An efficient combined silicon steel sheet for transformers

Abstract

The present invention discloses a high-efficiency combined silicon steel sheet for a transformer, belonging to the technical field of transformer cores. It includes a transformer installation support, a combined silicon steel sheet, and an assembly component for efficiently assembling the combined silicon steel sheet. The combined silicon steel sheet is composed of two semi-silicon sheets arranged oppositely. A central silicon sheet is arranged on the semi-silicon sheet on one side, and a combined slot for locking the central silicon sheet is provided on the semi-silicon sheet on the other side. In the present invention, through the design of the silicon steel sheet, during assembly, the semi-silicon sheets arranged in half are pre-assembled first through the assembly positioning openings on the assembly plug socket, and then the assembled semi-group of silicon steel sheets are staggeredly butted. After the staggered butting, a downward pressure is applied to the butting interface of the semi-silicon sheets through the round table-shaped clamping parts arranged on the equalizing positioning columns, so as to achieve the tight fitting of adjacent semi-silicon sheets. Therefore, on the premise of ensuring the assembly quality, the assembly efficiency is significantly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer cores, and particularly to an efficient combined silicon steel sheet for transformers. Background Art

[0002] Transformer silicon steel sheets are key materials for manufacturing transformer cores, mainly used to reduce hysteresis loss and eddy current loss and improve transformer efficiency. Transformer silicon steel sheets play an important role in transformer manufacturing through their excellent magnetic properties and low loss characteristics.

[0003] The assembly of silicon steel sheets is a key step in transformer manufacturing, directly affecting the performance and efficiency of transformers. The current structure of silicon steel sheets requires gradual stacking of silicon steel sheets, and it is also necessary to ensure accurate positioning between adjacent silicon steel sheets and close fitting to avoid gaps, which makes the processing efficiency very low. Moreover, the area of silicon steel sheets required for large transformers is relatively large. After the current silicon steel sheet structure is assembled, it is compressed by bolts or tie rods. The pressing devices located around will apply an inward pressure to the silicon steel sheets. The existence of this stress will cause uneven stress distribution of the silicon steel sheets, and stress concentration will have a negative impact on the magnetic properties of the silicon steel sheets. Based on this, an efficient combined silicon steel sheet for transformers is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and to propose an efficient combined silicon steel sheet for transformers.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An efficient combined silicon steel sheet for transformers, including a transformer installation support, a combined silicon steel sheet, and an assembly component for efficiently assembling the combined silicon steel sheet. The combined silicon steel sheet is composed of two semi-silicon sheets arranged oppositely. A central silicon sheet is provided on one of the semi-silicon sheets, and a combined slot for locking the central silicon sheet is provided on the other semi-silicon sheet.

[0007] The transformer installation support includes an assembly base. Limiting angle pressing parts for applying pressure to the combined silicon steel sheet are provided at the four corners of the assembly base. Uniform pressure positioning columns are threadedly connected to the assembly base, and round table-shaped clamping parts for tightly connecting the semi-silicon sheets are provided on the uniform pressure positioning columns.

[0008] The assembly component includes an assembly table. The assembly table is connected with two oppositely arranged assembly plug sockets through a translation driving part, and assembly positioning ports for inserting and positioning the semi-silicon sheets are provided on the assembly plug sockets.

[0009] Preferably, the combined slot is arranged in a "V" shape, a V-shaped plug is arranged at the end of the middle silicon wafer, and the V-shaped plug is adapted to the combined slot.

[0010] Preferably, the limiting angle pressing member includes an L-shaped slot opened on the assembly base and an L-shaped corner wrapping plate, and a corner pressing block is arranged at the top of the L-shaped corner wrapping plate;

[0011] The inner wall of the L-shaped slot is provided with a locking helical groove, and an inclined tooth locking layer adapted to the locking helical groove is fixedly connected to the side wall of the L-shaped corner wrapping plate.

[0012] Preferably, a hollow opening is arranged in the pressure equalizing positioning column, a threaded pressing column is arranged in the hollow opening, the threaded pressing column is threadedly connected to the assembly base, and a knob pressing disc is arranged at the top of the threaded pressing column.

[0013] Preferably, the half silicon wafer is in a "C" shape, a semi-card slot with a larger upper part and a smaller lower part is opened at the end of the half silicon wafer, and the semi-card slots on the two half silicon wafers form a circle and are adapted to the round table-shaped card member.

