Low-cost amorphous alloy oil-immersed transformer

Abstract

The utility model provides a kind of low-cost amorphous alloy oil-immersed transformer, comprising: oil tank, including main body and cover, cover is covered on main body, and the inside of oil tank is installation cavity, and installation cavity is loaded with insulating oil;Amorphous alloy core winding module, including module frame, and amorphous alloy core winding module is fixed in installation cavity inside by module frame;Module frame has lower fixed part located below, and main body is provided with the lower clamping portion protruding to installation cavity side on inside bottom surface, and lower clamping portion is formed with the lower clamping groove compatible with lower fixed part;Module frame is fixed in lower clamping groove by lower fixed part.The amorphous alloy oil-immersed transformer is improved to the structure of oil tank, and the limiting structure of amorphous alloy core winding module is integrally machined when oil tank is processed, and the fixing of amorphous alloy core winding module is realized by the cooperation of main body and cover, and the production cost of amorphous alloy oil-immersed transformer can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of power transformer equipment, specifically to a low-cost amorphous alloy oil-immersed transformer. Background Technology

[0002] Amorphous metal transformers are low-loss, high-efficiency power transformers. These transformers use an iron-based amorphous metal as their core. Because this material lacks a long-range ordered structure, it is easier to magnetize and demagnetize than conventional magnetic materials. Therefore, the iron loss (i.e., no-load loss) of amorphous metal transformers is 70-80% lower than that of traditional transformers using silicon steel cores. Due to the reduced losses, the demand for power generation decreases, and emissions of greenhouse gases such as carbon dioxide are correspondingly reduced, resulting in better environmental performance.

[0003] Figure 1 This is a three-dimensional structural diagram of an existing amorphous alloy core winding module. In existing designs, the oil tank is generally made by casting or bending and welding of sheet metal, and the inner side of the oil tank is a regular rectangular space. In order to fix the amorphous alloy core winding module inside the oil tank, in the existing technology, in addition to the core functional component 50, an upper support plate 51 and a lower support plate 52 are added. The interlocking of the upper support plate 51 and the lower support plate 52 forms an external mounting bracket. This external mounting bracket is mainly to facilitate the installation of the amorphous alloy core winding module into the oil tank. In actual construction, in addition to the cost of manufacturing this external mounting bracket, the assembly and installation of this external bracket also requires a certain amount of labor cost, which to some extent increases the manufacturing cost of the amorphous alloy oil-immersed transformer. Utility Model Content

[0004] This invention provides a low-cost amorphous alloy oil-immersed transformer. By improving the tank structure, the limiting structure of the amorphous alloy core winding module is integrally machined during the tank processing. The amorphous alloy core winding module is fixed by the cooperation of the main body and the cover. In practical implementation, this can reduce the production cost of the amorphous alloy oil-immersed transformer and improve product competitiveness.

[0005] This utility model provides a low-cost amorphous alloy oil-immersed transformer, comprising:

[0006] An oil tank includes a main body and a cover, the cover being fitted onto the main body, and the interior of the oil tank being an installation cavity filled with insulating oil.

[0007] An amorphous alloy core winding module includes a module frame, wherein the amorphous alloy core winding module is fixed inside the mounting cavity through the module frame;

[0008] The module frame has a lower fixing part located at the bottom, and the main body has a lower locking part protruding towards the mounting cavity on the inner bottom surface, and a lower locking groove adapted to the lower fixing part is formed in the lower locking part;

[0009] The module frame is fixed in the lower slot by the lower fixing part.

[0010] In an optional embodiment, the outer contour of the side of the lower fixing part is a rectangular structure;

[0011] The lower locking part includes four L-shaped protrusions, which correspond to the four corner structures of the rectangular structure.

[0012] The inner contours of the four L-shaped protrusions combine to form the lower locking groove.

[0013] In an optional embodiment, the module frame has an upper fixing portion located at the top;

[0014] The cover has an upper locking portion recessed towards the mounting cavity;

[0015] When the cover is placed on the main body, the upper fixing part of the module frame cooperates with the upper locking part to limit the movement, and the upper locking part restricts the degree of freedom of the upper fixing part in at least one direction.

[0016] In an optional embodiment, the outer contour of the side of the upper fixing part is a rectangular structure, and the rectangular structure has two opposing long side contours.

[0017] The upper locking part includes a first groove and a second groove, and the positions of the first groove and the second groove correspond to the contours of the two long sides, respectively.

[0018] The upper locking portion is limited by the first groove and the second groove.

