CN101447298A - Gap-butt amorphous single core with approximate-circle cross-section - Google Patents

Abstract

The invention relates to a gap-butt amorphous single core with an approximate-circle cross-section. The gap-butt amorphous single core is formed by packing a plurality of amorphous core plates in sequence; the amorphous core plates are divided into a plurality of butt groups with different lengths, the two ends of one butt group are butted with each other, a micro seam with equivalent width inside and outside is kept at the butt position, and the micro seams of different butt groups are positioned at a distance along the tangential direction of the core; the amorphous core plates have different widths; the amorphous core plates in the middle of a core limb are wider than the amorphous core plates at the two sides of the core limb; the amorphous core plates are divided into a plurality of equivalent width groups, and the widths of the amorphous core plates in one equivalent width group are same; the shape of the cross-section of the core limb is symmetric inside and outside, and the two ends of the cross-section take the shape of symmetric steps. The gap-butt amorphous single core of the invention has good effect of magnetic conduction, is not only beneficial to saving the usage of copper in a coil but also beneficial to preventing the insulating materials of the coil from being damaged by extrusive corner angles and is mainly used in various amorphous transformers.

Description

The amorphous single core of gap dock cross section approximate circle

Technical field

The present invention relates to a kind of amorphous single core of gap dock cross section approximate circle, belong to technical field of electricity.

Technical background

Amorphous core is folded built in together by several layers amorphous core sheet, form the electromagnetic field loop of a closure, be used on equipment such as transformer, transmitting magnetic flux, on the core limb of both sides unshakable in one's determination, put coil, produce alternating magnetic field behind the coil electricity, by iron core the magnetic flux in this magnetic field is passed to another coil to form induced current, realize the effect of energy delivery and transformation thus, the width of each layer amorphous core sheet all is identical in the amorphous core at present, the cross section of Xing Chenging is rectangular thus, the loop coil that is enclosed within on the core limb also should be rectangular, could adapt with the shape of core limb.Adopt this core construction, the copper consumption of coil is bigger, and the corner angle of corner unshakable in one's determination damage the insulating material on the coil easily.In addition, for coil being enclosed within on the amorphous core, at least one self joint usually will be set on amorphous core, leave seam at joint, from this seam amorphous core is opened and to be taken the shape of the letter U, just can be enclosed within on two arms of this U-shaped by coil, join to together after the bending again at two ends then, form rectangular core U-shaped.If directly with the two ends butt joint, the iron core of joint is interrupted at joint, will produce very big magnetic resistance, influence the transmission of magnetic flux, therefore need improve engaging structure Moments shape.

Summary of the invention

For overcoming the above-mentioned defective of prior art, the invention provides a kind of amorphous single core of gap dock cross section approximate circle, adopt this iron core to help reducing the copper consumption of coil, cause damage can for the insulating material of coil, and can prevent increasing considerably of magnetic resistance effectively, guarantee the transmission of magnetic flux.

The present invention realizes that the technical scheme of above-mentioned purpose is: a kind of amorphous single core of gap dock cross section approximate circle, form by the folded successively system of some amorphous core sheets, described some amorphous core sheets are divided into some butt joint groups that are uneven in length, dock mutually at the two ends of same butt joint group, joint has a small seam that the inside and outside is wide, the small seam of different butt joint groups on the tangential direction of iron core at a distance of a segment distance, described some amorphous core sheets also have different width, and the width of amorphous core sheet that is positioned at the core limb mid portion is greater than the width of the amorphous core sheet that is positioned at the core limb both sides.

The invention has the beneficial effects as follows: because the small seam of adjacent difference butt joint group is not together, any one small seam is all covered by the lamination of adjacent set, realized the connection of this small seam by the lamination of adjacent set, reduced the influence of seam thus effectively, improved performance unshakable in one's determination the magnetic flux transmission capacity; Because these small seams are wide, can be controlled in the minimum scope according to machining accuracy, therefore guaranteed at certain condition seam to be limited in minimum to the influence of magnetic flux conductive, the seam between the same lamination group two ends of avoiding occurring occurring owing to each lamination equal in length in the same lamination group is the problem of wedge shape expansion; Owing to be positioned at the width difference of the lamination of core limb different parts, formed the shape that is similar to circular arc of intermediate projections at the two ends of core limb cross section, the corresponding two ends that are enclosed within the coil on the core limb also are the shape of approximate circular arc, under identical area of section, the girth of the coil of this shape is little, helps saving the copper consumption of coil; In addition, want level and smooth many, do not have the sort of very outstanding rectangle corner angle, so should not damage the insulating material of coil because existing relatively square-section, the edge of core limb is unshakable in one's determination.

Description of drawings

Fig. 1 is the partial cross section unshakable in one's determination structural representation that the present invention relates to the core limb cross sectional shape;

Fig. 2 is the core section structural representation that the present invention relates to the core limb cross sectional shape;

Fig. 3 is the main TV structure schematic diagram that the present invention relates to docking mode.

Embodiment

Referring to Fig. 1-3, the invention provides a kind of amorphous single core of gap dock cross section approximate circle, form by the folded successively system of some amorphous core sheets, form by the folded successively system of some amorphous core sheets, described some amorphous core sheets are divided into some butt joint groups that are uneven in length, dock mutually at the two ends of same butt joint group, joint has a small seam 300 that the inside and outside is wide, the small seam of different butt joint groups on the tangential direction of iron core at a distance of a segment distance, described some amorphous core sheets also have different width, and the width of amorphous core sheet that is positioned at the core limb mid portion is greater than the width of the amorphous core sheet that is positioned at the core limb both sides.

The small seam of described adjacent butt joint group can be identical in the distance on the tangential direction unshakable in one's determination.

The small seam of described each butt joint group can be distributed on same the oblique line.

The small seam of described each butt joint group can be alternately distributed on the oblique line of two symmetries, and the distance between these two oblique lines enlarges from inside to outside gradually.

The small seam of described lamination group can be in the certain area coverage of a side of iron core, an edge definite tangential direction unshakable in one's determination is from inside to outside along definite tangential direction cycle arrangement unshakable in one's determination from inside to outside, both from the starting point (point in the middle of can being usually, also can be this zone the starting point on this tangential direction or other in this zone more arbitrarily) sequence arrangement on this tangential direction, after being aligned to this zone finishing line, return this regional starting line again along this tangential direction sequence arrangement, so circulation has repeatedly all been arranged until described small seam.This arrangement mode, be adapted to the many situations of lamination number of packet, and can make on tangential direction unshakable in one's determination, to have bigger distance between the adjacent small seam,, improve performance unshakable in one's determination by increasing the distance and the number of packet that increases lamination on the tangential direction.

Can determine the grouping situation of lamination butt joint group according to the performance requirement of iron core.

The number of packet of lamination butt joint group is many more, and the complexity of processing is big more, but performance unshakable in one's determination is good more.

For guaranteeing performance unshakable in one's determination, should reduce the width of small seam as much as possible, the width of this seam determined by the girth unshakable in one's determination of corresponding lamination length and this lamination position, should consider the machining accuracy of manufacture process unshakable in one's determination simultaneously and add machining accuracy when installing coil in transformer factory.

Described amorphous core sheet can also be divided into some wide group, and the width of same wide group of each interior amorphous core sheet equates, under the situation that guarantees actual effect, reduces difficulty of processing as much as possible thus.

Can comprise several butt joint groups in described same wide group.

Because this wide group setting, the cross sectional shape of described core limb can be about symmetrical, and two ends are the stairstepping of symmetry.

For example, described amorphous core sheet can be divided into six wide group 111,112,113,121,122,123, width equates in twos, two wide group 113,123 the amorphous core sheet that is arranged in the core limb mid portion is the wideest, two wide group 111,121 the amorphous core sheet that is arranged in the core limb both sides is the narrowest, and two wide group 112,122 the amorphous core sheet width that is arranged between the two is placed in the middle.

