CN202948827U - Additionally-arranged copper shielding structure for cover of large transformer case - Google Patents
Additionally-arranged copper shielding structure for cover of large transformer case Download PDFInfo
- Publication number
- CN202948827U CN202948827U CN 201220718962 CN201220718962U CN202948827U CN 202948827 U CN202948827 U CN 202948827U CN 201220718962 CN201220718962 CN 201220718962 CN 201220718962 U CN201220718962 U CN 201220718962U CN 202948827 U CN202948827 U CN 202948827U
- Authority
- CN
- China
- Prior art keywords
- case cover
- low
- copper
- case lid
- shielding structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to an additionally-arranged copper shielding structure for a cover of a large transformer case, and belongs to the technical field of transformers. According to the technical scheme, the copper shielding structure comprises a copper shield (1) and a case cover reinforcing iron (2), wherein the copper shield is arranged on the case cover reinforcing iron and welded on the edge of the case cover reinforcing iron between the low-voltage sides of a large transformer. By adopting a method of reducing the power consumption and utilizing the characteristics of being low in the resistivity of a copper plate and good in radiating performance, the scale of heat turbulence flowing through the edge of an oil case cover among low-voltage sleeves can be changed, the heat at the position can be reduced, the radiating effect is improved, the turbulence loss of the case cover can be effectively decreased, the local overheating at the edge position of the case cover among low-voltage sleeves can be removed, the running safety of the large transformer can be ensured, thereby producing good social benefits, and establishing a foundation for manufacturing a larger-capacity transformer in future.
Description
Technical field
The utility model relates to a kind of high-power transformer case lid increases the copper shield structure, belongs to the transformer technology field.
Background technology
fast development along with the power transformer cause, transformer capacity improves constantly, the operating current that flows through in low-tension bushing and envelope mother is increasing, the eddy current loss that produces on the case lid of large electric current formed outside stray field fuel tank is increasing, in addition, along with improving constantly of transformer capacity, the magnetic field intensity in the magnetic field that the high-current low-voltage lead-in wire forms also constantly strengthens, it is also increasing in the eddy current loss that fuel tank covers formation, two magnetic fields influence each other, and kelvin effect is on the impact of heating current, cause the alternate fuel tank case lid of high-power transformer low-tension bushing marginal position that superheating phenomenon easily occurs.Three-dimensional simulation magnetic field result of calculation also confirms this phenomenon.The fuel tank local overheating problem that solves high-power transformer large current outlet side is technological difficulties, is also engineering staff's problem demanding prompt solution.
The utility model content
The utility model purpose is to provide a kind of high-power transformer case lid increases the copper shield structure, and resistivity is low, good heat dissipation, change the heating eddy current at the alternate fuel tank case lid of the low-tension bushing edge of flowing through, reduce the heating of this position, improve simultaneously radiating effect, solve the problems referred to above that background technology exists.
The technical solution of the utility model is: a kind of high-power transformer case lid increases the copper shield structure, comprises copper shield and case lid and strengthens iron, and copper shield is arranged on case lid and strengthens on iron.
Described copper shield is welded on the alternate case lid of high-power transformer low-pressure side and strengthens on the edge of iron.
The utility model beneficial effect is: the utility model adopts the method that reduces power consumption, utilize copper coin resistivity low, the characteristics of good heat dissipation, change the heating eddy current at the alternate fuel tank case lid of the low-tension bushing edge of flowing through, reduce the heating of this position, improve simultaneously radiating effect, effectively reduce the eddy current loss of case lid, eliminate the alternate case lid marginal position of low-tension bushing local overheating, guaranteed the safe operation of high-power transformer, produced good social benefit, laid a good foundation for making from now on more jumbo transformer simultaneously.
Description of drawings
Fig. 1 is the utility model embodiment schematic diagram;
In figure: copper shield 1, case lid are strengthened iron 2.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is described further.
A kind of high-power transformer case lid increases the copper shield structure, comprises copper shield 1 and case lid and strengthens iron 2, and copper shield is arranged on case lid and strengthens on iron.Described copper shield is welded on the alternate case lid of high-power transformer low-pressure side and strengthens on the edge of iron.
Claims (2)
1. a high-power transformer case lid increases the copper shield structure, it is characterized in that: comprise copper shield (1) and case lid and strengthen iron (2), copper shield is arranged on case lid and strengthens on iron.
2. a kind of high-power transformer case lid according to claim 1 increases the copper shield structure, it is characterized in that: described copper shield is welded on the alternate case lid of high-power transformer low-pressure side and strengthens on the edge of iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220718962 CN202948827U (en) | 2012-12-24 | 2012-12-24 | Additionally-arranged copper shielding structure for cover of large transformer case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220718962 CN202948827U (en) | 2012-12-24 | 2012-12-24 | Additionally-arranged copper shielding structure for cover of large transformer case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202948827U true CN202948827U (en) | 2013-05-22 |
Family
ID=48424518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220718962 Expired - Lifetime CN202948827U (en) | 2012-12-24 | 2012-12-24 | Additionally-arranged copper shielding structure for cover of large transformer case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202948827U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118611A (en) * | 2015-07-13 | 2015-12-02 | 国家电网公司 | Method for reducing partial heating of transformer shell |
-
2012
- 2012-12-24 CN CN 201220718962 patent/CN202948827U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118611A (en) * | 2015-07-13 | 2015-12-02 | 国家电网公司 | Method for reducing partial heating of transformer shell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |