CN201781349U - Insulation structure of stator coil of 6kV high-voltage motor - Google Patents
Insulation structure of stator coil of 6kV high-voltage motor Download PDFInfo
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- CN201781349U CN201781349U CN2010205023647U CN201020502364U CN201781349U CN 201781349 U CN201781349 U CN 201781349U CN 2010205023647 U CN2010205023647 U CN 2010205023647U CN 201020502364 U CN201020502364 U CN 201020502364U CN 201781349 U CN201781349 U CN 201781349U
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- resin mica
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Abstract
The utility model relates to an insulation structure of a stator coil of a 6kV high-voltage motor. The insulation structure includes a coil linear insulation part and a coil end insulation part, wherein signal-sided film reinforced type dry mica tapes of the coil end insulation part is in inverted-cone lapping connection with single-sided glass cloth reinforced type dry mica tapes of the coil linear insulation part, two layers of terylene felts are arranged on two sides of a leading-out part of every lead of the end insulation part respectively, the terylene felts and the leads are fixed through lap-winding of three layers of polyester fiber and E-glass filament interlace tapes, a corner piece part where the coil end insulation part is connected with the coil linear insulation part is wrapped by a half lap of high-resistance tape, and the outer layer of the part from the starting end of the high-resistance belt to the end of a whole coil is wrapped by a half lap of polyester yarn tape. A coil adopting the insulation structure can be directly inserted after wrapped well and insulated, the working procedure of mould pressing of the coil can be eliminated and the production efficiency can be greatly improved. The insulation structure integrates the advantages of impregnability and voltage resistance strength. The insulation structure is applicable to dry VPI (vacuum pressure impregnation) technology, and can better ensure the stable operation of the high-voltage motor.
Description
Technical field
The utility model relates to a kind of insulation system of 6KV high-voltage motor stator coil, be that the monolateral insulation thickness of researching and developing at the 6KV high-voltage motor stator coil is the structure of 1.5mm, 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, easily 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 the mica content height 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 purpose of this utility model is to overcome above-mentioned weak point, and coil proof voltage level is improved, and dielectric loss reduces simultaneously, makes the insulation system of high-voltage motor be suitable for stablizing long-term operation.
According to the technical scheme that the utility model provides, a kind of insulation system of 6KV high-voltage motor stator coil is made of the insulation of coil straight line, end winding insulation two parts.
Described coil straight line insulated part by four 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 is two-layer constitutes.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; The 4th layer of low stopband of outside half-stack package at described single face glass cloth reinforcement low resin mica tape half-stack package; Described end winding insulated part structure adopts five layers of single-sided film reinforcement low resin mica tape half-stack packages, at five layers of outside of single-sided film reinforcement low resin mica tape half-stack package half-stack package terylene silk ribbon one deck; 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 described end winding insulated part and coil straight line insulated part.
The both sides pad of described 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.
The high stopband of half-stack package one deck outside described overhang insulation part and the bent angle position that coil straight line insulated part is connected, the high resistant tape beginning end is to whole winding end skin half-stack package terylene silk ribbon one deck.
Core length 30mm is stretched out at described low stopband two ends, and hypotenuse is started, is cut into when finishing up in low stopband wrapping flushes its edges at two ends.
Described single-sided film reinforcement low resin mica tape is evenly finished stairstepping transition stacked package in lead-in wire and length 〉=70mm that coil separates, the insulating barrier length on the lead-in wire is stretched out end winding 20～25mm.
Compared with the prior art the utility model has the following advantages:
The utility model is pressed to compare with many rubber mouldings and is directly rolled off the production line after coil is wrapped insulation, can omit the coil die stamping operation, enhances productivity greatly.Adopt full glass cloth mica tape or full thin film mica tape structure to compare with few glue VPI coil straight line portion, have the advantage of having taken into account impregnability and proof voltage intensity.
Description of drawings
Fig. 1 is the utility model general assembly structural representation.
Fig. 2 is the utility model coil straight line insulated part (title main insulation) cutaway view.
Fig. 3 is the utility model end winding insulated part schematic diagram.
Embodiment
Structure during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
Shown in Fig. 1 ~ 3: comprise single-sided film reinforcement low resin mica tape 1, terylene silk ribbon 2, single face glass cloth reinforcement low resin mica tape 3, low stopband 4, high stopband 5, terylene felt 6, wash glass band 7 etc.
The utility model is made of coil straight line insulated part, end winding insulation two parts, and concrete structure is described below:
Described coil straight line insulated part by four 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 is two-layer constitutes.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 ground floor 1-1 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, half-stack package single-sided film reinforcement low resin mica tape 1 second layer 1-2 is set; The 4th layer of low stopband 4 of 3-4 outside half-stack package at described single face glass cloth reinforcement low resin mica tape 3 half-stack packages; Core length 30mm is stretched out at described low stopband 4 two ends, and hypotenuse is started, is cut into when finishing up in low stopband 4 wrappings flushes its edges at two ends.
Described end winding insulated part structure is not collided with unshakable in one's determination and casing because of direct, thus adopt five layers of single-sided film reinforcement low resin mica tape 1 half-stack packages, at five layers of outside of single-sided film reinforcement low resin mica tape 1 half-stack package half-stack package terylene silk ribbon 2 one decks.The same overhang insulation of insulation wrapping on the lead-in wire that the end comprised, during the insulation of lead-in wire bag, with length 〉=70mm that end coil separates in evenly finish stairstepping transition stacked package, the insulating barrier length on the lead-in wire is stretched out end winding 20～25mm.The both sides pad of fuse drawn place is established terylene felt 6 one decks, and terylene felt 6 is fixing with washing three layers of glass band 7 lap wounds with lead-in wire.
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 described end winding insulated part and coil straight line insulated part as Fig. 2.The high stopband 5 of half-stack package one deck outside overhang insulation part and the bent angle position that coil straight line insulated part is connected, high stopband 5 initiating terminals are 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 utility model embedded groove adopts single face glass cloth reinforcement low resin mica tape 5442-1 and two kinds of material 4+2 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, 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 (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 is by four layers of single face glass cloth reinforcement low resin mica tape (3) half-stack packages, the two-layer formation of single-sided film reinforcement low resin mica tape (1) half-stack package; The ground floor (1-1) of half-stack package single-sided film reinforcement low resin mica tape is set 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, the second layer (1-2) of half-stack package single-sided film reinforcement low resin mica tape 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; At the low stopband (4) of the 4th layer (3-4) outside of described single face glass cloth reinforcement low resin mica tape half-stack package half-stack package; Described end winding insulated part adopts five layers of single-sided film reinforcement low resin mica tape (1) half-stack packages, at five layers of outside of single-sided film reinforcement low resin mica tape (1) half-stack package half-stack package terylene silk ribbon (2) one deck; Form anti-cone overlap joint between each layer single-sided film reinforcement low resin mica tape (1) of described end winding insulated part and each layer single face glass cloth reinforcement low resin mica tape (3) of coil straight line insulated part.
2. the insulation system of a kind of 6KV high-voltage motor stator coil as claimed in claim 1 is characterized in that: the both sides pad of described 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.
3. the insulation system of a kind of 6KV 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 described overhang insulation part and the bent angle position that coil straight line insulated part is connected, high stopband (5) initiating terminal is to whole winding end skin 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 stopband (4) two ends.
5. the insulation system of a kind of 6KV high-voltage motor stator coil as claimed in claim 1, it is characterized in that: described single-sided film reinforcement low resin mica tape (1) is evenly finished stairstepping transition stacked package in lead-in wire and length 〉=70mm that coil separates, the insulating barrier length on the lead-in wire is stretched out end winding 20～25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205023647U CN201781349U (en) | 2010-08-24 | 2010-08-24 | Insulation structure of stator coil of 6kV high-voltage motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205023647U CN201781349U (en) | 2010-08-24 | 2010-08-24 | Insulation structure of stator coil of 6kV high-voltage motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201781349U true CN201781349U (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205023647U Expired - Lifetime CN201781349U (en) | 2010-08-24 | 2010-08-24 | Insulation structure of stator coil of 6kV high-voltage motor |
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| CN (1) | CN201781349U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101902089A (en) * | 2010-08-24 | 2010-12-01 | 无锡市中达电机有限公司 | Insulation structure of 6KV high-voltage motor stator coil |
| CN103051093A (en) * | 2012-12-03 | 2013-04-17 | 江苏航天动力机电有限公司 | Safety-increased type motor anticorona structure |
| CN105471149A (en) * | 2015-12-21 | 2016-04-06 | 安徽威能电机有限公司 | Insulating structure of 690 V low-voltage high-power molding stator coil |
-
2010
- 2010-08-24 CN CN2010205023647U patent/CN201781349U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101902089A (en) * | 2010-08-24 | 2010-12-01 | 无锡市中达电机有限公司 | Insulation structure of 6KV high-voltage motor stator coil |
| CN101902089B (en) * | 2010-08-24 | 2015-04-22 | 中达电机股份有限公司 | Insulation structure of 6KV high-voltage motor stator coil |
| CN103051093A (en) * | 2012-12-03 | 2013-04-17 | 江苏航天动力机电有限公司 | Safety-increased type motor anticorona structure |
| CN103051093B (en) * | 2012-12-03 | 2016-05-25 | 江苏航天动力机电有限公司 | A kind of INCREASEDSAFETY motor for preventing coronal structure |
| CN105471149A (en) * | 2015-12-21 | 2016-04-06 | 安徽威能电机有限公司 | Insulating structure of 690 V low-voltage high-power molding stator coil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110330 Effective date of abandoning: 20150422 |