CN109994254B - Winding wire for 10kV motor - Google Patents
Winding wire for 10kV motor Download PDFInfo
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- CN109994254B CN109994254B CN201910297882.5A CN201910297882A CN109994254B CN 109994254 B CN109994254 B CN 109994254B CN 201910297882 A CN201910297882 A CN 201910297882A CN 109994254 B CN109994254 B CN 109994254B
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- 238000004804 winding Methods 0.000 title claims abstract description 28
- 239000010445 mica Substances 0.000 claims abstract description 91
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 91
- 229920006267 polyester film Polymers 0.000 claims abstract description 85
- 239000003973 paint Substances 0.000 claims abstract description 55
- 239000007888 film coating Substances 0.000 claims abstract description 32
- 238000009501 film coating Methods 0.000 claims abstract description 32
- 239000004020 conductor Substances 0.000 claims abstract description 26
- 239000004831 Hot glue Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000010410 layer Substances 0.000 claims description 143
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 27
- 239000010949 copper Substances 0.000 claims description 23
- 229910052802 copper Inorganic materials 0.000 claims description 23
- 238000009413 insulation Methods 0.000 claims description 17
- 239000004962 Polyamide-imide Substances 0.000 claims description 12
- 229920003055 poly(ester-imide) Polymers 0.000 claims description 12
- 229920002312 polyamide-imide Polymers 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 238000010422 painting Methods 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 3
- 239000003365 glass fiber Substances 0.000 description 12
- 238000005253 cladding Methods 0.000 description 7
- 238000007598 dipping method Methods 0.000 description 6
- 229920002799 BoPET Polymers 0.000 description 3
- 239000005041 Mylar™ Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/04—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances mica
-
- 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
- H01B3/42—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 polyesters; polyethers; polyacetals
- H01B3/421—Polyesters
-
- 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
Abstract
The invention relates to a winding wire for a 10kV motor, which comprises a conductor and an insulating layer attached to the conductor, wherein the insulating layer comprises a paint film coating coated on the periphery of the conductor, and a first wrapping layer and a second wrapping layer which are sequentially wrapped outwards by the paint film coating, wherein the first wrapping layer is formed by a polyester film reinforced mica tape, and the second wrapping layer is formed by a polyester film reinforced mica tape coated with B-stage hot melt adhesive; the polyester film reinforced mica tape forming the second wrapping layer is coated with B-stage hot melt adhesive, and can be glued and formed in the baking and pressing process, so that the subsequent processing procedures and the use of materials can be reduced, and the manufacturing cost of the coil is greatly reduced.
Description
Technical Field
The invention belongs to the technical field of special winding wires, and particularly relates to a winding wire product suitable for a 10kV motor.
Background
The insulation resistance of the high-voltage equipment is not lower than 1 megaohm per kilovolt, so that the insulation resistance of the 10KV high-voltage motor is not lower than 10 megaohms, in order to meet the insulation requirement in the prior art, the insulation thickness of an insulation winding wire of the 10KV high-voltage motor is thicker, for example, in the prior art (one): the double-layer mica tape wrapped copper flat wire is wrapped by the paint-dipped glass fiber, namely, the two layers of mica tapes are overlapped in the inner part of the double-layer mica tape, one or two layers of glass fiber are wrapped on the outer layer of the double-layer mica tape, the glass fiber is bonded by paint dipping and drying, the strength of the glass fiber is enhanced, and the insulation thickness is 0.80-0.90 mm; prior art (ii): the double-layer mica tape wrapped copper flat wire is wrapped by the paint-dipped glass fiber, namely, the two layers of mica tapes are wrapped by 1/3 of the inner layer, one or two layers of glass fiber are wrapped by the outer layer, the glass fiber is bonded by paint dipping and drying, the strength of the glass fiber is enhanced, and the insulation thickness is 0.60-0.70 mm; prior art (iii): the paint-dipped glass fiber is wrapped with a layer of mica and a layer of polyimide film to wrap the copper flat wire, namely, the inner 50% of the copper flat wire is wrapped with a layer of polyimide film and a layer of mica tape, the outer layer is wrapped with one or two layers of glass fiber, the paint is dipped and dried to enable the glass fiber to be bonded and strengthen the strength of the glass fiber, and the insulation thickness is 0.60-0.70 mm. In the three prior arts, the insulation thickness is generally above 0.6mm due to the limitation of the insulation structure, which results in low slot filling rate, poor heat dissipation capability, high temperature rise, large occupied space and large volume of the motor; in addition, in the prior art, the insulating outer layer is provided with a relatively closed paint-immersed wire cladding, so that the insulating layer is poor in paint-immersed permeability, and the electrical property of the product after paint immersion is not improved to an ideal degree.
Disclosure of Invention
The invention aims to solve the technical problem of providing a winding wire for a 10kV motor, which is greatly thinned in insulation thickness.
In order to solve the technical problems, the invention adopts a technical scheme that:
the winding wire for the 10kV motor comprises a conductor and an insulating layer attached to the conductor, wherein the insulating layer comprises a paint film coating coated on the periphery of the conductor, a first wrapping layer and a second wrapping layer, the first wrapping layer and the second wrapping layer are sequentially wrapped outwards by the paint film coating, the first wrapping layer is formed by a polyester film reinforced mica tape, and the second wrapping layer is formed by a polyester film reinforced mica tape coated with a B-stage hot melt adhesive layer.
Preferably, the polyester film reinforced mica tape forming the first wrapping layer comprises a first mica tape, a first polyester film and a second polyester film attached to two sides of the first mica tape, wherein the first polyester film is close to the paint film coating, and the second polyester film is close to the second wrapping layer. The first and second polyester films are located on either side of the first mica tape, i.e., to form a double-sided reinforced mica tape.
Preferably, the polyester film reinforced mica tape forming the second wrapping layer comprises a second mica tape, a third polyester film and a fourth polyester film, wherein the third polyester film and the fourth polyester film are attached to two side surfaces of the second mica tape, the third polyester film is relatively close to the first wrapping layer, and the fourth polyester film is relatively far away from the first wrapping layer. The third and fourth polyester films are positioned on two sides of the second mica tape, namely, the mica tape with double-sided reinforcement is formed.
Preferably, the B-stage hot melt adhesive layer is coated on the outer side surface of the fourth polyester film.
Preferably, the paint film coating is a polyester imide paint film coating, or a polyester and polyamide imide composite paint film coating, or a polyester imide and polyamide imide composite paint film coating, or a polyamide imide paint film layer.
Preferably, the cladding ratio of the first cladding layer is 0%, and the cladding ratio of the second cladding layer is 0%.
Preferably, the thickness of the paint film coating is 0.12 mm-0.17 mm.
Preferably, the thickness of the mylar reinforced mica tape that comprises the first wrap is 0.09mm.
Preferably, the thickness of the mylar reinforced mica tape that forms the second wrap is 0.09mm.
Preferably, the conductor is formed by rectangular flat copper wire, four corners of the rectangular flat copper wire are rounded corners, and the thickness of the rectangular flat copper wire is 0.5 mm-6 mm.
Preferably, the width of the rectangular copper flat wire is 2 mm-16 mm, and the fillet radius of the rectangular copper flat wire is 0.5 mm-1.00 mm.
Preferably, the thickness of the insulating layer is 0.45 mm-0.50 mm.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the winding wire redesigns the structures of the conductor and the insulating layer attached to the conductor, wherein the insulating layer consists of a paint film coating, a first wrapping layer and a second wrapping layer, the first wrapping layer and the second wrapping layer are both formed by polyester film reinforced mica tapes, the overall insulating thickness of the insulating layer is reduced by 16% -44% compared with that of the traditional product, the slot filling rate of a coil can be improved, the temperature rise is reduced, and the volume of the motor can be reduced under the same motor power requirement; in addition, the polyester film reinforced mica tape forming the second wrapping layer is coated with a B-stage hot melt adhesive layer, so that painting or padding of a gluing material is not needed in the process of subsequent winding processing and winding into a coil, and the coil can be glued and formed in the baking and pressing process, so that the use of subsequent processing procedures and materials can be reduced, and the manufacturing cost of the coil is greatly reduced.
