CN211125304U - Novel cooling structure of dry-type transformer - Google Patents
Novel cooling structure of dry-type transformer Download PDFInfo
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- CN211125304U CN211125304U CN202020088788.7U CN202020088788U CN211125304U CN 211125304 U CN211125304 U CN 211125304U CN 202020088788 U CN202020088788 U CN 202020088788U CN 211125304 U CN211125304 U CN 211125304U
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- 238000001816 cooling Methods 0.000 title claims abstract description 211
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 138
- 239000000110 cooling liquid Substances 0.000 claims abstract description 56
- 239000007788 liquid Substances 0.000 claims description 45
- 238000004891 communication Methods 0.000 claims description 22
- 241000270295 Serpentes Species 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 21
- 239000002826 coolant Substances 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 16
- 230000017525 heat dissipation Effects 0.000 abstract description 10
- 238000004804 winding Methods 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The utility model discloses a cooling structure of a novel dry-type transformer, which comprises a transformer body, a shell arranged outside the transformer body and a water cooling tank; the water cooling tank is internally provided with cooling liquid, the water cooling tank is internally provided with a water cooling pipe, two ends of the water cooling pipe respectively extend to be communicated with the shell, and one end of the water cooling pipe is provided with an exhaust fan. The cooling device of the utility model can send hot air back after being cooled continuously in the process of generating heat by the transformer body to form cooling circulation, thereby effectively ensuring the heat dissipation effect of the transformer body, simultaneously, the cooling process is indirect cooling, no coolant is mixed, the coolant is not required to be processed, the structure of the cooling device is simplified, and the device cost is reduced; and the circulating cooling device is used for cooling the cooling liquid in a circulating manner, and when heat is exchanged to the cooling liquid, the circulating cooling device is started to perform heat dissipation treatment on the cooling liquid, so that the cooling effect of the cooling liquid is ensured.
Description
Technical Field
The utility model relates to a transformer technical field, in particular to novel cooling structure of dry-type transformer.
Background
With the rapid development of economic construction in China, the electric load of urban and rural areas is continuously increased, and dry-type transformers which are free of oil, fireproof, long in service life, energy-saving, low in noise, simple in maintenance, safe and reliable are more and more widely applied. According to the related information, the dry-type transformer has been rapidly developed in recent 20 years, particularly in the distribution transformer, the proportion of the dry-type transformer is increasing, although China starts late, the proportion of the dry-type transformer is about 30% -40% in large and medium cities in recent years, and the safe operation and the service life of the dry-type transformer are greatly dependent on the safety and the reliability of the insulation of the transformer winding. The iron core and the winding in the dry type transformer are main heating bodies, the temperature of the surrounding medium is increased except the temperature of the iron core and the winding is increased by the heat generated by the iron core and the winding, and when the temperature of the winding exceeds the heat-resistant limit of the insulating material, the insulating material is damaged, which is one of main reasons for causing the transformer to be incapable of working normally, and the service life of the transformer is shortened.
The main cooling modes of the existing dry-type transformer are water cooling and air cooling, and in terms of water cooling, hot air generated by the dry-type transformer is directly pumped into cooling water for cooling, and the cooled air is sent back after cooling. Such an approach has the following problems: 1. the cooled air carries cooling water, so that the transformer is prevented from being damaged by the cooling water, and the cooled air needs to be dried when returned, so that the complexity of the cooling device is increased, and the drying effect cannot be guaranteed; 2. along with the increase of the number of times of hot air cooling, the temperature of the cooling water rises, so that the cooling effect is reduced, and finally, the cooling effect of the transformer is directly influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, and provides a novel cooling structure of a dry-type transformer, in the process of generating heat by a transformer body, hot air is continuously cooled and then sent back to form cooling circulation, so that the heat dissipation effect of the transformer body can be effectively ensured, meanwhile, the cooling process is indirect cooling, no cooling liquid is mixed, no treatment is carried out on the cooling liquid, the structure of a cooling device is simplified, and the cost of the device is reduced; and the circulating cooling device is used for cooling the cooling liquid in a circulating manner, and when heat is exchanged to the cooling liquid, the circulating cooling device is started to perform heat dissipation treatment on the cooling liquid, so that the cooling effect of the cooling liquid is ensured.
