CN109346289A - Transformer laminated core and preparation method thereof - Google Patents
Transformer laminated core and preparation method thereof Download PDFInfo
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- CN109346289A CN109346289A CN201811332011.4A CN201811332011A CN109346289A CN 109346289 A CN109346289 A CN 109346289A CN 201811332011 A CN201811332011 A CN 201811332011A CN 109346289 A CN109346289 A CN 109346289A
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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
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
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Abstract
A kind of transformer laminated core, include be located at it is left and right, in column and positioned at upper and lower yoke, the column section of iron core and yoke section are by rectangle and the trapezoidal polygon formed of several grades, the rectangle is located at the centre of polygon, the trapezoidal two sides positioned at rectangle long side at different levels, and the trapezoidal bottom edge of each side successively connect after connect with rectangular long side；It is characterized by: the adjacent bottom edge length difference that the column section and adjacent two-stage in yoke section are trapezoidal, and it is bigger closer to rectangular trapezoidal bottom edge length；And the area in the yoke section is greater than the area of column section.The invention also discloses the preparation methods of above-mentioned transformer laminated core.Compared with prior art, laminated core filling rate of the invention is higher, power loss is lower, and can be reduced the replacement number of trapezoidal silicon steel slip in preparation process, and then improve production efficiency, reduces costs.
Description
Technical field
The invention belongs to transformer parts technical fields, and in particular to a kind of transformer laminated core and preparation method thereof.
Background technique
Currently, transformer iron core structure is divided into stacked and takeup type, laminated transformer iron core is by multistage different wide
The silicon steel sheet stack of degree forms, and the section of outline of core limb or yoke is round (such as the step being made of several grades of rectangles
Shown in Fig. 1), step oblong or step ellipsoidal structure.Such as application No. is the utility model patents of CN00212756.3
" a kind of distribution transformer " (Authorization Notice No. CN2431630Y), application No. is the utility model of CN201420803446.3 is special
Sharp " a kind of core construction of Three phase pentastyle high-power transformer " (Authorization Notice No. CN204257346U) is disclosed
The core construction of transformer is stacked.
In the design of existing transformer, it is a critically important link that how the section of iron core, which is designed, is related to entire
The using effect and production cost of transformer.Application No. is the patent of invention " power transformers of CN201110000854.6 thus
The optimum design method of iron beam cross-section " (Authorization Notice No. CN102208274B) by the optimal core section of Program
Design, has liberated artificial solution, has improved calculating speed, but carries out substantial improvements to core section not from structure, not
Reach ideal fill factor.
The section of laminated core generally at least needs 7 grades of steps that can just make coil inner iron core due to being staircase structural model
Filling rate reach requirement.In this way, plus man-hour requirement shear the silicon steel sheet of 7~18 kinds of specifications, a kind of specification is worked as when lamination
Silicon steel sheet stack it is complete after, the silicon steel sheet for needing replacing another specification carries out stack, operation repeatedly is so recycled, until all
The complete and obtained iron core of the equal stack of silicon steel sheet.The section factor of iron core obtained only has 90.5~93%, and filling rate is low；And it is making
It needs constantly to replace silicon steel sheet during standby, causes production efficiency low.
To overcome drawbacks described above, application No. is the application for a patent for invention of CN201710981565.6, " a kind of raising iron core is filled out
Fill core structure and its shearing, assembly method of rate " (application publication number CN107658110A) more using multistage trapezoidal composition
Side shape core section, effectively improves the filling rate of iron core, reduces iron core cost, but describes " stem section or yoke according to it
The trapezoidal adjacent bottom edge length of adjacent two-stage is identical in section " and description in conjunction with the embodiments, skilled person will appreciate that should
The manufacturing process of iron core is that the core section of a column or yoke is only sheared using a trapezoidal silicon steel sheet, and shearing level-one in this way is trapezoidal
Two side columns, center pillar, upper and lower iron yoke need replacing 5 trapezoidal and could complete, cause manufacture efficiency low, be not able to satisfy automatic
The needs of shearing and folded platform.Especially now with the use successively of automation iron core production equipment, silicon steel is replaced in equipment
The time of piece can be several times of shear time or more, if silicon steel sheet specification is more, there will be the times of handle greatly to be wasted in replacement silicon
On steel disc, and then greatly reduce the production efficiency of automation equipment.
Summary of the invention
First technical problem to be solved by this invention is the status for the prior art, provide a kind of filling rate compared with
High, the lower transformer laminated core of power loss.
Second technical problem to be solved by this invention is the status for the prior art, provides a kind of above-mentioned transformer
The preparation method of laminated core to reduce the replacement number of trapezoidal silicon steel slip, and then improves production efficiency, reduces cost.
The present invention solves technical solution used by above-mentioned first technical problem are as follows: a kind of transformer laminated core, including
Have be located at it is left and right, in column and positioned at upper and lower yoke, the column section of iron core and yoke section are by rectangle and several grades
The polygon of trapezoidal composition, the rectangle are located at the centre of polygon, the trapezoidal two sides positioned at rectangle long side at different levels,
And the trapezoidal bottom edge of each side successively connect after connect with rectangular long side；It is characterized by: the column section and yoke section
In the trapezoidal adjacent bottom edge length of adjacent two-stage it is different and bigger closer to rectangular trapezoidal bottom edge length；And the yoke
The area in section is greater than the area of column section.
In order to further increase filling rate, loss is reduced, the column section of the iron core or/and yoke section are preferably round or long
Round or elliptical inscribed polygon.
The iron core is preferably three-phase three-limb structure.
The present invention solves technical solution used by above-mentioned second technical problem are as follows: a kind of transformer as described above is folded
The preparation method of iron core, it is characterised in that include the following steps:
One, the trapezoidal corresponding level-one iron core of the first order for being located at polygonal bottom in column section and yoke section is made: will
Silicon steel sheet coiled material, which is pressed, carries out longitudinal cutting at required angle with length direction, obtains the trapezoidal silicon steel slip of the first order；With the first order
The small head end of trapezoidal silicon steel slip is starting point, is successively laterally cut along the length direction of the trapezoidal silicon steel slip of the first order, is cut out
It cuts in proper order as the identical left and right side column piece of several quantity, middle column sheet and upper and lower yoke piece, obtains the multi-disc silicon steel of level-one iron core
Piece；By the multi-disc silicon steel sheet of the level-one iron core according to size by one group of carry out lamination of a small and big monolithic or multi-disc, lamination is followed
Sequence is left and right side column piece, middle column sheet and upper and lower yoke piece, and level-one iron core is made；
Two, it makes the trapezoidal corresponding second level iron core in the second level in column section and yoke section: silicon steel sheet coiled material is pressed and length
Spend direction and carry out longitudinal cutting at required angle, obtain the trapezoidal silicon steel slip in the second level, the trapezoidal silicon steel slip in the second level it is small
The width of head end is the width that the stub end of the trapezoidal silicon steel slip of the first order after the last one upper yoke member has been cut in step 1；With
The small head end of the trapezoidal silicon steel slip in the second level is starting point, is successively laterally cut out along the length direction of the trapezoidal silicon steel slip in the second level
Cut, cut in proper order with the cutting in above-mentioned step 1 in proper order, obtain the multi-disc silicon steel sheet of second level iron core；By the more of the second level iron core
Piece silicon steel sheet on the basis of level-one iron core according to size by one group of carry out lamination of a small and big monolithic or multi-disc, lamination is in proper order
In proper order with the lamination in above-mentioned step 1, second level iron core is made, the column section of the second level iron core and yoke section are positioned at the first order
Trapezoidal top is simultaneously trapezoidal with the trapezoidal adjacent second level of the first order；
Three, it is made according to the rule of above-mentioned steps one, two after being located at rectangle side in above-mentioned column section and yoke section
The trapezoidal corresponding iron core of series needed for continuous, until obtain N grade iron cores, the column section of the N grades of iron core and yoke section for positioned at
N-1 grades of trapezoidal tops and with N-1 grades trapezoidal adjacent N grades it is trapezoidal；Wherein N is the natural number more than or equal to 2；
Four, intergrade iron core corresponding to rectangle in column section and yoke section is made: according to the ruler of transformer laminated core
It is very little that rectangle silicon steel sheet item is longitudinally cut on silicon steel sheet coiled material；The width of the rectangle silicon steel sheet item is to have cut N grades of iron in step 3
The width of the stub end of N grades of trapezoidal silicon steel slips after a most upper yoke member in the heart；One end with rectangle silicon steel sheet item is
Starting point, along the length direction of rectangle silicon steel sheet item laterally cut the identical left and right side column piece of several quantity, middle column sheet and
Upper and lower yoke piece, obtains the multi-disc silicon steel sheet of intergrade iron core；The multi-disc silicon steel sheet of intergrade iron core is made in above-mentioned steps three
N grade iron core on the basis of carry out lamination, lamination in proper order with the lamination in above-mentioned step 1 in proper order, intergrade iron core, i.e. N is made
+ 1 grade of iron core；
Five, N+2 grades of trapezoidal corresponding N+2 grades for being located at the rectangle other side in above-mentioned column section and yoke section are made
Iron core: silicon steel sheet coiled material is pressed and carries out longitudinal cutting at required angle with length direction, is obtained and N grades of trapezoidal silicon steel slip phases
The trapezoidal silicon steel slip of N+2 grades of same specification, using the small head end of N+2 grades of trapezoidal silicon steel slips as starting point, along N+2 grades
The length direction of trapezoidal silicon steel slip is successively laterally cut, cut in proper order with the cutting in above-mentioned step 1 in proper order, obtain N+2 grades
The multi-disc silicon steel sheet of iron core；By the multi-disc silicon steel sheet of N+2 grades of iron cores on the basis of N+1 grades of iron cores according to size by big and small by one
One group of carry out lamination of secondary monolithic or multi-disc, lamination in proper order with the lamination in above-mentioned step 1 in proper order, be made N+2 grades of iron cores；
Six, N+3 grades of trapezoidal corresponding N+3 grades for being located at the rectangle other side in above-mentioned column section and yoke section are made
Iron core: silicon steel sheet coiled material is pressed and carries out longitudinal cutting at required angle with length direction, is obtained and N-1 grades of trapezoidal silicon steel slips
The trapezoidal silicon steel slip of N+3 grades of same size, using the small head end of N+3 grades of trapezoidal silicon steel slips as starting point, along N+3
The length direction of the trapezoidal silicon steel slip of grade is successively laterally cut, cut in proper order with the cutting in above-mentioned step 1 in proper order, obtain N+3
The multi-disc silicon steel sheet of grade iron core；By the multi-disc silicon steel sheet of N+3 grades of iron cores on the basis of N+2 grades of iron cores according to size by big and small
One group of carry out lamination of monolithic or multi-disc, lamination in proper order with the lamination in above-mentioned step 1 in proper order, be made N+3 grades of iron cores, the N
The column section of+3 grades of iron cores and yoke section be positioned at N+2 grade trapezoidal tops and with N+2 grades trapezoidal adjacent N+3 grades it is terraced
Shape；
Seven, it is made in above-mentioned column section and yoke section according to the rule of above-mentioned steps five, six positioned at the rectangle other side
The trapezoidal corresponding iron core of series needed for subsequent obtains complete transformer laminated core until obtaining 2N+1 grades of iron cores, should
The column section of 2N+1 grades of iron cores and yoke section be positioned at 2N grade trapezoidal tops and with 2N grades trapezoidal adjacent 2N+1 grades it is terraced
Shape；
It is above-mentioned laterally cut using with length direction at the alternate cut mode of the positive and negative knife of required angle.
In order to improve the production efficiency, as an improvement, the trapezoidal silicon steel slip of same size can be by will be on silicon steel sheet coiled material
Under stack after cut out a piece of cloth in a way with the minimum material to make two or more articles of clothing.Since the trapezoidal adjacent bottom edge length of column section and adjacent two-stage in yoke section is different, even if after cutting out a piece of cloth in a way with the minimum material to make two or more articles of clothing
There are little bit differents for trapezoidal silicon steel slip, will not influence subsequent cutting and stack.
In order to improve lamination efficiency and precision quality, improve, the silicon steel sheet carries out lamination, each institute on iron core closed assembly platform
It states and offers at least one location hole on silicon steel sheet respectively, location hole can be passed through and to silicon steel by being convexly equipped on the iron core closed assembly platform
Piece carries out the locating rod of positioning closed assembly.
Preferably, crop left, the right column piece in proper order for first cut at least three pieces left side column piece, rear cut and left side column
The equal the right column piece of piece quantity；Or a left side column piece is first cut, the right column piece is cut again, cuts a left side column again
Piece so recycles, has cut at least three pieces left side column piece and the right column piece identical with left side column piece quantity.
Finally, cut upper and lower yoke piece is first to cut several lower yoke members identical with left side column piece quantity, rear sanction in proper order
Cut several upper yoke members equal with lower yoke member quantity；Or a lower yoke member is first cut, a upper yoke member is cut again, cuts one again
A lower yoke member so recycles, has cut lower yoke member identical with left side column piece quantity and upper yoke member identical with lower yoke member quantity.
Compared with the prior art, the advantages of the present invention are as follows:
1, two side columns, center pillar, the upper and lower yoke in the level-one of iron core of the present invention be cut by a trapezoidal silicon steel slip and
At, so the specification for the trapezoidal silicon steel slip that need to be used is less, be need in the prior art using trapezoidal silicon steel slip rule
Less than half of lattice improves production efficiency in this way, greatly reducing the number of replacement silicon steel sheet；
2, since the number of present invention replacement silicon steel sheet greatly reduces, so it is suitable for automation iron core production equipment, energy
While manufacturing cost and cost of labor is greatly lowered, moreover it is possible to improve lamination efficiency and quality, reduce manual handling and lamination
In the process to the loss of iron core at least 5% or more；
3, since two side columns of the invention, center pillar, upper lower yoke member are that circulation shear is folded on a trapezoidal silicon steel slip
It puts, so that the sectional area of yoke is slightly larger than the sectional area of column, and then core loss at least 1% can be reduced；And compared with existing iron core,
Core section coefficient of the invention is higher, and up to 93~98%, and the utilization rate of material improves 10% or more.
Detailed description of the invention
Fig. 1 is the column section figure of laminated transformer iron core in the prior art；
Fig. 2 is the position view of 1 middle left and right side column of the embodiment of the present invention, center pillar, upper and lower yoke；
Fig. 3 be in Fig. 2 E-E to cross-sectional view；
Fig. 4 is the structural schematic diagram of rectangle silicon steel sheet item in the embodiment of the present invention 1；
Fig. 5 is the structural schematic diagram of the trapezoidal silicon steel slip of the first order in the embodiment of the present invention 1；
Fig. 6 is the cutting schematic diagram in proper order of 1 middle left and right side column piece of the embodiment of the present invention, middle column sheet and upper and lower yoke piece；
Fig. 7 is the column section figure of transformer laminated core in the embodiment of the present invention 2；
Fig. 8 is the cutting schematic diagram in proper order of 2 middle left and right side column piece of the embodiment of the present invention, middle column sheet and upper and lower yoke piece；
Fig. 9 is the column section figure of transformer laminated core in the embodiment of the present invention 3.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment 1:
It as figures 2-6, is the embodiment 1 of transformer laminated core of the invention and preparation method thereof, which folds iron
The heart is three phase three limb core structure, as shown in Fig. 2, include be located at it is left and right, in column (respectively left side column 1, right
Side column 2, center pillar 3) and positioned at upper and lower yoke (respectively upper yoke 4, lower yoke 5).
Wherein, the column section of iron core and yoke section are polygon to be made of the rectangle A and the trapezoidal B of several grades of intergrade
Shape, as shown in figure 3, column section is inscribed ten hexagons of circle in the present embodiment, yoke section is not shown in the figure, but is also the interior of circle
Connect ten hexagons, rectangle A is located at the centre of polygon, trapezoidal B at different levels be located at rectangle A long side two sides (in the present embodiment,
There are the trapezoidal B of three-level in the two sides up and down of rectangle A respectively, so the trapezoidal B of three-level and the rectangle A of intergrade form iron core up and down
Seven level structures, from bottom to up the section of respectively level-one iron core be the trapezoidal B1 of the first order, second level iron core section be second
The trapezoidal B2 of grade, three-level iron core section be the trapezoidal B3 of the third level, level Four iron core section be rectangle A, Pyatyi iron core
Section be the trapezoidal B5 of level V, six grades of iron cores section be the 6th grade of trapezoidal B6, seven grades of iron cores section be the 7th grade
Trapezoidal B7), and the bottom edge of the trapezoidal B of each side successively connect after connect with the long side of rectangle A, it is adjacent in column section and yoke section
The adjacent bottom edge length of the trapezoidal B of two-stage is slightly different, and the bottom edge length of the trapezoidal B closer to rectangle A is bigger；Each yoke is cut
Face is different with the area of column section, and the area in yoke section is slightly larger than the area of column section.
The preparation method of above-mentioned transformer laminated core includes the following steps:
One, the trapezoidal corresponding level-one iron core of the first order in column section and yoke section: the silicon-steel sheet coiled that will need to be sheared is made
Material is placed on the discharging frame of automatic-cutting line, according to the size of transformer laminated core by silicon steel sheet coiled material press with length direction at
Required angle carries out longitudinal cutting, obtains the trapezoidal silicon steel slip of the first order, as shown in Figure 5；With the trapezoidal silicon steel slip 200 of the first order
Small head end be starting point, successively laterally cut along the length direction of the trapezoidal silicon steel slip 200 of the first order, if cut be in proper order
The identical left and right side column piece of dry quantity 11,21, middle column sheet 31 and (the trapezoidal silicon steel slip 200 of the first order of upper and lower yoke piece 51,41
Since small head end alongst width increase, due to upper and lower yoke piece 41,51 cutting in proper order left and right side column piece 11,
21 and middle column sheet 31 after so that the area of upper and lower yoke piece 41,51 is slightly larger than left and right side column piece 11,21 and middle column sheet
31, so that the area in yoke section is slightly larger than the area of column section), two location hole X are rushed in each on piece in cutting process
So as to the positioning of the next step, the multi-disc silicon steel sheet of level-one iron core is obtained；Setting can pass through location hole X on iron core closed assembly platform
Locating rod carry out automatic laminating, manipulator or other lamination devices by the multi-disc silicon steel sheet of level-one iron core according to size by small and
One group of carry out lamination of a big monolithic or multi-disc, lamination are left and right side column piece 11,21, middle column sheet 31 and upper and lower yoke piece in proper order
41,51, be made level-one iron core, the column section of the level-one iron core and yoke section be positioned at polygonal bottom the first order it is trapezoidal
B1, as shown in Figure 3；
Two, it makes the trapezoidal corresponding second level iron core in the second level in column section and yoke section: silicon steel sheet coiled material is pressed and length
It spends direction and carries out longitudinal cutting at required angle, obtain the trapezoidal silicon steel slip (not shown) in the second level, the second level is trapezoidal
The width at silicon steel slip microcephaly end is to have cut the trapezoidal silicon steel slip 200 of the first order after the last one upper yoke member 41 in step 1
The width of stub end；Using the small head end of the trapezoidal silicon steel slip in the second level as starting point, along the length of the trapezoidal silicon steel slip in the second level
Degree direction successively laterally cut, cut in proper order with the cutting in above-mentioned step 1 in proper order, in each on piece in same cutting process
Two location hole X are rushed so as to the positioning of the next step, obtain the multi-disc silicon steel sheet of second level iron core；Manipulator or other laminations dress
It sets the multi-disc silicon steel sheet of second level iron core on the basis of level-one iron core according to size by a small and big monolithic or one group of multi-disc
Carrying out lamination, (the location hole X of each on piece, which is passed through locating rod, when lamination can be realized accurate positionin, lamination, following steps
In the same way operate), lamination in proper order with the lamination in above-mentioned step 1 in proper order, be made second level iron core, as shown in figure 3, this two
The column section of grade iron core and yoke section are above the trapezoidal B1 of the first order and the second level adjacent with the trapezoidal B1 of the first order is trapezoidal
B2 is (since the starting point width of the trapezoidal silicon steel slip in the second level is that the trapezoidal silicon steel slip 200 of the first order has cut the last one upper yoke
