CN110580975A - water-resistant winding wire and manufacturing method thereof - Google Patents
water-resistant winding wire and manufacturing method thereof Download PDFInfo
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- CN110580975A CN110580975A CN201910943200.3A CN201910943200A CN110580975A CN 110580975 A CN110580975 A CN 110580975A CN 201910943200 A CN201910943200 A CN 201910943200A CN 110580975 A CN110580975 A CN 110580975A
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- 238000004804 winding Methods 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 29
- 238000009413 insulation Methods 0.000 claims abstract description 60
- 239000004952 Polyamide Substances 0.000 claims abstract description 54
- 229920002647 polyamide Polymers 0.000 claims abstract description 54
- 239000004677 Nylon Substances 0.000 claims abstract description 23
- 229920001778 nylon Polymers 0.000 claims abstract description 23
- 229920001721 polyimide Polymers 0.000 claims abstract description 23
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 23
- 239000000057 synthetic resin Substances 0.000 claims abstract description 23
- 239000004719 irradiation crosslinked polyethylene Substances 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 94
- 229910052802 copper Inorganic materials 0.000 claims description 59
- 239000010949 copper Substances 0.000 claims description 59
- 239000004020 conductor Substances 0.000 claims description 30
- 239000004698 Polyethylene Substances 0.000 claims description 27
- -1 polyethylene Polymers 0.000 claims description 27
- 229920000573 polyethylene Polymers 0.000 claims description 27
- 238000004132 cross linking Methods 0.000 claims description 22
- 238000004140 cleaning Methods 0.000 claims description 16
- 229920000742 Cotton Polymers 0.000 claims description 14
- 239000004744 fabric Substances 0.000 claims description 14
- 239000000428 dust Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000004513 sizing Methods 0.000 claims description 7
- 238000003181 co-melting Methods 0.000 claims description 6
- 238000010101 extrusion blow moulding Methods 0.000 claims description 6
- 238000010292 electrical insulation Methods 0.000 claims description 4
- 239000012943 hotmelt Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 2
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- SFMJNHNUOVADRW-UHFFFAOYSA-N n-[5-[9-[4-(methanesulfonamido)phenyl]-2-oxobenzo[h][1,6]naphthyridin-1-yl]-2-methylphenyl]prop-2-enamide Chemical compound C1=C(NC(=O)C=C)C(C)=CC=C1N1C(=O)C=CC2=C1C1=CC(C=3C=CC(NS(C)(=O)=O)=CC=3)=CC=C1N=C2 SFMJNHNUOVADRW-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
- H01B13/0285—Pretreatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
- H01B3/305—Polyamides or polyesteramides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
- H01B3/306—Polyimides or polyesterimides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/0009—Details relating to the conductive cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0225—Three or more layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
- H01B7/0283—Disposition of insulation comprising one or more extruded layers of insulation comprising in addition one or more other layers of non-extruded insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Insulated Conductors (AREA)
Abstract
the invention discloses a waterproof winding wire and a manufacturing method thereof, wherein the waterproof winding wire comprises a wire core, an electric insulating layer, a waterproof insulating layer and a nylon synthetic resin layer; the waterproof insulating layer comprises a polyamide waterproof insulating layer and an irradiation crosslinked polyethylene insulating layer; the electric insulating layer, the polyamide waterproof insulating layer, the irradiation crosslinked polyethylene insulating layer and the nylon synthetic resin layer are sequentially arranged on the outer side of the wire core from inside to outside; the electric insulation layer comprises a polyimide film and a polyamide film, and the breakdown resistance of the insulation layer is improved under the condition that the insulation layer is thinned, and the occupation ratio of the winding group in a stator slot of the motor is improved.
Description
Technical Field
the invention relates to the technical field of waterproof winding wires, in particular to a waterproof winding wire and a manufacturing method thereof.
