Efficient combined silicon steel sheet for transformer

Abstract

The invention discloses an efficient combined type silicon steel sheet for a transformer, and belongs to the technical field of transformer magnetic cores, the efficient combined type silicon steel sheet comprises a transformer mounting support, a combined type silicon steel sheet and an assembly part for efficiently assembling the combined type silicon steel sheet, the combined type silicon steel sheet is composed of two half silicon wafers which are oppositely arranged, and a middle silicon wafer is arranged on the half silicon wafer located on one side; and the half silicon wafer on the other side is provided with a combined slot for locking the middle silicon wafer. The silicon steel sheets are designed, in the assembling process, the half silicon sheets arranged in a half-and-half mode are pre-assembled through the assembling positioning openings in the assembling cutting bases, and then the assembled half silicon steel sheets are in staggered butt joint; after the half silicon wafers are in staggered butt joint, downward pressure is applied to the butt joint openings of the half silicon wafers through the inverted circular truncated cone type clamping pieces arranged on the pressure equalizing positioning columns, close attachment of the adjacent half silicon wafers is achieved, and therefore the assembling efficiency is remarkably improved on the premise that the assembling quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of transformer cores, and in particular to a high-efficiency combined silicon steel sheet for a transformer. Background Art

[0002] Transformer silicon steel sheets are key materials for manufacturing transformer cores. They are 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 due to their excellent magnetic properties and low loss characteristics.

[0003] Silicon steel sheet assembly is a key step in transformer manufacturing, which directly affects the performance and efficiency of the transformer. The current structure of silicon steel sheets requires the gradual superposition of silicon steel sheets, and it is also necessary to ensure that the positioning between adjacent silicon steel sheets is accurate, tightly fitted to avoid gaps, which makes the processing efficiency very low, and the silicon steel sheet area required for large transformers is large. The current silicon steel sheet structure is compressed by bolts or pull rods after assembly, and the compression devices located on all sides will apply inward pressure to the silicon steel sheet. The existence of this stress will cause uneven stress distribution of the silicon steel sheet, and stress concentration will have a negative impact on the magnetic properties of the silicon steel sheet. Based on this, a high-efficiency 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 a high-efficiency combined silicon steel sheet for transformers.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: 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, wherein the combined silicon steel sheet is composed of two half silicon sheets arranged opposite to each other, a middle silicon sheet is arranged on the half silicon sheet located on one side, and a combined slot for locking the middle silicon sheet is opened on the half silicon sheet located on the other side; The transformer mounting support comprises an assembly base, wherein the four corners of the assembly base are provided with limiting angle pressure pieces for applying pressure to the combined silicon steel sheets, the assembly base is threadedly connected with a pressure equalizing positioning column, and the pressure equalizing positioning column is provided with a rounded table-type clamp for fastening and connecting the half silicon sheets; The assembly part comprises an assembly table, which is connected to two assembly sockets arranged opposite to each other through a translation driving part, and the assembly sockets are provided with assembly positioning openings for inserting and positioning half silicon wafers.

[0006] Preferably, the combined slot is arranged in a "V" shape, and a V-shaped plug-in is arranged at the end of the middle silicon wafer, and the V-shaped plug-in is adapted to the combined slot.

[0007] Preferably, the limiting angle pressure piece comprises an L-shaped slot and an L-shaped angle plate provided on the assembly base, and an angle pressure block is provided on the top of the L-shaped angle plate; The inner wall of the L-shaped slot is provided with a locking oblique tooth groove, and the side wall of the L-shaped angle plate is fixedly connected with an oblique tooth locking layer adapted to the locking oblique tooth groove.

[0008] Preferably, a hollow opening is provided in the pressure-equalizing positioning column, a threaded pressure column is arranged in the hollow opening, the threaded pressure column is threadedly connected to the assembly base, and a knob pressure plate is arranged on the top of the threaded pressure column.

[0009] Preferably, the half silicon wafer is in a "C" shape, and a half bayonet with a larger upper portion and a smaller lower portion is provided at the end of the half silicon wafer. The half bayonet on the two half silicon wafers forms a circle and is compatible with the inverted rounded table-type clamp.

[0010] Preferably, the frustum-cone-shaped clamps are evenly distributed on the pressure-equalizing positioning columns, and the thickness of the frustum-cone-shaped clamps is less than the thickness of half a silicon wafer.