In addition, the winding of the invention has stable linear performance and excellent electrical performance, 4a and 6b are bent, the breakdown voltage value is more than 6000V, and the winding has a structure with less glue, and after the winding is processed into a coil, the winding can be conveniently impregnated with paint by adopting a VPI vacuum paint dipping mode, so that the electrical performance of the winding is greatly improved, and the winding cannot be broken down up to 20000V.
Drawings
FIG. 1 is a schematic view of the overall structure of a winding wire of the present invention;
FIG. 2 is a schematic view of a specific structure of a first cladding layer according to the present invention;
FIG. 3 is a schematic view of a specific structure of a second cladding layer according to the present invention;
wherein: 10. a conductor; 101. a paint film coating; r1, a first wrapping layer; r10, a first mica base band; r11, a first polyester film; r12, a second polyester film; r2, a second wrapping layer; r20, a second mica base band; r21 a third polyester film; r22, a fourth polyester film, and r23 and a B-stage hot melt adhesive layer.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and the specific embodiments.
As shown in fig. 1, 2 and 3, a winding wire for a 10kV motor comprises a conductor 10 and an insulating layer attached to the conductor 10, wherein the insulating layer comprises a paint film coating 101 coated on the periphery of the conductor 10, a first wrapping layer R1 and a second wrapping layer R2 which are sequentially wrapped outwards by the paint film coating 101, the first wrapping layer R1 is formed by a polyester film reinforced mica tape, and the second wrapping layer R2 is formed by a polyester film reinforced mica tape coated with a B-stage hot melt adhesive layer R23. The total insulation thickness (insulation layer thickness) formed by the first wrapping layer r1 and the second wrapping layer r2 and the paint film coating 101 after wrapping and compressing is 0.45 mm-0.50 mm (the wrapping layer and the coating have compression amount in the manufacturing process).
Specifically, the conductor 10 is constituted by a rectangular flat copper wire which is a continuous warpThe Cu+Ag content of the fully annealed soft copper flat wire is more than or equal to 99.90%, the oxygen content is less than or equal to 0.04%, and the volume resistivity is less than or equal to 0.017241 Ω & mm 2 And the breaking elongation is greater than or equal to 32%, in addition, four corners of the rectangular copper flat wire are rounded corners, the thickness of the rectangular copper flat wire is 0.5 mm-6 mm, the width of the rectangular copper flat wire is 2 mm-16 mm, and the radius of the rounded corners of the rectangular copper flat wire is 0.5 mm-1.00 mm.
The paint film coating 101 may be a polyester imide paint film coating 101, or may also be a polyester and polyamide imide composite paint film coating 101, or may also be a polyester imide and polyamide imide composite paint film coating 101, or may also be a polyamide imide paint film layer. The thickness of the paint film coating 101 is 0.12 mm-0.17 mm. The coating is carried out on the surface of the conductor 10 in a repeated coating and baking mode, the thickness of a paint film formed after each painting is about 0.010-0.020mm, and the uniformity of the thickness of the film layer is ensured by adopting a paint scraping die.
Further, the polyester film reinforced mica tape constituting the first wrapping layer r1 comprises a first mica tape r10, a first polyester film r11 and a second polyester film r12 attached to both sides of the first mica tape r10, wherein the first polyester film r11 is close to the paint film coating 101, and the second polyester film r12 is close to the second wrapping layer r2. The first polyester film r11 had a thickness of 0.006mm and a gram weight of (8.+ -.2) g/mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The second polyester film r12 had a thickness of 0.023mm and a gram weight of (32.+ -. 3) g/mm 2 The first mica tape r10 is calcined mica, and is (75+ -8) g/mm 2 Epoxy resin, forming a first wrapping layer r1 of a polyester film reinforced mica tape with a width of 8mm to 15mm and a nominal thickness of 0.09mm, the reinforced mica tape having a total grammage of (133 + -10) g/mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The first wrapping layer r1 is wrapped in a clockwise or anticlockwise direction, the wrapping rate is 0 percent (namely precision butt seam wrapping), and the gap distance between the edges of the mica tapes is less than or equal to 0.3mm; the first polyester film r11 is inward and the second polyester film r12 is outward when wrapping.
Further, the polyester film reinforced mica tape forming the second wrapping layer r2 comprises a second mica tape r20, a third polyester film r21 and a fourth polyester film r22 attached to two sides of the second mica tape r20, wherein the third polyester film r21 is relatively close to the first wrapping layer r1 and the fourthThe mylar r22 is relatively far from the first wrap r1. The third polyester film r21 had a thickness of 0.006mm and a grammage of (8.+ -.2) g/mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The thickness of the fourth polyester film R22 is 0.023mm, the gram weight is (32+/-3) g/mm2, and the B-stage hot melt adhesive layer R23 is coated on the outer side surface of the fourth polyester film R22. The second mica tape r20 is calcined mica, and is adhered by (75+/-8) g/mm2 epoxy resin, so as to form a polyester film reinforced mica tape of a second wrapping layer r2, the width of the reinforced mica tape is 8mm to 15mm, the nominal thickness of the reinforced mica tape is 0.09mm, and the total gram weight of the reinforced mica tape is (133+/-10) g/mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The wrapping direction of the second wrapping layer r2 is consistent with the wrapping direction of the first wrapping layer r1, the overlapping rate is 0 percent (namely, precision butt-joint wrapping), the wrapping gap distance between the edges of the mica tapes is less than or equal to 0.5mm, and the distance between the wrapping gap of the mica tapes of the second wrapping layer r2 and the wrapping gap of the mica tapes of the first wrapping layer r1 is controlled within the range of 50+/-10 percent of the bandwidth of the mica tapes; the third polyester film r21 is inward and the fourth polyester film r22 is outward during wrapping.
The specific dimensional specifications of the winding wire for the 10kV motor are as follows:
1. and (3) taking a rectangular copper flat wire with a narrow side nominal size of 1.80mm and a wide side nominal size of 4.75mm, coating a polyester imide paint film outside a rectangular copper flat wire conductor 10 with a round corner radius nominal size of 0.65mm, wrapping a double-sided polyester film reinforced mica tape with a nominal thickness of 0.09mm and a nominal width of 8mm at a 0% stacking rate in the middle to form a first wrapping layer r1, wrapping a gap of 0-0.3 mm, and then overlapping a B-stage hot melt adhesive double-sided polyester film reinforced mica tape with a 0% stacking rate outside the first wrapping layer r1 to form a second wrapping layer r2, wherein the nominal thickness of the mica tape is 0.09mm, the nominal width of the mica tape is 8mm, the wrapping gap is 0-0.5 mm, the distance between the first wrapping layer r1 and the second wrapping layer r2 is 3.2-4.8 mm, and the total nominal insulation thickness is 0.50mm.