Width after piece 41, in this way, making the adjacent bottom side length of the trapezoidal B2 in the second level and the trapezoidal B1 of the first order in column section and yoke section
Degree is different, and the bottom edge lengths of the trapezoidal B2 in the second level are longer than the upper bottom edge length of the trapezoidal B1 of the first order)；
Three, it makes the trapezoidal corresponding three-level iron core of the third level in column section and yoke section: silicon steel sheet coiled material is pressed and length
It spends direction and carries out longitudinal cutting at required angle, obtain the trapezoidal silicon steel slip (not shown) of the third level, the third level is trapezoidal
The width at silicon steel slip microcephaly end is the major part that the trapezoidal silicon steel slip in the second level after the last one upper yoke member has been cut in step 2
The width at end；Using the small head end of the trapezoidal silicon steel slip of the third level as starting point, along the length side of the trapezoidal silicon steel slip of the third level
To successively laterally cutting, cut in proper order with the cutting in above-mentioned step 1 in proper order, in cutting process each on piece rush two it is fixed
Position hole X obtains the multi-disc silicon steel sheet of three-level iron core so as to the positioning of the next step；Manipulator or other lamination devices are by three-level
The multi-disc silicon steel sheet of iron core on the basis of second level iron core according to size by one group of carry out lamination of a small and big monolithic or multi-disc,
Lamination in proper order with the lamination in above-mentioned step 1 in proper order, be made three-level iron core, as shown in figure 3, the column section of the three-level iron core and
Yoke section is and the trapezoidal B3 of the third level above the trapezoidal B2 in the second level and the third level trapezoidal B3 adjacent with the trapezoidal B2 in the second level
Bottom edge lengths be longer than the upper bottom edge length of the trapezoidal B2 in the second level；
Four, level Four iron core corresponding to rectangle in column section and yoke section is made: as shown in figure 4, by silicon steel sheet coiled material
Longitudinal direction is cut into rectangle silicon steel sheet item 100, and the width of the rectangle silicon steel sheet item 100 is to have cut the last one upper yoke member in step 3
The width of the stub end of the trapezoidal silicon steel slip of the third level afterwards；Using one end of rectangle silicon steel sheet item 100 as starting point, along rectangle
The length direction of silicon steel slip 100 laterally cut the identical left and right side column piece of several quantity, middle column sheet and upper and lower yoke piece (by
Width in the every place of rectangle silicon steel sheet item 100 is all identical, so the cutting of left and right side column piece, middle column sheet and upper and lower yoke piece is in proper order
Do not require, can be according to specific operating condition design), two location holes are rushed so as to the next step in each on piece in cutting process
Positioning, obtains the multi-disc silicon steel sheet of level Four iron core (i.e. intergrade iron core)；Manipulator or other lamination devices are by level Four iron core
Multi-disc silicon steel sheet carries out lamination on the basis of above-mentioned three-level iron core, lamination in proper order with the lamination in above-mentioned step 1 in proper order, system
Level Four iron core is obtained, the column section of the level Four iron core and yoke section are above-mentioned rectangle A, and the length of rectangle A is longer than the third level
The upper bottom edge length of trapezoidal B2；
Five, it makes the trapezoidal corresponding Pyatyi iron core of level V in column section and yoke section: silicon steel sheet coiled material is pressed and length
It spends direction and carries out longitudinal cutting at required angle, obtain the trapezoidal silicon steel of level V with the trapezoidal silicon steel slip same size of the third level
Slip (not shown), using the small head end of the trapezoidal silicon steel slip of level V as starting point, along the trapezoidal silicon steel slip of level V
Length direction successively laterally cut, cut in proper order with the cutting in above-mentioned step 1 in proper order, in each on piece in cutting process
Two location hole X are rushed so as to the positioning of the next step, obtain the multi-disc silicon steel sheet of Pyatyi iron core；Manipulator or other laminations dress
It sets the multi-disc silicon steel sheet of Pyatyi iron core on the basis of level Four iron core according to size by a big and small monolithic or one group of multi-disc
Carry out lamination, lamination in proper order with the lamination in above-mentioned step 1 in proper order, be made Pyatyi iron core, the column section and yoke of the Pyatyi iron core
Section is the top positioned at rectangle A and the level V trapezoidal B5 adjacent with rectangle A, and the bottom side length of the trapezoidal B5 of level V
Degree is less than the length of rectangle A；
Six, the 6th grade of trapezoidal six grades of corresponding iron cores in column section and yoke section are made: silicon steel sheet coiled material is pressed and length
It spends direction and carries out longitudinal cutting at required angle, obtain the 6th grade of trapezoidal silicon steel with the trapezoidal silicon steel slip same size in the second level
Slip (not shown), using the small head end of the 6th grade of trapezoidal silicon steel slip as starting point, along the 6th grade of trapezoidal silicon steel slip
Length direction successively laterally cut, cut in proper order with the cutting in above-mentioned step 1 in proper order, in each on piece in cutting process
Two location hole X are rushed so as to the positioning of the next step, obtain the multi-disc silicon steel sheet of six grades of iron cores；Manipulator or other laminations dress
It sets the multi-disc silicon steel sheet of six grades of iron cores on the basis of Pyatyi iron core according to size by a big and small monolithic or one group of multi-disc
Carry out lamination, lamination in proper order with the lamination in above-mentioned step 1 in proper order, be made six grades of iron cores, the column section and yoke of six grades of iron cores
Section is the top positioned at the trapezoidal B5 of level V and the six grade trapezoidal B6 adjacent with the trapezoidal B5 of level V, the 6th grade of trapezoidal B6's
Edge lengths of going to the bottom are less than the upper bottom edge length of the trapezoidal B5 of level V；
Seven, the 7th grade of trapezoidal seven grades of corresponding iron cores in column section and yoke section are made: silicon steel sheet coiled material is pressed and length
It spends direction and carries out longitudinal cutting at required angle, obtain the 7th grade of trapezoidal silicon steel with the trapezoidal silicon steel slip same size of the first order
Slip 300 (as shown in Figure 5), using the small head end of the 7th grade of trapezoidal silicon steel slip 300 as starting point, along the 7th grade of trapezoidal silicon steel
The length direction of slip 300 is successively laterally cut, cut in proper order with the cutting in above-mentioned step 1 in proper order, each in cutting process
A on piece rushes two location holes so as to the positioning of the next step, obtains the multi-disc silicon steel sheet of seven grades of iron cores；Manipulator or other
Lamination device by the multi-disc silicon steel sheet of seven grades of iron cores on the basis of six grades of iron cores according to size by a big and small monolithic or more
One group of carry out lamination of piece, lamination in proper order with the lamination in above-mentioned step 1 in proper order, seven grades of iron cores are made, the columns of seven grades of iron cores is cut
Face and yoke section are the top positioned at the 6th grade of trapezoidal B6 and the seven grade trapezoidal B7 adjacent with the 6th grade of trapezoidal B6, the 7th grade of ladder
Upper bottom edge length of the bottom edge lengths of shape B7 less than the 6th grade of trapezoidal B6；In this way, complete transformer laminated core is made.
As shown in fig. 6, above-mentioned laterally cut the cut mode alternate using positive and negative knife, to improve trapezoidal, rectangle silicon steel sheet
The utilization rate of item；Crop left, the right column piece 11,21 in proper order first to cut five left side column pieces 11, rear cut five the right columns
Piece 21；Then five middle column sheets 31 are cut；Cut upper and lower yoke piece 51,41 is in proper order first five lower yoke members 51 of cutting, rear cutting
Five upper yoke members 41.
Embodiment 2:
As shown in FIG. 7 and 8, it is the embodiment 2 of transformer laminated core of the invention and preparation method thereof, becomes in the present embodiment
The structure of depressor laminated core and preparation method are substantially the same manner as Example 1, difference in this present embodiment, the column section of iron core and
Yoke section is elliptical inscribed ten hexagons.
And as shown in figure 8, crop left in the present embodiment, the right column piece 11,21 in proper order first to cut a piece of left side column piece
11, a piece of the right column piece 21 is cut again, then cuts a piece of left side column piece 11, is so recycled, has been cut five left side column pieces 11 and five
Column piece 21 on the right of piece；Then five middle column sheets 31 are cut；Cut upper and lower yoke piece 51,41 is first to cut a piece of lower yoke member in proper order
51, a piece of upper yoke member 41 is cut again, cuts a piece of lower yoke member 51 again, is so recycled, has been cut five lower yoke members 51 and five upper yokes
Piece 41.
Embodiment 3:
As shown in figure 9, for the embodiment 3 of transformer laminated core of the invention and preparation method thereof, it is basic with embodiment 1
Identical, distinguishing in the column section of iron core in this present embodiment and yoke section is oval inscribed ten hexagons.
Certainly, transformer laminated core of the invention is not limited to structure disclosed in above embodiments, can also be wanted according to design
It asks, increases or decreases the series of iron core, such as can be three-level core construction, Pyatyi core construction, nine grades of core constructions, ten level-ones
Core construction, ten three-level core constructions, etc..
Claims (8)
1. a kind of transformer laminated core, include be located at it is left and right, in column and positioned at upper and lower yoke, the column section of iron core
It is by rectangle and the trapezoidal polygon formed of several grades with yoke section, the rectangle is located at the centre of polygon, described each
The trapezoidal two sides positioned at rectangle long side of grade, and the trapezoidal bottom edge of each side successively connect after connect with rectangular long side；Its
Be characterized in that: the trapezoidal adjacent bottom edge length of the column section and adjacent two-stage in yoke section is different, and closer to rectangular
Trapezoidal bottom edge length is bigger；And the area in the yoke section is greater than the area of column section.
2. transformer laminated core according to claim 1, it is characterised in that: the column section of the iron core and yoke section are circle
Oval or elliptical inscribed polygon.
3. transformer laminated core according to claim 1, it is characterised in that: the iron core is three-phase three-limb structure.
4. a kind of preparation method of transformer laminated core as described in claim 1, it is characterised in that include the following steps:
One, the trapezoidal corresponding level-one iron core of the first order for being located at polygonal bottom in column section and yoke section is made: by silicon steel
Piece coiled material, which is pressed, carries out longitudinal cutting at required angle with length direction, obtains the trapezoidal silicon steel slip of the first order；It is trapezoidal with the first order
The small head end of silicon steel slip is starting point, is successively laterally cut along the length direction of the trapezoidal silicon steel slip of the first order, cutting follows
Sequence is the identical left and right side column piece of several quantity, middle column sheet and upper and lower yoke piece, obtains the multi-disc silicon steel sheet of level-one iron core；It will
According to size by one group of carry out lamination of a small and big monolithic or multi-disc, lamination is the multi-disc silicon steel sheet of the level-one iron core in proper order
Level-one iron core is made in left and right side column piece, middle column sheet and upper and lower yoke piece；
Two, it makes the trapezoidal corresponding second level iron core in the second level in column section and yoke section: silicon steel sheet coiled material is pressed and length side
Longitudinal cutting is carried out at required angle, obtains the trapezoidal silicon steel slip in the second level, the small head end of the trapezoidal silicon steel slip in the second level
Width be step 1 in cut the trapezoidal silicon steel slip of the first order after the last one upper yoke member stub end width；With second
The small head end of the trapezoidal silicon steel slip of grade is starting point, is successively laterally cut along the length direction of the trapezoidal silicon steel slip in the second level,
Cut in proper order with the cutting in above-mentioned step 1 in proper order, obtain the multi-disc silicon steel sheet of second level iron core；By the multi-disc of the second level iron core
Silicon steel sheet on the basis of level-one iron core according to size by one group of carry out lamination of a small and big monolithic or multi-disc, lamination is same in proper order
In proper order, second level iron core is made in lamination in above-mentioned steps one, and the column section of the second level iron core and yoke section are positioned at first order ladder
It is above shape and trapezoidal with the trapezoidal adjacent second level of the first order；
Three, the subsequent institute for being located at rectangle side in above-mentioned column section and yoke section is made according to the rule of above-mentioned steps one, two
The trapezoidal corresponding iron core of series is needed, until obtain N grade iron cores, the column section of the N grades of iron core and yoke section is positioned at N-1
The trapezoidal top of grade and with N-1 grades trapezoidal adjacent N grades it is trapezoidal；Wherein N is the natural number more than or equal to 2；
Four, it makes intergrade iron core corresponding to rectangle in column section and yoke section: being existed according to the size of transformer laminated core
Rectangle silicon steel sheet item is longitudinally cut on silicon steel sheet coiled material；The width of the rectangle silicon steel sheet item is to have cut in N grades of iron cores in step 3
A most upper yoke member after N grades of trapezoidal silicon steel slips stub end width；It is starting with one end of rectangle silicon steel sheet item
End, along the length direction of rectangle silicon steel sheet item laterally cut the identical left and right side column piece of several quantity, middle column sheet and it is upper,
Lower yoke member obtains the multi-disc silicon steel sheet of intergrade iron core；By multi-disc silicon steel sheet N made from above-mentioned steps three of intergrade iron core
Grade iron core on the basis of one group of carry out lamination of a monolithic or multi-disc, lamination in proper order with the lamination in above-mentioned step 1 in proper order, system
Obtain intergrade iron core, i.e. N+1 grades of iron core；
Five, N+2 grades of trapezoidal corresponding N+2 grade iron for being located at the rectangle other side in above-mentioned column section and yoke section are made
The heart: silicon steel sheet coiled material is pressed and carries out longitudinal cutting at required angle with length direction, is obtained identical as N grades of trapezoidal silicon steel slips
The trapezoidal silicon steel slip of N+2 grades of specification, using the small head end of N+2 grades of trapezoidal silicon steel slips as starting point, along N+2 grades of ladders
The length direction of shape silicon steel slip is successively laterally cut, cut in proper order with the cutting in above-mentioned step 1 in proper order, obtain N+2 grades of iron
The multi-disc silicon steel sheet of the heart；By the multi-disc silicon steel sheet of N+2 grades of iron cores on the basis of N+1 grades of iron cores according to size by big and small primary
One group of carry out lamination of monolithic or multi-disc, lamination in proper order with the lamination in above-mentioned step 1 in proper order, be made N+2 grades of iron cores；
Six, N+3 grades of trapezoidal corresponding N+3 grade iron for being located at the rectangle other side in above-mentioned column section and yoke section are made
The heart: silicon steel sheet coiled material is pressed and carries out longitudinal cutting at required angle with length direction, is obtained and N-1 grades of trapezoidal silicon steel slip phases
The trapezoidal silicon steel slip of N+3 grades of same specification, using the small head end of N+3 grades of trapezoidal silicon steel slips as starting point, along N+3 grades
The length direction of trapezoidal silicon steel slip is successively laterally cut, cut in proper order with the cutting in above-mentioned step 1 in proper order, obtain N+3 grades
The multi-disc silicon steel sheet of iron core；By the multi-disc silicon steel sheet of N+3 grades of iron cores on the basis of N+2 grades of iron cores according to size by big and small by one
One group of carry out lamination of secondary monolithic or multi-disc, lamination in proper order with the lamination in above-mentioned step 1 in proper order, be made N+3 grades of iron cores, the N+3
The column section of grade iron core and yoke section be positioned at N+2 grade trapezoidal tops and with N+2 grades trapezoidal adjacent N+3 grades it is terraced
Shape；
Seven, it is made in above-mentioned column section and yoke section according to the rule of above-mentioned steps five, six positioned at the subsequent of the rectangle other side
The trapezoidal corresponding iron core of required series obtains complete transformer laminated core, the 2N+1 until obtaining 2N+1 grades of iron cores
The column section of grade iron core and yoke section be positioned at 2N grades of trapezoidal tops and with 2N grades trapezoidal adjacent 2N+1 grades it is trapezoidal；
It is above-mentioned laterally cut using with length direction at the alternate cut mode of the positive and negative knife of required angle.
5. the preparation method according to claim 4, it is characterised in that: the trapezoidal silicon steel slip of same size can be by by silicon
It is cut out a piece of cloth in a way with the minimum material to make two or more articles of clothing after steel disc coiled material mounted on top.
6. the preparation method according to claim 4, it is characterised in that: the silicon steel sheet is folded on iron core closed assembly platform
Piece offers at least one location hole on each silicon steel sheet respectively, and location hole can be passed through by being convexly equipped on the iron core closed assembly platform
And the locating rod of positioning closed assembly is carried out to silicon steel sheet.
7. the preparation method according to claim 4, it is characterised in that: crop left, the right column piece in proper order to be first cut to
Few three pieces left side column piece, rear cutting the right column piece equal with left side column piece quantity；Or it first cuts a left side column piece, cut again
One the right column piece cuts a left side column piece again, so recycles, cut at least three pieces left side column piece and with left side column piece quantity
Identical the right column piece；Then at least three pieces middle column sheet is cut.
8. preparation method according to claim 7, it is characterised in that: cut the several first to cut in proper order of upper and lower yoke piece
A lower yoke member identical with left side column piece quantity cuts several upper yoke members equal with lower yoke member quantity afterwards；Or first cut one
A lower yoke member cuts a upper yoke member again, cuts a lower yoke member again, so recycles, has cut identical with left side column piece quantity
Lower yoke member and upper yoke member identical with lower yoke member quantity.
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| CN201811332011.4A CN109346289B (en) | 2018-11-09 | 2018-11-09 | Transformer laminated core and preparation method thereof |
| PCT/CN2019/071111 WO2020093589A1 (en) | 2018-11-09 | 2019-01-10 | Transformer laminated core and preparation method therefor |
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| CN201811332011.4A CN109346289B (en) | 2018-11-09 | 2018-11-09 | Transformer laminated core and preparation method thereof |
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| CN109346289B CN109346289B (en) | 2021-11-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459385A (en) * | 2019-08-19 | 2019-11-15 | 梁友国 | A kind of transformer and its iron core |
| CN112309705A (en) * | 2020-11-04 | 2021-02-02 | 武汉科技大学 | A pusher that is used for transformer core silicon steel sheet to put things in good order |
| CN113990627A (en) * | 2021-09-27 | 2022-01-28 | 重庆泰昇智能电气有限公司 | Iron core and lamination tool and lamination method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114023539B (en) * | 2021-11-03 | 2023-04-07 | 无锡普天铁心股份有限公司 | Method capable of saving transformer core material |
| CN115762997A (en) * | 2022-11-16 | 2023-03-07 | 吴江变压器有限公司 | Three-stage stepped iron core dry-type distribution transformer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201788818U (en) * | 2010-09-21 | 2011-04-06 | 董振华 | Transformer silicon sheet steel processing stacking device and its stacking apparatus |
| CN205406251U (en) * | 2016-02-24 | 2016-07-27 | 广州银变电力设备有限公司 | Low loss transformer iron core structure |
| 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202102842U (en) * | 2010-12-30 | 2012-01-04 | 天威云南变压器股份有限公司 | Transformer and transformer core |
| EP3018664B1 (en) * | 2014-11-06 | 2020-06-17 | Siemens Aktiengesellschaft | Magnetic core for an an electrical induction device |
| 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 |
| CN207719017U (en) * | 2017-10-20 | 2018-08-10 | 特变电工沈阳变压器集团有限公司 | Three-phase solid laminated core structure |
| CN108257767A (en) * | 2017-12-15 | 2018-07-06 | 保定保菱变压器有限公司 | A kind of transformer iron-core structure and power transformer |
-
2018
- 2018-11-09 CN CN201811332011.4A patent/CN109346289B/en active Active
-
2019
- 2019-01-10 WO PCT/CN2019/071111 patent/WO2020093589A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201788818U (en) * | 2010-09-21 | 2011-04-06 | 董振华 | Transformer silicon sheet steel processing stacking device and its stacking apparatus |
| CN205406251U (en) * | 2016-02-24 | 2016-07-27 | 广州银变电力设备有限公司 | Low loss transformer iron core structure |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459385A (en) * | 2019-08-19 | 2019-11-15 | 梁友国 | A kind of transformer and its iron core |
| CN112309705A (en) * | 2020-11-04 | 2021-02-02 | 武汉科技大学 | A pusher that is used for transformer core silicon steel sheet to put things in good order |
| CN112309705B (en) * | 2020-11-04 | 2024-05-24 | 武汉科技大学 | Pushing device for stacking silicon steel sheets of transformer iron cores |
| CN113990627A (en) * | 2021-09-27 | 2022-01-28 | 重庆泰昇智能电气有限公司 | Iron core and lamination tool and lamination method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109346289B (en) | 2021-11-16 |
| WO2020093589A1 (en) | 2020-05-14 |
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