CN110676024A

CN110676024A - Air-cooled heat dissipation oil tank of transformer

Info

Publication number: CN110676024A
Application number: CN201911065927.2A
Authority: CN
Inventors: 郭萍; 范利东; 范水明; 杨慧峰; 余婵; 黄桦
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: 2020-01-10

Abstract

The invention provides an air-cooled heat dissipation oil tank for a transformer, and belongs to the technical field of transformer heat dissipation. It has solved the oil tank of current small-size transformer and has carried out passive heat dissipation through the radiating fin who sets up outside the oil tank usually, however the radiating efficiency of this kind of structure is not high, influences the problem of the operation of transformer. The invention comprises an oil tank frame main body and an oil tank base arranged at the bottom of the oil tank frame main body, wherein a plurality of vertically arranged air guide pipes are surrounded on the side surface of the oil tank frame main body. The invention has the advantages of good heat dissipation effect, convenient assembly, suitability for mass production and cost reduction.

Description

Air-cooled heat dissipation oil tank of transformer

Technical Field

The invention relates to the technical field of transformer heat dissipation, in particular to an air-cooled heat dissipation oil tank of a transformer.

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. The oil tank of the existing miniature transformer generally carries out passive heat dissipation through the heat dissipation fins arranged outside the oil tank, however, the heat dissipation efficiency of the structure is not high, and the operation of the transformer is influenced.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides the air-cooled radiating oil tank of the transformer, which is less affected by the environmental temperature, high in production efficiency and low in processing cost.

In order to realize the purpose of the invention, the invention adopts the following technical scheme: the air-cooled heat dissipation oil tank of the transformer comprises an oil tank frame main body and an oil tank base arranged at the bottom of the oil tank frame main body, and is characterized in that a plurality of vertically arranged air guide pipes are arranged on the side surface of the oil tank frame main body in a surrounding mode.

The working principle of the invention is as follows: when the transformer works, cold air at the bottom of the transformer rises by heating by utilizing the principle that hot air rises, and the cold air passes through the air guide pipe and carries away heat of the oil tank main body. By adopting the structure, compared with the existing heat dissipation structure, the heat dissipation effect and efficiency can be greatly improved.

In the air-cooled heat dissipation oil tank for the transformer, the outer wall of the air guide pipe is further provided with a plurality of uniformly arranged heat dissipation fins, and the length of each heat dissipation fin is consistent with that of the air guide pipe.

In the air-cooled heat dissipation oil tank for the transformer, the cross section of the air guide pipe is circular.

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

In the air-cooled heat dissipation oil tank for the transformer, the inner wall of the air guide pipe is also provided with a plurality of uniformly arranged heat dissipation teeth.

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

In foretell transformer forced air cooling heat dissipation oil tank, oil tank frame main part be flexion and planar portion, the both sides of flexion and planar portion all be equipped with mosaic structure, the flexion set up in the corner of oil tank frame main part, planar portion set up in the plane department of oil tank frame main part.

In foretell transformer forced air cooling heat dissipation oil tank, mosaic structure include trapezoidal arch, trapezoidal arch on be equipped with sand grip or recess.

In the air-cooled heat dissipation oil tank for the transformer, the bending angle of the oil tank frame main body with the bending part is 90 degrees.

In the air-cooled heat dissipation oil tank for the transformer, the heat dissipation fins on the oil tank frame main body of the planar portion are all vertically arranged relative to the oil tank frame main body.

Compared with the prior art, the transformer air-cooling heat dissipation oil tank adopting the technical scheme has the beneficial effects that: the invention has the advantages of good heat dissipation effect, high processing efficiency, convenient assembly, suitability for mass production and cost reduction.

Drawings

FIG. 1 is a top view of the present invention;

FIG. 2 is an isometric view of a portion of the structure of the present invention;

FIG. 3 is an enlarged view of the air guide duct of the present invention;

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

FIG. 5 is a schematic view of an embodiment of the present invention;

FIG. 6 is a schematic view of another embodiment of the present invention;

figure 7 is a schematic view of an embodiment of the base of the fuel tank of the present invention.

In the figure, 1, a tank frame body; 2. an air guide pipe; 3. a heat dissipating fin; 4. a heat dissipating tooth; 5. a corrugated protrusion; 6. a bending section; 7. a planar portion; 8. splicing structures; 9. a trapezoidal protrusion; 10. a convex strip; 11. a groove; 12. a fuel tank base.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1-7, the transformer air-cooling heat-dissipation oil tank comprises an oil tank frame body 1 and an oil tank base 12 arranged on the oil tank frame body, wherein a plurality of vertically arranged air guide pipes 2 are surrounded on the side surface of the oil tank frame body 1. The heat dissipation effect of air cooling is greatly improved compared with passive heat dissipation. The tank base 12 may have a rectangular, circular, triangular, or oval shape according to the shape of the tank frame body 1.

In a further elaboration, the outer wall of the air guide pipe 2 is also provided with a plurality of radiating fins 3 which are uniformly arranged, and the length of each radiating fin 3 is consistent with that of the air guide pipe 2. The heat dissipation area is increased, and the heat dissipation efficiency is improved.

In more detail, the cross section of the air guide pipe 2 is 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 body 1 and the air guide pipe 2 are both 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 of the transformer.

In more detail, three radiating fins 3 are arranged on each air guide pipe 2, and the cross section of each radiating fin 3 is in a T shape or a 1 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 air guide pipes 2 are basically consistent, the radiating effect is good, and the radiating effect is more harmonious and attractive.

In a further elaboration, the inner wall of the air guide pipe 2 is also provided with a plurality of uniformly arranged heat dissipation teeth 4. The heat dissipation area is increased, and the heat dissipation efficiency is improved.

In more detail, the inner wall of the air guide pipe 2 and the outer surface of the heat dissipation teeth 4 are both provided with corrugated bulges 5. The heat dissipation area is increased, and the heat dissipation efficiency is improved.

In a further elaboration, the oil tank frame main body 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 main body 1, and the plane portion 7 is arranged at a plane of the oil tank frame main body 1. Adopt the modularization setting, can make things convenient for processing and the installation of this oil tank, be fit for mass production simultaneously and come reduction in production cost. Also be equipped with heat radiation structure in the corner of oil tank for the heat dissipation of oil tank is more even, has promoted the radiating effect greatly, has guaranteed the normal operating of transformer. 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 transformer can be formed into shapes of square, rectangle, ellipse, triangle and the like, and the combination mode is diversified. Fig. 4 shows a rectangular combination, fig. 5 shows a circular combination, and fig. 5 shows a triangular 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 bending angle of the bending part 6 of the oil tank frame main body 1 is 90 degrees. The bending part is provided with a round angle.

In more detail, the heat dissipation fins 3 on the tank frame body 1 of the planar portion 7 are all vertically arranged with respect to the tank frame body 1. 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 or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the terms of the tank frame body 1, the air guide duct 2, the heat dissipating fins 3, the heat dissipating teeth 4, the corrugated protrusions 5, the curved portions 6, the flat portions 7, the splice structures 8, the trapezoidal protrusions 9, the convex strips 10, the grooves 11, the tank base 12, 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 as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a transformer forced air cooling heat dissipation oil tank, includes oil tank frame main part (1) and sets up in oil tank base (13) of oil tank frame main part (1) bottom, its characterized in that, oil tank frame main part (1) side surround have a plurality of vertical air guide pipes (2) that set up.

2. The transformer air-cooling heat dissipation oil tank as claimed in claim 1, wherein a plurality of uniformly arranged heat dissipation fins (3) are further arranged on the outer wall of the air guide pipe (2), and the length of each heat dissipation fin (3) is consistent with that of the air guide pipe (2).

3. The transformer air-cooling heat-dissipation oil tank as claimed in claim 1, wherein the cross-sectional shape of the air guide pipe (2) is circular.

4. The transformer air-cooling heat-dissipation oil tank as claimed in claim 1, wherein the oil tank frame body (1) and the air guide pipe (2) are both made of nano aluminum alloy composite materials.

5. The transformer air-cooling heat-dissipation oil tank as claimed in claim 1, wherein the inner wall of the air guide pipe (2) is further provided with a plurality of uniformly arranged heat-dissipation teeth (4).

6. The transformer air-cooling heat-dissipation oil tank as claimed in claim 5, wherein the inner wall of the air guide pipe (2) and the outer surface of the heat-dissipation teeth (4) are provided with corrugated protrusions (5).

7. The air-cooled heat dissipation oil tank of the transformer as recited in claim 1, wherein the oil tank frame body (1) is divided into a bending portion (6) and a flat portion (7), both sides of the bending portion (6) and the flat portion (7) are provided with splicing structures (8), the bending portion (6) is arranged at a corner of the oil tank frame body (1), and the flat portion (7) is arranged at a plane of the oil tank frame body (1).

8. The transformer air-cooling heat-dissipation oil tank as claimed in claim 7, wherein the splicing structure (8) comprises trapezoidal protrusions (9), and the trapezoidal protrusions (9) are provided with raised strips (10) or grooves (11).

9. The transformer air-cooling heat-dissipation oil tank as claimed in claim 7, wherein the bending angle of the bending portion (6) is 90 °; the radiating fins (3) of the plane part (7) are all vertically arranged relative to the main body of the oil tank frame (1).