Cooling fin structure of oil-immersed power transformer

Abstract

The utility model relates to the technical field of transformers, in particular to an oil-immersed power transformer cooling fin structure which comprises a box body, oil collecting boxes and a plurality of cooling fin bodies, the cooling fin bodies are symmetrically distributed on the two sides of the oil collecting boxes, at least every two cooling fin bodies form a cooling fin set, and the oil collecting boxes are located at the two ends of the cooling fin set respectively. Supporting assemblies and reinforcing assemblies are arranged on the two sides, facing the cooling fins, of the box body, the supporting assemblies abut against oil collecting boxes at the bottoms of the cooling fin sets, the two reinforcing assemblies are arranged at equal intervals in the length direction of the cooling fin bodies, one end of each reinforcing assembly is fixedly connected with the outer side wall of the box body, and the other end of each reinforcing assembly penetrates through gaps between the cooling fin bodies. The radiating fins are attached to the outer side surfaces, deviating from the box body, of the radiating fins; convection of transformer oil can be promoted more effectively, and heat exchange efficiency is improved; meanwhile, oil flow can be evenly distributed, and local overheating is avoided; the structural strength of the cooling fin set is remarkably improved, and good safety and adaptability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a heat sink structure of an oil-immersed power transformer. Background Art

[0002] Oil-immersed power transformer is an electrical equipment widely used in power systems. Its main function is to convert voltage levels and realize the transmission and distribution of electric energy. It has the advantages of good heat dissipation performance, low loss, large capacity and relatively low price.

[0003] The heat sink is an important part of the heat dissipation system of the oil-immersed transformer. It can dissipate the heat generated inside the transformer to ensure the safe operation of the transformer. In the related technology, due to the large size of the oil-immersed power transformer, in order to ensure the heat dissipation performance of the transformer, the heat sink is usually large in size and the number of heat sinks arranged in parallel is also large, which leads to a large weight of the heat sink group, making it difficult to ensure its structural strength during transportation and operation, and the heat dissipation efficiency is also difficult to achieve the expected effect.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or any form of implication that the information constitutes the prior art known to those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an oil-immersed power transformer heat sink structure to ensure the structural strength during transportation and operation and to improve the heat dissipation efficiency.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an oil-immersed power transformer heat sink structure, comprising: a box, an oil collecting box and a plurality of heat sink bodies, wherein the plurality of heat sink bodies are arranged along the vertical direction and symmetrically distributed on both sides of the oil collecting box, and at least every two heat sink bodies form a heat sink group, and the oil collecting boxes are respectively located at both ends of the heat sink group and are connected to the box;

[0007] Among them, support components and reinforcement components are provided on both sides of the box body facing the heat sink. The support component is located at the end of the box body close to the ground and abuts against the oil collecting box at the bottom of the heat sink group. Two groups of reinforcement components are provided, which are equally spaced along the length of the heat sink body. One end of each group of reinforcement components is fixedly connected to the outer wall of the box body, and the other end passes through the gap between the heat sink bodies and is fitted with the outer side surface of the heat sink body facing away from the box body.

[0008] Furthermore, the supporting assembly includes a base plate and pillars, one edge of the base plate is fixedly set on the side wall of the box, and the other side extends so that the base plate is arranged opposite to the oil collecting box at the bottom of the heat sink group. There are multiple pillars, which are respectively arranged corresponding to each group of the heat sink groups, one side is fixed to the base plate, and the other side is arranged in contact with the outer side surface of the oil collecting box.

[0009] Furthermore, a transition surface is formed at the connection between the support and the base plate, and the transition surface is arc-shaped.

[0010] Furthermore, the support assembly also includes an inclined support plate, and each of the pillars is correspondingly provided with two inclined support plates, and the two inclined support plates are respectively fixedly arranged on both sides of the pillar along the length direction of the bottom plate and abut against the outer side surface of the oil collecting box.

[0011] Furthermore, the cross section of the diagonal brace plate is a right triangle, one right-angled side of the diagonal brace plate is fixedly connected to the side wall of the pillar, and the other right-angled side is aligned with the top surface of the pillar.

[0012] Furthermore, each group of the reinforcement components includes a first reinforcement plate, a second reinforcement plate and two supporting rods, the first reinforcement plate and the second reinforcement plate are arranged parallel to each other, the two supporting rods pass through the gap between the heat sink bodies and are vertically arranged at both ends of the first reinforcement plate and the second reinforcement plate, and one end of the supporting rod facing the box body is fixedly connected to the side wall of the box body.

[0013] Furthermore, the distance between the first reinforcing plate and the second reinforcing plate is adjustable, the first reinforcing plate is abutted against a side of the heat sink group facing away from the box, and the second reinforcing plate is abutted against a side of the heat sink group facing the box.

[0014] Furthermore, the first reinforcing plate and the second reinforcing plate have the same structure, both comprising a straight plate section and a bent section connected to each other, the straight plate section being arranged in abutment with the side wall of the heat sink group, and the bent section being located on the side of the straight plate section away from the support assembly and being connected to the straight plate section in a 90° arc transition.

[0015] Furthermore, the reinforcement assembly also includes a plurality of auxiliary tie rods, each of which is located between two adjacent heat sink groups, and has two ends connected to the first reinforcement plate and the second reinforcement plate, respectively.

[0016] Furthermore, a fan is fixedly mounted on the auxiliary pull rod, and an air outlet of the fan is arranged toward the gap between the heat sink bodies, and the air outlets of the fans on different reinforcement components are arranged toward different heat sink groups.

[0017] The beneficial effects of the utility model are as follows: the heat sink body of the utility model is arranged in the vertical direction and symmetrically distributed on both sides of the oil collecting box. This layout can more effectively promote the convection of transformer oil and improve the heat exchange efficiency; at the same time, the oil collecting boxes are located at both ends of the heat sink group and are connected to the box body, which helps to evenly distribute the oil flow and avoid local overheating; by arranging support components and reinforcement components on both sides of the box body, the structural strength of the heat sink group can be significantly improved, so that it can withstand greater weight and external force, reduce the risk of deformation and damage during transportation and operation, and have good safety and adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of the heat sink structure of the oil-immersed power transformer in the embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the arrangement positions of the support assembly and the reinforcement assembly in the embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the support assembly in the embodiment of the utility model;

[0022] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0023] Figure 5 This is a schematic diagram of the structure of the reinforcement component in the embodiment of the utility model;

[0024] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0025] Figure numerals: 1. box body; 2. oil collecting box; 3. heat sink body; 4. heat sink group; 10. support assembly; 11. bottom plate; 12. pillar; 12a. transition surface; 13. diagonal support plate; 20. reinforcement assembly; 21. first reinforcement plate; 21a. straight plate section; 21b. bending section; 22. second reinforcement plate; 23. supporting rod; 24. auxiliary pull rod; 25. fan; 25a. air outlet. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] like Figures 1 to 6 The heat sink structure of the oil-immersed power transformer shown in the figure comprises: a box body 1, an oil collecting box 2 and a plurality of heat sink bodies 3, wherein the plurality of heat sink bodies 3 are arranged along the vertical direction and symmetrically distributed on both sides of the oil collecting box 2, and at least every two heat sink bodies 3 form a heat sink group 4, and the oil collecting boxes 2 are respectively located at both ends of the heat sink group 4 and are connected to the box body 1;

[0030] Among them, support components 10 and reinforcement components 20 are provided on both sides of the box body 1 facing the heat sink. The support component 10 is located at the end of the box body 1 close to the ground, and abuts against the oil collecting box 2 at the bottom of the heat sink group 4. Two groups of reinforcement components 20 are provided, which are equally spaced along the length of the heat sink body 3. One end of each group of reinforcement components 20 is fixedly connected to the outer wall of the box body 1, and the other end passes through the gap between the heat sink bodies 3 and is fitted with the outer side surface of the heat sink body 3 facing away from the box body 1.

[0031] The heat sink 3 of the utility model is arranged in the vertical direction and symmetrically distributed on both sides of the oil collecting box 2. This layout can more effectively promote the convection of transformer oil and improve the heat exchange efficiency. At the same time, the oil collecting box 2 is located at both ends of the heat sink group 4 and is connected to the box body 1, which helps to evenly distribute the oil flow and avoid local overheating. By arranging the support component 10 and the reinforcement component 20 on both sides of the box body 1, the structural strength of the heat sink group 4 can be significantly improved, so that it can withstand greater weight and external force, reduce the risk of deformation and damage during transportation and operation, and have good safety and adaptability.

[0032] On the basis of the above embodiment, the support assembly 10 includes a base plate 11 and a pillar 12. An edge of one side of the base plate 11 is fixedly set on the side wall of the housing 1, and the other side extends so that the base plate 11 is arranged opposite to the oil collecting box 2 at the bottom of the heat sink group 4. A plurality of pillars 12 are provided, which are respectively arranged one by one corresponding to each group of heat sink groups 4, one side is fixed on the base plate 11, and the other side is arranged in contact with the outer side surface of the oil collecting box 2; through the base plate 11 and the pillars 12 corresponding to each group of heat sink groups 4, the weight of the heat sink group 4 and the oil collecting box 2 can be effectively supported, and the load between the oil collecting box 2 and the housing 1 can be reduced, thereby improving the durability and enhancing the stability of the entire heat dissipation system; and the combination of the base plate 11 and the pillars 12 provides additional rigidity, which can resist deformation caused by thermal expansion or mechanical vibration, and protect the heat sink body 3 from damage.

[0033] Based on the above embodiment, a transition surface 12a is formed at the connection between the pillar 12 and the base plate 11, and the transition surface 12a is arc-shaped; the arc-shaped transition surface 12a helps to more evenly distribute the connection stress between the pillar 12 and the base plate 11, reduce material fatigue or fracture caused by local stress concentration, and thus extend the service life of the structure.

[0034] On the basis of the above embodiment, the support assembly 10 also includes a diagonal support plate 13, and each pillar 12 is correspondingly provided with two diagonal support plates 13, and the two diagonal support plates 13 are respectively fixedly arranged on both sides of the pillar 12 along the length direction of the base plate 11, and abut against the outer side surface of the oil collecting box 2; the diagonal support plate 13 increases the support points at the connection between the pillar 12 and the base plate 11, thereby improving the strength and rigidity of the structure, so that the heat sink group 4 can better withstand external forces and its own weight; and it can prevent the pillar 12 from bending or deforming due to continuous force during long-term operation, thereby maintaining the supporting effect on the heat sink group 4.

[0035] Based on the above embodiment, the cross-section of the diagonal support plate 13 is a right triangle, one right-angled side of the diagonal support plate 13 is fixedly connected to the side wall of the pillar 12, and the other right-angled side is aligned with the top surface of the pillar 12; the right-angled triangle design allows the diagonal support plate 13 to be more compactly connected to the pillar 12 and the oil collecting box 2, effectively utilizing the limited installation space, and the triangular support structure can significantly improve the stability of the support.

[0036] On the basis of the above embodiments, each group of reinforcement components 20 includes a first reinforcement plate 21, a second reinforcement plate 22 and two supporting rods 23. The first reinforcement plate 21 and the second reinforcement plate 22 are arranged parallel to each other. The two supporting rods 23 pass through the gap between the heat sink body 3 and are vertically arranged at the two ends of the first reinforcement plate 21 and the second reinforcement plate 22, and the supporting rods 23 are fixedly connected to the side wall of the box body 1 at one end facing the box body 1; the first reinforcement plate 21 and the second reinforcement plate 22 arranged in parallel cooperate with the supporting rods 23 to form a stable frame structure, which significantly enhances the rigidity of the heat sink group 4, and disperses the load of the heat sink group 4 to the side wall of the box body 1 through the supporting rods 23, reducing the load borne by the heat sink body 3 alone, thereby improving the durability of the entire structure, helping to reduce heat accumulation and thermal deformation caused by long-term operation, maintaining the shape and position of the heat sink body 3, thereby improving the overall performance and service life of the transformer.

[0037] On the basis of the above embodiment, the spacing between the first reinforcing plate 21 and the second reinforcing plate 22 can be adjusted, the first reinforcing plate 21 is abutted against the side of the heat sink group 4 facing away from the box body 1, and the second reinforcing plate 22 is abutted against the side of the heat sink group 4 facing the box body 1; the adjustable spacing allows the reinforcing component 20 to adapt to heat sink groups 4 of different sizes and shapes, providing design flexibility and versatility; the reinforcing plates can be adjusted according to the specific layout and spacing of the heat sink body 3, so as to balance the heat dissipation gap of the heat sink body 3 and the supporting effect of the reinforcing component 20, so as to achieve optimal structural support and heat conduction effects.

[0038] On the basis of the above-mentioned embodiment, the first reinforcing plate 21 and the second reinforcing plate 22 have the same structure, and both include a straight plate section 21a and a bent section 21b connected to each other. The straight plate section 21a is arranged to abut against the side wall of the heat sink group 4, and the bent section 21b is located on the side of the straight plate section 21a away from the support assembly 10, and is connected to the straight plate section 21a in a 90° arc transition. The first reinforcing plate 21 and the second reinforcing plate 22 have the same structure, which helps to simplify the manufacturing process and reduce production costs. The straight plate section 21a abuts against the side wall of the heat sink group 4, which simplifies the installation steps, so that the reinforcing plate can be quickly and firmly installed on the heat sink group 4. The bent section 21b with a 90° arc transition connection facilitates the holding of the first reinforcing plate 21 and the second reinforcing plate 22 during assembly to avoid direct contact with the heat sink group 4.

[0039] On the basis of the above embodiment, the reinforcement component 20 also includes a plurality of auxiliary tie rods 24, which are located between two adjacent heat sink groups 4, and whose two ends are respectively connected to the first reinforcement plate 21 and the second reinforcement plate 22; by arranging additional auxiliary tie rods 24 between the two supporting rods 23 to connect the first reinforcement plate 21 and the second reinforcement plate 22 between the adjacent heat sink groups 4, the rigidity of the entire heat dissipation system is further increased.

[0040] On the basis of the above embodiment, a fan 25 is also fixedly arranged on the auxiliary pull rod 24, and the air outlet 25a of the fan 25 is arranged toward the gap between the heat sink bodies 3, and the air outlets 25a of the fans 25 on different reinforcement components 20 are oriented toward different heat sink groups 4; the air flow is enhanced by the fan 25, so that the heat is quickly transferred from the gap around the heat sink body 3 to other positions, thereby improving the heat dissipation efficiency, and the air outlet 25a of the fan 25 is oriented toward different heat sink groups 4, which can provide directional heat dissipation and expand the heat dissipation area, thereby more effectively reducing the temperature of the heat sink group 4 in the corresponding area.

[0041] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A heat sink structure for an oil-immersed power transformer, characterized in that: include: A box body, an oil collecting box and a plurality of heat sinks, wherein the plurality of heat sinks are arranged along the vertical direction and symmetrically distributed on both sides of the oil collecting box, and at least every two heat sinks form a heat sink group. The oil collecting boxes are respectively located at both ends of the heat sink group and are connected to the box body; Among them, support components and reinforcement components are provided on both sides of the box body facing the heat sink. The support component is located at the end of the box body close to the ground and abuts against the oil collecting box at the bottom of the heat sink group. Two groups of reinforcement components are provided, which are equally spaced along the length of the heat sink body. One end of each group of reinforcement components is fixedly connected to the outer wall of the box body, and the other end passes through the gap between the heat sink bodies and is fitted with the outer side surface of the heat sink body facing away from the box body.

2. The heat sink structure of the oil-immersed power transformer according to claim 1 is characterized in that: The supporting assembly includes a base plate and pillars. One edge of the base plate is fixedly arranged on the side wall of the box body, and the other side extends so that the base plate is arranged opposite to the oil collecting box at the bottom of the heat sink group. There are multiple pillars, which are arranged one by one corresponding to each group of the heat sink groups, one side is fixed to the base plate, and the other side is arranged in contact with the outer side surface of the oil collecting box.

3. The heat sink structure of the oil-immersed power transformer according to claim 2 is characterized in that: A transition surface is formed at the connection between the support and the bottom plate, and the transition surface is arc-shaped.

4. The heat sink structure of the oil-immersed power transformer according to claim 2 is characterized in that: The support assembly also includes an inclined support plate. Each of the pillars is correspondingly provided with two inclined support plates. The two inclined support plates are respectively fixedly provided on both sides of the pillar along the length direction of the bottom plate and abut against the outer side surface of the oil collecting box.

5. The heat sink structure of the oil-immersed power transformer according to claim 4 is characterized in that: The cross section of the diagonal support plate is a right triangle, one right-angled side of the diagonal support plate is fixedly connected to the side wall of the pillar, and the other right-angled side is aligned with the top surface of the pillar.

6. The heat sink structure of the oil-immersed power transformer according to claim 1, characterized in that: Each group of the reinforcement components includes a first reinforcement plate, a second reinforcement plate and two supporting rods. The first reinforcement plate and the second reinforcement plate are arranged parallel to each other. The two supporting rods pass through the gap between the heat sink bodies and are vertically arranged at the two ends of the first reinforcement plate and the second reinforcement plate. The supporting rods are fixedly connected to the side wall of the box body at one end facing the box body.

7. The heat sink structure of the oil-immersed power transformer according to claim 6, characterized in that: The distance between the first reinforcing plate and the second reinforcing plate is adjustable. The first reinforcing plate is abutted against a side of the heat sink group facing away from the box body, and the second reinforcing plate is abutted against a side of the heat sink group facing the box body.

8. The heat sink structure of the oil-immersed power transformer according to claim 7, characterized in that: The first reinforcing plate and the second reinforcing plate have the same structure, and both include a straight plate section and a bent section that are connected to each other. The straight plate section is arranged in abutment with the side wall of the heat sink group, and the bent section is located on the side of the straight plate section away from the support assembly, and is connected to the straight plate section in a 90° arc transition.

9. The heat sink structure of the oil-immersed power transformer according to claim 6, characterized in that: The reinforcement assembly further includes a plurality of auxiliary tie rods, each of which is located between two adjacent heat sink groups, and has two ends respectively connected to the first reinforcement plate and the second reinforcement plate.

10. The heat sink structure of the oil-immersed power transformer according to claim 9, characterized in that: A fan is also fixedly arranged on the auxiliary pull rod, and an air outlet of the fan is arranged toward the gap between the heat sink bodies, and the air outlets of the fans on different reinforcing components are arranged toward different heat sink groups.

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