Transformer with improved heat dissipation design

Abstract

The embodiment of the invention provides a transformer with an improved heat dissipation design. The transformer comprises a shell, an iron core and a heat dissipation assembly, the heat dissipation assembly comprises a first heat dissipation part and a second heat dissipation part, the first heat dissipation part comprises a first heat dissipation area, the second heat dissipation part comprises a second heat dissipation area, and the first heat dissipation area is larger than the second heat dissipation area; the outer side wall of the shell comprises an upper area and a lower area, the first heat dissipation part is arranged in the upper area, and the plurality of second heat dissipation parts are arranged in the lower area. According to the embodiment of the invention, the technical effect that the upper part of the transformer can form good heat dissipation is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformers, in particular to a transformer with improved heat dissipation design. BACKGROUND

[0002] As a common power equipment, transformers are widely used, but heat is generated during the working process. In order to improve the heat dissipation effect, the existing transformer usually sets heat dissipation devices such as heat dissipation fins on the outer wall of the transformer.

[0003] However, due to the phenomenon of heat rising, the heat in the upper part of the transformer usually accumulates, so the temperature of the upper part is generally higher than that of the lower part. If the heat dissipation fins are uniformly arranged up and down, it is impossible to form good heat dissipation in the upper part of the transformer. SUMMARY

[0004] The present application is directed to the shortcomings of the prior art, and proposes a transformer with improved heat dissipation design to solve the technical problem that the upper part of the existing transformer cannot form good heat dissipation.

[0005] The present application provides a transformer with improved heat dissipation design, which comprises a shell, a core and a heat dissipation assembly.

[0006] The heat dissipation assembly comprises a first heat dissipation part and a second heat dissipation part, the first heat dissipation part comprises a first heat dissipation area, the second heat dissipation part comprises a second heat dissipation area, and the first heat dissipation area is larger than the second heat dissipation area.

[0007] The outer side wall of the shell comprises an upper area and a lower area, the first heat dissipation part is arranged in the upper area, and most of the second heat dissipation parts are arranged in the lower area.

[0008] Optionally, the area of the upper area is equal to the area of the lower area.

[0009] Optionally, the shell is filled with heat dissipation insulating oil, the middle part of the heat dissipation assembly is hollow, and the middle part of the heat dissipation assembly is communicated with the inside of the shell.

[0010] Optionally, it further comprises a disturbance assembly, and the disturbance assembly comprises an upward flow guide plate.

[0011] The first heat dissipation part comprises an upper heat dissipation fin, the upper heat dissipation fin is arranged vertically in the upper area, the upward flow guide plate is arranged in the upper heat dissipation fin, and the upward flow guide plate is arranged in the upward direction away from the shell.

[0012] Optionally, the upward flow guide plate is provided with a first variable-speed disturbance part.

[0013] The first variable-speed disturbance part is used for disturbing the heat-dissipation insulation oil when the heat-dissipation insulation oil flows upwards along the upward flow guide plate.

[0014] Optionally, the disturbance assembly further comprises a downward flow guide plate, one end of the downward flow guide plate is connected to the other end of the upward flow guide plate away from the shell, and the other end is arranged to extend away from the shell and downward.

[0015] Optionally, the downward flow guide plate is provided with a second variable-speed disturbance part.

[0016] The second variable-speed disturbance part is used for disturbing the heat-dissipation insulation oil when the heat-dissipation insulation oil flows downwards along the downward flow guide plate.

[0017] Optionally, the first heat-dissipation area is 1.2-2 times of the second heat-dissipation area.

[0018] Optionally, at least one outer side wall of the shell is provided with the heat-dissipation assembly.

[0019] The technical scheme provided by the embodiment of the present application has the following beneficial technical effects:

[0020] The heat-dissipation parts with different heat-dissipation areas are arranged according to the heat distribution of different areas, so as to meet the requirement of flexible heat dissipation and ensure the heat dissipation effect; in addition, the setting mode of using the maximum heat-dissipation area is not used for all, so that the setting of the heat-dissipation parts on the transformer can be reduced, the weight of the transformer is reduced, and the cost is reduced.

[0021] Additional aspects and advantages of the present application will be described in part in the description which follows, and will become apparent from the description which follows, or will be learned by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 A structural schematic diagram of a transformer product with a heat-dissipation improved design provided by the embodiment of the present application;

[0024] Figure 2 A first cross-sectional view of the structure of the heat-dissipation assembly and the disturbance assembly; Figure 1

[0025] A second cross-sectional view of the structure of the heat-dissipation assembly and the disturbance assembly. Figure 3 Figure 1 A second cross-sectional view of the structure of the heat-dissipation assembly and the disturbance assembly.

[0026]

[0027] ​​10, housing; 20, heat dissipation assembly; 21, first heat dissipation part; 211, upper heat dissipation fin; 22, second heat dissipation part; 221, lower heat dissipation fin; 30, disturbance assembly; 31, upward flow guide plate; 311, first variable-speed disturbance part; 32, downward flow guide plate; 312, second variable-speed disturbance part; 40, collection box. DETAILED DESCRIPTION

[0028] The present application will be described in detail below, examples of embodiments of the present application are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar components or components having the same or similar functions throughout. In addition, if a detailed description of known technology is unnecessary for the features of the present application shown, it is omitted. The embodiments described below by reference to the accompanying drawings are exemplary and are for the purpose of explaining the present application only and cannot be interpreted as a limitation of the present application.

[0029] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have meanings consistent with those in the context of the prior art and should not be interpreted in an idealized or overly formal sense unless specifically defined as such herein.

[0030] Those skilled in the art can understand that, unless otherwise stated, the singular forms "a", "an" and "the" used herein also include the plural forms. It should be further understood that the use of the phrase "comprising" in the specification of the present application means that the stated features, integers, steps, operations, elements, and / or components are present, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there can be intermediate elements. In addition, "connected" or "coupled" used herein can include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any single unit and all combinations of the associated listed items.

[0031] The present application provides a heat dissipation improved design transformer, which aims to solve the above technical problems of the prior art.

[0032] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific examples.

[0033] The present application provides a heat dissipation improved design transformer, the structural schematic diagram of the product is shown as Figure 1 ​

[0034] The shell 10, the core and the heat dissipation assembly 20; the heat dissipation assembly 20 includes a first heat dissipation part 21 and a second heat dissipation part 22, the first heat dissipation part 21 includes a first heat dissipation area, the second heat dissipation part 22 includes a second heat dissipation area, the first heat dissipation area is larger than the second heat dissipation area;

[0035] The outer side wall of the shell 10 includes an upper area and a lower area, the first heat dissipation part 21 is arranged in the upper area, and most of the second heat dissipation parts 22 are arranged in the lower area.

[0036] The shell 10 includes a lower shell and an upper cover. The core is arranged in the lower shell, and the upper cover covers the lower shell. The core is connected to the outside through the upper cover. This is the prior art and will not be repeated. In addition, the lower shell of the embodiment is preferably a rectangular structure.

[0037] The key point is that, regardless of the dry-type transformer or the oil-immersed transformer, according to the basic theory of heat rising, there will be a problem of heat accumulation in the upper part of the shell 10. Therefore, the first heat dissipation part 21 and the second heat dissipation part 22 with different heat dissipation areas are arranged on the outer side wall of the shell 10. The first heat dissipation part 21 includes a first heat dissipation area with a larger area. In this way, the first heat dissipation area will more efficiently dissipate the heat accumulated in the upper part of the shell 10. In addition, the heat dissipation areas of the first heat dissipation part 21 and the second heat dissipation part 22 are designed to be different. First, they are adaptively designed according to the total amount of heat at different positions of the shell 10. Second, the lower part with a smaller total amount of heat is designed to have a second heat dissipation part 22 with a smaller heat dissipation area, which is conducive to reducing the number of components at this position and reducing the corresponding weight. The lightweight of the transformer is realized.

[0038] Optionally, the area of the upper area is equal to the area of the lower area.

[0039] In the embodiment, the upper area and the lower area are the same. The specifications of the first heat dissipation part 21 and the second heat dissipation part 22 can be set to be consistent, which reduces the manufacturing difficulty and complexity of the components of the transformer. In addition, the design of different heat dissipation areas of the first heat dissipation part 21 and the second heat dissipation part 22 is realized by the number of each part being different.

[0040] Optionally, the shell 10 is filled with heat dissipation insulating oil, the middle part of the heat dissipation assembly 20 is hollow, and the middle part of the heat dissipation assembly 20 is communicated with the inside of the shell 10.

[0041] In the embodiment, the transformer is exemplified by an oil-immersed transformer. The oil-immersed transformer dissipates heat through liquid conduction by heat dissipation insulating oil. According to the aforementioned heat rising phenomenon, the heat dissipation insulating oil will rise after absorbing heat, and the heat dissipation insulating oil with a relatively lower temperature will sink in the lower part of the transformer, thereby forming an internal flow cycle.

[0042] The heat dissipation assembly 20 is in communication with the shell 10 so that the heat dissipation insulation oil enters the heat dissipation assembly 20, and the heat dissipation insulation oil in the heat dissipation assembly 20 directly penetrates through the side wall of the heat dissipation assembly 20 to dissipate heat outward. Compared with the solid heat dissipation assembly 20, the hollow design of the middle part of the heat dissipation assembly 20 increases the heat dissipation area of the heat dissipation insulation oil, and at the same time, shortens the transmission path of the heat dissipation insulation oil to each side wall of the heat dissipation assembly 20, and accelerates the heat dissipation speed.

[0043] As can be known from the above, the heat dissipation area corresponding to the first heat dissipation part 21 and the second heat dissipation part 22 of the heat dissipation assembly 20 refers to the sum of the outer wall areas of the first heat dissipation part 21 or the sum of the outer wall areas of the second heat dissipation part 22.

[0044] Optionally, the disturbance assembly 30 is further included, and the disturbance assembly 30 includes an upward flow guide plate 31; the first heat dissipation part 21 includes an upper heat dissipation fin 211, and the upper heat dissipation fin 211 is vertically arranged in the upper area, and the upward flow guide plate 31 is arranged in the upper heat dissipation fin 211 and is arranged in an upward inclined extension away from the shell 10.

[0045] For example, the upper heat dissipation fin 211 is arranged in the vertical direction, and the number of the upper heat dissipation fin 211 can be one or more. In the embodiment of multiple upper heat dissipation fins 211, the multiple upper heat dissipation fins 211 are arranged along the length direction of the upper area. At this time, the sum of the outer wall areas of each upper heat dissipation fin 211 forms the first heat dissipation area.

[0046] As can be known from the foregoing, the middle part of the upper heat dissipation fin 211 is hollow, the heat dissipation insulation oil is filled in the upper heat dissipation fin 211, the upper heat dissipation fin 211 increases the spreading area of the heat dissipation insulation oil, and the heat dissipation efficiency is enhanced.

[0047] It can be referred that the second heat dissipation part 22 also includes a lower heat dissipation fin 221, and the number of the lower heat dissipation fin 221 can be one or more. In the embodiment of multiple lower heat dissipation fins 221, the multiple lower heat dissipation fins 221 are arranged along the length direction of the lower area. At this time, the sum of the outer wall areas of each lower heat dissipation fin 221 forms the second heat dissipation area. Similarly, the heat dissipation insulation oil is also filled in the lower heat dissipation fin 221.

[0048] In addition, in the case that the area of the upper area and the lower area is equal, the specifications of the upper heat dissipation fin 211 and the lower heat dissipation fin 221 can be selected to be consistent, and under the premise of consistent specifications, the number of the upper heat dissipation fin 211 is greater than the number of the lower heat dissipation fin 221.

[0049] In addition, in the case that the area of the upper area and the lower area is equal, if the number of the upper heat dissipation fin 211 and the lower heat dissipation fin 221 is considered to be consistent, the thickness or the width (the size in the direction perpendicular to the side surface of the shell 10) of the upper heat dissipation fin 211 can be considered to be larger.

[0050] Alternatively, if the area of the upper region is greater than the area of the lower region, the height of the upper heat sink 211 is greater than the height of the lower heat sink 221 in the present embodiment, and the number of the upper heat sink 211 and the lower heat sink 221 can be equal or not equal. Other variable embodiments, which are not listed one by one here, can be designed according to actual needs.

[0051] In the above, if the number of the upper heat sink 211 and the lower heat sink 221 is consistent, the upper heat sink 211 and the lower heat sink 221 are one-to-one correspondence; if not consistent, a collection box 40 can be arranged between the two, and the collection box 40 is communicated with the top of all the upper heat sink 211 and the top of all the lower heat sink 221, and the heat dissipation insulation oil of the upper heat sink 211 can flow downward to the lower heat sink 221 through the collection box 40. In the present embodiment, the bottom of the lower heat sink 221 is inclined from top to bottom and from outside to inside to form an inward flow structure, so that the heat dissipation insulation oil cooled at the bottom of the lower heat sink 221 can be quickly guided back into the shell 10.

[0052] Alternatively, the upper heat sink 211 and the lower heat sink 221 can also not be communicated, and the bottom of the upper heat sink 211 and the bottom of the lower heat sink 221 in the present embodiment can be respectively provided with the above-mentioned inward flow structure.

[0053] It is to be noted that the heat rising movement of the heat dissipation insulation oil in the shell 10 also diffuses more into the upper heat sink 211, and the heat dissipation insulation oil in the upper heat sink 211 sinks after heat dissipation and finally returns to the shell 10. The two sides of the upward flow plate 31 in the present embodiment are connected to the two sides inside the upper heat sink 211.

[0054] Importantly, the heat dissipation insulation oil in the present embodiment enters the upper heat sink 211 under the action of the upward force and climbs along the upward flow plate 31, and finally falls at the highest point of the upward flow plate 31, so that the heat dissipation insulation oil forms a hydraulic jump phenomenon at the falling position, that is, the kinetic energy is converted into potential energy, thereby forming a disturbance and accelerating heat dissipation. Further, a plurality of upward flow plates 31 can be arranged in parallel in the height direction of an upper heat sink 211, and correspondingly, a plurality of hydraulic jumps are formed. Optionally, the upward flow plate 31 is provided with a first variable-speed disturbance part 311; the first variable-speed disturbance part 311 is used for disturbing the heat dissipation insulation oil when the heat dissipation insulation oil flows upward along the upward flow plate 31.

[0055] Optionally, the upward flow plate 31 is provided with a first variable-speed disturbance part 311; the first variable-speed disturbance part 311 is used for disturbing the heat dissipation insulation oil when the heat dissipation insulation oil flows upward along the upward flow plate 31.

[0056] For example, referring to Figure 2The first variable-speed disturbance part 311 is arranged as a disturbance protrusion. One or more disturbance protrusions can be arranged. In the embodiment of multiple disturbance protrusions, the multiple disturbance protrusions are arranged along the direction of the upward flow guide plate 31. Specifically, the single disturbance protrusion is arranged along the width direction of the upward flow guide plate 31. It can be understood that the heat dissipation insulation oil needs to pass over the disturbance protrusion when climbing along the upward flow guide plate 31, so as to form a turbulent flow and enhance the disturbance effect.

[0057] Alternatively, referring to Figure 3 The first variable-speed disturbance part 311 is arranged as a disturbance protrusion. One or more disturbance protrusions can be arranged. In the embodiment of multiple disturbance protrusions, the multiple disturbance protrusions are arranged along the direction of the upward flow guide plate 31. Specifically, the single disturbance protrusion is arranged along the width direction of the upward flow guide plate 31. It can be understood that the heat dissipation insulation oil needs to pass over the disturbance protrusion when climbing along the upward flow guide plate 31, so as to form a turbulent flow and enhance the disturbance effect.

[0058] Optionally, the disturbance assembly 30 further comprises a downward flow guide plate 32. One end of the downward flow guide plate 32 is connected to the end of the upward flow guide plate 31 away from the shell 10, and the other end is arranged to extend away from the shell 10 and downward.

[0059] In this embodiment, the downward flow guide plate 32 is arranged first to increase the speed of the heat dissipation insulation oil transmitting heat to the upward fin 211, and also to form a cutting disturbance to the heat dissipation insulation oil. Specifically, in combination with the foregoing, in order not to affect the hydraulic jump at the highest point of the upward flow guide plate 31, the angle between the downward flow guide plate 32 and the upward flow guide plate 31 in this embodiment is between 30° and 60°, and is preferably 45°.

[0060] It can be referred to that the upward flow guide plate 31 and the downward flow guide plate 32 described above can also be arranged in the lower fin 221, which will not be repeated here.

[0061] Optionally, the downward flow guide plate 32 is provided with a second variable-speed disturbance part 312; the second variable-speed disturbance part 312 is used for disturbing the heat dissipation insulation oil when flowing downward along the downward flow guide plate 32.

[0062] The second variable-speed disturbance part 312 of this embodiment can be arranged as a disturbance protrusion or a disturbance barrier according to the first variable-speed disturbance part 311 described above, which will not be repeated here.

[0063] It should be noted that the above is mainly described as the application of the disturbance assembly 30 in the oil-immersed transformer, if it is changed into a dry transformer, the upper heat sink 211, the lower heat sink 221 and the disturbance assembly 30 can also be set, and details are not repeated here. In addition, the upper heat sink 211 and the lower heat sink 221 are preferably rectangular sheet structures.

[0064] Optionally, the first heat dissipation area is 1.2-2 times the second heat dissipation area.

[0065] In this embodiment, the first heat dissipation area is preferably 1.5 times the second heat dissipation area. Other multiples can be set according to the actual total heat, and details are not repeated here.

[0066] Further, based on the foregoing design idea, a middle area can be provided between the upper area and the lower area. The heat dissipation assembly 20 further comprises a third heat dissipation part, and the third heat dissipation part comprises a third heat dissipation area. At this point, the first heat dissipation area, the second heat dissipation area and the third heat dissipation area decrease in turn, so as to meet the characteristic that the heat decreases in turn from the top to the bottom of the shell 10. For example, the area ratio of the above three can be 4:3:2, and details are not repeated here.

[0067] Optionally, at least one outer side wall of the shell 10 is provided with the heat dissipation assembly 20.

[0068] In this embodiment, specifically, the relatively large side of the lower shell is provided with the heat dissipation assembly 20, and the other two small sides can also be provided with the heat dissipation assembly 20, and details are not repeated here.

[0069] Those skilled in the art can understand that the steps, measures and schemes in various operations, methods and processes discussed in the present application can be alternated, changed, combined or deleted. Further, other steps, measures and schemes in various operations, methods and processes discussed in the present application can also be alternated, changed, rearranged, decomposed, combined or deleted. Further, the steps, measures and schemes in the prior art with various operations, methods and processes disclosed in the present application can also be alternated, changed, rearranged, decomposed, combined or deleted.

[0070] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0071] The terms "first", "second", etc. are used only for the purpose of description and do not connote or imply any relative importance or imply a specific number of features. Thus, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified or limited.

[0072] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0073] In the description of the present application, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0074] It should be understood that although each step in the flowchart of the accompanying drawings is shown in sequence according to the direction of the arrow, these steps are not necessarily executed in sequence according to the direction of the arrow. Unless otherwise explicitly stated herein, the execution of these steps is not strictly limited in sequence, and they can be executed in other orders. Moreover, at least part of the steps in the flowchart of the accompanying drawings can include a plurality of sub-steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence is not necessarily sequential, but can be alternately or alternately executed with at least part of other steps or sub-steps or stages of other steps.

[0075] The above only describes some embodiments of the present application, and it should be pointed out that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A transformer with improved heat dissipation design, characterized in that: It comprises a housing (10), an iron core and a heat dissipation component (20); The heat dissipation assembly (20) comprises a first heat dissipation portion (21) and a second heat dissipation portion (22), the first heat dissipation portion (21) comprises a first heat dissipation area, the second heat dissipation portion (22) comprises a second heat dissipation area, and the first heat dissipation area is larger than the second heat dissipation area; The outer side wall of the housing (10) comprises an upper area and a lower area, the first heat dissipation portion (21) is arranged in the upper area, and the majority of the second heat dissipation portions (22) are arranged in the lower area.

2. The transformer with improved heat dissipation design according to claim 1, characterized in that: The area of ​​the upper region is equal to the area of ​​the lower region.

3. The transformer with improved heat dissipation design according to claim 1 or 2, characterized in that: The interior of the shell (10) is filled with heat-dissipating insulating oil, the middle portion of the heat-dissipating component (20) is hollow, and the middle portion of the heat-dissipating component (20) is connected to the interior of the shell (10).

4. The transformer with improved heat dissipation design according to claim 3, characterized in that: Also included is a disturbance assembly (30), wherein the disturbance assembly (30) includes an upward deflector (31); The first heat dissipation portion (21) comprises an upper heat dissipation fin (211), the upper heat dissipation fin (211) being vertically arranged in the upper area, the upward guide plate (31) being arranged in the upper heat dissipation fin (211), and the upward guide plate (31) being arranged to extend upwardly and obliquely in a direction away from the housing (10).

5. The transformer with improved heat dissipation design according to claim 4, characterized in that: The upward guide plate (31) is provided with a first speed-changing disturbance portion (311); The first speed-changing disturbance portion (311) is used to disturb the heat-dissipating insulating oil when the heat-dissipating insulating oil flows upward along the upward guide plate (31).

6. The transformer with improved heat dissipation design according to claim 4, characterized in that: The disturbance assembly (30) further comprises a downward deflector (32), one end of which is connected to an end of the upward deflector (31) away from the housing (10), and the other end of which is extended downward in a direction away from the housing (10).

7. The transformer with improved heat dissipation design according to claim 6, characterized in that: A second speed-changing disturbance portion (312) is provided on the downward flow guide plate (32); The second speed-changing disturbance portion (312) is used to disturb the heat-dissipating insulating oil when the heat-dissipating insulating oil flows downward along the downward guide plate (32).

8. The transformer with improved heat dissipation design according to claim 1, characterized in that: The first heat dissipation area is 1.2-2 times the second heat dissipation area.

9. The transformer with improved heat dissipation design according to claim 1, characterized in that: The heat dissipation assembly (20) is provided on at least one outer side wall of the housing (10).

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