CN201812633U - Improved cooling system of oil-immersed self-cooled power transformer - Google Patents
Improved cooling system of oil-immersed self-cooled power transformer Download PDFInfo
- Publication number
- CN201812633U CN201812633U CN2009201725351U CN200920172535U CN201812633U CN 201812633 U CN201812633 U CN 201812633U CN 2009201725351 U CN2009201725351 U CN 2009201725351U CN 200920172535 U CN200920172535 U CN 200920172535U CN 201812633 U CN201812633 U CN 201812633U
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- oil
- transformer
- fuel tank
- cooling system
- immersed self
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Abstract
The utility model discloses an improved cooling system of an oil-immersed self-cooled power transformer. A separating guide plate and a guide plate are arranged, and an upper cover and a bottom plate of an oil tank are changed, thus improving natural convection of cooling medium (such as transformer oil and air), and further remarkably improving the cooling capacity, and reducing the average temperature and hot spot temperature of the transformer.
Description
Affiliated field the utility model belongs to the power transformer technical field, particularly relates to the cooling system of oil-immersed self-cooled power transformer.
Background technology is well-known, and the oil-immersed self-cooled power transformer is present widely used a kind of power transformer type.Transformer core (iron core and winding) is dipped in the interior transformer oil of fuel tank, and transformer oil plays insulation, intercepts effects such as air, moisture; And the heat of absorption transformer core generation in service, mainly, be delivered to oil tank wall by the free convection mode; By oil tank wall, be dispersed in the outer coolant (atmosphere) of fuel tank, its heat transfer type mainly also is free convection again.
The oil-immersed self cooled transformer that existing employing free convection mode is dispelled the heat, the free convection of strengthening coolant (the outer atmosphere of transformer oil in the fuel tank and fuel tank) on the structure, and take the design of special specific aim. therefore, because free convection insufficient strength, bring a series of weak points: 1, cooling capacity excessively a little less than, can not adapt to the large-capacity power transformer.2, there be some transformer oil very weak " dead band " of flowing in some position, and forms local temperature focus, quickens ageing of insulation, reduces useful life.3, higher oil is warm, causes Transformer Winding resistance to rise, and loss increases.4, limited the lifting of load-bearing capacity when transformer is in emergency rating.
Summary of the invention the utility model is eliminated or reduce to flow " dead band " by strengthening the intensity of free convection.Reach and promote cooling capacity, increase transformer capacity; Reduce device core temperature, reduce running wastage; Reduce the winding temperature rise of hot spot, increase the service life; Increase the ability of bring to power in the transformer emergency rating.
The utility model is taked following four kinds of measures for this reason.As shown in Figure 1: recessed in the middle of 1, fuel tank loam cake 1 is shaped as, outside projection.2, fuel tank base plate 7 is shaped as intermediate projections, under the outer concave.3, the partition baffle of being made by insulating material 4 is set between transformer core and the fuel tank sidewall.4, the outer certain distance of fuel tank sidewall is provided with baffler 6.More than four kinds of measures, can all adopt simultaneously, also can partly adopt.
The signal of description of drawings Fig. 1 oil-immersed self-cooled power transformer new construction
Reference numeral: 1, fuel tank loam cake 2, iron core 3, winding 4, partition baffle 5, fuel tank sidewall 6, baffler 7, fuel tank base plate
Among embodiment Fig. 1, transformer core (iron core 2, winding 3) places the transformer oil in the fuel tank.Recessed in the middle of fuel tank loam cake 1 is shaped as, outside projection.Fuel tank base plate 7 is shaped as intermediate projections, under the outer concave.The partition baffle of being made by insulating material 4 is set between transformer core and the fuel tank sidewall 5.The outer certain distance of fuel tank sidewall is provided with baffler 6.
Claims (4)
1. the cooling system of an oil-immersed self cooled transformer is made of fuel tank, transformer oil, it is characterized in that the fuel tank loam cake is recessed in the middle of being shaped as, outside projection.
2. the cooling system of an oil-immersed self cooled transformer is made of fuel tank, transformer oil, it is characterized in that the fuel tank base plate is shaped as intermediate projections, under the outer concave.
3. the cooling system of an oil-immersed self cooled transformer is made of fuel tank, transformer oil, it is characterized in that being provided with the partition baffle made from insulating material between transformer core and the fuel tank sidewall.
4. the cooling system of an oil-immersed self cooled transformer is made of fuel tank, transformer oil, it is characterized in that the outer certain distance of fuel tank sidewall is provided with baffler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201725351U CN201812633U (en) | 2009-06-11 | 2009-06-11 | Improved cooling system of oil-immersed self-cooled power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201725351U CN201812633U (en) | 2009-06-11 | 2009-06-11 | Improved cooling system of oil-immersed self-cooled power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201812633U true CN201812633U (en) | 2011-04-27 |
Family
ID=43895572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201725351U Expired - Fee Related CN201812633U (en) | 2009-06-11 | 2009-06-11 | Improved cooling system of oil-immersed self-cooled power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201812633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971890A (en) * | 2014-05-19 | 2014-08-06 | 苏州上电科电气设备有限公司 | Transformer oil tank |
-
2009
- 2009-06-11 CN CN2009201725351U patent/CN201812633U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971890A (en) * | 2014-05-19 | 2014-08-06 | 苏州上电科电气设备有限公司 | Transformer oil tank |
| CN103971890B (en) * | 2014-05-19 | 2016-03-30 | 苏州上电科电气设备有限公司 | A kind of oil tank of transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Qiang Xiaoming Inventor after: Zhao Min Inventor after: Zhang Liang Inventor after: Li Leina Inventor after: Dai Jinlin Inventor before: Qiang Xiaoming |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: QIANG XIAOMING TO: QIANG XIAOMING ZHAO MIN ZHANG LIANG LI LEINA DAI JINLIN |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20140611 |