阅读说明：本技术 一种变压器卷铁芯结构及铁芯套线圈的方法 (Transformer wound iron core structure and method for sleeving iron core with coil ) 是由 陆建军 于 2021-04-02 设计创作，主要内容包括：本发明公开了一种变压器卷铁芯结构及铁芯套线圈的方法,包括铁芯,铁芯由若干个硅钢片由内向外叠积而成,每圈硅钢片设置为具有一个断口的环形结构,部分或全部的断口交错分布在铁芯两侧的铁芯柱上,该卷铁芯结构在铁芯柱上设置交错分布的断口结构,在铁芯套线圈时,能够保证上轭部的卷角处保持一定的弧度,断口上方形成的空位为卷角处的弧度提供打开空间,保证铁芯打开后上轭部不会出现塑性变形,避免硅钢片的损耗,该铁芯结构打开和合拢方式简单,铁芯能快速插入线圈中,绕线工艺简单,变压器维修方便,不会影响变压器的空载损耗。(The invention discloses a transformer wound iron core structure and a method for sleeving an iron core coil by the iron core, wherein the iron core is formed by stacking a plurality of silicon steel sheets from inside to outside, each ring of silicon steel sheets is of an annular structure with a fracture, part or all of the fractures are distributed on iron core columns on two sides of the iron core in a staggered manner, the wound iron core structure is provided with the fracture structures distributed in the staggered manner on the iron core columns, when the iron core is sleeved with the coil, a certain radian can be kept at a winding angle of an upper yoke part, a vacant space formed above the fractures provides an opening space for the radian of the winding angle, the upper yoke part cannot generate plastic deformation after the iron core is opened, the loss of the silicon steel sheets is avoided, the iron core structure is simple in opening and closing modes, the iron core can be quickly inserted into the coil, the winding process is simple, the transformer is convenient to maintain, and.)

1. The utility model provides an iron core structure is rolled up to transformer, its characterized in that, includes iron core (1), iron core (1) is formed by a plurality of silicon steel sheet (2) from inside to outside stack, every circle silicon steel sheet (2) set up to the loop configuration who has a fracture (3), and partial or whole fracture (3) crisscross distribution are in on iron core post (6) of iron core (1) both sides.

2. The transformer wound core structure according to claim 1, wherein the fractures (3) of a plurality of adjacent silicon steel sheets (2) are adjacently arranged.

3. A transformer wound core structure according to claim 1, characterized in that a plurality of said interruptions (3) are distributed in a gradient manner on said core limb (6).

4. The transformer reel core structure of claim 1, wherein the annular structure is a rounded square or a chamfered square.

5. A transformer wound core structure according to claim 1, characterized in that part of said interruptions (3) are distributed in a staggered manner in the upper yoke (101) of said core (1).

6. A method of sleeving a coil, comprising the transformer wound core structure of any of claims 1-5, further comprising the steps of:

s1: the silicon steel sheets (2) are sequentially opened from outside to inside along the fracture (3);

s2: after the silicon steel sheets (2) are opened at the fracture (3), a specific radian is kept at the corner (1012) of each silicon steel sheet (2), a vacancy (10) is formed above the fracture (3), the vacancy (10) provides a spatial position for the radian at the corner (1012), and after the silicon steel sheets (2) are completely opened, the iron core (1) is in a U-shaped structure;

s3: the guide cylinders (9) are respectively sleeved into the two sides of the U-shaped structure, and then the coil (11) is sleeved on the iron core (1) along the direction of the guide cylinders (9);

s4: and taking out the guide cylinder (9), folding the silicon steel sheets (2) from inside to outside in sequence, and recovering the staggered fracture (3) of the iron core (1) from inside to outside.

Technical Field

The invention relates to the technical field of transformers, in particular to a transformer wound iron core structure and a method for sleeving a coil by an iron core.

