CN115206645A

CN115206645A - Amorphous alloy three-dimensional wound core

Info

Publication number: CN115206645A
Application number: CN202210622960.6A
Authority: CN
Inventors: 宋辉; 孟杰; 李佩福; 李胜营
Original assignee: Tianjin Zhufeng Silicon Steel Co ltd; TBEA Intelligent Electric Co Ltd; TBEA Beijing Tianjin Hebei Intelligent Technology Co Ltd
Current assignee: Tianjin Zhufeng Silicon Steel Co ltd; TBEA Intelligent Electric Co Ltd; TBEA Beijing Tianjin Hebei Intelligent Technology Co Ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-10-18
Also published as: WO2023232081A1

Abstract

The application relates to an amorphous alloy three-dimensional wound core which comprises three single-frame cores, wherein each single-frame core comprises an inner support and a single-frame matrix, and the single-frame matrix is formed by winding an amorphous alloy belt on the inner support surface; the inner support comprises a first support frame and a second support frame, the circumferential outer wall of the first support frame is used for winding an amorphous alloy strip, the second support frame is embedded in the first support frame, the section thickness of the second support frame is larger than that of the first support frame, a plurality of layers of adhesive layers are coated outside the single-frame base body, the innermost layer of the adhesive layers is coated in a partitioning mode, and the hardness value in the plurality of layers of adhesive layers can be adjusted according to requirements. The second carriage can play the supporting role to first carriage among the above-mentioned scheme, is favorable to improving the overall structure intensity that single frame was unshakable in one's determination, and then guarantees the straightness accuracy of stem, improves the production quality of transformer, still establishes the glue film through the surface coating at single frame base member, improves single frame iron core and supports intensity, prevents that the piece of unshakable in one's determination from scattering, satisfies the demand of making an uproar of falling simultaneously.

Description

Amorphous alloy three-dimensional wound core

Technical Field

The application relates to the technical field of amorphous alloy iron cores, in particular to an amorphous alloy three-dimensional wound iron core.

Background

Power transformers are electrical devices widely used in various industries of national economy. At present, distribution transformers mainly comprise silicon steel transformers and amorphous alloy transformers, and compared with the amorphous alloy transformers, the amorphous alloy transformers have more remarkable energy-saving effect. The amorphous alloy transformer is a transformer manufactured by using an amorphous alloy iron core. The conventional amorphous alloy iron core mainly comprises a single-phase single-frame, a three-phase three-frame three-column, a three-phase four-frame five-column, a three-dimensional wound iron core and the like, wherein the three-dimensional wound iron core is the first choice of a transformer iron core due to more reasonable structure, more excellent performance and lower manufacturing cost.

The amorphous alloy three-dimensional wound core comprises three single frames with the same structure, and three core columns formed by splicing the three single frames are arranged in an equilateral triangle three-dimensional manner; after each single frame is formed by winding a plurality of amorphous strips with different sizes, annealing treatment is needed after winding so as to eliminate internal stress, recover magnetism and improve the performance of the iron core. Due to the fact that the rigidity of the amorphous strip is insufficient, the amorphous strip is easy to deform during winding, the amorphous strip is easy to deform during annealing treatment after winding, and the amorphous strip is easy to deform during assembly of three subsequent single frames, so that the structural strength of the formed amorphous alloy three-dimensional wound core is not high, and the performance of the core is affected.

The existing amorphous alloy three-dimensional rolled iron core has the following problems in the forming process of a single iron core frame: 1. the strength of the formed inner support is insufficient, so that the window width and the window height of a single iron core frame cannot be ensured; 2. after the inner support is formed, the long side of the rectangular iron core frame is easy to be concave due to insufficient strength, so that the straightness of an iron core column is poor.

Disclosure of Invention

Based on this, it is necessary to provide a three-dimensional amorphous alloy wound core, and the three-dimensional amorphous alloy wound core aims to solve the problems that the inner support is low in strength and easy to deform, the glue layer is low in support strength, and noise is large in the prior art.

The application provides an amorphous alloy three-dimensional wound core which comprises three single-frame cores, wherein the three single-frame cores are spliced in pairs, and every two adjacent single-frame cores are spliced to form a core column; each single-frame iron core comprises an inner support and a single-frame matrix, and the single-frame matrix is formed by winding an amorphous alloy strip on the inner support surface; the inner support comprises a first support frame and a second support frame, the circumferential outer wall of the first support frame is used for winding the amorphous alloy strip, the second support frame is embedded in the first support frame, and the section thickness of the second support frame is larger than that of the first support frame.

In the above scheme, through the inside embedding second carriage at first carriage, can play the supporting role to first carriage to support single frame base member, be favorable to further improving the overall structure intensity unshakable in one's determination, and, the section thickness of second carriage is greater than the section thickness of first carriage, can guarantee mechanical strength, is favorable to preventing that the holistic long limit indent condition of single frame unshakable in one's determination from taking place, and then guarantees the straightness accuracy of stem, improves the production quality of transformer.

The technical scheme of the application is further explained as follows:

in any embodiment, the second support frame is a separate structure.

In any embodiment, the exterior of the single frame substrate is coated with a mesh reinforcement, which coats the single frame substrate.

In any embodiment, the mesh reinforcement is externally coated with a cured glue layer.

In any embodiment, the surface of the second support frame facing away from the first support frame is an arc-shaped surface.

In any embodiment, the outside of single frame base member is scribbled and is equipped with double-deck glue film, double-deck glue film includes interior glue film and outer glue film, the hardness number of outer glue film is greater than the hardness number of interior glue film, outer glue film is compound glue film, outer glue film includes the colloid and adds and is in the inside flexible strip of colloid.

In any embodiment, the outside of single frame base member is scribbled and is equipped with multilayer glue film, multilayer glue film is according to by being close to single frame base member is to keeping away from the direction of single frame base member includes inlayer glue film, outer glue film, the number of piles of outer glue film is one deck or multilayer, inlayer glue film subregion is scribbled and is established the outside of single frame base member, and each district exist the clearance between the inlayer glue film, outer glue film coating the outside of single frame base member.

In any embodiment, the outer part of the single-frame base body is coated with a multi-layer adhesive layer, the multi-layer adhesive layer sequentially comprises a coating layer, a polyurea layer and a protective layer from the position close to the single-frame base body to the position far away from the single-frame base body, and the flexibility of the protective layer is higher than that of the polyurea layer.

In any embodiment, the coating has a hardness less than the hardness of the polyurea layer, a toughness greater than the toughness of the polyurea layer, and from 1 to 10 coating layers.

In any embodiment, a hollow area is formed by enclosing three single-frame iron cores; the surface of each single-frame iron core, facing the other single-frame iron core, is an assembling surface, a plurality of gaps are formed on the assembling surface, and each gap is communicated with the hollow area and the outside.

In the above-mentioned scheme, through the inside embedding second carriage at first carriage, in order to improve the structural strength that single frame is unshakable in one's determination, and establish the glue film through the surface coating at single frame base member, in order to cushion the effort between the single frame base member, play and fall the function of making an uproar, and through dividing into the glue film the multilayer, improve the support intensity of glue film, the multilayer glue film can also be according to demand adjustment hardness number, the demand of making an uproar falls in order to nimble adaptation by toughness value, and the mode of multilayer glue film coating at single frame base member can pass through the stress release demand of interval distribution with the different regions of adaptation single frame base member self.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a plan view of an amorphous alloy three-dimensional wound core according to an embodiment of the present application;

fig. 2 is a schematic structural view of the single frame core of fig. 1;

FIG. 3 is a schematic structural view of the inner support of FIG. 2;

FIG. 4 is a first schematic structural diagram of the second support frame in FIG. 2;

FIG. 5 is a second schematic structural view of the second support frame of FIG. 2;

FIG. 6 is a third schematic structural view of the second support frame of FIG. 2;

FIG. 7 is a fourth schematic structural view of the second support frame of FIG. 2;

FIG. 8 is a schematic view of the second support frame of FIG. 4;

FIG. 9 is a schematic view of the second support frame of FIG. 8 after installation;

FIG. 10 is another schematic view of the second support frame of FIG. 4;

FIG. 11 is a fifth schematic structural view of the second support frame of FIG. 2;

FIG. 12 is a schematic view of the mounting of the second support frame of FIG. 11;

FIG. 13 is a schematic view of the second support frame of FIG. 12 after installation;

FIG. 14 is a schematic structural view of a multilayer bond line according to one embodiment of the present application;

FIG. 15 is a schematic view of a multilayer bond line according to another embodiment of the present application;

fig. 16 is a schematic cross-sectional view of fig. 2.

Description of reference numerals:

100. an amorphous alloy three-dimensional wound core; 110. a single frame core; 111. assembling the noodles; 112. an inner support; 1121. a first support frame; 1122. a second support frame; 113. a single frame base; 1141. an innermost glue layer; 1142. an outer glue layer; 1143. a coating layer; 1144. a polyurea layer; (ii) a 1145. A protective layer; 120. a stem; 130. a glue layer; 140. a gap.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the embodiments disclosed below.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relation describing an associated object, and means that three kinds of relations may exist, for example, a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Preferred embodiments of the present application will be described below with reference to the accompanying drawings.

As shown in fig. 1, an amorphous alloy three-dimensional wound core 100 according to an embodiment of the present disclosure includes three single-frame cores 110. The three single-frame iron cores 110 are spliced two by two, and each two adjacent single-frame iron cores 110 are spliced to form the core column 120. In the embodiment shown in fig. 1, three single-frame iron cores 110 are spliced two by two, and after two adjacent single-frame iron cores 110 are spliced, a core column 120 with a circular or polygonal cross section is formed, the three core columns 120 are arranged in an equilateral triangle, and the core column 120 is used for winding a coil.

Referring to fig. 2, each single-frame core 110 includes an inner support 112 and a single-frame substrate 113, and the single-frame substrate 113 is formed by winding an amorphous alloy ribbon on the surface of the inner support 112. The inner support 112 is used to reduce the deformation probability of the amorphous alloy material strip during winding, and at the same time, is used as a support to improve the structural strength of the single frame base 113 formed by winding. In some embodiments, the single-frame core 110 further includes an outer hoop disposed outside the single-frame substrate 113 to bind and protect the amorphous alloy ribbon from scattering.

As shown in fig. 3, the inner support 112 includes a first support frame 1121 and a second support frame 1122, and a circumferential outer wall of the first support frame 1121 is used for winding an amorphous alloy ribbon to form a single frame base 113. The second supporting frame 1122 is embedded in the first supporting frame 1121, and the cross-sectional thickness of the second supporting frame 1122 is greater than that of the first supporting frame 1121.

Optionally, the cross-sectional thickness of the first support frame 1121 is 1.5mm to 2mm, and the end surface thickness of the second support frame 1122 is 2mm to 50mm. In one embodiment, the first support frame 1121 has a cross-sectional thickness of 2mm. The second support frame 1122 has a cross-sectional thickness of 10mm. At this time, the section thickness of the second support frame 1122 is greater than that of the first support frame 1121, the second support frame 1122 can strengthen the support strength of the first support frame 1121 during the forming process, the whole inner support 112 of the single-frame iron core 110 can be kept rectangular, the design requirements can be met when the window width and the window height are long, the mechanical strength is improved, the rectangular long side of the inner support 112 of the single-frame iron core 110 is effectively prevented from being recessed inwards, and the straightness of the iron core column 120 is further guaranteed. The present embodiment provides only a specific selection of the cross-sectional thickness of the first supporting frame 1121 and the second supporting frame 1122, but is not limited thereto.

It should be noted that the window width and the window height of the inner support 112 should be understood that when the amorphous alloy core support structure is formed into a rectangle, the window width is the shorter side of the rectangle, that is, the short side. The window height is the longer side of the rectangular structure, namely the long side.

Optionally, the width of the first supporting frame 1121 is 20mm to 200mm, and the width of the second supporting frame 1122 is 10mm to 200mm. Preferably, the width of the second support frame 1122 is smaller than that of the first support frame 1121, which is advantageous to make the cross section of the stem 120 more nearly circular for coil winding.

The first supporting frame 1121 may be made of iron or iron alloy, aluminum or aluminum alloy, titanium or titanium alloy, copper, silicon steel, or other metal materials.

The first support frame 1121 is initially formed in a ring-shaped configuration, and the second support frame 1122 is formed in a rectangular shape having four circular arcs. The first supporting frame 1121 is changed into a rectangular structure through an iron core winding mold so as to embed the second supporting frame 1122 into the first supporting frame 1121, and optionally, the circumference of the first supporting frame 1121 is 0.01mm to 100mm larger than that of the iron core winding mold so as to facilitate installation and demolding.

In the production process, firstly, the amorphous alloy ribbon is wound on the first support frame 1121, after the winding is completed, the second support frame 1122 is embedded in the first support frame 1121, the second support frame 1122 and the amorphous alloy ribbon are placed on a forming device to perform circle-to-square preforming, and the forming device expands the second support frame 1122 and the second support frame 1122 to a set shape.

In the above scheme, the second support frame 1122 is embedded in the first support frame 1121, so that the first support frame 1121 can be supported, the single-frame base 113 is supported, the overall structural strength of the single-frame core 110 is further improved, the section thickness of the second support frame 1122 is larger than that of the first support frame 1121, the mechanical strength can be ensured, the occurrence of the inward concave condition of the long edge of the single-frame core 110 is prevented, the straightness of the core column 120 is ensured, and the production quality of the transformer is improved.

Referring to fig. 4 to 13, according to some embodiments of the present disclosure, the second supporting frame 1122 may be a split structure, which may be a multi-segment split structure with two or more segments, and the combined external dimension of the multi-segment split structure is the same as the dimension of the second supporting frame 1122 to be formed. When the second support frame 1122 has a two-segment split structure, it can be segmented in a segmentation manner as shown in fig. 4 to 7. When the second supporting frame 1122 has a four-segment split structure, it can be segmented in the manner shown in fig. 11. The above drawings are only one embodiment and are not limited thereto.

The split structure of each section can be formed by splicing, welding or bending after cutting steel plates to form a single-section split structure, or can be made of iron or iron alloy, aluminum or aluminum alloy, copper or copper alloy, high-hardness polyester material or other materials meeting the strength requirement.

The split structure of each section can adopt a welding, riveting or joggling structure when being connected. The connecting end face of the welding type split structure is processed into a plane. The riveting or joggling split structure can be processed into a concave and convex matching mode on the connecting end surface of the split structure, or the connecting end surface of the split structure is processed into a special-shaped structure which is beneficial to riveting or joggling.

As shown in fig. 8 to 13, taking the two-stage second support frame 1122 and the four-stage second support frame 1122 as an example, when the second support frame 1122 with a split structure is used, the split structures may be sequentially overlapped, and then the overlapped split structures may be placed between the first support frame 1121 and the device mold, when the "round and square" operation is performed, as the mold is gradually expanded, the inner supports 112 are gradually changed from overlapping to abutting, at this time, the device is stopped, the abutting positions of the inner supports 112 are adjusted to be aligned, and then the split structures are abutted by welding, riveting, joggling or by using the inward stress of the first support frame 1121, so as to complete the installation of the second support frame 1122.

According to some embodiments of the present application, optionally, the single frame base 113 is coated with a mesh-shaped reinforcing member (not labeled in the figures), and the mesh-shaped reinforcing member coats the single frame base 113 to bind and protect the amorphous alloy ribbon on the single frame base 113, so as to improve the mechanical strength of the single frame core 110.

Preferably, the mesh reinforcement can be made of a flexible mesh by dipping or brushing, wherein the flexible mesh can be a mesh fiber tape or cloth tape or the like. Taking the example of the flexible mesh as the cloth tape, the cloth tape may be coated on the single-frame substrate 113 after being dipped in glue, or the cloth tape may be coated on the single-frame substrate 113 and then the surface of the cloth tape is brushed with glue, so that the glue is dipped in the cloth tape.

According to some embodiments of the present application, the mesh reinforcement is optionally coated with a curing glue layer for curing the shape of the mesh reinforcement, and thus curing the single frame substrate 113, and the external curing glue layer can protect the mesh reinforcement and the single frame substrate 113.

Preferably, the hardness of the glue used for curing the glue layer may be selected according to the strength of the external force or the internal stress of each component of the single frame substrate 113, and the glue layer may be formed by alternately arranging the glue with lower hardness and the glue with higher hardness. For example, a high-hardness adhesive is provided on the bottom surface of the single-frame base 113 to protect the single-frame base 113 when the single-frame core 110 is placed upright and subjected to a large force.

According to some embodiments of the present application, optionally, a surface of the second support frame 1122 facing away from the first support frame 1121 is an arc-shaped surface, which is beneficial to make a cross section of the stem 120 closer to a circle, so as to facilitate coil winding. Preferably, the cross-section of the second support frame 1122 is elliptical or semi-elliptical.

According to some embodiments of the present application, optionally, the outer portion of the single frame substrate 113 is coated with a double-layer adhesive layer, the double-layer adhesive layer includes an inner adhesive layer and an outer adhesive layer from being close to the single frame substrate 113 to being far from the single frame substrate 113, both the inner adhesive layer and the outer adhesive layer are formed by coating, the inner adhesive layer is coated on the surface of the single frame substrate 113, and the outer adhesive layer is coated after the inner adhesive layer is cured. The hardness value of the outer adhesive layer is greater than that of the inner adhesive layer, the inner adhesive layer covers the surface of the single-frame substrate 113, the single-frame substrate 113 is sealed and bonded, amorphous alloy fragments of the single-frame substrate 113 are prevented from flying out, and meanwhile the buffering and noise reduction effects are achieved. The outer adhesive layer covers the surface of the inner adhesive layer to form a hard case, which plays a role in supporting and protecting the single-frame iron core 110.

Wherein, the inner glue layer can be selected from silicone glass glue, epoxy glue and the like. The outer glue film is a composite glue film, and the outer glue film comprises glue and flexible strips added inside the glue. The colloid can adopt epoxy glue, polyurea glue and the like, and the interior of the colloid is filled with flexible strips. The flexibility of the outer glue layer is increased through the added flexible strips, and the hard layer is prevented from cracking.

Referring to fig. 14, according to some embodiments of the present disclosure, a plurality of glue layers are optionally coated on the outer portion of the single frame substrate 113, and the plurality of glue layers include an innermost glue layer 1141 and an outer glue layer 1142 from the position close to the single frame substrate 113 to the position far from the single frame substrate 113. The innermost layer 1141 can fix the single frame substrate 113 and reduce the operation noise of the single frame substrate 113. The number of the outer layer 1142 is one or more. In the embodiment shown in fig. 14, the outer glue layer 1142 is provided in 3 layers, and in other embodiments the outer glue layer 1142 may be provided in 1 to 10 layers.

As shown in fig. 14, the innermost glue layers 1141 are coated outside the single frame base 113 in different areas, and gaps exist between the innermost glue layers 1141 in different areas, so that the stress of the innermost glue layers 1141 on the single frame base 113 is reduced, the glue layer stress is released, the no-load loss of the single frame iron core 110 is reduced, and the noise reduction effect is improved. The outer layer glue layer 1142 coats the outside of the single frame matrix 113, so that the single frame iron core 110 is protected by the outer layer glue layer 1142, the strength is improved, the problem that amorphous alloy fragments are scattered from the single frame iron core 110 due to the fact that the brittleness of a strip material is increased after the amorphous alloy single frame iron core 110 is annealed is solved, and the quality of the amorphous alloy three-dimensional wound core 100 transformer manufactured by using the single frame iron core 110 is improved. The material of each coating can be flexible materials such as silicon boron glue, silica gel, polyurea material and the like, and the hardness is in the range of shoreA 20-D90.

Referring to fig. 15, according to some embodiments of the present disclosure, optionally, the exterior of the single frame substrate 113 is coated with a multi-layer adhesive layer, the multi-layer adhesive layer includes a coating layer 1143, a polyurea layer 1144 and a protective layer 1145 from a position close to the single frame substrate 113 to a position far away from the single frame substrate 113, and the protective layer 1145 has a higher flexibility than the polyurea layer 1144. The polyurea layer 1144 is made of polyurea material, and the polyurea material is characterized by high hardness and low flexibility, and can form a hard shell on the surface of the single-frame base body 113 to protect the single-frame base body 113, but also enables the polyurea layer 1144 to be worn in the stress relief process of the single-frame iron core 110 to influence the completeness of an adhesive layer, and further influences the noise of the single-frame iron core 110 and the control of amorphous alloy fragments. As some examples of implementations, the protective layer 1145 may be a silicon boron gel coating or a silicon gel coating. The protective layer 1145 with low hardness and high flexibility is added outside the polyurea layer 1144, so that the mechanical strength of the multi-layer adhesive layer on the surface of the single-frame iron core 110 is increased, the risk of damage of the polyurea layer 1144 in the stress relieving process of the single-frame iron core 110 is greatly reduced, and the quality of the amorphous alloy three-dimensional wound core 100 transformer manufactured by using the single-frame iron core 110 is further improved.

According to some embodiments of the present application, optionally, the hardness of the coating layer 1143 is less than the hardness of the polyurea layer 1144, the toughness of the coating layer 1143 is greater than the toughness of the polyurea layer 1144, and the coating layer 1143 coats the single frame substrate 113 by curing, so that the single frame substrate 113 can be fixed to prevent amorphous fragments from being generated on the single frame substrate 113, and the flexibility of the coating layer 1143 can be utilized to absorb noise generated during the operation of the single frame core 110. By controlling the hardness and toughness of the coating layer 1143, the noise reduction effect, chipping prevention effect, and cost of the single frame core 110 can be comprehensively balanced. As some specific examples, the coating layer 1143 may be a silicon boron gel coating or a silicon gel coating.

Preferably, the number of the coating layers 1143 is 1 to 10. In the embodiment shown in fig. 15, the number of cladding layers 1143 is two. By providing the cladding layers 1143 in multiple layers, the performance of each layer of cladding layer 1143 can be finely adjusted, so that the effect of reducing noise from the surface position of the single-frame iron core 110 can be achieved, and the overall performance of the cladding layer 1143 can be further improved, thereby improving the overall performance of the single-frame iron core 110 and even the amorphous alloy three-dimensional wound core 100.

As shown in fig. 1, three single-frame cores 110 are enclosed to form a hollow area, a surface of each single-frame core 110 facing another single-frame core 110 is an assembly surface 111, as shown in fig. 2, a plurality of gaps 140 are formed on the assembly surface, and the gaps 140 communicate the hollow area with the outside. The gap 140 communicates the space on the inner side and the space on the outer side of the single frame substrate 113, and before the amorphous alloy three-dimensional wound core 100 is used, the hollow area of the amorphous alloy three-dimensional wound core 100 needs to be vacuumized, and after the hollow area of the amorphous alloy three-dimensional wound core 100 is vacuumized, the difference between the inner pressure and the outer pressure is large, and the running noise of the amorphous alloy three-dimensional wound core 100 is large. By arranging the gap 140 to penetrate through the space on the inner side and the outer side of the single-frame base body 113, namely the inner space and the outer space of the amorphous alloy three-dimensional wound core 100, on one hand, the inner air pressure and the outer air pressure are balanced, so that the operation noise of the single-frame core 110 is reduced, on the other hand, after the transformer is assembled and oil is injected, oil is filled in the gap 140, and the gap 140 can play a role in reducing the no-load current of the single-frame core 110 during operation.