[0014] Preferably, the round table-shaped card members are evenly distributed on the pressure equalizing positioning column, and the thickness of the round table-shaped card member is smaller than the thickness of the half silicon wafer.

[0015] Preferably, the translation driving member includes a translation sliding groove opened on the assembly table, a translation sliding block located in the translation sliding groove is fixedly connected to the bottom of the assembly plug socket, and electric push rods for pushing the translation sliding block are arranged on both sides of the assembly table.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. By designing the silicon steel sheet, during assembly, the half silicon wafers arranged in half are pre-assembled through the assembly positioning openings on the assembly plug socket first, and then the assembled half sets of silicon steel sheets are staggeredly butted. After the staggered butting, the round table-shaped card members arranged on the pressure equalizing positioning column apply a downward pressure to the butting joints of the half silicon wafers, realizing the tight fit of adjacent half silicon wafers. Therefore, on the premise of ensuring the assembly quality, the assembly efficiency is significantly improved.

[0018] 2. By applying the same downward pressure through the L-shaped corner wrapping plates arranged around the silicon steel sheet and generating an inward wrapping pressure on the silicon steel sheet, by designing the half silicon wafers, the middle silicon wafer shares the extrusion pressure through the V-shaped plug and the combined slot, and the round table-shaped card members on the pressure equalizing positioning column apply the same lateral stress to each silicon steel sheet. The lateral stress and the inward pressure applied by the fasteners around will act on the silicon steel sheet together, so as to ensure that the pressure at each position is evenly distributed and avoid the situation that the magnetic properties of the silicon steel sheet are poor due to concentrated stress and stress unevenness. Description of the Drawings

[0019] Figure 1 Schematic structural diagram of the combined silicon steel sheet in a high-efficiency combined silicon steel sheet for transformers proposed by the present invention;

[0020] Figure 2 Schematic assembly structure diagram of the combined silicon steel sheet and the transformer installation support in a high-efficiency combined silicon steel sheet for transformers proposed by the present invention;

[0021] Figure 3 Schematic structural diagram of two half-silicon sheets in a high-efficiency combined silicon steel sheet for transformers proposed by the present invention;

[0022] Figure 4 Schematic cross-sectional structure diagram of the voltage equalizing positioning column and the round table-shaped clamping part in a high-efficiency combined silicon steel sheet for transformers proposed by the present invention;

[0023] Figure 5 Schematic structural diagram of the assembly in a high-efficiency combined silicon steel sheet for transformers proposed by the present invention;

[0024] Figure 6 is Figure 5 Enlarged structural diagram of the A position in

[0025] In the figure: 1. Half-silicon sheet; 2. Middle silicon sheet; 3. Combined slot; 4. Assembly base; 5. Voltage equalizing positioning column; 6. Round table-shaped clamping part; 7. Assembly table; 8. Assembly plug socket; 9. Assembly positioning port; 10. V-shaped plug; 11. L-shaped slot; 12. L-shaped corner plate; 13. Corner pressing block; 14. Helical tooth locking layer; 15. Threaded pressing column; 16. Knob pressing disc; 17. Half bayonet; 18. Translation slider; 19. Translation chute; 20. Electric push rod. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is 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 cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. 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.

[0029] Example, refer to Figures 1 to 6 , A high-efficiency combined silicon steel sheet for a transformer, including a transformer installation support, a combined silicon steel sheet, and an assembly for efficiently assembling the combined silicon steel sheet. The combined silicon steel sheet is composed of two semi-silicon sheets 1 arranged oppositely, and the semi-silicon sheets 1 are arranged in an interleaved manner.

[0030] A central silicon sheet 2 is arranged on the semi-silicon sheet 1 on one side, and a combined slot 3 for locking the central silicon sheet 2 is provided on the semi-silicon sheet 1 on the other side. The combined slot 3 is arranged in a "V" shape. A V-shaped plug 10 is arranged at the end of the central silicon sheet 2, and the V-shaped plug 10 is adapted to the combined slot 3;

[0031] It should be noted that after the two semi-silicon sheets 1 arranged oppositely are combined, the V-shaped plug 10 is in the combined slot 3 and is constantly subjected to the pressure exerted by the combined slot 3. That is, after the V-shaped plug 10 and the combined slot 3 are assembled, there is a compressive stress between the two.