Also can adopt the packet mode of other laminations, for example be divided into eight groups or four groups.When being divided into eight groups, in the both sides of the symmetrical center line in core limb cross section wide group of the fourth class is arranged respectively, different wide group width reduces to both sides successively from symmetrical center line, has formed the stepped of symmetry thus; When being divided into four groups, the width of two wide group amorphous core sheet that is positioned at the core limb mid portion is greater than the width of two wide group of amorphous core sheets that are positioned at both sides.

Wide group number of packet is many more, and the core limb cross-sectional shape is level and smooth more, the trouble more but processing is got up.Therefore can take all factors into consideration the packet mode of lamination according to the performance requirement of iron core, size and process equipment and the many-sided factor of processing quantity unshakable in one's determination, on cost and performance, obtain the balance point an of the best.

Stand out between each wide group should make that the shape at two ends, core limb cross section is a circular arc or other level and smooth arcs generally.

According to applicant's experiment, the amorphous core structure of this cross section approximate circle also helps improves performance unshakable in one's determination, helps reducing sectional area unshakable in one's determination, and then reduces consumption of materials unshakable in one's determination.

This amorphous core can adopt existing mode to make, and the amorphous steel band of employing different in width is sheared out the amorphous core sheet of different in width, can adopt existing various packaged type and joint design.

The main TV structure of this amorphous core is generally the straight-flanked ring of four angular distortions.Described core limb is two vertical sides of this straight-flanked ring.

Amorphous core of the present invention can be used for transformer or other similar products of twin coil singlecore.

Claims (10)

1. the amorphous single core of a gap dock cross section approximate circle, form by the folded successively system of some amorphous core sheets, it is characterized in that described some amorphous core sheets are divided into some butt joint groups that are uneven in length, dock mutually at the two ends of same butt joint group, joint has a small seam that the inside and outside is wide, the small seam of different butt joint groups on the tangential direction of iron core at a distance of a segment distance, described some amorphous core sheets also have different width, and the width of amorphous core sheet that is positioned at the core limb mid portion is greater than the width of the amorphous core sheet that is positioned at the core limb both sides.

2. the amorphous single core of gap dock cross section approximate circle as claimed in claim 1 is characterized in that the distance of small seam on tangential direction unshakable in one's determination of described adjacent butt joint group is identical.

3. the amorphous single core of gap dock cross section approximate circle as claimed in claim 2 is characterized in that the small seam of described each butt joint group is distributed on same the oblique line.

4. the amorphous single core of gap dock cross section approximate circle as claimed in claim 1 is characterized in that the small seam of described each butt joint group is alternately distributed on the oblique line of two symmetries, and the distance between these two oblique lines enlarges from inside to outside gradually.

5. the amorphous single core of gap dock cross section approximate circle as claimed in claim 1, the small seam that it is characterized in that described butt joint group are in the certain area coverage of a side of iron core, from inside to outside along definite tangential direction cycle arrangement unshakable in one's determination.

6. as the amorphous single core of claim 1,2,3,4 or 5 described gap dock cross section approximate circles, it is characterized in that described amorphous core sheet is divided into some wide group, the width of same wide group amorphous core sheet equates.

7. the amorphous single core of gap dock cross section approximate circle as claimed in claim 6 is characterized in that the cross sectional shape of described core limb is about symmetrical, and two ends are the stairstepping of symmetry.

8. the amorphous single core of gap dock cross section approximate circle as claimed in claim 7, it is characterized in that described amorphous core sheet is divided into six wide group, width equates in twos, wherein is positioned at two wide group the wideest of core limb mid portion, is positioned at two wide group the narrowest of core limb both sides.

9. the amorphous single core of gap dock cross section approximate circle as claimed in claim 7, it is characterized in that described amorphous core sheet is divided into eight wide group, both sides at the symmetrical center line in core limb cross section respectively are four wide group, and each width of wide group reduces to both sides successively from symmetrical center line.

10. the amorphous single core of gap dock cross section approximate circle as claimed in claim 7, it is characterized in that described amorphous core sheet is divided into four wide group, two wide group the width that wherein is positioned at the core limb mid portion is greater than two wide group the width that is positioned at both sides.

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