The purpose of the utility model is realized through the following technical scheme:
a cooling structure of a novel dry-type transformer comprises a transformer body, a shell and a water cooling tank, wherein the shell and the water cooling tank are arranged outside the transformer body; the cooling liquid is arranged in the water cooling box, a water cooling pipe is arranged in the water cooling box, two ends of the water cooling pipe respectively extend to be communicated with the shell, and an exhaust fan is arranged at one end of the water cooling pipe;
the water cooling tank is connected with a circulating cooling device for cooling the cooling liquid in a circulating manner.
Furthermore, the water cooling pipe is arranged at the part of the water cooling box and is in a snake shape.
Further, the circulative cooling device include intercommunication case and suction pump, be equipped with the coolant liquid in the intercommunication incasement, and the liquid level flushes in intercommunication incasement liquid level and the cooling box, the bottom of intercommunication case side through communicating pipe with the bottom intercommunication of water-cooling box side, the suction pump sets up communicate the incasement, just the play liquid end of suction pump is located the top of water-cooling box.
Furthermore, a first cooling plate, a second cooling plate and a third cooling plate are sequentially arranged in the water cooling tank from top to bottom, the first cooling plate is positioned below the water outlet end of the water suction pump, the first cooling plate is obliquely and upwards arranged from the position far away from the water outlet end of the water suction pump to the position close to the water outlet end of the water suction pump, and a plurality of first water outlet holes are formed in the lower end of the first cooling plate; the second cooling plate is arranged in an upward inclined manner from the position close to the water outlet end of the water suction pump to the position far away from the water outlet end of the water suction pump, and a plurality of second water outlet holes are formed in the lower end of the second cooling plate; the third cooling plate upwards sets up by keeping away from the direction slope that suction pump outlet end orientation was close to suction pump outlet end, and the lower one end of third cooling plate is equipped with a plurality of third apopores.
Furthermore, the communicating box is connected with a water replenishing box through a water replenishing pipe, the lowest liquid level of the water replenishing box is higher than the highest liquid level of the communicating box, the water replenishing pipe is located below the liquid level of the communicating box, a ball float valve is arranged on the water replenishing pipe, and a ball float of the ball float valve is arranged in the communicating box.
The utility model has the advantages that:
1) the cooling device of the utility model can send hot air back after being cooled continuously in the process of generating heat by the transformer body to form cooling circulation, thereby effectively ensuring the heat dissipation effect of the transformer body, simultaneously, the cooling process is indirect cooling, no coolant is mixed, the coolant is not required to be processed, the structure of the cooling device is simplified, and the device cost is reduced; and the circulating cooling device is used for cooling the cooling liquid in a circulating manner, and when heat is exchanged to the cooling liquid, the circulating cooling device is started to perform heat dissipation treatment on the cooling liquid, so that the cooling effect of the cooling liquid is ensured.
2) The arranged communicating box is communicated with the cooling box to form a communicating device structure, and the cooling liquid which is not heated in the communicating box is sent into the cooling box by using the water suction pump, so that the cooling effect of a cooling pipe in the cooling box is ensured; when the coolant temperature of the communication incasement risees, the process of suction pump with the interior liquid suction cooler bin of communication incasement, the coolant liquid can carry out the heat exchange with the air, and then cools off automatically, guarantees from this that the coolant liquid of inputing to the cooler bin has fine cooling effect.
3) The first cooling plate, the second cooling plate and the third cooling plate are arranged to cool the cooling liquid for three times, the heat exchange area is increased to three times of the original area, and the cooling effect is better.
4) The ball float valve and the water replenishing tank can automatically replenish cooling liquid into the communicating tank and the cooling tank, manual replenishment is not needed, and the use is convenient.
Drawings
Fig. 1 is a schematic view of the overall structure of a cooling structure of a novel dry-type transformer in an embodiment of the present invention;
fig. 2 is a schematic overall structure diagram of a cooling structure with a first cooling plate, a second cooling plate and a third cooling plate in the embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a first cooling plate according to an embodiment of the present invention;
fig. 4 is a schematic view of the overall structure of the cooling structure with a water replenishing tank in the embodiment of the present invention;
in the figure, 1, a transformer body; 2. a housing; 3. a water cooling tank; 4. cooling liquid; 5. a water-cooled tube; 6. an exhaust fan; 7. a circulating cooling device; 8. a communicating tank; 9. a water pump; 10. a communicating pipe; 11. a first cooling plate; 12. a second cooling plate; 13. a third cooling plate; 14. a first water outlet; 15. a second water outlet; 16. a third water outlet; 17. a water replenishing pipe; 18. a water replenishing tank; 19. a float valve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution:
example (b):
as shown in fig. 1, a cooling structure of a novel dry-type transformer includes a transformer body 1, a housing 2 disposed outside the transformer body 1, and a water cooling tank 3; a cooling liquid 4 is arranged in the water cooling tank 3, a water cooling pipe 5 is arranged in the water cooling tank 3, two ends of the water cooling pipe 5 respectively extend to be communicated with the shell 2, and an exhaust fan 6 is arranged at one end of the water cooling pipe 5;
the water cooling tank 3 is connected with a circulating cooling device 7 for circulating cooling of the cooling liquid 4.
