Manufacturing process of an amorphous alloy three-dimensional wound core transformer

Abstract

The present invention relates to a manufacturing process of an amorphous alloy three-dimensional wound core transformer, which includes the steps of: coil winding, winding the coil around the amorphous alloy three-dimensional wound core in sequence to form a core body; core body support, installing a lower clamping member on one yoke of the core body, supporting the coil on the lower clamping member, installing a support assembly on the bottom surface of the lower clamping member, and supporting the amorphous alloy three-dimensional wound core on the support assembly; core body flipping, flipping the core body together with the lower pressing plate and the lower clamping member integrally through a flipping table; core body fixing, installing an upper clamping member on the other yoke of the core body, and connecting the upper clamping member and the lower clamping member through a tensioning assembly. In this application, after the coil winding is completed, the coil is supported by the lower clamping member, and the amorphous alloy three-dimensional wound core is supported by the support assembly, thereby realizing the independent support of the coil and the amorphous alloy three-dimensional wound core respectively, avoiding the performance deterioration or breakage of the amorphous alloy three-dimensional wound core under the pressure of the coil, and ensuring the performance of the transformer.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer structures, and particularly to a manufacturing process for an amorphous alloy three-dimensional wound core transformer. Background Art

[0002] A transformer is one of the main devices in the power grid, and the development of low-loss transformers is an inevitable trend. The amorphous alloy three-dimensional wound core uses an iron-based amorphous metal as the core, and the unit iron loss is 70%-80% lower than that of silicon steel. The amorphous alloy three-dimensional wound core transformer has obvious advantages in energy conservation and consumption reduction compared with the transformer with a silicon steel core, and the advantages are more obvious with a larger capacity. In addition, the three-phase magnetic circuits in the amorphous alloy three-dimensional wound core are mutually balanced. Under the operating conditions of high-power and high-harmonic such as wind power and photovoltaic, the influence of harmonics on the amorphous alloy three-dimensional wound core transformer is smaller than that on the silicon steel core transformer. Therefore, in the field of new energy transformers, the amorphous alloy three-dimensional wound core transformer has obvious advantages in energy conservation and consumption reduction, and there is an obvious trend of capacity expansion.

[0003] However, since the amorphous alloy material is relatively thinner and more brittle than silicon steel sheets, it is very sensitive to stress, and its performance deteriorates and it is fragile after being stressed. If the stress on the core is not effectively controlled during the manufacturing and use of the transformer, problems such as increased no-load loss, no-load current, and noise of the transformer are likely to occur, affecting the use performance of the transformer. Summary of the Invention

[0004] Based on this, it is necessary to effectively control the stress on the amorphous alloy three-dimensional wound core during the manufacturing and use processes, and provide a manufacturing process for an amorphous alloy three-dimensional wound core transformer.

[0005] The present application provides a manufacturing process for an amorphous alloy three-dimensional wound core transformer, including the steps of:

[0006] Coil winding, winding the coil around the amorphous alloy three-dimensional wound core to form the body of the transformer;

[0007] Body support, installing a lower clamping member on one yoke of the body, installing a lower pressing plate between the lower clamping member and the coil, the coil and the lower pressing plate being supported on the lower clamping member, installing a support assembly on the bottom surface of the lower clamping member, and the amorphous alloy three-dimensional wound core being supported on the support assembly;

[0008] Body flipping, flipping the body together with the lower pressing plate and the lower clamping member integrally through a flipping table;

[0009] Body fixing, installing an upper clamping member on the other yoke of the body, and connecting the upper clamping member and the lower clamping member through a tensioning assembly to fix the body and the lower pressing plate between the upper clamping member and the lower clamping member.

[0010] In some embodiments, before the coil winding step, the following steps are further included:

[0011] Binding: Uniformly bind a protective tape on the iron core.

[0012] In some embodiments, before the coil winding step, the following steps are further included:

[0013] Insulating cylinder installation: Each layer of the two layers of insulating cylinders is spliced into two petals along the radial direction. The two layers of insulating cylinders are sleeved on the core column of the amorphous alloy three-dimensional wound core. The splicing seams on the two layers of insulating cylinders are staggered, and both ends are fixed on the convex platform of the winding mold; wherein, a limiting groove is provided on the insulating cylinder located on the outer layer, and the outgoing line row of the low-voltage coil is fixed in the limiting groove.

[0014] The coil winding specifically includes the following steps:

[0015] Wind the coil on the insulating cylinder located on the outer layer.

[0016] In some embodiments, the coil winding step further includes:

[0017] Engage the card slot at one end of the outgoing line row with the convex block of the winding mold, and drive the winding mold through a winding machine to wind the coil onto the amorphous alloy three-dimensional wound core.

[0018] In some embodiments, after the body fixing step, the following steps are further included:

[0019] Body assembly: Remove the upper clamping piece and the tensioning assembly on the body, and install a support strip curtain and support strips between the amorphous alloy three-dimensional wound core and the coil. Among them, the support strip curtain and the support strips are arranged along the radial direction of the coil between the core column of the amorphous alloy three-dimensional wound core and the insulating cylinder. The support strip curtain is arranged inside the window of the amorphous alloy three-dimensional wound core, and the width of the support strip curtain is 1 / 2 to 2 / 3 of the circumference of the insulating cylinder. The support strips are located outside the window of the amorphous alloy three-dimensional wound core.

[0020] In some embodiments, the body assembly step further includes:

[0021] Install an upper pressure plate on the side of the coil facing away from the lower clamping piece, and fix the coil between the lower clamping piece and the upper pressure plate.

[0022] In some embodiments, the body assembly step further includes:

[0023] Install a tension belt on the yoke on the side where the upper pressure plate is installed. The tension belt passes through between the yoke and the upper pressure plate and provides a pulling force for the yoke with a tendency to move away from the lower clamping piece.

[0024] In some embodiments, the core assembly step further includes:

[0025] Install an upper pressure plate on the side of the coil facing away from the lower clamping part, and fix the coil between the lower pressure plate and the upper pressure plate.

[0026] In some embodiments, the core assembly step further includes:

[0027] Install a pressing member on the upper clamping part, and press the coil through the pressing member.

[0028] In some embodiments, the core assembly step further includes:

[0029] Remove the support assembly connected to the lower clamping part, and lift the core through the upper clamping part, and tighten the pulling belt to limit the iron core.

[0030] For the manufacturing process of the amorphous alloy three-dimensional wound core transformer described above, after the winding of the coil is completed, the coil is supported by the lower clamping part, and the amorphous alloy three-dimensional wound core is supported by the support assembly, thereby realizing the independent support of the coil and the amorphous alloy three-dimensional wound core, avoiding the performance deterioration or breakage of the amorphous alloy three-dimensional wound core due to bearing the gravity of the coil during the core turnover, core assembly, and core lifting, and at the same time avoiding the quality problem of the misalignment of the coil insulating cylinder, and ensuring the performance of the transformer. Description of the Drawings

[0031] Figure 1 It is a flowchart of the manufacturing process of the amorphous alloy three-dimensional wound core transformer according to an embodiment of the present application;

[0032] Figure 2 It is a schematic structural diagram of a coil according to an embodiment of the present application;

[0033] Figure 3 It is a schematic structural diagram of a coil according to an embodiment of the present application;

[0034] Figure 4 It is a schematic structural diagram of the lower clamping part and the support assembly according to an embodiment of the present application;

[0035] Figure 5 It is a schematic structural diagram of an insulating cylinder according to an embodiment of the present application;

[0036] Figure 6 It is a schematic structural diagram of an outgoing line row according to an embodiment of the present application;

[0037] Figure 7 It is a schematic structural diagram of an outgoing line row according to an embodiment of the present application;

[0038] In the figure: 10, low-voltage coil; 20, high-voltage coil; 30, lower clamping part; 40, support assembly; 50, insulating cylinder; 60, outgoing line row; 51, limiting groove; 52, butt joint seam; 61, clamping groove. Specific embodiments

[0039] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0042] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0045] Compared with the traditional silicon steel core, the amorphous alloy three-dimensional wound core has obvious advantages in energy conservation and consumption reduction. However, due to its thin and brittle material, the amorphous alloy three-dimensional wound core is very sensitive to stress, and its performance deteriorates and it is fragile after being stressed. If the stress on the iron core is not effectively controlled during the manufacturing and use of the transformer, it is easy to cause problems such as increased no-load loss, no-load current and noise of the transformer, affecting the use performance of the transformer.

[0046] Compared with other external forces, the force exerted by the coil on the amorphous alloy three-dimensional wound core is the most significant. Whether during the coil winding process, or during the body flipping process, or during the subsequent use of the transformer, the amorphous alloy three-dimensional wound core may be subjected to extrusion force from the coil, resulting in deterioration of the performance or breakage of the amorphous alloy three-dimensional wound core.

[0047] Based on this, in order to reduce the extrusion force exerted by the coil on the amorphous alloy three-dimensional wound core, the present application provides a manufacturing process for an amorphous alloy three-dimensional wound core transformer, in which the coil and the iron core are independently supported during the transformer manufacturing process to avoid the coil applying extrusion force to the iron core and damaging the iron core performance.

[0048] Figure 1 The flowchart of the manufacturing process for an amorphous alloy three-dimensional wound core transformer according to an embodiment of the present invention is shown, Figure 2 and Figure 3 The structural schematic diagrams of the coil according to an embodiment of the present invention are both shown. For ease of description, the drawings only show the structures related to the embodiments of the present invention.

[0049] Refer to Figure 1 、 Figure 2 and Figure 3 , an embodiment of the present invention provides a manufacturing process of an amorphous alloy three-dimensional wound core transformer, including the steps of:

[0050] S10: Coil winding, winding the coils onto the amorphous alloy three-dimensional wound core in sequence to form the body of the transformer.

[0051] It should be noted that since the amorphous alloy three-dimensional wound core is composed of three single-phase core frames combined together, therefore, the amorphous alloy three-dimensional wound core has three mutually parallel core columns. Coils are wound on the three core columns respectively to form the body.

[0052] In addition, the coils in this application include a low-voltage coil 10 and a high-voltage coil 20. Among them, first, the winding mold is installed on the core column of the amorphous alloy three-dimensional wound core, the insulating cylinder 50 is installed on the convex platform of the winding mold, the low-voltage coil 10 is wound on the insulating cylinder 50, and then the high-voltage coil 20 is wound on the low-voltage coil 10.

[0053] Specifically, during the coil winding process, first, the winding mold is installed on the core column of the amorphous alloy three-dimensional wound core, the insulating cylinder 50 is installed on the convex platform of the winding mold, and the low-voltage coil 10 is wound on the insulating cylinder 50. The winding mold is installed on the amorphous alloy three-dimensional wound core according to the winding direction of the low-voltage coil 10, and the winding machine is driven to wind the low-voltage coil 10 onto the insulating cylinder 50.

[0054] When the low-voltage coil 10 is wound to 1.25 turns - 1.5 turns, stop the winding machine and adjust the pressure of the pressure roller on the winding machine or adjust the current magnitude on the winding machine, so that the low-voltage coil 10 is wound with tension, and thus is wound more tightly onto the insulating cylinder 50.

[0055] Furthermore, the tension magnitude during the winding of the low-voltage coil 10 is determined according to the cross-sectional area of the wire of the low-voltage coil 10. Specifically, the tension is set to 15N / mm 2 -20N / mm 2 .

[0056] After the low-voltage coil 10 is wound, a layer of non-woven fiberglass adhesive tape is half-overlapped and wound on the outermost layer of the low-voltage coil 10.

[0057] After the winding of the low-voltage coil 10 is completed, continue to wind the high-voltage coil 20 through the winding machine. When the high-voltage coil 20 is wound to the third turn, stop the winding machine and adjust the current magnitude on the winding machine, so that the high-voltage coil 20 is wound with tension. Similarly, the tension is set to 15N / mm according to the cross-sectional area of the wire of the high-voltage coil 20 2-20 N / mm 2 。

[0058] After the high-voltage coil 20 is wound, a layer of non-woven fiberglass tape is semi-overlapped and wound on the outermost layer of the high-voltage coil 20.

[0059] Further, the winding mold is removed from the body.

[0060] Figure 4 The structural schematic diagram of the lower clamping part and the support assembly in an embodiment of the present invention is shown.

[0061] S20: Body support, as Figure 4 shown, the lower clamping part 30 and the lower pressing plate are installed on one side yoke of the body. The coil and the lower pressing plate are supported on the lower clamping part 30. The support assembly 40 is installed on the bottom surface of the lower clamping part 30, and the amorphous alloy three-dimensional wound core is supported on the support assembly 40.

[0062] It should be noted that since the body maintains the state of the core column being horizontal during coil winding. Before installing the lower clamping part 30, the body has been separated from the winding machine. Therefore, it is necessary to pre-set a support platform to support the body so that the body maintains the core column horizontally supported on the support platform.

[0063] Specifically, the support platform can be the operating table surface of the turning table. A buffer pad is placed on the support platform so that the body is supported on the buffer pad, thereby reducing the impact of the support platform on the body and avoiding deformation of the amorphous alloy three-dimensional wound core in the body.

[0064] Further, the buffer pad can be set as a sponge pad or other elastic structures, which will not be elaborated here.

[0065] After the body is stably supported on the support platform, the lower pressing plate, the lower clamping part 30 and the support assembly 40 are installed on one side yoke of the body.

[0066] Specifically, the support assembly 40 includes a support plate and support pads installed on the support plate corresponding to the position of the lower yoke. First, the support plate is assembled with the lower clamping part 30. The lower clamping part 30 is sleeved on the lower yoke of the amorphous alloy three-dimensional wound core. A lower pressing plate is installed between the lower clamping part 30 and the low-voltage coil 10 and the high-voltage coil 20 so that the low-voltage coil 10 and the high-voltage coil 20 are supported on the lower clamping part 30, and the lower yoke is supported on the support pads installed on the support plate.

[0067] S30: Body turning, the body together with the lower pressing plate and the lower clamping part is turned as a whole through the turning table.

[0068] By flipping the body of the transformer, the body is transformed from a state where the core column is horizontal to a state where the core column is vertical. During the flipping process, the lower clamping member 30 and the support plate are supported below the body. Thus, the low-voltage coil 10 and the high-voltage coil 20 can be supported on the lower clamping member 30, and the amorphous alloy three-dimensional wound core can be supported on the support assembly 40.

[0069] S40: Fix the body of the transformer. Install the upper clamping member on the other yoke of the body of the transformer, and connect the upper clamping member and the lower clamping member 30 through the tensioning assembly to fix the body of the transformer between the upper clamping member and the lower clamping member 30.

[0070] Specifically, the tensioning assembly can be configured as a tensioning screw rod. Connect the tensioning screw rod between the upper clamping member and the lower clamping member 30 to fix the body of the transformer. It can be understood that in some other embodiments, the tensioning assembly can also be set to other structures other than the tensioning screw rod, which will not be elaborated here.

[0071] After the body of the transformer stands up after being flipped on the flipping table, install the upper clamping member on the upper yoke of the body of the transformer, and tighten the upper clamping member and the lower clamping member 30 through the tensioning screw rod to fix the body of the transformer between the upper clamping member and the upper clamping member.

[0072] Lift the fixed body of the transformer through the upper clamping member, and lift the body of the transformer off the flipping table.

[0073] In some embodiments, before the coil winding step, the following steps are further included:

[0074] S08: Binding. Uniformly bind the protective belt on the amorphous alloy three-dimensional wound core.

[0075] Specifically, the protective belt is a PET protective belt. Bind the PET protective belt on the three core columns and the yoke of the amorphous alloy three-dimensional wound core respectively. Thus, the mechanical strength of the amorphous alloy three-dimensional wound core can be increased, and it can be prevented from being broken or deformed due to external forces.

[0076] Figure 5 Shows a schematic structural diagram of an insulating cylinder in an embodiment of the present invention, Figure 6 and Figure 7 Both show a schematic structural diagram of an outgoing line row in an embodiment of the present invention.

[0077] Please combine Figure 5 、 Figure 6 and Figure 7 Furthermore, before the coil winding step, the following steps are further included:

[0078] S09: Installation of the insulating cylinder 50. Each layer of the two layers of insulating cylinders 50 is spliced into two petals along the radial direction. The two layers of insulating cylinders 50 are sleeved on the amorphous alloy three-dimensional wound core, and the splicing seams on the two layers of insulating cylinders 50 are staggered and fixed at both ends on the convex platform of the winding die. Among them, a limiting groove 51 is provided on the outer circumference of the insulating cylinder 50 located on the outer layer, and the outgoing line row 60 of the low-voltage coil 10 is fixed in the limiting groove 51.

[0079] Further, the coil winding specifically includes the steps of:

[0080] Wind the coil on the insulating cylinder 50 located on the outer layer.

[0081] Specifically, since butt joints 52 are distributed along the outer circumference of the insulating cylinder 50, when the two layers of insulating cylinders 50 are sleeved, the butt joints 52 of the two layers of insulating cylinders 50 are arranged in a staggered manner, so as to ensure the support strength of the two layers of insulating cylinders 50. In addition, glue is brushed between the two layers of insulating cylinders 50 for bonding and fixing, or fixed by riveting, so as to improve the mechanical strength of the two layers of insulating cylinders.

[0082] A limiting groove 51 is provided on the outer circumference of the insulating cylinder 50 located on the outer layer, and the limiting groove 51 is arranged parallel to the axial direction of the insulating cylinder 50. In addition, the limiting groove 51 is used to accommodate the outgoing line row 60 of the low-voltage coil 10.

[0083] In some embodiments, in the coil winding step, the card slot 61 at one end of the outgoing line row 60 is engaged with the convex block of the winding die, and the winding die is driven by a winding machine to wind the coil onto the amorphous alloy three-dimensional wound core.

[0084] The card slot 61 on the outgoing line row 60 is in clamping fit with the convex block on the winding die, so that the two remain stable during the winding process, ensuring that the coil winding is more compact and preventing the coil from deforming.

[0085] Further, after the body fixing step, the following steps are further included:

[0086] S50: Drying and shaping. Lift the body by the upper clamping piece and move it into a hot air circulation drying tank. The temperature in the drying tank rises to 140°C ± 5°C and is maintained for four hours, and then the temperature starts to drop. When the temperature in the drying tank drops to 80°C, it is maintained for half an hour, and then the body is taken out of the drying tank.

[0087] After drying and shaping, the glue between the insulating cylinders 50 cures, and the glue carried by the interlayer insulation of the coil cures, making the coil structure more stable.

[0088] In some embodiments, after the body fixing step, the following steps are further included:

[0089] S60: Body assembly. Remove the upper clamping parts and tensioning components on the body, and install a strip curtain and strips between the amorphous alloy three-dimensional wound core and the coil. Among them, the strip curtain and strips are arranged radially along the coil between the core columns of the amorphous alloy three-dimensional wound core and the insulating cylinder 50. The strip curtain is arranged inside the window of the amorphous alloy three-dimensional wound core, and the width of the strip curtain is 1 / 2 to 2 / 3 of the circumference of the insulating cylinder. The strips are located outside the window of the amorphous alloy three-dimensional wound core.

[0090] In addition, the strip curtain can also be made of cardboard or other insulating materials, which will not be elaborated here.

[0091] Specifically, since the amorphous alloy three-dimensional wound core is a closed structure, each core column includes two parts located inside and outside the core window. Therefore, for the convenience of operation, first rotate the part of the coil inside the core window to the outside of the core window, install the strip curtain from the outside of the core window between the insulating cylinder 50 and the core columns of the amorphous alloy three-dimensional wound core, and fix it to the insulating cylinder 50. Further, synchronously rotate the insulating cylinder 50, the coil, and the first part of the strip curtain so that the strip curtain rotates to the inside of the core window. Then install the strips between the core columns outside the current core window and the insulating cylinder 50. Thus, the installation of the entire strip curtain and strips is achieved.

[0092] Install the strip curtain between the core columns and the insulating cylinder 50 through the above steps, so that several strips are evenly arranged along the circumference of the insulating cylinder 50.

[0093] In some embodiments, the body assembly step further includes:

[0094] Install an upper pressure plate on the side of the coil facing away from the lower clamping part 30, and fix the coil between the lower clamping part 30 and the upper pressure plate.

[0095] The upper pressure plate corresponds to the lower pressure plate and the lower clamping part 30 to press the low-voltage coil 10 and the high-voltage coil 20 in the vertical direction.

[0096] Further, the body assembly step further includes:

[0097] Install a tension belt on the yoke on the side where the upper pressure plate is installed. The tension belt passes through between the yoke and the upper pressure plate and provides a pulling force for the yoke with a tendency to move away from the lower clamping part 30.

[0098] Specifically, the tension belt can be set as a steel tension belt to improve the connection strength. Install the steel tension belt into the window of the upper yoke, and install a spacer block between the steel tension belt and the upper yoke for support and limit. One end of the steel tension belt is fixed to the external structure, and the other end is also fixed to the external structure after passing through the upper yoke. Thus, the steel tension belt limits the upper yoke to provide an upward supporting force for the upper yoke.

[0099] Even further, the body assembly step further includes:

[0100] Install the upper clamping piece and the tensioning component, and fix the coil between the upper clamping piece and the lower clamping piece 30 through the tensioning component.

[0101] Install a pressing component on the upper clamping piece, and press the low-voltage coil 10 and the high-voltage coil 20 through the pressing component.

[0102] Specifically, the pressing component is set as a pressure nail, and the pressure nail is tightened so that the upper pressing plate just presses down to the upper end of the low-voltage coil 10.

[0103] Furthermore, the steps of the core assembly further include:

[0104] Remove the support component 40 connected to the lower clamping piece 30, lift the core through the upper clamping piece, and tighten the steel strap to limit the amorphous alloy three-dimensional wound core.

[0105] Lift the core through the upper clamping piece so that the amorphous alloy three-dimensional wound core is suspended on the low-voltage coil 10 and the high-voltage coil 20. At this time, remove the support component 40 assembled on the lower clamping piece 30, so that the core drops. At this time, the lower yoke of the amorphous alloy three-dimensional wound core is in a separated state from the lower clamping piece 30. At this time, tighten the steel strap so that the steel strap is tightened and limits the amorphous alloy three-dimensional wound core.

[0106] Finally, connect the grounding piece of the amorphous alloy three-dimensional wound core to the upper clamping piece, and the reliable grounding of the amorphous alloy three-dimensional wound core can be realized. Thus, the entire manufacturing process of the core assembly of the amorphous alloy three-dimensional wound core transformer is completed.

[0107] The manufacturing process of the amorphous alloy three-dimensional wound core transformer in the above embodiments has at least the following advantages:

[0108] 1) Install the lower clamping piece 30 to support the coil, and at the same time install the support component 40 to support the amorphous alloy three-dimensional wound core, so that the coil and the amorphous alloy three-dimensional wound core can be independently supported respectively, avoiding the amorphous alloy three-dimensional wound core from being squeezed by the coil during the processes of turning over, assembling and moving, resulting in deteriorated performance or breakage, and at the same time avoiding the quality problem of the misalignment of the coil insulating cylinder, and ensuring the performance of the transformer;

[0109] 2) Binding the PET protective tape on the amorphous alloy three-dimensional wound core can improve the mechanical strength of the amorphous alloy three-dimensional wound core from the source and reduce the probability of the amorphous alloy three-dimensional wound core being deformed by external force extrusion;

[0110] 3) The two-layer insulating cylinder 50 can improve the mechanical strength of the coil wound thereon, prevent the coil from deforming, and ensure the tightness of the coil wound on the amorphous alloy three-dimensional wound core;

[0111] 4) The outgoing line row 60 of the coil is fixed in the limit groove 51 on the insulating cylinder 50, and the clamping groove 61 on the outgoing line row 60 is correspondingly clamped with the convex block on the winding die, so that the insulating cylinder 50 and the outgoing line row 60 do not have relative displacement, ensuring the outgoing line position.

[0112] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0113] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A manufacturing process of an amorphous alloy three-dimensional wound core transformer, It is characterized in that Includes steps: Binding, evenly binding a protective tape on the iron core; The insulating tube is installed by splicing two petals of each layer of the two-layer insulating tube in the radial direction, and the two-layer insulating tube is sleeved on the core column of the amorphous alloy three-dimensional wound iron core. The splicing seams on the two-layer insulating tube are staggered, and the two ends are fixed on the winding mold boss; the insulating tube located at the outer layer is provided with a limiting groove, and the limiting groove is arranged parallel to the axial direction of the insulating tube; Coil winding, winding the coil on the amorphous alloy three-dimensional wound core to form the body of the transformer; wherein the coil includes a low-voltage coil and a high-voltage coil, and the outgoing line row of the low-voltage coil is fixed in the limiting groove; after the low-voltage coil is wound on the insulating cylinder, the high-voltage coil is wound on the low-voltage coil; The device body is supported, a lower clamp is installed on an iron yoke on one side of the device body, a lower pressure plate is installed between the lower clamp and the coil, the coil and the lower pressure plate are supported on the lower clamp, a support assembly is installed on the bottom surface of the lower clamp, and the amorphous alloy three-dimensional wound iron core is supported on the support assembly; The device body is turned over, and the device body, the lower pressing plate and the lower clamp are turned over as a whole by a turning table; The device body is fixed, and an upper clamp is installed on the iron yoke on the other side of the device body. The upper clamp is connected to the lower clamp through a tensioning assembly to fix the device body and the lower pressure plate between the upper clamp and the lower clamp.

2. The manufacturing process of the amorphous alloy three-dimensional wound core transformer according to claim 1, It is characterized in that The coil winding specifically comprises the steps of: The coil is wound around the insulating cylinder located on the outer layer.

3. The manufacturing process of the amorphous alloy three-dimensional wound core transformer according to claim 2, It is characterized in that The coil winding step also includes: The clamping groove at one end of the output wire row is clamped on the protrusion of the winding mold, and the winding mold is driven by a winding machine to wind the coil onto the amorphous alloy three-dimensional winding core.

4. The manufacturing process of the amorphous alloy three-dimensional wound core transformer according to claim 1, It is characterized in that After the device body fixing step, the step further includes: Assemble the device body, remove the upper clamp and the tensioning assembly on the device body, and install a support curtain and support bars between the amorphous alloy three-dimensional wound iron core and the coil, wherein the support curtain and support bars are arranged between the core column of the amorphous alloy three-dimensional wound iron core and the insulating tube along the radial direction of the coil, the support curtain is arranged on the inner side of the amorphous alloy three-dimensional wound iron core window, the width of the support curtain is 1 / 2 to 2 / 3 of the circumference of the insulating tube, and the support bars are located on the outer side of the amorphous alloy three-dimensional wound iron core window.

5. The manufacturing process of the amorphous alloy three-dimensional wound core transformer according to claim 4, It is characterized in that The body assembly step also includes: An upper pressing plate is installed on a side of the coil away from the lower clamp, and the coil is fixed between the lower pressing plate and the upper pressing plate.

6. The manufacturing process of the amorphous alloy three-dimensional wound core transformer according to claim 5, It is characterized in that The body assembly step also includes: Install a pulling belt on the yoke on the side where the upper pressing plate is installed. The pulling belt passes through the space between the yoke and the upper pressing plate and provides a pulling force to the yoke with a tendency to move away from the lower clamping member.

7. The manufacturing process of the amorphous alloy three-dimensional wound core transformer according to claim 6, characterized in that, the core assembly step further includes: installing the upper clamping member and the tensioning assembly, and fixing the coil between the upper clamping member and the lower clamping member through the tensioning assembly.

8. The manufacturing process of the amorphous alloy three-dimensional wound core transformer according to claim 6, characterized in that, the core assembly step further includes: installing a pressing member on the upper clamping member and pressing the coil through the pressing member.

9. The manufacturing process of the amorphous alloy three-dimensional wound core transformer according to claim 7, characterized in that, the core assembly step further includes: removing the support assembly connected to the lower clamping member, lifting the core through the upper clamping member, and tightening the pulling belt to limit the core.

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