CN213025745U - Multistage inclined seam iron core and transformer - Google Patents
Multistage inclined seam iron core and transformer Download PDFInfo
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- CN213025745U CN213025745U CN202021649781.4U CN202021649781U CN213025745U CN 213025745 U CN213025745 U CN 213025745U CN 202021649781 U CN202021649781 U CN 202021649781U CN 213025745 U CN213025745 U CN 213025745U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000001154 acute effect Effects 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 229910052742 iron Inorganic materials 0.000 description 18
- 210000001503 joint Anatomy 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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Abstract
The utility model discloses a multistage oblique seam iron core and transformer, including at least two iron-core columns and with the spliced pole of iron-core column one-to-one, the iron-core column includes that N cover establishes the iron-core piece of laying on the spliced pole that corresponds and along the range upon range of axial of spliced pole, the tip of N iron-core piece all is the hypotenuse structure, all contain an one-level heart piece and a second grade heart piece in every adjacent two iron-core pieces of axial along the spliced pole, the shape and the contour size of each one-level heart piece and each second grade heart piece are all unanimous, all be equipped with first connecting hole on each one-level heart piece, and each second grade heart pieceThe linear distance between a connecting hole and the first end of the first-level core piece in the length direction is L1, each second-level core piece is provided with a second connecting hole, and the linear distance between each second connecting hole and the first end of the second-level core piece in the length direction is L2L1 has a difference from L2. The multistage oblique seam iron core and the transformer have the multistage oblique seam structure, meanwhile, the integral structure is simplified, and the production cost is low.
Description
Technical Field
The utility model relates to a transformer technical field, more specifically say, relate to a multistage inclined joint iron core and transformer.
Background
The transformer core may be classified into a straight seam and an inclined seam according to the seam type. The oblique seam structure, especially the multi-stage oblique seam, is the most effective way to reduce the noise generated by the transformer core and reduce the idle loss and the no-load current on the premise of hardly increasing the material cost. However, in the prior art, the core leg of the core having the multi-stage oblique joint structure is formed by laminating a plurality of core segments having different sizes, and as shown in fig. 1, the plurality of core segments 1 have different sizes, and the size of the core segment 1 in the middle is the largest, and the core segments are gradually reduced symmetrically toward both sides based on the largest size, so that after the core segments 1 are laminated, multi-stage joints having stepped dislocation extending in the same direction are generated at the end portions, and the dislocation sizes of the end portions of two adjacent core segments 1 are the same. Each core limb of whole iron core is all to be based on the intermediate level by the core sheet 1 symmetry of a plurality of different sizes and dislocation range upon range of, leads to manufacturing cost great, and causes from this, when laminating each core sheet 1 of different sizes, need to be strict in the range upon range of order, locating position and dislocation size that correspond to core sheet 1 of different sizes, generally need be equipped with iron core stack process equipment such as roll-over table, the anchor clamps of support and centre gripping core sheet 1, range upon range of process is more loaded down with trivial details and also require highly to workman's technical merit, leads to production to rise the cost higher. Therefore, how to reduce the production cost of the skewed-seam iron core for a small transformer is a problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multistage mitre seam iron core, its overall structure is simplified when having multistage mitre seam structure, compares and has lower manufacturing cost in prior art. An object of the utility model is also to provide a transformer including above-mentioned multistage mitre seam iron core.
In order to achieve the above object, the utility model provides a multistage inclined seam iron core, including at least two iron leg cores and the spliced pole with the iron leg cores one-to-one, the iron leg cores include N iron core pieces, N the iron core piece all overlaps and is laid on the spliced pole that corresponds and along the axial range upon range of spliced pole, the tip of N the iron core piece all is the hypotenuse structure, N the iron core piece includes a plurality of first grade heart pieces and a plurality of second grade heart pieces, every adjacent two the iron core pieces of axial along the spliced pole all contain one the first grade heart piece and one the second grade heart piece, the shape and the contour size of each first grade heart piece and each second grade heart piece are all unanimous, all be provided with the first connecting hole that supplies the spliced pole to penetrate on each first grade heart piece, and each the first connecting hole with the linear distance of the first end of the length direction of first grade heart piece is L1, each secondary core plate is provided with a second connecting hole for the connecting column to penetrate through, the linear distance between each second connecting hole and the first end of the secondary core plate in the length direction is L2, and the L1 and the L2 have a difference value; wherein N is a positive integer greater than zero, and L1 and L2 are both positive numbers greater than zero.
Preferably, the length of the connecting column is not greater than the thickness of the core limb.
Preferably, both sides of each of the core legs in the width direction are respectively bonded by an adhesive.
Preferably, N core segments of each of the core legs are bonded to the corresponding connecting column.
Preferably, the connecting column is made of an insulating material.
Preferably, the core pillars are provided with three core pillars arranged at intervals and include a central pillar located in the middle and core side pillars located at two sides respectively, two end portions of each core side pillar in the length direction incline from one side to the other side along the width direction, and two end portions of each core side pillar in the length direction are both in a V-shaped structure.
Preferably, the iron core comprises two iron yokes connected to the upper end and the lower end of the iron core column respectively, each iron yoke comprises a plurality of iron yoke sheets connected in a stacked mode, the thickness of each iron yoke sheet is consistent with that of each iron core sheet and is connected with each layer of iron core sheets in a one-to-one correspondence mode, triangular notches for enabling the end portions of the iron core side columns to stretch into and abut against are formed in the two sides of the cross section of each iron yoke sheet in the square shape and the length direction of the whole iron yoke sheet, and V-shaped notches for enabling the end portions of the central column to stretch into and abut against are formed in the middle of the cross section of each iron yoke sheet.
Preferably, the acute angle of the triangular notch is set to 45 degrees.
Preferably, the height of the triangular notch corresponds to the width of the yoke plate, and the inclined side of the triangular notch forms one side of the yoke plate in the length direction.
The utility model also provides a transformer is provided with transformer core, transformer core sets up to as above arbitrary the multistage inclined joint unshakable in one's determination.
In the technical scheme provided by the utility model, the iron core column of the multistage oblique seam iron core is formed by laminating N iron core sheets with the same shape and contour dimension, and N iron core sheets are divided into two types, connecting holes are arranged on the two types of iron core sheets, the positions of the connecting holes on the two types of iron core sheets have dimensional deviation in the length direction, the connecting columns run through the two types of iron core sheets which are sequentially staggered and laminated, so that the staggered dimension is arranged between the end parts of every two adjacent iron core sheets, the end part of the whole iron core column has a continuous multistage staggered seam structure, the arrangement is such that the whole iron core structure is simple, compared with the prior art, the dimension specification of the iron core sheets is simplified into one type from multiple types, the production is very favorable, and each iron core sheet can realize staggered connection by penetrating through the same connecting column, compared with the prior art, the structure does not need to carry out the control of the placing position of the iron core sheets layer upon layer and the dimension control and the, the production process is obviously simplified, and the production cost is reduced; and through staggered lamination, compared with progressive lamination in the same direction in the prior art, the core limb is more regular as a whole, and the core limb composed of the same number of layers of core sheets has larger entity volume and better performance parameters.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a side view of a prior art core leg;
fig. 2 is a schematic structural view of an iron core column of a multi-stage slant-seam iron core in an embodiment of the present invention;
fig. 3 is a schematic structural view of a first-stage core piece and a second-stage core piece of a multi-stage slant-seam iron core according to an embodiment of the present invention;
fig. 4 is a sectional view of an iron core leg according to an embodiment of the present invention;
fig. 5 is a schematic view of an overall structure of a multi-stage slant-seam iron core according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a yoke piece according to an embodiment of the present invention.
In fig. 1-6:
1. a core sheet; 11. a first-level heart piece; 12. a second-level heart piece; 13. a first connection hole; 14. a second connection hole; 2. connecting columns; 3. a yoke piece; 31. a triangular notch; 32. and a V-shaped notch.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
An object of the present embodiment is to provide a multi-stage mitre core having a multi-stage mitre structure while simplifying an overall structure, and having a lower production cost than the related art. It is another object of the present invention to provide a transformer including the above-described multi-stage mitred iron core.
Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.
Referring to fig. 2-6, the multi-stage slant-seam iron core provided in this embodiment includes iron core legs and connecting columns 2, where the number of the iron core legs may be specifically set as required, and is at least two, or may be three or five. The number of the connecting columns 2 is the same as that of the iron core columns, and the connecting columns are arranged in one-to-one correspondence with the iron core columns. The core limb includes N (N is for being greater than the positive integer of zero) core pieces 1, and N core pieces 1 cover is established on corresponding spliced pole 2 and is laid along the axial range upon range of spliced pole 2. And the shapes and the contour sizes of the N iron core sheets 1 are consistent, compared with the prior art that the sizes and the specifications of a plurality of iron core sheets 1 forming each iron core column are different, the iron core column can be obviously and simply produced, and the production automation and the streamline are facilitated. All need be provided with the perforating hole that supplies spliced pole 2 to pass on each core plate 1, according to the position in hole, N core plate 1 divide into two types altogether: each N iron core piece 1 comprises a plurality of first-level core pieces 11 and a plurality of second-level core pieces 12, each first-level core piece 11 is provided with a first connecting hole 13 for a connecting column 2 to penetrate through, the linear distance between each first connecting hole 13 and the first end of the first-level core piece 11 in the length direction is L1, each second-level core piece 12 is provided with a second connecting hole 14 for the connecting column 2 to penetrate through, the linear distance between each second connecting hole 14 and the first end of the second-level core piece 12 in the length direction is L2, a difference value exists between L1 and L2, and the size of the difference value can be specifically set according to requirements; wherein, L1 and L2 are positive numbers larger than zero, and the first end of the first-stage core sheet 11 and the first end of the second-stage core sheet 12 are mutually corresponding and are end parts in the same direction. Meanwhile, the two types of core sheets 1 are stacked in a staggered manner in sequence, namely, each two adjacent core sheets 1 in the axial direction of the connecting column 2 comprise one first-stage core sheet 11 and one second-stage core sheet 12, the end parts of each two adjacent core sheets 1 are staggered with each other and have size difference, and the end parts of the whole core column are of a continuous multi-stage staggered joint structure. The end portions of the N core sheets 1 are all in a bevel edge structure, and the end portions of the core legs of the multistage oblique-seam core provided by this embodiment all have a multistage oblique-seam structure.
According to the arrangement, on the basis that each iron core column of the whole iron core is provided with the multistage inclined seam structure, the overall composition structure is simplified, the specification and the types of the iron core sheets 1 forming each iron core column are remarkably reduced, the production is simple and convenient, and each iron core sheet 1 can be connected in series through the connecting column 2 to form the multistage inclined seam structure which is staggered and stacked; and be crisscross dislocation laminated structure between each core sheet 1, compare in the dislocation laminated structure who advances in proper order along same direction, the iron leg that the same number of piles of core sheets 1 constitutes has more volume unshakable in one's determination, has more excellent performance parameter, and the overall structure of unshakable in one's determination is more regular neat, easily carries out the winding, and has formed continuous a plurality of connecting grooves at the iron leg tip, does benefit to very much and is convenient for carry out the connection of yoke.
Simultaneously, on the width direction of each core sheet 1, the distance of the width direction's of first connecting hole 13 and first core sheet side can be equated to, the distance of the width direction's of second connecting hole 14 and second core sheet side, so set up, two tip of the length direction of iron prop have the multistage oblique seam structure that misplaces layer upon layer, and width direction's both sides parallel and level is regular, easily carries out the winding.
Further, in order to prevent the connecting column 2 from protruding out of the core limb, the length of the connecting column 2 is not greater than the thickness of the core limb, and if the thickness of each core segment 1 is greater than 0.5 mm, the length of the connecting column 2 is 0-0.5 mm smaller than the thickness of the stack of the N core segments 1.
All carry out fixed connection between N iron core sheet 1 of every iron core column, in this embodiment, all bond through the binder in every iron core column width direction's both sides, use the binder to fill between the width direction's of each iron core sheet 1 side promptly and bond, then every two adjacent iron core sheets 1 all can firmly be connected, and connect easy and simple to handle.
