Bushing for high frequency transformer

Abstract

The present invention relates to a rectangular frame, which may comprise: a core part having a horizontal portion formed in the center thereof so as to form an upper hole and a lower hole; a winding part coupled through the core part; a bushing part which is coupled to one side of the winding part and which has a bellows-shaped exterior; and a sealing part disposed at a connection point between the winding part and the bushing part.

Description

Bushings for high-frequency transformers

[0001] The present invention relates to a bushing for a high-frequency transformer. More specifically, the invention relates to a bushing for a high-frequency transformer that can prevent problems such as insulation breakdown and fire by installing a seal on the outside of the bushing to extend the electric field transmission path and alleviate electric field concentration.

[0002] Generally, high-frequency transformers operate at high voltages and high frequencies, and in these operating environments, the strength of electric and magnetic fields increases. This can lead to electric field concentration within the transformer, which can cause problems such as insulation breakdown and fire.

[0003] In addition, bushings are components that connect the inside and outside of a transformer and are responsible for transmitting the electric field from the inside of the transformer, where high voltage flows, to the outside.

[0004] However, conventional bushings lacked sealing technology to mitigate electric field concentration, which could lead to problems caused by the concentration of electric fields.

[0005] Therefore, there is a need for bushings for high-frequency transformers that can mitigate electric field concentration.

[0006] Accordingly, the present invention has been devised to solve the aforementioned problems and aims to provide a bushing for a high-frequency transformer that can prevent problems such as insulation breakdown and fire by installing a seal on the outside of the bushing to extend the electric field transmission path and alleviate electric field concentration.

[0007] A bushing for a high-frequency transformer according to one embodiment of the present invention may include: a core portion having a horizontal portion formed in the center of a rectangular frame to form an upper hole and a lower hole; a winding portion coupled through the core portion; a bushing portion coupled to one side of the winding portion and having a bellows-like shape; and a sealing portion disposed at the connection point between the winding portion and the bushing portion.

[0008] The above winding portion may include a first winding member penetrating the upper hole; and a second winding member penetrating the lower hole.

[0009] The first winding member and the second winding member are formed integrally, and a through hole through which the horizontal portion passes may be formed.

[0010] The above winding member may include a first direct connection member, one side of which is bent and extended from the corner of the first winding member and extends in the direction of the lower hole to be directly connected to the core member; and a second direct connection member, the other side of which is curved and extended from the corner of the first winding member and extends in the direction of the lower hole to be directly connected to the core member.

[0011] The first direct connection member and the second direct connection member are formed with a vertical length longer than that of the core part to support the core part, so that a gap hole may be formed between the lower surface of the core part and the first direct connection member and the second direct connection member.

[0012] The first direct connection member above can be coupled to the bushing part above.

[0013] The above bushing portion may have a placement groove formed therein in which the sealing portion is placed.

[0014] The above-mentioned placement groove may include a plurality of fixing protrusions that protrude so as to fix the sealing portion from the placement groove.

[0015] The sealing portion may be detachable from the placement groove.

[0016] The sealing portion may have a plurality of insertion grooves formed by being recessed to correspond to the plurality of fixing protrusions.

[0017] The bushing for a high-frequency transformer according to the present invention has the effect of preventing problems such as insulation breakdown and fire by installing a seal on the outside of the bushing to extend the electric field transmission path and alleviate electric field concentration.

[0018] In addition, by preventing problems such as insulation breakdown and fire caused by electric field concentration, not only can the durability of the transformer be improved, but maintenance costs can also be reduced as such problems do not occur.

[0019] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by a person skilled in the art from the description below.

[0020] FIG. 1 is a drawing showing a bushing for a high-frequency transformer according to one embodiment of the present invention.

[0021] FIG. 2 is a drawing showing a bushing for a high-frequency transformer according to one embodiment of the present invention.

[0022] FIG. 3 is a drawing showing the core portion of a bushing for a high-frequency transformer according to one embodiment of the present invention.

[0023] FIG. 4 is a drawing showing the bushing portion and the sealing portion of a bushing for a high-frequency transformer according to one embodiment of the present invention.

[0024] A bushing for a high-frequency transformer according to one embodiment of the present invention may include: a core portion having a horizontal portion formed in the center of a rectangular frame to form an upper hole and a lower hole; a winding portion coupled through the core portion; a bushing portion coupled to one side of the winding portion and having a bellows-like shape; and a sealing portion disposed at the connection point between the winding portion and the bushing portion.

[0025] The above winding portion may include a first winding member penetrating the upper hole; and a second winding member penetrating the lower hole.

[0026] The first winding member and the second winding member are formed integrally, and a through hole through which the horizontal portion passes may be formed.

[0027] The above winding member may include a first direct connection member, one side of which is bent and extended from the corner of the first winding member and extends in the direction of the lower hole to be directly connected to the core member; and a second direct connection member, the other side of which is curved and extended from the corner of the first winding member and extends in the direction of the lower hole to be directly connected to the core member.

[0028] The first direct connection member and the second direct connection member are formed with a vertical length longer than that of the core part to support the core part, so that a gap hole may be formed between the lower surface of the core part and the first direct connection member and the second direct connection member.

[0029] The first direct connection member above can be coupled to the bushing part above.

[0030] The above bushing portion may have a placement groove formed therein in which the sealing portion is placed.

[0031] The above-mentioned placement groove may include a plurality of fixing protrusions that protrude so as to fix the sealing portion from the placement groove.

[0032] The sealing portion may be detachable from the placement groove.

[0033] The sealing portion may have a plurality of insertion grooves formed by being recessed to correspond to the plurality of fixing protrusions.

[0034] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Accordingly, in some embodiments, well-known process steps, well-known device structures, and well-known techniques are not specifically described to avoid the present invention being interpreted ambiguously. Throughout the specification, like reference numerals refer to like components.

[0035] In this specification, terms such as first, second, third, etc., may be used to describe various components, but these components are not limited by these terms. The terms are used for the purpose of distinguishing one component from other components. For example, without departing from the scope of the present invention, the first component may be named the second or third component, and similarly, the second or third component may be named alternately.

[0036]

[0037] FIG. 1 is a drawing showing a bushing for a high-frequency transformer according to one embodiment of the present invention, FIG. 2 is a drawing showing a bushing for a high-frequency transformer according to one embodiment of the present invention, FIG. 3 is a drawing showing a core part of a bushing for a high-frequency transformer according to one embodiment of the present invention, and FIG. 4 is a drawing showing a bushing part and a sealing part of a bushing for a high-frequency transformer according to one embodiment of the present invention.

[0038] Referring to FIGS. 1 to 4, a bushing (10) for a high-frequency transformer according to one embodiment of the present invention includes a core part (100), a winding part (200), a bushing part (300), and a sealing part (400).

[0039] The core part (100) is a square-shaped frame, and a horizontal part (110) is formed in the center to form an upper hole (101) and a lower hole (102). The core part (100) is a ferrite core, which is a core made using a magnetic material, and the core part (100) concentrates electromagnetic energy. Additionally, the core part (100) may be GND. GND can be used as an abbreviation for ground.

[0040] The winding section (200) is coupled through the core section (100). This winding section (200) may include a first winding member (210) and a second winding member (220). The first winding member (210) may pass through the upper hole (101). And the second winding member (220) may pass through the lower hole (102). In addition, the first winding member (210) and the second winding member (220) are formed integrally, and a through hole (201) through which the horizontal section (110) passes may be formed.

[0041] Additionally, the winding section (200) may further include a first direct connection member (230) and a second direct connection member (240). Here, the first direct connection member (230) is bent and extended from the corner of the first winding member (210) to one side of the winding section (200), and extends in the direction of the lower hole (102) so as to be directly connected to the core section (100).

[0042] Additionally, a bushing portion (300) may be coupled to the first direct connection member (230). At this time, it is preferable that the first direct connection member (230) be formed flat along the vertical length and that the bushing portion (300) be positioned in the center of the first direct connection member (230). At this time, the bending is formed such that the point where the corners of the first direct connection member (230) on one side of the winding portion (200) (left side based on FIG. 2) are connected is formed as an angle.

[0043] And the second direct connection member (240) is extended by bending from the corner of the first winding member (210) to the other side of the winding section (200), and extends in the direction of the lower hole (102) so as to be directly connected to the core section (100). At this time, the bending is formed such that the point where the corners of the first direct connection member (230) on the other side of the winding section (200) (right side based on FIG. 2) are connected is formed as a curved surface.

[0044] Additionally, the first direct connection member (230) and the second direct connection member (240) are formed with a vertical length longer than that of the core part (100) to support the core part (100), so that a gap hole (202) can be formed between the lower surface of the core part (100) and the first direct connection member (230) and the second direct connection member (240).

[0045] Additionally, a supporting member (250) that supports the winding member (200) may be coupled to the lower portions of the first direct connection member (230) and the second direct connection member (240). This supporting member (250) may be formed as a flat plate.

[0046] Meanwhile, the winding section (200) may be HV. HV is generally used as an abbreviation for high voltage.

[0047] Next, the winding section (200) may have the properties of Cu, copper. And the external connection terminal may also have the same copper properties.

[0048] In addition, the main insulator of the bushing for the high-frequency transformer can be made of Epoxy+Air.

[0049] In addition, the other side of the winding portion (200) of the bushing for the high-frequency transformer has a round shape, so the electric field is not spread into the air layer as a whole, and the effect of reducing the air layer insulation distance and the mold shape can be achieved. Subsequently, since an electric field lower than the epoxy insulation and air insulation breakdown voltage is formed, insulation breakdown can be prevented.

[0050] The bushing portion (300) is coupled to one side of the winding portion (200) and has a bellows-like shape. Additionally, a placement groove (not shown) may be formed along the periphery of the bushing portion (300) so that the sealing portion (400) is placed therein. The placement groove may include a plurality of fixing protrusions (not shown) that protrude so that the sealing portion (400) is fixed from the placement groove.

[0051] The sealing portion (400) is positioned at the connection point between the winding portion (200) and the bushing portion (300). The sealing portion (400) may be detachable from the placement groove. As a result, if the sealing portion (400) is damaged, it can be easily replaced.

[0052] Additionally, the sealing portion (400) may be formed with a plurality of insertion grooves (not shown) that are formed to correspond to a plurality of fixing protrusions. That is, the sealing portion (400) can be further closely attached to the placement groove of the bushing portion (300) by the combination of the plurality of fixing protrusions and the insertion grooves.

[0053] Additionally, to prevent foreign substances from entering the placement groove, a portion of the sealing portion (400) may be separated from the placement groove and may cover a portion of the bushing portion (300).

[0054] Additionally, although the sealing part (400) is not illustrated, it may include a gripping part so that a worker can grip it to conveniently detach the sealing part (400) from the placement groove when replacing the sealing part (400). This gripping part may extend outward from the sealing part (400).

[0055] Additionally, the gripping portion may be made of the same material as the sealing portion (400) and may have a hole formed therein. This hole may be large enough for a worker's finger to pass through.

[0056] At this time, the sealing part (400) can be formed as a rounded square with reference to Figure 4, and the gripping part can be formed in each rounded part of the rounded square of the sealing part (400).

[0057] Next, the gripping portion extends outward from the sealing portion (400) in the opposite direction of the placement groove, rather than in the direction of the placement groove, from the rounded part of the rounded square of the sealing portion (400).

[0058]

[0059] The above description is merely an illustrative explanation of the technical concept of the present embodiment, and a person skilled in the art to which the present embodiment belongs would be able to make various modifications and variations within the scope of the essential characteristics of the present embodiment. Accordingly, the present embodiments are intended to explain, not limit, the technical concept of the present embodiment, and the scope of the technical concept of the present embodiment is not limited by these embodiments. The scope of protection of the present embodiment shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present embodiment.

Claims

1. A rectangular frame, with a core portion having a horizontal section formed in the center to form an upper hole and a lower hole; A winding portion that is coupled through the core portion above; A bushing part coupled to one side of the above-mentioned winding part and having a bellows-shaped exterior; and A bushing for a high-frequency transformer comprising a sealing portion disposed at the connection point between the above-mentioned winding portion and the above-mentioned bushing portion.

2. In Claim 1, The above winding part is, A first winding member penetrating the upper hole; and A bushing for a high-frequency transformer comprising a second winding member penetrating the lower hole.

3. In Claim 2, The first winding member and the second winding member are, A bushing for a high-frequency transformer, formed integrally, wherein a through hole is formed through which the horizontal portion passes.

4. In Claim 2, The above winding part is, A first direct connection member, one side of which is bent and extended from the corner of the first winding member and extends in the direction of the lower hole, and is directly connected to the core part; and A bushing for a high-frequency transformer, comprising a second direct connection member, the other end of which is curved and extended from the edge of the first winding member and extends in the direction of the lower hole, and is directly connected to the core part.

5. In Claim 3, The first direct connection member and the second direct connection member are, A bushing for a high-frequency transformer, formed with a vertical length longer than that of the core portion to support the core portion, and having a gap hole formed between the lower surface of the core portion and the first direct connection member and the second direct connection member.

6. In Claim 5, The above-mentioned first direct connection member is, A bushing for a high-frequency transformer to which the above bushing part is coupled.

7. In Claim 1, The above bushing part is, A bushing for a high-frequency transformer, having a placement groove formed therein for the above-mentioned sealing portion.

8. In Claim 7, The above placement groove is, A bushing for a high-frequency transformer comprising a plurality of fixing protrusions that protrude so as to be fixed from the above-mentioned sealing portion.

9. In claim 8, The above sealing part is, A bushing for a high-frequency transformer that is detachable from the above-mentioned placement groove.

10. In Claim 8, The above sealing part is, A bushing for a high-frequency transformer having a plurality of insertion grooves formed by being recessed to correspond to the plurality of fixed protrusions.

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