Annealing mechanism for single core

Abstract

The utility model discloses a kind of annealing mechanisms for single iron core, it is related to transformer volume iron core technical field, wherein, the annealing mechanism for single iron core includes rack, anti-toppling device and iron core copper bar, rack includes support and suspension bracket connected with each other, anti-toppling device includes anti-toppling inclined plane and anti-toppling guardrail, and iron core copper bar includes first copper bar and second copper bar.The technical scheme of the utility model realizes the positioning of first direction by using the abutment of suspension bracket and iron core window, cooperates with anti-toppling inclined plane and detachable anti-toppling guardrail to realize two-way limiting of single iron core in second direction, effectively prevent it from toppling or displacement in installation, handling and annealing procedure, improve structural stability and operating safety.Improve annealing temperature uniformity, avoid local annealing deficiency or overheating, so as to improve the consistency of iron core magnetic performance, reduce no-load loss, guarantee the annealing quality and process stability of large-capacity amorphous three-dimensional volume iron core.

Description

Technical Field

[0001] This utility model relates to the field of transformer core technology, and in particular to an annealing mechanism for a single core. Background Technology

[0002] In power transmission and distribution systems, power transformers are the core equipment for realizing the conversion, transmission, and distribution of electrical energy, and their operating efficiency directly affects the energy utilization level of the power grid. Amorphous alloy core transformers, as a type of high-efficiency and energy-saving distribution equipment, use amorphous alloy strip as the magnetic material to make the core. Compared with traditional silicon steel core transformers, their no-load loss can be reduced by about 75%, and the no-load current by about 80%, significantly improving the transformer's energy efficiency. They have become the most ideal energy-saving distribution transformer core currently available.

[0003] However, in the process of annealing the iron core using existing annealing equipment, the iron core is prone to tipping over or shifting, threatening equipment safety and the life and health of operators. Utility Model Content

[0004] The main purpose of this invention is to propose an annealing mechanism for a single iron core, aiming to solve the problem of how to improve the safety of the iron core during the annealing process.

[0005] To achieve the above objectives, this utility model proposes an annealing mechanism for a single iron core, which includes: The frame includes interconnected supports and suspension brackets, the suspension brackets being used to pass through the core window of a single iron core, and the suspension brackets being used to abut against the core window of the single iron core to restrict the movement of the single iron core relative to the suspension brackets in a first direction. An anti-tipping device includes an anti-tipping ramp and an anti-tipping guardrail. The anti-tipping ramp is connected to a support, and the anti-tipping guardrail is detachably connected to the support and / or the suspension frame. The anti-tipping ramp and the anti-tipping guardrail are spaced apart along a second direction. The anti-tipping ramp and the anti-tipping guardrail can respectively abut against the two sides of a single iron core that are opposite to each other along the second direction, so as to restrict the movement of the single iron core relative to the suspension frame along the second direction. The iron core copper busbar includes a first copper busbar and a second copper busbar, which are electrically connected. Both the first and second copper busbars extend along a second direction. The first copper busbar is used to pass through the iron core window of a single iron core, and the second copper busbar is located outside the single iron core. The first and second copper busbars are used to be electrically connected to the positive and negative poles of the annealing furnace, respectively. The first and second directions are perpendicular to each other.

[0006] In one embodiment, the suspension bracket includes a bracket body and a window-shaped pad. The bracket body is connected to a support frame, and the window-shaped pad extends along a third direction and is located at the top of the bracket body. The bracket body is used to pass through the core window of a single iron core, and the window-shaped pad is used to abut against the core window of the single iron core. The first direction, the second direction, and the third direction are perpendicular to each other.

[0007] In one embodiment, the extension length of the window contour pad along the third direction is defined as D1, and the width of the core window of a single iron core along the third direction is defined as D2. Then, (D2-2mm)≤D1<D2.

[0008] In one embodiment, the number of window contour pads is at least one, and the number of anti-tipping guardrails is the same as the number of window contour pads and they are set in a one-to-one correspondence.

[0009] In one embodiment, the anti-tipping guardrail includes a guardrail body, a first fastener, and a second fastener. The guardrail body is detachably connected to the suspension frame via the first fastener, and the guardrail body is detachably connected to the bracket via the second fastener.

[0010] In one embodiment, the first fastener includes a first bolt, the second fastener includes a second bolt, the guardrail body is provided with a first mounting hole and a second mounting hole, the suspension bracket is provided with a first threaded hole, the bracket is provided with a second threaded hole, the first bolt passes through the first mounting hole and is threadedly engaged with the first threaded hole, and the second bolt passes through the second mounting hole and is threadedly engaged with the second threaded hole.

[0011] In one embodiment, the support includes a bottom support frame and a vertical support frame. The bottom support frame and the suspension frame are spaced apart from the vertical support frame along a first direction. Both the bottom support frame and the vertical support frame are connected to an anti-tipping slope. The anti-tipping slope is used to abut against the lower slope of a single iron core. Both the bottom support frame and the suspension frame are detachably connected to the anti-tipping guardrail.

[0012] In one embodiment, the bracket further includes a first reinforcing member, and both the bottom support frame and the vertical support frame are connected to the first reinforcing member; And / or, The bracket also includes a second reinforcing member, and the vertical support frame is connected to the second reinforcing member.

