CN101917081B - Insulating structure of 10 kV high-voltage motor stator coil - Google Patents
Insulating structure of 10 kV high-voltage motor stator coil Download PDFInfo
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- CN101917081B CN101917081B CN2010102606944A CN201010260694A CN101917081B CN 101917081 B CN101917081 B CN 101917081B CN 2010102606944 A CN2010102606944 A CN 2010102606944A CN 201010260694 A CN201010260694 A CN 201010260694A CN 101917081 B CN101917081 B CN 101917081B
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Abstract
The invention relates to an insulating structure of a 10 KV high-voltage motor stator coil, mainly comprising a coil straight-line insulating part and a coil end-part insulating part, wherein the coil straight-line insulating part is formed by wrapping five layers of single-side glass cloth reinforcing resin-poor mica tapes in a half-lap way and four layers of single-side thin film reinforcing resin-poor mica tapes in the half-lap way; inverted conical lap is formed between each layer of single-side thin film reinforcing resin-poor mica tapes of the coil end-part insulating part and each layer of single-side glass cloth reinforcing resin-poor mica tapes of the coil straight-line insulating part; a layer of high-resistance tapes is wrapped outside the connecting bend part of the coil end-part insulating part and the coil straight-line insulating part in the half-lap way, and polyester tapes are wrapped on outer layers of the high-resistance tapes in the half-lap way; both sides of the lead-out position of a lead wire of the coil end-part insulating part are provided with polyester felts in a padding way, and the polyester felts and the lead wire are fixed by being wound by three layers of polyester fiber and alkali-free glass fiber interlace tapes. The invention can omit the mould pressing procedure of a coil because the coil is directly inserted after being well wrapped and insulated, thereby greatly enhancing the production efficiency; and in addition, the stable operation of a high-voltage motor can be better ensured.
Description
Technical field
The present invention relates to a kind of insulation system of 10KV high-voltage motor stator coil; Be that the monolateral insulation thickness of researching and developing to the 10KV high-voltage motor stator coil is the structure of 2.4mm; Be applicable to few glue VPI (vacuum pressure impregnation) technology, can guarantee the stable operation of high-voltage motor preferably.
Background technology
In prior art, the high-voltage motor stationary part adopts mold pressing coil pattern, and promptly the high-tension stator coil straight line portion adopts many glue mica tapes, and the hot-press solidifying aftershaping one by one in the embedded groove, carries out coil normal pressure after rule finishes and immerses then.The shortcoming of this technology is that many glue mica tapes mica content is few, so insulation thickness is thicker, so that effectively material is few in the stator slot; Motor volume is big, and straight line portion hot pressing work efficiency is low, and owing to adopt normal pressure to immerse; Leave certain clearance between stator core and the coil; Make motor in running, be prone to produce vibration, thereby destroy insulation, shorten motor useful life.
The another kind of few adhesive process of VPI that adopts, coil main insulation all adopts the low resin mica tape of glass cloth reinforcement or film reinforcement, and mica content is high, does not need hot pressing directly to roll off the production line after wrapping insulation, adopts the VPI vacuum pressure impregnation.But this process characteristic is a coil insulation thickness attenuate, improves the groove utilance, can save material, improves power.Shortcoming is that few adhesive tape structure impregnability of full glass cloth reinforcement is better, but few adhesive tape proof voltage level of glass cloth reinforcement is relatively low; Though and few adhesive tape proof voltage intensity of full film reinforcement is higher, this structure impregnability is relatively poor relatively, thereby makes the coil dielectric loss higher, and the proof voltage level does not also reach higher level.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, coil proof voltage level is improved, dielectric loss reduces simultaneously, makes the insulation system of high-voltage motor be suitable for stablizing long-term operation.
According to technical scheme provided by the invention, a kind of insulation system of 10KV high-voltage motor stator coil is made up of the insulation of coil straight line, end winding insulation two parts; Said coil straight line insulated part is made up of for four layers five layers of single face glass cloth reinforcement low resin mica tape half-stack packages, single-sided film reinforcement low resin mica tape half-stack package; Between the second layer of the ground floor of single face glass cloth reinforcement low resin mica tape half-stack package and single face glass cloth reinforcement low resin mica tape half-stack package, half-stack package single-sided film reinforcement low resin mica tape ground floor is set, between the second layer of single face glass cloth reinforcement low resin mica tape half-stack package and single face glass cloth reinforcement low resin mica tape half-stack package the 3rd layer, the half-stack package single-sided film reinforcement low resin mica tape second layer is set; Between the 3rd layer of single face glass cloth reinforcement low resin mica tape half-stack package and single face glass cloth reinforcement low resin mica tape half-stack package the 4th layer, the 3rd layer of half-stack package single-sided film reinforcement low resin mica tape is set; Between the layer 5 of the 4th layer of single face glass cloth reinforcement low resin mica tape half-stack package and single face glass cloth reinforcement low resin mica tape half-stack package, the 4th layer of half-stack package single-sided film reinforcement low resin mica tape is set; At the low stopband of said single face glass cloth reinforcement low resin mica tape half-stack package layer 5 outside half-stack package one deck; Said end winding insulated part adopts eight layers of single-sided film reinforcement low resin mica tape half-stack packages, half-stack package terylene silk ribbon one deck in eight layers of outside of single-sided film reinforcement low resin mica tape half-stack package; Form anti-cone overlap joint between each layer single face glass cloth reinforcement low resin mica tape of each layer single-sided film reinforcement low resin mica tape of said end winding insulated part and coil straight line insulated part.
The high stopband of half-stack package one deck outside said overhang insulation part and the bent angle position that coil straight line insulated part is connected, high resistant tape beginning end to whole winding end skin half-stack package terylene silk ribbon one deck.
The both sides pad of said overhang insulation part fuse drawn place is established terylene felt one deck, and the terylene felt is fixing with washing three layers of glass band lap wounds with lead-in wire.
Core length 30mm is stretched out at said low stopband two ends, and hypotenuse is started, is cut into when finishing up in said low stopband wrapping flushes its edges at two ends.
Said overhang insulation partly goes between when insulation bag, with length >=70mm that end coil separates in evenly completion stairstepping transition stacked package, the insulating barrier length on the lead-in wire is stretched out end winding 20～25mm.
Compared with present technology the present invention has the following advantages:
The present invention presses to compare with many rubber mouldings directly rolls off the production line after coil is wrapped insulation, can omit the coil die stamping operation, enhances productivity greatly.Compare with few full glass cloth mica tape of glue VPI or full thin film mica tape structure, have the problem of having taken into account impregnability and proof voltage intensity.
Description of drawings
Fig. 1 is a general assembly structural representation of the present invention.
Fig. 2 is a coil straight line insulated part main insulation cutaway view of the present invention.
Fig. 3 is an end winding insulated part sketch map.
Embodiment
Following the present invention will combine the structure in the accompanying drawing to further describe:
Shown in Fig. 1 ~ 3: comprise the high stopband of the low stopband 4 of 5442-1D single-sided film reinforcement low resin mica tape 1,0.1X25 terylene silk ribbon 2,5442-1 single face glass cloth reinforcement low resin mica tape 3,0.1x25,0.2x20 5,2X10X100 terylene felt 6, wash glass band 7 etc.
The present invention is made up of the insulation of coil straight line, end winding insulation two parts, and concrete structure is described below:
Said coil straight line insulated part is made up of for four layers five layers of single face glass cloth reinforcement low resin mica tape 3 half-stack packages, single-sided film reinforcement low resin mica tape 1 half-stack package.Between the second layer 3-2 of the ground floor 3-1 of single face glass cloth reinforcement low resin mica tape 3 half-stack packages and single face glass cloth reinforcement low resin mica tape 3 half-stack packages, half-stack package single-sided film reinforcement low resin mica tape 1-1 ground floor is set, between the 3rd layer of 3-3 of the second layer 3-2 of single face glass cloth reinforcement low resin mica tape 3 half-stack packages and single face glass cloth reinforcement low resin mica tape 3 half-stack packages, the half-stack package single-sided film reinforcement low resin mica tape 1-2 second layer is set; Between the 4th layer of 3-4 of the 3rd layer of 3-3 of single face glass cloth reinforcement low resin mica tape 3 half-stack packages and single face glass cloth reinforcement low resin mica tape 3 half-stack packages, the 3rd layer of 1-3 of half-stack package single-sided film reinforcement low resin mica tape 1 is set; Between the layer 5 3-5 of the 4th layer of 3-4 of single face glass cloth reinforcement low resin mica tape 3 half-stack packages and single face glass cloth reinforcement low resin mica tape 3 half-stack packages, the 4th layer of 1-4 of half-stack package single-sided film reinforcement low resin mica tape 1 is set; At the low stopband 4 of said single face glass cloth reinforcement low resin mica tape 3 half-stack package layer 5 3-5 outside half-stack package one deck.
Said 0.1x25 is low, and core length 30mm is stretched out at stopband 4 two ends, and hypotenuse is started, is cut into when finishing up in low stopband 4 wrappings of 0.1x25 flushes its edges at two ends.
Said end winding insulated part structure is not because of directly colliding with unshakable in one's determination and casing, so adopt eight layers of single-sided film reinforcement low resin mica tape 1 half-stack packages, half-stack package terylene silk ribbon 2 one decks in eight layers of outside of single-sided film reinforcement low resin mica tape 1 half-stack package.The same overhang insulation of insulation wrapping on the lead-in wire that end winding insulated part end is comprised, during the insulation of lead-in wire bag, with length >=70mm that end coil separates in evenly completion stairstepping transition stacked package, the insulating barrier length on the lead-in wire is stretched out end winding 20～25mm.
During wrapping, form anti-cone overlap joint (showing) between each layer single face glass cloth reinforcement low resin mica tape 3 of each layer single-sided film reinforcement low resin mica tape 1 of said end winding insulated part and coil straight line insulated part like Fig. 2.The high stopband 5 of half-stack package one deck 0.2x20 outside overhang insulation part and the bent angle position that coil straight line insulated part is connected, high stopband 5 initiating terminals of 0.2x20 to whole winding end skin half-stack package terylene silk ribbon 2 one decks.
During wrapping; Form anti-cone overlap joint (showing) between each layer single face glass cloth reinforcement low resin mica tape 3 of each layer single-sided film reinforcement low resin mica tape 1 of said end winding insulated part and coil straight line insulated part like Fig. 2; Establish 2X10X100 terylene felt 6 one decks at the both sides pad of overhang insulation part fuse drawn place; 2X10X100 terylene felt 6 is fixing with washing three layers of glass band 7 lap wounds with lead-in wire; The high stopband 5 of half-stack package one deck 0.2x20 outside overhang insulation part and the bent angle position that coil straight line insulated part is connected, high stopband 5 initiating terminals of 0.2x20 to whole winding end skin half-stack package terylene silk ribbon 2 one decks.
The structure that straight line portion insulation (title main insulation) in the embedded groove of the present invention adopts single face glass cloth reinforcement low resin mica tape 5442-1 and two kinds of material 5+4 of single-sided film reinforcement low resin mica tape 5442-1D to mix bag; The insulation thickness that has overcome many rubber mouldings line ball circle is thicker; So that effectively material is few in the stator slot; Motor volume is big, and straight line portion hot pressing work efficiency is low, shortcomings such as motor weak point in useful life; It is low to have overcome the common few full glass cloth reinforcement of tree lace circle mica tape structure or the full film reinforcement mica tape existing proof voltage puncture of structure level, shortcomings such as dipping lacquer poor permeability.This structure is compared with short production cycle with many rubber mouldings pressures, move more stable; Compare the problem of having taken into account impregnability and proof voltage intensity with common few plastic structure, and dielectric loss is reduced, thereby the life-span of improving the high-voltage motor stator insulation makes the motor operation more reliable and more stable.
Claims (4)
1. the insulation system of a 10KV high-voltage motor stator coil comprises coil straight line insulated part, end winding insulated part; It is characterized in that: said coil straight line insulated part is by five layers of single face glass cloth reinforcement low resin mica tape (3) half-stack packages, four layers of formation of single-sided film reinforcement low resin mica tape (1) half-stack package; Between the second layer (3-2) of the ground floor (3-1) of single face glass cloth reinforcement low resin mica tape half-stack package and single face glass cloth reinforcement low resin mica tape half-stack package, half-stack package single-sided film reinforcement low resin mica tape ground floor (1-1) is set, between the 3rd layer (3-3) of the second layer (3-2) of single face glass cloth reinforcement low resin mica tape half-stack package and single face glass cloth reinforcement low resin mica tape half-stack package, the half-stack package single-sided film reinforcement low resin mica tape second layer (1-2) is set; Between the 4th layer (3-4) of the 3rd layer (3-3) of single face glass cloth reinforcement low resin mica tape half-stack package and single face glass cloth reinforcement low resin mica tape half-stack package, the 3rd layer of low resin mica tape of half-stack package single-sided film reinforcement (1-3) is set; Between the layer 5 (3-5) of the 4th layer (3-4) of single face glass cloth reinforcement low resin mica tape half-stack package and single face glass cloth reinforcement low resin mica tape half-stack package, the 4th layer of low resin mica tape of half-stack package single-sided film reinforcement (1-4) is set; The low stopband (4) of half-stack package one deck in said single face glass cloth reinforcement low resin mica tape half-stack package layer 5 (3-5) outside; Said end winding insulated part adopts eight layers of single-sided film reinforcement low resin mica tape (1) half-stack packages, half-stack package terylene silk ribbon (2) one deck in eight layers of outside of single-sided film reinforcement low resin mica tape (1) half-stack package; Form anti-cone overlap joint between each layer single-sided film reinforcement low resin mica tape (1) of said end winding insulated part and each layer single face glass cloth reinforcement low resin mica tape (3) of coil straight line insulated part and the single-sided film reinforcement low resin mica tape (1).
2. the insulation system of a kind of 10KV high-voltage motor stator coil as claimed in claim 1; It is characterized in that: the high stopband of half-stack package one deck (5) outside said overhang insulation part and the bent angle position that coil straight line insulated part is connected, high stopband (5) initiating terminal to whole winding end skin half-stack package terylene silk ribbon (2) one deck.
3. the insulation system of a kind of 10KV high-voltage motor stator coil as claimed in claim 1; It is characterized in that: the both sides pad of said overhang insulation part fuse drawn place is established terylene felt (6) one deck, and terylene felt (6) is fixing with washing three layers of glass band (7) lap wounds with lead-in wire.
4. the insulation system of a kind of 10KV high-voltage motor stator coil as claimed in claim 1 is characterized in that: core length 30mm is stretched out at said low stopband (4) two ends, and hypotenuse is started, is cut into when finishing up in said low stopband (4) wrapping flushes its edges at two ends.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102606944A CN101917081B (en) | 2010-08-24 | 2010-08-24 | Insulating structure of 10 kV high-voltage motor stator coil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102606944A CN101917081B (en) | 2010-08-24 | 2010-08-24 | Insulating structure of 10 kV high-voltage motor stator coil |
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| CN101917081A CN101917081A (en) | 2010-12-15 |
| CN101917081B true CN101917081B (en) | 2012-01-25 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103035327A (en) * | 2012-12-04 | 2013-04-10 | 江苏航天动力机电有限公司 | Large current pin structure of coil wound rotor motor |
| CN103280908B (en) * | 2013-05-29 | 2015-06-24 | 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 |
| CN104917321B (en) * | 2015-06-03 | 2017-10-17 | 卧龙电气集团股份有限公司 | A kind of 10KV high-voltage motors formed coil and its processing method |
| CN105449898A (en) * | 2015-12-29 | 2016-03-30 | 安徽威能电机有限公司 | High-tension stator coil insulation structure |
| CN108183587A (en) * | 2017-12-13 | 2018-06-19 | 卧龙电气集团股份有限公司 | A kind of manufacturing method of 10kV compact high-voltage motors ultrathin insulating structure |
| CN116581916B (en) * | 2023-05-22 | 2024-04-30 | 上海品星防爆电机有限公司 | High-temperature-resistant stator winding structure and production process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2799100B2 (en) * | 1992-01-09 | 1998-09-17 | 株式会社日立製作所 | Manufacturing method for electrical equipment windings |
| JP3458693B2 (en) * | 1998-02-27 | 2003-10-20 | 株式会社日立製作所 | Insulation and electric winding |
| CN100426630C (en) * | 2006-08-31 | 2008-10-15 | 施之英 | Method for twining VPI corona-prevention layer between stator coil main insulating layer and corona-prevention layer |
| JP2008227436A (en) * | 2007-03-08 | 2008-09-25 | Okabe Mica Co Ltd | Dynamo-electric-machine coil using multilayer reconstituted mica tape |
| CN201854114U (en) * | 2010-08-24 | 2011-06-01 | 无锡市中达电机有限公司 | Insulation structure for stator coil of 10kV high-voltage motor |
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Address after: 214135 Jiangsu Province, Wuxi city Xin'an District Street Su Xi Road No. 888 Patentee after: Zhongda Motors Co., Ltd. Address before: 214135 Jiangsu Province, Wuxi city Xin'an District Street Su Xi Road No. 888 Patentee before: Wuxi Zhongda Motors Co., Ltd. |