CN101447290B

CN101447290B - Three-phase five-limb amorphous core with noise reduction function of epoxy coating and with approximate-circle cross-section

Info

Publication number: CN101447290B
Application number: CN2008101141410A
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: 2011-11-23
Anticipated expiration: 2028-05-30
Also published as: CN101447290A

Abstract

The invention relates to a three-phase five-limb amorphous core with noise reduction function of epoxy coating and 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 arranged between the two outer amorphous cores side by side; and the side limbs of the adjacent amorphous cores are bonded with each other to form core limbs. The amorphous cores are formed by packing a plurality of amorphous core plates, wherein, the amorphous core plates of one amorphous core have different widths, and the amorphous core plates arranged outside are wider than the amorphous core plates arranged inside. The coils are respectively sheathed on the corresponding core limbs, the two ends of each coil respectively take the shape of arc which is similar to the two ends of the core limbs, and the glue coating is coated at least on part of the area of the front end surface and the back end surface of the amorphous cores. The three-phase five-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, reduces the noise and is mainly used in amorphous transformers.

Description

The cross section approximate circle three-phase five-limb amorphous core of noise reduction function of epoxy coating

Technical field

The present invention relates to a kind of cross section approximate circle three-phase five-limb amorphous core of noise reduction function of epoxy coating, 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 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 cross section approximate circle three-phase five-limb amorphous core of noise reduction function of epoxy coating, adopt this combination unshakable in one's determination to help reducing the copper consumption of coil, avoid the damage of causing for the insulating material of coil, and reduce noise 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 cross section approximate circle three-phase five-limb amorphous core of noise reduction function of epoxy coating, 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 adjacent described amorphous core joins, described each amorphous core forms by the folded system of some amorphous core sheets, described some amorphous core sheets of same amorphous core have different width, the width of the amorphous core sheet outside being positioned at is greater than the width that is positioned at inboard amorphous core sheet, two adjacent arbitrarily side arms unshakable in one's determination constitute a core limb, 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, the two ends of each coil are respectively and the similar arc in described core limb two ends, are coated with epoxy coating on the front/rear end of described each amorphous core to the small part area.

The invention has the beneficial effects as follows: owing on each front/rear end unshakable in one's determination, be provided with epoxy coating, each lamination is bonded together, make it and to scatter, improved bulk strength unshakable in one's determination thus, reduced noise by epoxy coating; Because the epoxy resin that adopts has certain pliability, can not cause excessive stress on iron core; 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.

Embodiment

Referring to Fig. 1-2, the invention provides a kind of cross section approximate circle three-phase five-limb amorphous core of noise reduction function of epoxy coating, 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 adjacent described amorphous core joins, described each amorphous core forms by the folded system of some amorphous core sheets, described some amorphous core sheets of same amorphous core have different width, the width of the amorphous core sheet outside being positioned at is greater than the width that is positioned at inboard amorphous core sheet, two adjacent arbitrarily side arms unshakable in one's determination constitute a core limb, 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, the two ends of each coil are respectively and the similar arc in described core limb two ends, are coated with epoxy coating 700 on the front/rear end of described each amorphous core to the small part area.

Described epoxy coating can cover does not need all areas of taking apart on the end face of iron core, also can cover the emphasis part of influence bulk strength unshakable in one's determination and noise, can also adopt the mode of bar shaped coating, the bar shaped epoxy coating at the some coupling parts of coating or whole amorphous core sheet edges on end face of iron core, these bar shaped epoxy coatings are coupling part or whole edges of amorphous core sheets on end face of iron core, both arrive fixedly amorphous core sheet purpose, saved the consumption of epoxy resin again.

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

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

The amorphous core sheet 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 amorphous core sheets of described same amorphous core are divided into four groups, and the amorphous core sheet width of each group reduces from outside to inside successively; When being divided into two groups, the amorphous core sheet width that is positioned at one group in the outside is greater than being positioned at inboard one group amorphous core sheet 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 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 cross section approximate circle three-phase five-limb amorphous core of a noise reduction function of epoxy coating, 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 adjacent described amorphous core joins, it is characterized in that described each amorphous core forms by the folded system of some amorphous core sheets, described some amorphous core sheets of same amorphous core have different width, the width of the amorphous core sheet outside being positioned at is greater than the width that is positioned at inboard amorphous core sheet, two adjacent arbitrarily side arms unshakable in one's determination constitute a core limb, 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, the two ends of each coil are respectively and the similar arc in described core limb two ends, are coated with epoxy coating on the front/rear end of described each amorphous core to the small part area.

2. the cross section approximate circle three-phase five-limb amorphous core of noise reduction function of epoxy coating as claimed in claim 1, it is characterized in that described epoxy coating is some bar shapeds, described bar shaped epoxy resin layer connects the edge of described part or all of amorphous core sheet on end face of iron core.

3. the cross section approximate circle three-phase five-limb amorphous core of noise reduction function of epoxy coating as claimed in claim 1 or 2 is characterized in that the described amorphous core sheet of same iron core is divided into some groups, and the width of same group amorphous core sheet equates.

4. the cross section approximate circle three-phase five-limb amorphous core of noise reduction function of epoxy coating as claimed in claim 3 is characterized in that the cross sectional shape left-right symmetric of described each core limb, and two ends are the stairstepping of symmetry.

5. the cross section approximate circle three-phase five-limb amorphous core of noise reduction function of epoxy coating as claimed in claim 3, 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 amorphous core sheet of outermost, and it is the narrowest to be positioned at the most inboard one group of amorphous core sheet.

6. the cross section approximate circle three-phase five-limb amorphous core of noise reduction function of epoxy coating as claimed in claim 3 is characterized in that some amorphous core sheets of described same amorphous core are divided into four groups, and the amorphous core sheet width of each group reduces from outside to inside successively.

7. the cross section approximate circle three-phase five-limb amorphous core of noise reduction function of epoxy coating as claimed in claim 3, the some amorphous core sheets that it is characterized in that described same amorphous core are divided into two groups, and the amorphous core sheet width that is positioned at one group in the outside is greater than being positioned at inboard one group amorphous core sheet width.