Cushion block structure of three-dimensional wound core transformer

Abstract

The utility model provides a cushion block structure of a three-dimensional wound core transformer, and relates to the technical field of transformers, the three-dimensional wound core transformer is provided with a three-dimensional wound core, the three-dimensional wound core comprises three core limbs arranged in a triangle shape, each core limb is wound with a coil, the cushion block structure comprises a triangular cushion block, an iron yoke cushion block and a laminated cushion block, the triangular cushion block is located in the center of the three-dimensional wound iron core, the iron yoke cushion block and the lamination cushion block are in lap joint with the two adjacent coils, and the iron yoke cushion block is located between the two adjacent iron core columns. The iron yoke cushion block comprises a first limiting part extending to the position below the triangular cushion block, a main body part located between the two iron core columns and a second limiting part extending to the position below the lamination cushion block. According to the cushion block structure of the three-dimensional wound core transformer, the cushion block assembling efficiency can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer technical field, especially a kind of cushion block structure of three-dimensional wound core transformer. BACKGROUND

[0002] Three-dimensional wound core transformer (Three-Dimensional Wound Core Transformer) is a kind of energy-saving transformer based on new core structure. Its core is made of three independent single-frame wound core (single phase) and is combined to form a closed three-dimensional structure, and the magnetic circuit is completely symmetrical. High-voltage winding and low-voltage winding are wound on the three columns of the core, respectively, and electromagnetic balance is realized by reasonable distribution. Cushion block is used to fix the core and support the winding, and its assembly directly affects the mechanical strength and electromagnetic performance of the transformer.

[0003] When assembling the cushion block of the conventional three-dimensional wound core transformer, first, the yoke cushion block is driven into the window of the core, then the triangular cushion block and the laminated cushion block are assembled, and finally the screw rod is tightened after being screwed on to dry the body. After drying, the yoke cushion block driven in the original window is loose due to the decrease in the axial height of the coil, and cannot play the role of compressing the coil. The lead and the laminated cushion block need to be removed, and the filling cushion block needs to be driven into the window again. Then the laminated cushion block is reassembled. Although the effect is good, the process is too much, which seriously affects the assembly efficiency.

[0004] Therefore, the present inventor designs a kind of cushion block structure of three-dimensional wound core transformer according to many years of production and design experience in this field and related fields, in order to solve the problems existing in the prior art. CONTENT OF UTILITY MODEL

[0005] The utility model aims at providing a kind of cushion block structure of three-dimensional wound core transformer, which can effectively improve the assembly efficiency of cushion block.

[0006] To achieve the above-mentioned purpose, the utility model provides a kind of cushion block structure of three-dimensional wound core transformer, wherein the three-dimensional wound core transformer has a three-dimensional wound core, the three-dimensional wound core includes three core columns arranged in a triangular shape, each core column is wound with a coil outside, the cushion block structure includes a triangular cushion block, a yoke cushion block and a laminated cushion block, the triangular cushion block is located at the center position of the three-dimensional wound core, the yoke cushion block and the laminated cushion block are both lapped on two adjacent coils, the yoke cushion block is located between two adjacent core columns, and the yoke cushion block includes a first limiting portion extending below the triangular cushion block, a main body portion located between two core columns, and a second limiting portion extending below the laminated cushion block.

[0007] The spacer structure of the three-dimensional wound core transformer as described above, wherein the main body part has two opposite sides, the two sides are respectively in abutment with the two core columns, and the sides are in arc shape and are in abutment with the outer wall of the core column.

[0008] The spacer structure of the three-dimensional wound core transformer as described above, wherein the spacer structure comprises three iron yoke spacers, and the first limiting parts of two adjacent iron yoke spacers are in abutment.

[0009] The spacer structure of the three-dimensional wound core transformer as described above, wherein the second limiting part is provided with a first connecting hole.

[0010] The spacer structure of the three-dimensional wound core transformer as described above, wherein the laminated spacer is provided with a second connecting hole matched with the first connecting hole.

[0011] The spacer structure of the three-dimensional wound core transformer as described above, wherein the outer edge of the second limiting part is coincident with the outer edge of the laminated spacer.

[0012] The spacer structure of the three-dimensional wound core transformer as described above, wherein the spacer structure comprises three laminated spacers, each laminated spacer is in abutment with two adjacent core columns, and the side of the laminated spacer in abutment with the core column is in arc shape and is in abutment with the outer wall of the core column.

[0013] The spacer structure of the three-dimensional wound core transformer as described above, wherein the spacer structure comprises one triangular spacer, and the triangular spacer is provided with a third connecting hole.

[0014] The spacer structure of the three-dimensional wound core transformer as described above, wherein the iron yoke spacer is provided with a plurality of oil grooves.

[0015] The spacer structure of the three-dimensional wound core transformer as described above, wherein the iron yoke spacer is an epoxy plate iron yoke spacer.

[0016] Compared with the prior art, the spacer structure of the three-dimensional wound core transformer has the following characteristics and advantages:

[0017] The spacer structure of the three-dimensional wound core transformer is used in the assembly of the body, the iron yoke spacer is first punched into the window of the three-dimensional wound core, then the first limiting part of the iron yoke spacer is pressed by the triangular spacer and is tightened, and the second limiting part is pressed by the laminated spacer and is tightened; after the three-dimensional wound core is dried, the axial height of the coil is reduced, and the iron yoke spacer and the laminated spacer only need to be tightened again to ensure the compression of the coil. As can be seen from the above assembly and drying process, the assembly of the spacer structure only needs two steps, and in particular, after the three-dimensional wound core is dried, the laminated spacer does not need to be disassembled, which greatly improves the assembly efficiency.

[0018] The spacer structure of the three-dimensional wound core transformer provided by the utility model, the first limiting part of the iron yoke spacer extends to the lower part of the triangular spacer and is compressed by the triangular spacer, the second limiting part of the iron yoke spacer extends to the lower part of the laminated spacer and is compressed by the laminated spacer, the compression area is increased, and the short circuit resistance of the three-dimensional wound core transformer is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings described herein are only for the purpose of explanation, and are not intended to limit the scope of the utility model disclosure in any way. In addition, the shape and scale of each component in the drawings are only illustrative, and are used to help understand the utility model, and are not specific limitations on the shape and scale of each component of the utility model. Those skilled in the art can select various possible shapes and scales according to specific circumstances to implement the utility model under the guidance of the utility model.

[0020] Fig. 1 The installation schematic diagram of the spacer structure provided by the utility model is shown in the figure;

[0021] Fig. 2 The top view of the iron yoke spacer in the utility model is shown in the figure;

[0022] Fig. 3 The side view of the iron yoke spacer in the utility model is shown in the figure.

[0023] EXPLANATION OF REFERENCE NUMERALS

[0024] 100, three-dimensional wound core; 110, core column;

[0025] 120, coil; 200, spacer structure;

[0026] 210, triangular spacer; 211, third connecting hole;

[0027] 220, iron yoke spacer; 221, first limiting part;

[0028] 222, main body part; 223, third limiting part;

[0029] 224, first connecting hole; 225, oil groove;

[0030] 230, laminated spacer; 231, second connecting hole. DETAILED DESCRIPTION

[0031] The details of the present utility model can be more clearly understood in conjunction with the description of the accompanying drawings and the specific embodiments of the present utility model. However, the specific embodiments of the present utility model described herein are only used for the purpose of explaining the present utility model, and cannot be understood as limiting the present utility model in any way. Under the guidance of the present utility model, any possible deformation based on the present utility model can be conceived by the skilled person, and these should be regarded as belonging to the scope of the present utility model.

