CN112802667A - Three-dimensional wound core, transformer thereof and assembling method of transformer - Google Patents
Three-dimensional wound core, transformer thereof and assembling method of transformer Download PDFInfo
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- CN112802667A CN112802667A CN202110120228.4A CN202110120228A CN112802667A CN 112802667 A CN112802667 A CN 112802667A CN 202110120228 A CN202110120228 A CN 202110120228A CN 112802667 A CN112802667 A CN 112802667A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 327
- 239000010410 layer Substances 0.000 claims description 28
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 238000005267 amalgamation Methods 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims description 2
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- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 108010015780 Viral Core Proteins Proteins 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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Abstract
A three-dimensional wound core comprises three single-frame iron cores (1), wherein each layer of magnetic conductive sheets (10) of each single-frame iron core (1) is provided with a fracture seam (100), the fracture seams (100) on a plurality of adjacent layers of magnetic conductive sheets (10) of each single-frame iron core (1) are formed from outside to inside and are sequentially combined into a first seam part (101), a second seam part (102) and a third seam part (103), and the first seam part (101) is positioned outside an upper yoke (11) or a lower yoke (12); the second seam part (102) is positioned in the middle of the left iron core column and the right iron core column at the same time; the third seam part (103) is located inside the upper yoke (11) or the lower yoke (12). The application also discloses a transformer with the three-dimensional wound core and an assembly method of the transformer. Compared with the prior art, the assembling operation is convenient while the mechanical strength can be improved and the loss is reduced.
Description
Technical Field
The invention belongs to the technical field of transformers, and particularly relates to a three-dimensional wound core, a transformer with the three-dimensional wound core and an assembly method of the transformer.
Background
The three-dimensional wound core transformer is a transformer with a new structure, and has the advantages of three-phase balance, low no-load loss, low noise, low manufacturing cost and the like, so that the three-dimensional wound core transformer is widely applied.
The two major core components of the three-dimensional wound core transformer are a three-dimensional wound core and high and low voltage coils. The three-dimensional wound iron core is mainly formed by splicing three single-frame iron cores which have the same structure and are continuously wound by silicon steel sheets.
The existing three-dimensional wound iron core technology can be divided into two structural forms of a closed structure and an open structure, wherein the closed three-dimensional wound iron core is a single-frame iron core with a semicircular section which is formed by continuously winding silicon steel strips, and then single-frame iron core columns of the three single-frame iron cores with semicircular sections are spliced pairwise to form a triangular three-dimensional wound iron core with a circular section; the coil of the closed three-dimensional wound core is wound on the core column of the wound core, and the core and the coil are required to have enough process dimensions during design, so that the filling rate of the transformer is reduced, and the material cost is directly increased; meanwhile, the gap between the coil and the iron core is large, so that the inner side of the coil cannot be tightly supported, and the short-circuit resistance is poor; and the coil winding is troublesome, the manufacturability is poor, the manufacturing cost is high, the production efficiency is low, and the development of the three-dimensional wound core transformer is restricted.
The open three-dimensional wound iron core belongs to a detachable iron core, and each single-frame iron core of the open three-dimensional wound iron core is provided with an opening for the single-frame iron core to open, no matter what type of single-frame iron core section is adopted, the openings of the single-frame iron core in the prior art are divided into two types, the first type is a single-opening structure, and as shown in fig. 1 and fig. 2, only one group of fracture joints 100' is arranged at the yoke part of the single-frame iron core; the single-frame iron core with the single-opening structure has the advantages of low structural loss and high mechanical strength, but a large assembly gap is required between the single-frame iron core and the coil. The second is a double-opening structure, as shown in fig. 3 and 4, two groups of fracture joints 100' are arranged on the core legs at the left side and the right side of each single-frame core respectively; the single-frame iron core with the double-opening structure is convenient to insert and simple to operate, but the single-frame iron core is low in mechanical strength and high in loss.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a three-dimensional wound core that can improve mechanical strength, reduce loss, and facilitate assembly operation, in view of the current situation of the prior art.
The second technical problem to be solved by the present invention is to provide a transformer having the above-mentioned three-dimensional wound core.
The third technical problem to be solved by the present invention is to provide an assembly method of the transformer.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a three-dimensional book unshakable in one's determination, is including three single frame iron core, and each single frame iron core is by magnetic conduction piece from interior to exterior coiling one-tenth has upper yoke, lower yoke and connects the frame type structure of the left and right iron core post of upper and lower yoke, and two liang of amalgamations of iron core post that each single frame iron core constitute the iron core cylinder, and each layer magnetic conduction piece that each single frame iron core has the fracture seam that enables single frame iron core to open, its characterized in that: fracture seams on a plurality of adjacent layers of magnetic conductive sheets of each single-frame iron core are formed from outside to inside to be sequentially combined into a first seam part, a second seam part and a third seam part, wherein the first seam part is positioned outside the upper yoke or the lower yoke so as to form a single-opening structure opened by each magnetic conductive sheet positioned outside in each single-frame iron core; the second joint part is positioned in the middle of the left iron core column and the right iron core column of each single-frame iron core simultaneously so as to form a double-opening structure for opening each magnetic conductive sheet in the middle of each single-frame iron core; the third joint part is positioned in the upper yoke or the lower yoke to form a single-opening structure opened by each magnetic conductive sheet in each single-frame iron core.
The first seam part and the third seam part can be positioned at the same side of the iron yoke or at two sides of the iron yoke respectively, furthermore, the first seam part is positioned at the outer part of the upper yoke, and the third seam part is positioned at the inner part of the upper yoke; alternatively, the first seam portion is located outside the lower yoke, and the third seam portion is located inside the upper yoke.
In order to facilitate the opening and overlapping of each joint part, further, fracture joints on the magnetic conductive sheets of adjacent layers corresponding to the first joint part are staggered and distributed in a step shape; fracture seams on the magnetic conductive sheets of the adjacent layers corresponding to the second seam parts are staggered with each other and distributed in a step shape; fracture seams on the adjacent single-layer magnetic conductive sheets corresponding to the third seam parts are staggered with each other and distributed in a step shape.
Furthermore, at least two groups of second joint parts which are positioned in the middle parts of the left iron core column and the right iron core column are distributed inside and outside.
The technical solution adopted by the present invention to solve the first technical problem may be: the utility model provides a three-dimensional book unshakable in one's determination, including three single frame iron core, each single frame iron core is by magnetic conduction piece from interior to exterior coiling to have upper yoke, lower yoke and connect the left iron leg, the frame type structure of right iron leg of upper and lower yoke, and two liang of amalgamations of iron leg of each single frame iron core constitute the iron leg, and each layer magnetic conduction piece of each single frame iron core has the fracture seam that enables single frame iron core to open, its characterized in that: fracture seams on a plurality of adjacent layers of magnetic conducting sheets of each single-frame iron core are formed from outside to inside to sequentially form a second seam part and a third seam part; the second joint part is positioned outside the left and right iron core columns of each single-frame iron core simultaneously so as to form a double-opening structure for opening each magnetic conductive sheet positioned outside in each single-frame iron core; the third joint part is positioned in the upper yoke or the lower yoke to form a single-opening structure opened by each magnetic conductive sheet in each single-frame iron core.
In each of the above schemes, the cross section of the core cylinder is circular, elliptical, fan-shaped or polygonal.
The technical scheme adopted by the invention for solving the second technical problem is as follows: the transformer with the three-dimensional wound core is characterized in that: the iron core is characterized by also comprising three groups of coils, wherein each group of coils is sleeved on the corresponding iron core column.
Furthermore, each group of coils comprises a primary coil, a main channel insulator and a secondary coil which are sequentially arranged from inside to outside; the cross section shape of each group of coils is matched with the cross section shape of the corresponding iron core cylinder.
The technical scheme adopted by the invention for solving the third technical problem is as follows: a method for assembling a transformer as described above, characterized by the steps of:
firstly, placing a coil: taking three coils and placing the three coils on an assembly table, wherein the three coils are distributed in a triangular manner;
opening the first single-frame iron core: firstly, opening a first joint part in the single-frame iron core, then pulling out the upper part or the lower part of the local single-frame iron core corresponding to a second joint part to realize the opening of the second joint part, and then opening a third joint part;
thirdly, assembling the coil and the first single-frame iron core: inserting the left and right iron core columns of the opened first single-frame iron core into the first and second coils respectively, then closing a third joint part of the single-frame iron core, inserting the upper part and the lower part of the local single-frame iron core corresponding to the second joint part, and closing the first joint part to finish the assembly of the first single-frame iron core and the coils;
and fourthly, sequentially assembling a second single-frame iron core and a third single-frame iron core according to the method of the second step and the method of the third step, wherein the left iron core column and the right iron core column of the second single-frame iron core are respectively inserted into the second coil and the third coil, and the left iron core column and the right iron core column of the third single-frame iron core are respectively inserted into the third coil and the first coil.
Further, each coil in the first step is horizontally placed on the assembly table, and the central axis of each coil is horizontally arranged.
The technical solution adopted by the present invention to solve the third technical problem may further be: a method for assembling a transformer as described above, characterized by the steps of:
firstly, placing a single-frame iron core: taking the three single-frame iron cores and placing the three single-frame iron cores on an assembly table, wherein iron core columns of the three single-frame iron cores are spliced in pairs;
secondly, opening each single-frame iron core: opening a first joint part in the first single-frame iron core, then pulling out the upper part or the lower part of the local single-frame iron core corresponding to the second joint part to realize the opening of the second joint part, and then opening a third joint part, namely opening the first single-frame iron core; then opening a second single-frame iron core and a third single-frame iron core according to the method of the step;
thirdly, assembling a coil: taking three coils and respectively sleeving iron core columns of the three single-frame iron cores, wherein the iron core columns are formed by splicing every two iron core columns;
fourthly, closing each single-frame iron core: closing a third joint part in the first single-frame iron core, splicing the upper part and the lower part of the local single-frame iron core corresponding to the second joint part to realize the closing of the second joint part, and closing the first joint part, namely closing the first single-frame iron core; the second and third single-framed cores are then closed according to the method of this step.
Further, each single-frame iron core in the first step is vertically placed on an assembly table.
The technical solution adopted by the present invention to solve the third technical problem may further be: a method for assembling a transformer as described above, characterized by the steps of:
firstly, placing a coil: taking three coils and placing the three coils on an assembly table, wherein the three coils are distributed in a triangular manner;
opening the first single-frame iron core: the upper part or the lower part of the local single-frame iron core corresponding to the second joint part is pulled out to realize the opening of the second joint part, and then the third joint part is opened;
thirdly, assembling the coil and the first single-frame iron core: inserting the left and right iron core columns of the opened first single-frame iron core into the first and second coils respectively, then closing a third joint part of the single-frame iron core, and inserting the upper part and the lower part of a local single-frame iron core corresponding to the second joint part in an inserting manner, namely completing the assembly of the first single-frame iron core and the coils;
and fourthly, sequentially assembling a second single-frame iron core and a third single-frame iron core according to the method of the second step and the method of the third step, wherein the left iron core column and the right iron core column of the second single-frame iron core are respectively inserted into the second coil and the third coil, and the left iron core column and the right iron core column of the third single-frame iron core are respectively inserted into the third coil and the first coil.
The technical solution adopted by the present invention to solve the third technical problem may further be: a method for assembling a transformer as described above, characterized by the steps of:
firstly, placing a single-frame iron core: taking the three single-frame iron cores and placing the three single-frame iron cores on an assembly table, wherein iron core columns of the three single-frame iron cores are spliced in pairs;
secondly, opening each single-frame iron core: the upper part or the lower part of a local single-frame iron core corresponding to the second joint part in the first single-frame iron core is pulled out to realize the opening of the second joint part, and then the third joint part is opened, namely the first single-frame iron core is opened; then opening a second single-frame iron core and a third single-frame iron core in sequence according to the method of the step;
thirdly, assembling a coil: taking three coils and respectively sleeving iron core columns of the three single-frame iron cores, wherein the iron core columns are formed by splicing every two iron core columns;
fourthly, closing each single-frame iron core: closing a third joint part in the first single-frame iron core, and then inserting the upper part and the lower part of the local single-frame iron core corresponding to the second joint part to realize the closing of the second joint part, namely closing the first single-frame iron core; and then closing the second single-frame iron core and the third single-frame iron core in sequence according to the method of the step.
