CN216562508U - Oil-resistant coiled rubber-jacketed flexible cable - Google Patents
Oil-resistant coiled rubber-jacketed flexible cable Download PDFInfo
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- CN216562508U CN216562508U CN202123215999.6U CN202123215999U CN216562508U CN 216562508 U CN216562508 U CN 216562508U CN 202123215999 U CN202123215999 U CN 202123215999U CN 216562508 U CN216562508 U CN 216562508U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to the technical field of cables, in particular to an oil-resistant coiled rubber jacketed flexible cable. The oil-resistant coiled rubber jacketed flexible cable comprises a conductive wire harness, an oil-resistant isolation layer, a butyronitrile rubber inner protection layer and a low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin jacket layer. The outer wall of the conductive wire core in the conductive wire bundle is wrapped with an ethylene propylene rubber insulating layer. And a film wrapping tape is wound on the outer wall of the ethylene propylene rubber insulating layer. The oil-resistant isolation layer comprises a chloroprene rubber base layer. The chloroprene rubber base layer is wrapped on the outer wall of the multi-strand conducting wire bundle. The surface of the chloroprene rubber base layer is coated with a polyphenylene sulfide plastic layer. The butyronitrile rubber inner protective layer is coated on the outer wall of the oil-resistant isolating layer. The low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath layer is coated on the outer wall of the butyronitrile rubber inner protection layer. The oil-resistant coiled rubber jacketed flexible cable improves the oil resistance and the electrical insulation performance of the existing rubber jacketed flexible cable, ensures the safety of supplying power for underground equipment, and prolongs the service life of a power supply cable.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to an oil-resistant coiled rubber jacketed flexible cable.
Background
The rubber sleeve cable is a flexible and windable cable which is formed by taking a plurality of strands of fine copper wires as conductors and wrapping a rubber insulating layer and a rubber sheath on the outer side of each conductor. Among them, a general-purpose cabtyre flexible cable is often used in a use condition requiring repeated winding or dragging movement. For example, the connecting cable of the electric welding machine, the cable of the submersible motor and the cable of the photographic light source are rubber-sheathed flexible cables, so that the electric welding machine can be well adapted to the outdoor use environment and meet the motion requirements of an electric appliance or mobile equipment in the use process. The rubber jacketed flexible cable is widely applied to various fields by virtue of good comprehensive performance.
During oil production, a flexible rubber-jacketed cable is typically conveyed downhole via a cable drum to power downhole equipment. Under the oily environment, the rubber sheath and the rubber insulating layer of rubber jacketed flexible cable are easily eroded by petroleum, thus affecting the wear resistance of the rubber jacketed flexible cable and further reducing the service life of the power supply cable of the underground equipment. In addition, the rubber jacketed flexible cable is repeatedly wound and bent by the cable drum in a multi-oil environment, and the conductor inside the rubber jacketed flexible cable even leaks out, so that the potential safety hazard of power supply is caused. Therefore, the oil resistance and the abrasion resistance of the cabtyre cable are required to be further improved.
In summary, in the process of supplying power to the equipment under the oil well, how to design a cable to optimize the oil resistance of the existing rubber-sheathed flexible cable and improve the electrical insulation performance, thereby ensuring the safety of supplying power to the equipment under the oil well and further prolonging the service life of the power supply cable becomes a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The utility model aims to provide a cable for optimizing the oil resistance of the existing rubber-sheathed flexible cable and improving the electrical insulation performance in the process of supplying power to equipment under an oil well, thereby ensuring the safety of supplying power to the equipment under the oil well and further prolonging the service life of a power supply cable.
In order to achieve the purpose, the utility model adopts the following scheme: an oil-resistant coiled rubber jacketed flexible cable is provided, which comprises a conductive wire bundle, an oil-resistant isolation layer, a butyronitrile rubber inner protection layer and a low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath layer;
the conductive wire bundle comprises a conductive wire core, the outer wall of the conductive wire core is wrapped with an ethylene propylene rubber insulating layer, and a film wrapping tape is wound on the outer wall of the ethylene propylene rubber insulating layer;
the oil-resistant isolation layer comprises a chloroprene rubber base layer, the chloroprene rubber base layer is wrapped on the outer walls of the multiple conducting wire bundles, and the surface of the chloroprene rubber base layer is coated with a plastic layer;
the butyronitrile rubber inner protective layer is coated on the outer wall of the oil-resistant isolating layer;
the low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath layer is coated on the outer wall of the butyronitrile rubber inner protection layer.
Preferably, a filling strip is arranged in a gap between the conductive wire bundle and the oil-resistant isolation layer, and the outer wall of the filling strip is connected with the outer wall of the conductive wire bundle and the oil-resistant isolation layer respectively. So set up, the filler strip all provides radial support to the outer wall of wire harness and resistant oily isolation layer, is favorable to strengthening the toughness of cable, and then further prolongs the life of cable.
Preferably, the film wrapping tape is a polytetrafluoroethylene film wrapping tape, and the polytetrafluoroethylene film wrapping tape is spirally wound on the outer wall of the ethylene propylene rubber insulating layer along the axial direction of the conductive wire bundle. So set up, be favorable to avoiding the conductive wire core to break out from the EPR insulating layer, spirally wound polytetrafluoroethylene film band is convenient for according to the needs of insulation grade, the adjustment overlap degree, has further improved the electric insulation performance of cable.
Preferably, the filler strip is a vulcanized rubber filler strip. So set up, utilize the good elasticity of vulcanization type rubber for the filler strip is convenient for absorb impact energy at the radial better of cable, and then forms the protection to the inside conductor pencil of cable, and simultaneously, the filler strip that has good elasticity has also improved the tensile strength of cable, makes the cable can bear bigger axial load.
Preferably, the conductive wire core is formed by twisting tinned copper wires. So set up, stranded tinned copper wire transposition has increased the area of contact between the tinned copper wire together, and the physical characteristic of reunion tinned copper wire has reduced contact resistance's numerical value, has reduced the heat that the conductor core produced in the use, and then has avoided the oxidation of tinned copper wire, has further improved the safety in utilization of cable.
Preferably, the conductive wire bundle has a circular cross section. So set up for the outer wall of wire harness and the contact surface of resistant oily isolation layer are more level and smooth, are favorable to reducing the wearing and tearing of wire harness to resistant oily isolation layer, and then have further guaranteed the oil resistance of cable, thereby have prolonged the life of cable.
Preferably, the thickness of the ethylene propylene rubber insulating layer is 1.5mm-2mm, the thickness of the oil-resistant isolating layer is 0.2mm-0.5mm, the thickness of the film wrapping tape is 0.15mm-0.25mm, the thickness of the butyronitrile rubber inner protecting layer is 0.5mm-1mm, and the thickness of the low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath layer is 1.5mm-2.5 mm. According to the arrangement, the thickness parameters of the protective layers are set in a targeted manner according to the environments in different oil wells, and the manufacturing cost of the cable is further reduced under the condition that the oil resistance and the insulating performance are ensured.
Compared with the prior art, the oil-resistant coiled rubber jacketed flexible cable provided by the utility model has the following substantive characteristics and progresses:
1. the oil-resistant coiled rubber-sheathed flexible cable wraps the conductive wire bundle through the oil-resistant isolation layer, and the chloroprene rubber base layer with the polyphenylene sulfide plastic layer coated on the surface of the oil-resistant isolation layer is utilized to isolate the internal conductive wire bundle from a multi-oil environment, so that the oil resistance of the cable is improved, the ethylene propylene rubber insulation layer is prevented from being corroded by oil, and the safety of supplying power to underground equipment by the cable is ensured;
2. the butyronitrile rubber inner sheath and the low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath layer in the oil-resistant winding rubber-sheathed flexible cable form a double-layer extrusion structure on the outer wall of the oil-resistant isolation layer, so that the wear resistance of the cable is improved, the electrical insulation performance of the cable is further improved, and the service life of the cable is further prolonged.
Drawings
FIG. 1 is a schematic perspective view of an oil-resistant coiled cabtyre flexible cable according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of the oil-resistant coiled cabtyre cable of fig. 1.
Reference numerals: the anti-oil packaging structure comprises a tinned copper wire 1, an ethylene propylene rubber insulating layer 2, a thin film wrapping tape 3, a filling strip 4, an oil-resistant isolating layer 5, a butyronitrile rubber inner protecting layer 6 and a cross-linked polyolefin sheath layer 7.
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings.
