CN202084398U - Dry type transformer with integrated coil structure - Google Patents
Dry type transformer with integrated coil structure Download PDFInfo
- Publication number
- CN202084398U CN202084398U CN2011201655680U CN201120165568U CN202084398U CN 202084398 U CN202084398 U CN 202084398U CN 2011201655680 U CN2011201655680 U CN 2011201655680U CN 201120165568 U CN201120165568 U CN 201120165568U CN 202084398 U CN202084398 U CN 202084398U
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- coil
- iron core
- transformer
- voltage coil
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Abstract
The utility model discloses a dry type transformer with an integrated coil structure, which comprises a high voltage coil, an insulated paper plate, an iron core and a low voltage coil; the insulated paper plate is arranged between the high voltage coil and the low voltage coil; the low voltage coil is sheathed on the iron core; and the high voltage coil, the insulated paper plate and the low voltage coil are integrally formed. The dry type transformer with the integrated coil structure reduces the idle load loss of the transformer.
Description
Technical field
The utility model relates to a kind of dry-type transformer, particularly a kind of dry-type transformer of integral type loop construction.
Background technology
Transformer is made according to electromagnetic induction principle.Magnetic energy is the media of electric energy conversion, and iron core is the magnetic circuit part of transformer, and main effect is a magnetic conduction, and it is to be made by the very high cold-reduced silicon sheet of magnetic permeability.Iron core can produce no-load loss when excitation, the quadergy of absorption system forms no-load current, and iron core will produce temperature rise, becomes doing, and the temperature rise meeting of iron core influences the temperature rise of low pressure winding.Iron core also can produce noise when excitation, also can produce magnetizing inrush current when full voltage closes a floodgate.The structure of iron core is played a game and is put also and can influence, because iron core is the electrode of a ground connection, core lamination stack is again a capacitive character ground connection.
Transformer is a kind of static electrical equipment, utilizes electromagnetic induction principle between two or more coils, converts a kind of voltage and current of grade to voltage and current with the another kind of grade of screen rate and electric energy transmitting.The circuit part of the coil constitution equipment of transformer itself, it directly is connected with outside electrical network, is most important parts in the transformer, often coil than " heart " of making transformer.Coil is the basic element of character of transformer voltage of transformation, and coil is made up of the different numbers of turn, because every circle voltage of different coils is the same, therefore, need make coil that the different numbers of turn is arranged, and reaches different voltage.Transformer is when operation, and by electric current, the loss that has a resistance in coil-conductor can cause the efficient of generating heat and reducing transformer in the coil.Coil uses the high metal of conductivity to make for this reason, and conductor commonly used is a copper.
And the no-load performance of transformer core is one of main performance index of transformer, and no-load performance comprises no-load loss and no-load current etc.Every index and core volume, design, manufacturing and the core material of iron core no-load performance have relation.During transformer work, pass through the alternating flux of the sinusoidal variations identical in the iron core with the power supply panel rate.In the iron core silicon steel sheet,, eddy current loss and magnetic hysteresis loss are arranged in silicon steel sheet by the alternating flux of sinusoidal variations.No-load loss is the loss in the lamination more than 99%.No-load loss computational process is as follows: no-load loss=supplementary load loss coefficient * (specific loss+stem of stem and iron yoke and iron yoke weight).
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 shape of the shape of high-tension coil and low-voltage coil all is circular, volume ratio is bigger, and used copper material is many.The space that winding volume occupies greatly is also big, because coil is enclosed within on the iron core, the volume increase of coil also causes iron core to increase.High-tension coil and low-voltage coil separate, and are high-tension coil and low-voltage coil are injected respectively in the mould, inject poured with epoxy resin and form in mould.When coil during at suit, high-tension coil is enclosed within the low-voltage coil outside, for suit convenient, gap between high-tension coil and the low-voltage coil is bigger, coil is oversize like this, and it is fine fastening to fail between high-tension coil and the low-voltage coil, and noise can be excessive when transformer moves.
The utility model content
Technical problem to be solved in the utility model provides a kind of dry-type transformer of integral type loop construction, and it has reduced transformer noload losses.
For solveing the technical problem, the utility model provides a kind of dry-type transformer of integral type loop construction, it comprises high-tension coil, insulating board, iron core and low-voltage coil, insulating board is between high-tension coil and low-voltage coil, it is characterized in that, low-voltage coil is enclosed within on the iron core, and high-tension coil, insulating board and low-voltage coil are integrated.
Preferably, the cross sectional shape of the cross sectional shape of the cross sectional shape of described high-tension coil, low-voltage coil and iron core all is oval.