Compared with the prior art, the invention has the advantages that: the iron core is provided with the first joint part, the second joint part and the third joint part, the first joint part and the third joint part are designed into a single-opening structure skillfully, the mechanical strength is high, the second joint part is of a double-opening structure, the splicing is convenient, the third joint part and the first joint part are respectively positioned on the inner side and the outer side of the second joint part and are respectively positioned on different parts of a single-frame iron core, and therefore the part with weak mechanical strength is tightly wrapped in the third joint part and the first joint part, so that the iron core has high mechanical strength and is convenient to assemble;
in addition, the fracture seam is divided into three seam parts, so that the number of layers of the magnetic conductive sheet corresponding to each seam part is reduced, and each seam part can be opened or closed easily and conveniently; for the joint part of the single-opening structure, the opening angle of the magnetic conductive sheet can be obviously increased, so that the coil is more convenient to assemble; thereby reducing the required assembly gap between the iron core and the coil; and to the seam part of two open structure, be convenient for more peg graft, and the stress after pegging graft reduces, and then makes the loss reduce.
Similarly, the second joint part and the third joint part are arranged, so that the mechanical strength of the iron core can be improved, the loss is reduced, and the iron core is convenient to assemble.
Drawings
Fig. 1 is a schematic structural view of a single-frame iron core with a single-opening structure in the prior art;
FIG. 2 is another structural diagram of a single-frame core with a single-opening structure in the prior art;
FIG. 3 is a schematic structural diagram of a single-frame core with a double-opening structure in the prior art;
FIG. 4 is a schematic view of another prior art single-frame core with a double-opening structure;
fig. 5 is a schematic structural diagram of a single-frame iron core according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a single frame core after opening according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view of a three-dimensional wound core and three sets of coils according to an embodiment of the present invention;
fig. 8 is a cross-sectional view of a set of coils and core legs of two single-frame cores after being spliced according to a second embodiment of the present invention;
fig. 9 is a schematic structural view of a single-frame core according to a third embodiment of the present invention;
fig. 10 is a schematic structural view of a single-frame core according to a fourth embodiment of the present invention;
fig. 11 is a schematic structural view of a single-frame iron core according to a fifth embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The first embodiment is as follows:
as shown in fig. 5, 6 and 7, in a first preferred embodiment of the stereoscopic wound core, the transformer thereof and the method for assembling the transformer of the present invention, the stereoscopic wound core includes three single-frame cores 1 with the same structure, each single-frame core 1 is wound from inside to outside by a magnetic conductive sheet 10 into a frame structure having an upper yoke 11, a lower yoke 12, and a left core leg 13 and a right core leg 14 connecting the upper and lower yokes, and the magnetic conductive sheets at the connection positions between the upper and lower yokes and the left and right core legs are in a straight shape inclined at 45 °; in the embodiment, the cross section of the iron core column is circular, each layer of magnetic conductive sheets 10 of each single-frame iron core 1 is provided with a fracture seam 100 capable of opening the single-frame iron core 1, and the fracture seams 100 on a plurality of adjacent layers of magnetic conductive sheets 10 of each single-frame iron core 1 are formed from outside to inside and are sequentially combined into a first seam part 101, a second seam part 102 and a third seam part 103, wherein the first seam part 101 is positioned outside the upper yoke 11 so as to form a single-opening structure opened by each magnetic conductive sheet 10 positioned outside in each single-frame iron core 1; and the fracture joints 100 on the magnetic conductive sheets 10 of the adjacent layers corresponding to the first joint part 101 are staggered and distributed in a step shape. The second joint part 102 is positioned in the middle of the left and right iron core columns of each single-frame iron core 1 at the same time to form a double-opening structure for opening each magnetic conductive sheet 10 in the middle of each single-frame iron core 1; in this embodiment, there are two sets of second joint portions 102 located in the middle of the left and right iron core columns and distributed inside and outside, and the fracture joints 100 on the magnetic conductive sheets 10 of adjacent layers corresponding to each set of second joint portions 102 are staggered and distributed in a step shape. The third joint portion 103 is located inside the upper yoke 11 to form a single-opening structure in which each magnetic conductive piece 10 located inside each single-frame iron core 1 is opened; and the fracture seams 100 on the adjacent single-layer magnetic conductive sheets 10 corresponding to the third seam part 103 are staggered and distributed in a step shape.
The transformer of this embodiment includes the above-mentioned three-dimensional wound core and three sets of coils 2, and each set of coils 2 is fitted over the corresponding iron core column. Each group of coils 2 comprises a primary coil 21, a main hollow channel insulation 22 and a secondary coil 23 which are arranged from inside to outside in sequence; the cross-sectional shape of each set of coils 2 is circular.
The steps of the assembly method of the transformer in the embodiment are as follows:
firstly, placing a coil 2: taking three coils 2 and horizontally placing the three coils 2 on the assembly table 500, wherein the three coils 2 are distributed in a triangular manner; as shown in fig. 7, the central axis of each coil 2 in the laid state is arranged horizontally; of course, each coil 2 may also be vertically placed on the assembly table 500, and the central axis of each coil 2 is vertically arranged in the vertical state;
opening the first single-frame iron core: firstly, opening a first seam part 101 in the single-frame iron core 1 from inside to outside, namely, starting from a fracture seam 100 of the outermost magnetic conductive sheet 10, opening two ends of the magnetic conductive sheet 10 from inside to outside, and operating layer by layer from outside to inside according to the opening of the first seam part 101 until all the magnetic conductive sheets 10 in the first seam part are opened; then, the upper part (in an inverted U shape) of the local single-frame iron core corresponding to the second joint part 102 is pulled out, so that the second joint part 102 is opened; opening the third seam part 103 from inside to outside, that is, starting from the fracture seam 100 of the outermost magnetic conductive sheet 10 corresponding to the third seam part 103, opening both ends of the magnetic conductive sheet 10 from inside to outside, and operating layer by layer from outside to inside according to the opening of all the magnetic conductive sheets 10 in the third seam part 103; the opened configuration is shown in FIG. 6;
thirdly, assembling the coil 2 and the first single-frame iron core: inserting the opened left and right iron core columns of the first single-frame iron core into the first and second coils respectively; then, the third seam portion 103 of the single-frame iron core 1 is closed from outside to inside, that is, the two ends of the magnetic conductive sheet 10 are folded from outside to inside from the innermost magnetic conductive sheet 10 corresponding to the third seam portion 103 to close the fracture seam 100 of the layer, and the operation is performed layer by layer from inside to outside until all the magnetic conductive sheets 10 in the third seam portion 103 are closed; then, the upper part and the lower part of the local single-frame iron core corresponding to the second joint part 102 are spliced; then, the first seam portion 101 is closed from outside to inside, that is, similarly, corresponding to the first seam portion 101, the two ends of the magnetic conductive sheet 10 are turned over from outside to inside from the innermost magnetic conductive sheet 10 of the first seam portion 101 to close the fracture seam 100 of the corresponding layer, and the operation is performed layer by layer from inside to outside according to the above operation until all the magnetic conductive sheets 10 in the first seam portion 101 are in a closed state. Namely, the assembly of the first single-frame iron core and the coil 2 is completed;
and fourthly, sequentially assembling a second single-frame iron core and a third single-frame iron core according to the method of the second step and the method of the third step, wherein the left iron core column and the right iron core column of the second single-frame iron core are respectively inserted into the second coil and the third coil, and the left iron core column and the right iron core column of the third single-frame iron core are respectively inserted into the third coil and the first coil.
The performance parameters of the three-dimensional wound core prepared in the embodiment and the existing three-dimensional wound core are as follows:
| loss (Tile) | Cost of | Short circuit resistance | |
| Existing single-opening three- |
100 | 35000 | High strength |
| Existing double-opening three- |
103 | 34500 | In general |
| Three-dimensional wound core of embodiment one | 101 | 34800 | High strength |
Example two:
as shown in fig. 8, a second preferred embodiment of the three-dimensional wound core, the transformer thereof and the method for assembling the transformer of the present invention is basically the same as the first embodiment, except that in the present embodiment, the cross section of the core barrel is elliptical, and correspondingly, the cross section of the coil 2 is also elliptical.
The steps of the assembly method of the transformer in the embodiment are as follows:
firstly, placing a single-frame iron core 1: taking three single-frame iron cores 1 and vertically placing the three single-frame iron cores on an assembly table 500, and splicing iron core columns of the three single-frame iron cores 1 in pairs; the single-frame iron core in the vertical placement state is shown in fig. 5, that is, the upper yoke and the lower yoke of the single-frame iron core are distributed up and down;
secondly, opening each single-frame iron core 1: opening a first joint part 101 in a first single-frame iron core, then pulling out the upper part or the lower part of a partial single-frame iron core corresponding to a second joint part 102 to realize the opening of the second joint part 102, and then opening a third joint part 103, namely opening the first single-frame iron core; then opening a second single-frame iron core and a third single-frame iron core in sequence according to the method of the step; the opening modes of the first, second and third seam parts are the same as the first embodiment;
thirdly, assembling the coil 2: taking three coils 2 and respectively sleeving iron core columns of the three single-frame iron cores 1 which are spliced pairwise to form iron core columns;
fourthly, closing each single-frame iron core 1: closing a third joint part 103 in the first single-frame iron core, splicing the upper part and the lower part of the local single-frame iron core corresponding to the second joint part 102 to realize the closing of the second joint part 102, and closing the first joint part 101, namely closing the first single-frame iron core; and then closing the second single-frame iron core and the third single-frame iron core in sequence according to the method of the step. The closing manner of the first, second and third seams is the same as that of the first embodiment.
Example three:
as shown in fig. 9, a third preferred embodiment of the three-dimensional wound core, the transformer thereof, and the method for assembling the transformer of the present invention is substantially the same as the first embodiment, except that the first seam portion 101 is located outside the lower yoke 12 in the present embodiment.
Example four:
as shown in fig. 10, a fourth preferred embodiment of the three-dimensional wound core, the transformer thereof, and the method for assembling the transformer of the present invention is basically the same as the third preferred embodiment, except that the magnetic conductive sheets at the connection positions between the upper and lower yokes and the left and right iron core legs are arc-shaped.
Example five:
as shown in fig. 11, a fourth preferred embodiment of the three-dimensional wound core, the transformer thereof, and the method for assembling the transformer of the present invention is substantially the same as the fourth embodiment, except that the single-frame core 1 in the present embodiment does not have the first seam portion 101, that is, the fracture seams 100 on the magnetic conductive sheets 10 of the adjacent layers of the single-frame core 1 formed from outside to inside in the present embodiment are sequentially combined into the second seam portion 102 and the third seam portion 103; the second joint part 102 is located outside the left and right iron core columns of each single-frame iron core 1 at the same time, so as to form a double-opening structure in which each magnetic conductive sheet 10 located outside in each single-frame iron core 1 is opened; the third seam 103 is located inside the upper yoke 11 to form a single-opening structure in which each of the magnetic conductive sheets 10 located inside each of the single-frame cores (1) is opened.
The assembly method of this embodiment is substantially the same as that of the first embodiment, except that in the second step, the second joint 102 and the third joint 103 are opened, and in the third step, the left and right iron cores of the opened first single-frame iron core are inserted into the first and second coils, respectively, and then the third joint 103 and the second joint 102 in the single-frame iron core 1 are closed in sequence.
Claims (14)
1. The utility model provides a three-dimensional book iron core, including three single frame iron core (1), each single frame iron core (1) is by magnetic conduction piece (10) from interior to exterior coiling one-tenth has upper yoke (11), lower yoke (12) and connects left iron leg (13), the frame type structure of right iron leg (14) of upper and lower yoke, the iron leg of each single frame iron core (1) two double-phase amalgamation constitutes the iron leg, each layer magnetic conduction piece (10) of each single frame iron core (1) have fracture seam (100) that enable single frame iron core (1) to open, its characterized in that: fracture seams (100) on a plurality of adjacent layers of magnetic conductive sheets (10) of each single-frame iron core (1) are formed from outside to inside to be sequentially combined into a first seam part (101), a second seam part (102) and a third seam part (103), wherein the first seam part (101) is positioned outside the upper yoke (11) or the lower yoke (12) to form a single-opening structure opened by each magnetic conductive sheet (10) positioned outside in each single-frame iron core (1); the second joint part (102) is positioned in the middle of the left iron core column and the right iron core column of each single-frame iron core (1) at the same time so as to form a double-opening structure for opening each magnetic conductive sheet (10) in the middle of each single-frame iron core (1); the third seam part (103) is positioned inside the upper yoke (11) or the lower yoke (12) to form a single-opening structure in which each magnetic conductive sheet (10) inside each single-frame iron core (1) is opened.
2. The solid wound core according to claim 1, wherein: the first seam portion (101) is located outside the upper yoke (11), and the third seam portion (103) is located inside the upper yoke (11); alternatively, the first seam part (101) is located outside the lower yoke (12), and the third seam part (103) is located inside the upper yoke (11).
3. The solid wound core according to claim 1, wherein: fracture seams (100) on adjacent layers of magnetic conductive sheets (10) corresponding to the first seam parts (101) are staggered with each other and distributed in a step shape; fracture seams (100) on adjacent layers of magnetic conductive sheets (10) corresponding to the second seam parts (102) are staggered with each other and distributed in a step shape; fracture seams (100) on the adjacent single-layer magnetic conductive sheets (10) corresponding to the third seam parts (103) are staggered with each other and distributed in a step shape.
4. The utility model provides a three-dimensional book iron core, including three single frame iron core (1), each single frame iron core (1) is by magnetic conduction piece (10) from interior to exterior coiling one-tenth has upper yoke (11), lower yoke (12) and connects left iron leg (13), the frame type structure of right iron leg (14) of upper and lower yoke, the iron leg of each single frame iron core (1) two double-phase amalgamation constitutes the iron leg, each layer magnetic conduction piece (10) of each single frame iron core (1) have fracture seam (100) that enable single frame iron core (1) to open, its characterized in that: fracture seams (100) on a plurality of adjacent layers of magnetic conduction sheets (10) of each single-frame iron core (1) are formed from outside to inside to be sequentially combined into a second seam part (102) and a third seam part (103); the second joint parts (102) are simultaneously positioned outside the left iron core column and the right iron core column of each single-frame iron core (1) to form a double-opening structure for opening each magnetic conductive sheet (10) positioned outside in each single-frame iron core (1); the third seam part (103) is positioned inside the upper yoke (11) or the lower yoke (12) to form a single-opening structure in which each magnetic conductive sheet (10) inside each single-frame iron core (1) is opened.
5. The solid wound core according to any one of claims 1 to 4, wherein: the cross section of the iron core column is circular, oval, fan-shaped or polygonal.
6. A transformer having the stereoscopic wound core as recited in any one of claims 1 to 3, wherein: the transformer is characterized by further comprising three groups of coils (2), wherein each group of coils (2) is sleeved on the corresponding iron core column body.
7. The transformer of claim 6, wherein: each group of coils (2) comprises a primary coil (21), a main hollow channel insulator (22) and a secondary coil (23) which are arranged from inside to outside in sequence; the cross section shape of each group of coils (2) is matched with the cross section shape of the corresponding iron core cylinder.
8. A transformer having the stereoscopic wound core as recited in claim 4, wherein: the transformer is characterized by further comprising three groups of coils (2), wherein each group of coils (2) is sleeved on the corresponding iron core column body.
9. A method of assembling a transformer according to claim 6, characterized by the steps of:
firstly, placing a coil (2): taking three coils (2) and placing the three coils on an assembly table (500), wherein the three coils (2) are distributed in a triangular manner;
opening the first single-frame iron core: firstly, a first seam part (101) in the single-frame iron core (1) is opened, then the upper part or the lower part of a local single-frame iron core corresponding to a second seam part (102) is pulled out to realize the opening of the second seam part (102), and then a third seam part (103) is opened;
thirdly, assembling the coil (2) and the first single-frame iron core: inserting the left and right iron core columns of the opened first single-frame iron core into the first and second coils respectively, then closing a third joint part (103) of the single-frame iron core (1), splicing the upper part and the lower part of a local single-frame iron core corresponding to the second joint part (102), and closing the first joint part (101) to finish the assembly of the first single-frame iron core and the coil (2);
and fourthly, sequentially assembling a second single-frame iron core and a third single-frame iron core according to the method of the second step and the method of the third step, wherein the left iron core column and the right iron core column of the second single-frame iron core are respectively inserted into the second coil and the third coil, and the left iron core column and the right iron core column of the third single-frame iron core are respectively inserted into the third coil and the first coil.
10. The assembly method of claim 9, wherein: and each coil (2) in the step one is flatly placed on the assembly table, and the central axis of each coil (2) is horizontally arranged.
11. A method of assembling a transformer according to claim 6, characterized by the steps of:
firstly, placing a single-frame iron core (1): taking the three single-frame iron cores (1) and placing the three single-frame iron cores on an assembly table (500), and splicing iron core columns of the three single-frame iron cores (1) in pairs;
secondly, opening each single-frame iron core (1): opening a first joint part (101) in a first single-frame iron core, then pulling out the upper part or the lower part of a partial single-frame iron core corresponding to a second joint part (102) to realize the opening of the second joint part (102), and then opening a third joint part (103), namely opening the first single-frame iron core; then opening a second single-frame iron core and a third single-frame iron core in sequence according to the method of the step;
thirdly, assembling the coil (2): taking three coils (2) and respectively sleeving iron core columns of the three single-frame iron cores (1) in a pairwise spliced mode to form iron core columns;
fourthly, closing each single-frame iron core (1): closing a third joint part (103) in the first single-frame iron core, splicing the upper part and the lower part of a local single-frame iron core corresponding to the second joint part (102) to realize the closing of the second joint part (102), and closing the first joint part (101), namely closing the first single-frame iron core; and then closing the second single-frame iron core and the third single-frame iron core in sequence according to the method of the step.
12. The assembly method of claim 11, wherein: and each single-frame iron core (1) in the first step is vertically placed on an assembly table (500).
13. A method of assembling a transformer according to claim 8, characterized by the steps of:
firstly, placing a coil (2): taking three coils (2) and placing the three coils on an assembly table (500), wherein the three coils (2) are distributed in a triangular manner;
opening the first single-frame iron core: firstly, pulling out the upper part or the lower part of the local single-frame iron core corresponding to the second joint part (102) to open the second joint part (102), and then opening the third joint part (103);
thirdly, assembling the coil (2) and the first single-frame iron core: inserting the left and right iron core columns of the opened first single-frame iron core into the first and second coils respectively, then closing the third joint part (103) of the single-frame iron core (1), and inserting the upper part and the lower part of the local single-frame iron core corresponding to the second joint part (102) in an inserting manner, namely completing the assembly of the first single-frame iron core and the coils (2);
and fourthly, sequentially assembling a second single-frame iron core and a third single-frame iron core according to the method of the second step and the method of the third step, wherein the left iron core column and the right iron core column of the second single-frame iron core are respectively inserted into the second coil and the third coil, and the left iron core column and the right iron core column of the third single-frame iron core are respectively inserted into the third coil and the first coil.
14. A method of assembling a transformer according to claim 8, characterized by the steps of:
firstly, placing a single-frame iron core (1): taking the three single-frame iron cores (1) and placing the three single-frame iron cores on an assembly table (500), and splicing iron core columns of the three single-frame iron cores (1) in pairs;
secondly, opening each single-frame iron core (1): the upper part or the lower part of a local single-frame iron core corresponding to the second joint part (102) in the first single-frame iron core is pulled out to realize the opening of the second joint part (102), and then the third joint part (103) is opened, namely the first single-frame iron core is opened; then opening a second single-frame iron core and a third single-frame iron core in sequence according to the method of the step;
thirdly, assembling the coil (2): taking three coils (2) and respectively sleeving iron core columns of the three single-frame iron cores (1) in a pairwise spliced mode to form iron core columns;
fourthly, closing each single-frame iron core (1): closing a third joint part (103) in the first single-frame iron core, and then inserting the upper part and the lower part of a local single-frame iron core corresponding to the second joint part (102) to realize the closing of the second joint part (102), namely closing the first single-frame iron core; and then closing the second single-frame iron core and the third single-frame iron core in sequence according to the method of the step.
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