CN202307457U - Dual-ratio transformer - Google Patents

Dual-ratio transformer Download PDF

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Publication number
CN202307457U
CN202307457U CN2011203577879U CN201120357787U CN202307457U CN 202307457 U CN202307457 U CN 202307457U CN 2011203577879 U CN2011203577879 U CN 2011203577879U CN 201120357787 U CN201120357787 U CN 201120357787U CN 202307457 U CN202307457 U CN 202307457U
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CN
China
Prior art keywords
transformer
winding
dual
phase
voltage
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Expired - Fee Related
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CN2011203577879U
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Chinese (zh)
Inventor
严正斌
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Jiangxi Rare Earth and Rare Metals Tungsten Group Holding Co Ltd
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Jiangxi Rare Earth and Rare Metals Tungsten Group Holding Co Ltd
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Priority to CN2011203577879U priority Critical patent/CN202307457U/en
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Publication of CN202307457U publication Critical patent/CN202307457U/en
Anticipated expiration legal-status Critical
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Abstract

The utility model relates to the field of transformer design, and specifically relates to a dual-ratio transformer. The dual-ratio transformer comprises a high-voltage winding, a low-voltage winding and an iron core, wherein each phase of winding coil of the low-voltage winding is divided into two sections (same in structure and winding direction) from the middle of the winding coil, each phase of winding coil has four endpoints, and connecting lines respectively extend from the four endpoints to a shell of the transformer. The dual-ratio transformer provided by the utility model solves the problem that the existing transformer can not realize the switching among three kinds of voltage levels through using a simple method, therefore, the dual-ratio transformer is economical, simple and practical; and the dual-ratio transformer is not only applicable to the national voltage standards of China, but also can be generalized and applicable to the switching among three kinds of voltage levels in the national voltage standards of other countries.

Description

Dual-ratio transformer
Technical field
The utility model relates to the design of transformer field, specifically, relates to a kind of dual-ratio transformer.
Background technology
From national standard and enterprise product catalogue, can learn; The two-winding transformer that uses at present all is the transformer that has only a kind of fixedly no-load voltage ratio; Like 10/6.3 KV or 10/3.15 KV transformer etc., promptly high pressure---have only a kind of fixedly no-load voltage ratio between the low pressure, the shortcoming of such transformer is; Can only be applicable to two kinds of conversion between the electric pressure, can't realize the switching between three kinds of electric pressures through straightforward procedure.When having high voltage supply electric pressure network such as 35KV, 10KV, 6.3 KV, 3.15 KV simultaneously like enterprise, just can't realize between 35/6.3KV and the 35/3.15KV exchange use between switching each other and 10/6.3KV and 10/3.15 KV.
Therefore, be necessary to design a kind of dual-ratio transformer, can realize three kinds of switchings between the voltage; Promptly under the constant situation of high pressure,, can change the output voltage values of low-pressure end through simple method; In the same way, be not only applicable to meet the switching between several kinds of voltages of China's national standard, be applicable to other countries too; Only be to import, the difference of output end voltage, these can both be realized through the specification of simple change coil.  
The utility model content
The purpose of the utility model is to overcome the deficiency of prior art, and a kind of dual-ratio transformer is provided.
In order to realize the purpose of the utility model, the technical scheme that the utility model adopts is:
A kind of dual-ratio transformer; Comprise the high pressure winding; Low pressure winding, iron core, the winding coil of said each phase of low pressure winding all therefrom portion separately be divided into structure equate, around to identical two sections; The winding coil of each phase all has four end points, draws the connecting line that extends to transformer case respectively from four end points.
Two sections of said each phase winding coil series connection parallel connection, each mutually each end points of an end of the same name connect, another each end points of end of the same name constitutes the star winding as low-voltage output.
Two sections series connection parallel connection of said each phase winding coil respectively connects mutually successively from beginning to end, and each end points of an end of the same name of each phase constitutes delta windings as low-voltage output.
The beneficial effect of the utility model is:
1. under the constant situation of high-pressure side voltage,, can change the output voltage values of low-pressure end, solve current transformer and can't realize the switching problem between three kinds of electric pressures through straightforward procedure through simple method, economical and practical, simple and practical;
2. when making transformer, transformer core material, size, processing technology etc. need not change; Transformer case, cooling system are constant; Can be oil immersed type energy-economic transformer or dry type energy-economic transformer; Can be common transformer or mining transformer; The low voltage winding in transformers that this method is produced can be connected into star, also can be connected into triangle, therefore can realize the transformer of any mode of connection during fabrication;
3. not only be applicable to China country voltage standard, can be applicable to the switching between the following three kinds of electric pressures of other countries' voltage standard equally in the same way.
Description of drawings
Fig. 1 is the structure diagram of the winding coil of each phase of the utility model dual-ratio transformer low pressure winding.
Fig. 2 is the structural representation of the embodiment one of the utility model.
Fig. 3 is the structural representation of the embodiment two of the utility model.
Fig. 4 is the structural representation of the embodiment three of the utility model.
Fig. 5 is the structural representation of the embodiment four of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified:
Below each embodiment, equal data instances to choose in the 35/6.3KV in China's transformer standard, 35/3.15KV, 10/6.3 KV, four kinds of specifications of 10/3.15 KV is explained the content of the utility model, high-pressure side voltage is 35KV or 10KV.
Embodiment one: referring to Fig. 1, and Fig. 2.
A kind of dual-ratio transformer; Comprise the high pressure winding; Low pressure winding, iron core, the winding coil of said each phase of low pressure winding all therefrom portion separately be divided into structure equate, around to identical two sections; The winding coil of each phase all has four end points, draws the connecting line that extends to transformer case respectively from four end points.
Fig. 1 is the structure diagram of the winding coil of each phase of the utility model low pressure winding, and other structures are all not shown.
Among Fig. 1, A, B, three groups of coils of C are the coil that output voltage is 6.3KV, and each winding coil is divided into complete two equal segments from the centre.
Wherein:
The number of turn between A1, the A2 is identical with the number of turn between A3, the A4, winding method, around to equal unanimity.
The number of turn between B1, the B2 is identical with the number of turn between B3, the B4, winding method, around to equal unanimity.
The number of turn between C1, the C2 is identical with the number of turn between C3, the C4, winding method, around to equal unanimity.
A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4 all draw the connecting line that extends to transformer case, are convenient to carry out various connections.
Two sections series connection of said each phase winding coil, each is each end points connection of an end of the same name mutually, and another each end points of end of the same name constitutes the star winding as low-voltage output.
In the present embodiment, A2 links to each other with A3, and B2 links to each other with B3, and C2 links to each other with C3, forms the low pressure 6.3KV coil of 35/6.3KV, 10/6.3KV transformer; A1, B1, C1 do the three-phase low-voltage output of 35/6.3KV, 10/6.3KV transformer; A4, B4, C4 directly link to each other; Above-mentioned method of attachment is realized through the connection facility of change over switch or binding post or similar functions in the transformer outside.
The transformer device structure of present embodiment is identical with 35/6.3KV of the prior art, 10/6.3KV transformer principle in essence.
Embodiment two: referring to Fig. 3.
Present embodiment and embodiment one are basic identical, and its something in common is not given unnecessary details, and difference only is; In the present embodiment, two sections parallel connections of said each phase winding coil, each is each end points connection of an end of the same name mutually; Another each end points of end of the same name constitutes the star winding as low-voltage output.
A1 links to each other with A4 with A3, A2, and B1 links to each other with B4 with B3, B2, C1 and C3, and C2 links to each other with C4, forms the low pressure 3.15KV coil of 35/3.15KV, 10/3.15KV transformer; A1, B1, C1 do the three-phase low-voltage output of 35/3.15KV, 10/3.15KV transformer.
Fig. 2 and Fig. 3 are through the outside switching that is connected the switching that changes between realization 35/6.3KV and the 35/3.15KV and 10/6.3KV, 10/3.15KV.
Embodiment three: referring to Fig. 4.
Present embodiment and embodiment one are basic identical, and its something in common is not given unnecessary details, and difference only is; In the present embodiment, two sections series connection of said each phase winding coil, each is head and the tail connection successively mutually; Each end points of an end of the same name of each phase constitutes delta windings as low-voltage output.
A2 links to each other with A3, and B2 links to each other with B3, and C2 links to each other with C3, forms 35/6.3KV, 10/6.3KV transformer low voltage 6.3KV coil.A1 and C4, B1 and A4, C1 links to each other with B4, forms 35/6.3KV, 10/6.3KV transformer triangle connecting coil.A1, B1, C1 directly draw the three-phase low pressure output line of making transformer.
Embodiment four: referring to Fig. 5.
Present embodiment and embodiment four are basic identical, and its something in common is not given unnecessary details, and difference only is, in the present embodiment, and two sections parallel connections of said each phase winding coil.
A1 links to each other with A4 with A3, A2, and B1 links to each other with B4 with B3, B2, C1 and C3, and C2 links to each other with C4, forms the low pressure 3.15KV coil of 35/3.15KV, 10/3.15KV transformer; A1, B1, C1 do the three-phase low-voltage output of 35/3.15KV, 10/3.15KV transformer.A1 and C4, B1 and A4, C1 links to each other with B4, forms 35/3.15KV, 10/3.15KV transformer triangle connecting coil.
Fig. 4 and Fig. 5 are through the outside switching that is connected the switching that changes between realization 35/6.3KV and the 35/3.15KV and 10/6.3KV, 10/3.15KV.
Each embodiment of the utility model; High-pressure side all adopts 35KV or 10KV; Realized any switching between 35/6.3/3.15KV or the 10/6.3/3.15KV through simple mode; Solved current transformer and can't realize the switching problem between three kinds of electric pressures through straightforward procedure, economical and practical, simple and practical;
When making transformer, transformer core material, size, processing technology etc. need not change; Transformer case, cooling system are constant; Can be oil immersed type energy-economic transformer or dry type energy-economic transformer; Can be common transformer or mining transformer; The low voltage winding in transformers that this method is produced can be connected into star, also can be connected into triangle, therefore can realize the transformer of any mode of connection during fabrication;
Not only be applicable to China country voltage standard, can be applicable to the switching between the following three kinds of electric pressures of other countries' voltage standard equally in the same way.
What the embodiment of the utility model announced is preferred embodiment; But be not limited thereto, those of ordinary skill in the art is very easily according to the foregoing description; Understand the spirit of the utility model; And make different amplifications and variation, but only otherwise break away from the spirit of the utility model, all in the protection range of the utility model.

Claims (3)

1. dual-ratio transformer; Comprise the high pressure winding; The low pressure winding, iron core is characterized in that: the winding coil of said each phase of low pressure winding all therefrom portion separately be divided into structure equate, around to identical two sections; The winding coil of each phase all has four end points, draws the connecting line that extends to transformer case respectively from four end points.
2. dual-ratio transformer according to claim 1 is characterized in that: two sections of said each phase winding coil series connection parallel connection, each mutually each end points of an end of the same name connect, another each end points of end of the same name constitutes the star winding as low-voltage output.
3. dual-ratio transformer according to claim 1 is characterized in that: two sections series connection parallel connection of said each phase winding coil, respectively connect from beginning to end successively mutually, and each end points of an end of the same name of each phase constitutes delta windings as low-voltage output.
CN2011203577879U 2011-09-22 2011-09-22 Dual-ratio transformer Expired - Fee Related CN202307457U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011203577879U CN202307457U (en) 2011-09-22 2011-09-22 Dual-ratio transformer

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Application Number Priority Date Filing Date Title
CN2011203577879U CN202307457U (en) 2011-09-22 2011-09-22 Dual-ratio transformer

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CN202307457U true CN202307457U (en) 2012-07-04

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102360847A (en) * 2011-09-22 2012-02-22 江西稀有金属钨业控股集团有限公司 Dual-transformation ratio transformer
CN103000360A (en) * 2012-12-17 2013-03-27 杭州大互互感器有限公司 10kV-20kV voltage transformer and voltage changing method
CN105428038A (en) * 2016-01-12 2016-03-23 南通富力机电设备有限责任公司 Main transformer for multifunctional machine
CN105632728A (en) * 2016-03-25 2016-06-01 浙江江变科技有限公司 Test three-phase intermediate transformer with combination of series-parallel connection and star-triangle conversion

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102360847A (en) * 2011-09-22 2012-02-22 江西稀有金属钨业控股集团有限公司 Dual-transformation ratio transformer
CN103000360A (en) * 2012-12-17 2013-03-27 杭州大互互感器有限公司 10kV-20kV voltage transformer and voltage changing method
CN105428038A (en) * 2016-01-12 2016-03-23 南通富力机电设备有限责任公司 Main transformer for multifunctional machine
CN105632728A (en) * 2016-03-25 2016-06-01 浙江江变科技有限公司 Test three-phase intermediate transformer with combination of series-parallel connection and star-triangle conversion
CN105632728B (en) * 2016-03-25 2018-02-02 浙江江变科技有限公司 The experiment three-phase intermediate transformer that a kind of connection in series-parallel and star triangular transformation are combined

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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: 20120704

Termination date: 20170922