CN112863820A - Oil-immersed transformer - Google Patents

Oil-immersed transformer Download PDF

Info

Publication number
CN112863820A
CN112863820A CN202110045265.3A CN202110045265A CN112863820A CN 112863820 A CN112863820 A CN 112863820A CN 202110045265 A CN202110045265 A CN 202110045265A CN 112863820 A CN112863820 A CN 112863820A
Authority
CN
China
Prior art keywords
oil tank
heat dissipation
oil
heat
voltage coil
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
Application number
CN202110045265.3A
Other languages
Chinese (zh)
Inventor
马文华
贺万鹏
刘建勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Yonggu Power Technology Co ltd
Zhaoqing Zhaoyang Hv Switchgear Factory Co ltd
Zhuhai Secopower Special Type Transformer Co ltd
Original Assignee
Guangdong Yonggu Power Technology Co ltd
Zhaoqing Zhaoyang Hv Switchgear Factory Co ltd
Zhuhai Secopower Special Type Transformer Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangdong Yonggu Power Technology Co ltd, Zhaoqing Zhaoyang Hv Switchgear Factory Co ltd, Zhuhai Secopower Special Type Transformer Co ltd filed Critical Guangdong Yonggu Power Technology Co ltd
Priority to CN202110045265.3A priority Critical patent/CN112863820A/en
Publication of CN112863820A publication Critical patent/CN112863820A/en
Pending legal-status Critical Current

Links

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
    • H01F27/12—Oil cooling
    • H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
    • 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
    • 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
    • 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
    • H01F27/22—Cooling by heat conduction through solid or powdered fillings
    • 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
    • H01F27/24—Magnetic cores
    • H01F27/25—Magnetic cores made from strips or ribbons
    • 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
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together
    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/303—Clamping coils, windings or parts thereof together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformer Cooling (AREA)

Abstract

The invention provides an oil-immersed transformer, which comprises an oil tank body, a transformer body and a heat dissipation device, wherein the oil tank body is made of an aluminum alloy material and comprises an oil tank cover plate, an oil tank shell wall, an oil tank bottom plate and two oil tank fixing seats; the invention also adopts a plane coil iron core structure, has low no-load loss and no-load current and compact and reasonable structure, and improves the operation reliability of the product.

Description

Oil-immersed transformer
Technical Field
The invention belongs to the technical field of power transformers, and particularly relates to an oil-immersed transformer.
Background
At present, the oil tank of the common oil immersed transformer adopts steel as the manufacturing material, for example, the steel is used as the frame, the thick steel plate is used as the tank wall, and the thin steel plate is used for manufacturing the corrugated sheet or the finned radiator, and most of the oil tank is in a rectangular structure. The oil tank made of the material and in the shape has poor heat dissipation capability, and the steel plate can conduct magnetism, so that additional loss such as eddy current loss of the transformer can be increased, the conditions such as temperature rise and load loss of the transformer are worsened, and the oil tank has the defects of large volume and heavy weight; and its iron core adopts lamination formula structure more, uses the iron core of this structure to do single-phase oil-immersed transformer of small capacity, and is great to the technology loss of iron core, in addition the reason of iron core angle bar, so the iron core is with more material, and body weight is heavier, causes the total weight and the volume of this type of oil-immersed transformer also can be great, increases the material cost of transformer, and is unfavorable for the installation transportation, and receives the poor influence of steel heat conduction ability, and the radiating effect of transformer is not good, and the running state is unreliable.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an oil-immersed transformer, which solves the problems of large volume, heavy weight, poor heat dissipation capacity, severe temperature rise loss condition, inconvenience in installation and transportation and unreliable operation state of the transformer in the prior art.
In order to achieve the purpose, the invention provides an oil-immersed transformer, which comprises an oil tank body, a transformer body and a heat dissipation device, wherein the oil tank body is provided with a first oil inlet and a second oil inlet;
the oil tank body is made of an aluminum alloy material and comprises an oil tank cover plate, an oil tank shell wall, an oil tank bottom plate and two oil tank fixing seats, wherein the upper end and the lower end of the oil tank shell wall are open, the oil tank bottom plate is fixed on the lower edge of the oil tank shell wall, the appearance of the oil tank bottom plate is matched with the lower end opening of the oil tank shell wall, the oil tank fixing seats are fixed on the lower portion of the oil tank bottom plate, the oil tank cover plate is fixed on the upper edge of the oil tank shell wall, the appearance of the oil tank cover plate is matched with the upper end opening of the oil tank shell wall, and a;
the transformer body is arranged in a space enclosed by the oil tank body and comprises a plane wound iron core, a high-voltage coil, a low-voltage coil, an upper clamping piece and a lower clamping piece, the low-voltage coil is sleeved outside the plane wound iron core, the high-voltage coil is sleeved outside the low-voltage coil, the upper clamping piece is arranged at the upper ends of the high-voltage coil and the low-voltage coil, the lower clamping piece is arranged at the lower ends of the high-voltage coil and the low-voltage coil, the upper clamping piece and the lower clamping piece are fixedly connected through a connecting rod, the upper clamping piece and the lower clamping piece clamp the high-voltage coil and the low-voltage coil from the upper side and the lower side respectively, and the upper clamping piece;
the heat dissipation device is fixed on the outer wall of the oil tank shell.
Further, the aluminum alloy material is a nano aluminum alloy composite material, the nano aluminum alloy composite material comprises nano aluminum alloy and carbon nano particles, and the carbon nano particles are directionally arranged in parallel to the surface of the nano aluminum alloy composite material.
Further, the cross section of the oil tank shell wall is oval.
Further, the planar wound core is formed by continuously winding silicon steel sheets with different widths.
Further, the planar wound core comprises an amorphous alloy core and a coating layer, the coating layer is arranged on the outer surface of the amorphous alloy core, the shape of the coating layer is matched with the shape of the amorphous alloy core, a magnetic conduction colloid layer is further arranged between the coating layer and the amorphous alloy core, and the magnetic conduction colloid layer is filled between the coating layer and the amorphous alloy core.
Furthermore, the heat dissipation device comprises two groups of heat dissipation fins, each heat dissipation fin comprises a heat dissipation bottom plate and a plurality of heat dissipation fins, the heat dissipation fins are fixed on one side of the heat dissipation bottom plate side by side, the other side of the heat dissipation bottom plate is fixed on the vertical side face of the wall of the oil tank shell, and the two groups of heat dissipation fins are arranged oppositely.
Furthermore, the heat dissipation device further comprises a plurality of phase-change heat pipe radiators, each phase-change heat pipe radiator comprises a hot end and a cold end, the cold end of each phase-change heat pipe radiator is connected to the heat dissipation fins, the hot end of each phase-change heat pipe radiator is connected with a heat dissipation block, and the heat dissipation block is provided with corrugated toothed heat dissipation fins.
Furthermore, a heat dissipation fan is correspondingly arranged on the heat dissipation block.
Furthermore, the heat dissipation device further comprises a plurality of semiconductor heat exchange units, each semiconductor heat exchange unit comprises a hot end and a cold end, the cold ends of the semiconductor heat exchange units are connected to the heat dissipation fins, the hot ends of the semiconductor heat exchange units are connected with a heat dissipation block, and the heat dissipation block is provided with corrugated toothed heat dissipation fins.
Further, the planar wound core is a single-phase three-limb core or a three-phase three-limb core.
The invention has the beneficial effects that:
