CN206628348U - A kind of foil cast winding of unilateral four terminals of axial split - Google Patents
A kind of foil cast winding of unilateral four terminals of axial split Download PDFInfo
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- CN206628348U CN206628348U CN201720287805.8U CN201720287805U CN206628348U CN 206628348 U CN206628348 U CN 206628348U CN 201720287805 U CN201720287805 U CN 201720287805U CN 206628348 U CN206628348 U CN 206628348U
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- winding
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- foil
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Abstract
The utility model discloses a kind of foil of unilateral four terminals of axial split to pour into a mould winding, winding includes two pairs of totally four shaping terminals, locating piece, upper and lower two groups of copper/aluminium foils and spacer blocks, poured into a mould in a vacuum with epoxy resin again, and form radiating air flue, two axial splits pour into a mould winding to composition around integral low-voltage foil type up and down, and two pairs of shaping terminals are two division respective terminals of winding up and down respectively.The utility model solves the problems, such as every four terminals in phase low pressure winding side, and it is respectively y connections and d connections particularly to solve two division coils, and d connections are the y connection numbers of turnTimes, place air flue mould and the nonsynchronous problem of the number of turn be present, and it is compact-sized, small volume, it is easy to step down side lead-out wire, is adapted to the transformer manufacturing of the low pressure division equidirectional outlet of coil requirement homonymy, especially adapts to the bridge type rectifier transformer manufacture of cophase counter parallel connection.
Description
Technical field
It the utility model is related to the manufacture of epoxy cast transformer, and in particular to a kind of unilateral four terminals of axial split
Foil pours into a mould winding.
Background technology
In conventional Three-Phase Distribution Transformers, per mutually there was only a low pressure winding, leading-out terminal subnumber is 2.Specific use
Transformer require that its low pressure winding is made up of two windings, for example, the photovoltaic generation transformation with two groups of independent input windings
Device, connection are Dy11 y11 or Dy11-Dy11, and low pressure has the winding of two groups of y connections, every mutually to have two low pressure windings, every mutually to go out
Line end subnumber is four.And for example, there are six pulse wave above rectifier transformers of two groups of low pressure windings, connection be Dy11-Dy11 or
Dd0- Dd0, its low pressure winding are axial splits into two groups of connections（Y or d）Winding, per mutually there is two low pressure windings, it is per phase
Leading-out terminal subnumber is four, and requires to arrange in the same side of winding.See Fig. 1 terminals a1, x1, a2, x2.
High-power bridge type rectifier transformer particularly more than 12 pulsating wave, in order to overcome because of rectifier transformer secondary electric current
It is very big, cause secondary lead wires reactance and reactance pressure drop to increase, power factor reduces, and may cause around lead and outlet terminal
Generation hot-spot phenomenon, and the electric current distribution energy imbalance between rectifier cell, the method for generally use cophase counter parallel connection,
It is required that low pressure winding axial split, into after two windings, each winding that divides must also separate two identical branch roads again, quite
There are four division windings in low pressure winding, now, leading-out terminal subnumber increases to 8, is arranged respectively in upper and lower both sides, goes out per side
Line end subnumber is also four, sees Fig. 2 terminals a11, x11, a21, x21 and terminal a12, x12, a22, x22.
The high pressure winding of above-mentioned transformer generally all carries shunting voltage regulating, the on-load voltage regulation of even more taps.Based on height
The reason for pressing side pin configuration and reducing transformer manufacturing cost, high pressure winding are generally exterior loop, and low pressure winding is generally interior
Coil.The particularly transformer of epoxy casting, high-pressure side carries shunting voltage regulating or on-load voltage regulation, such as using high pressure winding as interior lines
Circle, the requirement of the deriving structure and insulation distance of tap is, it is necessary in the radial volume occupied very big space, cause transformer
Increase a lot, cause manufacturing cost increase much and loss is exceeded, thus, for the transformer of epoxy casting, high pressure winding
It can be arranged as exterior loop, low pressure winding is then only interior loop arrangement.
When low pressure winding makees interior loop arrangement, four leading-out terminal subnumbers are in the same side outlet of winding, using foil material
Material, this poses the foil of unilateral four terminals to pour into a mould winding manufacturing issue.Eight leading-out terminal subnumbers in winding up and down two
During the outlet of side, it was also proposed that the foil cast winding manufacturing issue of unilateral four terminals.
