CN203966764U

CN203966764U - A kind of disconnected yoke iron-core of three-phase amorphous alloy transformer

Info

Publication number: CN203966764U
Application number: CN201420342810.0U
Authority: CN
Inventors: 于春雷; 顾小虎; 凌健; 张士岩; 杨庆福
Original assignee: FUJIAN HESHENG ZHIXIN AMORPHOUS TRANSFORMER Co Ltd; Shandong Aipu Zhixin Amorphous Alloy Transformer Co Ltd; Shanghai Zhixin Electric Amorphous Co Ltd; Shanghai Zhixin Electric Co Ltd; Jiangsu Hongyuan Electric Co Ltd; Jiangsu Nari Power Electrical Co Ltd; Chongqing Yadongya Group Transformer Co Ltd
Current assignee: FUJIAN HESHENG ZHIXIN AMORPHOUS TRANSFORMER Co Ltd; Shandong Aipu Zhixin Amorphous Alloy Transformer Co Ltd; Shanghai Zhixin Electric Amorphous Co Ltd; Shanghai Zhixin Electric Co Ltd; Jiangsu Hongyuan Electric Co Ltd; Jiangsu Nari Power Electrical Co Ltd; Chongqing Yadongya Group Transformer Co Ltd
Priority date: 2014-06-25
Filing date: 2014-06-25
Publication date: 2014-11-26
Anticipated expiration: 2024-06-25

Abstract

The utility model discloses a broken yoke iron core of a three-phase amorphous alloy transformer, which comprises three unit iron cores whose upper unit iron yokes can be opened. Each unit core is made of multiple single cores nested one by one. The cross section of the single core column and the single iron yoke of each single core are parallelograms, so that the unit core column and the unit The cross section of the iron yoke is basically semicircular. The three iron core columns of the broken yoke iron core of the utility model are respectively formed by the diameter of the cross section of the left unit iron core column of one unit core and the diameter of the cross section of the right unit iron core column of the other unit core, so that the three The cross-sections of the two core columns are basically circular, and the centers of the cross-sections of the three core columns form an equilateral triangle. The broken yoke iron core of the utility model not only has the advantages of excellent performance, low noise, material saving and low cost, but more importantly, the transformer coil can be wound separately, which greatly facilitates the assembly of the transformer coil.

Description

A kind of disconnected yoke iron-core of three-phase amorphous alloy transformer

Technical field

The utility model relates to a kind of disconnected yoke iron-core of three-phase amorphous alloy transformer.

Background technology

The cross section of existing three-phase amorphous alloy (silicon steel) leg is all rectangular, and core construction is mostly four frame pentastyle or three-frame and three poles.The core construction of this transformer has many shortcomings, and first the square-section of core limb, than circular cross section in the situation that coil turn is identical, consume 11.1% copper material more; Secondly every transformer single frame many (by single or double composition) unshakable in one's determination, the mitre of iron yoke gap will increase, magnetic resistance also just increases thereupon, in the time that transformer moves, under the effect of AC magnetic field, these seam crossings very easily cause many places Wow, thereby produce very large noise.In addition, the magnetic flux density in the iron yoke of this core construction is 1.155 times of magnetic flux density in core limb, and therefore it has also caused no-load loss unshakable in one's determination to increase.

In addition, existing triangle Wound iron-core transformer is remains silent, and coil winding needs professional coil winding machine, makes the equipment investment of manufacturing enterprise larger, manufactures efficiency low, processing technology complexity, changing of coils complexity.

Utility model content

The purpose of this utility model is in order to overcome the deficiencies in the prior art, a kind of disconnected yoke iron-core of three-phase amorphous alloy transformer is provided, it not only has advantages of that no-load loss is little, noise is low, saves material and low cost of manufacture, the more important thing is transformer coil coiling separately, greatly facilitated the suit of transformer coil.

The technical scheme that realizes above-mentioned purpose is: a kind of disconnected yoke iron-core of three-phase amorphous alloy transformer, comprise all identical unit core of three shapes and size, each unit core is the rectangle frame being become with upper lower unit iron yoke piece by highly identical left and right unit core post, wherein

In each unit core, there is a unit iron yoke to open;

Each unit core is according to nested forming by multiple monomer iron cores respectively with left and right monomer core limb and upper and lower monomer iron yoke, the equal parallelogram of cross section of the cross section of the monomer core limb of each monomer iron core and monomer iron yoke, makes the basic semicircular in shape of cross section of unit core post and unit iron yoke;

Described disconnected yoke iron-core is assembled into a 3-D triangle structure by three unit core according to the structure of equilateral triangle, three core limbs of this disconnected yoke iron-core are respectively to be docked and form mutually by the diameter of the diameter of cross section of the left unit core post of a unit core and the cross section of the right unit core post of another unit core, make the cross section of three core limbs all substantially rounded, and the center of circle of the cross section of three core limbs form an equilateral triangle.

The disconnected yoke iron-core of above-mentioned three-phase amorphous alloy transformer, wherein, the cross section of monomer core limb and the cross section of monomer iron yoke that are positioned at the outermost monomer iron core of each described unit core are the parallelogram that a thickness is greater than width, are positioned at the parallelogram that a thickness is less than width that is of the cross section of monomer core limb of the described monomer iron core of other position of each unit core and the cross section of monomer iron yoke.

The disconnected yoke iron-core of above-mentioned three-phase amorphous alloy transformer, wherein, each described monomer iron core is to be reeled and formed by the amorphous alloy strips that waits width.

The disconnected yoke iron-core of above-mentioned three-phase amorphous alloy transformer, wherein, the extended line of the diameter of the circular cross section of three core limbs of described disconnected yoke iron-core is all by the center of an equilateral triangle.

The technical scheme of the disconnected yoke iron-core of three-phase amorphous alloy transformer of the present utility model, unit core by three openings is assembled into a 3-D triangle structure according to the structure of equilateral triangle, these three each unit core of unit core are according to nested forming by multiple monomer iron cores respectively with left and right monomer core limb and upper and lower monomer iron yoke, the equal parallelogram of cross section of the cross section of the monomer core limb of each monomer iron core and monomer iron yoke, make the basic semicircular in shape of cross section (external semicircle) of unit core post and unit iron yoke, make the cross section substantially rounded (external circle) of three core limbs of assembled good three-phase transformer core, make core section activity coefficient high, coefficient is between 0.945～0.955.The disconnected yoke iron-core of three-phase amorphous alloy transformer of the present utility model not only has advantages of that no-load loss is little, noise is low, saves material and low cost of manufacture, the more important thing is because iron core is open type, overcome the closed core difficult shortcoming that winds the line, transformer coil coiling separately, greatly facilitate the suit of transformer coil, can manufacture various distribution oil-immersed type transformers and the dry-type transformer identical with current plane amorphous core capacity.

Brief description of the drawings

Fig. 1 is the structural representation of the disconnected yoke iron-core of three-phase amorphous alloy transformer of the present utility model;

Fig. 2 is the structural representation that removes upper yoke in Fig. 1;

Fig. 3 is the vertical view of Fig. 1;

Fig. 4 is the cross-sectional view of the core limb of the disconnected yoke iron-core of three-phase amorphous alloy transformer of the present utility model;

Fig. 5 is the structural representation of the unit core of the disconnected yoke iron-core of three-phase amorphous alloy transformer of the present utility model.

Embodiment

In order to understand the technical solution of the utility model better, below by embodiment particularly and be described in detail by reference to the accompanying drawings:

Refer to Fig. 1 to Fig. 5, the disconnected yoke iron-core of a kind of three-phase amorphous alloy transformer of the present utility model, comprise all identical unit core 10 of three shapes and size, each unit core 10 is by highly identical left and right unit core post 13,13 ' and upper lower unit iron yoke 14, the 14 ' rectangle frame forming, wherein:

In each unit core 10, there is a unit iron yoke 14 ' to open;