[0032] As shown in Figs. 1 to 3 The present utility model provides a gasket structure 200 of a three-dimensional wound core transformer, the three-dimensional wound core transformer has a three-dimensional wound core 100, the three-dimensional wound core 100 includes three core columns 110 arranged in a triangular shape, each core column 110 is wound with a coil 120 outside, the gasket structure 200 includes a triangular gasket 210, an iron yoke gasket 220 and a laminated gasket 230, the triangular gasket 210 is located at the center position of the three-dimensional wound core 100, the iron yoke gasket 220 and the laminated gasket 230 are both overlapped on two adjacent coils 120, the iron yoke gasket 220 is located between two adjacent core columns 110, the iron yoke gasket 220 includes a first limiting portion 221 extending to below the triangular gasket 210, a main body portion 222 located between the two core columns 110, and a second limiting portion 223 extending to below the laminated gasket 230.

[0033] The gasket structure 200 of the three-dimensional wound core transformer provided by the present utility model, when assembling the body, first drive the iron yoke gasket 220 into the window of the three-dimensional wound core 100, then use the triangular gasket 210 to press the first limiting portion 221 of the iron yoke gasket 220 and tighten, use the laminated gasket 230 to press the second limiting portion 223 and tighten; when the three-dimensional wound core 100 is completed drying, the axial height of the coil 120 will be smaller, only need to re-tighten the iron yoke gasket 220 and the laminated gasket 230 to ensure the compression of the coil 120. From the above assembly and drying process, it can be seen that the assembly of the gasket structure 200 provided by the present utility model only needs two steps, especially after the three-dimensional wound core 100 is dried, the laminated gasket does not need to be disassembled, which greatly improves the assembly efficiency.

[0034] The gasket structure 200 of the three-dimensional wound core transformer provided by the present utility model, the first limiting portion 221 of the iron yoke gasket 220 extends to below the triangular gasket 210 and is pressed tightly by the triangular gasket 210, the second limiting portion 223 of the iron yoke gasket 220 extends to below the laminated gasket 230 and is pressed tightly by the laminated gasket 230, which increases the pressure bonding area and improves the short circuit resistance of the three-dimensional wound core transformer.

[0035] In an optional embodiment of the utility model, the main body part 222 has two oppositely arranged sides, the two sides respectively abut against two core columns 110, and the sides are arc-shaped and fit the outer wall of the core column 110. With the above structure, the main body part 222 of the yoke pad 220 directly abuts against the core column 110, and the side of the main body part 222 fits the outer wall of the core column 110, thereby improving the contact area and contact density between the yoke pad 220 and the core column 110, effectively enhancing the structural stability and mechanical strength of the yoke pad 220 and the core column 110, avoiding the influence of the coil 120 shrinkage on the yoke pad 220, and increasing the overall durability of the three-dimensional wound core 100.

[0036] In an optional embodiment of the utility model, the pad structure 200 includes three yoke pads 220, and the first limiting parts 221 of two adjacent yoke pads 220 abut against each other. The three yoke pads 220 abut against each other in pairs, further increasing the structural stability of the yoke pad 220.

[0037] In an optional embodiment of the utility model, the second limiting part 223 is provided with a first connecting hole 224 for mounting the yoke pad 220.

[0038] In an optional example of the embodiment, the laminated pad 230 is provided with a second connecting hole 231 matched with the first connecting hole 224. With the above structure, the first connecting hole 224 and the second connecting hole 231 are penetrated by a screw rod, and the second limiting part 223 and the laminated pad 230 are pressed together by the nuts at both ends of the screw rod.

[0039] In an optional embodiment of the utility model, the outer edge of the second limiting part 223 coincides with the outer edge of the laminated pad 230. With the above structure, the laminated pad 230 completely overlaps the second limiting part 223, further increasing the pressure bonding area between the laminated pad 230 and the second limiting part 223.

[0040] In an optional embodiment of the utility model, the pad structure 200 includes three laminated pads 230, each laminated pad 230 abuts against two adjacent core columns 110, and the side of the laminated pad 230 abutting against the core column 110 is arc-shaped and fits the outer wall of the core column 110. With the above structure, the main body part 222 of the yoke pad 220 directly abuts against the core column 110, and the side of the main body part 222 fits the outer wall of the core column 110, thereby improving the contact area and contact density between the yoke pad 220 and the core column 110, effectively enhancing the structural stability and mechanical strength of the yoke pad 220 and the core column 110, and increasing the overall durability of the three-dimensional wound core 100.

[0041] In an optional embodiment of the utility model, the cushion block structure 200 comprises a triangular cushion block 210, the triangular cushion block 210 is provided with a third connecting hole 211, so as to press the triangular cushion block 210 on the first limiting part 221 through the screw rod and nut assembly.

[0042] In an optional embodiment of the utility model, the iron yoke cushion block 220 is provided with a plurality of oil grooves 225, so as to heat dissipation of the coil 120. Since the first limiting part 221 of the iron yoke cushion block 220 extends to below the triangular cushion block 210, the second limiting part 223 extends to below the laminated cushion block 230, the coil 120 is actually in contact with the iron yoke cushion block 220, the triangular cushion block 210 and laminated cushion block 230 do not need to open the oil groove any more, further simplify the processing and assembly process of the triangular cushion block 210 and laminated cushion block 230.

[0043] In an optional embodiment of the utility model, the iron yoke cushion block 220 is an epoxy plate iron yoke cushion block, which effectively increases the mechanical strength of the iron yoke cushion block 220.

[0044] For the detailed explanation of each embodiment, the purpose is only to explain the utility model, so as to better understand the utility model, but these descriptions cannot be explained as the limitation of the utility model for any reason, especially, the various features described in different embodiments can be combined arbitrarily, so as to constitute other embodiments, except for the explicit opposite description, these features should be understood as being applicable to any one embodiment, and not limited to the described embodiment.

Claims

1. A spacer structure of a three-dimensional wound core transformer, characterized by, The three-dimensional wound core transformer has a three-dimensional wound core including three core columns arranged in a triangular shape, and each of the core columns is wound with a coil outside, and the spacer structure includes a triangular spacer, an iron yoke spacer and a laminated spacer, the triangular spacer is located at the center of the three-dimensional wound core, the iron yoke spacer and the laminated spacer are both overlapped on two adjacent coils, the iron yoke spacer is located between two adjacent core columns, and the iron yoke spacer includes a first limiting portion extending to below the triangular spacer, a main body portion between the two core columns, and a second limiting portion extending to below the laminated spacer.

2. The spacer structure of the three-dimensional wound core transformer according to claim 1, wherein The main body portion has two opposite sides, and the two sides are respectively in abutment with the two core columns, and the sides are in the form of a circular arc and are fitted with the outer wall of the core column.

3. The spacer structure of the three-dimensional wound core transformer according to claim 1, wherein The spacer structure includes three iron yoke spacers, and the first limiting portions of two adjacent iron yoke spacers are in abutment.

4. The spacer structure of the three-dimensional wound core transformer according to claim 1, wherein The second limiting portion is provided with a first connecting hole.

5. The spacer structure of the three-dimensional wound core transformer according to claim 4, wherein The laminated spacer is provided with a second connecting hole matched with the first connecting hole.

6. The spacer structure of the three-dimensional volume core transformer according to claim 1, wherein The outer edge of the second limiting portion coincides with the outer edge of the laminated spacer.

7. The spacer structure of the three-dimensional volume core transformer according to claim 1, wherein The spacer structure includes three laminated spacers, each of which is in abutment with two adjacent core columns, and the side of the laminated spacer in abutment with the core column is in the form of a circular arc and is fitted with the outer wall of the core column.

8. The spacer structure of the three-dimensional volume core transformer according to claim 1, wherein The spacer structure includes one triangular spacer, and the triangular spacer is provided with a third connecting hole.

9. The spacer structure of the three-dimensional volume core transformer according to claim 1, wherein The iron yoke spacer is provided with a plurality of oil grooves.

10. The spacer structure of the three-dimensional volume core transformer according to claim 1, wherein The iron yoke spacer is an epoxy plate iron yoke spacer.

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