CN2310372Y - High-flux radiator for electric power transformer - Google Patents
High-flux radiator for electric power transformer Download PDFInfo
- Publication number
- CN2310372Y CN2310372Y CN 97236826 CN97236826U CN2310372Y CN 2310372 Y CN2310372 Y CN 2310372Y CN 97236826 CN97236826 CN 97236826 CN 97236826 U CN97236826 U CN 97236826U CN 2310372 Y CN2310372 Y CN 2310372Y
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- transformer
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Abstract
The utility model discloses a high-flux radiator for a power transformer. The utility model is composed of a transformer, a pipe fin heat exchanger and an oil conservator, the pipe fin heat exchanger is arranged above the transformer, and a horizontal pipe is vertically provided with radiating fins. The utility model adopts a peculiar oil circuit design, raises the circulatory dynamic force in natural convection of the transformer oil, raises the total coefficient of heat transmission, reduces the consumption of heat radiation materials, simplifies the manufacturing process and reduces the production cost, besides, the overloading ability of the transformer is strong and can meet the requirements of A-class insulation of the power transformer, and the utility model has high safety.
Description
The utility model relates to a kind of heat abstractor of power transformer, specifically the high-flux radiator of power transformer.
Power transformer (hereinafter to be referred as transformer) is the electric equipment that is used for changing the alternating voltage size.Transformer its internal loss that is in operation comprises iron loss and copper loss, and iron loss and copper loss are all emitted with form of heat, so the heat radiation of transformer, cooling are the prerequisites that guarantees the transformer operate as normal.The transformer heat radiation oil immersed types that adopt promptly by the closed cycle of transformer oil (being insulating oil), absorb the heat of iron core and coil and pass to coolant more.For the transformer of capacity less than 6300KVA, mainly take oil-immersed self-cooled to dispel the heat, promptly on the transformer tank shell, weld 1～3 layer radiating tube, radiating tube is identical with the fuel tank height.At present, the way of raising radiating efficiency commonly used has: in transformer, all reserve oil duct in iron core and the coil, guarantee the unimpeded of oil circuit and to effective absorption of heat.Outside transformer, according to different capabilities, the different type of cooling and take different measure: middle low capacity, external radiating tube or fin increased energetically; Jumbo, with oil pump transformer oil is implemented forced circulation (strong oil), with blower fan and water pump coolant (air or water) is carried out forced convertion.Oil tank of transformer and cooling system, manufacturing cost is more and more higher, and technology becomes increasingly complex.Chinese patent (88202418.3) discloses a kind of transformer radiator, its technical scheme is a weldering system fin on radiating tube, this mode is manufacturing cost high technology complexity not only, and radiating tube is still consistent with the fuel tank height, can't increase the circulation power of transformer oil, simultaneously because fin is difficult to tight the contact with the heat radiation oil pipe.
The purpose of this utility model is: the circulation power that increases insulating oil in the oil-immersed self cooled transformer; Reduce the quantity of oil-immersed self cooled transformer radiating tube, the manufacturing process route of simplified cooling system, reduce production costs, the range of application of oil mode is advanced to big capacity direction, and an alternative part contains oil-immersed forced-air cool, the forced oil-circulation cooled transformer of moving component (Pumps ﹠ Fans).
The purpose of this utility model is to realize like this.
A kind of power transformer with high-flux radiator, form by transformer, pipe wing heat exchanger and conservator, pipe wing heat exchanger places the top of transformer, the two ends of horizontal tube are respectively equipped with down oil collection box and last oil collection box, following oil collection box communicates with the transformer bottom by following oil pipe, and last oil collection box communicates with transformer top by last oil pipe; Vertical fixing has fin on the horizontal tube, and conservator communicates with following oil collection box.
Transformer is in service, and the inside and outside heat transfer of radiator all obtains efficient hardening.The inboard is because the raising of circulation power, circulation flux brings the raising of convective heat-transfer coefficient; The outside owing to install vertical radiating fin additional, has enlarged heat transfer area, has improved the heat release to air.The heat that insulating oil is drawn from iron core and coil is put to the heat of air and the conduction of fuel tank wall, radiation with radiator and to be reached balance for the heat of air, and the work of heat release system enters stable state.
The utlity model has following advantage: 1. creationary outer oil circuit design, the radiator height places the transformer top, has improved the circulation power of transformer oil when free convection widely.2. improve overall heat-transfer coefficient, reduce the use amount of heat sink material, the manufacturing process route of simplified cooling system reduces production costs, and makes the oil of transformer oil box top warm≤85 ℃.3. capability of overload is strong, the transformer that has high-flux radiator, in case because of overload occurs when overheated, the oil temperature rise of its fuel tank top also advances to radiator along riser, and circulation power increases immediately, the corresponding increasing of circulation flux of insulating oil, the overall heat-transfer coefficient and the heat transfer temperature difference of radiator increase, guarantee that heat sheds smoothly, system enters new stable state, thereby makes this transformer have stronger capability of overload.4. two cover fin-tube type heat exchangers are set up in parallel before and after, the upper and lower oil pipe symmetry arrangement of two covers, and the circulation route of transformer oil is shortened, and temperature field symmetrical distribution and gradient are less in the transformer, are convenient to the arrangement of transformer connection terminal simultaneously.
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model front view.
Fig. 3 is the utility model end view.
Embodiment:
Referring to Fig. 1～Fig. 3, a kind of high-flux radiator of power transformer, wing heat exchanger 9 and conservator 6 are formed by all means by transformer 1,2,2 by all means wing heat exchanger 9 be connected in parallel on the top of transformer 1, the two ends of horizontal tube 3 communicate with transformer 1 bottom by following oil pipe 2 for following oil collection box 4 and last oil collection box 7, following oil collection box 4, and last oil collection box 7 communicates with transformer 1 top by last oil pipe 8, vertical expanding has fin 5 on the horizontal tube 3, and conservator 6 communicates with the oil circuit of following oil collection box 4.During transformer work, the insulating oil that temperature raises in the transformer 1 will rise to oil collection box 7 along last oil pipe 8, when insulating oil flows in horizontal tube 3, heat distributes through fin 5, the insulating oil that temperature reduces collects in down oil collection box 4 and enters the bottom of transformer 1 by following oil pipe 2, continue to absorb the heat of transformer core and coil, insulating oil carries out closed cycle automatically.
Claims (2)
1, a kind of high-flux radiator of power transformer, form by transformer (1), pipe wing heat exchanger (9) and conservator (6), it is characterized in that managing the top that wing heat exchanger (9) places transformer (1), the two ends of horizontal tube (3) are respectively equipped with down oil collection box (4) and last oil collection box (7), following oil collection box (4) communicates by the following same transformer of oil pipe (2) (1) bottom, and last oil collection box (7) communicates by the same transformer of last oil pipe (8) (1) top.
2, the high-flux radiator of power transformer according to claim 1 is characterized in that the last vertical fixing of horizontal tube (3) has fin (5), and conservator (6) communicates with following oil collection box (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97236826 CN2310372Y (en) | 1997-08-13 | 1997-08-13 | High-flux radiator for electric power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97236826 CN2310372Y (en) | 1997-08-13 | 1997-08-13 | High-flux radiator for electric power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2310372Y true CN2310372Y (en) | 1999-03-10 |
Family
ID=33947604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97236826 Expired - Fee Related CN2310372Y (en) | 1997-08-13 | 1997-08-13 | High-flux radiator for electric power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2310372Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256264A (en) * | 2018-10-17 | 2019-01-22 | 上海南桥变压器有限责任公司 | vertical split type transformer |
-
1997
- 1997-08-13 CN CN 97236826 patent/CN2310372Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256264A (en) * | 2018-10-17 | 2019-01-22 | 上海南桥变压器有限责任公司 | vertical split type transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |