CN216161567U - Oil-immersed transformer - Google Patents
Oil-immersed transformer Download PDFInfo
- Publication number
- CN216161567U CN216161567U CN202122142784.XU CN202122142784U CN216161567U CN 216161567 U CN216161567 U CN 216161567U CN 202122142784 U CN202122142784 U CN 202122142784U CN 216161567 U CN216161567 U CN 216161567U
- Authority
- CN
- China
- Prior art keywords
- oil
- oil tank
- coil
- radiator
- tank
- 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.)
- Active
Links
Images
Landscapes
- Transformer Cooling (AREA)
Abstract
An oil-immersed transformer comprises a transformer body provided with a coil assembly, wherein the transformer body is arranged in an oil tank, the oil tank is provided with a radiator, an oil inlet pipeline and an oil return pipeline are arranged among the coil assembly, the oil tank and the radiator, low-temperature oil in the oil tank flows to the coil assembly and the radiator through the oil inlet pipeline under the action of thermosiphon, the low-temperature oil in the oil tank returns to the oil tank through the oil return pipeline after being subjected to heat exchange through the coil assembly and the radiator, a sealing structure is arranged between the transformer body positioned in the oil tank and the wall surface of the oil tank, and the coil assembly comprises a plurality of coils and wire cakes; and a first guide oil structure is arranged on the periphery of each coil, a second guide oil structure is arranged between every two wire cakes, and low-temperature oil in an oil tank enters the coil assembly along the guide oil structures and flows to the radiator. The utility model improves the heat dissipation effect of the transformer through the structure, and greatly reduces the design cost and the size of the transformer when designing a large-capacity transformer.
Description
Technical Field
The utility model relates to a transformer, in particular to an oil-immersed transformer.
Background
Conventional oil-immersed transformer designs certain quantity of oil ducts between some cakes of coil, interlamination according to the demand, and under the principle effect of thermosiphon, colder oil (oil with lower temperature) can get into and pass through the coil through the oil duct from the oil tank bottom, and colder oil takes away the coil heat on one side and becomes hotter oil, moves up on the other side, then becomes colder oil again through the heat dissipation of radiator and gets back to the oil tank bottom to this circulation above-mentioned process dispels the heat to the transformer coil. However, the general oil passage is not designed to be particularly large, and is sago larger than the space between the transformer body and the oil tank wall in the oil tank, which is sago smaller than the space between the transformer body and the oil tank wall, so that the resistance to the movement of oil in the space between the oil tank wall and the transformer body is smaller than the resistance to the movement of the oil passage on the transformer coil, and it is conceivable that the movement of oil in the transformer coil may not be sufficient. In addition, the general coil oil passage has only single directivity, so that the oil of the transformer cannot completely move in the coil at the position as much as possible. In summary, the heat dissipation effect of the transformer is reduced, and the design cost and size of the transformer are not greatly affected in the case of a transformer with a small capacity, but the larger the capacity of the transformer is, the more the current tidal current is, the important factor for designing the transformer is.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an oil-immersed transformer, which enables oil to flow fully in a coil and limits the flow direction of the oil so as to overcome the defects in the prior art.
The oil-immersed transformer comprises a transformer body provided with a coil assembly, the transformer body is arranged in an oil tank, the oil tank is provided with a radiator, an oil inlet pipeline and an oil return pipeline are arranged between the coil assembly, the oil tank and the radiator, low-temperature oil in the oil tank flows to the coil assembly and the radiator through the oil inlet pipeline under the action of thermosiphon, the low-temperature oil in the oil tank returns to the oil tank through the oil return pipeline after being subjected to heat exchange through the coil assembly and the radiator, a sealing structure is arranged between the transformer body in the oil tank and the wall surface of the oil tank, and the coil assembly comprises a plurality of coils and wire cakes; the periphery of each coil is provided with a first guide oil structure, a second guide oil structure is arranged between every two wire cakes which are separated from each other, and low-temperature oil of the oil tank enters the coil assembly along the guide oil structures and flows to the radiator, so that the heat dissipation efficiency of the coil assembly is improved.
And a fastening structure for compressing and fixing the sealing structure is arranged between the oil tank and the transformer body.
The sealing structure is a hard paperboard, and the space between the transformer body and the oil tank wall in the oil tank is sealed by the hard paperboard.
The fastening structure comprises a nylon bolt for compressing and fixing the sealing structure.
And a hard paperboard forming a first oil guiding structure is arranged at the periphery of each coil.
Oil passages forming oil inlet pipelines are arranged among certain cakes and among certain layers of the coil; and oil retaining paper rings forming a second oil guiding structure are arranged among every two line cakes.
The coil comprises a high-voltage coil and a low-voltage coil.
The radiator is fixed on the oil tank through a bracket and a fastener.
The radiator is provided with a pump body for pumping liquid, and the pump body is communicated with an oil inlet pipeline through a pipeline.