Background
At present, in high-frequency motors, high-voltage motors and motors used on equipment such as submersible pumps and the like, the winding coils of the motors are required to have the characteristics of good water resistance, high frequency resistance and high insulation strength, aiming at the requirement, various water-resistant winding wires are led out in the current market, and the requirements of practical use are met to a certain extent.
Disclosure of Invention
the present invention is directed to a waterproof winding wire and a method for manufacturing the same, which solves the above problems of the related art.
in order to achieve the purpose, the invention provides the following technical scheme:
a waterproof winding wire comprises a wire core, an electric insulating layer, a waterproof insulating layer and a nylon synthetic resin layer; the waterproof insulating layer comprises a polyamide waterproof insulating layer and an irradiation crosslinked polyethylene insulating layer;
The electric insulating layer, the polyamide waterproof insulating layer, the irradiation crosslinked polyethylene insulating layer and the nylon synthetic resin layer are sequentially arranged on the outer side of the wire core from inside to outside;
The electrically insulating layer includes a polyimide film and a polyamide film.
As a further scheme of the invention: the wire core is one of a single-core copper wire, a seven-core copper wire and a nineteen-core copper wire.
as a further scheme of the invention: the diameter value of the single-core copper conductor is 2-4.5mm, and the diameter values of the seven-core copper conductor and the nineteen-core copper conductor are both 3-8 mm.
As a further scheme of the invention: the thickness of the electrical insulation layer is 0.2 mm.
As a further scheme of the invention: the thickness of the waterproof insulating layer is 3-6 mm.
As a further scheme of the invention: the thickness of the nylon synthetic resin layer is 0.5 mm.
a method for manufacturing a water-resistant winding wire is characterized by comprising the following steps:
selecting one of a single-core copper conductor with the diameter value of 2-4.5mm, a seven-core copper conductor with the diameter value of 3-8mm and a nineteen-core copper conductor with the diameter value of 3-8mm to obtain a wire core;
wrapping an electric insulation layer on the outer side of the wire core, wherein the electric insulation layer comprises a polyimide film and a polyamide film, wrapping the polyimide film on the outer side wall of the wire core, and then wrapping the polyamide film on the outer side wall of the polyimide film;
Step three, wrapping a waterproof insulating layer on the outer side wall of the electric insulating layer, wherein the waterproof insulating layer comprises a polyamide waterproof insulating layer and an irradiation crosslinking polyethylene insulating layer, wrapping the polyamide waterproof insulating layer on the outer side wall of the polyamide film, and coating the radiation crosslinking polyethylene main insulating layer on the outer side wall of the polyamide waterproof insulating layer in a hot melting state by adopting a co-melting co-extrusion blow molding process;
And step four, wrapping the nylon synthetic resin layer on the outer side wall of the irradiation crosslinking polyethylene insulating layer to obtain the waterproof winding set.
As a further scheme of the invention: in the first step, if the wire core is selected from one of a seven-core copper wire with a diameter value of 3-8mm and a nineteen-core copper wire with a diameter value of 3-8mm, the wire core is prepared by the following steps:
Selecting copper wires with the same specification, loading the copper wires into a wire coil, and enabling the copper wires to be kept at a horizontal position all the time through a back-twist mechanism;
Twisting two adjacent layers of copper wires in opposite twisting directions to obtain a preformed wire core;
and placing the preformed wire core on a doubling die, and carrying out sizing forming treatment on the preformed wire core to obtain the required wire core.
as a further scheme of the invention: after the step, the obtained wire core is subjected to dust removal treatment, and the method specifically comprises the following steps:
Straightening the wire core and slightly vibrating, removing residual particle dust stains on the surface of the wire core in a vibrating mode, and vibrating and loosening stains attached to the surface of the wire core;
Wrapping the outer circumferential side wall of the wire core with soft cleaning cotton cloth, and enabling the soft cleaning cotton cloth to move along the axial direction of the wire core at the speed of m/s;
The air speed of the air outlet is controlled to be 10m/s by the working of the fan, the air outlet of the fan faces the wire core, the fan moves along the circumferential outer side wall of the wire core at the speed of 1.6m/s, and the vibration loose stains on the surface of the wire core are cleaned.
compared with the prior art, the invention has the beneficial effects that
The water-resistant insulating layer comprises a polyamide water-resistant insulating layer and an irradiation cross-linked polyethylene insulating layer, the polyamide water-resistant insulating layer is water-like and can prevent the insulating layer from aging caused by the interaction of water and alternating current, particularly, the conducting wires are generally copper wires, copper ions have active oxidation catalysis on polyethylene, therefore, the water imitation layer can also prevent metal ions from contacting with polyethylene, not only can prevent water, but also has better insulating property, even if the second layer, namely the irradiation cross-linked polyethylene insulation layer, has problems, the polyethylene can also play an insulation role, and the polyethylene has the most outstanding advantages of good insulation performance, thinner insulation layer, the performance of the insulating layer is even improved under the condition that the insulating layer is thinned, and meanwhile, the winding wire embedded in the stator slot of the motor is composed of copper and insulation attached to the copper, and when the insulating layer on the outer portion of the copper is thinned, the occupation ratio of the copper in the stator slot is increased.
secondly, if a wire core is prepared by one of a seven-core copper wire with the diameter value of 3-8mm and a nineteen-core copper wire with the diameter value of 3-8mm, copper wires with the same specification are selected and loaded into a wire coil, and the copper wires are always kept at a horizontal position by a back-twisting mechanism so as to ensure that each copper wire is not twisted by self-twisting deformation in the twisting process; twisting two adjacent layers of copper wires in opposite twisting directions to obtain a preformed wire core, wherein the outermost layer of the bare twisted wire is specified to be in the right direction (Z shape) no matter the twisting direction of the bare twisted wire is concentric twisting or complex twisting; the outermost layer of the insulated conductor is in a left direction (S shape), and the twisting directions of two adjacent layers are opposite no matter in the right direction or the left direction, so that the product is uniform, the connection is convenient, and the single wires are prevented from being loosened; and placing the preformed wire core on a doubling die, so that the preformed wire core is subjected to sizing forming treatment to obtain a required wire core, and the twisted copper wire can obtain the wire core.
Straightening the wire core and slightly vibrating after the wire core is selected, removing residual particle dust stains on the surface of the wire core in a vibrating mode, and vibrating and loosening stains attached to the surface of the wire core; wrapping the outer circumferential side wall of the wire core with soft cleaning cotton cloth, and enabling the soft cleaning cotton cloth to move along the axial direction of the wire core at the speed of 1 m/s; the wind speed of the wind outlet is controlled to be 10m/s by the working of the fan, the wind outlet of the fan faces the wire core, the fan moves along the circumferential outer side wall of the wire core at the speed of 1.6m/s, vibration loose stains on the surface of the wire core are cleaned, and therefore the stains on the wire core are cleaned after the wire core is selected, and the purity of the prepared waterproof winding wire is well guaranteed.
The waterproof winding wire improves the breakdown resistance of the insulating layer under the condition that the insulating layer is thinned, and simultaneously improves the occupation ratio of the winding group in a stator slot of the motor.
Drawings
FIG. 1 is a schematic view of a water-resistant winding wire;
In the figure: 1. a wire core; 2. an electrically insulating layer; 3. a water-resistant insulating layer; 4. a nylon synthetic resin layer; 5. a polyamide water-resistant insulating layer; 6. and irradiating the crosslinked polyethylene insulating layer.
Detailed Description
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to FIG. 1
example one
A waterproof winding wire comprises a wire core 1, an electric insulating layer 2, a waterproof insulating layer 3 and a nylon synthetic resin layer 4; the waterproof insulating layer 3 comprises a polyamide waterproof insulating layer 5 and an irradiation crosslinked polyethylene insulating layer 6;
the electric insulating layer 2, the polyamide waterproof insulating layer 5, the irradiation crosslinked polyethylene insulating layer 6 and the nylon synthetic resin layer 4 are sequentially arranged on the outer side of the wire core 1 from inside to outside;
The electrical insulation layer 2 includes a polyimide film and a polyamide film.
The wire core 1 is one of a single-core copper wire, a seven-core copper wire and a nineteen-core copper wire.
the diameter value of the single-core copper conductor is 3mm, and the diameter values of the seven-core copper conductor and the nineteen-core copper conductor are both 3 mm.
The thickness of the electrically insulating barrier 2 is 0.2 mm.
The thickness of the water-resistant insulating layer 3 was 3 mm.
The thickness of the nylon synthetic resin layer 4 was 0.5 mm.
A method for manufacturing a water-resistant winding wire comprises the following steps:
Selecting one of a single-core copper conductor with the diameter value of 3mm, a seven-core copper conductor with the diameter value of 3mm and a nineteen-core copper conductor with the diameter value of 3mm to obtain a wire core 1;
Secondly, wrapping an electric insulation layer 2 on the outer side of the wire core 1, wherein the electric insulation layer 2 comprises a polyimide film and a polyamide film, wrapping the polyimide film on the outer side wall of the wire core 1, and then wrapping the polyamide film on the outer side wall of the polyimide film;
Step three, wrapping the outer side wall of the electric insulation layer 2 with a waterproof insulation layer 3, wherein the waterproof insulation layer 3 comprises a polyamide waterproof insulation layer 5 and an irradiation crosslinking polyethylene insulation layer 6, wrapping the polyamide waterproof insulation layer 5 on the outer side wall of the polyamide film, and wrapping the main insulation layer of the irradiation crosslinking polyethylene on the outer side wall of the polyamide waterproof insulation layer 5 in a hot-melt state by adopting a co-melting co-extrusion blow molding process for the irradiation crosslinking polyethylene insulation layer 6;
And step four, wrapping the nylon synthetic resin layer 4 on the outer side wall of the irradiation crosslinking polyethylene insulating layer 6 to obtain the waterproof winding set.
In the first step, if the wire core 1 is selected from one of a seven-core copper wire with a diameter value of 3mm and a nineteen-core copper wire with a diameter value of 3mm, the preparation steps of the wire core 1 are as follows:
selecting copper wires with the same specification, loading the copper wires into a wire coil, and enabling the copper wires to be kept at a horizontal position all the time through a back-twisting mechanism so as to ensure that each copper wire is not twisted by self-twisting deformation in the twisting process;
Twisting two adjacent layers of copper wires in opposite twisting directions to obtain a preformed wire core, wherein the outermost layer of the bare stranded wire in the twisting direction is specified to be right (Z-shaped); the twisted outermost layer of the insulated conductor is left-handed (S-shaped). The twisting directions of two adjacent layers are opposite no matter in the right direction or the left direction, so that the product is uniform, the connection is convenient, and the single wires are prevented from being loosened;
the preformed wire core is placed on a doubling die, the preformed wire core is subjected to sizing forming treatment to obtain the required wire core 1, the doubling die generally comprises two semicircles, the inner hole of the steel die is plated with chrome, and the steel die can also be made by hardwood.
after the step 1, performing dust removal treatment on the obtained wire core 1, and specifically comprising the following steps:
straightening the wire core 1 and slightly vibrating, removing residual particle dust stains on the surface of the wire core 1 in a vibrating mode, and vibrating and loosening stains attached to the surface of the wire core 1;
wrapping the outer circumferential side wall of the wire core 1 with soft cleaning cotton cloth, and enabling the soft cleaning cotton cloth to move along the axial direction of the wire core 1 at the speed of 1 m/s;
the air speed of the air outlet is controlled to be 10m/s by the working of the fan, the air outlet of the fan faces the wire core 1, the fan moves along the circumferential outer side wall of the wire core 1 at the speed of 1.6m/s, and the vibration loose stains on the surface of the wire core 1 are cleaned.
