CN111403152A - Radiator for oil-immersed transformer and transformer - Google Patents
Radiator for oil-immersed transformer and transformer Download PDFInfo
- Publication number
- CN111403152A CN111403152A CN202010267739.4A CN202010267739A CN111403152A CN 111403152 A CN111403152 A CN 111403152A CN 202010267739 A CN202010267739 A CN 202010267739A CN 111403152 A CN111403152 A CN 111403152A
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- oil
- pipe
- transformer
- radiating
- radiator
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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
- H01F27/10—Liquid cooling
- H01F27/12—Oil 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
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses a radiator for an oil-immersed transformer and the transformer, wherein the radiator for the oil-immersed transformer comprises an oil inlet pipe, an oil return pipe and a radiating pipe, the oil inlet pipe and the oil return pipe are respectively connected with the oil-immersed transformer, the oil inlet pipe and the oil return pipe are communicated through the radiating pipe, the radiating pipe is of a hollow tubular structure, and a plurality of radiating fins are arranged on the outer side of the radiating pipe. According to the radiator for the oil-immersed transformer, the radiating fins are arranged on the outer side of the tubular radiating pipe for radiating, so that the contact area between the radiator and the air is increased, the heat of transformer oil can be quickly radiated to the air through the radiating pipe, the temperature rise of the oil-immersed transformer is effectively controlled, the working performance of the oil-immersed transformer is ensured, and the service life of the oil-immersed transformer is prolonged.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a radiator for an oil-immersed transformer and the transformer.
Background
At present, an oil-immersed transformer generally adopts a radiator to reduce the temperature rise of transformer oil. When the oil-immersed transformer runs, various losses are generated by the resistor, the magnetic resistance, the iron core, the coil and the steel structural member, and the losses are dissipated to the air in a heat energy mode by means of transformer oil through the oil tank and a radiator connected with the oil tank in an air convection and self radiation mode, so that the temperature rise of the transformer oil is reduced, and the service life of the oil-immersed transformer is prolonged. The traditional oil-immersed transformer radiator has small contact area with air and poor radiating effect.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the radiator for the oil-immersed transformer, which can increase the contact area with air and has a good radiating effect.
The invention also provides a transformer with the radiator for the oil-immersed transformer.
The radiator for the oil-immersed transformer comprises an oil inlet pipe, an oil return pipe and a radiating pipe, wherein the oil inlet pipe and the oil return pipe are respectively connected with the oil-immersed transformer, the oil inlet pipe and the oil return pipe are communicated through the radiating pipe, the radiating pipe is of a hollow tubular structure, and a plurality of radiating fins are arranged on the outer side of the radiating pipe.
The radiator for the oil-immersed transformer provided by the embodiment of the invention at least has the following beneficial effects: the utility model provides a radiator for oil-immersed transformer dispels the heat through set up the fin in the pipy cooling tube outside, has increased the area of contact of radiator with the air for the heat of transformer oil can distribute to the air through the cooling tube fast, effectively controlled oil-immersed transformer's temperature rise, guaranteed oil-immersed transformer's working property, improve oil-immersed transformer's life.
According to some embodiments of the present invention, a plurality of the radiating fins are distributed along the length direction of the radiating pipe, and each radiating fin is circumferentially arranged around the radiating pipe.
According to some embodiments of the present invention, the radiating fins are spirally arranged along the length direction of the radiating pipe.
According to some embodiments of the present invention, the radiator further comprises an upper oil conduit for diversion and a lower oil conduit for confluence, the oil inlet conduit is communicated with one end of the radiator pipe through the upper oil conduit, and the other end of the radiator pipe is communicated with the oil return conduit through the lower oil conduit.
According to some embodiments of the present invention, the material of the oil inlet pipe, the oil return pipe, the heat radiating pipe, the upper oil guide pipe and the lower oil guide pipe is stainless steel.
According to some embodiments of the invention, the upper oil conduit is provided with a gas drain plug and the lower oil conduit is provided with an oil drain plug.
According to some embodiments of the invention, the upper oil guide pipe is provided with a hanger plate for hoisting, and the hanger plate is provided with a through hole.
According to some embodiments of the invention, the oil inlet pipe and the oil return pipe are provided with external coupling heads for connecting with the oil-immersed transformer.
According to some embodiments of the invention, the external coupling head is a flange.
The transformer according to the second aspect of the invention comprises an oil tank filled with transformer oil, and the radiator for the oil-immersed transformer according to the first aspect of the invention is connected outside the oil tank.
The transformer provided by the embodiment of the invention at least has the following beneficial effects: through adopting foretell a radiator for oil-immersed transformer, increased the area of contact of radiator with the air for the heat of transformer oil can distribute to the air through the cooling tube fast, effectively controlled the temperature rise of transformer, guaranteed the working property of transformer, improve the life of transformer, ensure the normal and safety of power supply and distribution system.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a heat sink for an oil-immersed transformer according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a heat sink for an oil-filled transformer according to another embodiment of the present invention;
FIG. 3 is a front view of the heat sink for an oil filled transformer of the embodiment of the present invention shown in FIG. 1;
fig. 4 is a left side view of the heat sink for an oil filled transformer of the embodiment of the invention shown in fig. 1;
FIG. 5 is a front view of the heat sink for an oil filled transformer of the embodiment of the present invention shown in FIG. 2;
fig. 6 is a left side view of the heat sink for an oil-filled transformer according to the embodiment of the invention shown in fig. 2.
Reference numerals:
the oil inlet pipe 100, the oil return pipe 200, the radiating pipe 300, the radiating fin 310, the upper oil guide pipe 400, the air bleed plug 410, the hanger plate 420, the through hole 421, the lower oil guide pipe 500, the oil bleed plug 510, the flange 600 and the outer wall 700 of the oil tank.
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 "upper", "lower", "horizontal", "top", "bottom", "inner", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying 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, should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that unless otherwise specifically limited, the terms "disposed," "mounted," "connected," "communicated," and the like are to be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention by combining the detailed contents of the technical solutions.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number.
A heat sink for an oil-filled transformer according to an embodiment of a first aspect of the present invention is described below with reference to fig. 1 to 6.
The radiator for the oil-immersed transformer according to the embodiment of the invention comprises an oil inlet pipe 100, an oil return pipe 200 and a radiating pipe 300, wherein the oil inlet pipe 100 and the oil return pipe 200 are respectively connected with the oil-immersed transformer, and the oil inlet pipe 100 and the oil return pipe 200 are communicated through the radiating pipe 300. At present, the oil-immersed transformer generally adopts a radiator to dissipate heat, after transformer oil absorbs heat generated by internal loss of the oil-immersed transformer, the transformer oil is introduced from an oil inlet pipe 100, is dissipated heat through a heat dissipation pipe 300, flows into an oil return pipe 200 after heat dissipation, and then flows back into the oil-immersed transformer through the oil return pipe 200, so that the temperature rise of the oil-immersed transformer is controlled through the process, and the service life of the oil-immersed transformer is prolonged. This part belongs to the prior art, and is not described in detail herein.
In the embodiment of the present invention, the radiating pipe 300 is a hollow tubular structure, and a plurality of radiating fins 310 are disposed on the outer side of the radiating pipe 300.
The conventional oil-immersed transformer radiator is usually a sheet radiator, the sheet radiating fins are longitudinally distributed, the contact area with air is small, and the heat of transformer oil cannot be quickly transferred to the air due to narrow channels in the sheet radiating fins and slow flow rate of the transformer oil, so that the radiating effect is poor. The radiator for the oil-immersed transformer in the embodiment of the invention adopts the radiating pipe 300 with the tubular structure, the flow speed of the transformer oil in the radiating pipe 300 is high, the heat of the transformer oil can be quickly transferred to the peripheral air, and the plurality of radiating fins 310 are arranged on the outer side of the radiating pipe 300, so that the contact area between the radiating pipe 300 and the air is increased, the radiating performance of the radiating pipe 300 is further improved, the temperature rise of the oil-immersed transformer is effectively controlled, the working performance of the oil-immersed transformer is ensured, and the service life of the oil-immersed transformer is prolonged.
It should be understood that, referring to fig. 4 and fig. 6, the radiator for an oil-filled transformer according to an embodiment of the present invention is external, the oil-filled transformer includes an oil tank filled with transformer oil, and the radiator for an oil-filled transformer according to an embodiment of the present invention is connected to an outer wall 700 of the oil tank of the oil-filled transformer through external connectors on the oil inlet pipe 100 and the oil return pipe 200.
In the embodiment of the present invention, a plurality of radiating fins 310 are distributed along the length direction of the radiating pipe 300, and the respective radiating fins 310 are circumferentially arranged around the radiating pipe 300. By means of the structure, the heat dissipation area of the heat dissipation fins 310 can be increased, heat of transformer oil can be rapidly transferred to peripheral air, the temperature rise of the oil-immersed transformer is effectively controlled, the working performance of the oil-immersed transformer is guaranteed, and the service life of the oil-immersed transformer is prolonged. Specifically, the included angle between the heat dissipation fins 310 and the heat dissipation tube 300 may be a right angle or an acute angle, and the heat dissipation fins 310 may be disposed in parallel or not in parallel.
In some embodiments of the present invention, the plurality of radiating fins 310 are distributed along the length direction of the radiating pipe 300, the radiating fins 310 are arranged around the circumference of the radiating pipe 300, the included angle between the radiating fins 310 and the radiating pipe 300 is a right angle, and the radiating fins 310 are arranged in parallel, which is advantageous for the radiating fins 310 to radiate the heat of the transformer oil to the air.
In the embodiment of the present invention, the heat dissipating fins 310 are spirally disposed along the length direction of the heat dissipating tube 300. Specifically, the spiral cooling fins 310 not only increase the heat dissipation area, but also the spiral air channels are more favorable for convection, so that heat can be transferred to the peripheral air more quickly.
In the embodiment of the present invention, an upper oil guiding pipe 400 for diverging flow and a lower oil guiding pipe 500 for converging flow are further included, the oil inlet pipe 100 communicates with one end of the heat radiating pipe 300 through the upper oil guiding pipe 400, and the other end of the heat radiating pipe 300 communicates with the oil return pipe 200 through the lower oil guiding pipe 500. In practical applications, in order to improve the heat dissipation efficiency, the number of the heat dissipation pipes 300 is usually more than one, the transformer oil flows into the upper oil guiding pipe 400 from the oil inlet pipe 100, the upper oil guiding pipe 400 divides the transformer oil into the heat dissipation pipes 300 for heat dissipation, the transformer oil flows into the lower oil guiding pipe 500 after heat dissipation, and then flows back into the oil-immersed transformer through the oil return pipe 200.
In the embodiment of the present invention, the materials of the oil inlet pipe 100, the oil return pipe 200, the heat radiating pipe 300, the upper oil guide pipe 400 and the lower oil guide pipe 500 are all stainless steel. The stainless steel has the advantages of oxidation resistance and corrosion resistance, and the oil inlet pipe 100, the oil return pipe 200, the radiating pipe 300, the upper oil guide pipe 400 and the lower oil guide pipe 500 are all made of stainless steel materials, so that the purposes of oxidation resistance and corrosion resistance are achieved without additionally performing complicated and severe surface treatment procedures, the production and manufacturing links of the radiator for the oil-immersed transformer in the embodiment of the invention are reduced, the production and manufacturing efficiency is improved, the radiator is more environment-friendly, and the service life of the radiator for the oil-immersed transformer in the embodiment of the invention can be prolonged.
In the embodiment of the present invention, the upper oil guide pipe 400 is provided with the gas release plug 410, and the lower oil guide pipe 500 is provided with the oil release plug 510. The air bleed 410 is used for discharging air in the radiator for the oil-immersed transformer in the embodiment of the present invention, so as to ensure uniformity of the heat conducting medium, so that the heat radiation performance of the radiator for the oil-immersed transformer in the embodiment of the present invention is kept good. The oil drain plug 510 is used for draining oil in the radiator of the oil-filled transformer according to the embodiment of the invention, for example, when equipment is overhauled, the oil drain plug 510 needs to be opened to drain the oil.
In the embodiment of the invention, the upper oil guide pipe 400 is provided with the hanging plate 420 for hoisting, the hanging plate 420 is provided with the through hole 421, and the arrangement of the hanging plate 420 facilitates the handling of the radiator for the oil-immersed transformer in the embodiment of the invention. It should be understood that hoisting refers to the general term of installation and positioning of equipment by a crane or a hoisting mechanism, and various hoisting tools are used for hoisting equipment, workpieces, appliances, materials and the like to change positions during the process of maintenance or repair.
In the embodiment of the present invention, the oil inlet pipe 100 and the oil return pipe 200 are both provided with an external coupling for connecting with an oil-immersed transformer, and here, a specific connection manner between the external coupling and the oil-immersed transformer is not limited, and a welding manner may be adopted, or other connection manners may also be adopted.
In the embodiment of the present invention, the external coupling head is a flange 600, and it should be understood that the flange 600 is used in pair with an oil-immersed transformer, so that the oil inlet pipe 100 and the oil return pipe 200 are respectively and hermetically connected with the oil-immersed transformer. Specifically, the flange 600 may be provided with a butterfly valve, and when the butterfly valve is closed, oil circulation between the inside of the oil-immersed transformer and the radiator for the oil-immersed transformer according to the embodiment of the present invention may be blocked, so that when the butterfly valve is closed, the radiator for the oil-immersed transformer according to the embodiment of the present invention may be detached, thereby reducing the volume and facilitating transportation.
The following describes a heat sink for an oil-filled transformer according to an embodiment of the present invention with a specific example.
Example 1
Referring to fig. 1, 3 and 4, the radiator for the oil-immersed transformer includes an oil inlet pipe 100, an oil return pipe 200, a heat dissipation pipe 300, an upper oil guide pipe 400 for shunting and a lower oil guide pipe 500 for converging, the oil inlet pipe 100 and the oil return pipe 200 are respectively connected to the oil-immersed transformer through flanges 600, the oil inlet pipe 100 is communicated with one end of the heat dissipation pipe 300 through the upper oil guide pipe 400, the other end of the heat dissipation pipe 300 is communicated with the oil return pipe 200 through the lower oil guide pipe 500, the number of the heat dissipation pipes 300 is seven, the heat dissipation pipe 300 is arranged in a single row, the heat dissipation pipe 300 is a hollow tubular structure, a plurality of heat dissipation fins 310 are disposed at the outer side of the heat dissipation pipe 300, the heat dissipation fins 310 are distributed along the length direction of the heat dissipation pipe 300, the heat dissipation fins 310 are circumferentially disposed around the heat dissipation pipe. Wherein, the materials of the oil inlet pipe 100, the oil return pipe 200, the heat radiation pipe 300, the upper oil guide pipe 400 and the lower oil guide pipe 500 are all stainless steel. The upper oil guide pipe 400 is provided with a gas release plug 410 and a hanger plate 420 for hanging, the hanger plate 420 is provided with a through hole 421, and the lower oil guide pipe 500 is provided with an oil release plug 510.
According to the radiator for the oil-immersed transformer provided by the embodiment of the invention, at least the following effects can be achieved through the arrangement, the radiator for the oil-immersed transformer is provided, the radiating fins 310 are arranged on the outer side of the tubular radiating pipe 300 to radiate heat, the contact area between the radiator and the air is increased, the heat of transformer oil can be quickly radiated to the air through the radiating pipe 300, the temperature rise of the oil-immersed transformer is effectively controlled, the working performance of the oil-immersed transformer is ensured, and the service life of the oil-immersed transformer is prolonged.
Example 2
Referring to fig. 2, 5 and 6, the radiator for an oil-filled transformer includes an oil inlet pipe 100 and an oil return pipe 200, the cooling tube 300, be used for the upper oil pipe 400 of reposition of redundant personnel and be used for the lower oil pipe 500 of converging, advance oil pipe 100 and return oil pipe 200 and be connected with oil-immersed transformer through flange 600 respectively, advance oil pipe 100 and lead oil pipe 400 and the one end intercommunication of cooling tube 300 through last, the other end of cooling tube 300 leads oil pipe 500 and returns oil pipe 200 intercommunication through down, the quantity of cooling tube 300 is fourteen, cooling tube 300 is double-row arrangement, seven every row, cooling tube 300 is hollow tubular structure, the outside of cooling tube 300 is provided with a plurality of fin 310, fin 310 distributes along the length direction of cooling tube 300, each fin 310 sets up around cooling tube 300 circumference, the contained angle between fin 310 and cooling tube 300 is the right angle, and be parallel arrangement between each fin 310. Wherein, the materials of the oil inlet pipe 100, the oil return pipe 200, the heat radiation pipe 300, the upper oil guide pipe 400 and the lower oil guide pipe 500 are all stainless steel. The upper oil guide pipe 400 is provided with a gas release plug 410 and a hanger plate 420 for hanging, the hanger plate 420 is provided with a through hole 421, and the lower oil guide pipe 500 is provided with an oil release plug 510.
According to the radiator for the oil-immersed transformer provided by the embodiment of the invention, at least the following effects can be achieved through the arrangement, the radiator for the oil-immersed transformer is provided, the radiating fins 310 are arranged on the outer side of the tubular radiating pipe 300 to radiate heat, the contact area between the radiator and the air is increased, the heat of transformer oil can be quickly radiated to the air through the radiating pipe 300, the temperature rise of the oil-immersed transformer is effectively controlled, the working performance of the oil-immersed transformer is ensured, and the service life of the oil-immersed transformer is prolonged.
According to the second aspect of the invention, the transformer comprises an oil tank filled with transformer oil, and the radiator for the oil-immersed transformer according to the first aspect of the invention is connected outside the oil tank.
According to the transformer provided by the embodiment of the invention, by adopting the radiator for the oil-immersed transformer, the contact area between the radiator and the air is increased, so that the heat of transformer oil can be quickly dissipated into the air through the radiating pipe 300, the temperature rise of the transformer is effectively controlled, the working performance of the transformer is ensured, the service life of the transformer is prolonged, and the normal and safe operation of a power supply and distribution system is ensured.
Other constructions and operations of transformers according to embodiments of the invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of "one embodiment," "some embodiments," or "specific" or the like are intended to mean 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, the schematic representations of the terms used above do 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.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. The utility model provides a radiator for oil-immersed transformer, is including advancing oil pipe, returning oil pipe and cooling tube, advance oil pipe with it is connected with oil-immersed transformer respectively to return oil pipe, advance oil pipe with return oil and pass through between the oil pipe cooling tube intercommunication, its characterized in that:
the radiating pipe is of a hollow tubular structure, and a plurality of radiating fins are arranged on the outer side of the radiating pipe.
2. The heat sink for oil-filled transformers according to claim 1, characterized in that: a plurality of the radiating fins are distributed along the length direction of the radiating pipe, and each radiating fin is arranged around the circumference of the radiating pipe.
3. The heat sink for oil-filled transformers according to claim 1, characterized in that: the radiating fins are spirally arranged along the length direction of the radiating pipe.
4. The heat sink for oil-filled transformers according to claim 1, characterized in that: still including being used for shunting lead oil pipe on with be used for the lower oil pipe that leads of confluence, advance oil pipe and pass through go up oil pipe with the one end intercommunication of cooling tube, the other end of cooling tube passes through lead oil pipe down with return oil pipe intercommunication.
5. The heat sink for oil filled transformer according to claim 4, characterized in that: the oil inlet pipe, the oil return pipe, the radiating pipe, the upper oil guide pipe and the lower oil guide pipe are made of stainless steel.
6. The heat sink for oil filled transformer according to claim 4, characterized in that: the upper oil guide pipe is provided with an air relief plug, and the lower oil guide pipe is provided with an oil relief plug.
7. The heat sink for oil filled transformer according to claim 4, characterized in that: the upper oil guide pipe is provided with a hanging plate for hoisting, and the hanging plate is provided with a through hole.
8. The heat sink for oil-filled transformers according to claim 1, characterized in that: the oil inlet pipe and the oil return pipe are provided with outer connecting joints used for being connected with the oil-immersed transformer.
9. The heat sink for an oil filled transformer according to claim 8, characterized in that: the external coupling head is a flange.
10. A transformer, characterized by: comprising a tank filled with transformer oil, externally connected to a radiator for an oil-filled transformer according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010267739.4A CN111403152A (en) | 2020-04-08 | 2020-04-08 | Radiator for oil-immersed transformer and transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010267739.4A CN111403152A (en) | 2020-04-08 | 2020-04-08 | Radiator for oil-immersed transformer and transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111403152A true CN111403152A (en) | 2020-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010267739.4A Pending CN111403152A (en) | 2020-04-08 | 2020-04-08 | Radiator for oil-immersed transformer and transformer |
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| Country | Link |
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| CN (1) | CN111403152A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116230361A (en) * | 2023-03-07 | 2023-06-06 | 江苏腾奇电力科技股份有限公司 | Copper-aluminum alloy radiator for transformer and application method thereof |
| CN116487149A (en) * | 2023-05-24 | 2023-07-25 | 山东迪米特电气有限公司 | Oil immersed transformer |
-
2020
- 2020-04-08 CN CN202010267739.4A patent/CN111403152A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116230361A (en) * | 2023-03-07 | 2023-06-06 | 江苏腾奇电力科技股份有限公司 | Copper-aluminum alloy radiator for transformer and application method thereof |
| CN116230361B (en) * | 2023-03-07 | 2023-11-21 | 江苏腾奇电力科技股份有限公司 | Copper-aluminum alloy radiator for transformer and application method thereof |
| CN116487149A (en) * | 2023-05-24 | 2023-07-25 | 山东迪米特电气有限公司 | Oil immersed transformer |
| CN116487149B (en) * | 2023-05-24 | 2024-04-23 | 山东迪米特电气有限公司 | Oil immersed transformer |
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