CN204668114U - The dry-type transformer that low-voltage and high-current multivoltage exports - Google Patents
The dry-type transformer that low-voltage and high-current multivoltage exports Download PDFInfo
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- CN204668114U CN204668114U CN201520446807.8U CN201520446807U CN204668114U CN 204668114 U CN204668114 U CN 204668114U CN 201520446807 U CN201520446807 U CN 201520446807U CN 204668114 U CN204668114 U CN 204668114U
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- siding ring
- copper bar
- dry
- insulation
- voltage
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Abstract
The utility model discloses the dry-type transformer that a kind of low-voltage and high-current multivoltage exports, comprise first siding ring and second siding ring, described first siding ring and second siding ring form by the Copper Foil coiling of same size, first siding ring and second siding ring is inner and between be provided with airway strip for heat radiation and insulation; Be provided with tap copper bar at the diverse location of second siding ring, and the Copper Foil that this component connects copper bar and correspondence position is welded to connect; First siding ring is provided with connection copper bar, between tap copper bar, between connection copper bar, is equipped with insulator; Be provided with end insulation in the end of first siding ring and second siding ring, outside second siding ring, be provided with outsourcing insulation.This dry-type transformer adopts the pressure regulation of tap copper bar, and output current is large, farthest ensures and improves the performance of product, meeting the market demand.
Description
Technical field
The utility model belongs to transformer manufacture technology, relates to the dry-type transformer that a kind of low-voltage and high-current multivoltage exports.
Background technology
The primary side of general distribution transformer is all the input (step-up transformer is for exporting) of high voltage small area analysis, calculate for distribution transformer Chinese Home standard regulation heap(ed) capacity 2500kVA, a side line voltage is generally based on 10kV, and line current is also only 144.3A.In the application of dry-type distribution transformer generally based on non-excitation pressure adjustment, input (output) electric current is less, and regulation voltage junction block diameter used is generally Φ 25mm, and the sectional area of junction block reaches 490.9mm
2, can ensure that junction current density is enough little completely, the problem of thermal impact insulation life during normal operation, can not be produced.In different junction block positions, variation is installed by brace, changes secondary and export (input) voltage.
For the capacity 500kVA of the market demand, input voltage 270V, output voltage 400V, and the dry-type transformer that output voltage can regulate ± 5%.Because output current is very big, line current reaches 1069.2A, and phase current also reaches 617.3A, obviously can not meet this requirement with the voltage regulating mode of traditional wired seat brace.
Summary of the invention
The purpose of this utility model is to provide the dry-type transformer that a kind of low-voltage and high-current multivoltage exports, and this dry-type transformer adopts the pressure regulation of tap copper bar, and output current is large, farthest ensures and improves the performance of product, meeting the market demand.
The purpose of this utility model is achieved through the following technical solutions:
The dry-type transformer that a kind of low-voltage and high-current multivoltage exports, comprise first siding ring and second siding ring, it is characterized in that: described first siding ring and second siding ring form by the Copper Foil coiling of same size, first siding ring and second siding ring is inner and between be provided with airway strip for heat radiation and insulation; Be provided with tap copper bar at the diverse location of second siding ring, and the Copper Foil that this component connects copper bar and correspondence position is welded to connect; First siding ring is provided with connection copper bar, between tap copper bar, between connection copper bar, is equipped with insulator; Be provided with end insulation in the end of first siding ring and second siding ring, outside second siding ring, be provided with outsourcing insulation.
In the utility model, the insulator that a component connects between copper bar is staggered.End insulation is equipped with in the end, two ends of first siding ring and second siding ring.
A manufacture method for the dry-type transformer that low-voltage and high-current multivoltage exports, the method is specific as follows:
1) first coiling first siding ring, primary side voltage 270V, using preimpregnation DMD as layer insulation, shaping preimpregnation DMD, as end insulation, places airway strip, to ensure the temperature rise of coil in the position indicated, the connection copper bar of coil grips with insulator, to ensure away that line position can not offset;
2), after first siding ring coiling completes, main insulation airway strip is placed, continuous coiling second siding ring, when arriving the tap number of turn, welding tap copper bar, and fix its position with insulator installation, then continue coiling, complete to second siding ring coiling;
3) outside second siding ring, add outsourcing insulation, shaping drying solidifies; After drying terminates, at the upper and lower end parts Insulated positions cast cold setting resin of coil, to ensure that coil has enough stiffness, play sealing simultaneously, prevent the effect that coil makes moist; After resin solidification, coil winding terminates.
Technical characteristics of the present utility model is: secondary side voltage-regulation connects realization by the copper bar of diverse location, and tap copper bar and Copper Foil weld through row in the number of turn position of layout design and draw.One second siding ring all uses Copper Foil coiling, and Copper Foil selects same specification according to design.One second siding ring inner and between add airway strip, play the effect of heat radiation and insulation.Overhang adds end insulation, act as fixing Copper Foil.
The coil of the utility model structure type belongs to and uses first, and adopt the pressure regulation of tap copper bar, output current is very big, farthest ensures and improves the performance of product, meeting the market demand.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is schematic top plan view of the present utility model.
Embodiment
The dry-type transformer that a kind of low-voltage and high-current multivoltage exports, comprise first siding ring 1 and second siding ring 2, first siding ring and second siding ring form by the Copper Foil coiling of same size, first siding ring and second siding ring is inner and between be provided with airway strip 3 for heat radiation and insulation; Be provided with tap copper bar 4 at the diverse location of second siding ring, and the Copper Foil that this component connects copper bar and correspondence position is welded to connect; First siding ring is provided with and connects copper bar 5, between tap copper bar, between connection copper bar, be equipped with insulator 6; The insulator that one component connects between copper bar is staggered.Be provided with end insulation 7 in the end, two ends of first siding ring and second siding ring, outside second siding ring, be provided with outsourcing insulation 8.
A manufacture method for the dry-type transformer that low-voltage and high-current multivoltage exports, specific as follows:
When coil manufactures, first coiling primary side 270V coil, using preimpregnation DMD as layer insulation, shaping preimpregnation DMD, as end insulation, places airway strip, to ensure the temperature rise of coil in the position that drawing indicates, the outlet copper bar of coil grips with insulator, to ensure away that line position can not offset.
After first siding ring coiling completes, place main insulation airway strip, continuous coiling second siding ring, when arriving the tap number of turn shown in drawing, welding tap outlet copper bar, and fix its position with insulator installation, then continue coiling, complete to secondary coil coiling.
Add outsourcing insulation, shaping drying solidifies.After drying terminates, at the upper and lower end parts Insulated positions cast cold setting resin of coil, to ensure that coil has enough stiffness, play sealing simultaneously, prevent the effect that coil makes moist.After resin solidification, coil winding terminates.
Claims (3)
1. the dry-type transformer of a low-voltage and high-current multivoltage output, comprise first siding ring (1) and second siding ring (2), it is characterized in that: described first siding ring (1) and second siding ring (2) form by the Copper Foil coiling of same size, first siding ring (1) and second siding ring (2) is inner and between be provided with airway strip (3) for heat radiation and insulation; Be provided with tap copper bar (4) at the diverse location of second siding ring (2), and the Copper Foil that this component connects copper bar (4) and correspondence position is welded to connect; First siding ring (1) is provided with and connects copper bar (5), between tap copper bar (4), between connection copper bar (5), be equipped with insulator (6); Be provided with end insulation (7) in the end of first siding ring (1) and second siding ring (2), be provided with outsourcing insulation (8) in second siding ring (2) outside.
2. the dry-type transformer of low-voltage and high-current multivoltage output according to claim 1, is characterized in that: the insulator (6) that a component connects between copper bar (4) is staggered.
3. the dry-type transformer of low-voltage and high-current multivoltage output according to claim 1, is characterized in that: be equipped with end insulation (7) in the end, two ends of first siding ring (1) and second siding ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520446807.8U CN204668114U (en) | 2015-06-26 | 2015-06-26 | The dry-type transformer that low-voltage and high-current multivoltage exports |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520446807.8U CN204668114U (en) | 2015-06-26 | 2015-06-26 | The dry-type transformer that low-voltage and high-current multivoltage exports |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204668114U true CN204668114U (en) | 2015-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520446807.8U Expired - Fee Related CN204668114U (en) | 2015-06-26 | 2015-06-26 | The dry-type transformer that low-voltage and high-current multivoltage exports |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204668114U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900387A (en) * | 2015-06-26 | 2015-09-09 | 镇江天力变压器有限公司 | Low-voltage large-current multiple-voltage output dry-type transformer and manufacturing method thereof |
| CN114220640A (en) * | 2021-11-09 | 2022-03-22 | 上海置信电气非晶有限公司 | Low-voltage coil for dry-type transformer |
-
2015
- 2015-06-26 CN CN201520446807.8U patent/CN204668114U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900387A (en) * | 2015-06-26 | 2015-09-09 | 镇江天力变压器有限公司 | Low-voltage large-current multiple-voltage output dry-type transformer and manufacturing method thereof |
| CN114220640A (en) * | 2021-11-09 | 2022-03-22 | 上海置信电气非晶有限公司 | Low-voltage coil for dry-type transformer |
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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: 20150923 Termination date: 20200626 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |