CN207338092U - Variable cross-section opening solid iron core - Google Patents
Variable cross-section opening solid iron core Download PDFInfo
- Publication number
- CN207338092U CN207338092U CN201721048957.9U CN201721048957U CN207338092U CN 207338092 U CN207338092 U CN 207338092U CN 201721048957 U CN201721048957 U CN 201721048957U CN 207338092 U CN207338092 U CN 207338092U
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- Prior art keywords
- silicon strip
- width
- iron core
- opening
- equal
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Abstract
The utility model discloses a kind of variable cross-section opening solid iron core, Design of Transformer iron core field.Variable cross-section opening solid iron core, including the identical single-phase iron core of three structures, each single-phase iron core is sequentially set with and is formed by the opening silicon strip frame of a folded equal in width and the opening silicon strip frame of some folded unequal widths, the upper of silicon strip frame that be open of the equal in width, is welded with rectangle silicon strip gasket on lower yoke.This variable cross-section opening solid iron core is small with no-load loss, and noise is low, and high-voltage coil and low-voltage coil coiling is quick, and suit is convenient, and up to 100%, the transformer made with it has the advantages that to save copper material silicon strip utilization rate.
Description
Technical field
It the utility model is related to transformer core, more particularly to a kind of variable cross-section opening solid iron core.
Background technology
In the prior art, three dimensional wound core employs three-dimensional triangular arranged structure, identical simultaneously per phase iron yoke length
And it is most short, while three single-phase iron cores of split are formed by continuous silicon steel tape wrapping, without seam and gap, so entirely
Three dimensional wound core magnetic resistance is small, and no-load loss is small, low noise, three-phase balance.But it also have one it is prominent the shortcomings that, i.e. its iron
Magnetic flux density in yoke is 1.154 times of magnetic flux density in core limb.The iron core magnetic flux density of this structure takes not high, highest one
As for 1.65T or so, and traditional inserted sheet laminated core can get 1.7T or so.Since the magnetic flux in the iron yoke of three dimensional wound core is close
Degree is 1.154 times of magnetic flux density in core limb, it also results in the increase of the no-load loss of iron core.This three-dimensional winding iron at the same time
The heart is enclosed construction, causes transformer high-low-voltage coil winding difficult, inefficiency.
Therefore, the no-load loss of above-mentioned three dimensional wound core and high easy to transformer how is further reduced, low-voltage coil
Coiling and suit, become the utility model two technical problems urgently to be resolved hurrily.
The content of the invention
The utility model is intended at least solve one of technical problem existing in the prior art, there is provided a kind of variable cross-section opening
Three-dimensional iron core, to solve the problems of the prior art.The variable cross-section opening solid iron core of the utility model can effectively reduce existing
There is the no-load loss of the three dimensional wound core in technology, and facilitate coiling and the suit of high-voltage coil and low-voltage coil at the same time.
One side as the utility model, there is provided a kind of variable cross-section opening solid iron core, including three structures are identical
Single-phase iron core, each single-phase iron core includes two symmetrical core limbs, two iron yokes symmetrical above and below and four
A oblique frame of identical flanging, two core limbs and two iron yokes surround octagon jointly with four oblique frames of flanging
Window, four oblique frames of flanging and the angle of cut of the core limb and the iron yoke are 45 degree, and each single-phase iron core is equal
It is connected with single-phase iron core two other described by the core limb, it is characterised in that each single-phase iron core is folded by one
The opening silicon strip frame of equal in width and some opening silicon strip frames for folding various unequal widths are sequentially set with and are formed, its
In, the width of opening silicon strip frame for folding the equal in width is identical, and if one fold and include dry plate, remaining stack institute
It is different to state the width of unequal width opening silicon strip frame, and shape in a rectangular trapezoid, and if often fold and also include dry plate,
Respectively there is one to open on two core limbs of the opening silicon strip frame of the equal in width and the opening silicon strip frame of the unequal width
Mouth seam, and it is symmetrical, zigzag is formed, the opening silicon strip frame of the every equal in width further includes rectangle silicon strip pad
Piece, the rectangle silicon strip gasket are located at the upper of the opening silicon strip frame of the equal in width, on lower yoke, the every length
The both sides of square silicon strip gasket in the width direction with every described equal in width opening silicon strip frame iron yoke surface phase
Welding.The width of the rectangle silicon strip gasket is of same size with the opening silicon strip frame of the equal in width, described rectangular
The length that the length of shape silicon strip gasket is equal to the iron yoke of the opening silicon strip frame of the equal in width subtracts twice of rectangle
The thickness of silicon strip gasket.
Preferably, the single-phase iron core is by an opening silicon strip frame for folding the equal in width and the opening of six folded unequal widths
Silicon strip frame, which is sequentially set with, to be formed, and the 3rd is stacked as the opening silicon strip frame of the equal in width, and first it is folded it is described not
Equal in width opening silicon strip frame is located at the internal layer close to the single-phase iron core, and the 7th folds the opening silicon strip frame of the unequal width
Positioned at the outer layer of the single-phase iron core.
Preferably, the thickness of the rectangle silicon strip gasket in 0.15mm between 0.30mm.
Preferably, the core limb of each single-phase iron core is respectively between the core limb of single-phase iron core two other described
Insulation grid is set and is connected by binding agent.
Preferably, the outer surface of the core limb and the iron yoke is coated with binding agent Bing Chan around insulation strip.
Change provided by the utility model sections mouth solid iron core, is grown by increasing at the iron yoke position of each single-phase iron core
Square silicon strip gasket so that the cross-sectional area of iron yoke is more than the cross-sectional area of core limb, and this structure can effectively reduce iron
The magnetic flux density of yoke, so that the no-load loss of each single-phase iron core is reduced, and each single-phase iron core is by several equal in widths
Opening silicon strip frame and the opening silicon strip frame of several unequal widths are sequentially set with and form, and this structure is easy to transformation
Device is high, and the coiling and installation of low-voltage coil, substantially increase production efficiency.
Brief description of the drawings
Fig. 1 is the structure diagram of variable cross-section opening solid iron core provided by the utility model
Fig. 2 is the structure diagram of single-phase iron core provided by the utility model
Fig. 3 is the structure diagram of the opening silicon strip frame of equal in width provided by the utility model
Fig. 4 is the upper of the opening silicon strip frame of equal in width provided by the utility model, increases rectangle silicon ribbon on lower yoke
The structure diagram of gasket
Fig. 5 is seven sections of strip development schematic diagrames of the single-phase iron core of composition provided by the utility model
Embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be appreciated that herein
Described embodiment is only used for describing and explaining the present invention, and is not intended to limit the present invention.
As the one side of the utility model, as depicted in figs. 1 and 2, there is provided a kind of variable cross-section opening solid iron core 10,
Including the identical single-phase iron core 100 of three structures, each single-phase iron core 100 includes two symmetrical core limbs
110, the iron yokes 120 and the oblique frame 130 of four identical flangings of about two docking, described in two core limbs 110 and two
Iron yoke 120 and four oblique frames 130 of flanging surround octagon window 140 jointly, each single-phase iron core 100 with addition
Two single-phase iron cores 100 are connected by the core limb 110.As shown in Figure 3 and Figure 4, each single-phase iron core 100 is equal
Sequentially it is set with by the opening silicon strip frame 333 of a folded equal in width and the opening silicon strip frame 222 of some folded unequal widths
Formed, wherein, one fold the equal in width opening silicon strip frame 333 width be it is identical, and one fold include it is some
Piece, it is positioned at the centre position of the single-phase iron core suit.The width of the opening silicon strip frame 222 of remaining unequal width
It is different, and shape in a rectangular trapezoid, and if often fold and also include dry plate, they are respectively positioned at the single-phase iron core suit
Inner layer and outer layer.
As shown in figure 4, the opening silicon strip frame 333 of the equal in width and the opening silicon strip frame 222 of the unequal width
Two core limbs on respectively have an open seam 223, it is and symmetrical, form zigzag.
As shown in figure 3, the opening silicon strip frame 333 of the equal in width further includes rectangle silicon strip gasket 400, the length
Square silicon strip gasket 400 is located at the upper of the opening silicon strip frame 333 of the equal in width, on lower yoke, the every rectangle
The both sides of the silicon strip gasket 400 surface phase with the iron yoke of the opening silicon strip frame 333 of equal in width this described in the width direction
Welding, the width of the rectangle silicon strip gasket 400 are of same size with the opening silicon strip frame 333 of the equal in width, institute
The length for stating rectangle silicon strip gasket 400 subtracts two equal to the length of the iron yoke of the opening silicon strip frame 333 of the equal in width
The thickness of the rectangle silicon strip gasket 400 again.
In order to reduce the no-load loss of variable cross-section opening solid iron core of the prior art, the magnetic flux reduced in iron yoke is close
Degree, it is to be understood that the upper of silicon strip frame 333 that be open of the every equal in width, is both provided with described rectangular on lower yoke
Shape silicon strip gasket 400, the quantity of the rectangle silicon strip gasket 400 of setting is preferably a piece of or two panels, certainly in work
Skill can also increase rectangle silicon strip gasket 400 described in multi-disc, the rectangle silicon strip pad of setting in the case of allowing
The piece number of piece 400 is more, and the cross-sectional area of the iron yoke is bigger, and magnetic flux density just reduces more.
According to the material of used silicon strip, specifically, the thickness of the rectangle silicon strip gasket 400 is in 0.15mm
To between 0.30mm.
The manufacture craft of the variable cross-section opening solid iron core is described below.
As shown in figure 5, silicon strip is cut into according to design requirement by seven sections of silicon that width meets production requirement with slitter
First segment to the 7th section of silicon strip billot, is then carried out oblique line sawing sheet by steel band billot respectively with cutting machine, for 100% utilization
Silicon strip, oblique line sawing sheet are designed to complimentary fashion.Seven sections of material strips of A1, A2, A3, A4, A5, A6 and A7 are formed after sawing sheet,
The material strip of first segment A1 to the 7th sections of A7, is welded successively with laser end to end, then using numerical control fixed-length bending and the method cut
It will be formed per sheet stock, and form the opening silicon strip frame 333 of the equal in width with open seam 223 and opening for unequal width
Mouth silicon strip frame 222, for the opening silicon strip frame of every equal in width, also wants cushioning rectangle silicon in the upper of it, lower yoke
Steel band gasket, the both sides of rectangle silicon strip gasket in the width direction with the iron yoke of the opening silicon strip frame of equal in width this described
Mutually weld on surface.The opening silicon strip frame of these shapings is set with successively according to sequencing and certain rule, is just formed
The single-phase iron core of the utility model.Anneal to being put into after single-phase iron core progress shaping in vacuum annealing furnace, it is described true
The furnace temperature of empty annealing furnace is maintained between 800 degree to 820 degree, and vacuum is not less than 100 pas.
Variable cross-section opening solid iron core provided by the utility model, overcomes the magnetic flux of three dimensional wound core of the prior art
The shortcomings that density is not high, by increasing rectangle silicon strip gasket at iron yoke position, adds the cross-sectional area of iron yoke, effectively
The magnetic flux density of iron yoke is reduced, so as to reduce the no-load loss of variable cross-section opening solid iron core, and largely saves coiling line
The consumed copper material of circle.
By taking the method shown in scheming as an example, in upper, the equal cushioning on lower yoke of the opening silicon strip frame described in the 3rd section
The rectangle silicon strip gasket, and the both ends of the rectangle silicon strip gasket with the 3rd section of opening silicon strip frame
Iron yoke surface soldered, form two straight beads, increase iron yoke cross-sectional area while can form good lead
Magnetic.In addition the piece number of the increased rectangle silicon strip gasket is more, the cross-sectional area of the iron yoke be increased by it is bigger, so
The magnetic flux density being greatly lowered in iron yoke so that the no-load loss of whole variable cross-section opening solid iron core is greatly lowered,
According to theoretical calculation, the no-load loss energy Enough reaches the level of national standard S15.In addition can be in the situation of the influence from iron yoke
Down so that the operating magnetic field flux density of the core limb reaches 1.75T or so, so that the variable cross-section opening solid iron core is made
Three-phase transformer, its copper and iron cost declines 20% or so.
It is understood that embodiment of above is merely to illustrate that the principle of the utility model and uses exemplary
Embodiment, but the utility model is not limited thereto.For those skilled in the art, this is not being departed from
In the case of the spirit and essence of utility model, various changes and modifications can be made therein, these variations and modifications are also considered as this reality
With new protection domain.
Claims (5)
1. variable cross-section opening solid iron core, including the single-phase iron core that three structures are identical, each single-phase iron core includes two
A symmetrical core limb, two iron yokes symmetrical above and below and four oblique frames of identical flanging, two core limbs and two
A iron yoke and four oblique frames of flanging surround octagonal window jointly, four oblique frames of flanging respectively with the iron
Stem and the angle of cut of the iron yoke are 45 degree, and each single-phase iron core passes through described with single-phase iron core two other described
Core limb is connected, it is characterised in that each single-phase iron core is by the opening silicon strip frame of a folded equal in width and some folded
The opening silicon strip frame of various unequal widths, which is sequentially set with, to be formed, wherein, one folds the opening silicon steel of the equal in width
Width with frame is identical, and if including dry plate, the width of the opening silicon strip frame of unequal width described in remaining stack
It is different, and shape in a rectangular trapezoid, and if often fold and also include dry plate, the opening silicon strip frame of the equal in width and described
Respectively there is an open seam on two core limbs of the opening silicon strip frame of unequal width, and it is symmetrical, zigzag is formed, often
The opening silicon strip frame of equal in width described in piece further includes rectangle silicon strip gasket, and the rectangle silicon strip gasket is positioned at described
The upper of silicon strip frame that be open of equal in width, on lower yoke, the both sides of the every rectangle silicon strip gasket are equal in the width direction
Mutually welded with the surface of the iron yoke of the opening silicon strip frame of the equal in width, the width of the rectangle silicon strip gasket with it is described
The opening silicon strip frame of equal in width is of same size, and the length of the rectangle silicon strip gasket is equal to the opening of the equal in width
The length of the iron yoke of silicon strip frame subtracts the thickness of twice of rectangle silicon strip gasket.
2. variable cross-section opening solid iron core according to claim 1, it is characterised in that the single-phase iron core is folded described by one
The opening silicon strip frame of equal in width and the six opening silicon strip frames for folding the unequal width are sequentially set with and are formed, and the 3rd
The opening silicon strip frame of the equal in width is stacked as, remaining is the opening silicon strip frame of unequal width, and first folds described differ
Width opening silicon strip frame is located at the internal layer close to the single-phase iron core, and the 7th folds the opening silicon strip frame position of the unequal width
In the outer layer of the single-phase iron core.
3. variable cross-section opening solid iron core according to claim 1, it is characterised in that the rectangle silicon strip gasket
Thickness is in 0.15mm between 0.30mm.
4. the variable cross-section opening solid iron core according to any one in claim 1 to 2, it is characterised in that each list
Insulation grid is set between the core limb of the core limb of phase iron core and two other single-phase iron core and is connected by binding.
5. the variable cross-section opening solid iron core according to any one in claim 1 to 2, it is characterised in that the core limb
Binding agent is coated with the outer surface of the iron yoke and winds insulation strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721048957.9U CN207338092U (en) | 2017-08-18 | 2017-08-18 | Variable cross-section opening solid iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721048957.9U CN207338092U (en) | 2017-08-18 | 2017-08-18 | Variable cross-section opening solid iron core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207338092U true CN207338092U (en) | 2018-05-08 |
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ID=62373071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721048957.9U Expired - Fee Related CN207338092U (en) | 2017-08-18 | 2017-08-18 | Variable cross-section opening solid iron core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207338092U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411208A (en) * | 2017-08-18 | 2019-03-01 | 吴茂安 | The three-dimensional iron core of variable cross-section opening |
| CN110911120A (en) * | 2019-12-05 | 2020-03-24 | 青岛云路先进材料技术股份有限公司 | Transformer core and amorphous alloy iron core single frame |
-
2017
- 2017-08-18 CN CN201721048957.9U patent/CN207338092U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411208A (en) * | 2017-08-18 | 2019-03-01 | 吴茂安 | The three-dimensional iron core of variable cross-section opening |
| CN110911120A (en) * | 2019-12-05 | 2020-03-24 | 青岛云路先进材料技术股份有限公司 | Transformer core and amorphous alloy iron core single frame |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |