Air passage structure and transformer

Abstract

The utility model provides an air passage structure and a transformer. The air channel structure comprises a primary side air channel and a secondary side air channel, the secondary side air passage is arranged on the periphery of the primary side air passage and comprises a third opening and a fourth opening; the wind resistance adjusting piece is arranged at the first opening of the primary side air channel; and the one or more adjustable supports are connected with the wind resistance adjusting piece, and the adjustable supports are configured to be suitable for adjusting the distance between the wind resistance adjusting piece and the first opening. The distance between the wind resistance adjusting piece and the first opening can be adjusted through the adjustable support, the pressure loss of the primary side air channel is changed, then the air volume passing through the primary side air channel and the secondary side air channel is adjusted, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a gas duct structure and a transformer. Background Technology

[0002] High-voltage frequency converters play a central role in modern electric drive systems, and phase-shifting transformers, as key components, undertake the important tasks of voltage conversion and phase adjustment. Phase-shifting transformers generate a significant amount of heat during operation. If this heat is not dissipated effectively and promptly, it will lead to overheating, affecting the equipment's stability and lifespan.

[0003] Currently, phase-shifting transformers generally rely on forced convection devices for forced air cooling. Specifically, phase-shifting transformers typically have primary and secondary air ducts designed inside. These ducts guide airflow to remove the heat generated during operation. However, the structure of these ducts is pre-defined and immutable, meaning that the pressure loss within the ducts cannot be adjusted according to actual cooling requirements. This fixed nature limits the flexibility of the cooling system, resulting in insufficient cooling efficiency, especially in high-temperature environments. Insufficient cooling directly affects the stability and expected lifespan of the equipment.

[0004] The content of the background section is merely the technology known to the inventor and does not necessarily represent the prior art in this field. Utility Model Content

[0005] To address one or more deficiencies in the prior art, this utility model provides a transformer air duct structure, comprising:

[0006] The primary airway includes the first opening and the second opening;

[0007] The secondary side airway is located around the primary side airway and includes a third opening and a fourth opening;

[0008] A wind resistance adjustment component is located at the first opening of the original side air passage;

[0009] One or more adjustable supports are respectively connected to the wind resistance adjustment element, and the adjustable supports are configured to adjust the distance between the wind resistance adjustment element and the first opening.

[0010] According to one aspect of the present invention, the first opening is disposed at the lower end of the original side air passage, and the second opening is disposed at the upper end of the original side air passage.

[0011] The third opening is located at the lower end of the secondary side airway, and the fourth opening is located at the upper end of the secondary side airway.

[0012] According to one aspect of the present invention, the first opening is annular, and the wind resistance adjusting component is annular.

[0013] According to one aspect of the present invention, the wind resistance adjusting component is provided with a wind-guiding slope on the side facing the first opening.

[0014] According to one aspect of the present invention, the wind resistance adjusting component has a mounting groove on the side facing away from the first opening; the adjustable support includes:

[0015] Nuts are provided in the mounting slots;

[0016] A pressure block, connected to the wind resistance adjustment component, is configured to confine the nut within the mounting groove, and the pressure block is provided with a through hole;

[0017] An adjusting nut plate, wherein the adjusting nut plate is provided with threaded holes;

[0018] The support block is connected to the adjusting nut plate; and

[0019] The adjusting bolt passes through the through hole and the pressure block, and its two ends are respectively threaded to the adjusting nut plate and the nut.

[0020] According to one aspect of the present invention, the support block is provided with a groove, and a portion of the adjusting nut plate is located in the groove and screwed to the support block.

[0021] According to one aspect of the present invention, the head of the adjusting nut is provided with a handle.

[0022] According to one aspect of the present invention, the support block is the bottom pressure block of the transformer.

[0023] This utility model also provides a transformer, comprising:

[0024] The airway structure as described above;

[0025] The primary winding is disposed within the primary air passage; and

[0026] The secondary winding is located within the secondary air passage.

[0027] According to one aspect of this utility model, the transformer is a phase-shifting transformer.

[0028] Compared with the prior art, the embodiments of this utility model provide an air duct structure and a transformer. The distance between the wind resistance adjustment component and the first opening can be adjusted by the adjustable support, thereby changing the pressure loss of the primary air duct and adjusting the airflow through the primary and secondary air ducts to improve heat dissipation efficiency. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0030] Figure 1 A schematic diagram of a transformer according to an embodiment of the present invention is shown;

[0031] Figure 2 It shows Figure 1 Sectional view at point AA;

[0032] Figure 3 It shows Figure 2 Enlarged view of point B in the middle;

[0033] Figure 4 A schematic diagram of a wind resistance regulating component according to an embodiment of the present invention is shown;

[0034] Figure 5 A schematic diagram showing the connection between the adjustable nut plate and the support block according to an embodiment of the present invention is shown.

[0035] In the diagram: 100, Transformer; 110, Iron core; 120, Primary winding; 130, Secondary winding; 210, Primary air passage; 211, First opening; 212, Second opening; 220, Secondary air passage; 221, Third opening; 222, Fourth opening; 230, Wind resistance adjustment component; 231, Air guide slope; 232, Mounting slot; 240, Adjustable support; 241, Nut; 242, Pressure block; 2421, Through hole; 243, Adjustable pitch nut plate; 2431, Threaded hole; 244, Support block; 2441, Groove; 245, Adjustable pitch bolt. Detailed Implementation

[0036] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0037] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0041] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0042] Figure 1 A schematic diagram of a transformer 100 according to an embodiment of the present invention is shown. Figure 2 It shows Figure 1 Sectional view at point AA. Figure 3 It shows Figure 2 A magnified view of point B in the middle, shown below. Figures 1 to 3 Provide a detailed description.

[0043] like Figures 1 to 3 As shown, the transformer 100 includes an iron core 110, a primary winding 120, a secondary winding 130, and an air duct structure. The air duct structure includes a primary air duct 210, a secondary air duct 220, a wind resistance adjustment component 230, and an adjustable support 240. The iron core 110 is the main body of the magnetic circuit of the transformer 100, providing a closed path for magnetic flux. The primary air duct 210 is located around the iron core 110, and the primary winding 120 is located inside the primary air duct 210. The primary air duct 210 has a first opening 211 and a second opening 212, wherein the first opening 211 can serve as an air inlet, and correspondingly, the second opening 212 can serve as an air outlet. The secondary air duct 220 is located around the primary air duct 210, and the secondary winding 130 is located inside the secondary air duct 220. The secondary side air duct 220 has a third opening 221 and a fourth opening 222. The third opening 221 can serve as an air inlet and is adjacent to the first opening 211 of the primary side air duct 210. Correspondingly, the fourth opening 222 can serve as an air outlet and is adjacent to the second opening 212 of the primary side air duct 210. A drag adjustment component 230 is disposed at the first opening 211 of the primary side air duct 210. An adjustable support 240 is connected to the drag adjustment component 230 and configured to adjust the distance between the drag adjustment component 230 and the first opening 211. Preferably, the drag adjustment component 230 is made of insulating material to prevent arcing and short circuits.

[0044] In some embodiments, a forced convection device can be used to promote airflow. This forced convection device can be part of the transformer 100 or can be installed independently of the transformer 100. The forced convection device is connected to the second opening 212 of the primary air passage 210 and the fourth opening 222 of the secondary air passage 220, respectively. During operation, the forced convection device can force air to enter the primary air passage 210 through the first opening 211. The air flowing through the primary air passage 210 can carry away the heat generated by the primary winding 120, allowing the primary winding 120 to operate at a suitable temperature. Simultaneously, the forced convection device can also force air to enter the secondary air passage 220 through the third opening 221. The air flowing through the secondary air passage 220 can carry away the heat generated by the secondary winding 130, allowing the secondary winding 130 to operate at a suitable temperature. Furthermore, the distance between the wind resistance adjusting component 230 and the first opening 211 can be adjusted via the adjustable support 240, thereby changing the pressure loss of the primary air duct 210 and adjusting the airflow through the primary air duct 210 and the secondary air duct 220 to improve heat dissipation efficiency. Specifically, when the distance between the wind resistance adjusting component 230 and the first opening 211 decreases, the pressure loss of the primary air duct 210 increases, the airflow of the primary air duct 210 decreases, and the airflow of the secondary air duct 220 increases; when the distance between the wind resistance adjusting component 230 and the first opening 211 increases, the pressure loss of the primary air duct 210 decreases, the airflow of the primary air duct 210 increases, and the airflow of the secondary air duct 220 decreases.

[0045] According to one embodiment of the present invention, such as Figure 1 As shown, the first opening 211 is located at the lower end of the primary side air passage 210, and the second opening 212 is located at the upper end of the primary side air passage 210. Correspondingly, the third opening 221 is located at the lower end of the secondary side air passage 220, and the fourth opening 222 is located at the upper end of the secondary side air passage 220. This arrangement allows air to flow smoothly through the primary side air passage 210 and the secondary side air passage 220, thereby improving heat dissipation efficiency.

[0046] According to one embodiment of the present invention, such as Figures 1 to 3 As shown, both the first opening 211 and the second opening 212 are annular, which allows air to enter and leave the original side air passage 210 more continuously and evenly, which helps to increase the airflow of the original side air passage 210 and thus significantly improves the heat dissipation efficiency. Figure 4 A schematic diagram of a wind resistance regulating member 230 according to an embodiment of the present invention is shown, as follows: Figure 3 and Figure 4As shown, the wind resistance regulating component 230 can be configured as an annular component adapted to the first opening 211, so that the wind resistance regulating component 230 can accurately adjust the wind pressure loss of the primary side air passage 210 and optimize airflow. Optionally, the third opening 221 and the fourth opening 222 are also configured as annular, which allows air to enter and leave the secondary side air passage 220 more continuously and evenly, which is beneficial to increasing the airflow of the secondary side air passage 220 and thus significantly improving heat dissipation efficiency.

[0047] According to one embodiment of the present invention, such as Figure 3 As shown, a guide slope 231 can be provided on the side of the wind resistance regulating component 230 facing the first opening 211. The provision of the guide slope 231 allows the wind resistance regulating component 230 to more precisely adjust the wind pressure loss of the primary side air duct 210, which is beneficial for achieving precise adjustment of the air volume of the primary side air duct 210 and the secondary side air duct 220. In addition, the guide slope 231 can also allow air to smoothly enter the primary side air duct 210, which helps to reduce airflow turbulence and improve the stability of equipment operation.

[0048] According to one embodiment of the present invention, such as Figure 3 and Figure 4 As shown, on the side of the wind resistance regulating component 230 facing away from the first opening 211 ( Figure 3The adjustable support 240 (located on the lower side of the component) has one or more mounting slots 232, and can also be configured as one or more. The adjustable support 240 may include a nut 241, a pressure block 242, an adjusting nut plate 243, a support block 244, and an adjusting bolt 245. The nut 241 is disposed in the corresponding mounting slot 232. The pressure block 242 is disposed at the opening of the mounting slot 232 and is fixedly connected to the wind resistance adjusting component 230 to confine the nut 241 within the mounting slot 232, preventing the nut 241 from falling out of the mounting slot 232. Furthermore, to accommodate the adjusting bolt 245, the pressure block 242 is also provided with a through hole 2421 through which the adjusting bolt 245 can pass. The adjusting nut plate 243 is disposed below the wind resistance adjusting component 230, and the adjusting nut plate 243 is provided with a threaded hole 2431 adapted to the adjusting bolt 245. The support block 244 is connected to the adjusting nut plate 243 to support the adjusting nut plate 243 at a preset height. The adjusting bolt 245, in a bottom-to-top sequence, first passes through the threaded hole 2431 on the adjusting nut plate 243 and engages with it threadedly, then passes through the through hole 2421 on the pressure block 242, and finally achieves a threaded connection with the nut 241. This configuration allows the user to adjust the distance between the wind resistance adjuster 230 and the first opening 211 by turning the bolts, changing the pressure loss of the primary side air duct 210, thereby adjusting the airflow through the primary side air duct 210 and the secondary side air duct 220, improving heat dissipation efficiency. Optionally, the mounting groove 232 is a stepped groove, the nut 241 is located at the bottom of the mounting groove 232, and the pressure block 242 is embedded in the groove of the mounting groove 232 and connected to the wind resistance adjuster 230 with screws. Optionally, all components of the adjustable support 240 are made of insulating material to prevent arcing and short circuits. For example, the nut 241 can be a nylon nut, the adjusting bolt 245 can be a nylon bolt, and the screw connecting the pressure block 242 and the wind resistance adjusting component 230 can be a nylon countersunk screw. Optionally, the support block 244 is the bottom pressure block 242 of the transformer 100. The bottom pressure block 242 can be used to fix and support the windings (primary winding 120 / secondary winding 130) inside the transformer 100, while ensuring electrical insulation and mechanical stability. Optionally, a handle can be provided on the head of the adjusting bolt 245 to facilitate tightening the adjusting bolt 245.

[0049] Figure 5 A schematic diagram showing the connection between the adjusting nut plate 243 and the support block 244 according to an embodiment of the present invention is shown, as follows: Figure 5As shown, a groove 2441 can be provided on the upper side of the support block 244. A portion of the adjusting nut plate 243 is located within the groove 2441 and is screwed to the support block 244, while another portion of the adjusting nut plate 243 extends beyond the groove 2441 and is provided with the threaded hole 2431. This arrangement ensures the stability of the adjusting nut plate 243 and facilitates the installation and adjustment of the adjusting bolt 245, thereby enabling precise control of the position of the wind resistance adjusting component 230.

[0050] Compared with the prior art, the present invention provides a transformer 100 with an improved air duct structure, wherein the distance between the wind resistance adjustment component 230 and the first opening 211 can be adjusted by the adjustable support 240, thereby changing the pressure loss of the primary side air duct 210, and thus adjusting the air volume through the primary side air duct 210 and the secondary side air duct 220 to improve heat dissipation efficiency.

[0051] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An air passage structure of a transformer, characterized by comprising: The airway structure comprises: a primary airway comprising a first opening and a second opening; a secondary airway arranged at the periphery of the primary airway, comprising a third opening and a fourth opening; a wind resistance adjusting member arranged at the first opening of the primary airway; one or more adjustable supports respectively connected to the wind resistance adjusting member, the adjustable supports being configured to adjust the distance between the wind resistance adjusting member and the first opening.

2. An airway structure according to claim 1, characterised in that, The first opening is arranged at the lower end of the primary airway, and the second opening is arranged at the upper end of the primary airway. The third opening is arranged at the lower end of the secondary airway, and the fourth opening is arranged at the upper end of the secondary airway.

3. An airway structure according to claim 1, wherein, The first opening is annular, and the wind resistance adjusting member is an annular member.

4. An airway structure according to claim 1, wherein The side of the wind resistance adjusting member facing the first opening is provided with a wind guide slope.

5. The airway structure of claim 1, wherein, The side of the wind resistance adjusting member facing away from the first opening is provided with a mounting groove; the adjustable support comprises: a nut arranged in the mounting groove; a pressing block connected to the wind resistance adjusting member and configured to limit the nut in the mounting groove, the pressing block being provided with a through hole; a distance adjusting nut plate provided with a threaded hole; a support block connected to the distance adjusting nut plate; and a distance adjusting bolt passing through the through hole of the pressing block and being threadedly connected to the distance adjusting nut plate and the nut at both ends, respectively.

6. An airway arrangement according to claim 5, characterised in that, The support block is provided with a groove, and a part of the distance adjusting nut plate is located in the groove and is screw-connected to the support block.

7. An airway arrangement according to claim 5, characterised in that The head of the distance adjusting nut is provided with a handle.

8. An airway arrangement according to claim 5, characterised in that, The support block is a bottom pressing block of the transformer.

9. A transformer, characterized by The airway structure comprises: the airway structure of any one of claims 1-8; a primary winding arranged in the primary airway; and a secondary winding arranged in the secondary airway.

10. The transformer of claim 9, wherein, The transformer is a phase-shifting transformer.

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