Therefore, there is the low-voltage foil type cast winding of four terminals per side, be the key of such Transformer Manufacturing Technology.
Some manufacturers are using the radial division arrangement of low-voltage foil type, by the method for stacking above and below copper/aluminium foil and around four
Terminal, which happens frequently, carrys out outlet, though every four terminals in phase low pressure winding side can be solved the problems, such as, the stacking of terminal is used
Line copper bar gross thickness is excessive, has tied up the space in external garden unshakable in one's determination, reduces the fill factor in external garden unshakable in one's determination, forces and have to
Amplify core-diameter, so cause manufacturing cost to increase.
The content of the invention
Then, the purpose of this utility model just is the foil cast for providing a kind of unilateral four terminals of axial split
Winding, every four terminals in phase low pressure winding side can be solved the problems, such as by developing both, and not amplify a kind of axle of core-diameter
Winding is poured into a mould to the low pressure interior loop foil of unilateral four terminals of division.
Simultaneously, it is necessary to solve following technical problem.As coiling Fig. 1（Fig. 2 is similarly）Two division windings have the identical number of turn
Division winding when, i.e., two division windings have identical connection, are d or are y, and during two division winding techniques, the number of turn can
Synchronously complete.But when two division windings have the division winding of the different numbers of turn, i.e., two division windings have what is differed
Connection, one is d connections, and one is y connections, and d connections are the y connection numbers of turnTimes, and when coiling is to the half number of turn, need
Ventilating air passage is set, so, while coiling, it there is the problem of number of turn can not synchronously complete, and the pass that the technology solves
Key.
One of technical solutions of the utility model：
A kind of low pressure interior loop foil cast winding of unilateral four terminals of axial split, winding include two pairs totally four into
Type terminal, locating piece, upper and lower two groups of copper/aluminium foils and spacer block, then poured into a mould in a vacuum with epoxy resin, and form radiating
Air flue, form two axial splits up and down and pour into a mould winding around integral low-voltage foil type, two pairs of shaping terminals are up and down respectively
The two division respective terminals of winding.
Further, two pairs are molded terminal or so placement side by side, are isolated by locating piece and positioned, poured in overall low-voltage foil type
Same direction of the same side of winding or so is noted to draw side by side.
Further, upper and lower two groups of copper/aluminium foils be respectively up and down two division the respective conductors of winding, up and down side by side place, lead to
Cross spacer block isolation to position, semi-abruption electric winding and lower semi-abruption electric winding on composition.
Further, upper and lower two divisions winding, according to the requirement of winding temperature rise limit value, sets ventilation and heat at the half number of turn
Air flue.
The two of technical solutions of the utility model：
A kind of manufacture method of the low pressure interior loop foil cast winding of axial split one side outlet, it is characterised in that around
During coil processed, winding mould is horizontal placement, on the mould of coiling, first places the glass cross of one layer of pre-soaked resin
Lattice, the shaping terminal being respectively welded in the two division windings up and down of copper/aluminium foil is fixed on glass fiber grid side by side, together
When placement positioning block are split by pitch of the laps parallel coiling simultaneously, and places spacer block to upper and lower two for shaping terminal positioning, upper and lower two component
Group copper/aluminium foil positioning, layer or turn-to-turn place insulating barrier, place air flue mould during around the half number of turn, after complete welding it is respective into
Type terminal, then the glass fiber grid of one layer of pre-soaked resin is placed in appearance, casting epoxy resin, forms two divisions in a vacuum
The low-voltage foil type cast winding that winding is integral and the same direction of the same side is lifted one's head.
Further, when the number of turn difference of upper and lower two division windings, two groups of copper/aluminium foils up and down are respectively y and d connections
When, d connections are the y connection numbers of turnTimes, place air flue mould and the nonsynchronous phenomenon of the number of turn be present, should be by the divisural line of the first half
It is the few y connections position of the number of turn to enclose copper/aluminium foil, and division coil copper/aluminium foil of lower half is the d connections position more than the number of turn；When upper
When lower two groups of copper/aluminium foils are around to the half y connection numbers of turn, the half length of whole air flue mould is put into the divisural line of the first half
Enclose in copper/aluminium foil, two division coils continue parallel coiling simultaneously；
When two bronze medals/aluminium foil is around to the half d connection numbers of turn, one in first half division coil copper/aluminium foil 4 will be put into
Half length air flue mould is driven into division coil copper/aluminium foil 5 of lower half, and whole air flue mould then fully enters two division coils,
Until around the complete two division respective numbers of turn of coil, respective shaping terminal is respectively welded.