The radiator is provided with a radiating channel.
The utility model has the following beneficial effects:
by sealing the transformer body in the tank as far as possible from the tank wall with a rigid cardboard sheet, the oil at the bottom of the tank can only enter from the lower part of the coil assembly and flow upwards. Meanwhile, each coil is surrounded by a hard paperboard, and oil blocking paper rings are arranged among a plurality of (2-4) wire cakes on the high-voltage coil with a cake-shaped structure to enhance the directivity of oil flow, so that transformer oil flows along a designed route after entering from the lower part of the coil, and the oil moves upwards under the condition that the oil passes through each cake wire in the high-voltage coil. This makes the radiating effect improve, can great reduction design cost when designing large capacity transformer to and transformer size.
Drawings
Fig. 1 is a schematic diagram of a partial cross-sectional structure of an oil-immersed transformer according to the present invention.
FIG. 2 is a schematic view of a heat sink according to the present invention.
Detailed Description
The utility model is further described with reference to the following figures and examples.
Referring to fig. 1 and 2, an oil-immersed transformer comprises a transformer body 1 provided with a coil assembly 2, the transformer body 1 is arranged in an oil tank 3, the oil tank 3 is provided with a radiator 6, an oil inlet pipeline and an oil return pipeline are arranged among the coil assembly 2, the oil tank 3 and the radiator 6, low-temperature oil in the oil tank 3 flows to the coil assembly 2 and the radiator 6 through the oil inlet pipeline under the action of thermosiphon, the low-temperature oil in the oil tank 3 returns to the oil tank 3 through the oil return pipeline after heat exchange is carried out on the low-temperature oil by the coil assembly 2 and the radiator 6, a sealing structure 4 is arranged between the transformer body 1 in the oil tank 3 and the wall surface of the oil tank 3, and the coil assembly 2 comprises a plurality of coils and wire cakes; the periphery of each coil is provided with a first guide oil structure, a second guide oil structure 5 is arranged between every two wire cakes, and low-temperature oil in the oil tank 3 enters the coil assembly 2 along the guide oil structures and flows to the radiator 6.
Under the action of the principle of thermosiphon, oil with lower temperature in the oil tank 3 can enter from the bottom of the oil tank 3 through an oil duct and pass through the coil assembly 2, and the cold oil takes away the heat of the coil assembly 2 to become hotter oil while moving upwards, then dissipates the heat through the radiator 6 and becomes the cold oil again, and then returns to the bottom of the oil tank 3.
And a fastening structure for compressing and fixing the sealing structure 4 is arranged between the oil tank 3 and the transformer body 1.
The sealing structure 4 is a hard paperboard, and the space between the transformer body 1 and the wall of the oil tank in the oil tank 3 is sealed by the hard paperboard; by sealing the transformer body 1 in the oil tank 3 from the tank wall as much as possible with a hard cardboard sheet, oil at the bottom of the oil tank 3 can only enter from the lower part of the coil assembly 2 and flow upward.
The fastening structure includes a nylon bolt that press-fixes the seal structure 4.
And a hard paperboard forming a first oil guiding structure is arranged at the periphery of each coil.
Oil passages forming oil inlet pipelines are arranged among certain cakes and among certain layers of the coil; and oil retaining paper rings forming a second oil guiding structure 5 are arranged among every two line cakes.
The coil comprises a high-voltage coil and a low-voltage coil.
Each coil is surrounded by a hard paperboard, and oil retaining paper rings are arranged between every two (2-4) wire cakes on the high-voltage coil with a cake-shaped structure so as to enhance the directivity of oil flow, so that transformer oil flows along a designed route after entering from the lower part of the coil, and the oil moves upwards in the high-voltage coil under the condition of passing through each cake wire, thereby effectively improving the heat dissipation efficiency and enabling the oil to flow fully in the coil.
The radiator 6 is fixed on the oil tank 3 through a bracket and a fastener. The radiator 6 is hung on the outer wall of the oil tank 3 through a bracket and a fastener.
The radiator 6 is provided with a pump body 7 for pumping liquid, and the pump body 7 is communicated with an oil inlet pipeline through a pipeline. The pump body 7 pumps the low-temperature oil in the oil tank 3 to the oil inlet pipeline, and the low-temperature oil is changed into hot oil through the coil assembly 2 and then returns to the oil tank 3 through the radiator 6 and the oil return pipeline.
The radiator 6 is provided with a radiating channel.
The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the utility model are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, and the utility model is intended to be protected by the following claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides an oil-immersed transformer, including transformer ware body (1) that is equipped with coil pack (2), transformer ware body (1) sets up in oil tank (3), be equipped with radiator (6) on oil tank (3), coil pack (2), oil tank (3), be equipped with between radiator (6) into oil pipe and return oil pipe way, the low temperature oil of oil tank (3) is through advancing oil pipe way flow direction coil pack (2) under thermosiphon effect, radiator (6), the low temperature oil of oil tank (3) is through coil pack (2), radiator (6) carry out the heat exchange after return oil pipe way and return into oil tank (3), its characterized in that: a sealing structure (4) is arranged between the transformer body (1) in the oil tank (3) and the wall surface of the oil tank (3), and the coil assembly (2) comprises a plurality of coils and wire cakes; and a first guide oil structure is arranged on the periphery of each coil, a second guide oil structure (5) is arranged between every two wire cakes, and low-temperature oil in the oil tank (3) enters the coil assembly (2) along the guide oil structures and flows to the radiator (6).
2. Oil filled transformer according to claim 1, characterized in that: a fastening structure for compressing and fixing the sealing structure (4) is arranged between the oil tank (3) and the transformer body (1).
3. Oil filled transformer according to claim 2, characterized in that: the sealing structure (4) is made of hard paper boards, and the space between the transformer body (1) and the wall of the oil tank in the oil tank (3) is sealed through the hard paper boards.
4. Oil filled transformer according to claim 3, characterized in that: the fastening structure comprises a nylon bolt for compressing and fixing the sealing structure (4).
5. Oil filled transformer according to claim 1, characterized in that: and a hard paperboard forming a first oil guiding structure is arranged at the periphery of each coil.
6. Oil filled transformer according to claim 1, characterized in that: oil passages forming oil inlet pipelines are arranged among certain cakes and among certain layers of the coil; and oil retaining paper rings forming a second oil guiding structure (5) are arranged among every two line cakes.
7. Oil filled transformer according to claim 1, characterized in that: the coil comprises a high-voltage coil and a low-voltage coil.
8. Oil filled transformer according to claim 1, characterized in that: the radiator (6) is fixed on the oil tank (3) through a bracket and a fastener.
9. Oil filled transformer according to claim 8, characterized in that: the radiator (6) is provided with a pump body (7) for pumping liquid, and the pump body (7) is communicated with an oil inlet pipeline through a pipeline.
10. Oil filled transformer according to claim 9, characterized in that: the radiator (6) is provided with a radiating channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122142784.XU CN216161567U (en) | 2021-09-06 | 2021-09-06 | Oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122142784.XU CN216161567U (en) | 2021-09-06 | 2021-09-06 | Oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216161567U true CN216161567U (en) | 2022-04-01 |
Family
ID=80842897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122142784.XU Active CN216161567U (en) | 2021-09-06 | 2021-09-06 | Oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216161567U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116469647A (en) * | 2023-05-16 | 2023-07-21 | 冀昌电气集团有限公司 | Transformer with good heat dissipation performance |
-
2021
- 2021-09-06 CN CN202122142784.XU patent/CN216161567U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116469647A (en) * | 2023-05-16 | 2023-07-21 | 冀昌电气集团有限公司 | Transformer with good heat dissipation performance |
| CN116469647B (en) * | 2023-05-16 | 2023-09-22 | 冀昌电气集团有限公司 | Transformer with good heat dissipation performance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101325118B (en) | Dry-type transformer with vapour-liquid two phase heat-radiation loop | |
| CN111707010B (en) | Design method of solar system temperature equalizing pipe | |
| CN216161567U (en) | Oil-immersed transformer | |
| CN201259816Y (en) | Dry transformer having gas-liquid dual phase heat radiation loop | |
| CN103851039A (en) | Hydraulic oil-water cooler | |
| CN202582237U (en) | Plate-shell type condenser | |
| CN102278906B (en) | Heat exchanger and flat pipe thereof | |
| CN201748713U (en) | High-efficiency compact heat exchanger | |
| CN205487648U (en) | Heat dissipation cooling device of transformer | |
| CN204806939U (en) | Capillary formula oil cooler that gathers | |
| CN212300019U (en) | Tube-fin composite radiator | |
| CN209103914U (en) | A kind of netted gilled radiator | |
| CN209692453U (en) | A kind of structure that linear motor is quickly cooled down | |
| CN208607992U (en) | A kind of high heat-flux mobile transformer radiating module and radiating module group | |
| CN208027864U (en) | A kind of transformer automatic heat radiator | |
| CN203130236U (en) | Combined radiator for engine | |
| CN203489748U (en) | Drier heat exchanger | |
| CN208078829U (en) | A kind of motor housing of the air cooling of motor | |
| CN206401136U (en) | The transformer oil storage of oriented heat dissipating | |
| CN220208709U (en) | Oil immersed transformer | |
| CN207382110U (en) | A kind of New energy automobile motor cooling device | |
| CN105066449A (en) | Coil pipe water tank device in heat pump | |
| CN101234364A (en) | Circulating oil-cooling type electric-magnetic iron remover | |
| CN206321115U (en) | A kind of water-stop structure of heat exchanger | |
| CN205784016U (en) | A kind of pipe-coil type evaporator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |