CN207993638U - A kind of radial division cast foil winding adapting to different connections - Google Patents
A kind of radial division cast foil winding adapting to different connections Download PDFInfo
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- CN207993638U CN207993638U CN201820570691.2U CN201820570691U CN207993638U CN 207993638 U CN207993638 U CN 207993638U CN 201820570691 U CN201820570691 U CN 201820570691U CN 207993638 U CN207993638 U CN 207993638U
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- winding
- foil
- low pressure
- division
- adapting
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- 238000004804 winding Methods 0.000 title claims abstract description 116
- 239000011888 foil Substances 0.000 title claims abstract description 98
- 230000007704 transition Effects 0.000 claims abstract description 24
- 230000017525 heat dissipation Effects 0.000 claims abstract description 8
- 230000011218 segmentation Effects 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model discloses a kind of radial division cast foil winding adapting to different connections and manufacturing methods, which is characterized in that low pressure winding is the Foil winding being segmented by four sections of arranged crosswises（11,12 and 21,22）And heat dissipation air flue（4）Composition, per corresponding two Foil windings（11 and 12,21 and 22）Connect the radial division winding of each self-forming one, two pairs of Foil windings being correspondingly connected with（11 and 12,21 and 22）Between be each provided with a transition foil respectively（2、3）, four terminals of each phase low pressure winding（a1、x1、a2、x2）It is drawn in upper end, it is integral that entire low pressure winding carries out vacuum pouring.The utility model solve the identical and different radial division coiling of winding of low pressure joint group, cast, it is unilateral four lift one's head, the manufacturing methods such as best cross transition, can Enough to meet the impedance after division, resistance complete equipilibrium symmetrical.
Description
Technical field
The utility model is related to the manufactures of epoxy cast transformer, and in particular to a kind of radial division adapting to different connections
Pour into a mould foil winding.
Background technology
In occasions such as photovoltaic generation, wind-power electricity generation, Six-phase rectifiers, it is required to use a kind of transformer with split winding, low pressure
Side winding splits into two windings not being linked electrically, individually runs.The form of winding is divided, some is using axial
Double divisions（See Fig. 1）, some is using the radial division of low pressure（See Fig. 2）.
Using the transformer of the radial division of low pressure, in order to make the technical indicators such as the impedance after division, resistance tend to balance pair
Claim, usually following two structure types.
One is using two groups of electromagnetic wires and around, respectively two groups of coils, every group is a division winding, and two into the end of a thread
A1, a2 and two terminals x1, x2 can also be arranged in upper end in upper/lower terminal.This splitted construction can meet
Impedance, resistance balance after division is symmetrical.But for the winding of more electromagnetic wires of high current, when coiling, is more difficult.Due to
Two division windings electromagnetic wire be and around the insulation between them also will be handled strictly.Meanwhile terminal is arranged in lower end
Person, when cast, can not seal lower end terminal, can not achieve the poured with epoxy resin of whole low-voltage coil.
One is use two copper（Aluminium）Foil, stacking together, place the insulation for being resistant to insulation between two foils
Material, while and around, go out respective terminal with welding copper bus, can be in upper end into and out of the end of a thread, can also be upper and lower two
End arrangement.It is basic approximate can only to meet the impedance after division, resistance due to the difference of ectonexine foil diameter for this splitted construction
Balance.And for terminal in upper/lower terminal arrangement person, equally encountering lower end terminal can not seal, it is difficult to realize epoxy
The technological problems of resin-cast.
Documents propose another structure type, i.e. the division winding of four sections of interlaced arrangements of low pressure point.It is applied
Number it is 201610106606.2, name of patent application is：The axial direction double bundle dry transformer coil structure of identical joint group with
Winding method.Although the impedance, resistance balance after energy Enough satisfaction divisions are symmetrical.But documents are there are wretched insufficiency,（1）
The structure of documents is in electric property（Especially impedance voltage）Should belong to the radial division coil of low pressure, only
Contain axial segmentation again in radial division, but different from division, therefore is not axial direction double bundle coil truly.
（2）The technological problems that winding is difficult to realize poured with epoxy resin are equally existed in upper/lower terminal arrangement terminal.（3）With it is above-mentioned
Two kinds of common structure forms are identical, and two division coils, which synchronize, when coiling carries out, and it is equal to may be only available for two division umber of turns, i.e.,
The division winding of identical joint group is not applied for the division winding of different joint groups.（4）Two copper bars for cross transition
Radial size of the winding at this is increased, keeps winding circumferential thickness uneven, to the transformer winding compared with low capacity it is necessary to tying up
Space between iron core circumscribed circle and low-voltage coil to the transformer winding of slightly larger capacity, or is taken and is blocked inside winding
The method of at least three air flues can make entire low pressure winding reduce heat dissipation table in this way to place the copper bar of this two cross transitions
Area, surface thermal load increase, and temperature rise or even Wen Sheng are more than defined limit value, are harmful to the normal operation of transformer.
（5）Due to there are upper/lower terminal copper bar terminal, when coiling, requires coil winding machine transmission shaft to have enough length, until making limitation
The transformer winding of slightly bigger capacity cannot be manufactured, the transformer winding compared with low capacity can only be manufactured, while it is also inconvenient to start
Stationary positioned.As it can be seen that documents are difficult to carry out in technique.