[0013] In one embodiment, the first copper busbar includes a first connecting portion and a first conductive portion, and the second copper busbar includes a second connecting portion and a second conductive portion. The first conductive portion and the second conductive portion are electrically connected. Both the first conductive portion and the second conductive portion extend along a second direction. The first conductive portion is used to pass through the core window of a single iron core, and the second conductive portion is disposed outside the single iron core. The end of the first conductive portion away from the second conductive portion is electrically connected to the first connecting portion, and the end of the second conductive portion away from the first conductive portion is electrically connected to the second connecting portion. The first connecting portion and the second connecting portion are respectively used to be electrically connected to the positive and negative electrodes of the annealing furnace.

[0014] In one embodiment, the first connecting part and the second connecting part are respectively used for electrically detachable connection with the positive and negative electrodes of the annealing furnace.

[0015] In this embodiment of the invention, the annealing mechanism for a single iron core includes a frame, an anti-tipping device, and a copper busbar for the iron core. The frame consists of an interconnected support and a suspension frame. The suspension frame passes through the iron core window of the single iron core and abuts against the inner wall of the iron core window, thereby limiting the single iron core in a first direction and preventing it from slipping along the suspension frame. The anti-tipping device includes an anti-tipping ramp disposed on the support and an anti-tipping guardrail detachably connected to the support and / or the suspension frame. The two are arranged at intervals along a second direction and can abut against the opposite two sides of the single iron core in the second direction, forming a bidirectional constraint, limiting the tilting tendency of the single iron core in the second direction, and ensuring its stability in the suspended position.

[0016] It should be noted that the annealing mechanism for a single iron core is a specialized tooling designed specifically for the independent annealing of large-capacity amorphous three-dimensional wound iron cores at the single-core stage. Its application is for a single, independent iron core unit that has not yet been assembled (i.e., a single iron core), rather than the overall large-capacity amorphous three-dimensional wound iron core structure after multiple single iron cores have been assembled. Because the assembled overall iron core is bulky, inconvenient to operate, and poses operational safety risks, this utility model explicitly limits its application to the heat treatment process of a single iron core, aiming to provide a safe, stable, and operable support platform for such processes.

[0017] The iron core copper busbar includes a first copper busbar and a second copper busbar, which are electrically connected and both extend along a second direction. The first copper busbar passes through the center of the iron core window, and the second copper busbar is located on the outside of the iron core, forming a conductive path from the inside to the outside. The first and second copper busbars are electrically connected to the positive and negative terminals of the annealing furnace, respectively, providing an electrical interface for the energized heating during the annealing process. The first and second copper busbars are connected in series, and the copper busbar path passes through the iron core window of a single iron core and extends to the outside, finally connecting to the positive and negative output terminals of the annealing furnace, respectively. During the annealing heat treatment, a DC power supply is used to establish a stable magnetic field around the single iron core through this copper busbar circuit, realizing the magnetic annealing treatment of the amorphous alloy strip.

[0018] The suspension position of a single iron core can be vertical, i.e., its length direction is arranged along the first direction; or it can be horizontal, i.e., its width direction is arranged along the first direction, so that the single iron core is placed horizontally as a whole. This embodiment does not limit the specific placement posture of the single iron core, and can be flexibly selected according to the structure of the annealing furnace and process requirements.

[0019] This annealing mechanism for single iron cores uses a suspension frame to position the core in the first direction. Combined with an anti-tipping ramp and a detachable anti-tipping guardrail, it effectively prevents the core from tipping or shifting during handling, installation, and annealing, improving operational safety and structural stability. Simultaneously, by setting a first copper busbar passing through the core window and a second copper busbar located externally, a conductive circuit for connecting to a power source is formed, facilitating current introduction during annealing and meeting the process requirements for single-core annealing of large-capacity amorphous three-dimensional wound iron cores. This invention is applicable to both large-capacity amorphous three-dimensional wound iron cores of 3150kVA, 5500kVA, 6300kVA, 8250kVA, and above, as well as small-capacity amorphous three-dimensional wound iron cores.

[0020] In actual operation, first remove the anti-tipping guardrail, place the single iron core on the hanging frame according to the placement position, and make its lower sloping side close to the anti-tipping sloping side to achieve positioning. After placement, install the anti-tipping guardrail to limit the second direction. Then, according to the copper busbar connection requirements, connect the first copper busbar and the second copper busbar to the positive and negative poles of the annealing furnace respectively to complete the annealing furnace connection.

[0021] Compared to existing technologies, large-capacity amorphous three-dimensional coiled iron cores assembled from multiple individual iron cores are prone to tipping or slipping during handling, installation, or annealing processes due to their high center of gravity and heavy weight, posing serious equipment damage and personal safety hazards. This invention achieves axial positioning through surface contact between the suspension frame and the iron core window, preventing individual iron cores from sliding along the first direction; and through a double-sided clamping structure formed by an anti-tipping ramp and a detachable anti-tipping guardrail in the second direction, it completely limits the tipping tendency of individual iron cores. This structural design significantly improves the stability and operational safety of individual iron cores throughout the annealing process, and is particularly suitable for industrial production environments involving high-altitude operations or multi-station parallel operations. Furthermore, due to the large overall diameter and increased core column thickness of large-capacity amorphous three-dimensional wound cores formed by assembling multiple individual cores, uneven annealing temperatures are prone to occur. This invention, by independently annealing each core, significantly shortens the heat conduction path and improves the internal and external temperature differences caused by the poor thermal conductivity of the amorphous ribbon and interlayer air gaps, thereby enhancing the uniformity of the annealing temperature field. This improvement not only enhances the consistency of the magnetic properties of individual cores and reduces no-load losses, but also further improves the controllability of the overall annealing process and product quality. The overall structure is simple and easy to assemble, contributing to improved controllability, efficiency, and operational safety of the annealing operation of large-capacity amorphous three-dimensional wound cores at the individual core stage.

[0022] This embodiment of the invention achieves positioning in the first direction by using a suspension bracket that abuts against the core window. Combined with an anti-tipping ramp and a detachable anti-tipping guardrail, it provides bidirectional positioning of a single core in the second direction, effectively preventing tipping or displacement during installation, handling, and annealing processes, thus improving structural stability and operational safety. A first copper busbar passes through the core window, and a second copper busbar is located externally and connected to the positive and negative terminals of the power supply, forming a power circuit for easy annealing heating. The overall structure is suitable for single-core annealing of large-capacity cores of 3150kVA and above. By independently heat-treating each core before assembly, the heat conduction path is significantly shortened, mitigating the internal and external temperature differences caused by the poor thermal conductivity of amorphous ribbon and interlayer air gaps. This improves the uniformity of annealing temperature, avoids localized insufficient or overheating during annealing, thereby enhancing the consistency of the core's magnetic properties, reducing no-load losses, and ensuring the annealing quality and process stability of large-capacity amorphous three-dimensional wound cores. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1This is a schematic diagram of an embodiment of the annealing mechanism for a single iron core according to this utility model; Figure 2 This is a schematic diagram of another perspective of an embodiment of the annealing mechanism for a single iron core according to this utility model; Figure 3 This is another schematic diagram of the annealing mechanism for a single iron core according to an embodiment of the present invention. Figure 4 This is another perspective structural schematic diagram of an embodiment of the annealing mechanism for a single iron core according to this utility model; Figure 5 This is a rear view of an embodiment of the annealing mechanism for a single iron core according to the present invention; Figure 6 This is a schematic diagram of the frame of an embodiment of the annealing mechanism for a single iron core according to the present invention; Figure 7 This is a schematic diagram of another perspective of the frame structure of an embodiment of the annealing mechanism for a single iron core according to this utility model.

[0025] Explanation of icon numbers: 100. Annealing mechanism for a single iron core; 1. Frame; 11. Bracket; 111. Bottom support frame; 112. Vertical support frame; 113. First reinforcing member; 114. Second reinforcing member; 12. Suspension frame; 121. Frame body; 122. Window contour pad; 2. Anti-tipping device; 21. Anti-tipping slope; 22. Anti-tipping guardrail; 221. Guardrail body; 2211. First mounting hole; 2212. Second mounting hole; 3. Iron core copper busbar; 31. First copper busbar; 311. First connecting part; 312. First conductive part; 32. Second copper busbar; 321. Second connecting part; 322. Second conductive part; 200. Single iron core; 210. Iron core window; 220. Lower sloping surface.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, and back), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] In power transmission and distribution systems, power transformers are the core equipment for realizing the conversion, transmission, and distribution of electrical energy, and their operating efficiency directly affects the energy utilization level of the power grid. Amorphous alloy core transformers, as a type of high-efficiency and energy-saving distribution equipment, use amorphous alloy strips as the magnetic material to make the core. Compared with traditional silicon steel core transformers, their no-load loss can be reduced by about 75%, and the no-load current by about 80%, significantly improving the transformer's energy efficiency and making it a currently ideal energy-saving distribution transformer solution. However, during the annealing process of existing annealing devices, the core is prone to tilting or displacement, threatening equipment safety and the life and health of operators.

[0031] In practice, existing annealing equipment lacks effective support and protection structures, which poses significant safety hazards to large-capacity amorphous three-dimensional coiled iron cores during the annealing process. In particular, during handling, installation, and heating, the cores are prone to tipping over or shifting, threatening equipment safety and the lives and health of operators.

[0032] After careful study, the applicant discovered that large-capacity amorphous three-dimensional wound iron cores are typically composed of multiple individual iron cores, resulting in a large overall size and thick cross-section. Existing annealing structures lack constraint mechanisms, and the operating environment for large-capacity amorphous three-dimensional wound iron cores during independent annealing is complex, involving multiple steps including handling, installation, and annealing. Errors in any of these steps could lead to the iron core tipping or slipping, increasing operational safety risks. Furthermore, due to the large overall diameter and increased thickness of the iron core columns after assembling multiple individual iron cores, heat must be conducted radially over a long distance from the outer ring to the center region. This causes a lag in heating in the central region, creating a significant temperature difference with the outer layers and easily leading to uneven annealing temperatures. This fails to meet the dual requirements of annealing uniformity and structural stability for large-capacity amorphous three-dimensional wound iron cores.

[0033] The main objective of this invention is to propose an annealing mechanism for a single iron core to address the issue of how to improve the safety of the iron core during the annealing process.

[0034] Please see Figure 1 , Figure 2 , Figure 6 and Figure 7 In one embodiment of this utility model, the annealing mechanism 100 for a single iron core includes a frame 1, an anti-tipping device 2, and an iron core copper busbar 3. The frame 1 includes a support 11 and a suspension frame 12 connected to each other. The suspension frame 12 is used to pass through the iron core window 210 of the single iron core 200 and to abut against the iron core window 210 of the single iron core 200 to restrict the movement of the single iron core relative to the suspension frame 12 in a first direction. The anti-tipping device 2 includes an anti-tipping ramp 21 and an anti-tipping guardrail 22. The anti-tipping ramp 21 is connected to the support 11, and the anti-tipping guardrail 22 is detachably connected to the support 11 and / or the suspension frame 12. The anti-tipping ramp 21 and anti-tipping guardrail 22 are spaced apart along the second direction and can respectively abut against the two sides of the single iron core that are arranged opposite to each other along the second direction to restrict the movement of the single iron core relative to the suspension frame 12 along the second direction; the iron core copper busbar 3 includes a first copper busbar 31 and a second copper busbar 32, which are electrically connected. Both the first copper busbar 31 and the second copper busbar 32 extend along the second direction. The first copper busbar 31 is used to pass through the iron core window 210 of the single iron core 200, and the second copper busbar 32 is arranged outside the single iron core. The first copper busbar 31 and the second copper busbar 32 are respectively used to be electrically connected to the positive and negative poles of the annealing furnace; the first direction and the second direction are arranged perpendicularly.

[0035] In the embodiments of this utility model, such as Figure 1As shown, the first direction is up and down, the second direction is front and back, and the third direction is left and right. The annealing mechanism 100 for a single iron core includes a frame 1, an anti-tipping device 2, and a copper busbar for the iron core 3. The frame 1 consists of a support 11 and a suspension frame 12 connected to each other. The suspension frame 12 passes through the iron core window 210 of the single iron core 200 and abuts against the inner wall of the iron core window 210, thereby limiting the single iron core 200 in the first direction and preventing it from sliding along the suspension frame 12. The anti-tipping device 2 includes an anti-tipping ramp 21 disposed on the support 11 and an anti-tipping guardrail 22 detachably connected to the support 11 and / or the suspension frame 12. These two are spaced apart along the second direction and can abut against the opposite two surfaces of the single iron core 200 in the second direction, forming a bidirectional constraint, limiting the tilting tendency of the single iron core 200 in the second direction, ensuring its stability in the suspended position, and thus improving the safety of the single iron core 200 during the annealing process.

[0036] It should be noted that the annealing mechanism 100 for a single iron core is a special tooling designed specifically for the independent annealing of large-capacity amorphous three-dimensional wound iron cores at the single-core stage. Its application is to a single, independent iron core unit (i.e., a single iron core 200) that has not yet been assembled, rather than the overall large-capacity amorphous three-dimensional wound iron core structure after multiple single iron cores 200 have been assembled. Because the assembled overall iron core is bulky, inconvenient to operate, and poses operational safety risks, this utility model explicitly limits its application to the heat treatment process of a single iron core, aiming to provide a safe, stable, and operable support platform for such processes.

[0037] The iron core copper busbar 3 includes a first copper busbar 31 and a second copper busbar 32, which are electrically connected and both extend along the second direction. The first copper busbar 31 passes through the center of the iron core window 210, and the second copper busbar 32 is located on the outer periphery of the iron core, forming a conductive path from the inside to the outside. The first copper busbar 31 and the second copper busbar 32 are electrically connected to the positive and negative poles of the annealing furnace, respectively, providing an electrical interface for the energized heating during the annealing process. The first copper busbar 31 and the second copper busbar 32 are connected in series. The copper busbar path passes through the iron core window 210 of the single iron core 200 in sequence and extends to the outside, finally connecting to the positive and negative output terminals of the annealing furnace, respectively. During the annealing heat treatment, a DC power supply is used to establish a stable magnetic field around the single iron core 200 through this copper busbar circuit, realizing the magnetic annealing treatment of the amorphous alloy strip.

[0038] The suspension position of a single iron core 200 can be vertical, i.e., its length direction is arranged along the first direction; or it can be horizontal, i.e., its width direction is arranged along the first direction, so that the single iron core 200 is placed horizontally as a whole. This embodiment does not limit the specific placement posture of the single iron core 200, and can be flexibly selected according to the structure of the annealing furnace and process requirements.

[0039] The annealing mechanism 100 for a single iron core uses a suspension frame 12 to position the single iron core 200 in the first direction. Combined with the anti-tipping ramp 21 and the detachable anti-tipping guardrail 22, it effectively prevents the single iron core 200 from tipping or shifting during handling, installation, and annealing, improving operational safety and structural stability. Simultaneously, by setting a first copper busbar 31 passing through the iron core window 210 and a second copper busbar 32 located externally, a conductive circuit for connecting to a power source is formed, facilitating current introduction during annealing and meeting the process requirements for single-core annealing of large-capacity amorphous three-dimensional wound iron cores. This invention is applicable to both large-capacity amorphous three-dimensional wound iron cores of 3150kVA, 5500kVA, 6300kVA, 8250kVA, and above, as well as small-capacity amorphous three-dimensional wound iron cores.

[0040] In actual operation, first remove the anti-tipping guardrail 22, place the single iron core 200 on the hanging frame 12 according to the placement position, so that its lower inclined surface 220 is close to the anti-tipping inclined surface 21 to achieve positioning. After placement, install the anti-tipping guardrail 22 to limit the movement in the second direction. Then, according to the copper busbar connection requirements, connect the first copper busbar 31 and the second copper busbar 32 to the positive and negative poles of the annealing furnace respectively to complete the annealing furnace connection.

[0041] Compared to existing technologies, the assembled large-capacity amorphous three-dimensional coiled iron core, composed of multiple individual iron cores 200, is prone to tipping or slipping during handling, installation, or annealing processes due to its high center of gravity and heavy weight, posing serious equipment damage and personal safety hazards. This invention achieves axial positioning through the surface contact between the suspension frame 12 and the iron core window 210, preventing individual iron cores 200 from sliding along the first direction; and through the anti-tipping slope 21 and the detachable anti-tipping guardrail 22 forming a bidirectional clamp in the second direction, completely limiting the tipping tendency of individual iron cores 200. This structural design significantly improves the stability and operational safety of individual iron cores 200 throughout the annealing process, and is particularly suitable for industrial production environments involving high-altitude operations or multi-station parallel operations. Furthermore, due to the large overall diameter and increased core column thickness of the large-capacity amorphous three-dimensional wound core formed by assembling multiple individual cores 200, uneven annealing temperatures are prone to occur. This invention, by independently annealing each core 200, significantly shortens the heat conduction path and improves the internal and external temperature differences caused by the poor thermal conductivity of the amorphous ribbon and interlayer air gaps, thereby enhancing the uniformity of the annealing temperature field. This improvement not only enhances the consistency of the magnetic properties of each core 200 and reduces no-load losses, but also further improves the controllability of the overall annealing process and product quality. The overall structure is simple and easy to assemble, contributing to improved controllability, efficiency, and operational safety of the annealing operation of large-capacity amorphous three-dimensional wound cores at the individual core stage.

[0042] The technical solution of this utility model achieves positioning in the first direction by using the suspension frame 12 to abut against the iron core window 210, and in conjunction with the anti-tipping slope 21 and the detachable anti-tipping guardrail 22, it achieves bidirectional limiting of a single iron core 200 in the second direction, effectively preventing it from tipping or shifting during installation, handling, and annealing processes, thus improving structural stability and operational safety. The first copper busbar 31 passes through the iron core window 210, and the second copper busbar 32 is located on the outside and connected to the positive and negative terminals of the power supply, forming a power circuit to facilitate annealing heating. The overall structure is suitable for single annealing of large-capacity iron cores of 3150kVA and above. By independently heat-treating each iron core 200 before assembly, the heat conduction path is significantly shortened, improving the internal and external temperature difference caused by the poor thermal conductivity of amorphous ribbon and interlayer air gaps, improving the uniformity of annealing temperature, avoiding local under-annealing or overheating, thereby improving the consistency of the iron core's magnetic properties, reducing no-load loss, and ensuring the annealing quality and process stability of large-capacity amorphous three-dimensional wound iron cores.

[0043] Please see Figure 1 , Figure 2 and Figure 5 In one embodiment, the suspension frame 12 includes a frame body 121 and a window-shaped pad 122. The frame body 121 is connected to the bracket 11. The window-shaped pad 122 extends along a third direction and is located at the top of the frame body 121. The frame body 121 passes through the core window 210 of the single iron core 200, and the window-shaped pad 122 abuts against the core window 210 of the single iron core 200. The first direction, the second direction, and the third direction are perpendicular to each other. Specifically, the frame body 121 passes through the core window 210 of the single iron core 200 to support and axially guide the single iron core 200. The shape of the window-shaped pad 122 matches the inner contour of the core window 210 and can fully abut against the inner wall of the core window 210 of the single iron core 200, thereby achieving stable positioning in the first direction and preventing the iron core from slipping along the suspension frame 12. The first, second, and third directions are perpendicular to each other, ensuring that all structural components are orthogonally arranged in space and that the force distribution is clear. This design improves positioning accuracy and support stability by matching the shape of the window-shaped pad 122 with the shape of the iron core window 210. At the same time, it works in conjunction with the anti-tipping slope 21 and the anti-tipping guardrail 22 to further enhance the anti-tipping ability of the iron core and ensure the reliability of the posture of a single iron core 200 during the annealing process.

[0044] Please see Figure 5In one embodiment, the extension length of the window contouring pad 122 along the third direction is defined as D1, and the width of the core window 210 of a single iron core 200 along the third direction is defined as D2. Therefore, (D2-2mm) ≤ D1 < D2. Specifically, this dimensional relationship ensures that the window contouring pad 122 and the core window 210 form an effective fit in the third direction: D1 is less than D2, avoiding interference or compression during assembly of the single iron core 200 due to the excessive length of the window contouring pad 122, ensuring that the single iron core 200 can be smoothly fitted and accurately positioned; simultaneously, D1 is not less than (D2-2mm), ensuring sufficient contact length between the window contouring pad 122 and the core window 210, thereby providing stable support and positioning, preventing displacement of the iron core in the third direction due to vibration or thermal deformation during annealing. This dimensional design achieves a balance between assembly convenience and structural stability, improving the overall reliability and process adaptability of the annealing frame.

[0045] Please see Figures 1 to 4 In one embodiment, the number of window-shaped pads 122 is at least one, and the number of anti-tipping guardrails 22 is the same as the number of window-shaped pads 122 and they are set one-to-one. Specifically, the number of window-shaped pads 122 is at least one, and the suspension frame 12 can be appropriately lengthened so that multiple window-shaped pads 122 are arranged at intervals along the second direction on the same suspension frame 12. This is used to simultaneously support two or more amorphous three-dimensional coiled iron cores 200, realizing the synchronous annealing treatment of multiple iron cores, greatly improving the space utilization and production efficiency of the annealing furnace, and meeting the needs of mass heat treatment of large-capacity products. Each single iron core 200 is equipped with an anti-tipping guardrail 22, so that each single iron core 200 forms a bidirectional limit on both sides opposite in the second direction, effectively preventing the single iron core 200 from tipping or shifting during vertical placement, handling and annealing, ensuring operational safety and process stability. The first copper busbar 31 passes through the core window 210 of all individual iron cores 200, and the second copper busbar 32 is located outside all individual iron cores 200. The two are electrically connected and respectively connected to the positive and negative terminals of the annealing furnace, forming an electrical circuit to provide a current path for induction heating, facilitating uniform annealing of all individual iron cores 200. The overall structure is rationally designed, with clear functions, strong scalability, and unlimited quantity. It ensures high-quality annealing of individual iron cores 200 while achieving efficient batch processing of multiple iron cores, demonstrating good industrial application prospects and promotional value.

[0046] Please see Figure 1In one embodiment, the anti-tipping guardrail 22 includes a guardrail body 221, a first fastener (not shown), and a second fastener (not shown). The guardrail body 221 is detachably connected to the suspension frame 12 via the first fastener, and the guardrail body 221 is detachably connected to the bracket 11 via the second fastener. Specifically, by setting a dual connection path, the guardrail body 221 is detachably fixed to both the suspension frame 12 and the bracket 11, enhancing the overall installation rigidity and connection stability of the anti-tipping guardrail 22 and effectively improving the constraint capability of a single iron core 200 along the second direction. During the overall heating or handling of the annealing frame, even if a single connection point shows a loosening tendency, the other connection point can still maintain its limiting function, ensuring the stability of the iron core's posture. At the same time, the detachable connection method facilitates flexible installation or disassembly of the guardrail according to actual working conditions, meeting the operational requirements for clamping and removing a single iron core 200, and improving work efficiency. The structure is reasonably designed and reliably connected, suitable for the single iron core 200 limit requirements in different layout positions, thus improving the adaptability and safety of the anti-tipping device 2.

[0047] Please see Figure 1 In one embodiment, the first fastener includes a first bolt (not shown), and the second fastener includes a second bolt (not shown). The guardrail body 221 has a first mounting hole 2211 and a second mounting hole 2212. The suspension bracket 12 has a first threaded hole (not shown), and the support 11 has a second threaded hole (not shown). The first bolt passes through the first mounting hole 2211 and is threaded into the first threaded hole, and the second bolt passes through the second mounting hole 2212 and is threaded into the second threaded hole. Specifically, by providing two mounting holes on the guardrail body 221, which respectively engage with the threaded holes on the suspension bracket 12 and the support 11, a bolted connection is used to achieve dual-point fixing of the anti-tipping guardrail 22. This method is simple in structure, reliable in connection, and effectively improves the stability and vibration resistance of the guardrail during use. The threaded connection facilitates disassembly and assembly, meeting the design requirement of the anti-tipping guardrail 22 being detachable, and is beneficial for the rapid installation and positioning of a single iron core 200. The threaded engagement of the first bolt with the suspension bracket 12 and the threaded engagement of the second bolt with the bracket 11 work together to form a stable limiting frame for the guardrail body 221, which can reliably abut against both radial sides of the iron core, preventing it from tipping over or shifting during the annealing process, and ensuring the safety and process stability of the large-capacity amorphous three-dimensional coiled iron core during the heat treatment process.

[0048] According to one embodiment of the present invention, the anti-tipping guardrail 22 and the hanging frame 12, and the anti-tipping guardrail 22 and the bracket 11 can all be detachably connected by means of snap-fit ​​connection, magnetic connection or pin connection.

[0049] Please see Figure 1 , Figure 4 , Figure 6 and Figure 7 In one embodiment, the bracket 11 includes a bottom support frame 111 and a vertical support frame 112. The bottom support frame 111 and the suspension frame 12 are spaced apart on the vertical support frame 112 along a first direction. Both the bottom support frame 111 and the vertical support frame 112 are connected to the anti-tipping slope 21. The anti-tipping slope 21 is used to abut against the lower slope 220 of a single iron core 200. Both the bottom support frame 111 and the suspension frame 12 are detachably connected to the anti-tipping guardrail 22. Specifically, by integrating the bottom support frame 111 and the suspension frame 12 through the vertical support frame 112, a stable spatial support structure is formed, realizing the positioning and segmented support of the single iron core 200 in the first direction. The anti-tipping ramp 21 is connected to the bottom support frame 111 and the vertical support frame 112. The anti-tipping ramp 21 is used to abut against the lower ramp 220 of a single iron core 200, providing a reliable axial limiting reference surface to prevent the single iron core 200 from tipping to one side. The bottom support frame 111 and the suspension frame 12 both serve as the connecting base of the anti-tipping guardrail 22, allowing the anti-tipping guardrail 22 to be detachably connected to the support frame 11 and the suspension frame 12 at multiple points, improving the overall connection rigidity and installation flexibility. This structure has a reasonable layout and clear force transmission, ensuring the posture stability of the single iron core 200 during the annealing process, and facilitating the operator to disassemble and assemble the guardrail to complete the placement and fixation of the single iron core 200, thus improving the operational convenience and reliability of the equipment.

[0050] Please see Figure 6 and Figure 7In one embodiment, the support 11 further includes a first reinforcing member 113, and both the bottom support frame 111 and the vertical support frame 112 are connected to the first reinforcing member 113; and / or, the support 11 further includes a second reinforcing member 114, and the vertical support frame 112 is connected to the second reinforcing member 114; specifically, in this embodiment, the first reinforcing member 113 is an oblique support structure, and the second reinforcing member 114 is a transverse support structure. The oblique support form of the first reinforcing member 113 forms a triangular stable configuration between the bottom support frame 111 and the vertical support frame 112, which effectively improves the overall structural strength and bending resistance of the support 11, prevents deformation or instability when bearing a single iron core 200 or under external force, and ensures the structural reliability of the annealing frame in long-term use; and the oblique support, as a connecting hub, optimizes the load transmission path and makes the support force distribution more uniform. The second reinforcing member 114, in the form of a lateral support, connects to different parts of the vertical support frame 112 along the third direction, enhancing its resistance to lateral deformation and effectively suppressing the bending or twisting of the vertical support frame 112 in the first direction. Especially when the suspension frame 12 is lengthened to achieve the parallel arrangement of multiple iron cores or under the influence of thermal stress, it can still maintain good rigidity and stability. The diagonal support and the lateral support work together to form a multi-directional reinforced stable structural system, which significantly improves the overall rigidity and deformation resistance of the support 11. At the same time, the structural layout is compact and reasonable, and does not affect the function of the anti-tipping slope 21, the suspension frame 12 and the anti-tipping guardrail 22, further improving the safety, stability and durability of the annealing frame under high-capacity and high-load conditions.

[0051] Please see Figure 1 and Figure 3In one embodiment, the first copper busbar 31 includes a first connecting portion 311 and a first conductive portion 312, and the second copper busbar 32 includes a second connecting portion 321 and a second conductive portion 322. The first conductive portion 312 and the second conductive portion 322 are electrically connected. Both the first conductive portion 312 and the second conductive portion 322 extend along a second direction. The first conductive portion 312 is used to pass through the core window 210 of the single iron core 200. The second conductive portion 322 is disposed on the outside of the single iron core. The end of the first conductive portion 312 away from the second conductive portion 322 is electrically connected to the first connecting portion 311. The end of the second conductive part 322 away from the first conductive part 312 is electrically connected to the second connecting part 321. The first connecting part 311 and the second connecting part 321 are used for electrical connection with the positive and negative poles of the annealing furnace, respectively. Specifically, by setting the first copper busbar 31 and the second copper busbar 32 as separate structures composed of conductive parts and connecting parts, functional division is achieved. The first conductive part 312 and the second conductive part 322 are responsible for forming the main current path through the iron core window 210 and the external arrangement, forming a conductive loop around the magnetic circuit of the iron core, providing a stable current path for induction heating during the annealing process. The first connecting part 311 and the second connecting part 321 are dedicated to docking with the power terminal of the annealing furnace, which facilitates standardized and detachable electrical connection, avoids stress or wear on the main conductive part, and improves connection reliability and maintenance convenience. The structure is rationally laid out with a clear conductive path, ensuring that the current flows from the first connecting part 311 through the first conductive part 312, through the electrical connection with the second conductive part 322, and then back to the power supply through the second connecting part 321, forming a closed loop. This generates an alternating magnetic field in the single iron core 200, achieving uniform heating. Simultaneously, this design facilitates the installation, disassembly, and replacement of the iron core copper busbar 3, making it suitable for efficient and stable annealing operations of large-capacity amorphous three-dimensional wound iron cores at the single-core stage.

[0052] Please see Figure 1In one embodiment, the first connecting part 311 and the second connecting part 321 are respectively used for detachable electrical connection with the positive and negative electrodes of the annealing furnace. Specifically, by setting a detachable connection method, it is convenient to quickly install and remove the first copper busbar 31 and the second copper busbar 32 from the power supply terminals of the annealing furnace, significantly improving the assembly efficiency and operational convenience of the annealing operation. After the annealing of a single iron core 200 is completed, the electrical connection can be easily disconnected, realizing the overall removal of the annealing rack or replacement of the next batch of workpieces, which is suitable for mass production scenarios. At the same time, the detachable connection structure is conducive to the independent maintenance, replacement or inspection of the iron core copper busbar 3, avoiding the overall scrapping due to local damage and reducing the cost of use. This connection method can also ensure the contact reliability of each connection, reduce contact resistance, ensure the current stability during the power-on process, improve the consistency and safety of the annealing process, and is particularly suitable for the high reliability electrical connection requirements of large-capacity amorphous three-dimensional wound iron cores of 3150kVA and above. In this embodiment, both the first connecting part 311 and the second connecting part 321 can be detachably connected by means of bolt connection, snap connection, magnetic connection or pin connection.

[0053] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. An annealing mechanism for a single core characterized by, The annealing mechanism for a single iron core includes: A frame, the frame including interconnected supports and suspension brackets, the suspension brackets being used to pass through a core window of a single iron core, the suspension brackets being used to abut against the core window of the single iron core to restrict the movement of the single iron core relative to the suspension brackets in a first direction; An anti-tipping device includes an anti-tipping ramp and an anti-tipping guardrail. The anti-tipping ramp is connected to the support, and the anti-tipping guardrail is detachably connected to the support and / or the suspension frame. The anti-tipping ramp and the anti-tipping guardrail are spaced apart along a second direction. The anti-tipping ramp and the anti-tipping guardrail can respectively abut against the two sides of the single iron core that are opposite to each other along the second direction, so as to restrict the movement of the single iron core relative to the suspension frame along the second direction. The iron core copper busbar includes a first copper busbar and a second copper busbar, which are electrically connected. Both the first and second copper busbars extend along the second direction. The first copper busbar passes through the iron core window of the single iron core, and the second copper busbar is disposed outside the single iron core. The first and second copper busbars are electrically connected to the positive and negative electrodes of the annealing furnace, respectively. The first and second directions are perpendicular to each other.

2. The annealing mechanism for a single core according to claim 1, wherein The suspension bracket includes a frame body and a window-shaped pad. The frame body is connected to the support. The window-shaped pad extends along a third direction and is located at the top of the frame body. The frame body is used to pass through the core window of the single iron core. The window-shaped pad is used to abut against the core window of the single iron core. The first direction, the second direction, and the third direction are perpendicular to each other.

3. The annealing mechanism for a single core according to claim 2, wherein Let D1 be the extension length of the window contour pad along the third direction, and D2 be the width of the core window of the single iron core along the third direction. Then we have: (D2-2mm)≤D1<D2.

4. The annealing mechanism for a single core according to claim 2, wherein The number of window-shaped pads is at least one, and the number of anti-tipping guardrails is the same as the number of window-shaped pads and they are set in a one-to-one correspondence.

5. The annealing mechanism for a single core according to any one of claims 1 to 4, characterized in that, The anti-tipping guardrail includes a guardrail body, a first fastener, and a second fastener. The guardrail body is detachably connected to the suspension frame via the first fastener, and the guardrail body is detachably connected to the bracket via the second fastener.

6. The annealing mechanism for a single core according to claim 5, wherein The first fastener includes a first bolt, the second fastener includes a second bolt, the guardrail body is provided with a first mounting hole and a second mounting hole, the suspension bracket is provided with a first threaded hole, the bracket is provided with a second threaded hole, the first bolt passes through the first mounting hole and is threadedly engaged with the first threaded hole, and the second bolt passes through the second mounting hole and is threadedly engaged with the second threaded hole.

7. The annealing mechanism for a single core according to any one of claims 1 to 4, characterized by, The bracket includes a bottom support frame and a vertical support frame. The bottom support frame and the suspension frame are spaced apart from the vertical support frame along the first direction. Both the bottom support frame and the vertical support frame are connected to the anti-tipping slope. The anti-tipping slope is used to abut against the lower slope of the single iron core. Both the bottom support frame and the suspension frame are detachably connected to the anti-tipping guardrail.

8. The annealing mechanism for a single core according to claim 7, wherein The bracket also includes a first reinforcing member, and both the bottom support frame and the vertical support frame are connected to the first reinforcing member; And / or, The bracket also includes a second reinforcing member, and the vertical support frame is connected to the second reinforcing member.

9. The annealing mechanism for a single iron core as described in any one of claims 1 to 4, characterized in that, The first copper busbar includes a first connecting portion and a first conductive portion, and the second copper busbar includes a second connecting portion and a second conductive portion. The first conductive portion and the second conductive portion are electrically connected. Both the first conductive portion and the second conductive portion extend along the second direction. The first conductive portion is used to pass through the core window of the single iron core. The second conductive portion is disposed outside the single iron core. The end of the first conductive portion away from the second conductive portion is electrically connected to the first connecting portion. The end of the second conductive portion away from the first conductive portion is electrically connected to the second connecting portion. The first connecting portion and the second connecting portion are respectively used to be electrically connected to the positive and negative electrodes of the annealing furnace.

10. The annealing mechanism for a single core according to claim 9, wherein The first connecting part and the second connecting part are respectively used for electrically detachable connection with the positive and negative electrodes of the annealing furnace.

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