Correspondingly, N core sheets 1 of each core limb are bonded with the corresponding connecting column 2, the connecting column 2 and each first connecting hole 13 or each second connecting hole 14 are filled with a bonding agent, the whole core limb is firmly connected, and the possibility of looseness is avoided.
The connection post 2 may be insulated or non-insulated. In the preferred scheme of this embodiment, the material of spliced pole 2 sets up to insulating material, and spliced pole 2 can be plastic stick, epoxy stick etc..
As shown in fig. 2, in the present embodiment, three core legs are specifically arranged at intervals, and include a central leg located in the middle and core side legs located at both sides. The two ends of the iron core side column in the length direction are inclined gradually from one side to the other side along the width direction and are of a bevel edge structure with a fixed inclined angle, the two ends of the center column in the length direction are inclined gradually from the middle to the two sides along the width direction, and the whole iron core side column is of a V-shaped structure. Specifically, the inclination angle of the ends of the two core legs may be 45 degrees. That is, the core segments 1 constituting the core side column and the core segments 1 constituting the center column have different structures, each core segment 1 of the core side column has a strip structure with two ends having symmetric 45-degree oblique sides, and each core segment 1 of the center column has a strip structure with two ends having symmetric V-shaped sides. However, all the core segments 1 have the same thickness.
In this embodiment, the multi-stage slant-seam iron core further includes two yokes respectively connected to the upper and lower ends of all the core legs, each yoke includes a plurality of yoke segments 3 connected in a stacked manner, and the thickness of each yoke segment 3 is equal to the thickness of each core segment 1 and is connected to each core segment 1 in each layer in a one-to-one correspondence. The cross section of each yoke piece 3 is entirely square, and both sides in the length direction are provided with a triangular notch 31 for the end of the iron core side column to extend into and contact against, and the middle part is provided with a V-shaped notch 32 for the end of the central column to extend into and contact against, as shown in fig. 6, so that the actual shape of the yoke piece 3 is matched with the end of the core column. The contact connection of the iron yoke and each iron core column is a stacked and staggered oblique butt joint structure, and a multistage oblique seam is formed at the butt joint. The end parts of the iron core side columns are integrally triangular and consistent with the triangular notches 31 in shape, the end parts are used for butt joint, the V-shaped end part of the central column is consistent with the V-shaped notches 32 in shape and is used for butt joint, the plurality of iron core sheets 1 are staggered and staggered so that a plurality of continuous grooves are formed in the end parts, and the iron yoke sheets 3 and the iron core sheets 1 are spliced, so that the connection operation is simple and convenient.
In the preferred embodiment of the present invention, the height of the triangular notch 31 is consistent with the width of the yoke piece 3, the inclined side of the triangular notch 31 forms one side of the yoke piece 3 in the length direction, and the end of the core side column covers the end of the yoke in the length direction, so as to ensure the contact connection between the core and the yoke and facilitate the heat dissipation of the core. The depth of the V-shaped notch 32 is smaller than the width of the iron yoke piece 3, the end part of the central column is embedded into the iron yoke, the connection is stable and comprehensive, and the iron yoke has higher structural strength.
