CN112086273A - Isolated evaporative cooling transformer - Google Patents
Isolated evaporative cooling transformer Download PDFInfo
- Publication number
- CN112086273A CN112086273A CN202011093274.1A CN202011093274A CN112086273A CN 112086273 A CN112086273 A CN 112086273A CN 202011093274 A CN202011093274 A CN 202011093274A CN 112086273 A CN112086273 A CN 112086273A
- Authority
- CN
- China
- Prior art keywords
- transformer
- cooling
- evaporative cooling
- evaporator
- isolated
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 37
- 239000002826 coolant Substances 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/18—Liquid cooling by evaporating liquids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention relates to an isolated evaporative cooling transformer, which comprises an iron core, a coil, a clamping piece, a pulling plate, an oil tank, a shielding net, an evaporator, a condenser and a fan, wherein a cooling medium is stored in the evaporator, and an inlet and an outlet are arranged in the evaporator and are embedded into thin layers protruding outwards at the top of the oil tank and the upper half part of the side wall in the transformer; the iron core, the coil, the pulling plate and the clamping piece are all immersed in transformer oil; the condenser is of a plate structure; the side of the cooling area, which is flush with the inner wall of the oil tank, adopts the metal mesh plate as the shielding net, and the metal mesh plate and the oil tank are grounded together, so that insulation and cooling are completely separated, and the insulation capability is ensured not to be reduced even if the evaporative cooling medium is subjected to phase change.
Description
Technical Field
The invention relates to an isolated evaporative cooling transformer.
Background
The development of the transformer cooling technology is a key link for accelerating the increase of the capacity of the transformer, and the operating temperature of the transformer influences the load loss and the service life to a great extent. The traditional cooling modes such as air cooling, oil cooling and the like are mature in technology and are widely applied. However, as the capacity of the transformer increases, the conventional cooling method is gradually difficult to meet the actual heat dissipation requirement of the transformer.
A common transformer cooling method is classified into physical states of a refrigerant, and in both of natural cooling and forced cooling, a cooling medium is heated to absorb heat to cool a transformer body. The basic principle of the evaporative cooling transformer is that the phase change heat absorption of the medium is utilized to achieve the effect of temperature reduction. The refrigerant with low boiling point is taken as a medium, the heat generated by the transformer equipment is taken away by utilizing the latent heat of vaporization absorbed by the refrigerant during phase change, the medium after heat absorption and phase change is liquefied after being cooled by the condenser, and the medium is repeatedly circulated to reduce the temperature of each part. Because latent heat of vaporization is far greater than specific heat, the heat exchange mode has large cooling capacity and high efficiency.
Disclosure of Invention
Object of the Invention
The invention aims to provide an isolated evaporative cooling transformer, which completely separates an evaporative cooling system from an insulation system so as to ensure that the insulation capacity is not reduced even if the evaporative cooling medium undergoes phase change.
Technical scheme
The technical scheme of the invention is as follows: an isolated evaporative cooling transformer. The overall structure includes iron core, coil, folder, arm-tie, oil tank, shielding net, evaporimeter, condenser, fan, its characterized in that comprises evaporimeter, condenser, fan evaporation cooling system, wherein: the condenser adopts a plate structure; the evaporator is provided with a cooling medium inlet and two cooling medium outlets; the evaporator is embedded into the thin layer which protrudes outwards from the oil tank; the evaporator is arranged at the top of the oil tank inside the transformer and at the upper half part of the side wall.
Foretell isolated evaporative cooling transformer, in order to avoid the oil tank inner wall to produce most advanced, the one side of cooling space and oil tank inner wall parallel and level adopts the metal mesh board to carry out electric field shielding, with oil tank ground connection together, thoroughly solves the high-voltage insulation problem of coolant.
According to the isolated evaporative cooling transformer, the larger the temperature difference between the evaporative cooling medium and the oil temperature is, the more heat is taken away by the evaporative cooling medium through phase change, and the higher the overall cooling performance of the transformer is.
Advantages and effects
Compared with the prior art, the invention has the advantages and positive effects that:
the coil and the iron core are immersed in the transformer oil with high heat conduction and high insulation, and heat is transferred to the low-boiling-point evaporative cooling medium in the evaporator through the transformer oil, so that the effects of uniform cooling and high cooling efficiency are achieved. And cooling and insulation are completely separated, so that the insulation capacity is not reduced while the cooling is efficient. Simple structure and easy maintenance.
Drawings
FIG. 1 is a schematic view of an isolated evaporative cooling transformer according to the present invention
Description of reference numerals:
1. clamp, 2 iron core, 3 pulling plate, 4 evaporator, 5 cooling medium outlet, 6 condenser, 7 fan, 8 shielding net, 9 cooling medium inlet, 10 coil
Detailed Description
The invention provides an isolated evaporative cooling transformer, which is further described with reference to the accompanying drawings.
As shown in fig. 1, the clamping piece 1, the iron core 2, the pulling plate 3 and the coil 10 are all immersed in transformer oil; the evaporator 4 is arranged at the top of the oil tank and the upper half part of the side wall, and the evaporator 4 is provided with a cooling medium inlet 9 and two cooling medium outlets 5; one side of the cooling area, which is flush with the inner wall of the oil tank, adopts a metal mesh plate as a shielding net 8; the condenser 6 adopts a sheet structure; the fan 7 is arranged outside to accelerate the condensation of the cooling medium.
In the invention, the transformer oil absorbs the heat of the iron core 2 and the coil 10, the oil temperature rises and transfers the heat to the evaporative cooling medium in the evaporator 4, the phase change starts after the temperature of the cooling medium rises to the boiling point, saturated steam is discharged from two cooling medium outlets 5 at the top of the evaporator 4 and enters the condenser 6 through an external cooling pipeline, the temperature is reduced, the saturated steam is condensed into liquid, and the liquid returns to the evaporator 4 through a cooling medium inlet 9 to complete the circulation.
Claims (3)
1. The utility model provides an isolated evaporative cooling transformer, overall structure includes unshakable in one's determination, coil, folder, arm-tie, oil tank, shielding net, evaporimeter, condenser, fan, its characterized in that comprises evaporimeter, condenser, fan evaporative cooling system, wherein: the condenser adopts a plate structure; the evaporator is provided with a cooling medium inlet and two cooling medium outlets; the fan is installed at the bottom of the condenser.
2. An isolated evaporative cooling transformer as recited in claim 1, wherein the evaporator is disposed within a thin layer projecting outwardly from the top and upper portions of the side walls of the tank within the transformer.
3. An isolated evaporative cooling transformer as recited in claim 1, wherein the side of the cooling zone that is flush with the inner wall of the tank is shielded by a mesh of metal mesh that is grounded to the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011093274.1A CN112086273A (en) | 2020-10-14 | 2020-10-14 | Isolated evaporative cooling transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011093274.1A CN112086273A (en) | 2020-10-14 | 2020-10-14 | Isolated evaporative cooling transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112086273A true CN112086273A (en) | 2020-12-15 |
Family
ID=73730183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011093274.1A Pending CN112086273A (en) | 2020-10-14 | 2020-10-14 | Isolated evaporative cooling transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112086273A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113470939A (en) * | 2021-06-18 | 2021-10-01 | 江苏新特变科技股份有限公司 | Cooling structure of dry-type transformer |
| CN115810469A (en) * | 2023-02-06 | 2023-03-17 | 江苏安靠智能输电工程科技股份有限公司 | Evaporative cooling transformer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588588A (en) * | 2004-07-23 | 2005-03-02 | 马兴凯 | Evaporation and cooling power transformer for electric engine |
| CN101819858A (en) * | 2010-04-23 | 2010-09-01 | 上官远定 | Shell type transformer utilizing evaporative cooling for heat radiation |
| CN209087552U (en) * | 2018-12-11 | 2019-07-09 | 杭州钱江电气集团股份有限公司 | A kind of structure of insulating oil duct of laminar winding |
| CN209149920U (en) * | 2019-01-08 | 2019-07-23 | 深圳市东盈电子有限公司 | It is a kind of with function of shielding and the high high-frequency electronic transformer of radiating efficiency |
-
2020
- 2020-10-14 CN CN202011093274.1A patent/CN112086273A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588588A (en) * | 2004-07-23 | 2005-03-02 | 马兴凯 | Evaporation and cooling power transformer for electric engine |
| CN101819858A (en) * | 2010-04-23 | 2010-09-01 | 上官远定 | Shell type transformer utilizing evaporative cooling for heat radiation |
| CN209087552U (en) * | 2018-12-11 | 2019-07-09 | 杭州钱江电气集团股份有限公司 | A kind of structure of insulating oil duct of laminar winding |
| CN209149920U (en) * | 2019-01-08 | 2019-07-23 | 深圳市东盈电子有限公司 | It is a kind of with function of shielding and the high high-frequency electronic transformer of radiating efficiency |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113470939A (en) * | 2021-06-18 | 2021-10-01 | 江苏新特变科技股份有限公司 | Cooling structure of dry-type transformer |
| CN113470939B (en) * | 2021-06-18 | 2024-02-02 | 江苏新特变科技股份有限公司 | Cooling structure of dry-type transformer |
| CN115810469A (en) * | 2023-02-06 | 2023-03-17 | 江苏安靠智能输电工程科技股份有限公司 | Evaporative cooling transformer |
| CN115810469B (en) * | 2023-02-06 | 2023-04-25 | 江苏安靠智能输电工程科技股份有限公司 | Evaporation cooling transformer |
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