CN107658110A - A kind of core structure and its shearing, assembly method for improving iron core filling rate - Google Patents
A kind of core structure and its shearing, assembly method for improving iron core filling rate Download PDFInfo
- Publication number
- CN107658110A CN107658110A CN201710981565.6A CN201710981565A CN107658110A CN 107658110 A CN107658110 A CN 107658110A CN 201710981565 A CN201710981565 A CN 201710981565A CN 107658110 A CN107658110 A CN 107658110A
- Authority
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- China
- Prior art keywords
- iron core
- section
- silicon steel
- core
- filling rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000010008 shearing Methods 0.000 title claims abstract description 15
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 37
- 230000000712 assembly Effects 0.000 claims abstract description 12
- 238000000429 assembly Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 claims description 4
- 239000011162 core material Substances 0.000 abstract description 33
- 241000826860 Trapezium Species 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000003475 lamination Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 238000005457 optimization Methods 0.000 description 3
- 241001270131 Agaricus moelleri Species 0.000 description 2
- 238000013475 authorization Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Classifications
-
- 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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
-
- 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
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0233—Manufacturing of magnetic circuits made from sheets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The present invention relates to a kind of core structure and its shearing, assembly method for improving iron core filling rate, the stem or yoke of iron core be by multistage trapezoid cross section structure closed assembly into polygonal cross-section, the trapezoidal adjacent base length of adjacent two-stage is identical in stem section or yoke section；Method and step is：Silicon steel sheet coiled strip is subjected to slitting into predetermined angular by with rolling direction, forms trapezoidal material；Trapezoidal material is cut by the progress of the length of predetermined angular and monolithic silicon steel sheet is horizontal, forms multiple monolithic silicon steel sheets；A level by multiple monolithic silicon steel sheet closed assemblies into iron core, section are trapezoidal；Go out multiple levels of different size according to above method closed assembly；Multiple grades of closed assemblies are into an iron core.The present invention 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, installation time is reduced, improves frock efficiency.
Description
Technical field
The present invention relates to a kind of core structure optimisation technique, specially a kind of core structure for improving iron core filling rate and its
Shearing, assembly method.
Background technology
Iron core is the important component of power transformer, and it is both the flux circuit of transformer, is the branch of transformer again
Core is supportted, its weight accounts for more than 30 the percent of transformer gross weight, and product is bigger, and 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, it is very heavy among 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 to realize one of important method of 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
Form, its 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 (authorizing publication number CN105845427A) proposes a kind of transformer fe core section based on particle group optimizing and set
Meter method, using this design method, it can quickly try to achieve transformer core design.Chinese patent (Authorization Notice No.
CN101013624 a kind of transformer core optimal design method for cross section) is used, aid calculates, and can simplify artificial labor significantly
Traverse degree.Chinese patent (Authorization Notice No. CN201765913U) proposes a kind of novel electric power transformer fe stem, increases oil duct
Design so that its thermal diffusivity is more preferable, and preferably reduce because of heating and caused by copper loss and iron loss.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, artificial solution is liberated, improved calculating speed, but iron core has been cut not from structure
Face carries out substantial improvements, not up to preferable fill factor.
At present, electrical transformer cores typically use identical multistage rectangular cross section structure, and the width of lamination at different levels and
Thickness generally after iron core diameter determines, is uniquely determined by tabling look-up value.The effective cross section product of iron core, is directly affected
To open circuit loss, iron core diameter and internal coil diameter.Therefore, core section optimization can effectively save the manufacture of transformer
Cost, it is significant.For above present situation, from the aspect of the section material of product design and energy-conservation, it is necessary to propose a kind of
Core section optimizes structure and method, can effectively reduce transformer core cost and open circuit loss.And it disclosure satisfy that at present above-mentioned
It is required that technical scheme there is not been reported.
The content of the invention
For the deficiencies of core section filling rate in the prior art is low, iron core manufacturing cost is high and open circuit loss is big, sheet
Invention technical problems to be solved are to provide a kind of core structure and its shearing, assembly method for improving iron core filling rate.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of core structure for improving iron core filling rate of the present invention, the stem or yoke of iron core are to be tied by multistage trapezoid cross section
Structure closed assembly into polygonal cross-section, the trapezoidal adjacent base length of adjacent two-stage is identical in stem section or yoke section.
