CN207611666U - A kind of core structure improving iron core filling rate - Google Patents
A kind of core structure improving iron core filling rate Download PDFInfo
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- CN207611666U CN207611666U CN201721353755.5U CN201721353755U CN207611666U CN 207611666 U CN207611666 U CN 207611666U CN 201721353755 U CN201721353755 U CN 201721353755U CN 207611666 U CN207611666 U CN 207611666U
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Abstract
The utility model is related to a kind of core structure improving iron core filling rate, the stem or yoke of iron core be by multistage trapezoid cross section structure closed assembly at polygonal cross-section, the trapezoidal adjacent bottom edge length of adjacent two-stage is identical in stem section or yoke section；Multistage trapezoid cross section parallelism structural closed assembly；It is overall structure or splicing construction per level-one trapezoid cross section.The utility model uses the single-stage core section of trapezium structure, effectively increases iron core filling rate, can save core material 20%, while reducing cost, the stem portion after three-phase coil independence coiling again with three-dimensional folded iron core is set with, and closed assembly is convenient, assembly time is reduced, tooling efficiency is improved.
Description
Technical field
The utility model is related to a kind of core structure optimisation technique, specially a kind of iron core knot improving iron core filling rate
Structure.
Background technology
Iron core is the important component of power transformer, it is both the flux circuit of transformer and the branch of transformer
Core is supportted, weight accounts for 30 or more the percent of transformer total weight, and product is bigger, this ratio is bigger, so iron
The manufacturing cost that how many pairs of transformers of core cost are total has very important influence.Therefore, very heavy in transformer manufacturing
The link wanted is exactly the design of iron core.
Standard core design drawing in transformer manufacturing industry generally use enterprise of China, for many years, people are seeking always
Looking for reduces the shortcut of iron core cost, and it is one of the important method for realizing this shortcut that core section optimization, which calculates,.In order to fully sharp
With the space in coil, transformer core frequently with steps stacking type, i.e., iron core by multistage different in width silicon steel sheet stack
It forms, profile is circle, and section is structure symmetrical above and below in circle.
For transformer core section optimal problem, some researchers propose a variety of optimization sides to transformer fe core section
Method.Chinese patent (authorize publication number CN105845427A) proposes a kind of transformer fe core section based on particle group optimizing and sets
Meter method can quickly acquire transformer core design scheme using this design method.Chinese patent (Authorization Notice No.
CN101013624 it) uses a kind of transformer core optimal design method for cross section, auxiliary tool to calculate, artificial labor can be simplified significantly
Traverse degree.Chinese patent (Authorization Notice No. CN201765913U) proposes a kind of novel electric power transformer fe stem, increases oil duct
Design, to keep its thermal diffusivity more preferable, and preferably reduce copper loss and iron loss caused by due to fever.Chinese patent (is awarded
Power notification number CN102208274A) pass through the design of the optimal core section of Program.To sum up, program is all used in above-mentioned patent
The Optimum cross section of calculating transformer iron core has liberated artificial solution, improves calculating speed, is but cut to iron core not from structure
Face carries out substantial improvements, not up to ideal fill factor.
Currently, electrical transformer cores generally use identical multistage rectangular cross section structure, and the width of lamination at different levels and
Thickness usually iron core diameter determine after, by table look-up value by uniquely determine.The effective cross section of iron core is accumulated, and is directly affected
To no-load loss, iron core diameter and internal coil diameter.Therefore, core section optimization can effectively save the manufacture of transformer
Cost is of great significance.For the above present situation, from the section material of product design with it is energy saving from the aspect of, it is necessary to propose a kind of
Core section optimizes structure and method, can effectively reduce transformer core cost and no-load loss.And it disclosure satisfy that at present above-mentioned
It is required that technical solution there is not been reported.
Utility model content
The deficiencies of, iron core low for core section filling rate in the prior art manufacturing cost is high and no-load loss is big, this
Utility model technical problems to be solved are to provide a kind of core structure improving iron core filling rate.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of core structure improving iron core filling rate of the utility model, the stem or yoke of iron core are by trapezoidal section multistage
Face structure closed assembly at polygonal cross-section, the trapezoidal adjacent bottom edge length of adjacent two-stage is identical in stem section or yoke section.
Multistage trapezoid cross section parallelism structural closed assembly.
It is overall structure or splicing construction per level-one trapezoid cross section.
Multistage trapezoid cross section structure is divided into two parts, and integrated iron core is symmetrically spliced into after the parallel closed assembly of each section.
