JPWO2017159163A1 - Amorphous transformer and iron core used therefor - Google Patents

Abstract

In particular, it is an object of the present invention to provide a core having an improved core strength as well as improved handling at the time of manufacture of an iron core used for an amorphous transformer for large capacity, and an amorphous transformer using the same. In order to solve the above-mentioned problem, for an amorphous transformer composed of a laminated block in which a silicon steel sheet is sandwiched between two or more laminates constituted by laminating a plurality of amorphous alloy ribbons and bonded and fixed by a coating agent A steel core and an amorphous transformer using it.

Description

  The present invention relates to a structure of an iron core for an amorphous transformer composed of an amorphous alloy ribbon.

  In general, transformers for large capacity use stacked iron cores made of grain-oriented silicon steel sheets, but due to the growing need for energy conservation, no-load loss is much lower than grain-oriented silicon steel sheets. In particular, there is a need for a transformer with a core structure made of a thin amorphous alloy ribbon.

  On the other hand, since the amorphous alloy ribbon is a very thin ribbon of about 25 μm, as a problem in manufacturing a laminated iron core for an amorphous transformer composed of an amorphous alloy ribbon, the handling property decreases due to insufficient strength of the material itself, There were shortcomings in the core strength required when the iron core was raised later, prolonged lamination work by increasing the number of laminated sheets, accuracy control of lamination and butting, etc., and there were problems in production in terms of lamination work and handling during work.

  As a background art of this technical field, there is JP-A-11-186082 (Patent Document 1). For the purpose of proposing a method for producing an amorphous iron core with improved work efficiency, Patent Document 1 uses a unit polymer formed by superposing a plurality of amorphous ribbons made of strip-shaped amorphous magnetic alloy foils. In a method for producing an amorphous iron core by forming leg portions and yoke portions by laminating unit polymers, the same number of amorphous magnetic alloy foil strips as the number of amorphous ribbons constituting the unit polymer are overlapped. A unit polymer forming step of forming the unit polymer by cutting a strip polymer made of a predetermined length, and shifting the position of the unit polymers sequentially formed in the unit polymer forming step. The unit polymer laminated block is formed by stacking and stacking the unit polymers constituting the laminated block in order from the top. Wherein forming the legs and the yoke portion is disclosed by laminating on a workbench taking.

Japanese Patent Application Laid-Open No. 11-186082

  In Patent Document 1, a unit polymer is formed in which a plurality of amorphous ribbons made of a strip-shaped amorphous magnetic alloy foil are used as a unit polymer, and the unit polymer is formed by stacking a plurality of polymers of amorphous ribbons. It is described that after the process is performed, an integration process for integrating the amorphous magnetic alloy foil constituting the formed unit polymer is performed. As a result, since the position of the amorphous ribbon does not shift when the unit polymer is handled, the work efficiency can be improved by eliminating the work of correcting the position of the amorphous ribbon, but the iron core strength is not considered. .

  An object of the present invention is to provide a core having an improved core strength and an amorphous transformer using the core, as well as improving the handleability at the time of manufacture of the core to be used in an amorphous transformer for large capacity.

  In order to solve the above-described problems, the present invention is, as an example, a laminated iron core for an amorphous transformer, which is composed of two or more laminated bodies formed by laminating a plurality of amorphous alloy ribbons. The steel core is composed of laminated blocks that are sandwiched between steel plates and bonded and fixed with a coating agent.

  ADVANTAGE OF THE INVENTION According to this invention, the handling core at the time of manufacture of a product core, and the product core which improved the core intensity | strength, and an amorphous transformer using the same can be provided.

1 is a structural diagram of an amorphous product core in Example 1. FIG. It is a top view of the leg part lamination block and yoke part lamination block of an amorphous product iron core in Example 2. FIG. It is a perspective view of the leg laminated block and yoke part laminated block of an amorphous product iron core in Example 3. FIG. It is a perspective view of the leg laminated block and yoke part laminated block of the amorphous product iron core in Example 4. FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  In this embodiment, a laminated iron core used for an amorphous transformer is a laminate in which a silicon steel sheet is sandwiched between two or more laminates formed by laminating a plurality of amorphous alloy ribbons and bonded and fixed by a coating agent or the like. It consists of blocks. Hereinafter, this embodiment will be described with reference to FIG.

  FIG. 1 is a structural example of a tripod amorphous core in this embodiment. In FIG. 1, (A) shows an amorphous iron core 105, which is a laminated block in which a silicon steel sheet 104 is sandwiched between laminated bodies 101 in which amorphous alloy ribbons that are amorphous materials are laminated, A plurality of yoke part laminated blocks 103 are combined. (B) shows the leg laminated block 102 of the amorphous product core 105, and (C) shows the yoke laminated block 103 of the amorphous product core 105.

  In FIG. 1B, a leg laminated block 102 is composed of two laminated bodies 101 and one silicon steel sheet 104, and the laminated body 101 is a rectangular amorphous alloy ribbon (not shown) cut to a predetermined size. Z)). That is, a silicon steel plate 104 is disposed at a portion where the two laminates 101 overlap, the silicon steel plate 104 is sandwiched between the two laminates 101, and is bonded and fixed by a coating agent (not shown) or the like to form the leg laminate block 102. Is configured.

  In FIG. 1C, the yoke part laminated block 103 is composed of three laminated bodies 101 and one silicon steel plate 104, and the laminated body 101 is an amorphous alloy ribbon (see FIG. (Not shown) are formed in a strip shape. That is, the yoke portion laminated block 103 is configured by sandwiching the silicon steel plate 104 between two or more laminated bodies 101 and bonding and fixing them with a coating agent (not shown).

  In this way, by arranging the silicon steel plate 104 between the laminates 101 of the leg laminated block 102 and the yoke part laminated block 103, the strength of the leg laminated block 102 and the yoke part laminated block 103 is improved. Yes. Further, the leg laminated block 102 and the yoke laminated block 103 are integrated by functioning as an adhesive member by application of the coating agent 106 and fixing. Thereby, the strength is further improved. In addition, an improvement in quietness can be expected by bonding and fixing.

  Instead of the silicon steel plate 104, a thin plate insulator having a strength such as a press board may be used. Silicon steel sheets are also called electromagnetic steel sheets. Laminated amorphous alloy ribbons using directional magnetic steel sheets that have increased magnetic permeability in a specific direction by biasing magnetic properties so that they are magnetized in a specific direction. A grain-oriented electrical steel sheet oriented in a direction different from the direction may be arranged.

  In addition, the application area of the coating agent 106 of the leg laminated block 102 and the yoke laminated block 103 is a laminated surface in a range excluding the stacked portion of the leg laminated block 102 and the yoke laminated block 103, It becomes possible not to be affected by adhesive fixation during the laminating operation.

  Note that the deterioration in characteristics due to the inclusion of the silicon steel sheet 104 in the product iron core is caused by increasing the number of the laminated layers 101 of the amorphous alloy ribbons constituting the leg laminated block 102 and the yoke laminated block 103. It is possible to suppress.

  Further, in this embodiment, as shown in FIG. 1 (A), one kind of the leg laminated block 102 shown in FIG. 1 (B) and one of the yoke part laminated blocks 103 shown in FIG. 1 (C). Amorphous iron core 105 can be configured with a total of two types, the number of members required for the stacking operation is small, and the stacking operation can be simplified.

  As described above, this embodiment is a laminated iron core for an amorphous transformer, in which a silicon steel sheet is sandwiched between two or more laminated bodies formed by laminating a plurality of amorphous alloy ribbons, and is fixed by adhesion with a coating agent. It is set as the structure comprised by the laminated block made.

  Also, a plurality of amorphous materials are laminated to form a laminate, and a silicon steel plate is sandwiched between the plurality of laminates, and the amorphous material laminate and the silicon steel plate are bonded to each other at the end face in the width direction to constitute a laminate block. In addition, a laminated iron core configured by combining a plurality of laminated blocks and an amorphous transformer provided with the same are provided.

  In this way, the laminated iron core is composed of a laminated body of amorphous alloy ribbon and silicon steel sheet, thereby improving the iron core strength, reducing the man-hours for laminating work, improving handling, and laminating and matching. Accuracy control is possible.

  In the present embodiment, the adhesion and fixing of the leg laminated block and the yoke laminated block and the additional condition of the number of laminated layers will be described.

  FIG. 2 is a plan view of the leg laminated block and the yoke laminated block in the present embodiment. 2A shows the configuration of the leg laminated block 102, and FIG. 2B shows the configuration of the yoke laminated block 103. FIG.

  2A, the right side is a plan view seen from the cross-sectional direction of the laminated body 101 perpendicular to the magnetic path direction of the leg laminated block 102 (see FIG. 1B), and the left is the leg laminated block 102. The top view seen from the direction perpendicular | vertical to the width direction (refer FIG.1 (B)) is shown.

  As shown in FIG. 2 (A), in the leg laminated block 102, the laminated surface of the laminated body 101 of the amorphous alloy ribbon 107 and the silicon steel sheet 104 and the laminated surface which is the end face in the width direction are set as the adhesive fixing range. That is, by applying the coating agent 106 between the laminated body 101 and the silicon steel sheet 104 and on the laminated surface, it functions as an adhesive layer and adheres and fixes the leg laminated block.

  2B, similarly, the right side is a plan view seen from the cross-sectional direction of the laminated body 101 perpendicular to the magnetic path direction of the yoke section laminated block 103 (see FIG. 1C), and the left side is FIG. 4A is a plan view seen from a direction perpendicular to the width direction (see FIG. 1C) of the yoke part laminated block 103.

  As shown in FIG. 2 (B), in the yoke portion laminated block 103, only the laminated surface which is the end face in the width direction is bonded without fixing the laminated body 101 of the amorphous alloy ribbon 107 and the laminated silicon steel sheet 104. Adhesive fixing range. That is, the coating agent 106 is applied only to the laminated surface, and functions as an adhesive layer to bond and fix the yoke part laminated block. In addition, the number of laminated layers 101 of the amorphous alloy ribbons 107 constituting the yoke layer laminated block 103 is equal to the number of the amorphous alloy ribbons 107 corresponding to the thickness of the coating agent 106 between the layers applied at the legs. The structure is increased.

  Since the core leg is affected by the mechanical force transmitted from the winding deformation at the time of short circuit, it is necessary to increase the strength. The method of increasing the strength by attaching a fixing jig to the outside of the iron core leads to an increase in the coil size and the transformer content size in the iron core leg, so that the strength of the iron core itself is increased by applying the coating agent 106 between the layers. Increase. On the other hand, in the core yoke part, the magnetic flux density is reduced and the characteristics are improved by increasing the number of the amorphous alloy ribbon 107 in the core yoke part in accordance with the increase in the thickness of the core leg part due to the coating agent. Can also be realized.

  As described above, this embodiment is a laminated iron core for an amorphous transformer, in which a silicon steel sheet is sandwiched between two or more laminated bodies formed by laminating a plurality of amorphous alloy ribbons, and is fixed by adhesion with a coating agent. In the laminated block of the core part, the laminated surface that is the end face in the width direction of the laminated block and between the laminated bodies and the silicon steel sheet In the laminated block of the yoke part of the stacked core, the laminated surface is bonded and fixed without bonding and fixing the laminated parts, and the laminated block of the yoke part is equal to the thickness of the adhesive layer between the laminated layers of the leg parts. The number of amorphous alloy ribbons to be laminated is increased so that the number of amorphous alloy ribbons constituting the iron core of the yoke portion is larger than that of the leg iron core.

  Also, a plurality of amorphous materials are laminated to form a laminate, and a silicon steel plate is sandwiched between the plurality of laminates, and the amorphous material laminate and the silicon steel plate are bonded to each other at the end face in the width direction to constitute a laminate block. In addition, a laminated iron core configured by combining a plurality of laminated blocks and an amorphous transformer provided with the same are provided.

  As a result, the adhesion and fixation of the leg lamination block and the yoke lamination block is at least by fixing the lamination surface, which is the end face in the width direction, to improve the iron core strength, reduce the man-hours of the lamination work, and improve the handleability. Therefore, it is possible to control the accuracy in the lamination and the butt. Further, if necessary, the strength of the iron core can be further improved by adhering and fixing between the laminates of the laminate and the silicon steel sheet.

  In this example, the shape of the laminated body of the leg part laminated block and the yoke part laminated block and the joint end of the silicon steel sheet will be described.

  FIG. 3 is a perspective view of the leg laminated block and the yoke laminated block of the amorphous iron core in the present embodiment. In FIG. 3, (A) shows the configuration of the leg laminated block, and (B) shows the configuration of the yoke laminated block.

  3A is different from FIG. 1B in that the shape of the joining end of the silicon steel plate is different. That is, the laminated body 101 of the amorphous alloy ribbon 107 has a strip shape, whereas the silicon steel sheet has a frame shape 104-1 having a shape of 45 degrees.

  As shown in FIG. 3A, the leg laminated block 102 has three types, 102-1, 102, and 102-2, and 102-1 and 102-2 have a frame shape at the joint end. A leg laminated block having a certain silicon steel sheet 104-1. On the other hand, reference numeral 102 denotes a strip shape which is disposed only in a portion where the silicon steel plate is sandwiched between the laminates 101 as in FIG. The leg laminated block 102 is arranged at the center leg of the amorphous core 105 shown in FIG. 1A, and the leg laminated blocks 102-1 and 102-2 are peripheral legs that form the corners of the amorphous core 105. Be placed.

  3 (B) is different from FIG. 1 (C) in that the yoke part laminated block 103- has a frame shape 104-2 in which the shape of the joining end of the silicon steel sheet is 45 degrees. The point is 1.

  As described above, according to the present embodiment, the laminated body 101 is formed in a strip shape and the silicon steel plate 104 is formed in a frame shape, so that the leg laminated block and the yoke laminated layer block can be assembled by sliding. There is an advantage that becomes unnecessary. In addition, since the joining ends of the silicon steel plates 104-1 and 104-2 are 45 degrees, the linear path of the magnetic path that passes through the silicon steel plates becomes long, and there is an advantage that the characteristics are improved.

  In the present embodiment, a laminated body of leg laminated blocks and yoke part laminated blocks and other shapes of joining ends of silicon steel plates will be described.

  FIG. 4 is a perspective view of the leg laminated block and the yoke laminated block of the amorphous iron core in the present embodiment. In FIG. 4, (A) shows the configuration of the leg laminated block, and (B) shows the configuration of the yoke laminated block.

  4A is different from FIG. 1B in that the shape of the joining end of the stacked body is different. That is, the laminate has a frame shape 101-1 having a 45-degree shape.

  As shown in FIG. 4A, the leg laminated block has two types, 102 and 102-3, and 102-3 includes a laminate 101-1 having a frame-shaped joint end, and a strip. It is a leg lamination block which has the silicon steel plate 104-3 which is a shape. The silicon steel plate 104-3 is sandwiched between the laminated bodies 101-1, and has a strip shape that is hidden inside. On the other hand, reference numeral 102 denotes a strip shape which is disposed only in a portion where the silicon steel plate is sandwiched between the laminates 101, as in FIG. The leg laminated block 102 is disposed at the center leg of the amorphous core 105 shown in FIG. 1A, and the leg laminated block 102-3 is disposed at the peripheral leg forming the corner of the amorphous core 105.

  4 (B) is different from FIG. 1 (C) in that the laminated body has a frame shape 101-2 in which the shape of the joining end is 45 degrees, and the silicon steel sheet has a strip shape. It is a point which is the yoke part lamination | stacking block 103-2 which has 104-4 protrude | jumped out from the junction end of the laminated body 101-2.

  As described above, the laminated body is formed into a frame shape, the silicon steel plate is formed into a strip shape, and the silicon steel plate protrudes from the joining end of the laminated body, thereby arranging the leg laminated blocks 102 and 102-3. When inserting the yoke part laminated block 103-2 from the laminated surface side later, the silicon steel sheet 104-4 of the yoke part laminated block 103-2 protrudes from the joining end. The portion serves as a guide for assisting the insertion work, the insertion position can be easily adjusted, and workability can be improved.

  Further, since the joining ends of the laminated bodies 101-1 and 101-2 of the amorphous alloy ribbon 107 are 45 degrees, there is an advantage that the linear path of the magnetic path passing through the laminated body becomes long and the characteristics are improved.

  Although the embodiments have been described above, the present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. For example, in Examples 3 and 4, it has been described that only one of the laminate or the silicon steel plate has a frame shape at the joint end, but the shape of the laminate and the joint end of the silicon steel plate is You may comprise by the combination of strip shape or frame shape.

  Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. For example, in each embodiment, a thin plate insulator having strength such as a press board may be used instead of the silicon steel plate.

101: Laminated body, 102, 102-1, 102-2, 102-3: Leg laminated block, 103, 103-1, 103-2: yoke laminated block, 104, 104-1, 104-2, 104-3, 104-4: Silicon steel sheet, 105: Amorphous iron core, 106: Coating agent, 107: Amorphous alloy ribbon

Claims (9)

A steel core for amorphous transformers,
A laminated iron core comprising a laminated block in which a silicon steel sheet is sandwiched between two or more laminated bodies constituted by laminating a plurality of amorphous alloy ribbons and bonded and fixed by a coating agent. The iron core according to claim 1,
The range bonded and fixed by the coating agent is a laminated surface that is an end surface in the width direction of the laminated block and the laminated steel block in the laminated block of the leg of the laminated iron core, and the yoke of the laminated core. In the laminated block of the part, the laminated surface is bonded and fixed without bonding and fixing between the stacked layers,
Increasing the number of amorphous alloy ribbons to be laminated in the yoke layer lamination block by the thickness of the adhesive layer between the lamination blocks of the leg portions, and the amorphous alloy ribbon constituting the iron core of the yoke portion A stacked iron core characterized in that the number of sheets is larger than that of the legs. The iron core according to claim 1 or 2,
A laminated iron core characterized in that the amorphous alloy ribbon laminated body constituting the laminated block and the shape of the joining end of the silicon steel sheet are constituted by a combination of a strip shape or a frame shape. The iron core according to claim 3,
The laminated end block of the amorphous alloy ribbon constituting the laminated block has a frame shape, the shape of the bonded end of the silicon steel sheet is a strip shape, and the laminated block of the yoke part of the stacked core A laminated iron core characterized in that the silicon steel sheet constituting the structure protrudes from the joint end of the laminate. The product core according to any one of claims 1 to 4,
The laminated core is constituted by a press board instead of the silicon steel plate.   An amorphous transformer comprising the product core according to any one of claims 1 to 5. An amorphous transformer having a product core composed of a plurality of laminated blocks,
The laminated block has a first laminated body and a second laminated body configured by laminating a plurality of amorphous alloy ribbons,
A directional electrical steel sheet oriented in a direction different from the laminating direction of the amorphous alloy ribbon is disposed between the first laminated body and the second laminated body. vessel. The amorphous transformer according to claim 7,
The grain-oriented electrical steel sheet is an amorphous transformer characterized in that the first laminated body and the second laminated body are arranged via an adhesive member at a portion where the first laminated body and the second laminated body overlap. Laminate multiple amorphous materials to make a laminate,
Sandwiching a silicon steel plate between the laminates,
The laminated body of the amorphous material and the silicon steel plate are bonded at the end face in the width direction to constitute a laminated block,
A laminated iron core constituted by combining a plurality of the laminated blocks, and an amorphous transformer provided with the same.

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