2. And (3) taking a rectangular copper flat wire with a narrow side nominal size of 2.24mm and a wide side nominal size of 5.00mm, coating a polyester imide and polyamide imide composite paint film outside the rectangular copper flat wire conductor 10 with a round corner radius nominal size of 0.65mm, wherein a double-sided polyester film reinforced mica tape with a nominal thickness of 0.09mm and a nominal width of 10mm is wrapped at a 0% overlapping rate to form a first wrapping layer r1, wrapping gaps of 0-0.3 mm, and then overlapping a B-stage hot melt adhesive double-sided polyester film reinforced mica tape with a 0% overlapping rate outside the first wrapping layer r1 to form a second wrapping layer r2, wherein the mica tape nominal thickness of 0.09mm, the nominal width of 10mm, the wrapping gaps of 0-0.5 mm, the first wrapping layer r1 and the second wrapping layer r2 are wrapped in the same direction, the distance between the mica tape gaps of the first wrapping layer r1 and the second wrapping layer r2 is 4.0-6.0 mm, and the total thickness of 0.50mm.
3. And (3) taking a rectangular copper flat wire with a narrow side nominal size of 3.00mm and a wide side nominal size of 6.30mm, coating a polyester and polyamide imide composite paint film outside a rectangular copper flat wire conductor 10 with a round corner radius nominal size of 0.80mm, wherein the thickness of the rectangular copper flat wire conductor is 0.12-0.17 mm, wrapping a double-sided polyester film reinforced mica tape with a nominal thickness of 0.09mm and a nominal width of 12mm at a 0% stacking rate to form a first wrapping layer r1, wrapping a gap of 0-0.3 mm, and then wrapping a B-stage hot melt adhesive double-sided polyester film reinforced mica tape with a wrapping band with a 0% stacking rate outside the first wrapping layer r1 to form a second wrapping layer r2, wherein the nominal thickness of the mica tape is 0.09mm, the nominal width of the wrapping gap is 0-0.5 mm, the first wrapping layer r1 and the second wrapping layer r2 are wrapped in the same direction, the distance between the mica tape gaps of the first wrapping layer r1 and the second wrapping layer r2 is 4.8-7.2 mm, and the total thickness is 0.50mm.
4. And (3) taking a rectangular copper flat wire with a narrow side nominal size of 2.80mm and a wide side nominal size of 9.00mm, coating a polyamide imide paint film outside a rectangular copper flat wire conductor, wherein the thickness is 0.12-0.17 mm, wrapping a double-sided polyester film reinforced mica tape with a nominal thickness of 0.09mm and a nominal width of 15mm at a 0% stacking rate to form a first wrapping layer r1, wrapping a gap of 0-0.3 mm, and then overlapping a B-stage hot melt adhesive double-sided polyester film reinforced mica tape with a 0% stacking rate outside the first wrapping layer r1 to form a second wrapping layer r2, wherein the nominal thickness of the mica tape is 0.09mm, the nominal width of 15mm and the wrapping gap of 0-0.5 mm, the first wrapping layer r1 and the second wrapping layer r2 are wrapped in the same direction, and the distance between the mica tape gaps of the first wrapping layer r1 and the second wrapping layer r2 is 6.0-9.0 mm, and the total nominal insulation thickness is 0.50mm.
In summary, the winding wire of the invention redesigns the structures of the conductor and the insulating layer attached to the conductor, wherein the insulating layer consists of a paint film coating, a first wrapping layer and a second wrapping layer, the first wrapping layer and the second wrapping layer are both formed by polyester film reinforced mica tapes, the overall insulation thickness of the insulating layer is reduced by 16% -44% compared with the traditional product, the slot filling rate of the coil can be improved, the temperature rise is reduced, and the volume of the motor can be reduced under the same motor power requirement; in addition, the polyester film reinforced mica tape forming the second wrapping layer is coated with a B-stage hot melt adhesive layer, so that painting or padding of a gluing material is not needed in the process of subsequent winding processing and winding into a coil, and the coil can be glued and formed in the baking and pressing process, so that the use of subsequent processing procedures and materials can be reduced, and the manufacturing cost of the coil is greatly reduced.
In addition, the first wrapping layer and the second wrapping layer are wrapped in a precision butt-joint wrapping mode, compared with the existing 1/3 and 50% wrapping mode, the insulating paint infiltration path of the product in vacuum paint dipping is shorter, the material structure of each mica tape is loose and easy to absorb liquid substances, the self resin content is low, and therefore the insulating layer is easier to be infiltrated by impregnating paint under the same temperature, pressure and time conditions in vacuum paint dipping.
The winding of the invention has stable linear performance, excellent electrical performance, 4a and 6b bending, steel ball method, breakdown voltage value more than 6000V and less glue, and the product is convenient to dip paint into mica of an insulating layer by adopting a VPI vacuum paint dipping mode after being processed into a coil, thereby greatly improving the electrical performance of the product and preventing the product from breakdown up to 20000V.
The present invention has been described in detail with the purpose of enabling those skilled in the art to understand and practice the present invention, but not to limit the scope of the present invention, and the present invention is not limited to the above-described embodiments, and all equivalent changes or modifications according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (4)
1. A winding wire for a 10kV motor, comprising:
the conductor is composed of rectangular copper flat wires, the thickness of each rectangular copper flat wire is 0.5-6 mm, four corners of each rectangular copper flat wire are rounded corners, and the radius of each rounded corner is 0.5-1.00 mm;
the insulating layer is attached to the conductor and comprises a paint film coating coated on the outer periphery of the conductor, and a first wrapping layer and a second wrapping layer which are sequentially wrapped outwards by the paint film coating;
the method is characterized in that:
the first wrapping layer is formed by a polyester film reinforced mica tape, the polyester film reinforced mica tape forming the first wrapping layer comprises a first mica base tape, a first polyester film and a second polyester film, the first polyester film and the second polyester film are attached to two side surfaces of the first mica base tape, the first mica base tape is calcined mica, 75+/-8 g/mm < 2 > of epoxy resin is used for adhesion, the first polyester film is close to the paint film coating, the thickness of the first polyester film is 0.006mm, the second polyester film is close to the second wrapping layer, and the thickness of the second polyester film is 0.023mm, so that the thickness of the polyester film reinforced mica tape forming the first wrapping layer is 0.09mm;
the second wrapping layer is formed by a polyester film reinforced mica tape coated with a B-stage hot melt adhesive layer, the polyester film reinforced mica tape forming the second wrapping layer comprises a second mica base tape, a third polyester film and a fourth polyester film, wherein the third polyester film and the fourth polyester film are attached to two side surfaces of the second mica base tape, the second mica base tape is calcined mica, 75+/-8 g/mm < 2 > epoxy resin is used for adhesion, the third polyester film is relatively close to the first wrapping layer, the thickness of the third polyester film is 0.006mm, the fourth polyester film is relatively far away from the first wrapping layer, the thickness of the fourth polyester film is 0.023mm, and the B-stage hot melt adhesive layer is coated on the outer side surface of the fourth polyester film, so that the thickness of the polyester film reinforced mica tape forming the second wrapping layer is 0.09mm;
the first wrapping layer is wrapped in a clockwise or anticlockwise direction, the wrapping of the first wrapping layer is precision butt seam wrapping with the wrapping rate of 0%, the wrapping gap distance between edges of the first mica tape in the first wrapping layer is less than or equal to 0.3mm, the first polyester film faces inwards during wrapping, and the second polyester film faces outwards; the wrapping direction of the second wrapping layer is consistent with the wrapping direction of the first wrapping layer, the wrapping of the second wrapping layer is precision butt seam wrapping with the wrapping rate of 0%, the wrapping gap distance between edges of the second mica tape in the second wrapping layer is less than or equal to 0.5mm, the third polyester film faces inwards during wrapping, the fourth polyester film faces outwards, and the distance between the wrapping gap of the second mica tape in the second wrapping layer and the wrapping gap of the first mica tape in the first wrapping layer is controlled within the range of 50+/-10% of the mica tape bandwidth; and the total insulation thickness formed by the first wrapping layer and the second wrapping layer and the paint film coating after the wrapping and compressing is 0.45-0.50 mm.
2. The winding wire for a 10kV motor according to claim 1, characterized in that: the paint film coating is a polyester imide paint film coating, or a polyester and polyamide imide composite paint film coating, or a polyester imide and polyamide imide composite paint film coating, or a polyamide imide paint film layer.
3. The winding wire for a 10kV motor according to claim 1, characterized in that: the thickness of the paint film coating is 0.12 mm-0.17 mm.
4. The winding wire for a 10kV motor according to claim 1, characterized in that: the paint film coating is coated on the surface of the conductor in a repeated coating and baking mode, the thickness of a paint film formed after each painting is 0.010-0.020 mm, and the uniformity of the thickness of the film layer is ensured by adopting a paint scraping die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910297882.5A CN109994254B (en) | 2019-04-15 | 2019-04-15 | Winding wire for 10kV motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910297882.5A CN109994254B (en) | 2019-04-15 | 2019-04-15 | Winding wire for 10kV motor |
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| Publication Number | Publication Date |
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| CN109994254A CN109994254A (en) | 2019-07-09 |
| CN109994254B true CN109994254B (en) | 2024-04-16 |
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| US6927342B1 (en) * | 2000-06-23 | 2005-08-09 | Von Roll Isola Winding Systems Gmbh | Insulation for electrical conductors that produces no partial discharges |
| JP2008192585A (en) * | 2007-01-31 | 2008-08-21 | Okabe Mica Co Ltd | Multilayer laminated mica tape |
| CN101295561A (en) * | 2007-04-24 | 2008-10-29 | 上海申茂电磁线厂 | Production method of multi-layer mica tape precise lapping electromagnetic wire for high tension motor |
| CN101414493A (en) * | 2008-12-08 | 2009-04-22 | 长沙长利电工材料有限责任公司 | A kind of electromagnetic wire and coil windings |
| CN201413668Y (en) * | 2009-06-01 | 2010-02-24 | 苏州巨峰金属线缆有限公司 | Self-adhesive polyester double glass fiber wrapped copper-clad magnesium-aluminum alloy flat wire |
| CN201556453U (en) * | 2009-09-30 | 2010-08-18 | 江苏迅达电磁线有限公司 | Mica tape-lapped thin film-deposited copper flat wire |
| CN101894617A (en) * | 2010-07-28 | 2010-11-24 | 江苏豪威富电气股份有限公司 | Self-adhesion mica tape winding wire with improved structure |
| CN202018843U (en) * | 2011-04-12 | 2011-10-26 | 湖南新新线缆有限公司 | Polyimide film-hot melt adhesive-accelerant-mica lapped wire |
| CN102354547A (en) * | 2011-09-25 | 2012-02-15 | 江苏迅达电磁线有限公司 | Pressed square enamelled multiple copper stranded wires wrapped with corona-resistant mica tape and processing technology thereof |
| CN202976925U (en) * | 2012-11-23 | 2013-06-05 | 上海中马电磁线有限公司 | 155-level self-adhesive double-glass fiber covered mica tape wrapped copper flat wire |
| CN103280908A (en) * | 2013-05-29 | 2013-09-04 | 苏州巨峰电气绝缘系统股份有限公司 | Turn-to-turn insulation structure of ultra-thin 10kV high-voltage motor and manufacturing method thereof |
| CN103280265A (en) * | 2013-06-17 | 2013-09-04 | 湖南新新线缆有限公司 | Double-mica imine sintering winding wire for offshore wind power |
| CN203386500U (en) * | 2013-06-17 | 2014-01-08 | 湖南新新线缆有限公司 | Double-mica imine sintering winding wire used for offshore wind power |
| CN203760104U (en) * | 2013-11-21 | 2014-08-06 | 株洲时代电气绝缘有限责任公司 | Glass fiber-covered polyimide film reinforcing mica tape lapped wire |
| CN104851486A (en) * | 2015-05-22 | 2015-08-19 | 苏州贯龙电磁线股份有限公司 | Environment-friendly electromagnetic wire |
| CN106876015A (en) * | 2017-03-24 | 2017-06-20 | 苏州贯龙电磁线有限公司 | A kind of half-hard state winding wire and its processing technology |
| CN206524211U (en) * | 2017-03-17 | 2017-09-26 | 苏州贯龙电磁线有限公司 | A kind of cloud rail locomotive engines stator winding line |
| CN108269652A (en) * | 2016-12-31 | 2018-07-10 | 江苏迅达电磁线有限公司 | High frequency corrosion-and high-temp-resistant litz wire |
| CN209515224U (en) * | 2019-04-15 | 2019-10-18 | 苏州贯龙电磁线有限公司 | A kind of 10kV motor winding wire |
| CN113488225A (en) * | 2021-06-16 | 2021-10-08 | 上海申茂电磁线有限公司 | Wrapped enameled wire |
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| JP5166495B2 (en) * | 2010-08-11 | 2013-03-21 | 株式会社日立製作所 | Dry mica tape and electrically insulated wire ring using the same |
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| CN201413668Y (en) * | 2009-06-01 | 2010-02-24 | 苏州巨峰金属线缆有限公司 | Self-adhesive polyester double glass fiber wrapped copper-clad magnesium-aluminum alloy flat wire |
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| CN101894617A (en) * | 2010-07-28 | 2010-11-24 | 江苏豪威富电气股份有限公司 | Self-adhesion mica tape winding wire with improved structure |
| CN202018843U (en) * | 2011-04-12 | 2011-10-26 | 湖南新新线缆有限公司 | Polyimide film-hot melt adhesive-accelerant-mica lapped wire |
| CN102354547A (en) * | 2011-09-25 | 2012-02-15 | 江苏迅达电磁线有限公司 | Pressed square enamelled multiple copper stranded wires wrapped with corona-resistant mica tape and processing technology thereof |
| CN202976925U (en) * | 2012-11-23 | 2013-06-05 | 上海中马电磁线有限公司 | 155-level self-adhesive double-glass fiber covered mica tape wrapped copper flat wire |
| CN103280908A (en) * | 2013-05-29 | 2013-09-04 | 苏州巨峰电气绝缘系统股份有限公司 | Turn-to-turn insulation structure of ultra-thin 10kV high-voltage motor and manufacturing method thereof |
| CN103280265A (en) * | 2013-06-17 | 2013-09-04 | 湖南新新线缆有限公司 | Double-mica imine sintering winding wire for offshore wind power |
| CN203386500U (en) * | 2013-06-17 | 2014-01-08 | 湖南新新线缆有限公司 | Double-mica imine sintering winding wire used for offshore wind power |
| CN203760104U (en) * | 2013-11-21 | 2014-08-06 | 株洲时代电气绝缘有限责任公司 | Glass fiber-covered polyimide film reinforcing mica tape lapped wire |
| CN104851486A (en) * | 2015-05-22 | 2015-08-19 | 苏州贯龙电磁线股份有限公司 | Environment-friendly electromagnetic wire |
| CN108269652A (en) * | 2016-12-31 | 2018-07-10 | 江苏迅达电磁线有限公司 | High frequency corrosion-and high-temp-resistant litz wire |
| CN206524211U (en) * | 2017-03-17 | 2017-09-26 | 苏州贯龙电磁线有限公司 | A kind of cloud rail locomotive engines stator winding line |
| CN106876015A (en) * | 2017-03-24 | 2017-06-20 | 苏州贯龙电磁线有限公司 | A kind of half-hard state winding wire and its processing technology |
| CN209515224U (en) * | 2019-04-15 | 2019-10-18 | 苏州贯龙电磁线有限公司 | A kind of 10kV motor winding wire |
| CN113488225A (en) * | 2021-06-16 | 2021-10-08 | 上海申茂电磁线有限公司 | Wrapped enameled wire |
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