The stem of iron core or the section of yoke also have rectangle, with the trapezoidal section for collectively constituting stem or yoke.
The utility model has the advantages that and advantage：
1. compared with rolling up iron core with the three-phase stereo of capacity, the utility model using the single-stage iron core of trapezium structure due to being cut
Face effectively increases iron core filling rate, verified, can save core material 20%, reduce cost, meanwhile, three-phase coil can
With independent coiling, the stem portion after the completion of coiling again with three-dimensional folded iron core is set with, and is then folded again and is plugged yoke, closed assembly side
Just, assembly time is reduced, tooling efficiency is improved.
2. optimize iron core sawing sheet mode, although increasing the series of lamination, total number of laminations be it is constant,
It is not increase workload for lamination, reduces closed assembly difficulty, it is easier to processes and meet what technique and technology required
Transformer core.
3. the utility model using lamination process assemble iron core, can independent coiling, keep loop construction even closer, increase
Strong anti-short circuit capability.
Description of the drawings
Fig. 1 is the utility model iron core slitting sawing sheet structural schematic diagram；
Fig. 2 is the utility model iron core transverse shearing sawing sheet structural schematic diagram；
Fig. 3 A are the first lamination schematic diagram in the utility model iron core principal post section；
Fig. 3 B are second of lamination schematic diagram in the utility model iron core principal post section；
Fig. 3 C are the third lamination schematic diagram in the utility model iron core principal post section；
Fig. 4 A are the first lamination schematic diagram of column section by the utility model iron core；
Fig. 4 B are second of lamination schematic diagram of column section by the utility model iron core；
Fig. 5 A are the first lamination schematic diagram in the utility model iron core or more yoke section；
Fig. 5 B are second of lamination schematic diagram in the utility model iron core or more yoke section；
Fig. 5 C are the third lamination schematic diagram in the utility model iron core or more yoke section；
Fig. 5 D are the 4th kind of lamination schematic diagram in the utility model iron core or more yoke section；
Fig. 5 E are the 5th kind of lamination schematic diagram in the utility model iron core or more yoke section.
Wherein, 1 is iron core column section, and 2 be grade, and 3 be monolithic silicon steel sheet, and 4 be silicon steel sheet coiled strip.
Specific implementation mode
The utility model is further elaborated with reference to the accompanying drawings of the specification.
A kind of core structure improving iron core filling rate of the utility model, the stem or yoke of iron core are by trapezoidal section multistage
Face structure closed assembly at polygonal cross-section, the trapezoidal adjacent bottom edge length of adjacent two-stage is identical in stem section or yoke section.
The present embodiment provides three kinds of structure types, the first is as shown in Figure 3A multistage trapezoid cross section parallelism structural closed assembly.
The structure is suitable for the principal post that plane folds iron core.
Second as shown in Figure 3B, and multistage trapezoid cross section structure is divided into two parts, symmetrically splices after the parallel closed assembly of each section
For integrated iron core column section 1.The structure is suitable for the principal post of three-phase solid laminated core.
It is overall structure i.e. the first structure or splicing construction i.e. the third structure per 2 trapezoid cross section of level-one, such as Fig. 3 C institutes
Show, applying and folding iron core in three-phase solid laminated core or plane, the level-one in iron core cross section is trapezoidal by two or more ladders
Shape is arbitrarily assemblied to form.In practical operation, if 4 width of silicon steel sheet coiled strip of inventory be less than design width, can be used with
Upper type splices, and achievees the purpose that gather materials on the spot.
Every level-one of iron core column section 1 by non-parallel opposite side quadrangle silicon steel sheet closed assembly, as shown in Figure 2.
A kind of shearing that the core structure improving iron core filling rate uses of the utility model, assembly method are as follows：
1) by silicon steel sheet coiled strip 4 by with roll direction at predetermined angular carry out slitting, form trapezoidal material；
2) trapezoidal material is cut by the progress of the length of design angle and monolithic silicon steel sheet is horizontal, forms multiple monolithic silicon steel sheets 3；
3) by 3 closed assembly of multiple monolithic silicon steel sheets at a grade 2 of iron core column section 1, section is trapezoidal；
4) go out multiple grades 2 of different size according to above method closed assembly；
5) 2 closed assembly of multiple grades is at an iron core column section 1.
In step 1), silicon-steel sheet longitudinal-shearing sawing sheet angle rolls direction with silicon steel sheet and is not more than 3 degree, specific embodiment 0.8
Degree, as shown in Figure 1.
