CN202614072U - Plate radiator for natural cycle oil-immersed transformer - Google Patents
Plate radiator for natural cycle oil-immersed transformer Download PDFInfo
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- CN202614072U CN202614072U CN 201120434919 CN201120434919U CN202614072U CN 202614072 U CN202614072 U CN 202614072U CN 201120434919 CN201120434919 CN 201120434919 CN 201120434919 U CN201120434919 U CN 201120434919U CN 202614072 U CN202614072 U CN 202614072U
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- oil
- radiator
- aluminium strip
- heat transfer
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Abstract
The utility model relates to a plate radiator which is characterized in that a flow-disturbing spiral aluminum tape is mounted in each oil passageway of the radiator, the curved shape of each aluminum tape matches with the size of each oil passageway, and the bend diameter of each aluminum tape is 7 times as large as the tape width of each aluminum tape. The radiating fin is advantaged by improved oil side heat transfer efficiency, heat transfer coefficient which is 10% to 15% higher than that of a common radiating fin, and wide application to small-and-medium size oil-immersed transformers.
Description
Technical field
The utility model relates to a kind of radiator that adopts plug disturbing flow device raising heat transfer property in the oil duct; Flow along spiral aluminium strip generation flow-disturbing and vortex through oil; Strengthen the disturbance in boundary layer, destroy the boundary layer, strengthen the heat transfer of oily side; Improve the heat transfer property of Natural Circulation oil-filled transformer radiator, can be used for middle-size and small-size Natural Circulation oil-filled transformer.
Background technology
When 1, oil-filled transformer moved, the heat that parts losses such as inner winding, iron core produce must get and in time dispel the heat, in order to avoid temperature rise directly influences the life-span of winding insulation material.At 20KVA and following oil-filled transformer, its planomural fuel tank itself just can dissipate heat and need not to establish in addition cooling device for capacity.But for the transformer of larger capacity, general capacity just can consider to adopt cooling device greater than the oil-filled transformer of 50KVA.For middle-size and small-size Natural Circulation oil-filled transformer, available gilled radiator heat radiation.
2, common gilled radiator is made up of a plurality of fin, and each fin is that two assembly weldings become a slice fin, and then assembly welding becomes gilled radiator after being pressed into the flute profile oil duct by sheet metal.Existing radiator oil duct because the viscosity of oil is big, forms thicker boundary layer, makes that the heat exchange efficiency of fin is lower.
3, in the Natural Circulation oil-immersed type transformer gilled radiator system, the circulation power of oil is the density contrast that causes of the temperature difference between oil reservoir up and down, and the viscosity of oil is big; Thereby the flow velocity of oily Natural Circulation is little, flows to be laminar condition, and the convection transfer rate between oil and radiator inwall is little; Heat transfer between gilled radiator outer wall and surrounding air is the complex heat transfer of convection current and radiation; Because sheet wall spacing is very little, heat transfer condition is relatively poor, and heat transfer coefficient is also very little.Therefore, oil-filled transformer gilled radiator overall heat-transfer coefficient is little, and heat-sinking capability is little.
Summary of the invention
1, in order to overcome the deficiency of prior art, the purpose of this invention is to provide a kind of gilled radiator.This radiator oil duct inner boundary layer disturbance increases, and radiator oil side effective heat transfer coefficient is increased, and can satisfy the requirement of middle-size and small-size Natural Circulation oil-filled transformer.
2, the objective of the invention is to realize through following technical scheme:
(1) a kind of gilled radiator comprises common fin, the spiral aluminium strip; It is characterized in that: in fin, adorn disturbing flow device in each oil duct; Described disturbing flow device, by an aluminium strip spiral coiled, the some aluminium strip flexibility is maximum with spot welding is fixed in the oil duct wall, and its curved shape cooperates the oil duct size, and the aluminium strip bending diameter is got 7 times of bandwidth.
(2) the present invention adopts mould to go out technology and produces disturbing flow device; And disturbing flow device is fixed with spot welding; When oil flows the oil duct of process radiator,, strengthen the disturbance of flow boundary layer along aluminium strip generation flow-disturbing and vortex; Strengthen the heat transfer of oily side, this kind radiator can be used for (the middle-size and small-size oil-filled transformer of 50KV ~ 100KV).
Description of drawings:
Fig. 1 is a structural representation of the present invention
The common fin of oil-in (1) solder joint (2) spiral disturbing flow device (3) oil-out (4) (5)
The specific embodiment:
The utility model is done detailed description according to accompanying drawing:
1, a kind of oil-filled transformer radiator of the present invention, its structure See Figure, this radiator comprise oil-in 1, solder joint 2, spiral disturbing flow device 3, oil-out 4 and common fin 5, with spot welding the spiral disturbing flow device are fixed in the oil duct.
2, adopt mould to go out two cooling fins that technology is produced common fin, turn to spirality with aluminium strip and make disturbing flow device.Adopt and fill cooling oil duct in the high pressure gas processes cooling fin between two block plates, with dot welding method disturbing flow device is fixed in the oil duct, two cooling monolithics that will be shaped then stitch weldering on the resistance seam welding machine, be processed into fin.When oil stream during through the oil duct of radiator, stream strengthens the disturbance in boundary layer along aluminium strip generation flow-disturbing and vortex, strengthens the heat transfer of oily side, and this kind radiator can be used for (the middle-size and small-size oil-filled transformer of 50KV ~ 100KV).
Claims (2)
1. a gilled radiator comprises fin, the spiral aluminium strip; It is characterized in that: in fin, adorn disturbing flow device in each oil duct.
2. gilled radiator according to claim 1; It is characterized in that: described disturbing flow device, by an aluminium strip spiral coiled, the some aluminium strip flexibility is maximum with spot welding is fixed in the oil duct wall; The aluminium strip curved shape cooperates the oil duct size, and its bending diameter is got 7 times of bandwidth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120434919 CN202614072U (en) | 2011-11-07 | 2011-11-07 | Plate radiator for natural cycle oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120434919 CN202614072U (en) | 2011-11-07 | 2011-11-07 | Plate radiator for natural cycle oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202614072U true CN202614072U (en) | 2012-12-19 |
Family
ID=47347762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120434919 Expired - Fee Related CN202614072U (en) | 2011-11-07 | 2011-11-07 | Plate radiator for natural cycle oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202614072U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280338A (en) * | 2014-06-05 | 2016-01-27 | 江苏圣塔电力设备有限公司 | Heat dissipation plate |
| CN105304276A (en) * | 2014-06-05 | 2016-02-03 | 江苏圣塔电力设备有限公司 | Radiator |
| RU2634167C1 (en) * | 2016-12-30 | 2017-10-24 | Общество с ограниченной ответственностью "НИЦ супер-ЭВМ и нейрокомпьютеров" | Radiator |
-
2011
- 2011-11-07 CN CN 201120434919 patent/CN202614072U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280338A (en) * | 2014-06-05 | 2016-01-27 | 江苏圣塔电力设备有限公司 | Heat dissipation plate |
| CN105304276A (en) * | 2014-06-05 | 2016-02-03 | 江苏圣塔电力设备有限公司 | Radiator |
| RU2634167C1 (en) * | 2016-12-30 | 2017-10-24 | Общество с ограниченной ответственностью "НИЦ супер-ЭВМ и нейрокомпьютеров" | Radiator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20131107 |