CN215770787U - Single-phase three-dimensional iron core and transformer - Google Patents

Abstract

The utility model discloses a single-phase three-dimensional iron core and a transformer. Wherein the single-phase three-dimensional core comprises a plurality of single frames, wherein each single frame comprises: an upper iron yoke; a lower iron yoke; the two ends of the first return yoke are respectively connected with the upper iron yoke and the lower iron yoke; the second side yoke is arranged opposite to the first side yoke, and two ends of the second side yoke are respectively connected with the upper iron yoke and the lower iron yoke; the second side yokes in the single frames are mutually attached and fixedly connected to form the core column. By using the single-phase three-dimensional iron core, the single frame does not need to be clamped when being erected, so that the problem that the iron core falls laterally in the industrial production process is avoided, and the production safety is improved.

Description

Single-phase three-dimensional iron core and transformer

Technical Field

The utility model relates to the field of power equipment, in particular to a single-phase three-dimensional iron core and a transformer.

Background

Along with the development of the transformer industry, the competition is increased, and each production enterprise also focuses on optimizing the product, improving the production efficiency and reducing the production cost so as to improve the market competitiveness of the product, but the production safety problem is not negligible while the production efficiency is improved.

The single-phase transformer is one of the transformers, its iron core is mostly to adopt the cross-section to be similar to the round rectangle single frame and fold the iron core structure, but the transformer that adopts this kind of iron core to produce has noise pitch, no-load loss is high, no-load current is big etc. shortcoming, and, when producing the iron core, need first cut into the iron core material into multiple different shapes earlier, then pile up the iron core material according to certain law, production efficiency is not high, when carrying out subsequent transformer production process, because this kind of iron core is single frame planar structure, can not rely on oneself to stand, can only carry out the centre gripping through the folder and fix, but if the centre gripping process is not handled well, the industrial accident that causes because of the iron core side falls easily takes place, threatens producers' life safety.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a single-phase three-dimensional iron core and a transformer, which can avoid the problem of iron core side falling in the industrial production process, thereby improving the production safety.

In a first aspect, an embodiment of the present invention provides a single-phase three-dimensional core, including a plurality of single frames, where each single frame includes: an upper iron yoke; a lower iron yoke; the two ends of the first return yoke are respectively connected with the upper iron yoke and the lower iron yoke; the second side yoke is arranged opposite to the first side yoke, and two ends of the second side yoke are respectively connected with the upper iron yoke and the lower iron yoke; the second side yokes in the single frames are mutually attached and fixedly connected to form the core column.

The single-phase three-dimensional iron core according to the embodiment of the first aspect of the utility model has at least the following beneficial effects:

the single-phase three-dimensional iron core provided by the technical scheme of the utility model is provided with a plurality of single frames, wherein each single frame comprises an upper iron yoke, a lower iron yoke, a first side yoke and a second side yoke, and then the second side yokes are mutually attached and fixedly connected to form a core column. By using the single-phase three-dimensional iron core, the single frame does not need to be clamped when being erected, so that the problem that the iron core falls laterally in the industrial production process is avoided, and the production safety is improved.

According to some embodiments of the first aspect of the present invention, the stem is a vertical structure, the upper yoke is located at an upper portion of the core, the lower yoke is located at a lower portion of the core, and the first side yoke is located at an outer side of the core.

Because the magnetic permeability of the iron core material is larger than that of air, the upper iron yoke, the lower iron yoke and the first side yoke are arranged outside the core column, so that the magnetic field can be conducted along the upper iron yoke, the lower iron yoke and the first side yoke in a more concentrated mode, the magnetic field distribution of the transformer is improved, and the electromagnetic radiation of the transformer to the environment is reduced.

According to some embodiments of the first aspect of the present invention, the second return yoke is provided with a slope for splitting the adjacent single frames.

When the single frames are spliced, the single frames can be aligned with each other through the inclined planes on the second return yokes, so that the splicing effect of the single frames is improved.

According to some embodiments of the first aspect of the present invention, the stem has a cross-sectional shape that is quasi-circular.

Because the stem is the amalgamation department of a plurality of single frames, the cross sectional shape that sets up the stem is the quasi-circular shape and can makes the connection of each second side yoke inseparabler for the amalgamation of a plurality of single frames is more firm, thereby avoids the iron core to topple over.

According to some embodiments of the first aspect of the present invention, the first and second side yokes are fan-like in cross-sectional shape, and the upper and lower yokes have a thickness less than half a cross-sectional diameter of the stem.

The cross section shapes of the first side yoke and the second side yoke are set to be fan-like, and the thickness of the upper iron yoke and the lower iron yoke is set to be less than half of the diameter of the cross section of the core column, so that the height of a single frame can be reduced, the height of the whole iron core is reduced, and the convenience of the use of the iron core is improved.

According to some embodiments of the first aspect of the present invention, the single frame is formed by continuously winding a plurality of silicon steel sheets or amorphous alloy strips.

The single frame is formed by continuously winding a plurality of silicon steel sheets or amorphous alloy strips, so that the single frame has no joint, and the iron core has the advantages of low noise, low no-load loss, low no-load current and the like.

According to some embodiments of the first aspect of the present invention, the number of the single boxes is three.

Three single frames are arranged, so that a stable fulcrum can be provided for the iron core to stand, and the production cost of the iron core is reduced.

According to some embodiments of the first aspect of the present invention, the plurality of single frames are uniform in height, and the plurality of single frames are aligned with each other.

The heights of the single frames are consistent and aligned with each other, so that the second side yokes of the single frames can be aligned with each other more closely and neatly, and the structure of the iron core is more compact and attractive.

According to some embodiments of the first aspect of the present invention, a surface of the core is provided with an insulating layer.

The insulating layer can prevent the iron core from rusting and solidify the iron core, so that the yield of the iron core is improved.

In a second aspect, an embodiment of the present invention provides a transformer, where the transformer includes a single-phase three-dimensional core that implements any one of the embodiments of the first aspect.

The transformer according to the embodiment of the second aspect of the utility model has at least the following advantages:

the transformer in the technical scheme of the utility model comprises the single-phase three-dimensional iron core of any one embodiment of the first aspect, wherein the iron core is provided with a plurality of single frames, each single frame comprises an upper iron yoke, a lower iron yoke, a first side yoke and a second side yoke, and then the second side yokes are mutually attached and fixedly connected to form a core column. By using the transformer, the single frame does not need to be clamped when being erected, the problem that the iron core of the transformer falls laterally in the industrial production process can be avoided, and the production safety of the transformer is improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments taken in conjunction with the accompanying drawings,

wherein:

fig. 1 is a schematic structural diagram of a single-phase three-dimensional core according to an embodiment of a first aspect of the present invention;

fig. 2 is a schematic structural view of the single-phase three-dimensional core shown in fig. 1 from another perspective;

fig. 3 is a schematic cross-sectional structure view of the single-phase solid core of fig. 1;

FIG. 4 is a schematic structural diagram of a single frame according to an embodiment of the first aspect of the present invention;

fig. 5 is a schematic cross-sectional structure of the single frame of fig. 1.

Reference numerals:

an upper iron yoke 100; a lower iron yoke 200; a first side yoke 300; a second return yoke 400; a single frame 500; a stem 600; a ramp 700.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

The embodiments of the present invention will be further explained with reference to the drawings.

Referring to fig. 1 and 2, the single-phase solid core includes, but is not limited to, a plurality of single frames 500. Each single frame 500 includes, but is not limited to, an upper yoke 100, a lower yoke 200, a first side yoke 300, and a second side yoke 400. Specifically, both ends of the first return yoke 300 are respectively connected to the upper and lower iron yokes 100 and 200; the second return yoke 400 is disposed opposite to the first return yoke 300, both ends of the second return yoke 400 are respectively connected to the upper yoke 100 and the lower yoke 200, and the second return yokes 400 of the plurality of single frames 500 are attached to each other and fixedly connected to form the stem 600.

It is understood that the single-phase solid core has a plurality of single frames 500, wherein each single frame 500 includes an upper yoke 100, a lower yoke 200, a first side yoke 300, and a second side yoke 400, and then the plurality of second side yokes 400 are coupled to each other to be fixedly coupled to form a stem 600. By using the single-phase three-dimensional iron core, the single frame 500 does not need to be clamped when standing, so that the problem of side falling of the iron core in the industrial production process is avoided, and the production safety is improved.

It should be noted that the number of the single frame 500 is at least three, and may also be four, five, and the like, and the embodiment does not limit the number. In addition, the shape of the single frame 500 may be square, rectangular, etc., and the present embodiment does not limit the shape.

Referring to fig. 1, it is possible to provide the stem 600 in a vertical structure, with the upper yoke 100 positioned at the upper portion of the core, the lower yoke 200 positioned at the lower portion of the core, and the first side yoke 300 positioned at the outer side of the core.

It can be understood that since the permeability of the core material is greater than that of air, disposing the upper, lower and first side yokes 100, 200 and 300 outside the leg 600 can conduct the magnetic field more intensively along the upper, lower and first side yokes 100, 200 and 300, thereby improving the magnetic field distribution of the transformer and reducing the electromagnetic radiation of the transformer to the environment.

Referring to fig. 3, the cross-sectional shape of the stem 600 is round-like. It can be appreciated that, since the core pillar 600 is a split of the plurality of single frames 500, the cross section of the core pillar 600 is approximately circular, so that the connection of the second side yokes 400 is tighter, the split of the plurality of single frames 500 is more stable, and the core is prevented from falling.

Referring to fig. 3 and 5, the second return yoke 400 is provided with a slope 700 for splitting the adjacent single frames 500. It is understood that a plurality of the single frames 500 may be aligned with each other by the inclined planes 700 of the respective second side yokes 400 when being split, thereby improving the split effect of the single frames 500.

Referring to fig. 3 and 5, the cross-sectional shapes of the first and second side yokes 300 and 400 are fan-like, and the thicknesses of the upper and lower yokes 100 and 200 are less than half the cross-sectional diameter of the stem 600. It can be understood that the height of the single frame 500 can be reduced by setting the cross sections of the first and second side yokes 300 and 400 to be approximately fan-shaped and the thicknesses of the upper and lower yokes 100 and 200 to be half of the cross-sectional diameter of the core barrel 600, thereby reducing the height of the entire core and improving the convenience of use of the core.

Illustratively, the single frame 500 is formed by continuously winding a plurality of silicon steel sheets or amorphous alloy strips. It can be understood that the single frame 500 is formed by continuously winding a plurality of silicon steel sheets or amorphous alloy strips, so that the single frame 500 has no seam, and the iron core has the advantages of low noise, low no-load loss, low no-load current and the like.

Illustratively, as shown in FIG. 4, the number of single boxes 500 is three. It can be understood that the provision of the three single frames 500 can provide a stable fulcrum for the erection of the core, reducing the production cost of the core.

Referring to fig. 1, the plurality of single frames 500 have the same height, and the plurality of single frames 500 are aligned with each other. It can be understood that the plurality of single frames 500 are formed to have the same height and are aligned with each other, so that the second side yokes 400 of the plurality of single frames 500 are aligned with each other more closely and neatly, thereby making the structure of the core more compact and beautiful.

Illustratively, the surface of the core is provided with an insulating layer (not shown). It can be understood that the provision of the insulating layer enables the core to be cured and prevents the core from rusting, thereby improving the yield of core production.

It should be noted that the material of the insulating layer may be insulating glue, insulating varnish, etc., and this embodiment does not limit this.

Exemplary, the processing steps of the single-phase three-dimensional core may specifically include, but are not limited to, the following steps.

1. And calculating the size of the iron core material belt according to the size of the iron core, and then processing the iron core material belt into a plurality of iron core material belts with specific shapes according to the size of the iron core material belt.

2. The head of the first strip of iron core material tape is fixed on the iron core inner die, and then the iron core material tape is wound one by one according to the winding sequence to form the single frame 500 of the iron core. It can be understood that during the winding process, tension needs to be applied to the core material belt, so that the core is wound more tightly, and the filling rate of the core is increased. It should be noted that, the winding of the iron core material belt can be automated by using mechanical equipment, thereby improving the production efficiency.

3. After the plurality of single frames 500 are wound, the iron core is assembled. Specifically, the alignment and height of the plurality of single frames 500 are adjusted to be uniform, and then the core is split such that the core split portion forms an approximately circular stem 600. It can be understood that, when the cross-section of the core pillar 600 is circular-like, the split between the plurality of single frames 500 is more compact.

4. And binding and fixing the iron core. It will be appreciated that this avoids loose shifting of the core during annealing.

5. And annealing the iron core. It will be appreciated that this eliminates core stress and restores the material properties of the core.

6. And removing the materials for binding and fixing, then binding and fixing the iron core by using the insulating materials, and removing the inner die of the iron core.

7. And (3) uniformly coating insulating paint on the iron core, and fixing and performing anti-rust treatment on the iron core.

Through the steps, the single-phase three-dimensional iron core in the technical scheme can be produced, the iron core is changed from the traditional single-frame 500 easy-to-topple structure into a structure without clamping and toppling, so that the problem of iron core side toppling in the industrial production process is avoided, and the production safety is improved.

The transformer according to the second aspect of the present invention is proposed based on the single-phase three-dimensional core according to the first aspect of the present invention.

A transformer according to an embodiment of the second aspect of the present invention includes the single-phase solid core according to any one of the first aspect, and the core has a plurality of single frames, wherein each single frame 500 includes an upper yoke 100, a lower yoke 200, a first side yoke 300, and a second side yoke 400, and then the second side yokes 400 are fixedly coupled to each other to form the leg 600. By using the transformer, the single frame 500 does not need to be clamped when standing, so that the problem that the iron core of the transformer falls laterally in the industrial production process is avoided, and the production safety of the transformer is improved.

Since the transformer according to the second aspect of the present invention includes the single-phase three-dimensional core according to any one of the embodiments of the first aspect, specific implementation manners and technical effects of the transformer according to the second aspect of the present invention may refer to the specific implementation manners and technical effects of the single-phase three-dimensional core according to any one of the embodiments of the first aspect, and will not be described herein again.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (6)

1. A single-phase solid core comprising a plurality of single frames, wherein each of the single frames comprises:

an upper iron yoke;

a lower iron yoke;

the two ends of the first return yoke are respectively connected with the upper iron yoke and the lower iron yoke;

the second side yoke is arranged opposite to the first side yoke, and two ends of the second side yoke are respectively connected with the upper iron yoke and the lower iron yoke;

the core column is characterized in that the first side yokes in the single frame are not in contact with each other, the second side yokes in the single frame are attached to and fixedly connected with each other to form a core column, the number of the core columns is one, the core column is of a vertical structure, the upper iron yoke is located on the upper portion of the core, the lower iron yoke is located on the lower portion of the core, the first side yokes are located on the outer side of the core, the cross section of the core column is circular-like, the cross sections of the first side yokes and the second side yokes are fan-like, and the thicknesses of the upper iron yoke and the lower iron yoke are smaller than half of the cross section diameter of the core column.

2. The single-phase solid core according to claim 1, wherein: and the second side yoke is provided with an inclined plane for splicing the adjacent single frames.

3. The single-phase solid core according to claim 1, wherein: the single frame is formed by continuously winding a plurality of silicon steel sheets or amorphous alloy strips.

4. The single-phase solid core according to claim 1, wherein: the heights of the single frames are consistent, and the single frames are aligned with each other.

5. The single-phase solid core according to claim 1, wherein: and an insulating layer is arranged on the surface of the iron core.

6. A transformer, characterized by: the single-phase solid core as claimed in any one of claims 1 to 5.

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