Each unit core 10 be by multiple monomers unshakable in one's determination 100 respectively with left and right monomer core limb and upper and lower monomer iron yoke according to nested forming, make left and right unit core post 13,13 ' and upper lower unit iron yoke 14,14 ' the basic semicircular in shape of cross section (external semicircle); The equal parallelogram of cross section of the cross section of the monomer core limb of each monomer iron core 100 and monomer iron yoke; The cross section of monomer core limb 100 ' and the cross section of monomer iron yoke that are positioned at the outermost monomer iron core of each unit core 10 are the parallelogram that a thickness is greater than width, are positioned at the parallelogram that a thickness is less than width that is of the cross section of monomer core limb of the monomer iron core 100 of each unit core 10 other positions and the cross section of monomer iron yoke; Each monomer iron core 100 is to be reeled and formed by the amorphous alloy strips that waits width;

Three unit core 10 are assembled into a 3-D triangle structure according to the structure of the equilateral triangle yoke iron-core 1 that will break;

Three core limbs 11 of disconnected yoke iron-core 1 are respectively to be docked and form mutually by the diameter of cross section of left unit core post 13 of a unit core 10 and the diameter of the cross section of the right unit core post 13 ' of another unit core 10, make all substantially rounded (external circle) of cross section of three core limbs 11, and the center of circle of the cross section of three core limbs forms an equilateral triangle; The extended line of the diameter of the circular cross section of these three core limbs is all by the center 0 of an equilateral triangle.Three openable iron yokes 12 ' of disconnected yoke iron-core 1 are the upper unit iron yoke 14 ' of openable three unit core 10.

The disconnected yoke iron-core of three-phase amorphous alloy transformer of the present utility model, is open type iron core, makes transformer coil coiling separately, has greatly facilitated the suit of transformer coil.Because three core limbs 11 of disconnected yoke iron-core of the present utility model are assembled by the core limb 13 of two unit core 10, make the cross section substantially rounded (external circle) of three core limbs 11 of the disconnected yoke iron-core 1 of three-phase transformer, therefore have advantages of that no-load loss is little, noise is low, save material and low cost of manufacture.The disconnected yoke iron-core magnetic circuit of this three-phase amorphous alloy transformer is completely equal, all symmetrical, has overcome the shortcoming because of the not identical three-phase current unbalance causing of magnetic circuit unshakable in one's determination in the past.

Those of ordinary skill in the art will be appreciated that, above embodiment is only for the utility model is described, and be not used as restriction of the present utility model, as long as within the scope of connotation of the present utility model, variation, modification to the above embodiment all will drop within the scope of claims of the present utility model.

Claims

1. A broken yoke core of a three-phase amorphous alloy transformer, comprising three unit cores with the same shape and size, each unit core is a rectangular frame made of left and right unit core posts and upper and lower unit iron yokes with the same height, It is characterized in that,

There is a unit iron yoke on each unit core that can be opened;

Each unit core is made of a plurality of single cores with left and right single core columns and upper and lower single iron yokes nested one by one. The cross-sections are all parallelograms, so that the cross-sections of the unit iron core column and the unit iron yoke are basically semicircular;

The broken yoke core is composed of three unit cores assembled into a three-dimensional triangular structure according to the structure of an equilateral triangle. The three core columns of the broken yoke core are respectively composed of the diameter of the cross-section of the left unit core column of one unit core and the diameter of the other. The diameters of the cross-sections of the right unit core columns of the unit core are butted with each other, so that the cross-sections of the three core columns are basically circular, and the centers of the cross-sections of the three core columns form an equilateral triangle.

2. The broken yoke core of a three-phase amorphous alloy transformer according to claim 1, wherein the cross section of the single core column and the single iron yoke of the single core at the outermost side of each said unit core The cross section of the single core is a parallelogram whose thickness is greater than the width, and the cross section of the single core column and the cross section of the single iron yoke of the single core located at other positions of each unit core is a parallelogram whose thickness is smaller than the width .

3. The broken yoke core of a three-phase amorphous alloy transformer according to claim 1 or 2, wherein each single core is formed by winding an amorphous alloy strip of equal width.

4. The broken yoke core of the three-phase amorphous alloy transformer according to claim 1, wherein the extension lines of the diameters of the circular cross-sections of the three core columns of the broken yoke core all pass through an equilateral triangle center of.