[0019] In an optional embodiment, the fuel tank further includes a mounting bracket;

[0020] The mounting bracket is located below the main body and is connected and fixed to the main body.

[0021] In an optional embodiment, the main body has a bracket groove on its outer bottom surface that is adapted to the mounting bracket;

[0022] The mounting bracket is installed on the bracket slot.

[0023] In an optional embodiment, the bracket groove forms a bracket protrusion on the inner bottom surface of the main body;

[0024] The lower fixing part is provided with a matching groove corresponding to the protrusion of the bracket;

[0025] When the module frame is fixed in the lower slot by the lower fixing part, the mating slot and the bracket protrusion cooperate to limit the movement.

[0026] In an optional embodiment, the mounting bracket includes a first linear bracket and a second linear bracket;

[0027] The first linear bracket and the second linear bracket are arranged parallel to each other below the main body.

[0028] In an optional embodiment, the fuel tank further includes corrugated sheets disposed on the side of the main body.

[0029] In summary, this utility model embodiment provides a low-cost amorphous alloy oil-immersed transformer. By improving the structure of the oil tank, the oil tank can directly limit and fix the module frame, avoiding the need for additional support structures and the additional labor costs associated with installing support structures. This reduces the overall production cost of the amorphous alloy oil-immersed transformer and has good economic efficiency. The oil tank of this amorphous alloy oil-immersed transformer mainly improves the structural method of maintaining the posture of the module frame inside the oil tank. The added structure of the oil tank limits the module frame in multiple dimensions, which not only facilitates the installation of the amorphous alloy iron core winding module, but also ensures the posture stability of the amorphous alloy iron core winding module inside the oil tank, thus having good practicality. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of an existing amorphous alloy core winding module.

[0031] Figure 2 This is a three-dimensional structural diagram of an amorphous alloy oil-immersed transformer according to an embodiment of the present invention.

[0032] Figure 3 This is a three-dimensional structural schematic diagram of the amorphous alloy iron core winding module according to an embodiment of the present invention.

[0033] Figure 4 This is a first three-dimensional structural diagram of the main body of an embodiment of the present utility model.

[0034] Figure 5 This is a second schematic diagram of the three-dimensional structure of the main body of this utility model embodiment. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] Figure 2 This is a three-dimensional structural diagram of an amorphous alloy oil-immersed transformer according to an embodiment of the present invention.

[0037] Figure 3 This is a three-dimensional structural schematic diagram of the amorphous alloy iron core winding module according to an embodiment of the present invention.

[0038] Figure 4 This is a first three-dimensional structural diagram of the main body of an embodiment of the present utility model.

[0039] Figure 5 This is a second schematic diagram of the three-dimensional structure of the main body of this utility model embodiment.

[0040] Specifically, this utility model embodiment provides a low-cost amorphous alloy oil-immersed transformer. Basically, this low-cost amorphous alloy oil-immersed transformer includes:

[0041] The oil tank includes a main body 5 and a cover 40. The cover 40 covers the main body 5. The interior of the oil tank is an installation cavity, which is filled with insulating oil. In actual implementation, the cover 40 can be connected to the main body 5 by being fastened with a flange. Furthermore, based on heat dissipation requirements, the oil tank also includes a corrugated sheet 3, which is disposed on the side of the main body 5.

[0042] The amorphous alloy core winding module is entirely housed within the oil tank and includes a module frame 10 and functional components. The functional components include the amorphous alloy core and windings 13. Specifically, since the amorphous alloy core is formed by rolling amorphous alloy strip, the module frame 10 is needed to maintain its shape during processing. Based on this, the windings 13 are wound accordingly, with some parts enclosed within the module frame 10 and others exposed outside, with corresponding high-voltage leads 14 and low-voltage leads 11 led out. The high-voltage leads 14 and low-voltage leads 11 can be shaped according to actual implementation requirements. Figure 3In actual implementation, the high-voltage lead structure and low-voltage lead structure need to be adjusted according to the setting position of the high-voltage sleeve, low-voltage sleeve and other structures on the cover. In addition, according to the actual circuit connection implementation requirements, relevant electrical connection structural components can be added according to the actual situation to achieve the functions of equipotentiality, series and parallel connection of the circuit.

[0043] In this embodiment of the utility model, the module frame 10 has a lower fixing part 30 located below, and the main body 5 has a lower locking part protruding toward the mounting cavity on the inner bottom surface, and a lower locking groove adapted to the lower fixing part 30 is formed in the lower locking part.

[0044] The module frame 10 is fixed in the lower slot by the lower fixing part 30.

[0045] In actual installation, the main body 5 is fixed on a horizontal mounting platform. The amorphous alloy core winding module is installed from the outside of the main body 5 into the main body 5 by hoisting. The lower fixing part 30 of the module frame 10 can be completely limited (horizontally) by the lower locking groove. The amorphous alloy core winding module maintains the stability of its posture under its own weight. Then, after the cover 40 is installed on the main body 5, the cover 40 limits the module frame 10 in the vertical direction from above. Based on the bonding force between the main body 5 and the cover 40, the vertical limitation of the amorphous alloy core winding module is ensured. The assembly of the amorphous alloy oil-immersed transformer is basically completed.

[0046] Specifically, the main body 5 is generally processed by casting or sheet metal bending and welding. When the main body 5 is processed by casting, the mold needs to be modified according to the structure of the lower clamping part, and the required lower clamping part structure is obtained in one casting. When the main body 5 is processed by sheet metal, the required lower clamping part structure can be stamped out at the corresponding position on the raw material plate of the main body 5 by stamping. Through this processing method, the required lower clamping part structure can be obtained in the processing stage of the main body 5, avoiding material waste and manual intervention in the installation of the bracket, and reducing the overall manufacturing cost of the amorphous alloy oil-immersed transformer.

[0047] It should be noted that, through the analysis of Figure 1 and Figure 3Regarding the structural comparison of amorphous alloy core winding modules, existing amorphous alloy core winding modules integrate a series of electrical connectors onto an external bracket. In the amorphous alloy core winding module of this invention, since the external bracket structure is removed, the electrical connectors are mainly integrated onto the cover 40. Because the main improvement of the amorphous alloy oil-immersed transformer in this invention is in the installation method of the amorphous alloy core winding module and the internal structure of the oil tank, the specific implementation of the electrical connection structure can be carried out according to existing technology. In actual implementation, since the amorphous alloy core winding module of this invention does not require further internal processing after installation, the cover and the amorphous alloy core winding module can be assembled first, then installed as a whole into the oil tank, and finally the assembly is completed by fixing the cover to the main body.

[0048] Specifically, according to actual implementation needs, in this embodiment of the utility model, the outer contour of the side of the lower fixing part 30 is a rectangular structure;

[0049] The lower locking part includes four L-shaped protrusions, which correspond to the four corner structures of the rectangular structure.

[0050] The inner contours of the four L-shaped protrusions combine to form the lower locking groove.

[0051] Furthermore, considering that the center of gravity of the amorphous alloy core winding module is relatively high, relying solely on the lower fixing part 30 to fix the module frame may pose a risk of unstable fixation. Therefore, in this embodiment of the utility model, the module frame 10 has an upper fixing part 31 located at the top.

[0052] The cover 40 has an upper locking portion recessed towards the mounting cavity;

[0053] When the cover 40 is placed on the main body 5, the upper fixing part 31 of the module frame 10 cooperates with the upper locking part to limit the position, and the upper locking part restricts the degree of freedom of the upper fixing part 31 in at least one direction.

[0054] Furthermore, considering the shape characteristics of the upper fixing part 31, the outer contour of the side of the upper fixing part 31 is a rectangular structure, and the rectangular structure has two opposing long side contours.

[0055] Correspondingly, the upper locking part includes a first groove 4 and a second groove 8, the positions of the first groove 4 and the second groove 8 respectively corresponding to the two long side contours;

[0056] The upper locking portion is limited by the first groove 4 and the second groove 8.

[0057] By setting the first groove 4 and the second groove 8, the overall sway of the amorphous alloy core winding module can be effectively prevented, thus improving the attitude stability of the amorphous alloy core winding module in the oil tank.

[0058] Furthermore, in order to prevent the bottom of the fuel tank from directly touching the ground (to avoid corrosion) and to facilitate external installation of the fuel tank, the fuel tank also includes a mounting bracket;

[0059] The mounting bracket is located below the main body 5 and is connected and fixed to the main body 5.

[0060] Furthermore, in order to facilitate the installation and positioning of the mounting bracket, the main body 5 has a bracket groove adapted to the mounting bracket on its outer bottom surface;

[0061] The mounting bracket is installed on the bracket slot.

[0062] Correspondingly, based on a similar processing principle to the lower locking part, the bracket groove forms a bracket protrusion on the inner bottom surface of the main body 5;

[0063] The lower fixing part 30 is provided with a matching groove 9 corresponding to the protrusion of the bracket;

[0064] When the module frame 10 is fixed in the lower slot by the lower fixing part 30, the mating slot and the bracket protrusion cooperate to limit each other.