The embodiment also provides a transformer, which is provided with a transformer core, wherein the transformer core is the multi-stage inclined seam core as described in the above embodiments, and the transformer provided by the embodiment has the beneficial effects that the core structure is simple and regular, and the production cost is low. The derivation process of the beneficial effect is substantially similar to the derivation process of the beneficial effect brought by the multi-stage inclined seam iron core, and is not repeated herein.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The multiple schemes provided by the invention comprise basic schemes, are independent from each other and are not restricted with each other, but can be combined with each other under the condition of no conflict, so that multiple effects are realized together.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The multistage oblique seam iron core is characterized by comprising at least two iron core columns and connecting columns (2) which are in one-to-one correspondence with the iron core columns, wherein each iron core column comprises N iron core sheets (1), the N iron core sheets (1) are sleeved on the corresponding connecting column (2) and are stacked and laid along the axial direction of the connecting column (2), the end parts of the N iron core sheets (1) are of bevel edge structures, the N iron core sheets (1) comprise a plurality of first-stage core sheets (11) and a plurality of second-stage core sheets (12), each two adjacent iron core sheets (1) in the axial direction of the connecting column (2) comprise one first-stage core sheet (11) and one second-stage core sheet (12), the shapes and the contour sizes of the first-stage core sheets (11) and the second-stage core sheets (12) are consistent, and each first connecting hole (13) for the connecting column (2) to penetrate through is arranged on each first-stage core sheet (11), and the linear distance between each first connecting hole (13) and the first end of the primary core piece (11) in the length direction is L1Each secondary core piece (12) is provided with a second connecting hole (14) for the connecting column (2) to penetrate through, and the linear distance between each second connecting hole (14) and the first end of the secondary core piece (12) in the length direction is L2Said L is1And said L2Having a difference; wherein N is a positive integer greater than zero, L1、L2Are all positive numbers greater than zero.
2. A multiple stage mitre core according to claim 1, characterised in that the length of the connecting studs (2) is not greater than the thickness of the core stud.
3. The multiple-step slant-seam core as claimed in claim 1, wherein both widthwise sides of each of said core legs are respectively bonded by an adhesive.
4. The multiple-stage mitred seam core according to claim 1, wherein N core segments (1) of each of the core legs are bonded to the corresponding connecting columns (2).
5. A multiple-stage mitre core according to claim 1, characterised in that the material of the connection studs (2) is provided as an insulating material.
6. The multiple-stage slant-seam core as claimed in claim 1, wherein said core legs are provided with three spaced-apart core legs and include a center leg in the middle and core legs on both sides, respectively, both lengthwise ends of each of said core legs are inclined from side to side in a width direction, and both lengthwise ends of said center leg are V-shaped.
7. The multiple-step slant-joint iron core according to claim 6, further comprising two yokes respectively connected to upper and lower ends of said core leg, each of said yokes comprising a plurality of yoke pieces (3) stacked and connected, each of said yoke pieces (3) having a thickness corresponding to a thickness of each of said core pieces (1) and being connected to each of said core pieces (1) in a one-to-one correspondence, each of said yoke pieces (3) having a generally square cross section, wherein triangular notches (31) are provided at both sides in a length direction for allowing end portions of said core leg to extend into and abut against, and a V-shaped notch (32) is provided at a middle portion for allowing end portions of said center leg to extend into and abut against.
8. The multiple-step miter core as recited in claim 7, wherein an acute angle of said triangular notch (31) is set to 45 degrees.
9. The multiple-step slant-seamed core of claim 8, wherein the height of the triangular notch (31) corresponds to the width of the yoke piece (3), and the oblique side of the triangular notch (31) forms one side of the yoke piece (3) in the length direction.
10. A transformer, characterized in that a transformer core is provided, which transformer core is provided as a multi-stage mitred joint core according to any one of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021649781.4U CN213025745U (en) | 2020-08-10 | 2020-08-10 | Multistage inclined seam iron core and transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021649781.4U CN213025745U (en) | 2020-08-10 | 2020-08-10 | Multistage inclined seam iron core and transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114783758A (en) * | 2022-04-29 | 2022-07-22 | 山东电工电气集团有限公司 | Transformer core lamination punching calculation method |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114783758A (en) * | 2022-04-29 | 2022-07-22 | 山东电工电气集团有限公司 | Transformer core lamination punching calculation method |
| CN114783758B (en) * | 2022-04-29 | 2024-03-29 | 山东电工电气集团数字科技有限公司 | Transformer core lamination punching calculation method |
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Effective date of registration: 20231120 Address after: B-32, 3rd Floor, No. 18, Lane 945, Changta Road, Shihudang Town, Songjiang District, Shanghai, 201600 Patentee after: Shanghai Yanhong Magnetoelectronics Technology Co.,Ltd. Address before: 315400 No.20, majiahou hengbei Road, Sibei village, Simien Town, Yuyao City, Ningbo City, Zhejiang Province Patentee before: Ningbo Yingda Kesi Electromagnetic Technology Co.,Ltd. |