Utility model content
The purpose of this utility model is exactly to be redefined, and overcome comparison completely on the basis of documents schematic diagram
The defect of file manufacturing process solves to be suitable for identical joint group（The number of turns is identical）With different joint groups（The number of turns differs）Change
The coiling problem, cast problem of transformer coil, the especially radial division of high-power transformer low pressure winding, unilateral side four are lifted one's head and are asked
The manufacturing issues such as topic, best cross transition.To provide a kind of radial division cast foil winding adapting to different connections.
Technical solutions of the utility model：
A kind of radial division cast foil winding adapting to different connections, which is characterized in that low pressure winding is handed over by four sections
The Foil winding and heat dissipation air flue composition of fork arrangement segmentation, each one radial point of self-forming is connected per corresponding two Foil windings
Winding is split, is each provided with a transition foil between two pairs of Foil windings being correspondingly connected with respectively, four of each phase low pressure winding go out
The end of a thread is drawn in upper end, and it is integral that entire low pressure winding carries out vacuum pouring.
Further, the setting structure of two pieces of transition foils is after being cut at the half of each division winding total number of turns, will to cut
The wide position of a foil is moved in left or right side to subsequent foil forward, then by the transition foil of a same thickness, after being welded on
The foil in face move forward after between former foil interval apart, this spacing distance is exactly the width of transition foil, that is, on
Spacing distance between lower segmentation Foil winding.
Further, the sectional position of four terminals of each phase low pressure winding is arranged as the square formation being poised for battle two-by-two
Shape.
Further, the heat dissipation air flue is provided at the number of turns half inside low pressure division winding, according to winding temperature rise
The requirement of limit value and the size of ventilation and heat air flue being arranged.
The utility model solves the coiling, cast, unilateral side of the identical and different radial division winding of low pressure joint group
Four lift one's head, best cross transition etc..Impedance, resistance complete equipilibrium after energy Enough satisfaction divisions is symmetrical.
Description of the drawings
Fig. 1 is axial direction double bundle transformer principle figure related with the utility model.
Fig. 2 is the radial transformer with split winding schematic diagram of low pressure related with the utility model.
Fig. 3 is a kind of radial division cast foil winding schematic diagram adapting to different connections of the utility model.
Fig. 4 is a kind of radial division cast foil winding foil expanded schematic diagram adapting to different connections of the utility model；
Fig. 5 is that a kind of radial division cast foil winding 11 adapting to different connections of the utility model and the expansion of 12 foils are shown
It is intended to；
Fig. 6 is a kind of four terminal positions of radial division cast foil winding adapting to different connections of the utility model
Arrange vertical view.
In figure：Core limb 1, transition foil 2, transition foil 3, radiate air flue 4, Foil winding 11,12, and Foil winding 21,22 is high
Press winding 33, terminal a1（b1、c1）、x1（y1、z1）、a2（b2、c2）、x2（y2、z2）.
Specific implementation mode
The utility model can be with the utility model will be further described, however, this practicality by the following examples
Novel range is not limited to following embodiments.
Embodiment：
A kind of radial division cast foil winding adapting to different connections, low pressure winding is by the segmentation of four sections of arranged crosswises
Foil winding 11,12 and 21,22 and heat dissipation air flue 4 form, and 11 connect and 21 connect respectively with 22 as a radial division with 12
Winding, Foil winding 11 is transitioned into the connection of Foil winding 12 and Foil winding 21 is transitioned into the connection of Foil winding 22, if
There are transition foil 2 and transition foil 3, four terminals a1, x1, a2, x2 of each phase low pressure winding to be drawn in upper end, see Fig. 3,
It is integral that entire low pressure winding carries out vacuum pouring.
The transition foil 2 and transition foil 3 are the chaff of a same thickness to be arranged, after being welded at the half of the number of turns
Between the foil in face moves forward a foil width position, the width of chaff is the spacing distance being segmented up and down between Foil winding,
See 2 and 3 in Fig. 4,5.
Four terminal a1 of each phase low pressure winding（b1、c1）、x1（y1、z1）、a2（b2、c2）、x2（y2、z2）
It is all drawn in upper end, low pressure winding vertical view 6 is shown in position arrangement.
The heat dissipation air flue 4 is at the number of turns half inside low pressure division winding, according to the requirement of winding temperature rise limit value
And the ventilation and heat air flue being arranged.
A kind of radial division cast foil winding adapting to different connections：
（One）When the identical division coil of coiling joint group, i.e., all it is y connections, Foil winding the number of turns phase of two divisions
Deng.The foil for first getting out two division windings is placed on side by side on uncoiling frame, and terminal a1, the a2 that one is long and the other is short are distinguished Tongfang
To two roll-leaf material initiating terminals, the i.e. initiating terminal of Foil winding 11 and Foil winding 21 are welded in, Fig. 4 is seen, then in same winding former
Coiling on tool when the number of turns reaches half, cuts two roll-leaf materials of Foil winding 11 and Foil winding 21.