[0065] This implementation method simplifies the installation and positioning of the mounting bracket, while also utilizing the bracket protrusion structure formed by sheet metal or casting to further limit the position of the module frame 10, ensuring the attitude stability of the amorphous alloy iron core winding module inside the oil tank.

[0066] According to conventional setup requirements, the mounting bracket includes a first linear bracket 1 and a second linear bracket 2;

[0067] The first linear bracket 1 and the second linear bracket 2 are arranged parallel to each other below the main body 5.

[0068] Accordingly, the bracket groove includes a first bracket groove 16 and a second bracket groove 17, the bracket protrusion formed by the first bracket groove 16 is a first bracket protrusion 18, and the bracket protrusion formed by the second bracket groove 17 is a second bracket protrusion 19.

[0069] In summary, this utility model embodiment provides a low-cost amorphous alloy oil-immersed transformer. By improving the structure of the oil tank, the oil tank can directly limit and fix the module frame, avoiding the need for additional support structures and the additional labor costs associated with installing support structures. This reduces the overall production cost of the amorphous alloy oil-immersed transformer and has good economic efficiency. The oil tank of this amorphous alloy oil-immersed transformer mainly improves the structural method of maintaining the posture of the amorphous alloy iron core winding module inside the oil tank. The added structure of the oil tank limits the module frame in multiple dimensions, which not only facilitates the installation of the amorphous alloy iron core winding module, but also ensures the posture stability of the amorphous alloy iron core winding module inside the oil tank, thus having good practicality.

[0070] The above provides a detailed description of a low-cost amorphous alloy oil-immersed transformer according to the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A low-cost amorphous alloy oil-immersed transformer, comprising: An oil tank includes a main body and a cover, the cover being fitted onto the main body, and the interior of the oil tank being an installation cavity filled with insulating oil. An amorphous alloy core winding module includes a module frame, wherein the amorphous alloy core winding module is fixed inside the mounting cavity through the module frame. The module frame is characterized in that it has a lower fixing part located below, and the main body has a lower locking part protruding towards the mounting cavity on the inner bottom surface, and a lower locking groove adapted to the lower fixing part is formed in the lower locking part; The module frame is fixed in the lower slot by the lower fixing part.

2. The low-cost amorphous alloy oil-immersed transformer as described in claim 1, characterized in that, The outer contour of the lower fixing part is a rectangular structure. The lower locking part includes four L-shaped protrusions, which correspond to the four corner structures of the rectangular structure. The inner contours of the four L-shaped protrusions combine to form the lower locking groove.

3. The low-cost amorphous alloy oil-immersed transformer as described in claim 1, characterized in that, The module frame has an upper fixing part located at the top; The cover has an upper locking portion recessed towards the mounting cavity; When the cover is placed on the main body, the upper fixing part of the module frame cooperates with the upper locking part to limit the movement, and the upper locking part restricts the degree of freedom of the upper fixing part in at least one direction.

4. The low-cost amorphous alloy oil-immersed transformer as described in claim 3, characterized in that, The outer contour of the side of the upper fixing part is a rectangular structure, and the rectangular structure has two opposite long side contours. The upper locking part includes a first groove and a second groove, and the positions of the first groove and the second groove correspond to the contours of the two long sides, respectively. The upper locking portion is limited by the first groove and the second groove.

5. The low-cost amorphous alloy oil-immersed transformer as described in claim 1, characterized in that, The fuel tank also includes a mounting bracket; The mounting bracket is located below the main body and is connected and fixed to the main body.

6. The low-cost amorphous alloy oil-immersed transformer as described in claim 5, characterized in that, The main body has a bracket groove on its outer bottom surface that is adapted to the mounting bracket; The mounting bracket is installed on the bracket slot.

7. The low-cost amorphous alloy oil-immersed transformer as described in claim 6, characterized in that, The bracket groove forms a bracket protrusion on the inner bottom surface of the main body; The lower fixing part is provided with a matching groove corresponding to the protrusion of the bracket; When the module frame is fixed in the lower slot by the lower fixing part, the mating slot and the bracket protrusion cooperate to limit the movement.

8. The low-cost amorphous alloy oil-immersed transformer as described in claim 5, characterized in that, The mounting bracket includes a first linear bracket and a second linear bracket; The first linear bracket and the second linear bracket are arranged parallel to each other below the main body.

9. The low-cost amorphous alloy oil-immersed transformer as described in claim 1, characterized in that, The fuel tank also includes corrugated sheets disposed on the side of the main body.

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