Three-phase three-dimensional transformer iron core and resonance elimination device thereof

Abstract

The utility model discloses a three-phase three-dimensional transformer iron core and a resonance elimination device thereof, the resonance elimination device comprises a triangular block arranged in a central through hole of an upper iron yoke and / or a lower iron yoke of the three-phase three-dimensional transformer iron core, the triangular block is formed by overlapping a plurality of iron sheets from top to bottom, and the shape of each iron sheet is matched with that of the central through hole; the three corners of the triangular block are respectively provided with a conductive rod from top to bottom, and after the three conductive rods are connected in series or in parallel, the two poles of the three conductive rods are electrically connected with the two ends of a load or an energy storage battery respectively. And the conductive rod is insulated from the triangular block. Due to the adoption of the technical scheme, compared with the prior art, the magnetic eddy current generated by the three-phase three-dimensional transformer iron core under the condition of unbalanced three-phase load can be eliminated, so that the transformer iron core is prevented from heating and generating harmonic waves. And on the other hand, the generated electric energy can be provided for a load for use or stored through an energy storage battery, so that the electric energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a three-phase stereo transformer iron core and a detuning device thereof. Background Art

[0002] The three-phase stereo transformer is an energy-saving power transformer that creatively reforms the magnetic circuit structure and three-phase layout of traditional power transformers, making the product performance more optimized, such as complete symmetry of the three-phase magnetic circuit, significant power saving effect, greatly reduced noise, stronger heat dissipation and overload capacity, compact structure and small size, etc.

[0003] However, when the three-phase load is unbalanced, the core of the existing three-phase transformer generates eddy currents, which causes the transformer core to heat up and generates harmonics. Therefore, it is urgent to develop a detuning device for the core of the three-phase transformer that can eliminate such harmonics. Summary of the Invention

[0004] The utility model provides a three-phase stereo transformer core and a detuning device thereof to solve the technical problem that the existing three-phase stereo transformer core generates eddy currents when the three-phase load is unbalanced, thereby causing the transformer core to heat up and generate harmonics.

[0005] In order to achieve the above-mentioned purpose, the present utility model adopts the following technical solutions.

[0006] On the one hand, a detuning device for a three-phase transformer core is provided, comprising a triangular block mounted within a central through-hole of an upper and / or lower iron yoke of the three-phase transformer core. The triangular block is formed by stacking a plurality of iron sheets whose shapes match the central through-holes from top to bottom. A conductive rod is provided at each of the three corners of the triangular block, from top to bottom. After the three conductive rods are connected in series or in parallel, the two poles are electrically connected to the two ends of a load or an energy storage battery, respectively. The conductive rod is insulated from the triangular block.

[0007] In some embodiments, the three conductive rods include a first conductive rod, a second conductive rod, and a third conductive rod; a through hole is provided at the center of the triangular block from top to bottom; the lower end of the first conductive rod bypasses the bottom of the triangular block and the through hole and is electrically connected to the upper end of the second conductive rod, the lower end of the second conductive rod bypasses the bottom of the triangular block and the through hole and is electrically connected to the upper end of the third conductive rod; the lower end of the third conductive rod bypasses the bottom of the triangular block, is led upward from the through hole, and is electrically connected to one end of a load or an energy storage battery, and the other end of the load or the energy storage battery is electrically connected to the upper end of the first conductive rod.

[0008] In some embodiments, a conductive column is provided at the center of the triangular block from top to bottom, and the conductive column is insulated from the triangular block; a first insulating sheet is provided at one end of the triangular block, and a first conductive sheet is provided on the outside of the first insulating sheet; a second insulating sheet is provided at the other end of the triangular block, and a second conductive sheet is provided on the outside of the second insulating sheet; the first conductive sheet is electrically connected to the three conductive rods and insulated from the first end of the conductive column, and the second conductive sheet is electrically connected to the three conductive rods and the second end of the conductive column; the first end of the conductive column is electrically connected to one end of the load or energy storage battery, and the other end of the load or energy storage battery is electrically connected to one of the conductive rods.

[0009] On the other hand, a three-phase three-dimensional transformer core is provided, comprising a core column and an iron yoke, wherein the iron yoke comprises an upper iron yoke and a lower iron yoke; the above-mentioned detuning device is installed in the central through hole of the upper and / or lower iron yoke.