An oil-resistant coiled cabtyre flexible cable as shown in fig. 1-2 is used for optimizing the oil resistance of the existing cabtyre flexible cable in the process of supplying power to equipment under an oil well. The oil-resistant winding rubber jacketed flexible cable is characterized in that the conductive wire bundle is wrapped by the oil-resistant isolation layer, the chloroprene rubber base layer with the polyphenylene sulfide plastic layer coated on the surface of the oil-resistant isolation layer is utilized, the internal conductive wire bundle is isolated from a multi-oil environment, the oil resistance of the cable is further improved, the ethylene propylene rubber insulation layer is prevented from being corroded by oil, and the safety of the cable for supplying power to underground equipment is guaranteed.
As shown in fig. 1, an oil-resistant coiled rubber jacketed flexible cable comprises a conductive wire bundle, an oil-resistant isolation layer 5, a butyronitrile rubber inner protection layer 6 and a low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin jacket layer 7.
The conductive wire bundle includes a conductive wire core. The outer wall of the conductive wire core is wrapped with an ethylene propylene rubber insulating layer 2. The outer wall of the ethylene propylene rubber insulating layer 2 is wound with a film wrapping tape 3.
The oil resistant barrier layer 5 comprises a neoprene base layer. The chloroprene rubber base layer is wrapped on the outer wall of the multi-strand conducting wire bundle. The surface of the neoprene base layer is coated with a layer of gum polymer, such as a layer of phenylene sulfide.
The butyronitrile rubber inner protective layer 6 is coated on the outer wall of the oil-resistant isolating layer 5. The low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath layer 7 is coated on the outer wall of the butyronitrile rubber inner protection layer 6. The butyronitrile rubber inner sheath 6 and the low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath layer 7 form a double-layer extrusion structure on the outer wall of the oil-resistant isolation layer 5, so that the wear resistance of the cable is improved, the electrical insulation performance of the cable is further improved, and the service life of the cable is further prolonged.
Wherein, the conductive wire core is formed by twisting tinned copper wires 1. So set up, 1 transposition of stranded tinned copper wire is in the same place, has increased the area of contact between 1 tinned copper wire. And the physical characteristics of the tinned copper wire 1 are combined, so that the numerical value of the contact resistance is greatly reduced, the heat generated by the conductive wire core in the use process is reduced, the oxidation of the tinned copper wire 1 is avoided, and the use safety of the cable is further improved.
The film wrapping tape 3 can be a polytetrafluoroethylene film wrapping tape. As shown in fig. 1, the teflon film tape is spirally wound on the outer wall of the ethylene propylene rubber insulating layer 2 along the axial direction of the conductive wire bundle. By the arrangement, the conductive wire core is prevented from being broken out of the ethylene propylene rubber insulating layer 2. The spirally wound polytetrafluoroethylene film wrapping tape is convenient for adjusting the overlapping degree according to the requirement of the insulation grade, and the electric insulation performance of the cable is further improved.
As shown in fig. 1, a filler strip 4 is arranged in the gap between the conductive wire bundle and the oil-resistant isolating layer 5. The outer wall of the filler strip 4 is respectively connected with the outer wall of the conductive wire bundle and the oil-resistant isolating layer 5. So set up, filler strip 4 all provides radial support to the outer wall of conductor pencil and resistant oily isolation layer 5, is favorable to strengthening the toughness of cable, and then further prolongs the life of cable.
For example, an oil-resistant coiled cabtyre cable as shown in fig. 2 has 4 strands of conductive wires inside, and the 4 strands of conductive wires and the oil-resistant isolation layer 5 form 4 cavities for placing the filler strips 4. The 4-strand conducting wire bundle can be selected to have different outer diameter sizes according to the use function requirement. Therefore, the size of the 4 cavities also varies with the outer diameter of different conductive wire bundles. Thus, the outer diameter dimension of the filler strip 4 is also selected according to the outer diameter dimension of the conductive wire bundle. The number of strands of the conductive wire bundle can be selected to be 1-8 according to actual needs.
Wherein, the filling strip 4 can be a vulcanized rubber filling strip 4. So set up, utilize the good elasticity of vulcanization type rubber for filler strip 4 is convenient for absorb impact energy at the radial of cable better, and then forms the protection to the electric conduction pencil inside the cable. Meanwhile, the filling strips 4 with good elasticity also improve the tensile strength of the cable, so that the cable can bear larger axial load.
As shown in fig. 2, the conductive wire bundle has a circular cross section. So set up for the outer wall of wire harness and resistant oily isolation layer 5's contact surface is more level and smooth, is favorable to reducing the wearing and tearing of wire harness to resistant oily isolation layer 5, and then has further guaranteed the oil resistance of cable, thereby has prolonged the life of cable.
The thickness of the ethylene propylene rubber insulating layer 2 is 1.5mm-2mm, the thickness of the oil-resistant isolating layer 5 is 0.2mm-0.5mm, the thickness of the film wrapping tape 3 is 0.15mm-0.25mm, the thickness of the butyronitrile rubber inner protecting layer 6 is 0.5mm-1mm, and the thickness of the low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath layer 7 is 1.5mm-2.5 mm. According to the arrangement, the thickness parameters of the protective layers are set in a targeted manner according to the environments in different oil wells, and the manufacturing cost of the cable is further reduced under the condition that the oil resistance and the insulating performance are ensured.
The thickness of the ethylene propylene rubber insulating layer 2 is preferably 1.6mm, the thickness of the oil-resistant isolating layer 5 is preferably 0.2mm, the thickness of the film wrapping tape 3 is preferably 0.2mm, the thickness of the nitrile rubber inner protection layer 6 is preferably 0.8 mm, and the thickness of the low-smoke halogen-free flame-retardant oil-resistant cross-linked polyolefin sheath layer 7 is preferably 1.8 mm.
The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments may be made in the present invention in addition to the above embodiments. It will be understood by those skilled in the art that various changes, substitutions of equivalents, and alterations can be made without departing from the spirit and scope of the utility model.
Claims (8)
1. An oil-resistant coiled rubber jacketed flexible cable is characterized by comprising a conductive wire bundle, an oil-resistant isolating layer, a butyronitrile rubber inner protecting layer and a cross-linked polyolefin sheathing layer;
the conductive wire bundle comprises a conductive wire core, the outer wall of the conductive wire core is wrapped with an ethylene propylene rubber insulating layer, and a film wrapping tape is wound on the outer wall of the ethylene propylene rubber insulating layer;
the oil-resistant isolation layer comprises a chloroprene rubber base layer, the chloroprene rubber base layer is wrapped on the outer walls of the multiple conducting wire bundles, and the surface of the chloroprene rubber base layer is coated with a plastic layer;
the butyronitrile rubber inner protective layer is coated on the outer wall of the oil-resistant isolating layer;
the cross-linked polyolefin sheath layer is coated on the outer wall of the butyronitrile rubber inner protection layer.
2. The oil-resistant coiled cabtyre flexible cable according to claim 1, wherein a filler strip is disposed in the gap between the conductive bundle and the oil-resistant insulation layer.
3. The oil-resistant coiled cabtyre flexible cable according to claim 2, wherein the outer wall of the filler strip is connected to the outer wall of the conductive wire bundle and the oil-resistant insulation layer, respectively.
4. The oil-resistant coiled rubber-sheathed flexible cable according to claim 1, wherein the film wrapping tape is a polytetrafluoroethylene film wrapping tape, and the polytetrafluoroethylene film wrapping tape is spirally wound on the outer wall of the ethylene propylene rubber insulating layer along the axial direction of the conductive wire bundle.
5. The oil resistant coiled cabtyre cable according to claim 2, wherein the filler strip is a vulcanized rubber filler strip.
6. The oil resistant coiled cabtyre cable according to claim 1, wherein the conductive wire core is stranded with tinned copper wires.
7. The oil resistant coiled cabtyre flexible cable according to claim 1, wherein the cross-section of the conductive bundle is circular.
8. The oil-resistant coiled rubber-sheathed flexible cable according to any one of claims 1 to 6, wherein the thickness of the ethylene-propylene rubber insulating layer is 1.5mm to 2mm, the thickness of the oil-resistant isolating layer is 0.2mm to 0.5mm, the thickness of the film wrapping tape is 0.15mm to 0.25mm, the thickness of the butyronitrile rubber inner sheath layer is 0.5mm to 1mm, and the thickness of the crosslinked polyolefin sheath is 1.5mm to 2.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123215999.6U CN216562508U (en) | 2021-12-20 | 2021-12-20 | Oil-resistant coiled rubber-jacketed flexible cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123215999.6U CN216562508U (en) | 2021-12-20 | 2021-12-20 | Oil-resistant coiled rubber-jacketed flexible cable |
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| Publication Number | Publication Date |
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| CN216562508U true CN216562508U (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123215999.6U Active CN216562508U (en) | 2021-12-20 | 2021-12-20 | Oil-resistant coiled rubber-jacketed flexible cable |
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- 2021-12-20 CN CN202123215999.6U patent/CN216562508U/en active Active
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