CN101902089B - Insulation structure of 6KV high-voltage motor stator coil - Google Patents
Insulation structure of 6KV high-voltage motor stator coil Download PDFInfo
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- CN101902089B CN101902089B CN201010260693.XA CN201010260693A CN101902089B CN 101902089 B CN101902089 B CN 101902089B CN 201010260693 A CN201010260693 A CN 201010260693A CN 101902089 B CN101902089 B CN 101902089B
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- mica tape
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Abstract
The invention relates to an insulation structure of a 6KV high-voltage motor stator coil, comprising a coil straight line insulating part and a coil terminal insulating part, wherein a single-face film reinforced less resin mica tape of the coil terminal insulating part and a single-face glass cloth reinforced less resin mica tape of the coil straight line insulating part are in counter-cone lap joint; the two sides of the part from which the leads of the terminal insulating part are led out are cushioned with two layers of polyester felts; the polyester felts and the leads are fixed by being lap-wound for three layers with a polyester fiber and E-glass filament interlace tape; a layer of high stopband is half-lapped outside the bend part connecting the terminal insulating part and the coil straight line insulating part; and a layer of polyester ribbon is half-lapped from the initiating terminal of the high stopband to the outer layer of the whole coil terminal. The coil is directly off line after being wrapped up and insulated, thus omitting the coil mold pressing procedure and greatly improving the production efficiency. The insulation structure has the advantages of impregnability and dielectric strength. The insulation structure can be applicable to the less resin vacuum pressure impregnation (VPI) process and better ensure stable running of the high-voltage motor.
Description
Technical field
The present invention relates to a kind of insulation system of 6KV high-voltage motor stator coil, be for 6KV high-voltage motor stator coil research and development monolateral insulation thickness be the structure of 1.5mm, be applicable to few glue VPI(vacuum pressure impregnation) technique, the stable operation of high-voltage motor can be ensured preferably.
Background technology
In prior art, high voltage motor stator part adopts mold pressing coil pattern, and namely high-tension stator coil straight line portion adopts resin-rich mica tape, and hot-press solidifying aftershaping, then by coil one by one embedded groove, carries out normal pressure and immerse after rule terminates.The shortcoming of this technique is that resin-rich mica tape mica content is few, so insulation thickness is thicker, so that effectively material is few in stator slot, motor volume is large, and straight line portion hot pressing work efficiency is low, and owing to adopting normal pressure to immerse, certain gap is left between stator core and coil, make motor easily produce vibration in running, thus destroy insulation, shorten motor useful life.
The few adhesive process of another kind of employing VPI, slot armer 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 VPI vacuum pressure impregnation.This process characteristic is that coil insulation thickness can be thinning, improves 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; Although and few adhesive tape dieletric strength of full film reinforcement is higher, this structure impregnability is relatively poor, thus makes coil dielectric loss higher, and proof voltage level does not also reach higher level.
Summary of the invention
The object 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 stable long-term operation.
According to technical scheme provided by the invention, a kind of insulation system of 6KV high-voltage motor stator coil is insulated by coil straight line, end winding insulate, and two parts are formed.
Described coil straight line insulated part by one side glass cloth reinforcement low resin mica tape half-stack package four layers, single-sided film reinforcement low resin mica tape half-stack package is two-layer forms.Half-stack package single-sided film reinforcement low resin mica tape ground floor is set between the ground floor and the second layer of one side glass cloth reinforcement low resin mica tape half-stack package of one side glass cloth reinforcement low resin mica tape half-stack package, the half-stack package single-sided film reinforcement low resin mica tape second layer is set between the second layer and the third layer of one side glass cloth reinforcement low resin mica tape half-stack package of one side glass cloth reinforcement low resin mica tape half-stack package; At the 4th layer of outside half-stack package low-resistance belt of described one side glass cloth reinforcement low resin mica tape half-stack package; Described end winding insulated part structure adopts single-sided film reinforcement low resin mica tape half-stack package five layers, at single-sided film reinforcement low resin mica tape half-stack package five layers outside half-stack package terylene silk ribbon one deck; Form reverse taper between every one deck single-sided film reinforcement low resin mica tape of described end winding insulated part and every one deck one side glass cloth reinforcement low resin mica tape of coil straight line insulated part and single-sided film reinforcement low resin mica tape to overlap.
Terylene felt one deck established by the both sides pad of described overhang insulation part fuse drawn place, and terylene felt is fixed with washing glass band lap wound three layers with lead-in wire.
Half-stack package one deck high stop band outside the bent angle position that described overhang insulation part is connected with coil straight line insulated part, high stop band initiating terminal is to whole end winding outer half-stack package terylene silk ribbon one deck.
Core length 30mm is stretched out at described low-resistance belt two ends, and low-resistance belt wrapping is started, be cut into hypotenuse when finishing up makes its edges at two ends flush.
Described single-sided film reinforcement low resin mica tape evenly completes step-like transition stacked package in length >=70mm that lead-in wire is separated with coil, and the insulating barrier length on lead-in wire stretches out end winding 20 ~ 25mm.
