CN213583418U

CN213583418U - Combined transformer iron core

Info

Publication number: CN213583418U
Application number: CN202023190674.2U
Authority: CN
Inventors: 张士龙; 张云涛
Original assignee: Shijiazhuang Shilong Power Equipment Co ltd
Current assignee: Shijiazhuang Shilong Power Equipment Co ltd
Priority date: 2020-12-26
Filing date: 2020-12-26
Publication date: 2021-06-29
Anticipated expiration: 2030-12-26

Abstract

The utility model relates to a transformer core technical field especially relates to a modular transformer core. The magnetic pole comprises an upper yoke, a lower yoke and a column iron yoke, which are all composed of a main magnetic pole and auxiliary magnetic poles, wherein the auxiliary magnetic poles are arranged on the front side and the rear side of the main magnetic pole, the main magnetic pole is made of amorphous alloy laminated sheets, and the auxiliary magnetic poles are made of silicon steel sheet laminated sheets, so that the magnetic conduction capability of a main closed magnetic conduction part at the middle position is increased, the insulativity is enhanced, the eddy current loss of a transformer iron core is smaller, the heat generation is less, and the working efficiency is high; the front side and the rear side of the combined iron core are respectively provided with the insulating hard supports, and the combined iron core is tightened from front to rear through the insulating hard supports due to the fact that the amorphous alloy sheets are softer, and dislocation of the amorphous alloy lamination due to the action of pressure above the amorphous alloy lamination is prevented.

Description

Combined transformer iron core

Technical Field

The utility model relates to a transformer core technical field especially relates to a modular transformer core.

Background

The low-carbon steel coil used in the early period is difficult to see at present, and with the development of science and technology, the following three materials are listed in succession, and the quality is also improved in turn.

1. Silicon steel (iron-silicon alloy, silicon content is generally below 4.5%).

2. Permalloy (iron-nickel alloy, nickel content is in the range of 30-90%).

3. Amorphous and nanocrystalline alloys (iron-based, iron nickel-based, cobalt-based and nanocrystalline strip).

The amorphous alloy transformer is a low-loss and high-energy-efficiency power transformer. The transformer uses iron-based amorphous metal as an iron core, and because the material has no long-range ordered structure, the material is easier to magnetize and demagnetize than common magnetic materials.

The iron loss of the amorphous alloy transformer is 70-80% lower than that of the traditional transformer which generally adopts silicon steel as an iron core. Because the loss is reduced, the power generation requirement is also reduced, and the emission of greenhouse gases such as carbon dioxide is also reduced correspondingly.

The amorphous alloy material has high hardness, the material is difficult to process during processing, and the production cost of the amorphous alloy iron core is high, so that the most common iron core in the market is formed by splicing and stacking silicon steel sheets; when the silicon steel sheet iron core works, the magnetic flux on the upright yoke column is the largest, eddy current loss generated on the upright yoke column is large, no-load loss of the transformer is large, a main heat generating part is arranged on the upright yoke column, and the upright yoke column is coated inside a coil winding, so that the heat radiation performance of the iron core is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem, be to the technical insufficiency that exists above-mentioned, provide a combined transformer core, include upper yoke, lower yoke and stand yoke comprise leading magnetic column and vice magnetic conduction post, vice magnetic conduction post sets up both sides around leading magnetic column, leading magnetic column is made by amorphous alloy lamination, vice magnetic conduction post is made by silicon steel sheet lamination to make the magnetic conduction ability at the main closed magnetic conduction position of intermediate position increase, insulating reinforcing, transformer core's eddy current loss is less, and the less work efficiency that produces heat is high; the front side and the rear side of the combined iron core are respectively provided with the insulating hard supports, and the combined iron core is tightened from front to rear through the insulating hard supports due to the fact that the amorphous alloy sheets are softer, and dislocation of the amorphous alloy lamination due to the action of pressure above the amorphous alloy lamination is prevented.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the combined iron core and the clamping piece are included; the upper side and the lower side of the combined iron core are provided with clamping pieces; a screw rod is arranged between the upper clamping piece and the lower clamping piece and is fixedly locked through the screw rod; the bottom of the lower clamp is provided with a supporting leg; an upper yoke is arranged above the combined iron core, and a lower yoke is arranged below the combined iron core; and three groups of upright iron yokes are arranged between the upper yoke and the lower yoke.

Further optimizing the technical scheme, the front side and the rear side of the combined iron core are respectively provided with an insulating hard bracket; three groups of vertical plates are arranged above the insulating hard bracket, and a horizontal plate is arranged below the insulating hard bracket; the vertical plate is vertically arranged; the three groups of vertical plates correspond to the three groups of upright iron yokes in the width direction; the horizontal plate and the lower yoke correspond to each other up and down.

Further optimizing the technical scheme, a supplement plate is arranged at the top of the insulating hard bracket; the upper end and the lower end of the vertical plate, the supplement plate and the horizontal plate are all arranged inside the clamping piece.

Further optimizing the technical scheme, the upright iron yoke, the lower yoke, the vertical plate and the horizontal plate are all provided with through holes; a screw rod is arranged at the position of the through hole; and nuts are arranged at two ends of the screw rod.

The technical scheme is further optimized, and the upper yoke, the lower yoke and the stand column iron yoke are all composed of a main magnetic pole and an auxiliary magnetic pole; the auxiliary magnetic conduction columns are arranged on the front side and the rear side of the main magnetic conduction column.

Further optimizing the technical scheme, the main magnetic column is made of amorphous alloy lamination laminations; the auxiliary magnetic conductive columns are made of silicon steel sheet laminations.

Compared with the prior art, the utility model has the advantages of it is following:

1. the upper yoke, the lower yoke and the stand column iron yoke are all composed of a main magnetic column and auxiliary magnetic columns, the auxiliary magnetic columns are arranged on the front side and the rear side of the main magnetic column, the main magnetic column is made of amorphous alloy laminated sheets, and the auxiliary magnetic columns are made of silicon steel sheet laminated sheets, so that the magnetic conductivity of a main closed magnetic conduction part at the middle position is increased, the insulativity is enhanced, the eddy current loss of a transformer iron core is small, the heat generation is less, and the working efficiency is high.

2. The front side and the rear side of the combined iron core are respectively provided with the insulating hard supports, and the combined iron core is tightened from front to rear through the insulating hard supports due to the fact that the amorphous alloy sheets are softer, and dislocation of the amorphous alloy lamination due to the action of pressure above the amorphous alloy lamination is prevented.

3. Compared with a silicon steel sheet iron core, the improved combined iron core has the advantages that the magnetic conductivity is greatly improved, the eddy current loss is greatly reduced, and the loss is very small when the transformer is in no-load.

Drawings

Fig. 1 is a perspective view of a combined transformer core.

Fig. 2 is a schematic diagram of an installation position of an insulating hard bracket of a combined transformer core.

Fig. 3 is a schematic diagram of an internal lamination structure of a combined transformer core.

In the figure: 1. a combined iron core; 101. an upper yoke; 102. a lower yoke; 103. a column yoke; 2. a clamp; 201. a screw; 202. a support leg; 3. an insulating hard support; 301. a vertical plate; 302. a horizontal plate; 303. a supplement board; 4. a through hole; 5. a screw rod; 6. a nut; 7. a dominant magnetic pole; 8. and an auxiliary magnetic conduction column.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The first embodiment is as follows: referring to fig. 1-3, a combined transformer core is characterized in that: comprises a combined iron core 1 and a clamping piece 2; the upper side and the lower side of the combined iron core 1 are both provided with clamping pieces 2; a screw 201 is arranged between the upper clamping piece 2 and the lower clamping piece 2 and is fixedly locked through the screw 201; the bottom of the lower clamp 2 is provided with a supporting leg 202; an upper yoke 101 is arranged above the combined iron core 1, and a lower yoke 102 is arranged below the combined iron core 1; three sets of column iron yokes 103 are arranged between the upper yoke 101 and the lower yoke 102.

Preferably, the front side and the rear side of the combined iron core 1 are both provided with an insulating hard bracket 3; three groups of vertical plates 301 are arranged above the insulating hard bracket 3, and a horizontal plate 302 is arranged below the insulating hard bracket; the vertical plate 301 is vertically arranged; the three groups of vertical plates 301 correspond to the three groups of upright iron yokes 103 in the width direction; the horizontal plate 302 corresponds to the lower yoke 102 up and down.

Preferably, a supplementary plate 303 is arranged on the top of the insulating hard bracket 3; the upper end and the lower end of the vertical plate 301, the supplementary plate 303 and the horizontal plate 302 are all arranged inside the clamping piece 2.

Preferably, the column iron yoke 103, the lower yoke 102, the vertical plate 301 and the horizontal plate 302 are all provided with through holes 4; a screw rod 5 is arranged at the position of the through hole 4; and nuts 6 are arranged at two ends of the screw rod 5.

Preferably, the upper yoke 101, the lower yoke 102 and the column iron yoke 103 are all composed of a main magnetic pole 7 and a secondary magnetic pole 8; the auxiliary magnetic conduction columns 8 are arranged on the front side and the rear side of the main magnetic conduction column 7.

Preferably, the main magnetic pillar 7 is made of an amorphous alloy lamination; the auxiliary magnetic conductive columns 8 are made of silicon steel sheet laminations.

The working principle, as shown in fig. 1-3, when assembling the combined iron core 1, a side clamp 2 is first placed on the assembling platform, the front and the back sides of the combined iron core 1 are respectively provided with an insulating hard bracket 3, three groups of vertical plates 301 are arranged above the insulating hard brackets 3, a horizontal plate 302 is arranged below the insulating hard brackets 3, the vertical plates 301 are vertically arranged, the three groups of vertical plates 301 correspond to the three groups of upright iron yokes 103 in the width direction, the horizontal plates 302 correspond to the lower yokes 102 up and down, the insulating hard bracket 3 is correspondingly arranged on the clamping piece 2, so that the vertical plate 301 corresponds to the stand column iron yoke 103, the complementary plate 303 corresponds to the upper yoke 101, the horizontal plate 302 corresponds to the lower yoke 102, through holes 4 are formed in the stand column iron yoke 103, the lower yoke 102, the vertical plate 301 and the horizontal plate 302, a screw rod 5 is arranged at the position of each through hole 4, and the screw rod 5 is inserted into the position of each through hole 4.

