CN202454437U - Dry type transformer for pouring high-voltage coil and low-voltage coil together - Google Patents
Dry type transformer for pouring high-voltage coil and low-voltage coil together Download PDFInfo
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- CN202454437U CN202454437U CN2012200530428U CN201220053042U CN202454437U CN 202454437 U CN202454437 U CN 202454437U CN 2012200530428 U CN2012200530428 U CN 2012200530428U CN 201220053042 U CN201220053042 U CN 201220053042U CN 202454437 U CN202454437 U CN 202454437U
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Abstract
The utility model discloses a dry type transformer for pouring a high-voltage coil and a low-voltage coil together. The transformer comprises a high-voltage coil and a low-voltage coil of the dry type transformer, an air flue between the high-voltage coil and the low-voltage coil, and an insulation radiating layer, wherein the high-voltage coil and the low-voltage coil are formed by once pouring, the insulation radiating layer is distributed between the high-voltage coil and the low-voltage coil, and the air flue is distributed in the insulation radiating layer. According to the utility model, the compression strength of the dry type transformer is ensured, and the contour dimension of the transformer is greatly reduced so as to meet dimensional requirements for installation of the dry type transformer.
Description
Technical field
The utility model relates to transformer manufacture technology, relates generally to the low capacity high-voltage coil and low-voltage coil and is the used dry-type transformer of wire wound.
Background technology
The used dry-type transformer of domestic production at present, high-voltage coil and low-voltage coil all is the coiling mould of making respectively separately, separately coiling; Cast separately, and house transformer generally all is to be placed in the high-voltage board, because place and cost are limit; High-voltage board can not be done too greatly, general width all at 800mm between the 1000mm, remove the thickness of high-voltage board wall and the thickness of doorframe; The width that can get into the transformer of high-voltage board can only be at 650mm between the 850mm, and considers the insulation distance between charged body of transformer and the high-voltage board internal part, and this size also will reduce; And transformer will guarantee between corresponding capacity and the high-low pressure, high-low pressure over the ground between insulation distance, its overall dimension of traditional transformer can not further reduce again, some producer is in order to reduce the overall dimension of transformer; Tend to sacrifice some key parameters of transformer,, will cause the industrial frequency withstand voltage of transformer defective but dwindle insulation distance such as dwindling insulation distance; Such as 10kV dry-type transformer industrial frequency withstand voltage standard is 35kV; After dwindling insulation distance, withstand voltagely just can only reach between 25kV～28kV, thereby hide some dangers for for the later safe operation of used dry-type transformer.
High-voltage coil and low-voltage coil is divided into two parts simultaneously; Bring difficulty also can for the work of assembling transformer: because the house transformer volume is less; Concentricity requirement to high-voltage coil and low-voltage coil during assembling is very tight, does not note slightly just causing the space length between the high-voltage coil and low-voltage coil inhomogeneous easily, and withstand voltage level also just significantly descends; If dispatch from the factory like this, just can not guarantee the safety of supplying power.
The utility model content
The utility model is to the above-mentioned existing existing problem of used dry-type transformer; And the used dry-type transformer that the high-voltage coil and low-voltage coil that a kind of new structure is provided is poured into a mould together; This structure can guarantee that high-voltage coil and low-voltage coil is concentric through mould; And the cooling system that designs between the high-voltage coil and low-voltage coil can guarantee that the temperature rise of transformer remains in the scope of design permission, only needs during assembling be placed in coil on the iron core, just can guarantee withstand voltage being up to state standards; Reduced by a cover high-tension winding mould simultaneously, practiced thrift cost, thereby improved the market competitiveness of enterprise.
In order to achieve the above object, the utility model adopts following technical scheme:
The used dry-type transformer that a kind of high-voltage coil and low-voltage coil is poured into a mould together; Said transformer comprises air flue between low-voltage coil of dry type transformer, high-tension coil and the high-voltage coil and low-voltage coil; Said transformer also comprises the insulating radiation layer; Said low-voltage coil and high-tension coil once-cast are shaped, and said insulating radiation layer is distributed between low-voltage coil and the high-tension coil, and said air flue is distributed in the insulating radiation layer.
In the preferred embodiment of the utility model, said insulating radiation layer comprises the first grid layer of cloth, the second grid layer of cloth, polyimide film layer, the 3rd grid layer of cloth from inside to outside successively.
