CN202678058U - Power transformer - Google Patents
Power transformer Download PDFInfo
- Publication number
- CN202678058U CN202678058U CN 201220323142 CN201220323142U CN202678058U CN 202678058 U CN202678058 U CN 202678058U CN 201220323142 CN201220323142 CN 201220323142 CN 201220323142 U CN201220323142 U CN 201220323142U CN 202678058 U CN202678058 U CN 202678058U
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- winding
- low pressure
- voltage winding
- power transformer
- low
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- Expired - Lifetime
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Abstract
The utility model discloses a power transformer. The power transformer comprises an iron core, a hard paper tube, low-voltage winding and high-voltage winding, which are sequentially arranged from inside to outside, wherein the low-voltage winding has a middle wire-incoming structure and is divided into an upper low-voltage winding which is positioned on the upper part and a lower low-voltage winding which is positioned on the lower part; the upper low-voltage winding winds rightwards, and the lower low-voltage winding winds leftwards; and the upper low-voltage winding and the lower low-voltage winding are connected in parallel. By the power transformer, the problem of difficulty in transposition of coil wires because a large number of continuous coil wires which adopt an end wire-incoming mode are wound in parallel can be solved, the filling rate of the wires is improved, and cost is saved.
Description
Technical field
The utility model relates to transformer, is specifically related to a kind of electric pressure 6～10kV, winding and arranges near iron core, capacity in the loop construction of 12500～40000kVA, has to carry or the power transformer of non-excitation pressure adjustment.
Background technology
When the three-phase transformer capacity at 12500～40000kVA, the low-voltage coil electric pressure is 6 or during 10kV, the coil pattern selects to be in continous way and spiral interval.As adopt spirally, and filling rate is low, and is often improper or uneconomical owing to being subjected to the restrictions such as impedance, wire gauge, thus mostly adopt the structure of continous way, but because coil and more around radical, tend to surpass half of stay number, make coil transposition difficulty.
Summary of the invention
The purpose of this utility model provides a kind of power transformer, is convenient to the transposition of wire in the coil winding process, and improves the filling rate of winding wire.
Power transformer described in the utility model, it comprises iron core, cardboard cylinder, low pressure winding and the high pressure winding that sets gradually from the inside to surface, described low pressure winding adopts the middle part incoming line structure, be divided into superposed low pressure top winding and the low pressure bottom winding that is positioned at the bottom, described low pressure top winding be right around to, low pressure bottom winding be left around to, and low pressure top winding and low pressure bottom winding are in parallel.
The first line of described low pressure top winding and low pressure bottom winding is all drawn from the stay neutral gear of the final stage of iron core, and described first line is through wrapping, and logical paper-passing trough is drawn respectively.
The position that the first line of corresponding low pressure top winding and low pressure bottom winding is drawn on the described cardboard cylinder is the plane.
Power transformer described in the utility model, because the continuous winding structure of inlet wire, connect in parallel with upside and downside in the middle part of having adopted, avoid the continuous winding wire of end inlet wire and around the transposition difficulty that radical too much causes, improved the filling rate of wire, saved cost.
Description of drawings
Fig. 1 is the position relationship schematic diagram of iron core in the power transformer described in the utility model, low pressure winding and high pressure winding;
Fig. 2 is the schematic diagram of the first line incoming line structure of power transformer described in the utility model;
Fig. 3 is the schematic diagram of the outside lead syndeton of power transformer described in the utility model;
Fig. 4 is the schematic diagram of Fig. 3.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Power transformer as shown in Figures 1 to 4, its main body comprises iron core 1, cardboard cylinder 4, low pressure winding 2 and the high pressure winding 3 that sets gradually from the inside to surface, low pressure winding 2 adopts the middle part incoming line structure, be divided into superposed low pressure top winding and the low pressure bottom winding that is positioned at the bottom, described low pressure top winding be right around to, low pressure bottom winding be left around to, and low pressure top winding and low pressure bottom winding are in parallel.
As shown in Figure 2, the first line 2-1 of low pressure top winding and low pressure bottom winding all draws from stay 6 neutral gears of the final stage 1-1 of iron core, and first line 2-1 is all through wrapping 3mm, and is that the paper groove 5 of 2mm is drawn by thickness respectively.The position that the first line 2-1 of corresponding low pressure top winding and low pressure bottom winding draws on the cardboard cylinder 4 is plane 4-1.
As shown in Figure 3 and Figure 4, the iron core of power transformer adopts three-phase core formula structure, each phase low pressure winding is divided into upper and lower two parts, that is: first, second, third low pressure top winding 2-2,2-3,2-4 and first, second, third low pressure bottom winding 2-5,2-6,2-7.Wherein, first, second, third low pressure top winding 2-2,2-3,2-4 adopt YNd11(also can adopt YNyn0d11) connect into △ shape, first, second, third low pressure bottom winding 2-5,2-6,2-7 adopt YNd11(also can adopt YNyn0d11) connect into △ shape; Then with lead-in wire L the top a of the first low pressure top winding 2-2 is connected with the top a ' of the first low pressure bottom winding 2-5, with lead-in wire L the top b of the second low pressure top winding 2-3 is connected with the top b ' of the second low pressure bottom winding 2-6, with lead-in wire L the top c of the 3rd low pressure top winding 2-4 is connected with the top c ' of the 3rd low pressure bottom winding 2-7, thereby realize that the first low pressure top winding 2-2 is in parallel with the first low pressure bottom winding 2-5, the second low pressure top winding 2-3 is in parallel with the second low pressure bottom winding 2-6 and the 3rd low pressure top winding 2-4 is in parallel with the 3rd low pressure bottom winding 2-7, makes the outside lead of low pressure winding 2 connect into double triangle.
Claims (3)
1. power transformer, comprise the iron core (1), cardboard cylinder (4), low pressure winding (2) and the high pressure winding (3) that set gradually from the inside to surface, it is characterized in that: described low pressure winding adopts the middle part incoming line structure, be divided into superposed low pressure top winding and the low pressure bottom winding that is positioned at the bottom, described low pressure top winding be right around to, low pressure bottom winding be left around to, and low pressure top winding and low pressure bottom winding are in parallel.
2. power transformer according to claim 1, it is characterized in that: the first line (2-1) of described low pressure top winding and low pressure bottom winding is all drawn from stay (6) neutral gear of the final stage (1-1) of iron core, and described first line is all through wrapping, and logical paper-passing trough (5) is drawn respectively.
3. power transformer according to claim 1 and 2 is characterized in that: the position that the first line (2-1) of the upper corresponding low pressure top winding of described cardboard cylinder (4) and low pressure bottom winding is drawn is plane (4-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220323142 CN202678058U (en) | 2012-07-05 | 2012-07-05 | Power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220323142 CN202678058U (en) | 2012-07-05 | 2012-07-05 | Power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678058U true CN202678058U (en) | 2013-01-16 |
Family
ID=47498944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220323142 Expired - Lifetime CN202678058U (en) | 2012-07-05 | 2012-07-05 | Power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678058U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709032A (en) * | 2012-07-05 | 2012-10-03 | 重庆市亚东亚集团变压器有限公司 | Power transformer |
| CN103065776A (en) * | 2012-12-27 | 2013-04-24 | 吴江市变压器厂有限公司 | Winding structure of transformer |
| CN106935385A (en) * | 2017-04-25 | 2017-07-07 | 国家电网公司 | A kind of power transformer load tap changer connected mode |
-
2012
- 2012-07-05 CN CN 201220323142 patent/CN202678058U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709032A (en) * | 2012-07-05 | 2012-10-03 | 重庆市亚东亚集团变压器有限公司 | Power transformer |
| CN103065776A (en) * | 2012-12-27 | 2013-04-24 | 吴江市变压器厂有限公司 | Winding structure of transformer |
| CN106935385A (en) * | 2017-04-25 | 2017-07-07 | 国家电网公司 | A kind of power transformer load tap changer connected mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING BORUI TRANSFORMER CO., LTD. Free format text: FORMER OWNER: CHONGQING AEA GROUP TRANSFORMER CO., LTD. Effective date: 20130513 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 408100 FULING, CHONGQING TO: 408102 FULING, CHONGQING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130513 Address after: 408102, Chongqing Fuling District Li Cross Street office, Saddle Road, 190 dragon road, small and medium-sized transformer factory building Patentee after: CHONGQING BORUI VOLTAGE TRANSFORMER CO.,LTD. Address before: 408100 Chongqing city Fuling District liduzhen Dragon Road No. 190 Patentee before: CHONGQING AEA GROUP TRANSFORMER Co.,Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: CHONGQING NANRI BORUI TRANSFOMER CO., LTD. Free format text: FORMER NAME: CHONGQING BORUI TRANSFORMER CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 408102, Chongqing Fuling District Li Cross Street office, Saddle Road, 190 dragon road, small and medium-sized transformer factory building Patentee after: CHONGQING NARI BORUI TRANSFORMER Co.,Ltd. Address before: 408102, Chongqing Fuling District Li Cross Street office, Saddle Road, 190 dragon road, small and medium-sized transformer factory building Patentee before: CHONGQING BORUI VOLTAGE TRANSFORMER CO.,LTD. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |
|
| CX01 | Expiry of patent term |