1. the invention provides an oil-immersed transformer, wherein an oil tank body is made of an aluminum alloy material, an upper clamping piece and a lower clamping piece are also made of an aluminum alloy material, and the aluminum alloy material is a nano aluminum alloy composite material and has the advantages of small density, light weight, strong heat dissipation capability, non-magnetic conductivity and high mechanical strength, so that the transformer is small in size, light in weight, good in heat dissipation effect and stable in running state;
2. the invention provides an oil-immersed transformer, which adopts a plane wound core structure, wherein a coating layer covers the outer surface of an amorphous alloy core, and a magnetic conductive colloid layer is filled in a gap between the coating layer and the amorphous alloy core, so that the pollution of the amorphous alloy core to transformer oil caused by chips generated by damage in the operation process can be avoided, the subsequent maintenance is facilitated, and the operation reliability is improved;
3. the invention provides an oil-immersed transformer, wherein a heat dissipation device comprises two groups of heat dissipation fins and a phase-change heat pipe radiator or a semiconductor heat exchange unit, wherein the heat dissipation fins are tightly attached to the side surface of the wall of an oil tank to conduct out the heat of transformer oil in the oil tank, the heat dissipation capacity of the phase-change heat pipe radiator or the semiconductor heat exchange unit is utilized, the cold end is connected with the heat dissipation fins on the heat dissipation fins, the hot end is connected with a heat dissipation block, and the heat dissipation is enhanced through forced convection heat exchange, so that the heat conduction of the heat dissipation fins is faster, and.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
Fig. 1 is a schematic diagram of an overall structure of an oil-immersed transformer provided by the invention.
Fig. 2 is a schematic diagram of an internal structure of an oil-immersed transformer provided by the invention.
Fig. 3 is a schematic cross-sectional view of a planar wound core in an oil-immersed transformer according to the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example 1:
referring to fig. 1 to 2, the present embodiment provides an oil-immersed transformer, which is suitable for a single-phase distribution transformer, and includes an oil tank, a transformer body, and a heat dissipation device;
the oil tank body is made of aluminum alloy, including the fuel tank cover plate 11, the shell wall 12 of the fuel tank, fuel tank bottom plate 13 and two fuel tank fixing bases 14, the upper and lower both ends of shell wall 12 of the fuel tank are open, the fuel tank bottom plate 13 is fixed to the lower edge of the shell wall 12 of the fuel tank, the appearance of the fuel tank bottom plate 13 matches with lower end opening of the shell wall 12 of the fuel tank, the fuel tank fixing base 14 is fixed to the inferior part of the fuel tank bottom plate 13, the fuel tank cover plate 11 is fixed to the upper edge of the shell wall 12 of the fuel tank with the bolt, the appearance of the fuel tank cover plate 11 matches with upper end opening of the shell wall 12 of the fuel tank, there are high-pressure sleeves 15 and low;
the transformer body is arranged in a space enclosed by an oil tank body and comprises a plane wound iron core 21, a high-voltage coil 22, a low-voltage coil 23, an upper clamping piece 24 and a lower clamping piece 25, wherein the low-voltage coil 23 is sleeved outside the plane wound iron core 21, the high-voltage coil 22 is sleeved outside the low-voltage coil 23, the upper clamping piece 24 is arranged at the upper ends of the high-voltage coil 22 and the low-voltage coil 23, the lower clamping piece 25 is arranged at the lower ends of the high-voltage coil 22 and the low-voltage coil 23, the upper clamping piece 24 and the lower clamping piece 25 are fixedly connected through a connecting rod 26, the high-voltage coil 22 and the low-voltage coil 23 are respectively clamped by the upper clamping piece 24 and the lower clamping piece 25 from the upper side and the lower side, the upper clamping piece 24 and the lower clamping piece 25 are made of aluminum alloy, and when the upper clamping piece 24 and;
the heat dissipation device is fixed on the outer wall of the wall 12 of the oil tank, and guides the heat of the transformer oil in the oil tank body to the outside, so that the oil tank body is in a stable and reliable temperature state.
Through the replacement of materials and reasonable structural layout, the oil-immersed transformer has the advantages of small density, light weight, strong heat dissipation capability, no magnetic conduction and high mechanical strength, and has the characteristics of small volume, light weight, good heat dissipation effect and stable running state.
Additionally, in the present embodiment, the planar wound core 21 is a single-phase three-limb core; in other embodiments, the planar wound core may be a three-phase three-limb core.
In this embodiment, the aluminum alloy material is a nano aluminum alloy composite material, the nano aluminum alloy composite material includes a nano aluminum alloy and carbon nanoparticles, the nano aluminum alloy composite material is prepared by compositing the carbon nanoparticles in the nano aluminum alloy, wherein the carbon nanoparticles are directionally arranged parallel to the surface of the nano aluminum alloy composite material, the nano aluminum alloy composite material has the characteristics of light weight, high strength, good thermal conductivity, good electrical conductivity and the like, and the nano aluminum alloy composite material has good processability and can be manufactured by different processing technologies such as stamping, tensile extrusion or rolling welding. The fuel tank cover plate 11, the fuel tank shell wall 12, the fuel tank bottom plate 13, the two fuel tank fixing seats 14, the upper clamping piece 24, the lower clamping piece 25 and the heat dissipation fins 30 in the heat dissipation device are all made of the material.
As a preferred mode, the planar wound iron core is formed by continuously winding silicon steel sheets with different widths, and more particularly, the planar wound iron core is formed by respectively and continuously winding the silicon steel sheets with different widths by using special winding equipment according to the required thicknesses, and then combining the silicon steel sheets with different widths, so that the planar wound iron core has the characteristics of low no-load loss and no-load current and compact and reasonable structure, and improves the operation reliability of products.
Referring to fig. 3, as another preferred mode, the planar wound core 21 includes an amorphous alloy core 211 and a cladding layer 212, the cladding layer 212 is disposed on an outer surface of the amorphous alloy core 211, a shape of the cladding layer 212 is adapted to an outer shape of the amorphous alloy core 211, a magnetic permeable colloidal layer 213 is further disposed between the cladding layer 212 and the amorphous alloy core 211, the magnetic permeable colloidal layer 213 is filled between the cladding layer 212 and the amorphous alloy core 211, phenolic epoxy resin is coated on electromagnetic wires of the high-voltage coil 22 and the low-voltage coil 23, and the cladding layer 212 is also made of a nano aluminum alloy composite material, so that the planar wound core has advantages of high strength, light weight and good strength; the coating layer 212 is arranged on the outer layer of the amorphous alloy iron core 211, so that a relatively independent space is provided for the amorphous alloy iron core 211, the situation that the transformer oil is polluted by scraps generated by damage in the operation process of the amorphous alloy iron core 211 is avoided, the follow-up maintenance is facilitated, the operation reliability is improved, and the sudden short circuit resistance of the amorphous alloy iron core 211 is also improved.
In the embodiment, the cross section of the oil tank shell wall 12 is in an oblong shape, and the cross section consists of two semicircles and two straight lines, so that the utilization of the internal space is more efficient, and the transformer oil is more saved; preferably, the heat dissipation device includes two sets of heat dissipation fins 30, the heat dissipation fins 30 are formed by one-step molding, the heat dissipation fins 30 include a heat dissipation bottom plate and a plurality of heat dissipation fins, the heat dissipation fins are fixed to one side of the heat dissipation bottom plate side by side and are in a comb-shaped structure, the other side of the heat dissipation bottom plate is fixed to the vertical side of the oil tank shell wall 12, that is, the vertical side where two straight lines are located in the cross section is fixed, and the two sets of heat dissipation fins 30 are. In addition, a plurality of heat dissipation ribs are arranged on the inner wall of the oil tank shell wall 12, the heat dissipation ribs are arranged along the circumferential direction of the inner wall of the oil tank shell wall 12, and the plurality of heat dissipation ribs are distributed side by side from top to bottom, so that heat conduction between the transformer oil and the oil tank shell wall 12 is facilitated. Additionally, multiple sets of cooling fins can be arranged according to actual needs.
In order to enhance the heat dissipation effect of the heat dissipation device, the following two embodiments can be adopted in the present embodiment.
As an implementation mode, the heat dissipation device further includes a plurality of phase-change heat pipe radiators, each phase-change heat pipe radiator includes a hot end and a cold end, the cold end of each phase-change heat pipe radiator is connected to the heat dissipation fins, the hot end of each phase-change heat pipe radiator is connected to a heat dissipation block, and the heat dissipation block is provided with corrugated toothed heat dissipation fins.
It should be noted that the phase change material is arranged inside the phase change heat pipe radiator, phase change of a gas state and a liquid state is completed in the heat pipe, wherein heat on the heat dissipation fins is absorbed at the cold end and transferred to the hot end, and heat is released through the heat dissipation block connected with the hot end, so that heat transfer is realized, the temperature of the heat dissipation fins is effectively reduced, and further the temperature of transformer oil is reduced.
Preferably, the heat dissipation block is correspondingly provided with a heat dissipation fan, which is different from the natural heat exchange mode, and the scheme adopts a forced convection heat exchange mode, so that the heat dissipation of the heat dissipation fins is more efficient.
As another embodiment, the heat dissipation device further comprises a plurality of semiconductor heat exchange units, each semiconductor heat exchange unit comprises a hot end and a cold end, the cold ends of the semiconductor heat exchange units are connected to the heat dissipation fins, the hot ends of the semiconductor heat exchange units are connected with a heat dissipation block, and the heat dissipation block is provided with corrugated toothed heat dissipation fins.
It should be noted that, under the condition of power-on of the semiconductor heat exchange unit, heat transfer is realized at the cold end and the hot end thereof, and in the same way, the cold end is used for absorbing heat on the heat dissipation fins and transferring the heat to the hot end, and then heat release is performed through the heat dissipation block connected with the hot end, so that heat transfer is realized, the temperature of the heat dissipation fins is effectively reduced, and further the temperature of transformer oil is reduced.
Preferably, the heat dissipation block is correspondingly provided with a heat dissipation fan, which is different from the natural heat exchange mode, and the scheme adopts a forced convection heat exchange mode, so that the heat dissipation of the heat dissipation fins is more efficient.
Compared with the prior art, the invention provides an oil-immersed transformer, wherein an oil tank body is made of an aluminum alloy material, an upper clamping piece 24 and a lower clamping piece 25 are also made of an aluminum alloy material, and the aluminum alloy material is a nano aluminum alloy composite material and has the advantages of small density, light weight, strong heat dissipation capability, non-magnetic property and high mechanical strength, so that the transformer is small in size, light in weight, good in heat dissipation effect and stable in running state;
the invention provides an oil-immersed transformer, which adopts a planar wound iron core 21 structure, wherein a coating layer 212 is covered on the outer surface of an amorphous alloy iron core 211, and a magnetic conductive colloid layer 213 is filled in a gap between the coating layer 212 and the amorphous alloy iron core 211, so that the pollution of the amorphous alloy iron core 211 to transformer oil caused by chips generated by damage in the operation process can be avoided, the subsequent maintenance is facilitated, and the operation reliability is improved;
the invention provides an oil-immersed transformer, wherein a heat dissipation device comprises two groups of heat dissipation fins 30 and a phase-change heat pipe radiator or a semiconductor heat exchange unit, wherein the heat dissipation fins 30 are tightly attached to the side surface of the wall 12 of an oil tank to conduct out the heat of transformer oil in the oil tank, the heat dissipation capacity of the phase-change heat pipe radiator or the semiconductor heat exchange unit is utilized, the cold end is connected with the heat dissipation fins on the heat dissipation fins 30, the hot end is connected with a heat dissipation block, and the heat dissipation is enhanced through forced convection heat exchange, so that the heat conduction of the heat dissipation fins 30 is faster, and.
Finally, it should be emphasized that the present invention is not limited to the above-described embodiments, but only the preferred embodiments of the invention have been described above, and the present invention is not limited to the above-described embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An oil-immersed transformer is characterized by comprising an oil tank body, a transformer body and a heat dissipation device;
the oil tank body is made of an aluminum alloy material and comprises an oil tank cover plate, an oil tank shell wall, an oil tank bottom plate and two oil tank fixing seats, wherein the upper end and the lower end of the oil tank shell wall are open, the oil tank bottom plate is fixed on the lower edge of the oil tank shell wall, the appearance of the oil tank bottom plate is matched with the lower end opening of the oil tank shell wall, the oil tank fixing seats are fixed on the lower portion of the oil tank bottom plate, the oil tank cover plate is fixed on the upper edge of the oil tank shell wall, the appearance of the oil tank cover plate is matched with the upper end opening of the oil tank shell wall, and a;
the transformer body is arranged in a space enclosed by the oil tank body and comprises a plane wound iron core, a high-voltage coil, a low-voltage coil, an upper clamping piece and a lower clamping piece, the low-voltage coil is sleeved outside the plane wound iron core, the high-voltage coil is sleeved outside the low-voltage coil, the upper clamping piece is arranged at the upper ends of the high-voltage coil and the low-voltage coil, the lower clamping piece is arranged at the lower ends of the high-voltage coil and the low-voltage coil, the upper clamping piece and the lower clamping piece are fixedly connected through a connecting rod, the upper clamping piece and the lower clamping piece clamp the high-voltage coil and the low-voltage coil from the upper side and the lower side respectively, and the upper clamping piece;
the heat dissipation device is fixed on the outer wall of the oil tank shell.
2. The oil-filled transformer of claim 1, wherein the aluminum alloy material is a nano aluminum alloy composite material, the nano aluminum alloy composite material comprises nano aluminum alloy and carbon nanoparticles, and the carbon nanoparticles are oriented parallel to the surface of the nano aluminum alloy composite material.
3. An oil filled transformer according to claim 2, characterized in that the tank shell wall is oblong in cross-section.
4. The oil-filled transformer according to claim 3, wherein the planar wound core is formed by continuously winding silicon steel sheets with different widths.
5. The oil-immersed transformer of claim 3, wherein the planar wound core comprises an amorphous alloy core and a coating layer, the coating layer is disposed on an outer surface of the amorphous alloy core, a shape of the coating layer is adapted to an outer shape of the amorphous alloy core, and a magnetically permeable colloidal layer is further disposed between the coating layer and the amorphous alloy core and filled between the coating layer and the amorphous alloy core.
6. The oil-filled transformer of claim 5, wherein the heat sink comprises two sets of heat sinks, the heat sinks comprise a heat sink base plate and a plurality of heat sinks, the heat sinks are fixed on one side of the heat sink base plate side by side, the other side of the heat sink base plate is fixed on a vertical side surface of the wall of the oil tank, and the two sets of heat sinks are arranged oppositely.
7. The oil-filled transformer of claim 6, wherein the heat dissipation device further comprises a plurality of phase-change heat pipe radiators, each phase-change heat pipe radiator comprises a hot end and a cold end, the cold end of each phase-change heat pipe radiator is connected to the heat dissipation fins, the hot end of each phase-change heat pipe radiator is connected to a heat dissipation block, and the heat dissipation block is provided with corrugated-tooth-shaped heat dissipation fins.
8. The oil-filled transformer of claim 7, wherein the heat dissipation block is correspondingly provided with a heat dissipation fan.
9. The oil-filled transformer of claim 6, wherein the heat dissipation device further comprises a plurality of semiconductor heat exchange units, each semiconductor heat exchange unit comprises a hot end and a cold end, the cold ends of the semiconductor heat exchange units are connected to the heat dissipation fins, the hot ends of the semiconductor heat exchange units are connected to a heat dissipation block, and the heat dissipation block is provided with corrugated-tooth-shaped heat dissipation fins.
10. The oil-filled transformer according to any one of claims 1 to 9, wherein the planar wound core is a single-phase three-limb core or a three-phase three-limb core.
CN202110045265.3A 2021-01-13 2021-01-13 Oil-immersed transformer Pending CN112863820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110045265.3A CN112863820A (en) 2021-01-13 2021-01-13 Oil-immersed transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110045265.3A CN112863820A (en) 2021-01-13 2021-01-13 Oil-immersed transformer

Publications (1)

Publication Number Publication Date
CN112863820A true CN112863820A (en) 2021-05-28

Family

ID=76003598

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110045265.3A Pending CN112863820A (en) 2021-01-13 2021-01-13 Oil-immersed transformer

Country Status (1)

Country Link
CN (1) CN112863820A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114608656A (en) * 2022-03-15 2022-06-10 华北电力大学（保定） Transformer internal multi-physical-quantity state monitoring platform

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114608656A (en) * 2022-03-15 2022-06-10 华北电力大学（保定） Transformer internal multi-physical-quantity state monitoring platform

Similar Documents

Publication Publication Date Title
US9148984B2 (en) High-power electromagnetic assembly
US20110227681A1 (en) Liquid cooled inductor apparatus and method of use thereof
CN103117151A (en) Water-cooled reactor with heat conducted by heat tubes
CN102568765A (en) Water-cooled reactor
CN112863820A (en) Oil-immersed transformer
CN2239654Y (en) Dry transformer cooled by thermal pipe
KR20100132111A (en) A winding wire heat pipe for cooling for transfomer
CN214624682U (en) Oil-immersed transformer
US20140116651A1 (en) Heat sink applicable for eletromagnetic device
CN101651376B (en) Electric machine stator winding heat dissipation method and device
CN200990701Y (en) Internal thermal circulating radiator for cooling electro magnetic equipment
CN102682961B (en) Shell-type transformer with improved heat dissipation performance
CN102682962B (en) Heat dissipation method for intermediate frequency amorphous alloy shell type transformer
CN206726918U (en) A kind of air-cooled DC flat-wave reactor
CN201233799Y (en) Rectifying transformer
CN110164667A (en) A kind of dry-type transformer convenient for heat dissipation
CN214312866U (en) High-heat-dissipation dry-type reactor
CN213716685U (en) Magnetic part with low resistance and high heat dissipation capacity
CN215868926U (en) Waterproof epoxy resin pouring dry-type transformer
CN212625080U (en) Comprehensive loss reduction structure of oil-immersed transformer
CN204904984U (en) Epoxy resin casting internal water cooling phase -shifting transformer is with moving looks coil
CN217280372U (en) Wind power reactor with special-shaped clamping piece
CN213752264U (en) High-efficient cooling structure of transformer
CN213519518U (en) High-safety iron core reactor structure
CN211828440U (en) On-load voltage regulation dry-type power transformer

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination