WO2014123277A1

WO2014123277A1 - Method for manufacturing wound core transformer and wound core transformer manufactured thereby

Info

Publication number: WO2014123277A1
Application number: PCT/KR2013/003190
Authority: WO
Inventors: 김기성
Original assignee: (주)현대에스더블유디산업
Priority date: 2013-02-07
Filing date: 2013-04-16
Publication date: 2014-08-14

Abstract

The present invention relates to a wound core transformer for reducing electric loss and comprises the steps of: (a) preparing a coil former having a cylindrical structure; (d) dividing an iron core strip in a predetermined length to be inserted into the coil former and forming an annular ring shape by winding the iron core strip in a doughnut shape so as to form each of the divided iron core strips having a larger diameter than that of the coil former; (e) in a state of positioning the coil former inside the annular ring of one side of the iron core strip and enabling an inner end of the one side of the iron core strip to pass through the inside of the coil former, relatively rotating the annular ring of the iron core strip with respect to the coil former while densely winding the iron core strip around the coil former; and (f) completing one side of the wound core by attaching an outer end of the iron core strip to the coil former after completely winding the iron core strip around the coil former.

Description

Method for manufacturing a core core transformer and a core core transformer manufactured by the same

The present invention relates to a winding coil core transformer with a low electrical loss and a method of manufacturing the same. More particularly, the winding core coil is wound around a wire and then wound around the core to form a wound core coil. The present invention relates to a winding wound core transformer with low loss and a method of manufacturing the same.

Several types of transformers exist as main electrical equipment in power plants, substations, power lines, control equipment and measuring equipment. It is the principle of transformer by electromagnetic exchange, electromagnetic induction and coil Faraday's law. According to the structure and arrangement of the iron core and the winding forming the transformer, it is classified into inner type, outer type and winding core type transformer. A general transformer is assembled by inserting an iron core into a winding frame wound around a wire, but there is a problem in that a substantial amount of magnetic flux leaks there due to the inherent characteristics of the magnetic field.

On the other hand, a coil core transformer is a transformer using an iron core made by swirling a directional silicon steel strip rolled in a continuous ribbon shape. Since there is no iron core, there is little loss and very good magnetic characteristics. High current efficiency due to low current

However, there is a disadvantage in that large-capacity ones are disadvantageous because of the difficulty in winding. In order to solve the drawback of the inconvenience of winding, there is also a cut core, which cuts the ring once to accommodate the coil and then joins the cut surface, and when the cut core is used, characteristics close to the core core can be obtained.

Nevertheless, the cut core method is limited to the loss of the magnetic flux to some extent because the core is disconnected, compared to the complete ring structure.

[Preceding technical literature]

[Patent Documents]

(Patent Document 1) KR Application No. 10-2001-7002781 Transformer Core Application Date 2001.03.02.

(Patent Document 2) KR Application No. 10-1997-0709399 Transformer application date 1997.12.15.

The winding winding core-type transformer with low electrical loss according to the present invention has no vibration compared to a conventional transformer core, so that the noise is low, the manufacturing is easy, and the waste of material is prevented.

In addition, such a coil core transformer should first be wound around the wire, and then the core of the transformer should be wound. However, in the case of a large capacity in which the length of the core should be several hundred meters (m), the method of winding the wire into the winding frame wound There was no prior art.

In other words, although there is a very strong Troydal internal type transformer, it is not suitable as a high voltage transformer because it is difficult to insulate between windings wound with conductors. Therefore, after the iron core is iron-cored with an external iron type, put the winding frame wound around the wire and assemble it into the iron core again, or wrap the spirally cut red iron core once in the winding frame wound with the wire and assemble it. There was a fundamental limitation that there is a lot of iron loss, according to the present invention, all the above problems can be solved.

In order to achieve the object of the present invention, a method of manufacturing a low-knock core transformer in which a coil core is wound around a core of a coil core according to an aspect of the present invention does not have a seat. The winding of one side of the low voltage together with the insulating paper 13 is first wound around the fitting portion of the housing 10, and the other winding of the high voltage is also wound together with the insulating paper while the insulating paper 13 is insulated thereon, and then back to the outside of the insulating paper. Preparing a winding frame (1) having a cylindrical structure of wrapping; (d) The core strips to be put into the winding frame (1) wound by winding the primary and secondary windings are divided into predetermined lengths, each of which is wound in a doughnut shape so as to have a diameter slightly larger than the winding frame, and the core strips are annular loops. Forming in shape; (e) In the state in which the winding frame 1 is positioned inside the annular ring of the one iron core strip 2 and the inner end 2a of the one iron core strip 2 is passed into the winding frame, the iron core strip ( 2) while rotating the annular ring in one direction with respect to the winding frame, or rotating the winding frame (1) in the other direction with respect to the iron core strip (2) annular ring, or the iron core strip (2) annular ring Rotating the winding frame (1) in the other direction with respect to the iron core strip (2) annular ring while simultaneously rotating the winding frame in one direction with respect to the winding frame such that the iron core strip is tightly wound on the winding frame; And (f) winding all of the iron core strips 2 to the winding mold 1 and then attaching the outer end 2b of the inner core strip 2 to the winding mold 1 to complete one winding core 3. Making; Characterized in that it comprises a.

Preferably, (g) the winding frame 1 wound around the one winding core is placed inside the annular ring of the other iron core strip 2 'and the inner end 2 of the annular ring of the other iron core strip 2'. 'a) is passed through the inside of the winding frame, while rotating the annular ring of the other iron core strip (2') in one direction, or the winding frame (1) to the other iron core strip (2 ') annular ring The winding frame 1 against the other iron core strip 2 'annular ring while rotating the other iron core strip 2' annular ring relative to the winding frame while rotating in the other direction. Rotating the other core strip tightly wound on a winding frame while rotating in the other direction; And (h) winding the other iron core strip 2 'to the winding frame 1 and then attaching the outer end 2'b of the iron core strip to the winding frame 1 to attach the other winding core 3'. Completing step; It characterized in that it further comprises.

Also preferably, in the step (e), the inner end 2a of the iron core strip is fixed at one point of the winding frame, and the outer end 2b of the iron core strip is temporarily fixed at an outer point of the iron core strip. It is characterized by that.

More preferably, the winding frame is a three-phase winding winding frame (1 '), characterized in that repeating step (g) and (h) once more.

Also preferably, after step (a), (b ') the winding frame 1 is positioned inside the annular ring of the iron core strip 2 and the inner end 2a of the donut core strip is wound. Temporarily passing the inner end (2a) of the iron core strip (2) to an inner point of the donut-shaped iron core strip by an adhesive means in the state passed through therein; (c ') rotating the iron core strip 2 relative to the winding frame and repeatedly rotating the iron core strip 2 to a suitable length, and cutting the iron core strip by cutting means when the length is appropriate. (d ') After separating the end 2a of the iron core strip 2 temporarily fixed to the inner point of the iron core strip 2 from the inner one point, the adhesive means also adheres to one point of the core core. Fixing to; (e ') allowing the iron core strip to be tightly wound around the winding frame while rotating the winding frame (1) relative to the iron core strip (2) annular ring; And (f ') winding the iron core strip 2 to the winding mold 1 and then attaching the outer end 2b of the inner iron core strip 2 to the winding mold 1 so that one winding core 3 is attached. Completing step; Characterized in that it comprises a.

Most preferably, the steps (b ') to (f') are repeated on the opposite side, so that the two winding cores 3 and 3 'are completed.

According to another aspect of the present invention for achieving the above object, there is provided a low-core electric coil transformer with a low electric loss made by winding the transformer iron core in the winding core type so that there is no seat connecting the iron core of each of the winding cores produced by the above methods .

The winding winding core-type transformer with low electrical loss according to the present invention can obtain the following effects.

first. Since there is no space between the transformer cores, it cuts and prevents waste of iron core material consumed when connecting.

second. Since there is no space between the transformer cores, the time to assemble the cores can be reduced. Iron core winding machines are also available.

third. Since there is no space between the cores of the transformer, there is no noise that the cores collide with and there is less iron loss than a conventional transformer having the same core mass.

Figure 1 is a conventional transformer iron core to assemble the iron core after putting the core and the core winding the winding wire wound around the wire.

Figure 2 is a perspective view of a wound coil core transformer according to a first embodiment of the present invention.

Figure 3 is a first perspective view for explaining a winding coil core transformer manufacturing method according to a first embodiment of the present invention.

4 is a second perspective view for explaining a method for manufacturing a wound wound core transformer according to a first embodiment of the present invention.

5 is a third perspective view for explaining a method for manufacturing a wound coil core transformer according to a first embodiment of the present invention.

6 is a fourth perspective view for explaining a method for manufacturing a wound coil core transformer according to a first embodiment of the present invention.

7 is a fifth perspective view for explaining a method for manufacturing a wound wound core transformer according to a first embodiment of the present invention.

8 is a sixth perspective view for explaining a method for manufacturing a wound coil core transformer according to a first embodiment of the present invention.

9 is a seventh perspective view illustrating a method of manufacturing a wound coil core transformer according to a first embodiment of the present invention.

10 is a perspective view for explaining a method for manufacturing a wound winding core-type three-phase transformer according to a second embodiment of the present invention.

11 is a real picture winding winding core transformer according to the present invention.

12 is a first perspective photograph for explaining a method of manufacturing a wound wound core transformer according to a third embodiment of the present invention.

13 is a second perspective photograph for explaining a method of manufacturing a wound wound core transformer according to a third embodiment of the present invention.

14 is a third perspective view illustrating a method of manufacturing a wound wound core transformer according to a third embodiment of the present invention.

15 is a fourth perspective view for explaining a method for manufacturing a wound core core transformer according to a third embodiment of the present invention.

16 is a fifth perspective view for explaining a method for manufacturing a wound wound core transformer according to a third embodiment of the present invention.

17 is a sixth perspective photograph for describing a method of manufacturing a wound coil core transformer according to a third embodiment of the present invention.

18 is a seventh perspective photograph for describing a method of manufacturing a wound wound core-type transformer according to a third exemplary embodiment of the present invention.

19 is a final perspective photograph for explaining a method of manufacturing a wound wound core transformer according to a third embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in this specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly incorporate the concept of terms in order to best describe their invention. It should be interpreted as meanings and concepts in accordance with the technical spirit of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical idea of the present invention, various equivalents that may be substituted for them at the time of the present application It should be understood that there may be variations and variations.

For reference, it is preferable to use the thinnest iron core of the silicon steel sheet as the iron core used in the winding winding core transformer having low electrical loss of the present invention. For example, a silicon steel strip-shaped iron core having a thickness of 0.23 mm and a width of 100 mm may be used. This does not have to be easily broken. Since there is no seat to connect the iron core, there is almost no movement of the iron core, it is easy to manufacture and it prevents waste of materials.

(First embodiment)

First, a method for manufacturing a coil core transformer having low electrical loss according to the first embodiment of the present invention will be described with reference to FIGS. 2 to 9.

First, as shown in Figure 3, the iron core strips to enter the winding frame (1) wound by winding the primary and secondary windings are divided into two so as to have a suitable length (for example, several tens of meters (m)), Each is wound in a doughnut shape to have a diameter slightly larger than the winding frame to form an annular ring shape. In this case, as shown in Figure 2, the winding of the low voltage (in this case, the primary winding) with the insulating paper 13 first wound around the fitting portion of the cylindrical housing 10, and the insulating paper 13 thereon In the insulated state, the high voltage winding (here secondary winding) is also wound with insulation paper, and then it has a cylindrical structure that is wrapped with insulation paper on the outside, and one terminal 11a and the other terminal 11b of the primary winding are Inwardly, one terminal 12a and the other terminal 12b of the secondary winding 12 extend from the outside to the outside. That is, since a coil located inwardly has a high possibility of contacting the winding core, it is desirable to allow a winding of low pressure to be wound inward as much as possible.

Second, as shown in FIGS. 4 and 5, the winding frame 1 is positioned inside the annular ring of the divided one core core strip 2 (see FIG. 4) and the inner end 2a of the one iron core is wound. With the inner core passed through (see Fig. 5), the iron core strip (2) is rotated slowly in the direction of the arrow in Fig. 5 (and / or the winding frame in the opposite direction of the arrow) to form a circle and the core strip is wound. Make sure to close the mold tightly. At this time, it is preferable that the inner end 2a of the iron core strip is fixed at one point of the winding frame, and the outer end 2b of the iron core strip is temporarily fixed at one point of the outer side of the iron core strip.

Third, as shown in FIG. 6, the iron core strip 2 is wound around the winding mold 1 and then the outer end 2b of the inner core strip 2 is attached to the winding mold 1. This completes one side of the core (3), it is now possible to form the right winding frame in the same way.

Fourth, as shown in Fig. 7, the winding frame 1 is also located inside the annular ring of the divided right iron core strip 2 'and the inner end 2'a of the right iron core passes through the winding frame. In this state (see Fig. 7), while rotating the iron core strip 2 'in the direction of the arrow in Fig. 7 (and / or while rotating the winding frame in the opposite direction of the arrow), slowly turn in a circle and the core strip is placed on the right side of the winding frame. Make sure to wind tightly. At this time, it is also preferable that the inner end 2'a of the iron core strip is fixed at one point of the winding frame, and the outer end 2'b of the iron core strip is temporarily fixed at an outer point of the iron core strip. .

Fifth, as shown in Fig. 8, the right iron core strip 2 'is also slowly rotated (and / or rotating the winding frame in the opposite direction of the arrow) as shown in the second step above to rotate the circle. Draw and wind.

Sixth, as shown in FIG. 9, the right iron core strip 2 ′ is wound around the right side of the winding mold 1, and then the outer end 2 ′ b of the right iron core strip 2 ′ is wound around the winding mold 1. Attach to As a result, the right winding core 3 'was also completed, and both iron core strips were wound on the left and right sides of the winding frame, thereby forming a winding core having less electrical loss. As a result, the left and right winding cores 3 and 3 'are sufficiently tightly wound on the winding frame 1, thereby completing a winding core transformer (see FIG. 11) with less electrical loss.

The coil core-type transformer completed by this method can form a core strip of several tens of meters in length without a seam, so that the magnetic flux loss is remarkably low, and the winding of each core can be in close contact. Therefore, the noise can be reduced, and the insulation problem between the coil and the coil is naturally solved. Therefore, the high voltage and high power can be used as a transformer.

(2nd Example)

As shown in FIG. 10, the winding winding core-type three-phase transformer with less electrical loss is disposed by fixing three winding frames (1, 1 ', 1 ") wound by winding wires in a triangle shape, and then fixing the core strips. Each of the three windings (1, 1 ', 1 ") is wound, and each winding method is performed by repeatedly performing the second, third, and fourth steps of the first embodiment with respect to each of the winding frames, thereby reducing electrical losses. Three winding

cores

3, 3 ', 3 "are possible, and a winding core three-phase transformer having the advantages of the first embodiment as well as the advantages of the three-phase transformer can be completed.

(Third Embodiment)

Now, with reference to FIGS. 12 to 19, the wound core of the third embodiment wound to be tighter than the winding core of the first embodiment will be described.

(1) This third embodiment is based on the premise that the iron core strip is wound into a doughnut shape of sufficiently large diameter as shown in FIG. As shown in FIGS. 12 and 13, the winding frame 1 is positioned inside the annular ring of the iron core strip 2 and the inner end 2a of the donut core strip is passed into the winding frame ( 12), the inner end 2a of the iron core strip 2 is temporarily fixed to one point inside the donut iron core strip by means of an adhesive such as double-sided tape.

(2) As shown in Fig. 14 and Fig. 15, the iron core strip 2 is rotated relative to the winding frame as shown in Fig. 14 and repeatedly rotated until it is a proper length. Cut by means. At this time, all the cut iron strip is to pass through the inside of the winding core (see Fig. 15).

(3) As shown in Figs. 16 to 18, the end portion 2a of the iron core strip 2, which is temporarily fixed to an inner point of the iron core strip 2 by an adhesive tape or the like, is moved from the inner one point. After separation, it is also fixed to one point of the iron core by an adhesive means such as an adhesive tape (see FIG. 16). Thereafter, the donut-type iron core strip is rotated relative to the winding frame as shown in FIG. 17, but the core strip is closely wound on the winding frame. As shown in Fig. 18, the winding is continued. In this case, the outer end 2b of the iron core strip may be temporarily fixed to an outer point of the iron core strip to facilitate the relative rotation.

(4) As shown in FIG. 18, the iron core strip 2 is wound around the winding mold 1 and then the outer end 2b of the iron core strip 2 is fixed to the winding mold 1. This completes one side of the core (3), it is now possible to form the other side of the core in the same way.

(5) By repeating steps (a) to (d) on the opposite side, as shown in FIG. 19, a wound core transformer in which both winding cores 3 are completed is completed.

Since the coil core transformer completed by the above method divides one side of the coil core forming process into two, the iron core strip may be manufactured in a more tightly pressed form than the coil core of the transformer of the first embodiment.

Therefore, the present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those of ordinary skill in

Claims

(a) Winding one winding of low voltage together with insulating paper 13 and then winding the other winding of high voltage together with insulating paper in the state of insulated with insulating paper 13 thereon. Preparing a winding frame (1) having a cylindrical structure wrapped with insulating paper on the outside again;

(d) The core strips to be put into the winding frame (1) wound by winding the primary and secondary windings are divided into predetermined lengths, each of which is wound in a doughnut shape so as to have a diameter slightly larger than the winding frame, and the core strips are annular loops. Forming in shape;

(e) In the state in which the winding frame 1 is positioned inside the annular ring of the one iron core strip 2 and the inner end 2a of the one iron core strip 2 is passed into the winding frame, the iron core strip ( 2) while rotating the annular ring in one direction with respect to the winding frame, or rotating the winding frame (1) in the other direction with respect to the iron core strip (2) annular ring, or the iron core strip (2) annular ring Rotating the winding frame (1) in the other direction with respect to the iron core strip (2) annular ring while simultaneously rotating the winding frame in one direction with respect to the winding frame such that the iron core strip is tightly wound on the winding frame; And

(f) winding both the core strip 2 to the winding frame 1 and then attaching the outer end 2b of the inner core strip 2 to the winding frame 1 to complete one winding core 3; step;

Method for producing a low-knock core transformer with a low electrical loss made by winding the transformer core core winding type so that there is no seat connecting the iron core of each winding core, characterized in that it comprises a.
The method of claim 1,

(g) The winding frame 1 wound around one side of the core is placed inside the annular ring of the other iron core strip 2 'and the inner end 2'a of the annular ring of the other iron core strip 2' is placed. In the state passed through the winding frame, while rotating the annular ring of the other iron core strip (2 ') in one direction, or the winding frame (1) in the other direction with respect to the other iron core strip (2') annular ring While rotating or rotating the other iron core strip 2 'annular ring in one direction with respect to the winding frame while simultaneously rotating the winding machine 1 in the other direction with respect to the other iron core strip 2' annular ring. At the same time, the other iron core strip is tightly wound around the winding frame; And

(h) The other iron core strip 2 'is wound around the winding frame 1, and then the outer end 2'b of the iron core strip is attached to the winding frame 1 to complete the other winding core 3'. Making;

The method of manufacturing a low-pound coil core transformer, the electrical loss is made by winding the transformer core in a coil core type so that there is no seat connecting the iron core of each winding core further comprising a.
The method of claim 1,

In the step (e), the inner end 2a of the iron core strip is fixed at one point of the winding frame, and the outer end 2b of the iron core strip is temporarily fixed at one point of the outer side of the iron core strip. A method of manufacturing a low-knock core transformer in which a transformer core is wound around a coil core so that there is no space between the iron cores of each winding core.
The method of claim 2,

The winding frame is a winding frame (1 ') of three-phase winding, the transformer iron core so that there is no seat after the iron core of each winding core, characterized in that the steps (g) and (h) are repeated once more. A method for manufacturing a coil core transformer with low electrical loss made from a mold.
(a) Winding one winding of low voltage together with insulating paper 13 and then winding the other winding of high voltage together with insulating paper in the state of insulated with insulating paper 13 thereon. Preparing a winding frame (1) having a cylindrical structure wrapped with insulating paper on the outside again;

(b ') With the winding frame 1 positioned inside the annular ring of the iron core strip 2 and the inner end 2a of the donut core strip being passed into the winding frame, Temporarily fixing an inner end (2a) to an inner point of the donut iron core strip by an adhesive means;

(c ') rotating the iron core strip 2 relative to the winding frame and repeatedly rotating the iron core strip 2 to a suitable length, and cutting the iron core strip by cutting means when the length is appropriate.

(d ') After separating the end 2a of the iron core strip 2 temporarily fixed to the inner point of the iron core strip 2 from the inner one point, the adhesive means also adheres to one point of the core core. Fixing to;

(e ') allowing the iron core strip to be tightly wound around the winding frame while rotating the winding frame (1) relative to the iron core strip (2) annular ring; And

(f ') The iron core strip 2 is wound around the winding frame 1, and then the outer end 2b of the inner core strip 2 is attached to the winding frame 1 to complete one winding core 3 Making;

Method for producing a low-knock core transformer with a low electrical loss made by winding the transformer core core winding type so that there is no seat connecting the iron core of each winding core, characterized in that it comprises a.
The method of claim 5,

By repeating the steps (b ') to (f') on the opposite side, it is recommended that the transformer cores are not spaced from the iron cores of each winding core, characterized in that both winding cores 3 and 3 'are completed. A method of manufacturing a wound core transformer with low electrical loss wound by iron core type.
A low-core electric transformer made by winding the transformer core in a wound core type such that there is no space between the iron cores of each wound core manufactured by the method of any one of claims 1 to 6.