Positive progressive effect of the present utility model is: the material that the dry-type transformer of the utility model integral type loop construction reduces iron core has also reduced transformer noload losses simultaneously.
Description of drawings
Fig. 1 is the structural representation of existing transformer.
Fig. 2 is the structural representation of the dry-type transformer of the utility model integral type loop construction.
Fig. 3 is the front view of the dry-type transformer of the utility model integral type loop construction.
Embodiment
Lift a preferred embodiment below, and come the clearer the utility model that intactly illustrates in conjunction with the accompanying drawings.
As shown in Figures 2 and 3, the dry-type transformer of the utility model integral type loop construction 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, and low-voltage coil 40 is enclosed within on the iron core 30; The cross sectional shape of the cross sectional shape of high-tension coil 10 and low-voltage coil 40 all is oval; High-tension coil 10, insulating board 20 and low-voltage coil 40 are integrated.The cross sectional shape of iron core 30 is oval.
The utility model is put into same mould with high-tension coil and low-voltage coil, and the injection ring epoxy resins formula coil that pours into an integrated entity can make high-tension coil and low-voltage coil tighten together like this in mould, reduces noise of transformer.And the volume-diminished of coil, winding volume is little, and it is little to occupy the space, so also can dwindle the volume of iron core, has also reduced transformer noload losses simultaneously at the material that reduces iron core.
Oval-shaped iron core can realize improving the purpose of alternate space of transformer and device body overall space utilance, at the sectional area of the sectional area of oval-shaped iron core and circular iron core under the identical and phase spacing same case, the iron core column centre-to-centre spacing of this oval-shaped iron core will reduce, just iron core yoke leaf length reduces, and iron circuit shortens.Therefore iron core weight also will reduce, and so just reach the purpose that reduces iron core weight and reduce no-load loss under the situation that the lamination material is determined and magnetic flux density is constant, reduce the manufacturing cost of dry-type transformer.
With SCB10-1000KVA/10KV type transformer is example, the no-load loss of national Specification transformer is 1791W, through improvement of the present utility model, original round coil is modified into oval coil, can be reduced to 1592W to no-load loss and reach the SCB11 serial transformer.The utility model is given the volume of coil and iron core and has been dwindled, and original oval coil is made into the integral type coil, and round cross section iron core is changed into the iron core of elliptic cross-section, has dwindled the volume of transformer like this, has saved the material of transformer.It is little to release winding volume according to the formula on background technology, and it is little to occupy the space, has also reduced transformer noload losses simultaneously at the material that reduces iron core like this, has reduced noise of transformer.
Though more than described embodiment of the present utility model, but those skilled in the art is to be understood that, these only illustrate, and under the prerequisite that does not deviate from principle of the present utility model and essence, can make numerous variations or modification to these execution modes.Therefore, protection range of the present utility model is limited by appended claims.
Claims (2)
1. the dry-type transformer of an integral type loop construction, it comprises high-tension coil, insulating board, iron core and low-voltage coil, and insulating board is characterized in that between high-tension coil and low-voltage coil, low-voltage coil is enclosed within on the iron core, and high-tension coil, insulating board and low-voltage coil are integrated.
2. the dry-type transformer of integral type 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 low-voltage coil and iron core all is oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201655680U CN202084398U (en) | 2011-05-23 | 2011-05-23 | Dry type transformer with integrated coil structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201655680U CN202084398U (en) | 2011-05-23 | 2011-05-23 | Dry type transformer with integrated coil structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202084398U true CN202084398U (en) | 2011-12-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201655680U Expired - Fee Related CN202084398U (en) | 2011-05-23 | 2011-05-23 | Dry type transformer with integrated coil structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202084398U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800466A (en) * | 2011-05-23 | 2012-11-28 | 中变集团上海变压器有限公司 | Dry-type transformer with integrated coil structure |
| CN110391082A (en) * | 2019-08-13 | 2019-10-29 | 中变集团上海变压器有限公司 | One kind is dry to get higher crimping ring mould |
-
2011
- 2011-05-23 CN CN2011201655680U patent/CN202084398U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800466A (en) * | 2011-05-23 | 2012-11-28 | 中变集团上海变压器有限公司 | Dry-type transformer with integrated coil structure |
| CN110391082A (en) * | 2019-08-13 | 2019-10-29 | 中变集团上海变压器有限公司 | One kind is dry to get higher crimping ring mould |
| CN110391082B (en) * | 2019-08-13 | 2024-03-29 | 中变集团上海变压器有限公司 | Dry-change high-voltage coil die |
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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 |
Granted publication date: 20111221 Termination date: 20160523 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |