CN102214513A - Dual-voltage transformer - Google Patents
Dual-voltage transformer Download PDFInfo
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- CN102214513A CN102214513A CN 201010143581 CN201010143581A CN102214513A CN 102214513 A CN102214513 A CN 102214513A CN 201010143581 CN201010143581 CN 201010143581 CN 201010143581 A CN201010143581 A CN 201010143581A CN 102214513 A CN102214513 A CN 102214513A
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Abstract
The invention relates to a transformer used for changing the size of alternating voltage on the basis of an electromagnetic induction principle and discloses a dual-voltage transformer. The dual-voltage transformer comprises a high-voltage side winding, a low-voltage side winding and a closed iron core, wherein the high-voltage side winding and the low-voltage side winding are respectively wound on the closed iron core, the high-voltage side winding is divided into two parts of windings along the axial direction of the iron core, and the two parts of windings are either in parallel connection or in series connection as required. According to the invention, the high-voltage side winding of the traditional transformer is divided into two parts of windings along the axial direction of the iron core so that the two parts of windings are either in parallel connection or in series connection as required, therefore the voltage of the high-voltage side winding of the transformer can be switched between two voltages, furthermore, the same transformer can be applied to two power grids with different voltage grades, the application scope of the transformer can be effectively widened, and the cost is reduced effectively.
Description
Technical field
The present invention relates to a kind of transformer.
Background technology
At present, existing transformer only can change over another kind of alternating voltage by electromagnetic induction principle with a kind of alternating voltage.See also Fig. 1, Figure 1 shows that the schematic diagram of existing transformer, as seen from Fig. 1, at primary side (AX) the input 10kV of transformer or the alternating current of 20kV, by electromagnetic induction principle, induce the 400V alternating current at the secondary side of transformer, use for industrial and agricultural production.
Existing common transformer is widely used in the urban and rural power grids, and in case the transformer manufacturing is finished, the voltage of its primary side is with regard to respective fixation.Yet along with China's economic development, power consumption increase, the power supply of 10kV level electrical network half is not through just meeting the demands, and the 20kV level electrical network that arises at the historic moment will occur.Existing 10kV level electrical network is also gradually to the transition of 20kV level, and the transformer that the 10kV level becomes 400V will be eliminated.
In this new and old replacement on the horizon period, how a kind of electrical network needs that can not only adapt to existing 10kV level are provided, and can also are technical problems that those skilled in the art need to be resolved hurrily by two voltage transformers that can adapt to the national 20kV level electrical network needs of promoting after the simple transformation.
Summary of the invention
The object of the present invention is to provide a kind of pair of voltage transformer, can realize two kinds of conversion between the voltage, can be applied in two kinds of electrical networks with different voltage levels.
To achieve the above object, the present invention adopts following technical scheme:
A kind of pair of voltage transformer, comprise high-pressure side winding, low-pressure side winding and iron core-closed, described high-pressure side winding and low-pressure side winding are wound on described iron core-closed respectively, to the separated into two parts winding, described two parts winding is connected to select a mode in two kinds of connected modes of series connection and parallel connection described high-pressure side winding according to demand along iron mandrel.
In above-mentioned two voltage transformers, described high-pressure side winding along iron mandrel to being divided into two parts winding.
In above-mentioned two voltage transformers, described two parts winding be by the high-pressure side winding of 20kV level along iron mandrel to being divided into upper and lower two parts winding, the drawing respectively end to end of described upper and lower two parts winding.
In above-mentioned two voltage transformers, when described upper and lower two parts winding was connected in parallel, described high-pressure side winding was the 10kV level.
In above-mentioned two voltage transformers, when described upper and lower two parts windings in series connected, described high-pressure side winding was the 20kV level.
In above-mentioned two voltage transformers, the low-pressure side winding that described low-pressure side winding is 400V.
In above-mentioned two voltage transformers, the class of insulation of described high-pressure side winding requires to be provided with according to the class of insulation of the high-pressure side winding of 20KV.
Beneficial effect of the present invention is as follows:
The present invention by the high-pressure side winding of existing transformer is pressed winding along iron mandrel to the separated into two parts winding, make described two parts winding in two kinds of connected modes of series connection and parallel connection, be connected to select a mode according to demand, realize the conversion of voltage between two kinds of voltage of the high-pressure side winding of transformer, thereby in can electrical network with same transformer application to two kind of different voltage levels, thereby effectively opened up the application of transformer, also effectively reduced cost simultaneously.
