CN101447295A - Three-phase three-limb amorphous core with noise reduction function of glue coating and with approximate-circle cross-section - Google Patents

Abstract

The invention relates to a three-phase three-limb amorphous core with noise reduction function of glue coating and 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 amorphous core plates of one amorphous core have different widths, the amorphous core plates arranged inside the outer core are wider than the amorphous core plates arranged inside, the amorphous core plates arranged outside the inner cores are wider than the amorphous core plates arranged inside; the coils are respectively sheathed on corresponding 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 core. The 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, reduces the noise and is mainly used in corresponding amorphous transformers.

Description

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

Technical field

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

Technical background

Amorphous core in 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 cross section approximate circle three-phase three-limb amorphous core of noise reduction function of glue coating, adopt this combination unshakable in one's determination to help reducing the copper consumption of coil, avoid giving the insulating material of coil and cause damage, 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 three-limb amorphous core of noise reduction function of glue coating, 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, 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, described outer iron core is positioned at the width of inboard amorphous core sheet greater than the width that is positioned at inboard amorphous core sheet, the width of the amorphous core sheet outside described each inner iron core is positioned at is greater than the width that is positioned at inboard amorphous core sheet, described different adjacent side arm unshakable in one's determination constitutes a core limb, 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, the two ends of each coil are respectively and the similar arc in described core limb two ends, are coated with function of glue 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 function of glue coating, each lamination is bonded together, make it and to scatter, improved bulk strength unshakable in one's determination thus, reduced noise by function of glue coating; Because the glue that adopts has certain pliability, can not cause excessive stress on iron core; 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.

Embodiment

Referring to Fig. 1-2, the invention provides a kind of cross section approximate circle three-phase three-limb amorphous core of noise reduction function of glue coating, 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, 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, described outer iron core is positioned at the width of inboard amorphous core sheet greater than the width that is positioned at inboard amorphous core sheet, the width of the amorphous core sheet outside described each inner iron core is positioned at is greater than the width that is positioned at inboard amorphous core sheet, described different adjacent side arm unshakable in one's determination constitutes a core limb, 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, the two ends of each coil are respectively and the similar arc in described core limb two ends, are coated with function of glue coating 700 on the front/rear end of described each amorphous core to the small part area.

Described function of glue 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 function of glue coating at the some coupling parts of coating or whole amorphous core sheet edges on end face of iron core, these bar shaped function of glue coating 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 glue again.

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, 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 (7)

1. the cross section approximate circle three-phase three-limb amorphous core of a noise reduction function of glue coating, 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, 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, described outer iron core is positioned at the width of inboard amorphous core sheet greater than the width that is positioned at inboard amorphous core sheet, the width of the amorphous core sheet outside described each inner iron core is positioned at is greater than the width that is positioned at inboard amorphous core sheet, described different adjacent side arm unshakable in one's determination constitutes a core limb, 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, the two ends of each coil are respectively and the similar arc in described core limb two ends, are coated with function of glue coating on the front/rear end of described each amorphous core to the small part area.

2. the cross section approximate circle three-phase three-limb amorphous core of noise reduction function of glue coating as claimed in claim 1, it is characterized in that described function of glue coating is some bar shapeds, described bar shaped annular 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 three-limb amorphous core of noise reduction function of glue 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 three-limb amorphous core of noise reduction function of glue 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 three-limb amorphous core of noise reduction function of glue coating as claimed in claim 4, 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.

6. the cross section approximate circle three-phase three-limb amorphous core of noise reduction function of glue coating as claimed in claim 4, 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.

7. the cross section approximate circle three-phase three-limb amorphous core of noise reduction function of glue coating as claimed in claim 4, it is characterized in that the described outer width of the width of inboard amorphous core sheet group greater than outside amorphous core sheet group unshakable in one's determination, the width of outside amorphous core sheet group is greater than the width of inboard amorphous core sheet group on the described inner iron core.

Images