the working principle of the invention is as follows: selecting a wire core 1, if the wire core 1 is selected from one of a seven-core copper wire with the diameter value of 3mm and a nineteen-core copper wire with the diameter value of 3mm, selecting copper wires with the same specification, loading the copper wires into a wire coil, enabling the copper wires to be always kept at a horizontal position through a back-twist mechanism, enabling two adjacent layers of copper wires to be twisted in opposite twisting directions to obtain a preformed wire core, placing the preformed wire core on a doubling die, and enabling the preformed wire core to be subjected to sizing forming treatment to obtain the required wire core 1.
Straightening the wire core 1 and slightly vibrating, removing residual particle dust stains on the surface of the wire core 1 in a vibrating mode, vibrating and loosening stains attached to the surface of the wire core 1, wrapping the outer circumferential side wall of the wire core 1 with soft cleaning cotton cloth, enabling the soft cleaning cotton cloth to move along the axial direction of the wire core 1 at the speed of 1m/s, controlling the air speed of an air outlet to be 10m/s by working of a fan, enabling the air outlet of the fan to face the wire core 1, enabling the fan to move along the outer circumferential side wall of the wire core 1 at the speed of 1.6m/s, and cleaning the surface of the wire core 1 to vibrate and loosen the stains, so that the purpose of removing the stains on the wire core 1 is achieved, and the purity.
The following are the specific steps for preparing the water-resistant winding wire:
selecting one of a single-core copper conductor with the diameter value of 3mm, a seven-core copper conductor with the diameter value of 3mm and a nineteen-core copper conductor with the diameter value of 3mm to obtain a wire core 1;
wrapping an electric insulation layer 2 on the outer side of a wire core 1, wherein the electric insulation layer 2 comprises a polyimide film and a polyamide film, wrapping the polyimide film on the outer side wall of the wire core 1, and then wrapping the polyamide film on the outer side wall of the polyimide film;
The outer side wall of the electric insulation layer 2 is wrapped with a waterproof insulation layer 3, the waterproof insulation layer 3 comprises a polyamide waterproof insulation layer 5 and an irradiation crosslinking polyethylene insulation layer 6, the outer side wall of the polyamide film is wrapped with the polyamide waterproof insulation layer 5, the irradiation crosslinking polyethylene insulation layer 6 adopts a co-melting co-extrusion blow molding process, and a ray irradiation crosslinking polyethylene main insulation layer is wrapped on the outer side wall of the polyamide waterproof insulation layer 5 in a hot melting state;
And (3) wrapping the nylon synthetic resin layer 4 on the outer side wall of the irradiation crosslinking polyethylene insulating layer 6 to obtain the waterproof winding set.
example two
A waterproof winding wire comprises a wire core 1, an electric insulating layer 2, a waterproof insulating layer 3 and a nylon synthetic resin layer 4; the waterproof insulating layer 3 comprises a polyamide waterproof insulating layer 5 and an irradiation crosslinked polyethylene insulating layer 6;
the electric insulating layer 2, the polyamide waterproof insulating layer 5, the irradiation crosslinked polyethylene insulating layer 6 and the nylon synthetic resin layer 4 are sequentially arranged on the outer side of the wire core 1 from inside to outside;
the electrical insulation layer 2 includes a polyimide film and a polyamide film.
The wire core 1 is one of a single-core copper wire, a seven-core copper wire and a nineteen-core copper wire.
the diameter value of the single-core copper conductor is 3mm, and the diameter values of the seven-core copper conductor and the nineteen-core copper conductor are both 3 mm.
the thickness of the electrically insulating barrier 2 is 0.2 mm.
the thickness of the water-resistant insulating layer 3 is 5 mm.
the thickness of the nylon synthetic resin layer 4 was 0.5 mm.
A method for manufacturing a water-resistant winding wire comprises the following steps:
selecting one of a single-core copper conductor with the diameter value of 3mm, a seven-core copper conductor with the diameter value of 3mm and a nineteen-core copper conductor with the diameter value of 3mm to obtain a wire core 1;
Secondly, wrapping an electric insulation layer 2 on the outer side of the wire core 1, wherein the electric insulation layer 2 comprises a polyimide film and a polyamide film, wrapping the polyimide film on the outer side wall of the wire core 1, and then wrapping the polyamide film on the outer side wall of the polyimide film;
step three, wrapping the outer side wall of the electric insulation layer 2 with a waterproof insulation layer 3, wherein the waterproof insulation layer 3 comprises a polyamide waterproof insulation layer 5 and an irradiation crosslinking polyethylene insulation layer 6, wrapping the polyamide waterproof insulation layer 5 on the outer side wall of the polyamide film, and wrapping the main insulation layer of the irradiation crosslinking polyethylene on the outer side wall of the polyamide waterproof insulation layer 5 in a hot-melt state by adopting a co-melting co-extrusion blow molding process for the irradiation crosslinking polyethylene insulation layer 6;
And step four, wrapping the nylon synthetic resin layer 4 on the outer side wall of the irradiation crosslinking polyethylene insulating layer 6 to obtain the waterproof winding set.
In the first step, if the wire core 1 is selected from one of a seven-core copper wire with a diameter value of 3mm and a nineteen-core copper wire with a diameter value of 3mm, the preparation steps of the wire core 1 are as follows:
selecting copper wires with the same specification, loading the copper wires into a wire coil, and enabling the copper wires to be kept at a horizontal position all the time through a back-twisting mechanism so as to ensure that each copper wire is not twisted by self-twisting deformation in the twisting process;
Twisting two adjacent layers of copper wires in opposite twisting directions to obtain a preformed wire core, wherein the outermost layer of the bare stranded wire in the twisting direction is specified to be right (Z-shaped); the twisted outermost layer of the insulated conductor is left-handed (S-shaped). The twisting directions of two adjacent layers are opposite no matter in the right direction or the left direction, so that the product is uniform, the connection is convenient, and the single wires are prevented from being loosened;
The preformed wire core is placed on a doubling die, the preformed wire core is subjected to sizing forming treatment to obtain the required wire core 1, the doubling die generally comprises two semicircles, the inner hole of the steel die is plated with chrome, and the steel die can also be made by hardwood.
After the step 1, performing dust removal treatment on the obtained wire core 1, and specifically comprising the following steps:
Straightening the wire core 1 and slightly vibrating, removing residual particle dust stains on the surface of the wire core 1 in a vibrating mode, and vibrating and loosening stains attached to the surface of the wire core 1;
wrapping the outer circumferential side wall of the wire core 1 with soft cleaning cotton cloth, and enabling the soft cleaning cotton cloth to move along the axial direction of the wire core 1 at the speed of 1 m/s;
The air speed of the air outlet is controlled to be 10m/s by the working of the fan, the air outlet of the fan faces the wire core 1, the fan moves along the circumferential outer side wall of the wire core 1 at the speed of 1.6m/s, and the vibration loose stains on the surface of the wire core 1 are cleaned.
The working principle of the invention is as follows: selecting a wire core 1, if the wire core 1 is selected from one of a seven-core copper wire with the diameter value of 3mm and a nineteen-core copper wire with the diameter value of 3mm, selecting copper wires with the same specification, loading the copper wires into a wire coil, enabling the copper wires to be always kept at a horizontal position through a back-twist mechanism, enabling two adjacent layers of copper wires to be twisted in opposite twisting directions to obtain a preformed wire core, placing the preformed wire core on a doubling die, and enabling the preformed wire core to be subjected to sizing forming treatment to obtain the required wire core 1.
Straightening the wire core 1 and slightly vibrating, removing residual particle dust stains on the surface of the wire core 1 in a vibrating mode, vibrating and loosening stains attached to the surface of the wire core 1, wrapping the outer circumferential side wall of the wire core 1 with soft cleaning cotton cloth, enabling the soft cleaning cotton cloth to move along the axial direction of the wire core 1 at the speed of 1m/s, controlling the air speed of an air outlet to be 10m/s by working of a fan, enabling the air outlet of the fan to face the wire core 1, enabling the fan to move along the outer circumferential side wall of the wire core 1 at the speed of 1.6m/s, and cleaning the surface of the wire core 1 to vibrate and loosen the stains, so that the purpose of removing the stains on the wire core 1 is achieved, and the purity.
The following are the specific steps for preparing the water-resistant winding wire:
selecting one of a single-core copper conductor with the diameter value of 3mm, a seven-core copper conductor with the diameter value of 3mm and a nineteen-core copper conductor with the diameter value of 3mm to obtain a wire core 1;
Wrapping an electric insulation layer 2 on the outer side of a wire core 1, wherein the electric insulation layer 2 comprises a polyimide film and a polyamide film, wrapping the polyimide film on the outer side wall of the wire core 1, and then wrapping the polyamide film on the outer side wall of the polyimide film;
The outer side wall of the electric insulation layer 2 is wrapped with a waterproof insulation layer 3, the waterproof insulation layer 3 comprises a polyamide waterproof insulation layer 5 and an irradiation crosslinking polyethylene insulation layer 6, the outer side wall of the polyamide film is wrapped with the polyamide waterproof insulation layer 5, the irradiation crosslinking polyethylene insulation layer 6 adopts a co-melting co-extrusion blow molding process, and a ray irradiation crosslinking polyethylene main insulation layer is wrapped on the outer side wall of the polyamide waterproof insulation layer 5 in a hot melting state;
And (3) wrapping the nylon synthetic resin layer 4 on the outer side wall of the irradiation crosslinking polyethylene insulating layer 6 to obtain the waterproof winding set.
comparative example 1
a water-proof winding wire comprises a wire core, a water-proof insulating layer and a nylon synthetic resin layer, wherein the water-proof winding wire is in a structure, a single-core cylindrical red copper wire or a cylindrical red copper wire formed by twisting seven cores and nineteen cores is arranged in the middle of the water-proof winding wire, a circular polyethylene water-proof insulating layer is tightly sleeved outside the water-proof winding wire, the nylon synthetic resin layer is arranged on the outermost layer, and the thickness value of the water-proof insulating layer is 7 mm.
The following table shows the test performance of the water-resistant insulating layers of examples one and two at thicknesses of 3mm and 5mm, respectively, and comparative example one
| Breakdown voltage (kv) | experiment time(s) | |
| example one | 21 | 14 |
| Example two | 27.5 | 17 |
| comparative example 1 | 14 | 6 |
although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (9)
1. The waterproof winding wire is characterized by comprising a wire core (1), an electric insulating layer (2), a waterproof insulating layer (3) and a nylon synthetic resin layer (4); the waterproof insulating layer (3) comprises a polyamide waterproof insulating layer (5) and a radiation cross-linked polyethylene insulating layer (6);
the electric insulation layer (2), the polyamide waterproof insulation layer (5), the irradiation crosslinked polyethylene insulation layer (6) and the nylon synthetic resin layer (4) are sequentially arranged on the outer side of the wire core (1) from inside to outside;
the electrical insulation layer (2) comprises a polyimide film and a polyamide film.
2. The water-resistant winding wire according to claim 1, wherein the wire core (1) is one of a single-core copper wire, a seven-core copper wire and a nineteen-core copper wire.
3. The water-resistant winding wire according to claim 2, wherein the diameter value of the single-core copper wire is 2-4.5mm, and the diameter values of the seven-core copper wire and the nineteen-core copper wire are 3-8 mm.
4. A water resistant winding wire according to claim 1, characterized in that the thickness of the electrically insulating layer (2) is 0.2 mm.