Then, assembling and laminating on the insulating hard bracket 3; the upper yoke 101, the lower yoke 102 and the column iron yoke 103 are all composed of a main magnetic column 7 and an auxiliary magnetic column 8, the auxiliary magnetic column 8 is arranged on the front side and the rear side of the main magnetic column 7, the main magnetic column 7 is made of amorphous alloy lamination, the auxiliary magnetic column 8 is made of silicon steel sheet lamination, silicon steel sheets are placed on a hard insulating support for lamination, so that the through holes 4 in the silicon steel sheets are correspondingly inserted into the screw rods 5 to make the auxiliary magnetic column 8 on one side.

Then, amorphous alloy laminations are placed on the auxiliary magnetic conductive columns 8 to form the main magnetic columns 7, and finally, silicon steel sheets are placed on the main magnetic columns 7 to form the auxiliary magnetic conductive columns 8 on the other side.

And placing the insulating hard bracket 3 on the uppermost auxiliary magnetic conduction column 8, tightly pressing the main magnetic conduction column 7 and the auxiliary magnetic conduction column 8 through the nut 6 and the screw rod 5, tightly pressing silicon steel sheet laminations on two sides on the amorphous alloy sheet lamination in the middle, and finally installing a pressing piece on the other side.

The middle position is made of amorphous alloy, the magnetic conductivity of the main closed magnetic conduction part is increased, the insulativity is enhanced, the eddy current loss of the transformer iron core is smaller, and the working efficiency is high with less heat generation; because the amorphous alloy sheet is softer, the combined iron core 1 can be fastened front and back through the insulating hard bracket 3, and the amorphous alloy lamination is prevented from being dislocated due to the action of pressure; for the silicon steel sheet iron core, the magnetic conductivity of the improved combined iron core 1 is greatly improved, the eddy current loss is greatly reduced, and the loss is very small when the transformer is in no-load.

The supplementary plate 303 is not connected with the vertical plate 301, so that when the coil winding is assembled, the pressing piece above and the supplementary plate 303 can be detached, and the subsequent coil winding assembly is ensured to be normally carried out.

The utility model discloses a control mode comes automatic control through the controller, and the control circuit of controller can realize through the simple programming of technical staff in this field, belongs to the common general knowledge in this field, and the utility model discloses mainly be used for protecting mechanical device, so the utility model discloses no longer explain control mode and circuit connection in detail.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A modular transformer core which characterized in that: comprises a combined iron core (1) and a clamping piece (2); the upper side and the lower side of the combined iron core (1) are provided with clamping pieces (2); a screw rod (201) is arranged between the upper clamping piece (2) and the lower clamping piece (2) and is fixedly locked through the screw rod (201); the bottom of the lower clamp (2) is provided with a supporting leg (202); an upper yoke (101) is arranged above the combined iron core (1), and a lower yoke (102) is arranged below the combined iron core (1); three groups of upright iron yokes (103) are arranged between the upper yoke (101) and the lower yoke (102).

2. The modular transformer core of claim 1, wherein: the front side and the rear side of the combined iron core (1) are provided with insulating hard brackets (3); three groups of vertical plates (301) are arranged above the insulating hard bracket (3), and a horizontal plate (302) is arranged below the insulating hard bracket; the vertical plate (301) is vertically arranged; the three groups of vertical plates (301) correspond to the three groups of upright iron yokes (103) in the width direction; the horizontal plate (302) corresponds to the lower yoke (102) up and down.

3. The modular transformer core of claim 2, wherein: a supplement plate (303) is arranged at the top of the insulating hard bracket (3); the upper end and the lower end of the vertical plate (301), the supplement plate (303) and the horizontal plate (302) are all arranged inside the clamping piece (2).

4. The modular transformer core of claim 2, wherein: through holes (4) are formed in the upright iron yoke (103), the lower yoke (102), the vertical plate (301) and the horizontal plate (302); a screw rod (5) is arranged at the position of the through hole (4); and nuts (6) are arranged at two ends of the screw rod (5).

5. The modular transformer core of claim 1, wherein: the upper yoke (101), the lower yoke (102) and the stand column iron yoke (103) are all composed of a main magnetic pole (7) and an auxiliary magnetic pole (8); the auxiliary magnetic conduction columns (8) are arranged on the front side and the rear side of the main magnetic column (7).

6. The modular transformer core of claim 5, wherein: the main magnetic column (7) is made of amorphous alloy lamination laminations; the auxiliary magnetic conduction column (8) is made of silicon steel sheet laminations.