Background technique

Most of the cables used by oil exploration platforms in the prior art are similar in structure to marine cables, with synthetic rubber (such as EPDM) as insulation, and heat-resistant, oil-resistant, flame-retardant materials (such as HOFR) as sheaths. In order to enhance mechanical protection and electrical protection, braided galvanized steel wire is usually used as armor. Although the cable with this structural form has good mechanical and electrical properties and flame retardancy, there are problems in that the flexibility of the cable is not ideal and the mechanical strength of the cable outer sheath is not high enough.

Contents of the invention

The utility model is to avoid the shortcomings of the above-mentioned prior art, and provides a special power cable for oil wells, which not only has excellent characteristics of high temperature resistance, low temperature resistance, oil resistance, moisture resistance and mechanical impact resistance, but also is light in weight and durable. Soft, in order to meet the corresponding use requirements of oil well drilling, oil platforms, ports and other places.

The utility model adopts following technical scheme for solving technical problems:

The utility model special power cable for oil well is characterized in that the conductor adopts tinned annealed copper wire, and ethylene-propylene rubber is extruded on the conductor to form an insulated wire core, which is twisted into a cable by multiple insulated wire cores and soft filling ropes and passed through The cable core is formed by wrapping with tape, and the inner lining layer formed by extrusion, the armor layer composed of braided metal wires and fiber filaments, and the outer sheath layer formed by extrusion are sequentially arranged on the outer layer of the cable core.

The structural features of the special power cable for oil wells of the utility model also lie in:

The conductor adopts a tinned copper bundle twisted, strand twisted round compact structure.

The soft filling rope is made of fiber braided rope.

The armor layer is formed by weaving galvanized steel wires and nylon wires with the same number of spindles and opposite directions.

The inner lining layer and the outer sheath layer are formed by extruding flame-retardant polyurethane thermoplastic elastomer or chlorosulfonated polyethylene as raw materials.

Compared with the prior art, the beneficial effects of the utility model are reflected in:

1. The cable of the present invention is resistant to high temperature, low temperature, oil, moisture, and mechanical shock. It is light in weight and soft, and can meet the corresponding use requirements of oil well drilling, oil platforms, ports and other places.

2. In the utility model, tinned copper wire strands are stranded and strands are stranded in a round compact structure. By adopting the compact drawing process, the flexibility of the cable is further improved and the outer diameter of the cable is reduced;

3. The utility model is filled with fiber braided rope, and the longitudinal tensile strength of the cable is further improved by using fiber braided rope with high strength, super softness, light specific gravity, and non-absorbent;

4. The armor layer of the utility model is braided by galvanized steel wire and nylon wire, which not only plays the role of metal shielding, but also improves the impact resistance, extrusion resistance and mechanical tension resistance of the cable, and at the same time improves the performance of the cable. softness;

5. The inner lining layer and the outer sheath layer of the utility model are made of flame-retardant polyurethane thermoplastic elastomer or chlorosulfonated polyethylene, which has high strength, high elongation, excellent oil resistance, convenient processing, and excellent Low temperature resistance performance.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Symbols in the figure: 1 conductor, 2 insulated wire core, 3 filling rope, 4 tape, 5 inner lining layer, 6 armor layer, 7 outer sheath layer.

Detailed ways

Referring to Fig. 1, in this embodiment, it is a four-core oil well special power cable. The conductor 1 is made of tinned annealed copper wire, and ethylene-propylene rubber material is extruded on the conductor 1 to form an insulated core 2, which consists of multiple insulated cores 2 and soft Type filling rope 3 is twisted into a cable and wrapped with tape 4 to form a cable core. Outside the cable core, an inner lining layer 5 formed by extrusion, an armor layer 6 composed of braided metal wire and fiber wire, and an outer layer formed by extrusion are arranged in sequence. Sheath layer 7.

In the specific implementation, the conductor 1 adopts a tinned copper wire bundle twisted, twisted round compact structure; the filling rope 3 adopts a high-strength, super soft, light specific gravity, non-absorbent fiber braided rope; the armor layer 6 is galvanized steel wire and Nylon filaments are woven with the same number and opposite directions; the inner lining layer 5 and the outer sheath layer 7 are extruded from flame-retardant polyurethane thermoplastic elastomer or chlorosulfonated polyethylene.

Claims (5)

1. oil well specialized power cable, it is characterized in that conductor (1) adopts zinc-plated soft copper silk, extrude ethylene-propylene rubber at described conductor (1) and consist of insulated wire cores (2), consist of cable core by many eradications edge core (2) with soft type gasket for packing (3) twisted synthesizing cable and through band (4) wrapping, set gradually the armour (6) that the inner covering (5), knit wire and the filament that extrude formation consists of at the skin of described cable core, and the external sheath layer (7) that extrudes formation.

2. oil well specialized power cable according to claim 1 is characterized in that described conductor (1) adopts tin-coated copper tow strand, a burst strand circle to press structure.

3. oil well specialized power cable according to claim 1 is characterized in that described soft type gasket for packing (3) is to adopt the fibrage rope.

4. oil well specialized power cable according to claim 1 is characterized in that described armour (6) is identical by number of spindles with Polyamide Yarns for zinc-coated wire, the opposite direction braiding forms.

5. oil well specialized power cable according to claim 1 is characterized in that it is that raw material extrudes and forms that described inner covering (5) and external sheath layer (7) adopt flame-retardant polyurethane thermoplastic elastomer (TPE) or chlorosulfonated polyethylene.

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