In step 2), it is horizontal cut to use roll direction cut mode alternate for 40~50 degree of positive and negative knives with silicon steel sheet, after shearing
Monolithic silicon steel sheet 3 form non-trapezoidal quadrangle, silicon steel sheet is not bent, as shown in Figure 2.
In step 3), the monolithic silicon steel sheet 3 after shearing forms level-one 2 through stack, and cross section becomes trapezoidal, and multistage is folded
Circle (as shown in fig.3 a 3 c), oval (as shown in Figure 4 A) or track type (as shown in Figure 4 B) circular arc portion are formed after dress, assembly
Inscribed polygon structure.
In step 5), multiple grades of closed assemblies are realized at an iron core column section 1 by following steps：
Location hole is beaten in the midline position of each monolithic silicon steel sheet 3；
In iron core overlapping platform placement positioning bar；
Each monolithic silicon steel sheet 3 carries out positioning closed assembly across silicon steel sheet location hole by locating rod to silicon steel sheet.
Iron core column section 1 after closed assembly, which is formed, has inscribed trapezoidal cross section, the global shape difference of iron core cross section
Meet the Arbitrary Cross-sections requirement of principal post, other column, upper and lower yoke.
It such as applies in three-phase solid laminated core, the cross section of iron yoke forms almost fan (such as by multiple trapezoidal closed assemblies
Shown in Fig. 5 A), the circular arc portion of wherein almost fan is the inscribed polygon of circular arc, and rest part is by isosceles trapezoid section closed assembly
Composition.
Alternatively, applying in three-phase solid laminated core, the cross section of iron yoke forms approximate triangle by multiple trapezoidal closed assemblies
The pressure yoke structure of shape (as shown in Figure 5 B).
Iron core is folded in plane alternatively, applying, iron yoke cross section forms half elliptic (such as Fig. 5 C institutes by multiple trapezoidal closed assemblies
Show) the pressure yoke structure of semicircle (as shown in Figure 5 D) or flat-top semicircle (as shown in fig. 5e), in structure shown in Fig. 5 E, flat top portion
The rectangular cross-section divided, circular arc portion section are trapezoidal, collectively constitute the section of stem or yoke.
The circular arc portion of above-mentioned shaped cross is all made of the grade 2 of the trapezoid cross section in the utility model.
Claims (4)
1. a kind of core structure improving iron core filling rate, it is characterised in that：The stem or yoke of iron core are by trapezoidal section multistage
Face structure closed assembly at polygonal cross-section, the trapezoidal adjacent bottom edge length of adjacent two-stage is identical in stem section or yoke section；
Multistage trapezoid cross section parallelism structural closed assembly.
2. the core structure as described in claim 1 for improving iron core filling rate, it is characterised in that：It is whole per level-one trapezoid cross section
Body structure or splicing construction.
3. the core structure as described in claim 1 for improving iron core filling rate, it is characterised in that：Multistage trapezoid cross section knot
Structure is divided into two parts, and integrated iron core is symmetrically spliced into after the parallel closed assembly of each section.
4. the core structure as described in claim 1 for improving iron core filling rate, it is characterised in that：The stem of iron core or cutting for yoke
Face also has rectangle, with the trapezoidal section for collectively constituting stem or yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721353755.5U CN207611666U (en) | 2017-10-20 | 2017-10-20 | A kind of core structure improving iron core filling rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721353755.5U CN207611666U (en) | 2017-10-20 | 2017-10-20 | A kind of core structure improving iron core filling rate |
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| Publication Number | Publication Date |
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| CN207611666U true CN207611666U (en) | 2018-07-13 |
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| CN201721353755.5U Active CN207611666U (en) | 2017-10-20 | 2017-10-20 | A kind of core structure improving iron core filling rate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107658110A (en) * | 2017-10-20 | 2018-02-02 | 特变电工股份有限公司 | A kind of core structure and its shearing, assembly method for improving iron core filling rate |
| WO2020093589A1 (en) * | 2018-11-09 | 2020-05-14 | 王永法 | Transformer laminated core and preparation method therefor |
-
2017
- 2017-10-20 CN CN201721353755.5U patent/CN207611666U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107658110A (en) * | 2017-10-20 | 2018-02-02 | 特变电工股份有限公司 | A kind of core structure and its shearing, assembly method for improving iron core filling rate |
| CN107658110B (en) * | 2017-10-20 | 2024-03-12 | 特变电工股份有限公司 | Iron core structure for improving iron core filling rate and shearing and assembling method thereof |
| WO2020093589A1 (en) * | 2018-11-09 | 2020-05-14 | 王永法 | Transformer laminated core and preparation method therefor |
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