CN219642654U - Magnetic leakage compensation device for converter transformer - Google Patents
Magnetic leakage compensation device for converter transformer Download PDFInfo
- Publication number
- CN219642654U CN219642654U CN202320662823.5U CN202320662823U CN219642654U CN 219642654 U CN219642654 U CN 219642654U CN 202320662823 U CN202320662823 U CN 202320662823U CN 219642654 U CN219642654 U CN 219642654U
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- Prior art keywords
- pulling plate
- copper bar
- core column
- column
- compensation device
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 61
- 229910052802 copper Inorganic materials 0.000 claims abstract description 61
- 239000010949 copper Substances 0.000 claims abstract description 61
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000005389 magnetism Effects 0.000 claims description 10
- 239000002184 metal Substances 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 238000013021 overheating Methods 0.000 abstract description 7
- 230000004907 flux Effects 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 239000000725 suspension Substances 0.000 abstract description 3
- 238000013016 damping Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Regulation Of General Use Transformers (AREA)
Abstract
The utility model discloses a magnetic flux leakage compensation device for a converter transformer, which comprises the following components: a pulling plate assembly and a copper bar assembly; the pull plate assembly comprises a core column pull plate arranged on one side of the transformer core column and a side column pull plate arranged on a side column of the transformer, and the copper bar assembly comprises an upper copper bar and a lower copper bar; the side column pulling plate and the core column pulling plate are arranged parallel to the axis of the iron core column, the top end of the side column pulling plate and the top end of the core column pulling plate are fixed on the upper copper bar, and the bottom end of the side column pulling plate and the bottom end of the core column pulling plate are fixed on the lower copper bar. According to the utility model, the pull plate assembly is arranged near the iron core column of the transformer, so that a circulation loop can be provided for a through-window current generated by leakage of the voltage regulating lead, and vortex generated in a suspension pull belt with a smaller cross section area is avoided, so that overheating of an edge area is avoided; the eddy current loss in the internal metal structural part of the converter transformer is reduced, and local overheating in the metal structural part is avoided.
Description
Technical Field
The utility model relates to the field of transformers, in particular to a magnetic leakage compensation device for a converter transformer.
Background
The current of the small-capacity transformer caused by magnetic leakage is very small, and the short circuit ring formed by the upper clamping piece, the lower clamping piece, the side yoke and the core column pulling plate can not generate local overheating due to the magnetic leakage. However, the voltage regulating range of the converter transformer is large, the number of voltage regulating leads is more than that of the alternating current transformer, and the magnetic field generated by the voltage regulating leads is much larger. According to the electromagnetic induction principle, alternating magnetic flux generated by current in a converter transformer voltage regulating lead passes through an iron core window, eddy currents are easily generated on certain metal structural members, so that local eddy current loss density is overlarge, local overheating is generated, and the safe operation of a product is influenced.
In the prior art, the converter transformer generally performs magnetic leakage shielding only through some magnetic shielding assemblies, such as a magnetic shielding plate, but more magnetic leakage still exists only through the magnetic shielding plate, and more eddy current loss exists.
Disclosure of Invention
The utility model overcomes the defects of large magnetic leakage and large eddy current loss of the converter transformer in the prior art, and provides a magnetic leakage compensation device for the converter transformer, which adopts the following technical scheme: a leakage compensation device for a converter transformer, comprising: a pulling plate assembly and a copper bar assembly;
the pull plate assembly comprises a core column pull plate arranged on one side of the transformer core column and a side column pull plate arranged on a side column of the transformer, and the copper bar assembly comprises an upper copper bar and a lower copper bar;
the side column pulling plate and the core column pulling plate are arranged parallel to the axis of the iron core column, the top end of the side column pulling plate and the top end of the core column pulling plate are fixed on the upper copper bar, and the bottom end of the side column pulling plate and the bottom end of the core column pulling plate are fixed on the lower copper bar.
In a preferred embodiment of the present utility model, the upper copper bar is provided with a plurality of support rubber pads, and at least two support rubber pads are arranged between two adjacent pull plates.
In a preferred embodiment of the utility model, the upper copper bar is provided with a first magnetism isolating slot with an upward opening, and the lower copper bar is provided with a second magnetism isolating slot with an upward opening.
