CN101447289A

CN101447289A - Gap-butt three-phase three-limb amorphous core device with approximate-circle cross-section

Info

Publication number: CN101447289A
Application number: CNA2008101141406A
Authority: CN
Inventors: 徐继斌; 何力; 张卫国; 徐磊
Original assignee: BEIJING ZHONGJI LIANGONG AMORPHOUS TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: BEIJING ZHONGJI LIANGONG AMORPHOUS TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2008-05-30
Filing date: 2008-05-30
Publication date: 2009-06-03

Abstract

The invention relates to a gap-butt three-phase three-limb amorphous core with an approximate-circle cross-section, comprising an outer amorphous core, two inner amorphous cores and three coils. The two inner amorphous cores are positioned in the middle hole of the outer amorphous core side by side; the amorphous cores are formed by packing a plurality of amorphous core plates, wherein, the core plates of one amorphous core are divided into a plurality of butt groups with different lengths, and the two ends of one butt group are butted at the bonding land of the cores to form a micro seam with equivalent width; the amorphous core plates have different widths, the amorphous core plates arranged inside the outer core are wider than the amorphous core plates arranged outside, and the amorphous core plates arranged outside the inner cores are wider than the amorphous core plates arranged inside; and the coils are respectively sheathed on corresponding core limbs. The gap-butt three-phase three-limb amorphous core of the invention has compact structure, is beneficial to saving the usage of copper in the coils, prevents the insulating materials of the coils from being damaged by extrusive corner angles and is mainly used in corresponding amorphous transformers.

Description

The gap dock three-phase three-limb amorphous core device of cross section approximate circle

Technical field

The present invention relates to a kind of gap dock three-phase three-limb amorphous core device of cross section approximate circle, belong to technical field of electricity, mainly can be used for various many iron-core transformers.

Technical background

The amorphous core of existing many iron-core transformers is folded built in together by several layers amorphous core sheet, form the electromagnetic field loop of a closure, be used to transmit 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 in the present same amorphous core all is identical, the cross section of the side arm unshakable in one's determination 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.

Summary of the invention

For overcoming the above-mentioned defective of prior art, the invention provides a kind of gap dock three-phase three-limb amorphous core device of cross section approximate circle, adopt this combination unshakable in one's determination to help reducing the copper consumption of coil, and be difficult for giving the insulating material of coil and cause damage because of corner angle unshakable in one's determination.

The present invention realizes that the technical scheme of above-mentioned purpose is: a kind of gap dock three-phase three-limb amorphous core device of cross section approximate circle, comprise an outer amorphous core, two interior amorphous cores and three coils, described two interior amorphous cores are positioned at the mesopore of described outer amorphous core side by side, a side arm of a side arm of amorphous core and another amorphous inner iron core is adjacent in each, another side arm is adjacent with a side arm of outer amorphous core, adjacent side arm constitutes core limb, each amorphous core forms by the folded system of some amorphous core sheets, amorphous core sheet in described arbitrary amorphous core is 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, the amorphous core sheet of described same amorphous core also has different width, the width that is positioned at inboard amorphous core sheet in the described outer iron core is greater than the width that is positioned at inboard amorphous core sheet, the width of the amorphous core sheet outside being positioned in described each inner iron core is greater than the width that is positioned at inboard amorphous core sheet, the two ends of described each core limb cross section all are the shape that is similar to arc of intermediate projections, described each coil is enclosed within respectively on each self-corresponding core limb, and the two ends of each coil are respectively and the similar arc in described core limb two ends.

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; Because two amorphous cores are installed in the mesopore of outer amorphous core, effectively utilized the space thus, reduced integrally-built volume unshakable in one's determination; Because the width of the amorphous core sheet outside being positioned on the same iron core is greater than the width that is positioned at inboard amorphous core sheet, when the adjacent side arm of two iron cores constitutes a core limb, the amorphous core sheet that is positioned at the core limb mid portion is wideer than the amorphous core sheet that is positioned at the core limb side, formed the shape that is similar to circular arc or other arcs of intermediate projections thus at the two ends of core limb cross section, correspondingly, the two ends that are enclosed within the coil on the core limb also are the shape of approximate circular arc or other arcs, therefore under identical area of section, the girth of the coil of this shape is little, help saving the copper consumption of coil, simultaneously, because the edge of existing relatively square-section, the edge of core limb iron core wants much level and smooth, do not have the sort of very outstanding rectangle corner angle, therefore effectively avoided the phenomenon of rectangle corner angle infringement coil insulation material.

Description of drawings

Fig. 1 the present invention relates to join partial cross section's structural representation of core side arm of two of core limb cross sectional shape;

Fig. 2 is a main TV structure schematic diagram of the present invention;

Fig. 3 is the schematic diagram that the present invention relates to docking structure unshakable in one's determination.

Embodiment

Referring to Fig. 1-2, the invention provides a kind of gap dock three-phase three-limb amorphous core device of cross section approximate circle, comprise an outer amorphous core 110, two interior amorphous cores 120 and three coils 400, described two interior amorphous cores are positioned at the mesopore of described outer amorphous core side by side, a side arm of a side arm of amorphous core and another amorphous inner iron core is adjacent in each, another side arm is adjacent with a side arm of outer amorphous core, adjacent side arm constitutes core limb, amorphous core sheet in described arbitrary amorphous core is 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, the amorphous core sheet of described same amorphous core also has different width, the width that is positioned at inboard amorphous core sheet in the described outer iron core is greater than the width that is positioned at inboard amorphous core sheet, the width of the amorphous core sheet outside being positioned in described each inner iron core is greater than the width that is positioned at inboard amorphous core sheet, the two ends of described each core limb cross section all are the shape that is similar to arc of intermediate projections, described each coil is enclosed within respectively on each self-corresponding core limb, and the two ends of each coil are respectively and the similar arc in described core limb two ends.