[0011] Preferably, the translation drive member includes a translation slide groove opened on the assembly table, the bottom of the assembly socket is fixedly connected with a translation slider located in the translation slide groove, and electric push rods for pushing the translation slider are arranged on both sides of the assembly table.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention designs silicon steel sheets. During assembly, the half silicon sheets are pre-assembled through the assembly positioning openings on the assembly sockets, and then the assembled half silicon steel sheets are staggered and docked. After the staggered docking, downward pressure is applied to the docking interfaces of the half silicon sheets through the inverted rounded table-type clamps arranged on the pressure-equalizing positioning columns, so that adjacent half silicon sheets are closely fitted. Therefore, the assembly efficiency is significantly improved while ensuring the assembly quality.

[0013] 2. The present invention applies the same downward pressure by L-shaped angle plates arranged around the silicon steel sheet, and generates inward wrapping pressure on the silicon steel sheet. By designing the half silicon sheet, the central silicon sheet shares the extrusion force with the combined slot through the V-shaped plug-in, and the same lateral stress is applied to each silicon sheet through the rounded table clamp on the pressure-equalizing positioning column. The lateral stress will act on the silicon steel sheet together with the inward pressure applied by the fasteners on the surrounding areas, thereby ensuring that the pressure at each position is evenly distributed, avoiding the situation where concentrated stress and uneven stress cause poor magnetic properties of the silicon steel sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a combined silicon steel sheet in a high-efficiency combined silicon steel sheet for a transformer proposed by the present invention; Figure 2A schematic diagram of the assembly structure of a combined silicon steel sheet and a transformer mounting support in a high-efficiency combined silicon steel sheet for a transformer proposed by the present invention; Figure 3 This is a schematic diagram of the structure of two and a half silicon sheets in a high-efficiency combined silicon steel sheet for a transformer proposed by the present invention; Figure 4 This is a schematic cross-sectional structure diagram of a voltage-equalizing positioning column and a rounded table-type clamp in a high-efficiency combined silicon steel sheet for a transformer proposed by the present invention; Figure 5 This is a schematic structural diagram of an assembly of high-efficiency combined silicon steel sheets for transformers proposed by the present invention; Figure 6 for Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0015] In the figure: 1. Half silicon wafer; 2. Center silicon wafer; 3. Combination slot; 4. Assembly base; 5. Pressure-equalizing positioning column; 6. Rounded table clamp; 7. Assembly table; 8. Assembly socket; 9. Assembly positioning port; 10. V-shaped plug-in; 11. L-shaped slot; 12. L-shaped angle plate; 13. Angle pressure block; 14. Bevel gear locking layer; 15. Threaded pressure column; 16. Knob pressure plate; 17. Half bayonet; 18. Translation slider; 19. Translation slide groove; 20. Electric push rod. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] Example, see Figures 1 to 6 A high-efficiency combined silicon steel sheet for a transformer includes a transformer mounting support, a combined silicon steel sheet and an assembly for efficiently assembling the combined silicon steel sheet. The combined silicon steel sheet consists of two half silicon sheets 1 arranged opposite to each other, and the half silicon sheets 1 are staggered.

[0020] A middle silicon wafer 2 is arranged on the half silicon wafer 1 on one side, and a combination slot 3 for locking the middle silicon wafer 2 is provided on the half silicon wafer 1 on the other side. The combination 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 combination slot 3; It should be noted that after the two relatively disposed half silicon wafers 1 are assembled, the V-shaped plug 10 is in the assembly slot 3 and is constantly subjected to pressure from the assembly slot 3 , that is, after the V-shaped plug 10 and the assembly slot 3 are assembled, there is extrusion stress between the two.

[0021] The transformer mounting support includes an assembly base 4, and the four corners of the assembly base 4 are provided with limiting angle pressure pieces for applying pressure to the combined silicon steel sheets. Furthermore, the limiting angle pressure piece includes an L-shaped slot 11 and an L-shaped angle plate 12 opened on the assembly base 4, and an angle pressure block 13 is provided on the top of the L-shaped angle plate 12; wherein the L-shaped angle plate 12 wraps the four corners of the assembled combined silicon steel sheets to ensure the installation effect of the combined silicon steel sheets, and the angle pressure block 13 applies downward pressure to the four corners of the assembled silicon steel sheets to ensure that the pressure applied by the limiting angle pressure piece is the same.

[0022] A locking bevel groove is provided on the inner wall of the L-shaped slot 11, and a bevel locking layer 14 which is adapted to the locking bevel groove is fixedly connected to the side wall of the L-shaped angle plate 12. The cooperation between the locking bevel groove and the bevel locking layer 14 can ensure that after the L-shaped angle plate 12 is inserted into the L-shaped slot 11, the two can be locked. The same setting of the locking bevel groove and the bevel locking layer 14 can ensure that the pressure applied to the four corners of the silicon steel sheet by the limiting angle pressure piece is the same.