In a preferred embodiment of the present utility model, the length of the first magnetic isolation slot is equal to the length of the second magnetic isolation slot, and the length of the first magnetic isolation slot is greater than the distance between two side posts of the transformer.
In a preferred embodiment of the present utility model, the stem pulling plate includes at least two pulling plate members arranged in parallel, and two adjacent pulling plate members are insulated from each other.
In a preferred embodiment of the present utility model, the stem pulling plate and the side stem pulling plate are connected to the upper copper bar and the lower copper bar through an L-shaped copper plate.
In a preferred embodiment of the present utility model, the pulling plate assembly is insulated from the upper clamping member and the lower clamping member of the transformer.
The utility model solves the defects existing in the background technology, and has the following beneficial effects:
in the utility model, a magnetic leakage compensation device is additionally arranged in the converter transformer on the basis of the technology of maintaining the existing magnetic shielding assembly. The pull plate assembly is arranged near the iron core column of the transformer, so that a through-window current generated by voltage-regulating lead leakage flux can provide a circulation loop, and vortex generated in a suspension pull belt with smaller sectional area is avoided, and overheating of an edge area is avoided. The upper side column, the lower side column and the core column pulling plate are connected through copper bar leads, so that the side column and the core column pulling plate form a short circuit ring along each iron core window to inhibit magnetic leakage. The magnetic flux leakage compensation structure disclosed by the utility model can reduce eddy current loss in the metal structural part in the converter transformer and avoid local overheating in the metal structural part; the damping rubber pad is used at the middle support part of the copper bar lead wire, so that the effects of damping the copper bar and preventing looseness in installation are achieved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other embodiments of the drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a leakage compensation device for a converter transformer according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a leakage compensation device for a converter transformer according to an embodiment of the present utility model.
The reference numerals are as follows: 101-a first side column; 102-a second side column; 201-a first leg; 202-a second leg; 301-upper clamping piece; 302-lower clip; 401-stem pulling plate; 402-side column tie plates; 403-upper copper bars; 404-rubber pad; 405-magnetism isolating groove; 406-lower copper bars; 407-L copper plate.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and detailed description thereof, which are simplified schematic drawings which illustrate only the basic structure of the utility model and therefore show only those features which are relevant to the utility model, it being noted that embodiments of the utility model and features of the embodiments may be combined with each other without conflict.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may include one or more of the feature, either explicitly or implicitly. In the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The utility model discloses a magnetic flux leakage compensation device for a converter transformer, which mainly comprises a pulling plate assembly and a copper bar assembly.
As shown in fig. 1, in particular, the pull plate assembly mainly includes a stem pull plate 401 and a side stem pull plate 402. The stem pulling plate 401 includes a first stem pulling plate and a second stem pulling plate, and the side stem pulling plate 402 includes a first side stem pulling plate and a second side stem pulling plate, which are sequentially arranged in parallel. The transformer in this embodiment mainly includes two core legs and two side legs, which correspond to the first side leg 101, the first core leg 201, the second core leg 202, and the second side leg 102 in order. One side of the core leg is provided with a leg pull plate 401, one side of the side leg is provided with a side leg pull plate 402, and the two leg pull plates 401 and the two side leg pull plates 402 are located on the same side.
Referring to fig. 2, the two connection copper bars include an upper copper bar 403 located at an upper portion of the core limb and a lower copper bar 406 located at a lower portion of the core limb.
As shown in fig. 2, the side column tie plate 402 is fixed at one end to the upper copper bar 403 and at the other end to the lower copper bar 406. One end of the stem plate 401 is fixed to the upper copper bar 403 and the other end is fixed to the lower copper bar 406. The side column pulling plate 402 and the core column pulling plate 401 are fixed with the copper bars through the L-shaped copper plates 407.
The upper copper bar 403 and the lower copper bar 406 are respectively provided with a plurality of support rubber pads 404, at least two support rubber pads 404 are arranged between two adjacent pull plates, and the support rubber pads 404 are arranged at the middle support part of the copper bar lead, so that oil resistance and heat resistance can be increased, and meanwhile, the flexible damping effect is realized.