[0032] The transformer installation support includes an assembly base 4. Limiting angle pressing parts for applying pressure to the combined silicon steel sheet are arranged at the four corners of the assembly base 4. Further, the limiting angle pressing parts include an L-shaped slot 11 and an L-shaped corner wrapping plate 12 opened on the assembly base 4. A corner pressing block 13 is arranged at the top of the L-shaped corner wrapping plate 12; wherein the L-shaped corner wrapping plate 12 wraps the four corners of the assembled combined silicon steel sheet to ensure the installation effect of the combined silicon steel sheet, and the corner pressing block 13 applies a downward pressure to the four corners of the combined silicon steel sheet to ensure that the pressures applied through the limiting angle pressing parts are the same.

[0033] The inner wall of the L-shaped slot 11 is provided with a locking helical groove, and the side wall of the L-shaped corner plate 12 is fixedly connected with a helical locking layer 14 adapted to the locking helical groove. Through the cooperation between the locking helical groove and the helical locking layer 14, it can ensure that after the L-shaped corner plate 12 is inserted into the L-shaped slot 11, the locking between the two can be realized. And the setting of the same locking helical groove and the helical locking layer 14 can ensure that the pressures applied to the four corners of the silicon steel sheet by the limit angle pressing parts are the same.

[0034] The equalizing positioning column 5 is threadedly connected to the assembly base 4. The equalizing positioning column 5 is provided with a round table-shaped clamping part 6 for tightly connecting the half silicon wafers 1. A hollow opening is formed in the equalizing positioning column 5, and a threaded pressing column 15 is arranged in the hollow opening. The threaded pressing column 15 is threadedly connected to the assembly base 4. A knob pressing disc 16 is arranged at the top of the threaded pressing column 15. The knob pressing disc 16 can be rotated by a tool, so that the threaded pressing column 15 and the assembly base 4 are threadedly tightened. When tightening, pressure is applied to the equalizing positioning column 5, driving the equalizing positioning column 5 and the round table-shaped clamping part 6 thereon to press downwards, and applying a downward pressure to the silicon steel sheet.

[0035] Furthermore, the half silicon wafer 1 is in a "C" shape, and a half bayonet 17 with a larger upper part and a smaller lower part is formed at the end of the half silicon wafer 1. The half bayonets 17 on the two half silicon wafers 1 form a circle and are adapted to the round table-shaped clamping part 6. The round table-shaped clamping parts 6 are evenly distributed on the equalizing positioning column 5, and the thickness of the round table-shaped clamping part 6 is less than the thickness of the half silicon wafer 1.

[0036] It should be noted that the round table-shaped clamping part 6 will move downwards under the downward drive of the equalizing positioning column 5. When the round table-shaped clamping part 6 moves downwards, it will squeeze the two side half bayonets 17 adapted to it. The setting of the round table structure can ensure the generation of inclined stress. At this time, the component force of the stress can be divided into transverse stress and downward extrusion force. The downward extrusion force can ensure that two adjacent silicon steel sheets can be in close contact. The transverse stress will act on the silicon steel sheet together with the inward pressure applied by the surrounding fasteners, so as to ensure that the pressure at each position can be evenly distributed, and avoid the situation that the magnetic properties of the silicon steel sheet are poor due to concentrated stress and uneven stress.

[0037] The assembly includes an assembly table 7. The assembly table 7 is connected with two oppositely arranged assembly plug sockets 8 through a translation driving part. The assembly plug sockets 8 are provided with assembly positioning openings 9 for inserting and positioning the half silicon wafers 1. The assembly positioning opening 9 is composed of a rectangular opening internally adapted to the size of the half silicon wafer 1 and a guiding opening formed at the end of the rectangular opening. The setting of the guiding opening can facilitate the insertion of the half silicon wafer 1.

[0038] The translation driving member includes a translation sliding groove 19 formed in the assembly table 7. A translation slider 18 located in the translation sliding groove 19 is fixedly connected to the bottom of the assembly plug socket 8. Electric push rods 20 for pushing the translation slider 18 are arranged on both sides of the assembly table 7. The electric push rods 20 are prior art and will not be elaborated here;

[0039] During assembly, multiple half-silicon wafers 1 can be first inserted into the assembly positioning openings 9. After the half-silicon wafers 1 on the two assembly plug sockets 8 are all plugged in place, they are flipped 90 degrees, and then the half-silicon wafers 1 on the two assembly plug sockets 8 are assembled with the magnetic core, which can significantly improve the assembly efficiency of the silicon steel sheets. The present invention pre-assembles the half-silicon wafers 1 arranged in pairs through the assembly positioning openings 9 on the assembly plug sockets 8 first, and then the assembled half sets of silicon steel sheets are staggeredly butted. At this time, the relatively arranged half-silicon wafers 1 are not in a tightly contacting state, and the shear stress is very small when they contact, so the staggered butting of the two sets of silicon steel sheets can be realized. After the butting, pressure is applied through the round table-shaped clamping members 6 on the voltage equalizing positioning posts 5 for locking. Compared with the traditional stacking method, the assembly efficiency can be greatly increased.

[0040] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A high-efficiency combined silicon steel sheet for a transformer, comprising a transformer mounting support, a combined silicon steel sheet and an assembly for efficiently assembling the combined silicon steel sheet, characterized in that: The combined silicon steel sheet is composed of two half silicon sheets (1) arranged opposite to each other, a middle silicon sheet (2) is arranged on the half silicon sheet (1) located on one side, and a combination slot (3) for locking the middle silicon sheet (2) is provided on the half silicon sheet (1) located on the other side; The transformer mounting support comprises an assembly base (4), wherein the four corners of the assembly base (4) are provided with limiting angle pressure pieces for applying pressure to the combined silicon steel sheets, the assembly base (4) is threadedly connected with a pressure equalizing positioning column (5), and the pressure equalizing positioning column (5) is provided with an inverted frustum-type clamp (6) for fastening and connecting the half silicon sheet (1), wherein the inverted frustum-type clamp (6) is configured as an inverted frustum-type structure, which can ensure that stress on the inclined surface is generated, and the stress component is divided into a lateral stress and a downward extrusion force, wherein the downward extrusion force can ensure that two adjacent silicon steel sheets can be in close contact, and the lateral stress will act on the silicon steel sheet together with the inward pressure applied by the surrounding fasteners, thereby ensuring that the pressure at each position can be evenly distributed; The assembly component comprises an assembly table (7), the assembly table (7) being connected to two assembly sockets (8) arranged opposite to each other via a translation drive component, the assembly sockets (8) being provided with assembly positioning openings (9) for positioning the half silicon wafer (1) for insertion; The pressure-equalizing positioning column (5) has a hollow opening in it, a threaded pressure column (15) is arranged in the hollow opening, the threaded pressure column (15) is threadedly connected to the assembly base (4), and a knob pressure plate (16) is arranged on the top of the threaded pressure column (15); The half silicon wafer (1) is in a "C" shape, and a half bayonet (17) with a larger upper portion and a smaller lower portion is provided at the end of the half silicon wafer (1). The half bayonet (17) on the two half silicon wafers (1) form a circle and are compatible with the rounded table-type clamp (6); The inverted rounded cone-shaped clamping parts (6) are evenly distributed on the pressure-equalizing positioning pillars (5), and the thickness of the inverted rounded cone-shaped clamping parts (6) is less than the thickness of the half silicon wafer (1).

2. The high-efficiency combined silicon steel sheet for transformer according to claim 1, characterized in that: The combined slot (3) is arranged in a "V" shape, and a V-shaped plug-in (10) is arranged at the end of the middle silicon wafer (2), and the V-shaped plug-in (10) is adapted to the combined slot (3).

3. The high-efficiency combined silicon steel sheet for transformer according to claim 2, characterized in that: The limiting angle pressure piece comprises an L-shaped slot (11) and an L-shaped angle plate (12) provided on the assembly base (4); a corner pressure block (13) is provided on the top of the L-shaped angle plate (12); The inner wall of the L-shaped slot (11) is provided with a locking bevel tooth groove, and the side wall of the L-shaped angle plate (12) is fixedly connected with a bevel tooth locking layer (14) adapted to the locking bevel tooth groove.

4. The high-efficiency combined silicon steel sheet for transformer according to claim 1, characterized in that: The translation drive member comprises a translation slide groove (19) provided on the assembly platform (7); a translation slider (18) located in the translation slide groove (19) is fixedly connected to the bottom of the assembly socket (8); and electric push rods (20) for pushing the translation slider (18) are provided on both sides of the assembly platform (7).

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