[0023] A pressure-equalizing positioning column 5 is threadedly connected to the assembly base 4, and a chamfered table-type clamp 6 is arranged on the pressure-equalizing positioning column 5 for fastening the half silicon wafer 1. A hollow opening is opened in the pressure-equalizing positioning column 5, and 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 knob pressure plate 16 can be rotated by a tool to thread the threaded pressure column 15 and fasten the assembly base 4. When fastening, pressure is applied to the pressure-equalizing positioning column 5, which drives the pressure-equalizing positioning column 5 and the chamfered table-type clamp 6 thereon to press downward, thereby applying downward pressure to the silicon steel sheet.

[0024] Furthermore, the half silicon wafer 1 is in a "C" shape, and a half-slot 17 with a larger upper part and a smaller lower part is provided at the end of the half silicon wafer 1. The half-slots 17 on the two half silicon wafers 1 form a circle and are compatible with the inverted cone-shaped clamps 6. The inverted cone-shaped clamps 6 are evenly distributed on the pressure-equalizing positioning columns 5, and the thickness of the inverted cone-shaped clamps 6 is less than the thickness of the half silicon wafer 1.

[0025] It is worth noting that the inverted cone type clamp 6 will move downward under the downward drive of the pressure-equalizing positioning column 5. The downward movement of the inverted cone type clamp 6 will squeeze the semi-clamps 17 on both sides that are adapted thereto. The setting of the inverted cone structure can ensure the generation of inclined stress. At this time, the stress component can be divided into lateral stress and downward extrusion force. The downward extrusion force can ensure that the two adjacent silicon steel sheets can be in close contact. The lateral stress will act on the silicon steel sheet together with the inward pressure exerted by the surrounding fasteners, thereby ensuring that the pressure at each position is evenly distributed, avoiding the situation where concentrated stress and uneven stress cause poor magnetic properties of the silicon steel sheet.

[0026] The assembly part includes an assembly table 7, which is connected to two relatively arranged assembly sockets 8 through a translation drive part. The assembly sockets 8 are provided with an assembly positioning opening 9 for positioning the half silicon wafer 1 for insertion, wherein the assembly positioning opening 9 is composed of a rectangular opening whose interior is adapted to the size of the half silicon wafer 1 and a guide opening opened at the end of the rectangular opening. The setting of the guide opening can facilitate the insertion of the half silicon wafer 1.

[0027] The translation drive member includes a translation slide 19 provided on the assembly table 7, a translation slider 18 located in the translation slide 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 table 7. The electric push rods 20 are prior art and will not be described in detail here; During assembly, multiple half silicon wafers 1 can be inserted into the assembly positioning opening 9 first, and then the half silicon wafers 1 on the two assembly sockets 8 are plugged into place, and then flipped 90 degrees, and then the half silicon wafers 1 on the two assembly sockets 8 are assembled with the magnetic core, which can significantly improve the assembly efficiency of the silicon steel sheet. The present invention pre-assembles the half silicon wafers 1 set in half through the assembly positioning opening 9 on the assembly socket 8, and then the assembled half groups of silicon steel sheets are staggered and docked. At this time, the relatively arranged half silicon wafers 1 are not in a state of close contact, and the shear stress between the two is very small when they are in contact, so the staggered docking of the two groups of silicon steel sheets can be achieved. After docking, the inverted table-type clamp 6 on the pressure-equalizing positioning column 5 is used to apply pressure to lock it. Compared with the traditional stacking method, the assembly efficiency can be greatly increased.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which 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 position 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 a rounded table-type clamping piece (6) for fastening and connecting the half silicon sheet (1); The assembly component comprises an assembly table (7), wherein the assembly table (7) is connected to two relatively arranged assembly sockets (8) via a translation drive component, and the assembly sockets (8) are provided with assembly positioning openings (9) for positioning the half silicon wafer (1) for insertion.

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 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).

5. The high-efficiency combined silicon steel sheet for transformer according to claim 1, characterized in that: The half silicon wafer (1) is in a "C" shape, and a half clip (17) with a larger top and smaller bottom is provided at the end of the half silicon wafer (1). The half clips (17) on the two half silicon wafers (1) form a circle and are compatible with the rounded table-type clip (6).

6. The high-efficiency combined silicon steel sheet for transformer according to claim 1, characterized in that: 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).

7. 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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