Further, at this point, since the foil thickness and width size of two division windings is identical, then two roll-leaf materials are placed on out
The position rolled up on frame is constant, by Foil winding 12 by welding the transition foil 2 with 11 same thickness of Foil winding and width, with foil
Formula winding 11 concordantly welds together；Equally, by Foil winding 22 by welding and 21 same thickness of Foil winding and width
Transition foil 3, it is concordant with Foil winding 21 to weld together.
Also further, at the intersection overlapping of two Foil windings, pad is placed gas channel supporting bar mould, is continued around with DMD insulating layers
Complete remaining half the number of turns, burn-on terminal x1, x2 respectively, and direction is identical as terminal a1, a2, terminal a1, a2, x1, x2
Position see Fig. 6.After wrapping up terminal and entire coil, cast external mold is loaded onto, carries out vacuum pouring, that is, low pressure connection is made
The identical radial double-splitting of knot group pours into a mould foil winding.
When division winding is internally provided with the air flue 4 of ventilation and heat, the air flue of two Foil windings intersected at overlapping is answered
Its thickness is reduced, to keep the concentric circularity of winding shape.
（Two）When the different division coil of coiling joint group, i.e. respectively d and y connections, that is, two divisions foil
Formula umber of turn is unequal, differenceCoil again can equally produce radial division cast winding.What is taken is upper
Make appropriate change on the basis of stating.Due to two division windings material for thickness is different and the identical foil of width dimensions, when around to
Half the number of turns of the less y connection Foil windings of total number of turns and after cutting the foil, wouldn't welding transition foil and it is remaining wait for around
Foil, but be fixed temporarily head is cut, continue the position for the more d connections Foil winding of total number of turns being reached around the number of turns half
It sets, after cutting the foil, the position that two roll-leaf materials place uncoiling frame is exchanged, at this point, welding the transition foil of two Foil windings simultaneously
And the identical foil of thickness and width is corresponded to, gas channel supporting bar mould is placed, until around the less y connection Foil windings of complete the number of turns, and
First cut the less y connection foils of the number of turns, be fixed temporarily this tail head, followed by around the more d connections foil of complete the number of turns around
Group cuts the more d connection foils of the number of turns, and respective terminal of finally burn-oning loads onto cast external mold, carries out vacuum pouring, system
Winding is poured into a mould at the different radial transformer with split winding of low pressure joint group.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (4)
1. foil winding is poured into a mould in a kind of radial division adapting to different connections, which is characterized in that low pressure winding is intersected by four sections
Arrange the Foil winding of segmentation（11、12、21、22）And heat dissipation air flue（4）Composition, per corresponding two Foil windings（11 and 12,
21 and 22）Connect the radial division winding of each self-forming one, two pairs of Foil windings being correspondingly connected with（11 and 12,21 and 22）Between
It is each provided with a transition foil respectively（2、3）, four terminals of each phase low pressure winding（a1、x1、a2、x2 ）Draw in upper end
Go out, it is integral that entire low pressure winding carries out vacuum pouring.
2. foil winding is poured into a mould in a kind of radial division adapting to different connections according to claim 1, which is characterized in that two
Block transition foil（2、 3）Setting structure be, it is each division winding total number of turns half at cut after, subsequent foil will be cut
The wide position of a foil is moved in left or right side forward, then by the transition foil of a same thickness, be welded on subsequent foil to
After preceding movement between former foil interval apart, this spacing distance is exactly the width of transition foil, that is, is segmented foil up and down
Spacing distance between winding.
3. foil winding is poured into a mould in a kind of radial division adapting to different connections according to claim 1, which is characterized in that institute
State four terminals of each phase low pressure winding（a1、x1、a2、x2）Sectional position be arranged as being poised for battle two-by-two it is square matrix-shaped.
4. foil winding is poured into a mould in a kind of radial division adapting to different connections according to claim 1, which is characterized in that institute
State heat dissipation air flue（4）It is provided at the number of turns half inside low pressure division winding, is set according to the requirement of winding temperature rise limit value
The size for the ventilation and heat air flue set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820570691.2U CN207993638U (en) | 2018-04-20 | 2018-04-20 | A kind of radial division cast foil winding adapting to different connections |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820570691.2U CN207993638U (en) | 2018-04-20 | 2018-04-20 | A kind of radial division cast foil winding adapting to different connections |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207993638U true CN207993638U (en) | 2018-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820570691.2U Expired - Fee Related CN207993638U (en) | 2018-04-20 | 2018-04-20 | A kind of radial division cast foil winding adapting to different connections |
Country Status (1)
| Country | Link |
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| CN (1) | CN207993638U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335873A (en) * | 2018-04-20 | 2018-07-27 | 江西特种变压器厂 | A kind of radial division cast foil winding adapting to different connections and its manufacturing method |
-
2018
- 2018-04-20 CN CN201820570691.2U patent/CN207993638U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108335873A (en) * | 2018-04-20 | 2018-07-27 | 江西特种变压器厂 | A kind of radial division cast foil winding adapting to different connections and its manufacturing method |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181019 |
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| CF01 | Termination of patent right due to non-payment of annual fee |