CN204087972U - A kind of square ring structure-improved oil-filled transformer - Google Patents
A kind of square ring structure-improved oil-filled transformer Download PDFInfo
- Publication number
- CN204087972U CN204087972U CN201420441892.4U CN201420441892U CN204087972U CN 204087972 U CN204087972 U CN 204087972U CN 201420441892 U CN201420441892 U CN 201420441892U CN 204087972 U CN204087972 U CN 204087972U
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- China
- Prior art keywords
- square ring
- winding
- filled transformer
- improved oil
- horizontal circular
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Abstract
The utility model discloses a kind of square ring structure-improved oil-filled transformer, comprise upper yoke, lower yoke, iron core column and be enclosed within winding in iron core column, be located at the insulating barrier between iron yoke and winding end face, also comprise the square ring that two-layer corrugated board, screen cardboard and cardboard in the master control road that is located between winding are made, described screen cardboard is located in the middle of two-layer corrugated board; Described square ring is cylindric, and one end is provided with the horizontal circular ring vertical with cylindrical shell, and the horizontal circular ring of described square ring is located between winding end face and Double layer iron yoke, and vertical barrel jacket is on winding outer wall.The utility model structure is simple, the electric field strength of homogenizing high-tension coil end, increases creepage distance, effectively blocks electric field.
Description
Technical field
The utility model belongs to power transformer technical field, particularly relates to the improvement of Long Circle 35KV oil immersion-type distribution transformer square ring structure.
Background technology
Long Circle 35kV oil immersion-type distribution transformer is the transformer be in daily use at present, obtains social recognition.It is simple, easy to operate that Long Circle structure 35kV oil immersion-type distribution transformer compares circular configuration 35kV oil immersion-type distribution transformer technique, saves material, cost-saving.By particular manufacturing craft coiling, be inserted in iron core; And being applicable to the transformer making larger capacity or volume, current Long Circle 35kV oil immersion-type distribution transformer is widely used.
35kV oil immersion-type distribution transformer, the end field intensity of high-tension coil is comparatively large and deformity is serious, and for improving the Electric Field Distribution of winding overhang, the effect all adopting square ring structure to reach in prior art high voltage transformer is good not.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of square ring modified model oil-filled transformer, homogenize end field strength distribution and increase creepage distance, solve the problem that electrical breakdown easily occurs 35kV oil immersion-type distribution transformer end winding, thus improve transformer security of operation and reliability.
Technical scheme: for achieving the above object, the utility model is by the following technical solutions: a kind of square ring structure-improved oil-filled transformer, comprise upper yoke, lower yoke, iron core column and be enclosed within winding in iron core column, be located at the insulating barrier between iron yoke and winding end face, also comprise the square ring that two-layer corrugated board, screen cardboard and cardboard in the master control road that is located between winding are made, described screen cardboard is located in the middle of two-layer corrugated board; Described square ring is cylindric, and one end is provided with the horizontal circular ring vertical with cylindrical shell, and the horizontal circular ring of described square ring is located between winding end face and Double layer iron yoke, and vertical barrel jacket is on winding outer wall.
As preferably, enclose flanging processed after the cylindrical shell of described square ring and horizontal circular ring superpose by couch board and form.
As preferably, the horizontal circular ring thickness of described square ring is 3mm, and vertical cylindrical shell thickness is 2mm.
As preferably, the external diameter of described square ring horizontal circular ring is identical with step-up side circle external diameter.
As preferably, the shape of described square ring overlaps with end power line equipotential surface.
Beneficial effect: compared with prior art, the utility model structure is simple, the electric field strength of homogenizing high-tension coil end, increases creepage distance, effectively blocks electric field.
Accompanying drawing explanation
Fig. 1 is the structural representation of square ring structure-improved transformer described in the utility model;
Fig. 2 is the enlarged drawing of a-quadrant in Fig. 1;
Fig. 3 is the structural representation of square ring described in the utility model;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the expansion schematic diagram of square ring described in the utility model.
Wherein, core insulation layer 1, corrugated board 2, square ring 3, screen cardboard 4, winding terminal circle 5.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the utility model further, these embodiments should be understood and be only not used in restriction scope of the present utility model for illustration of the utility model, after having read the utility model, the amendment of those skilled in the art to the various equivalent form of value of the present utility model has all fallen within the application's claims limited range.
As shown in Figure 1, a kind of square ring structure-improved oil-filled transformer, this square ring horizontal component annulus is placed between high pressure winding terminal circle 6 and Double layer iron yoke 1, and vertical component cylindrical shell is placed between high-low pressure winding master control road; As shown in Figure 2, master control road between high-low pressure winding is made up of corrugated board 1 and 5, screen cardboard 4, square ring 3 etc., square ring vertical component is placed between corrugated board 1 and screen cardboard 4, square ring horizontal component is placed between upper and lower core insulation 1 and high pressure winding terminal circle 6, square ring horizontal component external diameter equals high-pressure side circle external diameter, and vertical component height is 100-120mm, the electric field strength of homogenizing high-tension coil end, add creepage distance, effectively block electric field.
As shown in Figure 3, square ring forms by enclosing flanging processed after 0.5mm cardboard sheared edge, 4 can be adopted to be formed by stacking according to high-tension coil electric pressure square ring vertical component, horizontal component adds 2 and be made on the basis of vertical component.
Square ring forms by enclosing flanging processed after 0.5mm cardboard sheared edge, 4 can be adopted to be formed by stacking according to high-tension coil electric pressure square ring vertical component, horizontal component adds 2 and be made on the basis of vertical component.The end of 35KV level and above winding, especially during the outlet of end, need install square ring.The shape of square ring should overlap with end power line equipotential surface, namely vertical with the power line of electric field, effectively to block the effect of electric field.Square ring horizontal component annulus is placed between high pressure winding terminal circle and Double layer iron yoke, and vertical component cylindrical shell is placed between high-low pressure winding master control road, excessive circular arc can not ether little.Like this, insulating cylinder length can reduce, and strengthens the insulation of winding overhang, makes insulation system compact.Soft corner-ring horizontal component is thick is 3mm, and vertical component is 2mm.Square ring can not be one, and can be 2 very to 3, and this depends on that electric pressure, winding width are to spacing, paper web number etc.Master control road between high-low pressure winding is made up of jointly corrugated board, screen cardboard, square ring, electrostatic shielding and cable paper etc., thus meets the insulation distance between high-low pressure winding.
Claims (5)
1. a square ring structure-improved oil-filled transformer, comprise upper yoke, lower yoke, iron core column and be enclosed within winding in iron core column, be located at the insulating barrier between iron yoke and winding end face, it is characterized in that: also comprise the square ring that two-layer corrugated board, screen cardboard and cardboard in the master control road that is located between winding are made, described screen cardboard is located in the middle of two-layer corrugated board; Described square ring is cylindric, and one end is provided with the horizontal circular ring vertical with cylindrical shell, and the horizontal circular ring of described square ring is located between winding end face and Double layer iron yoke, and vertical barrel jacket is on winding outer wall.
2. square ring structure-improved oil-filled transformer according to claim 1, is characterized in that: the cylindrical shell of described square ring and horizontal circular ring form by circle flanging processed after couch board superposition.
3. square ring structure-improved oil-filled transformer according to claim 1, is characterized in that: the horizontal circular ring thickness of described square ring is 3mm, and vertical cylindrical shell thickness is 2mm.
4. square ring structure-improved oil-filled transformer according to claim 1, is characterized in that: the external diameter of described square ring horizontal circular ring is identical with step-up side circle external diameter.
5. square ring structure-improved oil-filled transformer according to claim 1, is characterized in that: the shape of described square ring overlaps with end power line equipotential surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420441892.4U CN204087972U (en) | 2014-08-06 | 2014-08-06 | A kind of square ring structure-improved oil-filled transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420441892.4U CN204087972U (en) | 2014-08-06 | 2014-08-06 | A kind of square ring structure-improved oil-filled transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204087972U true CN204087972U (en) | 2015-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420441892.4U Expired - Fee Related CN204087972U (en) | 2014-08-06 | 2014-08-06 | A kind of square ring structure-improved oil-filled transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204087972U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114783738A (en) * | 2022-05-30 | 2022-07-22 | 重庆科新电气有限公司 | Angle ring type dry-type transformer and angle ring production process |
-
2014
- 2014-08-06 CN CN201420441892.4U patent/CN204087972U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114783738A (en) * | 2022-05-30 | 2022-07-22 | 重庆科新电气有限公司 | Angle ring type dry-type transformer and angle ring production process |
| CN114783738B (en) * | 2022-05-30 | 2023-09-12 | 重庆科新电气有限公司 | Corner ring production process |
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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: 20150107 Termination date: 20200806 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |