CN210668015U

CN210668015U - Oil-cooled heat dissipation transformer

Info

Publication number: CN210668015U
Application number: CN201921881994.7U
Authority: CN
Inventors: 范利东; 范水明; 范利刚; 郑建红; 陆冬; 余宁
Original assignee: Quzhou Hangyong Transformer Co ltd
Current assignee: Quzhou Hangyong Transformer Co ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-06-02
Anticipated expiration: 2029-11-04

Abstract

The utility model provides an oil cooling transformer that dispels heat belongs to transformer heat dissipation technical field. The heat dissipation outer frame solves the problem that the heat dissipation outer frame of the existing transformer is poor in heat dissipation effect because a plurality of oil delivery pipes are generally directly communicated with an oil tank of the transformer and oil circulation heat dissipation is carried out through the oil delivery pipes. The utility model discloses a transformer body and set up in the outer oil tank frame of transformer body, oil tank frame side is surrounded has defeated oil pipe of a plurality of vertical settings, still is equipped with on the oil tank frame with the inlet port and the oil outlet of defeated oil pipe intercommunication, the inlet port sets up in oil tank frame upper end, the oil outlet sets up in oil tank frame lower extreme, still installs the guide duct in every defeated oil pipe, the guide duct inner wall still is equipped with the heat dissipation tooth of a plurality of even settings. The utility model has the advantages of the radiating efficiency is high, production degree of automation is high, easy modular production, product light in weight, cost of transportation low, the retrieval and retrieval value is high, small, and corrosion resisting property is good.

Description

Oil-cooled heat dissipation transformer

Technical Field

The utility model relates to a transformer heat dissipation technical field specifically is an oil cooling transformer that dispels heat.

Background

The high-frequency transformer generates copper loss and iron loss during operation, and the two losses are finally converted into heat energy, so that an iron core and a winding of the high-frequency transformer generate heat, and the temperature of the high-frequency transformer is increased; in addition, the winding is heated by current, and when the heat of the high-frequency transformer is dissipated to the environment to reach thermal balance, the temperature of each part of the high-frequency transformer is a stable value. If the temperature of each part of the high-frequency transformer exceeds the allowable range for a long time, especially if the oil temperature of the high-frequency transformer is higher than the normal temperature by more than 10 ℃ or the temperature is continuously increased, the insulation of the high-frequency transformer is easily damaged, and the high-frequency transformer is easily broken down by high voltage to cause faults or accidents. Therefore, the allowable temperature of the insulation is not allowed to be exceeded when the transformer is normally operated.

Since the loss of a transformer is proportional to its volume, as the capacity of the transformer increases, its volume and loss will increase to the third power of the core size, while the outer surface area only increases to the second power of the size. Therefore, the large-capacity transformer core and the winding should be immersed in oil and various cooling measures should be taken. The heat dissipation outer frame of the existing transformer is generally formed by directly communicating a plurality of oil conveying pipes with a transformer oil tank, and oil circulation heat dissipation is carried out through the oil conveying pipes, however, in the heat dissipation process of the structure, the contact area of the oil and the oil conveying pipes is limited, heat cannot be effectively dissipated, and therefore heat dissipation efficiency is not high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a to the above-mentioned problem that exists among the prior art, provide a oil cooling transformer that the radiating effect is good.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: the utility model provides an oil-cooling heat dissipation transformer, includes the transformer main part and sets up in the outer oil tank frame of transformer main part, its characterized in that, oil tank frame side surround and have a plurality of vertical defeated oil pipes that set up, the oil tank frame on still be equipped with the inlet port and the oil outlet of defeated oil pipe intercommunication, the inlet port set up in oil tank frame upper end, the oil outlet set up in oil tank frame lower extreme, every the defeated oil pipe in still install the guide duct, the guide duct inner wall still be equipped with the heat dissipation tooth of a plurality of even settings.

The utility model discloses a theory of operation: when the transformer works, transformer oil in a transformer oil tank rises by heating and enters an oil delivery pipe through an oil inlet, when the oil enters the oil delivery pipe, the oil can be contacted with the inner wall of the oil delivery pipe and the outer wall of an air guide pipe, partial heat dissipation can be carried out on the outer wall of the oil delivery pipe, due to the principle that cold air rises and falls, when the temperature of the air guide pipe rises, the air temperature in the air guide pipe rises and can be discharged from an opening at the upper end of the air guide pipe, cold air below the air guide pipe is supplemented continuously, the air guide pipe is heated and rises continuously in the process of introduction, the chimney-like effect is formed, the oil flows back into the oil tank through an oil outlet after being cooled and falls by. Compared with the existing heat dissipation mode, the structure can greatly improve the heat dissipation effect and efficiency, and is compact in structure and space-saving.

In the oil-cooled heat dissipation transformer, the inner wall of the air duct and the outer surface of the heat dissipation teeth are both provided with corrugated bulges.

In the oil-cooled heat dissipation transformer, the peripheral wall of the oil delivery pipe is further provided with a plurality of heat dissipation fins, and the length of each heat dissipation fin is consistent with that of the oil delivery pipe.

In the oil-cooled heat dissipation transformer, the cross sections of the oil delivery pipe and the air guide pipe are both circular.

In the oil-cooled heat dissipation transformer, the oil tank frame, the oil delivery pipe and the air guide pipe are all made of nano aluminum alloy composite materials.

In foretell oil-cooled heat dissipation transformer, the oil tank frame divide into flexion and planoconvex portion, the both sides of flexion and planoconvex portion all be equipped with mosaic structure, the flexion set up in the corner of oil tank frame, planoconvex portion set up in the plane department of oil tank frame.

In the above oil-cooled heat dissipation transformer, the splicing structure includes a trapezoidal protrusion, and the trapezoidal protrusion is provided with a convex strip or a groove.

In an above-mentioned oil-cooling heat dissipation transformer, the defeated oil pipe quantity on the plane portion is two, two defeated oil pipe between still be equipped with connection baffle.

In the oil-cooled heat dissipation transformer, the number of the oil delivery pipes on the bending part is two, and a fixing hole is further formed between the two oil delivery pipes.

In the oil-cooled heat dissipation transformer, the bending angle of the oil tank frame at the bending part is 90 degrees, and the heat dissipation fins on the oil tank frame at the plane part are all vertically arranged relative to the oil tank frame main body.

Compared with the prior art, the oil-cooled heat dissipation transformer adopting the technical scheme has the beneficial effects that: the utility model discloses radiating efficiency is high, production degree of automation is high, easy modular production, product light in weight, cost of transportation low, the retrieval and utilization value is high, small, advantage that corrosion resisting property is good.

Drawings

Fig. 1 is an isometric schematic view of the present invention;

fig. 2 is a plan view of the fuel tank frame of the present invention;

FIG. 3 is a schematic isometric view of a tank frame portion of the present invention;

FIG. 4 is a schematic view of an embodiment of the present invention;

fig. 5 is a schematic view of another embodiment of the present invention.

In the figure, 1, a fuel tank frame; 2. an air guide pipe; 3. a heat dissipating fin; 4. connecting a baffle plate; 5. a fixing hole; 6. A bending section; 7. a planar portion; 8. splicing structures; 9. a trapezoidal protrusion; 10. a convex strip; 11. a groove; 12. An oil delivery pipe; 13. an oil inlet hole; 14. an oil outlet hole; 15. a heat dissipating tooth; 16. a corrugated protrusion; 17. a transformer body.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-5, the oil-cooled heat dissipation transformer comprises a transformer main body 17 and an oil tank frame 1 arranged outside the transformer main body 17, wherein a plurality of oil delivery pipes 12 are vertically arranged on the side surface of the oil tank frame 1 in a surrounding manner, the oil tank frame 1 is further provided with an oil inlet hole 13 and an oil outlet hole 14 communicated with the oil delivery pipes 12, the oil inlet hole 13 is arranged at the upper end of the oil tank frame 1, the oil outlet hole 14 is arranged at the lower end of the oil tank frame 1, each oil delivery pipe 12 is further internally provided with an air guide pipe 2, and the inner wall of the air guide pipe 2 is further provided with a plurality of heat dissipation teeth 15 which are uniformly arranged. Air cooling and oil cooling are carried out simultaneously, and compared with single oil cooling or single air cooling, the heat dissipation effect is greatly improved. The air guide pipe 2 and the oil conveying pipe 12 can be connected by welding through a welding flange.

In more detail, the inner wall of the air guide pipe 2 and the outer surface of the heat dissipation teeth 15 are both provided with corrugated bulges 16. The corrugated bulges 16 can further increase the contact area between the inner wall of the air guide pipe 2 and the heat dissipation teeth 15 and the air, and improve the heat dissipation effect.

In a further elaboration, the peripheral wall of the oil delivery pipe 12 is further provided with a plurality of radiating fins 3, and the length of each radiating fin 3 is consistent with that of the oil delivery pipe 12. The heat dissipation area is increased, and the heat dissipation efficiency is improved.

In more detail, the cross-sectional shapes of the oil delivery pipe 12 and the air guide pipe 2 are both circular. The round shape has higher structural strength than the square shape, and the round shape has higher space utilization rate than the square shape and other shapes.

In more detail, the oil tank frame 1, the oil delivery pipe 12 and the air guide pipe 2 are all made of nano aluminum alloy composite materials. The nano aluminum alloy composite material has the advantages of light weight, high strength, high rigidity, high shearing strength, small thermal expansion, high thermal stability, excellent electric conduction, heat conduction, wear resistance, corrosion resistance and the like, can be difficultly corroded during sea transportation, has a reinforcing effect far higher than that of micron-sized particles, has good interface bonding strength, has a smaller thermal expansion coefficient than that of micron-sized particles under the same volume fraction, is small in thermal residual stress, high in size stability, and improved in room temperature plasticity and high temperature creep property, and greatly improves the heat dissipation effect of the air-cooled heat dissipation oil tank frame of the transformer.

In a further elaboration, each oil conveying pipe 12 is provided with three radiating fins 3, and the cross section of each radiating fin 3 is in a T shape. The number of the radiating fins 3 can be more than three, and the number of the radiating fins 3 is preferably three, so that the distances among the six radiating fins 3 on the two oil pipelines 12 are basically consistent, the appearance is more harmonious and attractive, and the radiating effect is good.

In a further elaboration, the oil tank frame 1 be divided into a bending portion 6 and a plane portion 7, the two sides of the bending portion 6 and the plane portion 7 are both provided with a splicing structure 8, the bending portion 6 is arranged at a corner of the oil tank frame 1, and the plane portion 7 is arranged at a plane of the oil tank frame 1. The bent portion 6 may have any angle such as a right angle, an obtuse angle, an acute angle, or the like, or may have a circular arc shape.

By adopting the structure, the oil tank frame 1 of the oil cooling transformer can be formed into square, rectangular, oval, triangular and other shapes, and the combination mode is various. Fig. 2 shows a square combination, fig. 4 shows a circular combination, and fig. 5 shows a triangle combination.

In further detail, the splicing structure 8 comprises a trapezoidal protrusion 9, and a convex strip 10 or a groove 11 is arranged on the trapezoidal protrusion 9. Trapezoidal arch 9 can increase the welding area of junction, promotes the intensity of junction simultaneously, and sand grip 10 and the cooperation of recess 11 are connected.

In more detail, the number of the oil delivery pipes 12 on the plane part 7 is two, and a connecting baffle 4 is further arranged between the two oil delivery pipes 12. The connecting baffle 4 can increase the strength, and meanwhile, a cavity similar to the air guide pipe 2 can be formed between the oil delivery pipe 12 and the oil tank frame 1, so that the effect of the air guide pipe 2 can be achieved, and the heat dissipation effect of the outer surface of the oil delivery pipe 12 is accelerated.

In more detail, the number of the oil delivery pipes 12 on the bending part 6 is two, and a fixing hole 5 is further arranged between the two oil delivery pipes 12. The fixing hole 5 can fix the tank frame 1.

In more detail, the bending angle of the oil tank frame 1 at the bending part 6 is 90 degrees, and the radiating fins 3 on the oil tank frame 1 at the plane part 7 are all vertically arranged relative to the main body of the oil tank frame 1. The bending part is provided with a round angle. The space utilization rate is improved, and the heat dissipation is more uniform.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the tank frame 1, the air guide pipe 2, the heat dissipation fins 3, the connection baffle 4, the fixing hole 5, the bent portion 6, the flat portion 7, the splice structure 8, the trapezoidal protrusion 9, the convex strip 10, the groove 11, the oil pipe 12, the oil inlet hole 13, the oil outlet hole 14, the heat dissipation teeth 15, the corrugated protrusion 16, the transformer body 17, etc. are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides an oil cooling transformer that dispels heat, includes transformer main part (17) and sets up in oil tank frame (1) outside transformer main part (17), its characterized in that, oil tank frame (1) side surround have a plurality of vertical defeated oil pipe (12) that set up, oil tank frame (1) on still be equipped with inlet port (13) and oil outlet (14) with defeated oil pipe (12) intercommunication, inlet port (13) set up in oil tank frame (1) upper end, oil outlet (14) set up in oil tank frame (1) lower extreme, every defeated oil pipe (12) in still install guide duct (2), guide duct (2) inner wall still be equipped with a plurality of heat dissipation teeth (15) that evenly set up.

2. The oil-cooled heat dissipation transformer according to claim 1, wherein corrugated protrusions (16) are arranged on the inner wall of the air guide pipe (2) and the outer surface of the heat dissipation teeth (15), a plurality of heat dissipation fins (3) are further arranged on the outer peripheral wall of the oil delivery pipe (12), and the length of each heat dissipation fin (3) is consistent with that of the oil delivery pipe (12).

3. The oil-cooled heat dissipation transformer of claim 1, wherein the cross-sectional shapes of the oil delivery pipe (12) and the air guide pipe (2) are both circular.

4. The oil-cooled heat dissipation transformer of claim 1, wherein the oil tank frame (1), the oil delivery pipe (12) and the air guide pipe (2) are all made of nano aluminum alloy composite materials.

5. An oil-cooled heat dissipation transformer according to claim 1, wherein the tank frame (1) is divided into a curved portion (6) and a flat portion (7), the curved portion (6) and the flat portion (7) are provided with splicing structures (8) on both sides, the curved portion (6) is disposed at a corner of the tank frame (1), and the flat portion (7) is disposed at a plane of the tank frame (1).

6. An oil-cooled heat-dissipating transformer according to claim 5, characterized in that the splicing structure (8) comprises trapezoidal protrusions (9), and the trapezoidal protrusions (9) are provided with ribs (10) or grooves (11).

7. An oil-cooled heat-dissipating transformer according to claim 5, characterized in that the number of the oil delivery pipes (12) on the planar portion (7) is two, and a connection baffle (4) is further provided between the two oil delivery pipes (12).

8. An oil-cooled heat dissipation transformer according to claim 5, characterized in that the number of the oil delivery pipes (12) on the bending part (6) is two, and a fixing hole (5) is further provided between the two oil delivery pipes (12).

9. An oil-cooled heat-dissipation transformer according to claim 5, characterized in that the bending angle of the tank frame (1) at the bending part (6) is 90 °, and the heat-dissipation fins (3) on the tank frame (1) at the flat part (7) are all vertically arranged relative to the body of the tank frame (1).