CN216749400U

CN216749400U - Novel special ground cable for oil field

Info

Publication number: CN216749400U
Application number: CN202220477293.2U
Authority: CN
Inventors: 田志明; 张书军; 张宝龙; 李宏章; 王怀安; 邢涛; 李君�; 窦丽梅; 孙连发; 吴健; 张永恒; 董瀚元; 田亚飞
Original assignee: Tangshan Huatong Special Cable Manufacturing Co ltd
Current assignee: Tangshan Huatong Special Cable Manufacturing Co ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-06-14
Anticipated expiration: 2032-03-07

Abstract

The utility model relates to a novel ground cable special for an oil field, and belongs to the technical field of cables. The technical scheme of the utility model is as follows: the power cable comprises a plurality of conductors which are twisted together to form a power cable core (1), wherein an inner screen (2), an ethylene propylene rubber insulator (3) and an outer screen (4) are sequentially extruded from inside to outside from the outer side of the power cable core (1), a copper strip (5) is wrapped outside the outer screen (4) to form the power cable core, the three power cable cores are uniformly arranged along the circumference, the excircles of two adjacent power cable cores are tangent, the number of ground wires (6) is three, and a ground wire (6) is arranged between two adjacent power cable cores; flame-retardant PP ropes (7) are filled among the three power wire cores and the three ground wires (6) to form cables, the cables are wrapped by single-sided adhesive tapes (8), welding and pricking grain aluminum armors (9) are wrapped outside the single-sided adhesive tapes (8), and the welding and pricking grain aluminum armors (9) are extruded out of an outer sheath (10). The utility model integrally seals the insulated wire on the axial length of the cable, thereby ensuring the use safety of the cable.

Description

Novel special ground cable for oil field

Technical Field

The utility model relates to a novel ground cable special for an oil field, and belongs to the technical field of cables.

Background

The oil field ground surface environment is abominable, because the production greasy dirt that the earth's surface environment can't be avoided among the oil recovery process, sewage, harmful substance such as chemical reagent, the cable that ground surface environment laid in the past adopts ordinary power cable, the working condition environment on oil field ground is not considered to the sheath material of cable, lead to the sheath inflation, the fracture, the armor of cable generally adopts steel wire or steel band armor simultaneously, only consider mechanical factor in the cable design, the armor does not form holistic sealed effect like this, oil gas, moisture, chemical reagent can be along with the clearance entering contact insulation layer of armor, the corruption cable, harm cable insulating properties, cause the cable to puncture, lead to the cable unable use, cause very big risk for safety in production.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel special ground cable for an oil field, which is characterized in that the cable structure is optimized, the traditional steel wire and steel strip armoring mode is replaced by a welding and pricking aluminum armor mode, the insulated wire of the cable is integrally sealed, the use safety of the cable is ensured, meanwhile, a single-sided adhesive tape is added, the adhesive surface of the single-sided adhesive tape has insulating property, the metal shielding of the wire core and the welding and pricking aluminum armor are physically isolated, and the problems in the background technology are solved.

The technical scheme of the utility model is as follows:

a novel ground cable special for an oil field comprises power wire cores, an inner screen, ethylene propylene rubber insulation, an outer screen, a copper strip, ground wires, a flame-retardant PP rope, a single-sided adhesive tape, a welded-grain aluminum armor and an outer sheath, wherein a plurality of conductors are twisted together to form the power wire cores; and flame-retardant PP rope cabling is filled between the three power wire cores and the three ground wires, the cabling is wrapped by a single-sided adhesive tape, a welding and pricking line aluminum armor is coated outside the single-sided adhesive tape, and an outer sheath is extruded outside the welding and pricking line aluminum armor.

The excircle of each ground wire is tangent to the excircles of the two adjacent power wire cores.

One side of the single-side adhesive tape is coated with adhesive, and the other side is cloth.

The utility model has the following positive effects: the welding and grain-pricking aluminum armor mode is adopted to replace the traditional steel wire and steel belt armor, aluminum has excellent corrosion resistance, and the insulating wires on the axial length of the cable are integrally sealed, so that the use safety of the cable is ensured; meanwhile, a single-side adhesive tape is arranged, and the adhesive surface has insulating property, so that the metal shielding of the wire core and the welding and pricking aluminum armor are physically isolated.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure: the cable comprises a power wire core 1, an inner screen 2, an ethylene propylene rubber insulator 3, an outer screen 4, a copper strip 5, a ground wire 6, a flame-retardant PP rope 7, a single-sided adhesive tape 8, a welded-grain aluminum armor 9 and an outer sheath 10.

Detailed Description

The utility model is further described with reference to the following figures and examples:

a novel ground cable special for an oil field comprises a power wire core 1, an inner screen 2, an ethylene propylene rubber insulator 3, an outer screen 4, a copper strip 5, an earth wire 6, a flame-retardant PP rope 7, a single-sided adhesive tape 8, a welded and taped aluminum armor 9 and an outer sheath 10, wherein a plurality of conductors are twisted together to form the power wire core 1, the inner screen 2, the ethylene propylene rubber insulator 3 and the outer screen 4 are sequentially extruded from the outer side of the power wire core 1 from inside to outside, the copper strip 5 is wrapped outside the outer screen 4 to form the power wire core, the three power wire cores are uniformly arranged along the circumference, the excircles of two adjacent power wire cores are tangent, the number of the earth wires 6 is three, and an earth wire 6 is arranged between two adjacent power wire cores; flame-retardant PP ropes 7 are filled among the three power wire cores and the three ground wires 6 to form cables, the cables are wrapped with single-sided adhesive tapes 8, welding-pricked aluminum armors 9 are wrapped outside the single-sided adhesive tapes 8, and outer sheaths 10 are extruded outside the welding-pricked aluminum armors 9.

The excircle of each ground wire 6 is tangent to the excircles of the two adjacent power wire cores.

One side of the single-side adhesive tape 8 is coated with adhesive, and the other side is cloth.

The welding grain-binding aluminum armor 9 is formed by binding grains after an aluminum tape is lapped and welded.

The conductor is a class 2 cable copper conductor, and the conductor is a compressed conductor.

The outer sheath material is a PVC sheath, and the PVC sheath meets the following conditions:

the first condition is as follows: IRM902 oil: 100 ± 1 ℃, time: 96h

Retention rate of tensile strength: not less than 50%, elongation retention: not less than 50%

And a second condition: IRM902 oil: 75 ± 1 ℃, time: 60d

Retention rate of tensile strength: not less than 65%, elongation retention: not less than 65 percent

The oil-resistant level of the PVC sheath meets the requirement of American standard dual additional oil resistance, and under the premise of ensuring the original mechanical property, the oil-resistant property of the sheath material is effectively improved, so that the cable can be ensured to be in a long-term environment in an oil field, the design requirement is met, and the formula of the PVC sheath is as follows: PVC particles: 75 parts, calcium carbonate: 25 parts, chlorinated paraffin: 7.5 parts, 32 parts of DOP, three-salt slurry: 14.4 parts, low molecular polyethylene wax: 0.4 part, 0.6 part of HG-104, and the weight ratio of nitrile rubber: 19 parts of (A).

The three ground wires are placed in the gaps of the three power wire cores, and the flame-retardant PP ropes are placed in the gaps of the power wire cores and the ground wires, so that the cable formation of the wire cores is ensured to be round.

The single-side adhesive tape is coated with adhesive and cloth, and the adhesive surface has insulating property, so that the metal shielding and the welding and pricking aluminum armor of the wire core are physically isolated.

The welded and banded armor adopts an aluminum strip, and aluminum and oxygen in the air react at normal temperature to generate a layer of compact aluminum oxide film on the surface of the aluminum, so that the aluminum in the aluminum is prevented from being further oxidized, and the aluminum has excellent corrosion resistance.

The aluminum belt in the welded and banded aluminum armor is 1060-O in grade, so that the aluminum belt is soft and easy to form.

The aluminum strip in the welding and grain-binding aluminum armor is welded by argon arc welding, so that the welding line is bright and smooth, and no burr is generated.

The aluminum belt is wrapped outside the single-sided adhesive tape, then the aluminum belt is welded and is subjected to grain binding after welding, the shape of the grain binding is a spiral shape, and the aluminum belt after the grain binding is welded is a welded grain binding aluminum armor.

Claims

1. The utility model provides a novel special surface cable in oil field which characterized in that: the cable comprises power cable cores (1), an inner screen (2), ethylene propylene rubber insulation (3), an outer screen (4), a copper strip (5), a ground wire (6), a flame-retardant PP rope (7), a single-side adhesive tape (8), a welded and taped aluminum armor (9) and an outer sheath (10), wherein a plurality of conductors are twisted together to form the power cable cores (1), the inner screen (2), the ethylene propylene rubber insulation (3) and the outer screen (4) are sequentially extruded out of the outer side of the power cable cores (1) from inside to outside, the copper strip (5) is wrapped outside the outer screen (4) to form the power cable cores, the three power cable cores are uniformly arranged along the circumference, the excircles of two adjacent power cable cores are tangent, the number of the ground wires (6) is three, and one ground wire (6) is arranged between two adjacent power cable cores; flame-retardant PP ropes (7) are filled among the three power wire cores and the three ground wires (6) to form cables, the cables are wrapped by single-sided adhesive tapes (8), welding and pricking grain aluminum armors (9) are wrapped outside the single-sided adhesive tapes (8), and the welding and pricking grain aluminum armors (9) are extruded out of an outer sheath (10).

2. The novel surface cable special for the oil field according to claim 1, wherein: the excircle of each ground wire (6) is tangent to the excircles of the two adjacent power wire cores.

3. The novel surface cable special for the oil field as claimed in claim 1 or 2, wherein: one side of the single-side adhesive tape (8) is coated with glue, and the other side is cloth.