The multistage trapezoid cross section parallelism structural closed assembly.
It is overall structure or splicing construction per one-level trapezoid cross section.
The 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 several part.
The stem of iron core or the section of yoke also have rectangle, itself and the trapezoidal section for collectively constituting stem or yoke.
A kind of iron core shearing for improving iron core filling rate of the present invention, assembly method, comprise the following steps：
Silicon steel sheet coiled strip is subjected to slitting into predetermined angular by with rolling direction, forms trapezoidal material；
Trapezoidal material is cut by the progress of the length of predetermined angular and monolithic silicon steel sheet is horizontal, forms multiple monolithic silicon steel sheets；
A level by multiple monolithic silicon steel sheet closed assemblies into iron core, section are trapezoidal；
Go out multiple levels of different size according to above method closed assembly；
Multiple grades of closed assemblies are into an iron core.
Silicon-steel sheet longitudinal-shearing sawing sheet angle rolls direction no more than 3 degree with silicon steel sheet, and horizontal cut rolls direction using with silicon steel sheet
For the alternate cut mode of 40~50 degree of positive and negative knives.
Core mandrel and yoke after closed assembly form polygonal crosssection, and the global shape of iron core cross section meets to lead respectively
The Arbitrary Cross-sections requirement of post, other post, upper and lower yoke.
The invention has the advantages that and advantage：
1. compared with rolling up iron core with the three-phase stereo of capacity, single-stage core section of the present invention due to using trapezium structure,
Iron core filling rate is effectively increased, empirical tests, core material 20% can be saved, reduces cost, meanwhile, three-phase coil can be only
Vertical coiling, the stem portion after the completion of coiling again with three-dimensional folded iron core are set with, then fold again and plug yoke, closed assembly is convenient, subtracts
Few installation time, improves frock efficiency.
2. optimize iron core sawing sheet method, although adding 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 technique and technical requirements
Transformer core.
3. the present invention is using lamination process assembling iron core, can independent coiling, make loop construction even closer, enhancing is anti-
Short-circuit capacity.
Brief description of the drawings
Fig. 1 is iron core slitting sawing sheet structural representation of the present invention；
Fig. 2 is iron core transverse shearing sawing sheet structural representation of the present invention；
Fig. 3 A are the first lamination schematic diagram in iron core principal post section of the present invention；
Fig. 3 B are second of lamination schematic diagram in iron core principal post section of the present invention；
Fig. 3 C are the third lamination schematic diagram in iron core principal post section of the present invention；
Fig. 4 A are the first lamination schematic diagram of column section by iron core of the present invention；
Fig. 4 B are second of lamination schematic diagram of column section by iron core of the present invention；
Fig. 5 A are the first lamination schematic diagram in yoke section above and below iron core of the present invention；
Fig. 5 B are second of lamination schematic diagram in yoke section above and below iron core of the present invention；
Fig. 5 C are the third lamination schematic diagram in yoke section above and below iron core of the present invention；
Fig. 5 D are the 4th kind of lamination schematic diagram in yoke section above and below iron core of the present invention；
Fig. 5 E are the 5th kind of lamination schematic diagram in yoke section above and below iron core of the present invention.
Wherein, 1 is iron core column section, and 2 be level, and 3 be monolithic silicon steel sheet, and 4 be silicon steel sheet coiled strip.
Embodiment
With reference to Figure of description, the present invention is further elaborated.
A kind of core structure for improving iron core filling rate of the present invention, the stem or yoke of iron core are to be tied by multistage trapezoid cross section
Structure closed assembly into polygonal cross-section, the trapezoidal adjacent base length of adjacent two-stage is identical in stem section or yoke section.
The present embodiment provides three kinds of structure types, and the first is as shown in Figure 3A multistage trapezoid cross section parallelism structural closed assembly.
The structure is applied to the principal post that plane folds iron core.
Second as shown in Figure 3 B, and multistage trapezoid cross section structure is divided into two parts, symmetrically splices after the parallel closed assembly of each several part
For integrated iron core column section 1.The structure is applied to the principal post of three-phase solid laminated core.
It is that overall structure is the first structure per the trapezoid cross section of one-level 2, or splicing construction is the third structure, such as Fig. 3 C institutes
Show, apply the one-level in three-phase solid laminated core or the folded iron core of plane, iron core cross section trapezoidal by two or more ladders
Shape is arbitrarily assemblied to form.In practical operation, if the width of silicon steel sheet coiled strip 4 of stock be less than design width, can use with
Upper type splices, and reaches the purpose gathered materials on the spot.
Every one-level 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 iron core shearing for improving iron core filling rate of the present invention, assembly method, comprise the following steps：
1) silicon steel sheet coiled strip 4 is subjected to slitting into predetermined angular by with rolling direction, forms 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) level 2 by multiple closed assemblies of monolithic silicon steel sheet 3 into iron core column section 1, section are trapezoidal；
4) multiple levels 2 of different size are gone out according to above method closed assembly；
5) multiple closed assemblies of level 2 are into an iron core column section 1.
In step 1), silicon-steel sheet longitudinal-shearing sawing sheet angle rolls direction no more than 3 degree with silicon steel sheet, 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 one-level 2 through stack, and its cross section turns into trapezoidal, and multistage is folded
Dress, it is assembled after formed 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
Inscribed polygon structure.
In step 5), multiple grades of closed assemblies are realized into an iron core column section 1 by following steps：
Positioning 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 through silicon steel sheet positioning hole by locating rod to silicon steel sheet.
Iron core column section 1 after closed assembly is formed with inscribed trapezoidal cross section, the global shape difference of iron core cross section
Meet the Arbitrary Cross-sections requirement of principal post, other post, upper and lower yoke.
Such as apply 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 remainder is by isosceles trapezoid section closed assembly
Composition.
Or apply 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).
Or apply and fold iron core in plane, 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 using the level 2 of the trapezoid cross section in the present invention.
Claims (8)
- A kind of 1. core structure for improving iron core filling rate, it is characterised in that：The stem or yoke of iron core are by multistage trapezoidal section Face structure closed assembly into polygonal cross-section, the trapezoidal adjacent base length of adjacent two-stage is identical in stem section or yoke section.
- 2. the core structure of the raising iron core filling rate as described in claim 1, it is characterised in that：The multistage trapezoid cross section knot The parallel closed assembly of structure.
- 3. the core structure of the raising iron core filling rate as described in claim 2, it is characterised in that：Per one-level trapezoid cross section to be whole Body structure or splicing construction.
- 4. the core structure of the raising iron core filling rate as described in claim 1, it is characterised in that：The 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 several part.
- 5. the core structure of the raising iron core filling rate as described in claim 1, it is characterised in that：The stem of iron core or cutting for yoke Face also has rectangle, itself and the trapezoidal section for collectively constituting stem or yoke.
- 6. a kind of iron core shearing for improving iron core filling rate, assembly method, it is characterised in that comprise the following steps：Silicon steel sheet coiled strip is subjected to slitting into predetermined angular by with rolling direction, forms trapezoidal material；Trapezoidal material is cut by the progress of the length of predetermined angular and monolithic silicon steel sheet is horizontal, forms multiple monolithic silicon steel sheets；A level by multiple monolithic silicon steel sheet closed assemblies into iron core, section are trapezoidal；Go out multiple levels of different size according to above method closed assembly；Multiple grades of closed assemblies are into an iron core.
- 7. the iron core shearing of the raising iron core filling rate as described in claim 6, assembly method, it is characterised in that：Silicon steel sheet is indulged Cut off material angle and silicon steel sheet and roll direction no more than 3 degree, it is horizontal cut to use roll direction with silicon steel sheet as 40~50 degree of positive and negative knives Alternate cut mode.
- 8. the iron core shearing of the raising iron core filling rate as described in claim 6, assembly method, it is characterised in that：After closed assembly Core mandrel and yoke form polygonal crosssection, and the global shape of iron core cross section meets section of principal post, other post, upper and lower yoke respectively Face arbitrary shape requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981565.6A CN107658110B (en) | 2017-10-20 | 2017-10-20 | Iron core structure for improving iron core filling rate and shearing and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981565.6A CN107658110B (en) | 2017-10-20 | 2017-10-20 | Iron core structure for improving iron core filling rate and shearing and assembling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107658110A true CN107658110A (en) | 2018-02-02 |
| CN107658110B CN107658110B (en) | 2024-03-12 |
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| CN201710981565.6A Active CN107658110B (en) | 2017-10-20 | 2017-10-20 | Iron core structure for improving iron core filling rate and shearing and assembling method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847347A (en) * | 2018-08-03 | 2018-11-20 | 青岛云路先进材料技术有限公司 | A kind of method of the continuous sawing sheet of amorphous band and a kind of multistage material strip |
| CN109346289A (en) * | 2018-11-09 | 2019-02-15 | 王永法 | Transformer laminated core and preparation method thereof |
| CN109887739A (en) * | 2019-03-29 | 2019-06-14 | 中变集团上海变压器有限公司 | A kind of transformer fe core, manufacturing method |
| CN114927338A (en) * | 2022-05-31 | 2022-08-19 | 金三角电力科技股份有限公司 | Secondary tape-dividing tapping machine and machining process for three-dimensional iron core silicon steel tape |
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| FR1308463A (en) * | 1961-12-22 | 1962-11-03 | Thomson Houston Comp Francaise | Improvements in the manufacture of magnetic cores |
| US4136322A (en) * | 1975-12-05 | 1979-01-23 | Hitachi, Ltd. | Single-phase three-legged core for core type transformer |
| US4140987A (en) * | 1975-12-12 | 1979-02-20 | Hitachi, Ltd. | Core of a core-type transformer |
| CN201812661U (en) * | 2010-07-26 | 2011-04-27 | 周尧达 | Inductance ballast for high-intensity gas discharge lamp |
| CN207611666U (en) * | 2017-10-20 | 2018-07-13 | 特变电工股份有限公司 | A kind of core structure improving iron core filling rate |
-
2017
- 2017-10-20 CN CN201710981565.6A patent/CN107658110B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1308463A (en) * | 1961-12-22 | 1962-11-03 | Thomson Houston Comp Francaise | Improvements in the manufacture of magnetic cores |
| US4136322A (en) * | 1975-12-05 | 1979-01-23 | Hitachi, Ltd. | Single-phase three-legged core for core type transformer |
| US4140987A (en) * | 1975-12-12 | 1979-02-20 | Hitachi, Ltd. | Core of a core-type transformer |
| CN201812661U (en) * | 2010-07-26 | 2011-04-27 | 周尧达 | Inductance ballast for high-intensity gas discharge lamp |
| CN207611666U (en) * | 2017-10-20 | 2018-07-13 | 特变电工股份有限公司 | A kind of core structure improving iron core filling rate |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108847347A (en) * | 2018-08-03 | 2018-11-20 | 青岛云路先进材料技术有限公司 | A kind of method of the continuous sawing sheet of amorphous band and a kind of multistage material strip |
| CN109346289A (en) * | 2018-11-09 | 2019-02-15 | 王永法 | Transformer laminated core and preparation method thereof |
| CN109346289B (en) * | 2018-11-09 | 2021-11-16 | 王永法 | Transformer laminated core and preparation method thereof |
| CN109887739A (en) * | 2019-03-29 | 2019-06-14 | 中变集团上海变压器有限公司 | A kind of transformer fe core, manufacturing method |
| CN114927338A (en) * | 2022-05-31 | 2022-08-19 | 金三角电力科技股份有限公司 | Secondary tape-dividing tapping machine and machining process for three-dimensional iron core silicon steel tape |
| CN114927338B (en) * | 2022-05-31 | 2024-04-09 | 金三角电力科技股份有限公司 | Secondary belt-dividing tapping machine for three-dimensional iron core silicon steel belt and processing technology |
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| Publication number | Publication date |
|---|---|
| CN107658110B (en) | 2024-03-12 |
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