CN212675947U - Composite film sintered lead for wind driven generator coil - Google Patents
Composite film sintered lead for wind driven generator coil Download PDFInfo
- Publication number
- CN212675947U CN212675947U CN202021871480.6U CN202021871480U CN212675947U CN 212675947 U CN212675947 U CN 212675947U CN 202021871480 U CN202021871480 U CN 202021871480U CN 212675947 U CN212675947 U CN 212675947U
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- composite film
- corona
- fluorine
- wire
- layer
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- 239000002131 composite material Substances 0.000 title claims abstract description 44
- 239000003365 glass fiber Substances 0.000 claims abstract description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052802 copper Inorganic materials 0.000 claims abstract description 22
- 239000010949 copper Substances 0.000 claims abstract description 22
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 22
- 239000011737 fluorine Substances 0.000 claims abstract description 22
- 238000004804 winding Methods 0.000 claims abstract description 19
- 239000002966 varnish Substances 0.000 claims abstract description 14
- 238000005245 sintering Methods 0.000 claims abstract description 10
- 239000000853 adhesive Substances 0.000 claims abstract description 8
- 230000015556 catabolic process Effects 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 2
- 239000003973 paint Substances 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000007598 dipping method Methods 0.000 abstract 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 6
- 239000003292 glue Substances 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004812 Fluorinated ethylene propylene Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920009441 perflouroethylene propylene Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The utility model discloses a aerogenerator is composite film sintering wire for coil belongs to electromagnetism around the covering field. The wire comprises a copper flat wire, a corona-resistant polyimide-fluorine 46 composite film and a double-glass-fiber layer in sequence from inside to outside, the composite film is wrapped outside the copper flat wire in a half overlapping mode, a layer of impregnating varnish is arranged outside the composite film layer, the double-glass-fiber layer comprises two layers of glass fibers with opposite winding directions, the two layers of glass fibers are wound outside the corona-resistant polyimide-fluorine 46 composite film after the impregnating varnish is wrapped in a spiral mode at intervals in an alternating mode, and a circle of high-temperature-resistant self-adhesive paint is coated outside the double-glass-fiber layer through dipping. The utility model discloses withstand voltage is high, and corona resistance, environmental corrosion resistance, performance such as moisture resistance are excellent, and coiling becomes coil mechanical strength height, and anti short circuit impact capacity is strong, is applicable to the winding and the coil of various big or middle-sized interchange, direct current motor and high temperature resistant circuit, has higher mechanical properties, overload capacity and wet and heat resistance characteristic.
Description
Technical Field
The utility model relates to an electromagnetism is around the covering wire, concretely relates to aerogenerator is composite film sintering wire for coil.
Background
At present, polyimide composite film wires serving as important raw materials of stator winding coils of high-voltage motors have the temperature resistance grade of F grade, can resist the high temperature of 155 ℃, have the withstand voltage standard of more than or equal to 2.5KV, and have the characteristics of high temperature and high pressure resistance, high electric strength resistance, stable electrical insulation and the like, so the polyimide composite film wires are widely applied to many fields. The publication number is CN209216609U, the publication date is 2019, 08.06.3, and the name is "glass fiber wrapped F46 polyester imide film sintering line", and a Chinese utility model granted patent discloses a glass fiber wrapped F46 polyester imide film sintering line, which comprises a conductor of a lead, a first layer coated with F46 glue polyester imide film wrapping layer, and a second layer coated with F46 glue polyester imide film wrapping layer; the wrapping direction of the film is opposite to that of the first layer of the wrapping layer coated with the F46 adhesive polyester imide film; a first glass fiber winding layer is arranged outside the second polyester imide film winding layer coated with F46 glue, and insulating paint is coated on the first glass fiber winding layer; then, a second layer of glass fiber winding layer is arranged, the winding direction of the second layer of glass fiber winding layer is opposite to that of the first layer of glass fiber winding layer, and insulating paint is coated on the second layer of glass fiber winding layer.
