CN101447285A - Gap-butt three-phase five-limb amorphous core device with approximate-circle cross-section - Google Patents

Abstract

The invention relates to a gap-butt three-phase five-limb amorphous core device with an approximate-circle cross-section, comprising two outer amorphous cores, two inner amorphous cores and three coils. The amorphous cores are arranged in sequence, wherein, the two inner amorphous cores are positioned between the two outer amorphous cores side by side; the core plates of any amorphous core are divided into a plurality of butt groups with different lengths, and the two ends of one butt group are butted at bonding land of the cores to form a micro seam with equivalent width; the core plates of one amorphous core also have different widths, wherein, the core plates arranged outside are wider than the core plates arranged inside; the two ends of the cross-section of all core limbs take the shape which is similar to arc with the middle part raised; and the two ends of each coil respectively take the shape of arc which is similar to the two ends of the core limbs. The gap-butt three-phase five-limb amorphous core device of the invention has compact structure, is not only beneficial to the saving of the usage of copper in the coils and the conduction of magnetic flux, but also beneficial to preventing 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 five-limb amorphous core device of cross section approximate circle

Technical field

The present invention relates to a kind of gap dock three-phase five-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 that is used for many iron-core transformers is folded built in together by the several layers lamination, 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 lamination 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 five-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 five-limb amorphous core device of cross section approximate circle, comprise two outer amorphous cores, two interior amorphous cores and three coils, described each amorphous core is arranged in order, amorphous cores are side by side outside described two between the amorphous core in described two, the side arm of described adjacent amorphous core joins, the side arm that joins constitutes core limb, the side arm that joins 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 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 lamination of same amorphous core also has different width, the width of the lamination outside wherein being positioned at is greater than the width that is positioned at inboard lamination, the two ends of the cross section of described each core limb 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 same group lamination equal in length has made things convenient for the shearing of lamination, helps to provide production efficiency, reduces cost; Because the width of the lamination outside being positioned on the same iron core is greater than the width that is positioned at inboard lamination, when the adjacent side arm of two iron cores constitutes a core limb, the lamination that is positioned at the core limb mid portion is wideer than the lamination 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 shows docking structure unshakable in one's determination.

Embodiment

Referring to Fig. 1-3, the invention provides a kind of gap dock three-phase five-limb amorphous core device of cross section approximate circle, comprise two outer amorphous cores 110, two interior amorphous cores 120 and three coils 400, described each amorphous core is arranged in order, amorphous cores are side by side outside described two between the amorphous core in described two, the side arm of described adjacent amorphous core joins, the side arm that joins constitutes core limb, lamination in described arbitrary amorphous core is divided into some butt joint groups that are uneven in length, the lamination equal in length of same butt joint group, dock mutually in this iron core bonding land at the two ends of same butt joint group, form a small seam 300, the small seam of the adjacent butt joint group gap that on the tangential direction of iron core, is separated by, the lamination of same amorphous core also has different width, the width of the lamination outside wherein being positioned at is greater than the width that is positioned at inboard lamination, the two ends of the cross section of described each core limb 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 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.

The small seam of 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.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.

Constitute because described core limb is two side arms unshakable in one's determination, so the cross sectional shape left-right symmetric of described core limb, two ends are the stairstepping of symmetry.

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

For example, the lamination of described same amorphous core can be divided into three groups, and it is the wideest to be positioned at one group of lamination of outermost, and it is the narrowest to be positioned at the most inboard one group of lamination.Among the embodiment for example shown in the drawings, lamination on the same amorphous core is divided into three groups exactly, lamination group on one of them amorphous core indicates with 111,112,113 respectively, and the lamination group on another amorphous core indicates with 121,122,126 respectively.

The lamination of same amorphous core also can adopt other packet modes, for example is divided into four groups or two groups.When being divided into four groups, some laminations of described same amorphous core are divided into four groups, and the lamination width of each group reduces from outside to inside successively; When being divided into two groups, the lamination width that is positioned at one group in the outside is greater than being positioned at inboard one group lamination width.

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 lamination 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 lamination of different in width, can adopt existing various packaged type and joint design.

Claims (9)

1. the gap dock three-phase five-limb amorphous core device of a cross section approximate circle, comprise two outer amorphous cores, two interior amorphous cores and three coils, described each amorphous core is arranged in order, amorphous cores are side by side outside described two between the amorphous core in described two, the side arm of described adjacent amorphous core joins, the side arm that joins constitutes core limb, 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 lamination of same amorphous core also has different width, the width of the lamination outside wherein being positioned at is greater than the width that is positioned at inboard lamination, the two ends of the cross section of described each core limb 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 five-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 five-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 five-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 five-limb amorphous core device of claim 1,2,3 or 4 described cross section approximate circles, it is characterized in that the described lamination of same iron core is divided into some groups, the width of same group lamination equates.

6. the gap dock three-phase five-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 five-limb amorphous core device of cross section approximate circle as claimed in claim 6, the some laminations 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 lamination of outermost, and it is the narrowest to be positioned at the most inboard one group of lamination.

8. the gap dock three-phase five-limb amorphous core device of cross section approximate circle as claimed in claim 6 is characterized in that some laminations of described same amorphous core are divided into four groups, and the lamination width of each group reduces from outside to inside successively.

9. the gap dock three-phase five-limb amorphous core device of cross section approximate circle as claimed in claim 6, the some laminations that it is characterized in that described same amorphous core are divided into two groups, and the lamination width that is positioned at one group in the outside is greater than being positioned at inboard one group lamination width.

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