5. A water-resistant winding wire according to claim 1, wherein the thickness of the water-resistant insulating layer (3) is 3-6 mm.
6. a water-resistant winding wire according to claim 1, wherein the nylon synthetic resin layer (4) has a thickness of 0.5 mm.
7. A method for manufacturing a water-resistant winding wire is characterized by comprising the following steps:
Selecting one of a single-core copper conductor with the diameter value of 2-4.5mm, a seven-core copper conductor with the diameter value of 3-8mm and a nineteen-core copper conductor with the diameter value of 3-8mm to obtain a wire core (1);
secondly, wrapping an electric insulation layer (2) on the outer side of the wire core (1), wherein the electric insulation layer (2) comprises a polyimide film and a polyamide film, wrapping the polyimide film on the outer side wall of the wire core (1), and then wrapping the polyamide film on the outer side wall of the polyimide film;
step three, wrapping the outer side wall of the electric insulating layer (2) with a waterproof insulating layer (3), wherein the waterproof insulating layer (3) comprises a polyamide waterproof insulating layer (5) and an irradiation crosslinking polyethylene insulating layer (6), wrapping the polyamide waterproof insulating layer (5) on the outer side wall of the polyamide film, and coating the irradiation crosslinking polyethylene insulating layer (6) on the outer side wall of the polyamide waterproof insulating layer (5) in a hot-melt state by adopting a co-melting co-extrusion blow molding process;
And step four, wrapping the nylon synthetic resin layer (4) on the outer side wall of the irradiation crosslinking polyethylene insulating layer (6) to obtain the waterproof winding set.
8. The method of claim 7, wherein in the step one, if the core (1) is selected from one of a seven-core copper wire having a diameter value of 3-8mm and a nineteen-core copper wire having a diameter value of 3-8mm, the core (1) is prepared by the steps of:
selecting copper wires with the same specification, loading the copper wires into a wire coil, and enabling the copper wires to be kept at a horizontal position all the time through a back-twist mechanism;
twisting two adjacent layers of copper wires in opposite twisting directions to obtain a preformed wire core;
And placing the preformed wire core on a doubling die, and carrying out sizing forming treatment on the preformed wire core to obtain the required wire core (1).
9. The manufacturing method of the water-resistant winding wire according to claim 7, characterized in that after the first step, the obtained wire core (1) is subjected to dust removal treatment, and the specific steps are as follows:
straightening the wire core (1), slightly vibrating, removing residual particle dust stains on the surface of the wire core (1) in a vibrating mode, and vibrating and loosening stains attached to the surface of the wire core (1);
wrapping the outer circumferential side wall of the wire core (1) with soft cleaning cotton cloth, and enabling the soft cleaning cotton cloth to move along the axial direction of the wire core (1) at the speed of 1 m/s;
the air speed of the air outlet is controlled to be 10m/s by the working of the fan, the air outlet of the fan faces the wire core 1, the fan moves along the circumferential outer side wall of the wire core (1) at the speed of 1.6m/s, and the vibration loose stains on the surface of the wire core (1) are cleaned.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910943200.3A CN110580975A (en) | 2019-09-30 | 2019-09-30 | water-resistant winding wire and manufacturing method thereof |
| ZA2020/03497A ZA202003497B (en) | 2019-09-30 | 2020-06-11 | Water-resistant winding wire and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910943200.3A CN110580975A (en) | 2019-09-30 | 2019-09-30 | water-resistant winding wire and manufacturing method thereof |
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| CN110580975A true CN110580975A (en) | 2019-12-17 |
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| CN201910943200.3A Pending CN110580975A (en) | 2019-09-30 | 2019-09-30 | water-resistant winding wire and manufacturing method thereof |
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| ZA (1) | ZA202003497B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116168883A (en) * | 2023-04-23 | 2023-05-26 | 河北国潜线缆有限责任公司 | Multilayer film-coated waterproof winding wire and preparation method thereof |
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| ZA202003497B (en) | 2021-06-30 |
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