The utility model solves the problems, such as every four terminals in phase low pressure winding side, particularly solves two division coils
Respectively y connections and d connections, d connections are the y connection numbers of turnTimes, place air flue mould and the nonsynchronous problem of the number of turn be present, and
It is compact-sized, small volume, it is easy to step down side lead-out wire, is adapted to the low pressure division equidirectional outlet of coil requirement homonymy
Transformer manufacturing, especially adapt to the bridge type rectifier transformer manufacture of cophase counter parallel connection.
Brief description of the drawings
Fig. 1 is the transformer principle figure that the low pressure relevant with the utility model axially splits into two groups of windings；
Fig. 2 is the transformer principle figure that the low pressure relevant with the utility model axially splits into four windings；
Fig. 3 is that a kind of low pressure interior loop foil cast winding construction of axial split one side outlet of the utility model is faced
Figure；
Fig. 4 is a kind of low pressure interior loop foil cast winding construction side view of axial split one side outlet of the utility model
Figure；
Fig. 5 is that a kind of low pressure interior loop foil cast winding construction of axial split one side outlet of the utility model is overlooked
Figure；
Fig. 6 is a kind of low pressure interior loop foil cast winding of axial split one side outlet of the utility model around to signal
Figure；
Fig. 7 is horizontal when being a kind of low pressure interior loop foil cast winding technique of axial split one side outlet of the utility model
State places schematic diagram.
In figure：Terminal 1 is molded, is molded terminal 2, locating piece 3, copper/aluminium foil 4, copper/aluminium foil 5, spacer block 6, epoxy resin
7, radiate air flue 8, air flue mould 9.
Embodiment
The utility model can be so that the utility model will be further described, however, this practicality by the following examples
New scope is not limited to following embodiments.
Embodiment 1：
With reference to figure 3 --- 6.Shaping terminal 1 divides to be molded terminal a1, being molded terminal x1, in other embodiments
Shaping terminal a11, shaping terminal x11, shaping terminal a12, shaping terminal x12 can be divided into；Shaping terminal 2, which divides, is
Terminal a2, shaping terminal x2 are molded, shaping terminal a21, shaping outlet x21, shaping can be also divided into other embodiments
Outlet a22, shaping outlet x22.
A kind of low pressure interior loop foil cast winding of unilateral four terminals of axial split, winding include two pairs totally four into
Type terminal a1, shaping terminal x1, shaping terminal a2, shaping terminal x2, locating piece 3, upper and lower two groups of copper/aluminium foils 4,5
With spacer block 6, then poured into a mould in a vacuum with epoxy resin 7, and form radiating air flue 8, formed two axial splits up and down and be coiled into
One overall low-voltage foil type cast winding, two pairs of shaping terminals 1,2 are two division respective terminals of winding up and down respectively.
Two pairs of shaping terminals 1,2 or so are placed side by side, are isolated by locating piece 3 and positioned, poured into a mould in overall low-voltage foil type
Same direction of the same side of winding or so is drawn side by side.
Upper and lower two groups of copper/aluminium foils 4,5 be respectively up and down two division the respective conductors of winding, up and down side by side place, by every
The isolation of block 6 positions, semi-abruption electric winding and lower semi-abruption electric winding on composition.
Upper and lower two divisions winding, according to the requirement of winding temperature rise limit value, the air flue of setting ventilation and heat at the half number of turn
8。
A kind of low pressure interior loop foil cast winding manufacture method of axial split one side outlet, during coiling, coiling
Mould is horizontal placement（See Fig. 7）, on the mould of coiling, the glass fiber grid of one layer of pre-soaked resin is first placed, will be divided
Be not welded with copper/aluminium foil 4, copper/aluminium foil 5 up and down two division windings shaping terminal 1（x1）, shaping terminal 2（x2）And
Row be fixed on glass fiber grid, while placement positioning block 3 to two shaping terminals positioning, two division pitch of the laps simultaneously parallel around
System, and place spacer block 6 and positioned to two bronze medals/aluminium foil, layer or turn-to-turn place insulating barrier, place air flue mould 9 during around the half number of turn, around
The respective shaping terminal 1 of welding after complete（a1）, shaping terminal 2（a2）, then the glass in appearance one layer of pre-soaked resin of placement
Screen grid, casting epoxy resin 7 in a vacuum, form that two division windings are integral and the same direction of the same side is lifted one's head
Low-voltage foil type pours into a mould winding.
When the copper/aluminium foil 4 and copper/aluminium foil 5 are respectively y connections and d connections, d connections are the y connection numbers of turnTimes,
Place air flue mould 9 and the nonsynchronous phenomenon of the number of turn be present, should be the few y connections position of the number of turn by division coil copper/aluminium foil 4 of the first half
Put, division coil copper/aluminium foil 5 of lower half is the d connections position more than the number of turn, when two bronze medals/aluminium foil is around to half y connection circles
During number, the half length of whole air flue mould 9 is put into division coil copper/aluminium foil 4 of the first half, two division coils continue simultaneously
Parallel coiling, when two bronze medals/aluminium foil is around to the half d connection numbers of turn, it will be put into first half division coil copper/aluminium foil 4
Half length air flue mould 9 is driven into division coil copper/aluminium foil 5 of lower half, and whole air flue mould 9 then fully enters two divisural lines
Circle, until around the complete two division respective numbers of turn of coil, respective shaping terminal 1 is respectively welded（a1）, shaping terminal 2
（a2）.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (4)
1. the low pressure interior loop foil cast winding of unilateral four terminals of a kind of axial split, it is characterised in that winding includes two pairs
Totally four shaping terminals, locating piece, upper and lower two groups of copper/aluminium foils and spacer block, then poured into a mould in a vacuum with epoxy resin, and
Radiating air flue is formed, two axial splits up and down is formed and pours into a mould winding, two pairs of shaping terminals point around integral low-voltage foil type
The two division respective terminal of winding above and below not being.
2. a kind of low pressure interior loop foil cast winding of unilateral four terminals of axial split according to claim 1, its
It is characterised by, two pairs are molded terminal or so and place side by side, are isolated by locating piece and positioned, in overall low-voltage foil type cast winding
The same direction of the same side or so draw side by side.
3. a kind of low pressure interior loop foil cast winding of unilateral four terminals of axial split according to claim 1, its
It is characterised by, upper and lower two groups of copper/aluminium foils are the upper and lower two divisions respective conductors of winding respectively, place side by side up and down, pass through spacer block
Isolation positions, semi-abruption electric winding and lower semi-abruption electric winding on composition.
4. a kind of low pressure interior loop foil cast winding of unilateral four terminals of axial split according to claim 1, its
It is characterised by, upper and lower two divisions winding, according to the requirement of winding temperature rise limit value, the gas of setting ventilation and heat at the half number of turn
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720287805.8U CN206628348U (en) | 2017-03-23 | 2017-03-23 | A kind of foil cast winding of unilateral four terminals of axial split |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720287805.8U CN206628348U (en) | 2017-03-23 | 2017-03-23 | A kind of foil cast winding of unilateral four terminals of axial split |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206628348U true CN206628348U (en) | 2017-11-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720287805.8U Expired - Fee Related CN206628348U (en) | 2017-03-23 | 2017-03-23 | A kind of foil cast winding of unilateral four terminals of axial split |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206628348U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106803456A (en) * | 2017-03-23 | 2017-06-06 | 江西特种变压器厂 | Foil cast winding and its manufacture method of a kind of four terminals of axial split one side |
| CN108878116A (en) * | 2018-06-29 | 2018-11-23 | 常德国力变压器有限公司 | A kind of outlet method and bus connection method of railway transformer winding |
-
2017
- 2017-03-23 CN CN201720287805.8U patent/CN206628348U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106803456A (en) * | 2017-03-23 | 2017-06-06 | 江西特种变压器厂 | Foil cast winding and its manufacture method of a kind of four terminals of axial split one side |
| CN108878116A (en) * | 2018-06-29 | 2018-11-23 | 常德国力变压器有限公司 | A kind of outlet method and bus connection method of railway transformer winding |
| CN108878116B (en) * | 2018-06-29 | 2020-08-18 | 常德国力变压器有限公司 | Wire outgoing method and wire connecting method for railway transformer winding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171110 |