CN115331916B - Intelligent distribution transformer - Google Patents
Intelligent distribution transformer Download PDFInfo
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- CN115331916B CN115331916B CN202211250178.2A CN202211250178A CN115331916B CN 115331916 B CN115331916 B CN 115331916B CN 202211250178 A CN202211250178 A CN 202211250178A CN 115331916 B CN115331916 B CN 115331916B
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- 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
- H01F27/02—Casings
- H01F27/025—Constructional details relating to cooling
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- 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
- H01F27/085—Cooling by ambient air
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- 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
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to the technical field of transformers, and particularly provides an intelligent distribution transformer which comprises a transformer body and a heat dissipation cabinet body, wherein the transformer body is arranged in the heat dissipation cabinet body, the heat dissipation cabinet body comprises two mirror-image air inlet boxes and two mirror-image air outlet boxes, the air outlet boxes are communicated with the air inlet boxes, the bottom of the air inlet boxes is provided with an air inlet, and the top of the air outlet boxes is provided with an air outlet; air outlet department is provided with breather, breather includes the exhaust valve, piston rod and piston cylinder, the one end slidable mounting of piston rod is in the piston cylinder, the other end and the exhaust valve fixed connection of piston rod, the exhaust valve is used for sealing the air outlet, the rodless intracavity of piston cylinder has held temperature sensing liquid, volume expansion after the temperature sensing liquid heaies up, the exhaust valve is opened after the temperature sensing liquid through in the piston cylinder is heated and expanded, make the hot-air in the bellows in time discharge, when the temperature in the bellows is lower, the exhaust valve is closed, prevent that external dust debris from getting into in the bellows, keep out the interior cleanness of bellows.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to an intelligent distribution transformer.
Background
The transformer is a device for adjusting voltage, which changes output voltage by changing coil turn ratio, so that voltage meets the use requirements of different users, and is an indispensable electrical equipment, the current distribution transformer is designed for reducing transformer unit cost, the circuit breaker is not installed on the low-voltage side of the 10kV distribution transformer alone, when short-circuit fault occurs on the low-voltage side, the fault is cut off by fusing of a fuse, all loads are lost, but only the fuse is used, if overload occurs on the low-voltage side, the distribution transformer generates heat seriously, so that the insulation protection layer of the distribution transformer is endangered, even oil injection and explosion of the distribution transformer are realized, and the phenomenon that the distribution transformer burns out frequently occurs in the peak period of current power utilization load.
Patent document publication is CN 108766717A's a transformer heat dissipation casing, including the main casing body, the inside of the main casing body is equipped with the base, the upside fixedly connected with transformer of base, the first copper of positive fixedly connected with of transformer, the welding has first heat dissipation aluminum sheet on the first copper, the quantity of first heat dissipation aluminum sheet is three, the upside of transformer is equipped with the second copper, the upside welding of second copper has second heat dissipation aluminum sheet. The heat is dissipated through the second copper plate fixedly connected with the transformer, the second heat dissipation aluminum sheet is arranged on the upper portion of the second copper plate, the upper portion of the second heat dissipation aluminum sheet penetrates through the upper shell of the main shell, the upper portion of the main shell is located outside the main shell, the heat dissipation effect is better, the main shell is in a fully closed form, dust in the main shell is prevented from entering, and short circuit caused by dust entering in the main shell is prevented. However, when the transformer runs under a high load, the air circulation of the heat dissipation part is slow, so that the hot air cannot be discharged in time, and the heat accumulation of the heat generation part of the transformer is easy to be serious.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problem of serious local heating of the transformer, the invention provides an intelligent distribution transformer to solve the problem.
The technical scheme adopted by the invention for solving the technical problems is as follows: an intelligent distribution transformer comprises a transformer body and a heat dissipation cabinet body, wherein the transformer body is installed in the heat dissipation cabinet body, the heat dissipation cabinet body comprises two air inlet boxes in mirror symmetry and two air outlet boxes in mirror symmetry, the air outlet boxes are communicated with the air inlet boxes, the bottom of the air inlet boxes is provided with an air inlet, and the top of the air outlet boxes is provided with an air outlet; the air outlet is provided with air interchanger, air interchanger includes exhaust valve, piston rod and piston cylinder, the one end slidable mounting of piston rod is in the piston cylinder, the other end of piston rod with exhaust valve fixed connection, the exhaust valve is used for sealing the air outlet, the rodless intracavity of piston cylinder has held temperature sensing liquid, volume expansion after the temperature rise of temperature sensing liquid.
Preferably, a grid plate is fixed at the bottom of the exhaust valve, the grid plate extends into the air outlet box, a boss is arranged at the bottom of the grid plate, and the distance from the bottom of the exhaust valve to the upper surface of the boss is smaller than the length of a grid on the grid plate.
Preferably, the air outlet box and the air inlet box are both provided with heat dissipation plates, the heat dissipation plates are provided with a plurality of fins arranged side by side, the air outlet box is also internally provided with a temperature sensing cylinder, the end part of the temperature sensing cylinder penetrates through the plurality of fins and then is communicated with the rodless cavity of the piston cylinder, and the temperature sensing cylinder is filled with temperature sensing liquid.
Preferably, the end part of the exhaust valve is bent towards the air inlet box to form a bent part, a connecting rod is fixed on the bent part and extends into the air inlet box, and an intake valve is fixed at the bottom of the connecting rod and used for sealing the air inlet.
Preferably, axial flow fans are arranged in the two air inlet boxes, and the two axial flow fans are arranged along the opposite angles of the transformer body.
Preferably, the positions close to the two ends in the air outlet box are further provided with partition plates, the top of each partition plate is fixedly connected with the air outlet box, the bottom of each partition plate is separated from the air outlet box, and the axial flow fan is arranged between the side wall of the air outlet box and the partition plates.
Preferably, the upper part of the air inlet box and the upper part of the air outlet box are provided with air vents for communicating the air inlet box and the air outlet box.
Preferably, the axial flow fan is arranged below the air vent, and the axial flow fan is used for sucking air from the air inlet box into the air outlet box.
Preferably, a plurality of cooling fins are arranged on the outer wall of the air outlet box and the outer wall of the air inlet box.
The invention has the beneficial effects that firstly, the air inlet box and the air outlet box are arranged, the air inlet box and the air outlet box are communicated with each other, the bottom of the air inlet box is provided with an air inlet, the top of the air outlet box is provided with an air outlet, the air outlet is provided with an exhaust valve, the exhaust valve is opened after being heated and expanded through temperature sensing liquid in the piston cylinder, so that hot air in the air outlet box can be discharged in time, when the temperature in the air outlet box is lower, the exhaust valve is closed, external dust and sundries are prevented from entering the air outlet box, and the cleanness in the air outlet box is kept.
And secondly, an axial flow fan is arranged in the air outlet box, when the air inlet and the air outlet are closed, the axial flow fan drives air to circulate in the air outlet box and the air inlet box, so that the temperature of each part of the transformer body is kept balanced, hot air at the over-high temperature can be discharged in time, and after the air inlet and the air outlet are opened, the internal and external air exchange is accelerated through the axial flow fan, and the heat dissipation effect on the transformer body is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of a preferred embodiment of an intelligent distribution transformer of the present invention;
FIG. 2 is a schematic diagram of the internal structure of an intelligent distribution transformer of the present invention;
fig. 3 is a schematic structural diagram of an air inlet box and an air outlet box of an intelligent distribution transformer according to the present invention;
FIG. 4 is a schematic diagram of the structure of the intake valve of an intelligent distribution transformer of the present invention;
fig. 5 is a schematic structural view of a grid plate of an intelligent distribution transformer according to the present invention;
fig. 6 is a schematic structural diagram of an air interchanger of an intelligent distribution transformer according to the present invention.
Reference numerals: 1. a transformer body; 2. a heat dissipation cabinet body; 3. an air inlet box; 4. an air outlet box; 5. an air inlet; 6. an air outlet; 7. a ventilation device; 8. an exhaust valve; 9. a piston rod; 10. a piston cylinder; 11. a grid plate; 12. a boss; 13. a heat dissipation plate; 14. a temperature sensing cylinder; 15. a bent portion; 16. a connecting rod; 17. an intake valve; 18. an axial flow fan; 19. a partition plate; 20. a vent; 21. and a heat sink.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1 to 6, the present invention provides an embodiment of an intelligent distribution transformer, including a transformer body 1 and a heat dissipation cabinet 2, wherein the transformer body 1 is installed in the heat dissipation cabinet 2, the heat dissipation cabinet 2 includes two mirror-symmetric air inlet boxes 3 and two mirror-symmetric air outlet boxes 4, a plurality of cooling fins 21 are respectively disposed on outer walls of the air outlet boxes 4 and outer walls of the air inlet boxes 3, the heat dissipation cabinet 2 is cooled by the cooling fins 21, so as to prevent heat accumulation inside the heat dissipation cabinet 2 from affecting normal operation of the transformer, air vents 20 for communicating the air inlet boxes 3 with the air outlet boxes 4 are disposed on upper portions of the air inlet boxes 3 and the air outlet boxes 4, so that the air outlet boxes 4 and the air inlet boxes 3 are communicated with each other, air can freely flow inside the air outlet boxes 4 and the air inlet boxes 3, an air inlet 5 is disposed at a bottom of the air inlet boxes 3, an air outlet 6 is disposed on a top of the air outlet 6, so that hot air can smoothly flow from the air inlet 6 to the air outlet 6 again, and the air inlet 5 and the air outlet 6 are disposed at the same time, which are beneficial for natural circulation.
The air outlet 6 is provided with an air interchanger 7, the air interchanger 7 comprises an exhaust valve 8, a piston rod 9 and a piston cylinder 10, one end of the piston rod 9 is slidably mounted in the piston cylinder 10, the other end of the piston rod 9 is fixedly connected with the exhaust valve 8, the exhaust valve 8 is used for sealing the air outlet 6, and a temperature sensing liquid is contained in a rodless cavity of the piston cylinder 10, when the transformer operates under a low load, the temperature in the air outlet box 4 is not high, the piston rod 9 is collected into the piston cylinder 10, the exhaust valve 8 falls to the air outlet 6 and seals the air outlet 6, the air outlet 6 is shielded through the exhaust valve 8, impurities and dust can be prevented from falling into the air outlet box 4, the air outlet box 4 is kept clean, the phenomenon that the insulation of the transformer body 1 is influenced by excessive dust is avoided, when the temperature in the air outlet box 4 is too high due to high-load operation of the transformer, the temperature sensing liquid can be heated, the volume of the temperature sensing liquid expands, the temperature sensing liquid pushes the piston rod 9 to move upwards to jack the exhaust valve 8 in the expansion process, and then the air outlet 6 is opened, and hot air in the air outlet 4 rises and is discharged from the air outlet 6.
The bottom of the exhaust valve 8 is fixed with a grid plate 11, the grid plate 11 extends into the air outlet box 4, after the exhaust valve 8 seals the air outlet 6, the contact area between the grid plate 11 and hot air in the air outlet box 4 is larger, therefore, heat in the air outlet box 4 can be rapidly transmitted to the exhaust valve 8 through the grid plate 11, and heat exchange is carried out with the outside through the exhaust valve 8, so that partial heat dissipation effect can still be maintained after the exhaust valve 8 is closed, after the exhaust valve 8 is jacked up by the piston rod 9, one part of the grid plate 11 is positioned in the air outlet box 4, the other part is positioned outside the air outlet box 4, the hot air in the air outlet box 4 passes through the grid plate 11 and then is discharged from the air outlet 6, the grid plate 11 can filter the air outlet 6 after the air outlet 6 is opened, falling impurities are prevented from entering the air outlet box 4 from the air outlet 6 when the exhaust valve 8 is opened, the bottom of the grid plate 11 is provided with a boss 12, the distance from the bottom of the exhaust valve 8 to the upper surface of the boss 12 is smaller than the length of a grid on the grid plate 11, the boss 12 is arranged, the grid plate 11 is completely jacked up, one part of the air can still be smoothly kept outside the air outlet 4, and the air can be positioned outside the air outlet 4, and then circulate.
All be provided with heating panel 13 in going out bellows 4 and the air inlet case 3, a plurality of fins that set up side by side have on the heating panel 13, absorb the heat around transformer body 1 through heating panel 13 and fin, so as to dispel the heat to transformer body 1, still be provided with temperature sensing cylinder 14 in the air outlet case 4, the tip of temperature sensing cylinder 14 runs through behind a plurality of fins with the rodless chamber intercommunication of piston cylinder 10, the temperature sensing liquid has been held in the temperature sensing cylinder 14, absorb the heat in fin and the whole air outlet case 4 through temperature sensing cylinder 14, promote the sensitivity of piston cylinder 10 and piston rod 9, after making the temperature rise of optional position in the air outlet case 4, can both absorb the heat through the temperature sensing liquid, in time open exhaust valve 8 and dispel the heat, avoid the heat accumulation serious in the heat dissipation cabinet body 2.
The end part of the exhaust valve 8 is bent towards the air inlet box 3 to form a bent part 15, a connecting rod 16 is fixed on the bent part 15, the connecting rod 16 extends into the air inlet box 3, an air inlet valve 17 is fixed at the bottom of the connecting rod 16, the air inlet valve 17 is used for sealing the air inlet 5, the air inlet valve 17 and the exhaust valve 8 form a linkage effect through the connecting rod 16, when the exhaust valve 8 is opened, the air inlet valve 17 can be driven to be opened, so that air with lower external temperature can enter the air inlet box 3 from the air inlet 5, the air inlet box 3 and the air outlet box 4 are cooled, when the transformer runs under low load, because the heating is less, the piston rod 9 is retracted into the piston cylinder 10 at the moment, the air inlet valve 17 and the exhaust valve 8 are driven to be closed simultaneously, the exchange between the air inlet box 3 and the air outlet box 4 and external air is reduced, the cleanness in the air inlet box 3 and the air outlet box 4 is kept, and the insulation of the transformer is prevented from being influenced by excessive dust.
The axial flow fans 18 are arranged in the two air inlet boxes 3, the axial flow fans 18 are arranged below the air vents 20, the two axial flow fans 18 are arranged along the opposite corners of the transformer body 1, the two axial flow fans 18 drive the air in the air inlet boxes 3 and the air outlet boxes 4 to circulate, when the air inlet valves 17 and the air outlet valves 8 are closed, the axial flow fans 18 enable air to circulate between the air inlet boxes 3 and the air outlet boxes 4, further, the temperature of all positions in the heat dissipation cabinet body 2 is kept balanced, the phenomenon that the casing is prone to cracking due to uneven temperature is avoided, the sealing performance of the transformer body 1 is affected, meanwhile, hot air at a high temperature can be timely exhausted, when the air inlet valves 17 and the air outlet valves 8 are opened, the axial flow fans 18 suck air into the air outlet boxes 4 from the air inlet boxes 3, the air pressure in the air inlet boxes 3 is reduced, external low-temperature air naturally flows into the air inlet boxes 3 under the action of air pressure, more air is injected into the air outlet boxes 4, the air in the air inlet boxes 3 and the air outlet boxes 3 naturally flow into the air inlet boxes 3, the air outlet boxes 4, the air boxes 3 and the air exchange box can be timely, the heat dissipation effect of the transformer body can be prevented, the heat dissipation box can be accelerated, the heat dissipation effect that the heat dissipation effect of the transformer body 1 and the heat dissipation effect can be conducted, and the heat dissipation effect of the transformer body 1 can be improved.
The positions close to the two ends in the air outlet box 4 are further provided with partition plates 19, the top of each partition plate 19 is fixedly connected with the air outlet box 4, the bottom of each partition plate 19 is separated from the air outlet box 4, the axial flow fan 18 is arranged between the side wall of the air outlet box 4 and the partition plates 19, a wind path is formed through the partition plates 19, airflow entering the air outlet box 4 is guided, and accordingly air directly flows into the bottom of the air outlet box 4 after entering the air outlet box 4 and then leaves the air outlet box 4 after rising from the other side of the air outlet box 4, and in the process of moving along the wind path, dust particles mixed with the air can naturally fall into the bottom of the air outlet box 4, and the problem that the insulation performance is reduced due to the fact that the dust particles fly in the air outlet box 4 is avoided.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. The utility model provides an intelligent distribution transformer, includes transformer body (1), its characterized in that: the transformer is characterized by further comprising a heat dissipation cabinet body (2), wherein the transformer body (1) is installed in the heat dissipation cabinet body (2), the heat dissipation cabinet body (2) comprises two air inlet boxes (3) which are in mirror symmetry and two air outlet boxes (4) which are in mirror symmetry, the air outlet boxes (4) are communicated with the air inlet boxes (3), the bottom of the air inlet boxes (3) is provided with an air inlet (5), and the top of the air outlet boxes (4) is provided with an air outlet (6);
the air outlet (6) is provided with an air interchanger (7), the air interchanger (7) comprises an exhaust valve (8), a piston rod (9) and a piston cylinder (10), one end of the piston rod (9) is slidably mounted in the piston cylinder (10), the other end of the piston rod (9) is fixedly connected with the exhaust valve (8), the exhaust valve (8) is used for sealing the air outlet (6), a rodless cavity of the piston cylinder (10) is filled with temperature sensing liquid, and the temperature sensing liquid expands in volume after being heated;
a grid plate (11) is fixed at the bottom of the exhaust valve (8), the grid plate (11) extends into the air outlet box (4), a boss (12) is arranged at the bottom of the grid plate (11), and the distance from the bottom of the exhaust valve (8) to the upper surface of the boss (12) is smaller than the length of a grid on the grid plate (11).
2. An intelligent distribution transformer as claimed in claim 1, wherein: the air outlet box (4) and the air inlet box (3) are internally provided with heat dissipation plates (13), the heat dissipation plates (13) are provided with a plurality of fins which are arranged side by side, the air outlet box (4) is internally provided with a temperature sensing cylinder (14), the end part of the temperature sensing cylinder (14) penetrates through the plurality of fins and then is communicated with a rodless cavity of the piston cylinder (10), and the temperature sensing cylinder (14) is internally filled with temperature sensing liquid.
3. An intelligent distribution transformer as claimed in claim 1, wherein: the end part of the exhaust valve (8) faces towards the air inlet box (3) and is bent to form a bent part (15), a connecting rod (16) is fixed on the bent part (15), the connecting rod (16) extends into the air inlet box (3), an intake valve (17) is fixed at the bottom of the connecting rod (16), and the intake valve (17) is used for sealing the air inlet (5).
4. An intelligent distribution transformer as claimed in claim 1, wherein: axial flow fans (18) are arranged in the two air inlet boxes (3), and the two axial flow fans (18) are arranged along the opposite angles of the transformer body (1).
5. An intelligent distribution transformer as claimed in claim 4, wherein: the air outlet box is characterized in that partition plates (19) are further arranged at positions, close to the two ends, in the air outlet box (4), the top of each partition plate (19) is fixedly connected with the air outlet box (4), the bottom of each partition plate (19) is separated from the air outlet box (4), and the axial flow fan (18) is arranged between the side wall of the air outlet box (4) and the partition plates (19).
6. An intelligent distribution transformer as claimed in claim 5, wherein: and the upper part of the air inlet box (3) and the upper part of the air outlet box (4) are provided with air vents (20) for communicating the air inlet box (3) with the air outlet box (4).
7. An intelligent distribution transformer as claimed in claim 6, wherein: the axial flow fan (18) is arranged below the air vent (20), and the axial flow fan (18) is used for sucking air from the air inlet box (3) into the air outlet box (4).
8. An intelligent distribution transformer as claimed in claim 1, wherein: the outer wall of the air outlet box (4) and the outer wall of the air inlet box (3) are both provided with a plurality of radiating fins (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211250178.2A CN115331916B (en) | 2022-10-13 | 2022-10-13 | Intelligent distribution transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211250178.2A CN115331916B (en) | 2022-10-13 | 2022-10-13 | Intelligent distribution transformer |
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| CN115331916A CN115331916A (en) | 2022-11-11 |
| CN115331916B true CN115331916B (en) | 2023-02-03 |
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| CN202211250178.2A Active CN115331916B (en) | 2022-10-13 | 2022-10-13 | Intelligent distribution transformer |
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| CN115740811B (en) * | 2023-01-04 | 2023-04-28 | 成都市鸿侠科技有限责任公司 | Tooling for double-beam welding reinforcing ribs of skin test piece |
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| WO2014050053A1 (en) * | 2012-09-26 | 2014-04-03 | パナソニック株式会社 | Heat exchanging ventilation device |
| CN111403150A (en) * | 2020-04-28 | 2020-07-10 | 广东电网有限责任公司 | Transformer heat abstractor |
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| JP2002158475A (en) * | 2000-11-20 | 2002-05-31 | Fujitsu General Ltd | Hermetically sealed enclosure for planar display device |
| CN101516166B (en) * | 2008-02-22 | 2010-12-08 | 华为技术有限公司 | Horizontal insertion frame and communication cabinet |
| WO2011142685A2 (en) * | 2010-05-11 | 2011-11-17 | Vasiljevic Marko | Distribution meter cabinet with ventilation device for mounting on the posts, walls or on the stand to post on public areas, either independently or side-to-side |
| CN204946643U (en) * | 2015-08-28 | 2016-01-06 | 宜兴市熊仕环保科技有限公司 | A kind of denoising device for transformer |
| CN111917036A (en) * | 2020-08-07 | 2020-11-10 | 广东电网有限责任公司 | Terminal cabinet and distribution automation station terminal |
| CN112261850B (en) * | 2020-11-04 | 2023-03-28 | 马鞍山佳夫尼电气科技有限公司 | SVG room heat abstractor of booster station |
| CN114286570B (en) * | 2022-01-18 | 2022-12-16 | 徐州科亚机电有限公司 | Controller of electric vehicle |
| CN114649138A (en) * | 2022-05-03 | 2022-06-21 | 南通兴安源金属制品有限公司 | Transformer oil tank with phase change cooling protection |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014050053A1 (en) * | 2012-09-26 | 2014-04-03 | パナソニック株式会社 | Heat exchanging ventilation device |
| CN111403150A (en) * | 2020-04-28 | 2020-07-10 | 广东电网有限责任公司 | Transformer heat abstractor |
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