On the premise that the copper bars meet the current carrying requirement, the upper copper bar 403 and the lower copper bar 406 are respectively provided with a magnetism isolating groove 405 with an upward opening, the magnetism isolating grooves 405 are arranged in the middle of the copper bars, and the length of the magnetism isolating grooves 405 is greater than the distance between the two side columns. The magnetic isolation groove 405 is arranged in the middle of the copper bar, so that the eddy current loss in the copper bar is reduced, the density of the eddy current loss is reduced, and the hot spot temperature of the copper bar is reduced.
Referring to fig. 2, the stem pulling plate 401 includes at least two pulling plate members arranged in parallel, and in this embodiment, the stem pulling plate 401 has three pulling plate members, and the three pulling plate members are insulated from each other.
The column pulling plate 401 and the column pulling plate 402 are insulated from the upper clamping piece 301 and the lower clamping piece 302, the three pulling plate pieces of the column pulling plate 401 are insulated from each other, and the column pulling plate 402 and the upper portion and the lower portion of the column pulling plate 401 are respectively shorted through the upper copper bar 403 and the lower copper bar 406, so that a loop is formed.
According to the utility model, on the basis of the technology of maintaining the existing magnetic shielding assembly, the leakage compensation device is additionally arranged in the converter transformer, so that a circulation loop can be provided for the window penetrating current generated by leakage of the voltage regulating lead. Avoiding the generation of vortex in the suspension drawstring with smaller cross section area and causing overheat in the edge area. The upper side column, the lower side column and the core column pulling plate are connected through copper bar leads, so that the side column and the core column pulling plate 401 form a short circuit ring along each iron core window to inhibit magnetic leakage. The magnetic flux leakage compensation structure disclosed by the utility model can reduce eddy current loss in the metal structural part in the converter transformer and avoid local overheating in the metal structural part; the damping rubber pad 404 is used at the middle support part of the copper bar lead wire, so that the effects of damping the copper bar and preventing looseness in installation are achieved.
The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (7)
1. A leakage compensation device for a converter transformer, comprising: a pulling plate assembly and a copper bar assembly;
the pull plate assembly comprises a core column pull plate arranged on one side of the transformer core column and a side column pull plate arranged on a side column of the transformer, and the copper bar assembly comprises an upper copper bar and a lower copper bar;
the side column pulling plate and the core column pulling plate are arranged parallel to the axis of the iron core column, the top end of the side column pulling plate and the top end of the core column pulling plate are fixed on the upper copper bar, and the bottom end of the side column pulling plate and the bottom end of the core column pulling plate are fixed on the lower copper bar.
2. A leakage compensation device for a converter transformer according to claim 1, characterized in that: the upper copper bar is provided with a plurality of supporting rubber mats, and at least two supporting rubber mats are arranged between two adjacent pull plates.
3. A leakage compensation device for a converter transformer according to claim 1, characterized in that: the upper copper bar is provided with a first magnetism isolating groove with an upward opening, and the lower copper bar is provided with a second magnetism isolating groove with an upward opening.
4. A leakage compensation device for a converter transformer according to claim 3, characterized in that: the length of the first magnetism isolating slot is equal to that of the second magnetism isolating slot, and the length of the first magnetism isolating slot is larger than the distance between two side posts of the transformer.
5. A leakage compensation device for a converter transformer according to claim 1, characterized in that: the stem pulling plate comprises at least two pulling plate pieces which are arranged in parallel, and the two adjacent pulling plate pieces are mutually insulated.
6. A leakage compensation device for a converter transformer according to claim 1, characterized in that: the core column pulling plate and the side column pulling plate are connected with the upper copper bar and the lower copper bar through L-shaped copper plates.
7. A leakage compensation device for a converter transformer according to claim 1, characterized in that: the pulling plate assembly is mutually insulated from the upper clamping piece and the lower clamping piece of the transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320662823.5U CN219642654U (en) | 2023-03-30 | 2023-03-30 | Magnetic leakage compensation device for converter transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320662823.5U CN219642654U (en) | 2023-03-30 | 2023-03-30 | Magnetic leakage compensation device for converter transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219642654U true CN219642654U (en) | 2023-09-05 |
Family
ID=87811020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320662823.5U Active CN219642654U (en) | 2023-03-30 | 2023-03-30 | Magnetic leakage compensation device for converter transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219642654U (en) |
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2023
- 2023-03-30 CN CN202320662823.5U patent/CN219642654U/en active Active
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