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

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

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.

The small seam of described lamination group is 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 that this zone is in the starting point on this tangential direction) 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 according to the performance requirement of iron core.

The number of packet of lamination is many more, and many more to the requirement of frock, 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.

The described amorphous core sheet of described same iron core can also be divided into some groups, and the width of same group amorphous core sheet equates, under the situation that guarantees actual effect, reduces difficulty of processing as much as possible thus.

The shape of cross section of described core limb is a left-right symmetric, and two ends are the stairstepping of symmetry.

For example, the amorphous core sheet of described same amorphous core can be divided into three groups, it is the wideest to be positioned at one group of inboard amorphous core sheet in the described outer iron core, the one group of amorphous core sheet that is positioned at the outside is the narrowest, the one group of amorphous core sheet that is positioned at the outside in the described inner iron core is the wideest, and it is the narrowest to be positioned at one group of inboard amorphous core sheet.In the embodiment shown in fig. 1, amorphous core sheet on described outer iron core and the described inner iron core is divided into three groups, amorphous core sheet group on one of them inner iron core indicates with 111,112,113 respectively, and the amorphous core sheet group on the outer iron core indicates with 121,122,123 respectively.

Amorphous core sheet on the same iron core also can adopt other packet modes, for example is divided into four groups or two groups.When being divided into four groups, the amorphous core sheet width of described outer each amorphous core sheet group unshakable in one's determination increases from outside to inside successively, and the amorphous core sheet width of each amorphous core sheet group of described inner iron core increases from inside to outside successively; When being divided into two groups, the described outer width of the width of that inboard group amorphous core sheet greater than the amorphous core in the outside unshakable in one's determination, superolateral that group amorphous core sheet width of described inner iron core is greater than the width of the amorphous core sheet of inboard.

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

Each stand out of organizing between the amorphous core sheet 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, this amorphous core structure 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.

The main TV structure of described each amorphous core is generally the straight-flanked ring of four angular distortions.

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.

Claims

1. the gap dock three-phase three-limb amorphous core device of a cross section approximate circle, comprise an outer amorphous core, two interior amorphous cores and three coils, described two interior amorphous cores are positioned at the mesopore of described outer amorphous core side by side, a side arm of a side arm of amorphous core and another amorphous inner iron core is adjacent in each, another side arm is adjacent with a side arm of outer amorphous core, adjacent side arm constitutes core limb, it is characterized in that each amorphous core forms by the folded system of some amorphous core sheets, it is characterized in that the amorphous core sheet in described arbitrary amorphous core is 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, the amorphous core sheet of described same amorphous core also has different width, the width that is positioned at inboard amorphous core sheet in the described outer iron core is greater than the width that is positioned at inboard amorphous core sheet, the width of the amorphous core sheet outside being positioned in described each inner iron core is greater than the width that is positioned at inboard amorphous core sheet, the two ends of described each core limb cross section all are the shape that is similar to arc of intermediate projections, described each coil is enclosed within respectively on each self-corresponding core limb, and the two ends of each coil are respectively and the similar arc in described core limb two ends.

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

4. the gap dock three-phase three-limb amorphous core device of cross section approximate circle as claimed in claim 1, the small seam that it is characterized in that described butt joint group is 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.

5. as the gap dock three-phase three-limb amorphous core device of claim 1,2,3 or 4 described cross section approximate circles, it is characterized in that the described amorphous core sheet of described same iron core is divided into some groups, the width of same group amorphous core sheet equates.

6. the gap dock three-phase three-limb amorphous core device of cross section approximate circle as claimed in claim 5 is characterized in that the cross sectional shape left-right symmetric of described each core limb, and two ends are the stairstepping of symmetry.

7. the gap dock three-phase three-limb amorphous core device of cross section approximate circle as claimed in claim 6, the some amorphous core sheets that it is characterized in that described same amorphous core are divided into three groups, it is the wideest to be positioned at one group of inboard amorphous core sheet in the described outer iron core, the one group of amorphous core sheet that is positioned at the outside is the narrowest, the one group of amorphous core sheet that is positioned at the outside in the described inner iron core is the wideest, and it is the narrowest to be positioned at one group of inboard amorphous core sheet.

8. the gap dock three-phase three-limb amorphous core device of cross section approximate circle as claimed in claim 6, the some amorphous core sheets that it is characterized in that described same amorphous core are divided into four groups, the amorphous core sheet width of described outer each amorphous core sheet group unshakable in one's determination increases from outside to inside successively, and the amorphous core sheet width of each amorphous core sheet group of described inner iron core increases from inside to outside successively.

9. the gap dock three-phase three-limb amorphous core device of cross section approximate circle as claimed in claim 6, it is characterized in that the described outer width of the width of that inboard group amorphous core sheet greater than the amorphous core in the outside unshakable in one's determination, superolateral that group amorphous core sheet width of described inner iron core is greater than the width of the amorphous core sheet of inboard.