CN203456246U - Integral copper foil coil-structured dry transformer - Google Patents
Integral copper foil coil-structured dry transformer Download PDFInfo
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- CN203456246U CN203456246U CN201320521113.7U CN201320521113U CN203456246U CN 203456246 U CN203456246 U CN 203456246U CN 201320521113 U CN201320521113 U CN 201320521113U CN 203456246 U CN203456246 U CN 203456246U
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Abstract
The utility mode discloses an integral copper foil coil-structured dry transformer, comprising a high-voltage coil, an insulation paper board, an iron core and a low-voltage coil; the insulation paper board is positioned between the high-voltage coil and the low-voltage coil; the high-voltage coil and the low-voltage coil are formed by winding a copper lead adopting a copper foil; the low-voltage coil is sleeved on the iron core; the high-voltage coil, the insulation paper board and the low-voltage coil are integrally formed. According to the integral copper foil coil-structured dry transformer, the direct current loss in a winding can be reduced, the overload capacity of the transformer is increased, the material for the iron core is reduced while the no-load loss of the transformer is reduced, and the noise of the transformer is also reduced.
Description
Technical field
The utility model relates to a kind of transformer, particularly a kind of dry-type transformer of integral type Copper Foil loop construction.
Background technology
Transformer is manufactured according to electromagnetic induction principle.Magnetic energy is the medium of electric energy conversion, and iron core is the magnetic circuit part of transformer, and Main Function is magnetic conduction, and it is mainly to be made by the very high cold-reduced silicon sheet of magnetic permeability.Iron core, when excitation, can produce no-load loss, and the quadergy of absorption system forms no-load current, and iron core will produce temperature rise, and for dry-type transformer, temperature rise meeting unshakable in one's determination affects the temperature rise of low pressure winding.Iron core also can produce noise when excitation.When closing a floodgate, full voltage also can produce magnetizing inrush current.Structure unshakable in one's determination is played a game and is put also and can affect, because iron core is the electrode of a ground connection, core lamination is again capacitive character ground connection.
The no-load performance of transformer core is one of main performance index of transformer.No-load performance comprises no-load loss, no-load current etc.The indices of no-load performance unshakable in one's determination is relevant with core volume, design, manufacture and core material.During transformer work, in iron core, pass through the alternating flux of the sinusoidal variations identical with supply frequency.In electrical steel sheet, by the alternating flux of sinusoidal variations, in silicon steel sheet, there are eddy current loss and magnetic hysteresis loss.No-load loss more than 99% is the loss in lamination.
No-load loss is calculated:
No-load loss=supplementary load loss coefficient * (specific loss+stem of stem and iron yoke and iron yoke weight)
Transformer is a kind of static electrical equipment.Utilize electromagnetic induction principle between two or more coils, a kind of voltage and current of grade is converted to the voltage and current of the another kind of grade of same screen rate, and electric energy transmitting.The circuit part of the coil constitution equipment of transformer itself, it is directly connected with outside electrical network, is most important parts in transformer, often coil than " heart " of making transformer.Coil is the basic element of character of transformer voltage of transformation, and coil is comprised of the different numbers of turn, because the one turn voltage of different coils is the same, therefore, need to make coil have the different numbers of turn, reaches different voltage.Transformer is when operation, and in coil, by electric current, the loss that has a resistance in coil-conductor, can cause the efficiency of generating heat and reducing transformer.Coil is used the metal that conductivity is high to make for this reason, and conventional conductor is copper.
In prior art, the circular copper conductor that coil adopts, volume ratio is larger, and copper material used is many.The space that winding volume occupies is greatly also large, and because coil is enclosed within on core limb, the increase of the volume of coil also causes unshakable in one's determination increase, causes transformer noload losses to increase.
In addition, the cross sectional shape of the high-tension coil of existing transformer and the cross sectional shape of low-voltage coil are mostly circular, and as shown in Figure 1, existing transformer comprises high-tension coil 11, insulating board 12, air flue rod 13, low-voltage coil 14.Because the cross sectional shape of high-tension coil and the cross sectional shape of low-voltage coil are all circular, volume ratio is larger, thereby causes the corresponding increase of core volume of coil inside.Iron core increases, and causes transformer noload losses to increase.
Moreover the existing making of transformer, is that high-voltage coil and low-voltage coil is injected respectively in mould, injects poured with epoxy resin and form in mould.When coil is when being set with, high-tension coil is enclosed within low-voltage coil outside, and in order to be set with conveniently, the Gap-Ratios between high-voltage coil and low-voltage coil is larger.Coil is oversize like this, could not be fine fastening between high-tension coil and low-voltage coil, and when transformer moves, noise can be excessive.
Utility model content
The technical problems to be solved in the utility model is that core volume is large in order to overcome in prior art, no-load loss is large and the defect such as noise is excessive, and a kind of dry-type transformer of integral type Copper Foil loop construction is provided.
The utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of dry-type transformer of integral type Copper Foil loop construction, comprise high-tension coil, insulating board, iron core and low-voltage coil, insulating board is between high-tension coil and low-voltage coil, high-tension coil and low-voltage coil are entwined by copper conductor, described low-voltage coil is enclosed within on described iron core, its feature is, described high-tension coil, described insulating board and described low-voltage coil are one-body molded, and described copper conductor is Copper Foil.
Adopt integrated formed structure, can make high-voltage coil and low-voltage coil tighten together, reduce the noise of transformer.And the volume-diminished of coil, winding volume is little, occupies space little, so also can dwindle volume unshakable in one's determination, also reduced transformer noload losses simultaneously reducing material unshakable in one's determination.
Preferably, the cross sectional shape of described high-tension coil is, the cross sectional shape of the cross sectional shape of described low-voltage coil and described iron core is ellipse.Oval-shaped iron core can be realized the object that improves the alternate space of transformer and device body integral space utilization ratio, the sectional area of oval-shaped iron core and the sectional area of circular iron core is identical and phase spacing same case under, the iron core column centre-to-centre spacing of this oval-shaped iron core will reduce, namely iron core yoke sheet length reduces, and iron circuit shortens.Therefore iron core weight also will reduce, and so just reach the object that reduces iron core weight and reduction no-load loss in lamination material decision and magnetic flux density constant in the situation that, reduce the manufacturing cost of dry-type transformer.
Positive progressive effect of the present utility model is: adopt Copper Foil to replace traditional copper cash, increased the cross-sectional area of wire, reduce the direct current loss in winding, strengthen the overload capability of transformer.With Copper Foil, replace traditional copper cash, dwindled the volume of coil, and then reduce core volume, therefore, reduced transformer noload losses, also reduced the noise of transformer.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing transformer.
Fig. 2 is the structural representation of the dry-type transformer of integral type Copper Foil loop construction of the present utility model.
Embodiment
Lift a preferred embodiment below, and carry out by reference to the accompanying drawings the clearer the utility model that intactly illustrates.
As shown in Figure 2, the dry-type transformer of integral type Copper Foil loop construction of the present utility model comprises high-tension coil 10, insulating board 20, iron core 30 and low-voltage coil 40; Insulating board 20 is between high-tension coil 10 and low-voltage coil 40, high-tension coil 10 and low-voltage coil 40 are entwined by copper conductor, described low-voltage coil 40 is enclosed within on described iron core 30, described high-tension coil 10, described insulating board 20 and described low-voltage coil 40 are one-body molded, and copper conductor is Copper Foil.
Copper conductor adopts Copper Foil to replace traditional copper cash, has increased the cross-sectional area of wire, reduces the direct current loss in winding, strengthens the overload capability of transformer.With Copper Foil, replace traditional copper cash, dwindled the volume of coil, and then reduce core volume, therefore, reduced transformer noload losses, also reduced the noise of transformer.Adopt integrated formed structure, can make high-voltage coil and low-voltage coil tighten together, reduce the noise of transformer.And the volume-diminished of coil, winding volume is little, occupies space little, so also can dwindle volume unshakable in one's determination, also reduced transformer noload losses simultaneously reducing material unshakable in one's determination.
In addition, can also take the cross sectional shape of the cross sectional shape of the cross sectional shape of high-tension coil 10, low-voltage coil 40 and iron core 30 to be all made into ellipse.Oval-shaped iron core can be realized the object that improves the alternate space of transformer and device body integral space utilization ratio, the sectional area of oval-shaped iron core and the sectional area of circular iron core is identical and phase spacing same case under, the iron core column centre-to-centre spacing of this oval-shaped iron core will reduce, namely iron core yoke sheet length reduces, and iron circuit shortens.Therefore iron core weight also will reduce, and so just reach the object that reduces iron core weight and reduction no-load loss in lamination material decision and magnetic flux density constant in the situation that, reduce the manufacturing cost of dry-type transformer.
Although more than described embodiment of the present utility model, it will be understood by those of skill in the art that this only illustrates, protection range of the present utility model is limited by appended claims.Those skilled in the art is not deviating under the prerequisite of principle of the present utility model and essence, can make various changes or modifications to these execution modes, but these changes and modification all fall into protection range of the present utility model.
Claims (2)
1. the dry-type transformer of an integral type Copper Foil loop construction, comprise a high-tension coil, an insulating board, an iron core and a low-voltage coil, described insulating board is between described high-tension coil and described low-voltage coil, described high-tension coil and described low-voltage coil are entwined by copper conductor, described low-voltage coil is enclosed within on described iron core, it is characterized in that: described high-tension coil, described insulating board and described low-voltage coil are one-body molded, described copper conductor is Copper Foil.
2. the dry-type transformer of integral type Copper Foil loop construction as claimed in claim 1, is characterized in that: the cross sectional shape of the cross sectional shape of described high-tension coil, the cross sectional shape of described low-voltage coil and described iron core is ellipse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320521113.7U CN203456246U (en) | 2013-08-23 | 2013-08-23 | Integral copper foil coil-structured dry transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320521113.7U CN203456246U (en) | 2013-08-23 | 2013-08-23 | Integral copper foil coil-structured dry transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203456246U true CN203456246U (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320521113.7U Expired - Fee Related CN203456246U (en) | 2013-08-23 | 2013-08-23 | Integral copper foil coil-structured dry transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203456246U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105551771A (en) * | 2014-10-28 | 2016-05-04 | Abb技术有限公司 | Transformers |
-
2013
- 2013-08-23 CN CN201320521113.7U patent/CN203456246U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105551771A (en) * | 2014-10-28 | 2016-05-04 | Abb技术有限公司 | Transformers |
| CN105551771B (en) * | 2014-10-28 | 2018-10-16 | Abb瑞士股份有限公司 | Transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140226 Termination date: 20170823 |