Compared with the prior art the present invention has the following advantages:
The present invention's coil compared with many rubber mouldings pressure directly rolls off the production line after wrapping insulation, can omit coil die stamping operation, greatly enhance productivity.Compared with adopting full glass mica tape or full thin film mica tape structure with few glue VPI coil straight line portion, there is the advantage having taken into account impregnability and dieletric strength.
accompanying drawing illustrates:
Fig. 1 is general assembly structural representation of the present invention.
Fig. 2 is coil straight line insulated part (title main insulation) cutaway view of the present invention.
Fig. 3 is end winding insulated part schematic diagram of the present invention.
Embodiment
Structure in is by reference to the accompanying drawings further described by the present invention below:
As shown in Fig. 1 ~ 3: comprise 5442-1D single-sided film reinforcement low resin mica tape 1,0.1X25 terylene silk ribbon 2,5442-1 one side glass cloth reinforcement low resin mica tape 3,0.1x25 low-resistance belt 4,0.2x20 high stop band 5,2X10X100 terylene felt 6, wash glass band 7 etc.
The present invention is made up of coil straight line insulated part, the end winding two parts that insulate, and concrete structure is described below:
Described coil straight line insulated part is by one side glass cloth reinforcement low resin mica tape 3 half-stack package four layers, one side
The two-layer formation of film reinforcement low resin mica tape 1 half-stack package.Half-stack package single-sided film reinforcement low resin mica tape 1 ground floor 1-1 is set between the ground floor 3-1 and the second layer 3-2 of one side glass cloth reinforcement low resin mica tape 3 half-stack package of one side glass cloth reinforcement low resin mica tape 3 half-stack package, half-stack package single-sided film reinforcement low resin mica tape 1 second layer 1-2 is set between the second layer 3-2 and the third layer 3-3 of one side glass cloth reinforcement low resin mica tape 3 half-stack package of one side glass cloth reinforcement low resin mica tape 3 half-stack package; Half-stack package low-resistance belt 4 outside the 4th layer of 3-4 of described one side glass cloth reinforcement low resin mica tape 3 half-stack package;
Core length 30mm is stretched out at described 0.1x25 low-resistance belt 4 two ends, and 0.1x25 low-resistance belt 4 wrapping is started, be cut into hypotenuse when finishing up makes its edges at two ends flush.
Described end winding insulated part structure because directly not colliding with unshakable in one's determination and casing, therefore adopts single-sided film reinforcement low resin mica tape 1 half-stack package five layers, at single-sided film reinforcement low resin mica tape 1 half-stack package five layers outside half-stack package terylene silk ribbon 2 one deck.The same overhang insulation of insulating wrapping on the lead-in wire that end comprises, during the insulation of lead-in wire bag, in the length >=70mm be separated with end coil, evenly complete step-like transition stacked package, the insulating barrier length on lead-in wire stretches out end winding 20 ~ 25mm.2X10X100 terylene felt 6 one deck established by the both sides pad of fuse drawn place, and 2X10X100 terylene felt 6 is fixed with washing glass band 7 lap wound three layers with lead-in wire.
During wrapping, form reverse taper between every one deck single-sided film reinforcement low resin mica tape 1 of described end winding insulated part and every one deck one side glass cloth reinforcement low resin mica tape 3 of coil straight line insulated part and single-sided film reinforcement low resin mica tape 1 and overlap (as Fig. 2 shows).Outside the bent angle position that overhang insulation part is connected with coil straight line insulated part, half-stack package one deck 0.2x20 high stop band 5,0.2x20 high stop band 5 initiating terminal is to whole end winding outer half-stack package terylene silk ribbon 2 one deck.
Straight line portion insulation (title main insulation) in embedded groove of the present invention adopts one side glass cloth reinforcement low resin mica tape 5442-1 and single-sided film reinforcement low resin mica tape 5442-1D bi-material 4+2 to mix the structure of bag, the insulation thickness overcoming many rubber mouldings line ball circle is thicker, so that effectively material is few in stator slot, motor volume is large, straight line portion hot pressing work efficiency is low, the shortcoming such as motor useful life is short; Overcoming common few tree lace circle full glass cloth reinforcement mica tape structure or full proof voltage existing for film reinforcement mica tape structure, to puncture level low, the shortcomings such as dipping lacquer poor permeability.This structure is with short production cycle compared with many rubber mouldings pressure, runs more stable; Take into account the problem of impregnability and dieletric strength compared with common few plastic structure, and dielectric loss is reduced, thus improved the life-span of high voltage motor stator insulation, motor has been run more reliable and more stable.
Claims (5)
1. the insulation system of a 6KV high-voltage motor stator coil, comprise coil straight line insulated part, end winding insulated part, it is characterized in that: described coil straight line insulated part by one side glass cloth reinforcement low resin mica tape (3) half-stack package four layers, single-sided film reinforcement low resin mica tape (1) half-stack package is two-layer forms; The ground floor (1-1) of half-stack package single-sided film reinforcement low resin mica tape is set between the ground floor (3-1) and the second layer (3-2) of one side glass cloth reinforcement low resin mica tape half-stack package of one side glass cloth reinforcement low resin mica tape half-stack package, the second layer (1-2) of half-stack package single-sided film reinforcement low resin mica tape is set between the second layer (3-2) and the third layer (3-3) of one side glass cloth reinforcement low resin mica tape half-stack package of one side glass cloth reinforcement low resin mica tape half-stack package; In the 4th layer (3-4) outside half-stack package low-resistance belt (4) of described one side glass cloth reinforcement low resin mica tape half-stack package; Described end winding insulated part adopts single-sided film reinforcement low resin mica tape (1) half-stack package five layers, at single-sided film reinforcement low resin mica tape (1) half-stack package five layers outside half-stack package terylene silk ribbon (2) one deck; Form reverse taper between every one deck single-sided film reinforcement low resin mica tape (1) of described end winding insulated part and every one deck one side glass cloth reinforcement low resin mica tape (3) of coil straight line insulated part and single-sided film reinforcement low resin mica tape (1) to overlap.
2. the insulation system of a kind of 6KV high-voltage motor stator coil as claimed in claim 1, is characterized in that: terylene felt (6) one deck established by the both sides pad of described overhang insulation part fuse drawn place, and terylene felt (6) is fixed with washing glass band (7) lap wound three layers with lead-in wire.
3. the insulation system of a kind of 6KV high-voltage motor stator coil as claimed in claim 1, it is characterized in that: half-stack package one deck high stop band (5) outside the bent angle position that described overhang insulation part is connected with coil straight line insulated part, high stop band (5) initiating terminal is to whole end winding outer half-stack package terylene silk ribbon one deck.
4. the insulation system of a kind of 6KV high-voltage motor stator coil as claimed in claim 1, is characterized in that: core length 30mm is stretched out at described low-resistance belt (4) two ends.
5. the insulation system of a kind of 6KV high-voltage motor stator coil as claimed in claim 2, is characterized in that: the insulating barrier length on described lead-in wire stretches out end winding 20 ~ 25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010260693.XA CN101902089B (en) | 2010-08-24 | 2010-08-24 | Insulation structure of 6KV high-voltage motor stator coil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010260693.XA CN101902089B (en) | 2010-08-24 | 2010-08-24 | Insulation structure of 6KV high-voltage motor stator coil |
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| CN101902089A CN101902089A (en) | 2010-12-01 |
| CN101902089B true CN101902089B (en) | 2015-04-22 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103117629B (en) * | 2013-03-20 | 2015-07-08 | 株洲南车机电科技有限公司 | Producing method and structure of insulation structure of long primary linear motor for urban rail vehicle |
| CN103296811B (en) * | 2013-05-29 | 2015-04-01 | 苏州巨峰电气绝缘系统股份有限公司 | Interturn insulating structure of super-thin 6kV high-voltage motor and manufacturing method of interturn insulating structure |
| CN113364165A (en) * | 2021-07-12 | 2021-09-07 | 安徽德科电气科技有限公司 | Corona-proof insulation structure suitable for 5km high-voltage generator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5300844A (en) * | 1992-06-10 | 1994-04-05 | Asea Brown Boveri Ltd. | High-voltage insulation for stator windings of electric machines |
| CN201038855Y (en) * | 2007-03-30 | 2008-03-19 | 江苏锡安达防爆股份有限公司 | High-voltage motor stator coil |
| CN101656440A (en) * | 2009-09-04 | 2010-02-24 | 无锡哈电电机有限公司 | Interturn insulating structure of high-voltage motor stator coil |
| CN201490796U (en) * | 2009-09-04 | 2010-05-26 | 无锡哈电电机有限公司 | Inter-turn insulation structure of high-voltage motor stator coil |
| CN201781349U (en) * | 2010-08-24 | 2011-03-30 | 无锡市中达电机有限公司 | Insulation structure of stator coil of 6kV high-voltage motor |
-
2010
- 2010-08-24 CN CN201010260693.XA patent/CN101902089B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5300844A (en) * | 1992-06-10 | 1994-04-05 | Asea Brown Boveri Ltd. | High-voltage insulation for stator windings of electric machines |
| CN201038855Y (en) * | 2007-03-30 | 2008-03-19 | 江苏锡安达防爆股份有限公司 | High-voltage motor stator coil |
| CN101656440A (en) * | 2009-09-04 | 2010-02-24 | 无锡哈电电机有限公司 | Interturn insulating structure of high-voltage motor stator coil |
| CN201490796U (en) * | 2009-09-04 | 2010-05-26 | 无锡哈电电机有限公司 | Inter-turn insulation structure of high-voltage motor stator coil |
| CN201781349U (en) * | 2010-08-24 | 2011-03-30 | 无锡市中达电机有限公司 | Insulation structure of stator coil of 6kV high-voltage motor |
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| CN101902089A (en) | 2010-12-01 |
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| C06 | Publication | ||
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| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 214115 No. 1, Golden Road, Hongshan street, New District, Jiangsu, Wuxi Applicant after: Zhongda Motors Co., Ltd. Address before: 214135 Jiangsu Province, Wuxi city Xin'an District Street Su Xi Road No. 888 Applicant before: Wuxi Zhongda Motors Co., Ltd. |
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