Description of drawings
Of the present invention pair of voltage transformer provided by following embodiment and accompanying drawing.
Fig. 1 is existing transformer principle figure;
Fig. 2 is the 10kV level transformer principle figure after two groups of 10kV windings parallel connection of the embodiment of the invention 1;
Fig. 3 is the 10kV level transformer front view after two groups of 10kV windings parallel connection of the embodiment of the invention 1;
Fig. 4 is the 10kV level transformer rearview of the embodiment of the invention 1;
Fig. 5 is the 10kV level transformer side cutaway view of embodiments of the invention 1;
Fig. 6 is the 20kV level transformer principle figure after two groups of 10kV windings in series of the embodiment of the invention 2;
Fig. 7 is the 20kV level transformer front view after two groups of 10kV windings in series of the embodiment of the invention 2;
Among the figure, 1-high-pressure side folder, 1 '-low-pressure side folder, 2A-high-pressure side A phase connection terminal, 2B-high-pressure side B phase connection terminal, 2C-high-pressure side C phase connection terminal, 2 ' a-low-pressure side a phase connection terminal, 2 ' b-low-pressure side b phase connection terminal, 2 ' c-low-pressure side c phase connection terminal, 3-iron core, 4-base, 5-plate, 6-high-side lead, 7-high-pressure side winding, 8-low-pressure side winding.
Embodiment
Below will be described in further detail of the present invention pair of voltage transformer.
Below with reference to accompanying drawings the present invention is described in more detail, has wherein represented the preferred embodiments of the present invention, should be appreciated that those skilled in the art can revise the present invention described here and still realize advantageous effects of the present invention.Therefore, following description is appreciated that extensively knowing for those skilled in the art, and not as limitation of the present invention.
For clear, whole features of practical embodiments are not described.In the following description, be not described in detail known function and structure, because they can make the present invention because unnecessary details and confusion.Will be understood that in the exploitation of any practical embodiments, must make a large amount of implementation details, for example, change into another embodiment by an embodiment according to relevant system or relevant commercial restriction to realize developer's specific objective.In addition, will be understood that this development may be complicated and time-consuming, but only be routine work to those skilled in the art.
For purpose of the present invention, feature are become apparent, the specific embodiment of the present invention is further described below in conjunction with accompanying drawing.It should be noted that accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, the purpose of the aid illustration embodiment of the invention lucidly.
See also Fig. 2-5, Figure 2 shows that the 10kV level transformer principle figure after two groups of 10kV windings parallel connection of the embodiment of the invention 1; Figure 3 shows that the 10kV level transformer front view after two groups of 10kV windings parallel connection of the embodiment of the invention 1; Figure 4 shows that the 10kV level transformer rearview of the embodiment of the invention 1; Figure 5 shows that the 10kV level transformer side cutaway view of embodiments of the invention 1;
This pair of voltage transformer, comprise high-pressure side winding 7 (being first side winding in the present embodiment), low-pressure side winding 8 (being secondary side winding in the present embodiment) and iron core-closed 3, described high-pressure side winding 7 and low-pressure side winding 8 are wound on described iron core-closed 3 respectively, to the separated into two parts winding, described two parts winding is connected to select a mode in two kinds of connected modes of series connection and parallel connection described high-pressure side 7 windings according to demand along iron mandrel.
In the present embodiment, described two parts winding be high-pressure side winding by existing 20kV level along iron mandrel to being divided into upper and lower two parts winding, drawing respectively end to end of described upper and lower two parts winding, so that the in parallel or series connection of described upper and lower two parts winding, and the switching between two kinds of connected modes.
In the present embodiment, described upper and lower two parts sub-winding is connected mutually, and described high-pressure side winding is the 10kV level, the low-pressure side winding that described low-pressure side winding is 400V.Specifically, described high-pressure side winding 7 is to be composed in parallel by plate 5 by two groups of 10KV windings that axially separate along iron core 3, the alternating current of three of (primary side) binding posts (high-pressure side A phase connection terminal 2A, high-pressure side B phase connection terminal 2B and high-pressure side C phase connection terminal 2C) input three-phase 10KV in the high-pressure side, by electromagnetic induction principle, induce the 400V alternating current at the low-pressure side winding 8 of this transformer.
Because described high-pressure side winding 7 will be with in the electrical network of 20kV after the electrical network upgrading, the class of insulation of the high-pressure side winding 7 of described this transformer requires to be provided with according to the class of insulation of the high-pressure side winding of 20KV.
See also Fig. 6-7, Figure 6 shows that the 20kV level transformer principle figure after two groups of 10kV windings in series of the embodiment of the invention 2; Figure 7 shows that the 20kV level transformer front view after two groups of 10kV windings in series of the embodiment of the invention 2.In conjunction with consulting Fig. 4-5, Fig. 4 also is the 20kV level transformer rearview of the embodiment of the invention 2 simultaneously simultaneously; Fig. 5 also is the 20kV level transformer side cutaway view of embodiments of the invention 2 simultaneously.
Present embodiment is with the difference of embodiment 1: described upper and lower two parts winding is connected mutually, and described high-pressure side winding is the 20kV level, the low-pressure side winding that described low-pressure side winding is 400V.Specifically, described high-pressure side winding 7 is to be composed in series by plate 5 by two groups of 10KV windings that axially separate along iron core 3, alternating current on high-tension side three binding posts (high-pressure side A phase connection terminal 2A, high-pressure side B phase connection terminal 2B and high-pressure side C phase connection terminal 2C) input three-phase 20KV, by electromagnetic induction principle, induce the 400V alternating current at the low-pressure side winding 8 of this transformer.
From embodiment 1 and embodiment 2 as seen, this transformer device structure is simple, easy to use, both can satisfy the demand of present 10kV level electrical network, and, can satisfy the demand of 20kV level electrical network in the future again by simple conversion, thereby, can effectively save cost of investment and resource, and effectively open up the application of transformer.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (7)
1. two voltage transformer, comprise high-pressure side winding, low-pressure side winding and iron core-closed, described high-pressure side winding and low-pressure side winding are wound on described iron core-closed respectively, it is characterized in that, to the separated into two parts winding, described two parts winding is connected to select a mode in two kinds of connected modes of series connection and parallel connection described high-pressure side winding according to demand along iron mandrel.
2. pair voltage transformer as claimed in claim 1 is characterized in that, described high-pressure side winding along iron mandrel to being divided into two parts winding.
3. pair voltage transformer as claimed in claim 2 is characterized in that, described two parts winding be by the high-pressure side winding of 20kV level along iron mandrel to being divided into upper and lower two parts winding, the drawing respectively end to end of described upper and lower two parts winding.
4. pair voltage transformer as claimed in claim 3 is characterized in that, when described upper and lower two parts winding was connected in parallel, described high-pressure side winding was the 10kV level.
5. pair voltage transformer as claimed in claim 3 is characterized in that, when described upper and lower two parts windings in series connected, described high-pressure side winding was the 20kV level.
6. pair voltage transformer as claimed in claim 3 is characterized in that, the low-pressure side winding that described low-pressure side winding is 400V.
7. pair voltage transformer as claimed in claim 3 is characterized in that, the class of insulation of described high-pressure side winding requires to be provided with according to the class of insulation of the high-pressure side winding of 20KV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010143581 CN102214513A (en) | 2010-04-09 | 2010-04-09 | Dual-voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010143581 CN102214513A (en) | 2010-04-09 | 2010-04-09 | Dual-voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102214513A true CN102214513A (en) | 2011-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010143581 Pending CN102214513A (en) | 2010-04-09 | 2010-04-09 | Dual-voltage transformer |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345124A (en) * | 2008-04-29 | 2009-01-14 | 扬州华鼎电器有限公司 | Oil-immersed power transformer |
| CN101441931A (en) * | 2007-11-23 | 2009-05-27 | 上海市电力公司 | Dry transformer with adjustable capacity |
| CN201698878U (en) * | 2010-04-09 | 2011-01-05 | 江苏伯乐达变压器有限公司 | Dual-voltage transformer |
-
2010
- 2010-04-09 CN CN 201010143581 patent/CN102214513A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441931A (en) * | 2007-11-23 | 2009-05-27 | 上海市电力公司 | Dry transformer with adjustable capacity |
| CN101345124A (en) * | 2008-04-29 | 2009-01-14 | 扬州华鼎电器有限公司 | Oil-immersed power transformer |
| CN201698878U (en) * | 2010-04-09 | 2011-01-05 | 江苏伯乐达变压器有限公司 | Dual-voltage transformer |
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Application publication date: 20111012 |