Further, the thickness of the said first grid layer of cloth, the second grid layer of cloth and the 3rd grid layer of cloth all is 2.4mm.
Further, said air flue comprises first air flue and second air flue, and said first air flue is distributed between the first grid layer of cloth and the second grid layer of cloth, and said second air flue is distributed in the 3rd grid layer of cloth outside.
Further again, said first air flue and second air flue distribute even apart from distributing along the first grid layer of cloth and the 3rd grid layer of cloth.
The utility model that obtains according to such scheme adopts special-purpose mould in the transformer coiling operation, can disposable coiling low-voltage coil and high-tension coil; The operation that high-voltage coil and low-voltage coil is adorned mould, cast, the demoulding has respectively been saved in cast together again, has saved manufacturing time; Reduced workload; Can reduce the workload of assembling again, the volume of finished product is dwindled greatly, improve finished product again greatly and once inspected qualification rate by ready samples.
Description of drawings
Further specify the utility model below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the coil structure of the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, the used dry-type transformer that the high-voltage coil and low-voltage coil that the utility model provides is poured into a mould together, the overall structure of this transformer and existing transformer ' s type seemingly comprise air flue 300 between low-voltage coil 100, high-tension coil 200 and the high-voltage coil and low-voltage coil.
The structure that between the utility model mesolow coil 100, high-tension coil 200 and air flue 300, adopts once-cast to be shaped.Simultaneously between low-voltage coil 100 and high-tension coil 200, be provided with insulating radiation layer 400, simultaneously air flue 300 be distributed in the insulating radiation layer.Can guarantee that through this insulating radiation layer 400 temperature rise of transformer remains in the scope of design permission.Through this structure, the utility model only needs to be placed in enterprising luggage unshakable in one's determination to coil when assembling joins, and just can guarantee withstand voltage being up to state standards; Reduced by a cover high-tension winding mould simultaneously, practiced thrift cost.
The insulating radiation layer 400 that adopts in the utility model comprises the first grid layer of cloth 401, the second grid layer of cloth 402, polyimide film layer 403, the 3rd grid layer of cloth 404.
The first grid layer of cloth 401 is distributed in low-voltage coil 100 outsides; The second grid layer of cloth 402 distributes on the first grid layer of cloth 401; Polyimide film layer 403 is distributed on the second grid layer of cloth 402; The 3rd grid layer of cloth 404 is distributed on the polyimide film layer 403, and 200 of high-tension coils are wound on the 3rd grid layer of cloth 404.
In order to reach better heat radiating effect, the utility model adopts the structure of inside and outside double air passage, and promptly air flue 300 is formed with second air flue 302 that is positioned at the outside by being positioned at the first inboard air flue 301.Wherein first air flue 301 is evenly distributed between the first grid layer of cloth 401 and the second grid layer of cloth 402, and second air flue 302 is evenly distributed between the 3rd grid layer of cloth 404 and the high-tension coil 200.
Based on such scheme, the practical implementation of the utility model is following:
As shown in Figure 1, at first after low-voltage coil 100 winds, form the first grid layer of cloth 401 around the thick grid cloth of last layer 2.4mm at the outer of low-voltage coil;
Evenly put the air flue rod of processing with polyformaldehyde in the outside of the first grid layer of cloth 401, this air flue rod is used to form first air flue 301, behind cast cured explosive, extracts the air flue rod out and just forms internal layer heat radiation air flue 301, and the particular location of air flue rod is fixed by the mould plate washer;
Outside the air flue rod, form the second grid layer of cloth 402 around one deck 2.4mm grid cloth; Form polyimide film layer 403 around one deck polyimide film again; And then form the 3rd grid layer of cloth 404 around one deck 2.4mm grid cloth, constitute the insulating cylinder between high-low pressure by 2 layers of grid cloth and one deck polyimide film like this;
Evenly put the air flue rod in the 3rd grid layer of cloth 404 outsides again, this air flue rod is used to form second air flue 302, behind cast cured explosive, extracts the air flue rod out and just forms outer heat radiation air flue 302, and air flue rod particular location is fixed by the mould plate washer;
Then around high-tension coil 200, whole coiling process just can have been accomplished.
Through the cast operation, just can form high-low pressure integrated coil, integral body is put into when carrying out the transformer suit; Adjust relative position between the three-phase coil, put cushion block, briquetting well, the tight good nail of pressing; Manufacture process after the high-low pressure terminal is carried out and finish, so also can remove adjustment from, simplified manufacture craft position between the high-voltage coil and low-voltage coil; Improve rate of finished products, reduced workload, improved efficient.
The utility model is in practical application; The overall dimension of conventional SC10-30/10 is 660mm * 600mm * 750mm; After using the design of new construction, the overall dimension of SC10-30/10 becomes 600mm * 500mm * 720mm, can put in the high-voltage board fully; Through overtesting, all National standard of parameter of dispatching from the factory of transformer that adopt the utility model scheme to form.
More than show and described the advantage of basic principle, principal character and the utility model of the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection range to be defined by appending claims and equivalent thereof.
Claims (5)
1. used dry-type transformer that high-voltage coil and low-voltage coil is poured into a mould together; Said transformer comprises air flue between low-voltage coil of dry type transformer, high-tension coil and the high-voltage coil and low-voltage coil; It is characterized in that said transformer also comprises the insulating radiation layer, said low-voltage coil and high-tension coil once-cast are shaped; Said insulating radiation layer is distributed between low-voltage coil and the high-tension coil, and said air flue is distributed in the insulating radiation layer.
2. the used dry-type transformer that a kind of high-voltage coil and low-voltage coil according to claim 1 is poured into a mould together is characterized in that, said insulating radiation layer comprises the first grid layer of cloth, the second grid layer of cloth, polyimide film layer, the 3rd grid layer of cloth from inside to outside successively.
3. the used dry-type transformer that a kind of high-voltage coil and low-voltage coil according to claim 2 is poured into a mould together is characterized in that, the thickness of the said first grid layer of cloth, the second grid layer of cloth and the 3rd grid layer of cloth all is 2.4mm.
4. the used dry-type transformer that a kind of high-voltage coil and low-voltage coil according to claim 1 and 2 is poured into a mould together; It is characterized in that; Said air flue comprises first air flue and second air flue; Said first air flue is distributed between the first grid layer of cloth and the second grid layer of cloth, and said second air flue is distributed in the 3rd grid layer of cloth outside.
5. the used dry-type transformer that a kind of high-voltage coil and low-voltage coil according to claim 4 is poured into a mould together is characterized in that, said first air flue and second air flue distribute even apart from distributing along the first grid layer of cloth and the 3rd grid layer of cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200530428U CN202454437U (en) | 2012-02-17 | 2012-02-17 | Dry type transformer for pouring high-voltage coil and low-voltage coil together |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200530428U CN202454437U (en) | 2012-02-17 | 2012-02-17 | Dry type transformer for pouring high-voltage coil and low-voltage coil together |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202454437U true CN202454437U (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200530428U Expired - Fee Related CN202454437U (en) | 2012-02-17 | 2012-02-17 | Dry type transformer for pouring high-voltage coil and low-voltage coil together |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202454437U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103714967A (en) * | 2013-12-30 | 2014-04-09 | 伊戈尔电气股份有限公司 | Overall pouring method of epoxy resin insulating transformer coil |
| CN106024305A (en) * | 2016-05-23 | 2016-10-12 | 江苏瑞恩电气股份有限公司 | Dry type transformer with radiating apparatus, and control system for dry type transformer |
| CN113963947A (en) * | 2021-11-10 | 2022-01-21 | 山东电工电气集团智能电气有限公司 | Mold for coil casting, casting method and isolation transformer winding structure |
-
2012
- 2012-02-17 CN CN2012200530428U patent/CN202454437U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103714967A (en) * | 2013-12-30 | 2014-04-09 | 伊戈尔电气股份有限公司 | Overall pouring method of epoxy resin insulating transformer coil |
| CN103714967B (en) * | 2013-12-30 | 2016-03-16 | 伊戈尔电气股份有限公司 | Epoxy resins insulation transformer coil integral pouring procedure |
| CN106024305A (en) * | 2016-05-23 | 2016-10-12 | 江苏瑞恩电气股份有限公司 | Dry type transformer with radiating apparatus, and control system for dry type transformer |
| CN106024305B (en) * | 2016-05-23 | 2018-01-02 | 江苏瑞恩电气股份有限公司 | A kind of dry-type transformer and its control system with heat abstractor |
| CN113963947A (en) * | 2021-11-10 | 2022-01-21 | 山东电工电气集团智能电气有限公司 | Mold for coil casting, casting method and isolation transformer winding structure |
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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: 20120926 Termination date: 20160217 |