The quality of the product in the aspect of oil resistance and voltage strength is improved in the patent, however, along with the development of the electrical industry of the motor, the coils of the wind driven generators at home and abroad are continuously towards high output power, the structure development as small as possible is realized, increasingly harsh technical requirements are provided for the winding wire of the stator component of the motor, the requirement of further reducing the thickness of an insulating layer and higher breakdown voltage strength of the winding wire is required, the excellent corona resistance service life is prolonged, the mechanical strength and other properties are realized, and the electrical insulation level and the service life of the motor are improved.
Disclosure of Invention
The utility model discloses aim at solving the above-mentioned problem that exists among the prior art, provide a withstand voltage corona, it is high to wind into mechanical strength behind the coil, the strong composite film sintering wire for aerogenerator coil of anti short circuit impact ability.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
the composite film sintering lead for the wind driven generator coil is characterized in that: the lead sequentially comprises a copper flat wire, a corona-resistant polyimide-fluorine 46 composite film and a double glass fiber layer from inside to outside, the copper flat wire is an oxygen-free copper flat wire with the polished purity of 99.9%, the corona-resistant polyimide-fluorine 46 composite film is wrapped outside the copper flat wire in a one-half overlapping mode, and a layer of impregnating varnish is coated outside the composite film; the double glass fiber layers comprise two layers of glass fibers in opposite winding directions, the two layers of glass fibers are alternately wound on the outer side of the corona-resistant polyimide-fluorine 46 composite film wrapped with impregnating varnish at intervals in a spiral mode, and the two layers of glass fiber layers are sequentially coated with one layer of impregnating varnish and one layer of high-temperature-resistant self-adhesive varnish.
The lapping angle of the two layers of glass fibers on the corona-resistant polyimide-fluorine 46 composite film is 45 degrees +/-10 degrees.
The overlapping rate of the corona-resistant polyimide-fluorine 46 composite film is 50-60%.
The width of the copper flat wire is 2.00-16.00 mm, and the narrow side of the copper flat wire is 0.80-5.60 mm.
The thickness of the corona-resistant polyimide-fluorine 46 composite film is 0.02-0.025 mm, the peel strength is more than or equal to 7.8N/cm, and the breakdown voltage is more than or equal to 5 kV.
The utility model has the advantages that:
1. the composite film sintered wire adopts half of corona-resistant polyimide-fluorine 46 composite film to be overlapped and wrapped outside the copper flat wire, the wrapping rate is 50% -60%, and the wrapping structure can ensure that the film layer has better sealing performance and stable voltage resistance value and can also improve the corona resistance of the wire on the premise of ensuring the uniform outer diameter of the wire;
2. in the utility model, the double glass fiber layers are wrapped after the composite film layer is dipped, the wrapping angle is 45 +/-10 degrees, so that the composite film is more conformable and stable in structure on the copper flat wire, and the insulativity, the heat resistance and the corrosion resistance of the lead are improved;
3. in the utility model, the outermost layer of the sintered wire is coated with high-temperature self-adhesive paint, and a plurality of sintered wires with self-adhesive paint layers can form a whole after transposition and heat treatment, thereby effectively improving the tensile strength of the wire;
4. sintering wire has excellent properties such as withstand voltage, corona resistance, environmental corrosion resistance, moisture resistance, and mechanical strength is high after making the coil around, and anti short circuit impact ability is strong, has higher mechanical properties, overload capacity and moisture-proof heat characteristic, is applicable to the winding and the coil of all kinds of big or medium-sized interchange, DC motor and high temperature resistant circuit.
Drawings
FIG. 1 is a schematic structural view of a sintered wire;
wherein,
1. the corona-resistant polyimide-fluorine 46 composite film comprises a copper flat wire, 2, a corona-resistant polyimide-fluorine 46 composite film, 3, a double glass fiber layer, 4 and a self-adhesive paint layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "vertical", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model is usually placed when using, or the orientation or positional relationship that a person skilled in the art usually understands, only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides a composite film sintered conductor for a wind driven generator coil, which sequentially comprises a copper flat wire, a corona-resistant polyimide-fluorine 46 composite film, an impregnating paint layer and a double glass fiber layer from inside to outside, wherein the copper flat wire is an oxygen-free copper flat wire with the purity of 99.9%, and the copper flat wire needs to be polished by a polishing machine in order to enable the composite film layer to have good adhesiveness. The polyimide-fluorine 46 composite film layer is formed by coating fluorinated ethylene propylene resin on two sides of a corona-resistant polyimide film and sintering at high temperature, the corona-resistant polyimide-fluorine 46 composite film is wrapped outside a copper flat wire in a half overlapping mode, the wrapping rate of the film is 50% -60%, and the wrapping of the structure can enable the film layer to be better in sealing performance, stable in voltage resistance value and improved in insulating performance on the premise that the outer diameter size of a wire is uniform.
After the composite film is wrapped, the wire needs to be subjected to high-frequency sintering at 250-270 ℃, baking in an oven, then a layer of impregnating varnish is coated, two layers of glass filaments are wrapped outside the impregnating varnish layer, the two layers of glass filaments are spirally wound on the outer side of the corona-resistant polyimide-fluorine 46 composite film at intervals in a positive and negative winding direction, the wrapping angle is 45 +/-10 degrees, and the 45-degree wrapping angle is most stable and is properly adjusted according to the specification and size of the wire. And after the double glass fiber layers are wrapped, baking and drying impregnating varnish, coating a layer of high-temperature-resistant self-adhesive varnish, and winding a coil after baking and drying. The sintered wire has high voltage resistance, high mechanical strength after being wound into a coil, strong short circuit impact resistance, excellent corona resistance, environmental corrosion resistance, moisture resistance and other properties, has higher mechanical properties, overload capacity and damp-heat resistance, and is suitable for windings and coils of various large and medium-sized alternating current and direct current motors and high-temperature resistant circuits.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (5)
1. The composite film sintering lead for the wind driven generator coil is characterized in that: the conducting wire sequentially comprises a copper flat wire (1), a corona-resistant polyimide-fluorine 46 composite film (2) and a double glass fiber layer (3) from inside to outside, the copper flat wire (1) is an oxygen-free copper flat wire (1) with the polishing purity of 99.9 percent, the corona-resistant polyimide-fluorine 46 composite film (2) is wrapped outside the copper flat wire (1) in a half-overlapping mode, and a layer of impregnating varnish is coated outside the corona-resistant polyimide-fluorine 46 composite film (2); the double glass fiber layer (3) comprises two layers of glass fibers in opposite winding directions, the two layers of glass fibers are alternately wound on the outer side of the corona-resistant polyimide-fluorine 46 composite film (2) wrapped with impregnating varnish at intervals in a spiral mode, and the impregnating varnish layer and the high-temperature-resistant self-adhesive varnish layer are sequentially coated outside the double glass fiber layer (3).
2. The composite film sintered wire for wind turbine coil according to claim 1, characterized in that: the lapping angle of the two layers of glass fibers on the corona-resistant polyimide-fluorine 46 composite film is 45 degrees +/-10 degrees.
3. The composite film sintered wire for wind turbine coil according to claim 1, characterized in that: the overlapping rate of the corona-resistant polyimide-fluorine 46 composite film (2) is 50% -60%.
4. The composite film sintered wire for wind turbine coil according to claim 1, characterized in that: the width of the copper flat wire (1) is 2.00-16.00 mm, and the narrow side of the copper flat wire is 0.80-5.60 mm.
5. The composite film sintered wire for wind turbine coil according to claim 1, characterized in that: the thickness of the corona-resistant polyimide-fluorine 46 composite film (2) is 0.02-0.025 mm, the peel strength is not less than 7.8N/cm, and the breakdown voltage is not less than 5 kV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021871480.6U CN212675947U (en) | 2020-09-01 | 2020-09-01 | Composite film sintered lead for wind driven generator coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021871480.6U CN212675947U (en) | 2020-09-01 | 2020-09-01 | Composite film sintered lead for wind driven generator coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212675947U true CN212675947U (en) | 2021-03-09 |
Family
ID=74823837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021871480.6U Active CN212675947U (en) | 2020-09-01 | 2020-09-01 | Composite film sintered lead for wind driven generator coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212675947U (en) |
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2020
- 2020-09-01 CN CN202021871480.6U patent/CN212675947U/en active Active
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