Background

The transformer is a device for changing alternating voltage by using the principle of electromagnetic induction, and the main components of the transformer are a coil and an iron core. The existing transformer roll iron core structure mainly comprises the following parts: a continuously wound, fracture-free, wound core, as shown in FIG. 1; the coiled iron core without the fracture has small iron core loss and low noise, but a coil needs to be directly wound on the iron core, the winding process is complex, and the transformer is troublesome to maintain; secondly, the coiled iron core with a single opening on the yoke part is shown in figure 2; because the angle part exists, when the iron core and the coil are sleeved, the silicon steel sheet is allowed to be elastically bent or elastically deformed, but the silicon steel sheet cannot be plastically deformed, otherwise, the loss of the silicon steel sheet is greatly increased, so that for a yoke part single-opening transformer, the iron core needs to be inserted into the coil for multiple times, and the workload of the iron core sleeved coil is obviously increased; a double-opening coiled iron core with two columns having fracture, as shown in fig. 3; according to the coiled iron core, the coil is sleeved on the iron core, the yoke piece is inserted, the assembly process of the coiled iron core is almost the same as that of a laminated iron core, but the fracture is arranged on the iron core column, and the coil is arranged on the iron core column, so that the fracture position is not easy to clamp, and the noise and no-load loss of the transformer are seriously influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the transformer rolled iron core structure and the method for sleeving the iron core with the coil.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides an iron core structure is rolled up to transformer, includes the iron core, the iron core is formed by a plurality of silicon steel sheet from inside to outside stack, every circle the silicon steel sheet sets up to the loop configuration who has a fracture, and is partial or whole the fracture is crisscross to be distributed on the iron core post of iron core both sides.

Furthermore, the fracture positions on the adjacent silicon steel sheets are arranged adjacently.

Further, a plurality of adjacent fractures are distributed on the iron core column in a gradient mode.

Further, the annular structure is a round corner square or a chamfer square.

Further, part of the fractures are distributed on an upper iron yoke of the iron core in a staggered mode.

The invention also provides a method for sleeving the coil by the iron core, which comprises the iron core rolling structure of the transformer and also comprises the following steps:

s1: the silicon steel sheets are sequentially opened along the fracture from outside to inside;

s2: after the silicon steel sheet is opened at the fracture, a specific radian is kept at the corner of the silicon steel sheet, a vacancy is formed above the fracture, the vacancy provides a space position for the radian at the corner, and the iron core is in a U-shaped structure after the silicon steel sheet is completely opened;

s3: respectively sleeving guide cylinders on two sides of the U-shaped structure, and then sleeving the coil on the iron core along the direction of the guide cylinders;

s4: and taking out the guide cylinder, folding the silicon steel sheets from inside to outside in sequence, and recovering the staggered fractures of the iron core from inside to outside.

The invention has the beneficial effects that:

according to the invention, the staggered fracture structures are arranged on the iron core column, when the iron core sleeves the coil, the coil angle of the upper yoke part can be ensured to keep a certain radian, the vacancy formed above the fracture provides an opening space for the radian of the coil angle, the upper yoke part can not generate plastic deformation after the iron core is opened, and the loss of silicon steel sheets is avoided.

Drawings

FIG. 1 is a structure of a wound core without a break;

FIG. 2 is a single open wound core configuration;

FIG. 3 is a double-opening rolled iron core structure

FIG. 4 is a view showing one of the structures of the wound core according to the present invention;

FIG. 5 is a schematic structural view of a silicon steel sheet according to the present invention;

FIG. 6 is a second schematic view of the structure of the iron core of the present invention;

FIG. 7 is a schematic view of the structure of the present invention when the roll core is opened;

FIG. 8 is a schematic view of the structure of the present invention in which the iron core is inserted into the coil;

FIG. 9 is a top view of FIG. 8;

fig. 10 is a schematic diagram of the core closing process of the present invention;

FIG. 11 is a top view of FIG. 10;

fig. 12 is a schematic structural view of the completed core-in-coil of the present invention;

fig. 13 is a top view of fig. 12.

In the figure:

1. an iron core; 101. an upper iron yoke; 1011. a straight portion; 1012. rolling corners; 102. a lower iron yoke; 103. a left core limb; 104. a right core limb; 2. silicon steel sheets; 3. breaking off; 301. an upper port; 302. a lower port; 4. a cavity; 5. an open structure; 6. a core limb; 7. a long axis direction; 8. a minor axis direction; 9. a guide cylinder; 10. a vacancy; 11. and a coil.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described below with reference to the accompanying drawings and embodiments. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The transformer wound core structure provided by the embodiment is shown in fig. 4-13, and includes an iron core 1 formed by stacking a plurality of silicon steel sheets 2, each ring of silicon steel sheets 2 is configured as an annular structure having a fracture 3, the plurality of silicon steel sheets 2 extend from inside to outside and are stacked to form a multi-layer annular iron core 1, part or all of the fractures 3 are distributed on iron core columns 6 on two sides of the iron core 1 in a staggered manner, when only one part of the fractures 3 is distributed on the iron core column 6 in a staggered manner, the other part of the remaining fractures 3 are distributed on an upper iron yoke 101 of the iron core 1 in a staggered manner.

The silicon steel sheet 2 of this embodiment is including having the book corner 1012 of certain radian or angle, and book corner 1012 preferredly sets up to fillet structure or chamfer structure, and when rolling up corner 1012 and setting up to fillet structure, silicon steel sheet 2's annular structure is fillet square structure, and when rolling up corner 1012 and setting up to chamfer structure, silicon steel sheet 2's annular structure is chamfer square structure.

The iron core 1 of the present embodiment is divided into an upper iron yoke 101, a lower iron yoke 102, a left iron core column 103 and a right iron core column 104, the left iron core column 103 and the right iron core column 104 form an iron core column 6, the iron core 1 formed by a plurality of silicon steel sheets 2 is in an approximately elliptical shape, the upper iron yoke 101 and the lower iron yoke 102 are located on two sides of a major axis direction 7 of the approximately elliptical shape, the upper iron yoke 101 includes a straight line portion 1011 and a fillet 1012 located on two sides of the straight line portion 1011, and the lower iron yoke 102 and the upper iron yoke 101 have the same structure and are symmetrically distributed along a minor axis direction 8; the left core limb 103 and the right core limb 104 are positioned at two sides of the short axis direction 8 of the approximate ellipse, the left core limb 103 and the right core limb 104 are only provided with a straight line part 1011, and the left core limb 103 and the right core limb 104 have the same structure and are symmetrically distributed along the long axis direction 7.

As a preferable aspect of the present embodiment, the lengths of the straight line portions 1011 of all the silicon steel sheets 2 are the same, and the curvature or length of the wrap angle 1012 gradually increases from the inside to the outside. 3 positions of fracture on a plurality of adjacent silicon steel sheet 2 are adjacent to be set up, and is concrete, and a plurality of adjacent fractures 3 are gradient distribution on iron core post 6, along the cross section direction of this embodiment, and fracture 3 highly is the equidifferent distribution on iron core post 6, and a plurality of fractures 3 constitute open structure 5 jointly, and open structure 5 is parallelogram, and the quantity of open structure 5 on two iron core posts 6 equals, and 2 quantity of silicon steel sheet between two adjacent open structure 5 equals 3 quantities of fracture that two open structure 5 contain.

Part or all of the open structures 5 are distributed on the upper part of the core limb 6 in a staggered way, a plurality of open structures 5 are not adjacent to each other, and the middle part of the iron core 1 is provided with a cavity 4. The plurality of opening structures 5 include the same number of fractures 3, and the plurality of opening structures 5 have the same shape.

The invention also provides a method for sleeving the coil 11 on the iron core 1, which comprises the iron core rolling structure of the transformer and also comprises the following steps:

s1: the silicon steel sheets 2 are sequentially opened layer by layer from outside to inside along the fracture 3; after the fracture 3 on the left core limb 103 is opened, the upper port 301 of the fracture 3 is located above the right core limb 104; after the fracture 3 on the right core limb 104 is opened, the upper port 301 of the fracture 3 is located above the left core limb 103;

s2: after the silicon steel sheet 2 is completely opened at the fracture 3, a specific radian is kept above the iron core column 6 at the corner 1012 of the silicon steel sheet 2, a vacancy 10 is formed above the fracture 3, the vacancy 10 provides a spatial position for the radian at the corner 1012, and the iron core 1 is in a U-shaped structure after the silicon steel sheet 2 is completely opened;

s3: the guide cylinders 9 are respectively sleeved into two sides of the U-shaped structure, and then the coil 11 is sleeved on the iron core 1 along the direction of the guide cylinders 9;

s4: and (3) taking out the guide cylinder 9, folding the upper port 301 of the fracture 3 with the lower port 302 of the corresponding fracture 3, folding the silicon steel sheets 2 from inside to outside in sequence, restoring the iron core 1 to the fracture 3 which is distributed in a staggered manner from inside to outside, and completing the process of sleeving the coil 11 on the iron core 1.

In order to ensure that the upper part of the iron core 1 does not deform plastically when being vertical, the upper part of the iron core 1 is opened, and the upper part of the iron core is required to ensure a certain radian. When the upper part of the iron core 1 is opened, the upper cross-sectional area of the column of the upper part of the previous fracture 3 is reduced, the upper part of the lower port 302 of the fracture 3 vacates a part of the vacant site 10, at the moment, the upper iron yoke 101 vertically enters the vacant site 10, and the vacant site 10 provides a space structure for the fillet 1012, so that the fillet 1012 can not be subjected to plastic deformation after the iron core 1 is opened.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should fall within the protection scope of the present invention.