Wherein, the cooling liquid 4 can be but is not limited to water, the exhaust fan 6 is connected with a power supply, and the connection mode is a conventional technical means in the field, and is not described herein.
The working principle is as follows: the heat generated by the transformer body 1 is dissipated in the air between the housing and the transformer body 1, so that the air in the transformer body 1 becomes hot. The exhaust fan 6 sucks hot air into the water cooling pipe 5, and the hot air is cooled by the water cooling pipe 5. The cooling process of the hot air is indirect cooling and is not directly contacted with the hot air. The cooled air is sent into the casing 2 again to exchange heat with the transformer body 1. In the process of generating heat by the transformer body 1, hot air is continuously cooled and then returned to form cooling circulation, so that the heat dissipation effect of the transformer body 1 is effectively guaranteed, meanwhile, the cooling process is indirect cooling, the cooling liquid 4 cannot be mixed with, the cooling liquid 4 does not need to be treated, the structure of a cooling device is simplified, and the device cost is reduced. And the arranged circulating cooling device 7 is used for circularly cooling the cooling liquid 4, and when heat is exchanged to the cooling liquid 4, the circulating cooling device 7 is started to perform heat dissipation treatment on the cooling liquid 4, so that the cooling effect of the cooling liquid 4 is ensured.
The cooling device of the utility model can send hot air back after being cooled continuously in the process of generating heat by the transformer body 1 to form cooling circulation, thereby effectively ensuring the heat dissipation effect of the transformer body 1, simultaneously, the cooling process is indirect cooling, and the cooling liquid 4 can not be mixed with, and the cooling liquid 4 is not required to be processed, thereby simplifying the structure of the cooling device and reducing the device cost; and the arranged circulating cooling device 7 is used for circularly cooling the cooling liquid 4, and when heat is exchanged to the cooling liquid 4, the circulating cooling device 7 is started to perform heat dissipation treatment on the cooling liquid 4, so that the cooling effect of the cooling liquid 4 is ensured.
Further, as shown in fig. 1, the water cooling pipe 5 is disposed in a serpentine shape in a portion of the water cooling tank 3. Snakelike water-cooled tube 5 can increase the area of contact of water-cooled tube 5 and coolant liquid 4, and then the heat exchange area when increase hot-air and the 4 heat exchanges of coolant liquid is favorable to improving the radiating effect.
Further, as shown in fig. 2, the circulating cooling device 7 includes a communicating tank 8 and a water pump 9, the inside of the communicating tank 8 is provided with the cooling liquid 4, the liquid level inside the communicating tank 8 is flush with the liquid level inside the cooling tank, the bottom of the side surface of the communicating tank 8 is communicated with the bottom of the side surface of the water cooling tank 3 through a communicating pipe 10, the water pump 9 is arranged inside the communicating tank 8, and the liquid outlet end of the water pump 9 is located above the water cooling tank 3. Wherein, the liquid outlet end of the water pump 9 is connected to the upper part of the water cooling tank 3 through a water pipe, and the conventional technical means in the field are specifically set, which is not described herein; the water pump 9 is connected to the power source in a manner that is conventional in the art and will not be described herein.
The bottom of the communicating box 8 is communicated with the bottom of the water cooling box 3 to form a communicating vessel structure. When the water pump 9 conveys the cooling liquid 4 which is not heated in the communication box 8 to the water cooling box 3, the cooling liquid 4 in the cooling box automatically flows into the communication box 8 due to liquid level difference, so that the liquid level of the communication box 8 and the liquid level of the water cooling box 3 are ensured to be the same in the process, and the cooling liquid 4 in the water cooling box 3 automatically flows into the communication box 8. And when coolant 4 in the cooler bin all flowed into in the communicating box 8, when leading to coolant 4 in the communicating box 8 also to heat up, the process of liquid suction in the communicating box 8 of suction pump 9 suction cooler bin, coolant 4 flows out by the play liquid end of suction pump 9, because this play liquid end is located the top of cooler bin, consequently at the whereabouts process, coolant 4 can carry out the heat exchange with the air, and then cools off automatically, guarantees from this that the coolant 4 of inputing to the cooler bin has fine cooling effect.
The arranged communicating box 8 is communicated with the cooling box to form a communicating device structure, and the cooling liquid 4 which is not heated in the communicating box 8 is sent into the cooling box by using the water suction pump 9, so that the cooling effect of a cooling pipe in the cooling box is ensured; when 4 temperature rising of coolant liquid in the communication box 8, the process of liquid suction cooling box in the suction pump 9 will communication box 8, and coolant liquid 4 can carry out the heat exchange with the air, and then cools off automatically, guarantees from this that the coolant liquid 4 of inputing to the cooling box has fine cooling effect.
Further, as shown in fig. 2 and 3, a first cooling plate 11, a second cooling plate 12 and a third cooling plate 13 are sequentially arranged in the water cooling tank 3 from top to bottom, the first cooling plate 11 is located below the water outlet end of the water pump 9, the first cooling plate 11 is obliquely and upwardly arranged from the position far away from the water outlet end of the water pump 9 to the position close to the water outlet end of the water pump 9, and a plurality of first water outlet holes 14 are formed in the lower end of the first cooling plate 11; the second cooling plate 12 is arranged in an upward inclined manner from the position close to the water outlet end of the water suction pump 9 to the position far away from the water outlet end of the water suction pump 9, and a plurality of second water outlet holes 15 are formed in the lower end of the second cooling plate 12; the third cooling plate 13 is inclined upwards by keeping away from the direction that the water outlet end of the water suction pump 9 faces the water outlet end of the water suction pump 9, and the lower end of the third cooling plate 13 is provided with a plurality of third water outlet holes 16.
When the cooling liquid 4 falls from the liquid outlet end of the water pump 9, the cooling liquid firstly falls onto the first cooling plate 11, flows downwards along the inclined direction of the first cooling plate 11 under the action of gravity, and falls onto the second cooling plate 12 through the first water outlet hole 14 when flowing to the lowest point. When the cooling liquid 4 falls onto the second cooling plate 12, it flows downward along the inclined direction of the second cooling plate 12 under the action of gravity, and when it flows to the lowest point, it falls onto the third cooling plate 13 through the second water outlet 15. When the cooling liquid 4 falls onto the third cooling plate 13, the cooling liquid flows downwards along the inclined direction of the third cooling plate 13 under the action of gravity, and when the cooling liquid flows to the lowest point of the third cooling plate, the cooling liquid falls into the cooling liquid 4 in the cooling box through the third water outlet 16. The first cooling plate 11, the second cooling plate 12 and the third cooling plate 13 are arranged to cool the cooling liquid 4 for three times, so that the heat exchange area is increased to three times, and the cooling effect is better.
Further, as shown in fig. 4, the communication tank 8 is connected to a water replenishing tank 18 through a water replenishing pipe 17, a lowest liquid level of the water replenishing tank 18 is higher than a highest liquid level of the communication tank 8, the water replenishing pipe 17 is located below the liquid level of the communication tank 8, specifically 5-8cm below the liquid level, the cooling liquid 4 is provided in the water replenishing tank 18 according to actual conditions, a ball float valve 19 is provided on the water replenishing pipe 17, and a ball float of the ball float valve 19 is provided in the communication tank 8.
The purpose of the water supply pipe 17 being disposed below the liquid level of the communication tank 8 is to prevent the float valve 19 from opening to supply the coolant 4 into the communication tank 8 when the suction pump 9 pumps the coolant 4 from the communication tank 8.
When the cooling liquid 4 in the cooling tank and the communication tank 8 is consumed due to evaporation and the like, the liquid level in the cooling tank drops, and the floating ball of the floating ball valve 19 drops along with the liquid level; when the liquid level drops below the water replenishing pipe 17, the ball float valve 19 is opened under the action of the ball float, and then the liquid is replenished into the communication tank 8 and the cooling tank. When the liquid level rises to a certain height, the floating ball rises along with the liquid level, so that the floating ball valve 19 is closed, and the liquid replenishing is stopped.
The arranged ball float valve 19 and the water replenishing tank 18 can automatically replenish the cooling liquid 4 into the communicating tank 8 and the cooling tank, manual replenishment is not needed, and the use is convenient.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (5)
1. The utility model provides a novel cooling structure of dry-type transformer which characterized in that: the transformer comprises a transformer body, a shell and a water cooling tank, wherein the shell and the water cooling tank are arranged outside the transformer body; the cooling liquid is arranged in the water cooling box, a water cooling pipe is arranged in the water cooling box, two ends of the water cooling pipe respectively extend to be communicated with the shell, and an exhaust fan is arranged at one end of the water cooling pipe;
the water cooling tank is connected with a circulating cooling device for cooling the cooling liquid in a circulating manner.
2. The cooling structure of the novel dry-type transformer according to claim 1, wherein: the water cooling pipe is arranged at the part of the water cooling box and is in a snake shape.
3. The cooling structure of the novel dry-type transformer according to claim 2, wherein: the circulating cooling device comprises a communication box and a water suction pump, wherein cooling liquid is arranged in the communication box, the liquid level in the communication box is flush with the liquid level in the cooling box, the bottom of the side face of the communication box is communicated with the bottom of the side face of the water cooling box through a communicating pipe, the water suction pump is arranged in the communication box, and the liquid outlet end of the water suction pump is located above the water cooling box.
4. The cooling structure of the novel dry-type transformer according to claim 3, wherein: a first cooling plate, a second cooling plate and a third cooling plate are sequentially arranged in the water cooling tank from top to bottom, the first cooling plate is positioned below the water outlet end of the water suction pump, the first cooling plate is obliquely and upwards arranged from the position far away from the water outlet end of the water suction pump to the position close to the water outlet end of the water suction pump, and a plurality of first water outlet holes are formed in the lower end of the first cooling plate; the second cooling plate is arranged in an upward inclined manner from the position close to the water outlet end of the water suction pump to the position far away from the water outlet end of the water suction pump, and a plurality of second water outlet holes are formed in the lower end of the second cooling plate; the third cooling plate upwards sets up by keeping away from the direction slope that suction pump outlet end orientation was close to suction pump outlet end, and the lower one end of third cooling plate is equipped with a plurality of third apopores.
5. The novel cooling structure of dry-type transformer as claimed in claim 4, wherein: the water replenishing device is characterized in that the communicating box is connected with a water replenishing box through a water replenishing pipe, the lowest liquid level of the water replenishing box is higher than the highest liquid level of the communicating box, the water replenishing pipe is located below the liquid level of the communicating box, a ball float valve is arranged on the water replenishing pipe, and a ball float of the ball float valve is arranged in the communicating box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020088788.7U CN211125304U (en) | 2020-01-16 | 2020-01-16 | Novel cooling structure of dry-type transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020088788.7U CN211125304U (en) | 2020-01-16 | 2020-01-16 | Novel cooling structure of dry-type transformer |
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| Publication Number | Publication Date |
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| CN211125304U true CN211125304U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020088788.7U Active CN211125304U (en) | 2020-01-16 | 2020-01-16 | Novel cooling structure of dry-type transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112863821A (en) * | 2021-03-13 | 2021-05-28 | 楼晓丽 | Oil-immersed transformer and use method thereof |
| CN113178310A (en) * | 2021-04-19 | 2021-07-27 | 吴武平 | Transformer with internal heat exchange system and heat exchange method thereof |
-
2020
- 2020-01-16 CN CN202020088788.7U patent/CN211125304U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112863821A (en) * | 2021-03-13 | 2021-05-28 | 楼晓丽 | Oil-immersed transformer and use method thereof |
| CN113178310A (en) * | 2021-04-19 | 2021-07-27 | 吴武平 | Transformer with internal heat exchange system and heat exchange method thereof |
| CN113178310B (en) * | 2021-04-19 | 2022-09-06 | 通道锶鑫电子有限公司 | Transformer with internal heat exchange system and heat exchange method thereof |
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Address after: No. 488 Xingyuan 9th Road, Xinjin Industrial Park, Xinjin County, Chengdu City, Sichuan Province, 6114300 Patentee after: Sichuan Zhongxin General Electric Energy Co.,Ltd. Country or region after: China Address before: No. 488 Xingyuan 9th Road, Xinjin Industrial Park, Xinjin County, Chengdu City, Sichuan Province, 6114300 Patentee before: Sichuan Zhongxin General Electric Power Co.,Ltd. Country or region before: China |
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