Referring to fig. 2 and 16, according to some embodiments of the present application, optionally, a surface of each of the single-frame iron cores 110 connected to another single-frame iron core 110 is a splicing surface 111, and the splicing surface 111 of the adjacent single-frame iron core 110 is provided with a glue layer 130 (not shown in fig. 1, see fig. 2). The adhesive layers 130 are applied in different regions, and gaps 140 are formed between the adhesive layers 130 in different regions. As shown in fig. 2, the gap 140 transversely penetrates the adhesive layer 130 in the present embodiment, and the gap 140 may obliquely penetrate the adhesive layer 130 in other embodiments. In the present embodiment, the number of the gaps 140 is two, and the two gaps 140 respectively transversely penetrate through the glue layer 130 to divide the glue layer 130 into three glue areas. In other embodiments, the number of the gaps 140 may be one or two or more.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not cause the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present application, and are intended to be covered by the claims and the specification of the present application. In particular, the features mentioned in the embodiments can be combined in any manner, as long as no structural conflict exists. This application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims

1. An amorphous alloy three-dimensional wound core comprises three single-frame cores, wherein the three single-frame cores are spliced in pairs, and every two adjacent single-frame cores are spliced to form a core column,

each single-frame iron core comprises an inner support and a single-frame base body, and the single-frame base body is formed by winding an amorphous alloy strip on the inner support surface; the inner support comprises a first support frame and a second support frame, the circumferential outer wall of the first support frame is used for winding the amorphous alloy strip, the second support frame is embedded in the first support frame, and the section thickness of the second support frame is larger than that of the first support frame.

2. The amorphous alloy three-dimensional wound core according to claim 1, wherein the second support frame is a split structure.

3. The stereoscopic amorphous alloy wound core according to claim 1, wherein an outer portion of the single frame base is coated with a mesh reinforcement.

4. The stereoscopic amorphous alloy wound core according to claim 3, wherein a cured adhesive layer is coated on an outer portion of the mesh reinforcement.

5. The amorphous alloy three-dimensional wound core according to claim 1, wherein a surface of the second support frame facing away from the first support frame is an arc-shaped surface.

6. The amorphous alloy three-dimensional wound core according to claim 1, wherein a double-layer adhesive layer is coated outside the single-frame substrate, the double-layer adhesive layer comprises an inner adhesive layer and an outer adhesive layer, a hardness value of the outer adhesive layer is greater than that of the inner adhesive layer, the outer adhesive layer is a composite adhesive layer, and the outer adhesive layer comprises a colloid and a flexible strip added inside the colloid.

7. The amorphous alloy three-dimensional wound core according to claim 1, wherein a plurality of layers of glue layers are coated outside the single-frame substrate, the plurality of layers of glue layers include an innermost glue layer and an outer glue layer in a direction from the position close to the single-frame substrate to the position far away from the single-frame substrate, the number of the outer glue layers is one or more, the innermost glue layer is coated outside the single-frame substrate in a partitioning manner, gaps exist among the innermost glue layers in each region, and the outer glue layer coats the outside of the single-frame substrate.

8. The amorphous alloy three-dimensional wound core according to claim 1, wherein a multi-layer adhesive layer is coated outside the single-frame substrate, the multi-layer adhesive layer sequentially comprises a coating layer, a polyurea layer and a protective layer in a direction from the position close to the single-frame substrate to the position far away from the single-frame substrate, and the flexibility of the protective layer is higher than that of the polyurea layer.

9. The amorphous alloy spatial wound core according to claim 8, wherein a hardness of the clad layer is less than a hardness of the polyurea layer, a toughness of the clad layer is greater than a toughness of the polyurea layer, and the number of the clad layers is 1 to 10.

10. The amorphous alloy three-dimensional wound core according to claim 1, wherein a hollow area is formed by surrounding three single-frame cores;

the surface of each single-frame iron core, facing the other single-frame iron core, is an assembling surface, a plurality of gaps are formed on the assembling surface, and each gap is communicated with the hollow area and the outside.