[0010] The present invention has at least the following technical effects or advantages: the detuning device can eliminate the eddy currents generated by the core of a three-phase transformer when the three-phase load is unbalanced, thereby preventing heating of the transformer core and the generation of harmonics. Furthermore, the generated electrical energy can be supplied to the load or stored in a storage battery, thereby saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of a detuning device for a three-phase transformer core in one embodiment of the present invention;

[0012] Figure 2 This is a schematic structural diagram of a conductive rod in one embodiment of the present utility model;

[0013] Figure 3 This is a schematic structural diagram of a detuning device for a three-phase transformer core in one embodiment of the present invention;

[0014] Figure 4 This is a schematic structural diagram of a conductive rod in one embodiment of the present utility model;

[0015] Figure 5 This is a schematic structural diagram of the iron core of a three-phase stereo transformer in one embodiment of the present invention. DETAILED DESCRIPTION

[0016] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Example 1

[0018] See also Figure 1 、 Figure 2 and Figure 5A detuning device 1 for a three-phase transformer core can be installed in the central through hole 21 of the upper and / or lower iron yoke of the three-phase transformer core 2. The detuning device 1 includes a triangular block, which is composed of a plurality of iron sheets 3 whose shapes match the central through hole 21 and are stacked from top to bottom. The height of the triangular block is consistent with the height of the iron yoke. In essence, the shape of the iron sheet 3 is an equilateral triangle with three sides bent inward. A conductive rod is provided at each of the three corners of the triangular block from top to bottom. After the three conductive rods are connected in series, the two poles are electrically connected to the load or the two ends of the energy storage battery. The conductive rod is insulated from the triangular block.

[0019] Specifically, the three conductive rods include a first conductive rod 41, a second conductive rod 42, and a third conductive rod 43. A through hole 5 is provided at the center of the triangular block from top to bottom. The lower end of the first conductive rod 41 passes around the bottom of the triangular block and through hole 5, electrically connecting to the upper end of the second conductive rod 42. The lower end of the second conductive rod 42 passes around the bottom of the triangular block and through hole 5, electrically connecting to the upper end of the third conductive rod 43. The lower end of the third conductive rod 43 passes around the bottom of the triangular block and extends upward through through hole 5 to form a first electrode 61, which is electrically connected to one end of a load or energy storage battery. The upper end of the first conductive rod 41 forms a second electrode 62, electrically connecting to the other end of the load or energy storage battery.

[0020] Example 2

[0021] See also Figure 3-Figure 5 A detuning device 1 for a three-phase transformer core can be installed in the central through hole 21 of the upper and / or lower iron yoke of the three-phase transformer core 2. The detuning device 1 includes a triangular block, which is composed of a plurality of iron sheets 3 whose shapes match the central through hole and are stacked from top to bottom. The height of the triangular block is consistent with the height of the iron yoke. In essence, the shape of the iron sheet 3 is an equilateral triangle with three sides bent inward. A conductive rod 4 is provided at each of the three corners of the triangular block from top to bottom. After the three conductive rods 4 are connected in parallel, the two poles are electrically connected to the load or the two ends of the energy storage battery. The conductive rod 4 is insulated from the triangular block.

[0022] Specifically, a conductive column 7 is provided from top to bottom at the center of the triangular block, and the conductive column 7 is insulated from the triangular block. A first insulating sheet 81 is provided at one end of the triangular block, and a first conductive sheet 91 is provided on the outside of the first insulating sheet 81. A second insulating sheet 82 is provided at the other end of the triangular block, and a second conductive sheet 92 is provided on the outside of the second insulating sheet 82. The first conductive sheet 91 is electrically connected to the three conductive rods 4 and is insulated from the first end of the conductive column 7 (a hole is provided in the middle of the first conductive sheet 91, and the conductive column 7 passes through the hole without contacting the first conductive sheet 91, thereby being insulated from it). The second conductive sheet 92 is electrically connected to the three conductive rods 4 and the second end of the conductive column 7. The first end of the conductive column 7 forms a first electrode 61, which is electrically connected to one end of the load or energy storage battery. One of the conductive rods forms a second electrode 62, which is electrically connected to the other end of the load or energy storage battery.

[0023] Example 3

[0024] like Figure 5 As shown, a three-phase three-dimensional transformer core includes a core column 22 and an iron yoke 23. The iron yoke 23 includes an upper iron yoke and a lower iron yoke. The above-mentioned detuning device 1 is installed in the central through hole 21 of the upper and / or lower iron yoke.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A detuning device for a three-phase transformer core, comprising a triangular block mounted within a central through-hole in an upper and / or lower iron yoke of the three-phase transformer core, wherein the triangular block is formed by stacking multiple iron sheets having a shape matching the central through-hole from top to bottom; characterized in that: A conductive rod is provided at each of the three corners of the triangular block from top to bottom. After the three conductive rods are connected in series or in parallel, the two poles are electrically connected to the load or the two ends of the energy storage battery respectively; the conductive rod is insulated from the triangular block.

2. The detuning device for a three-phase transformer core according to claim 1, characterized in that: The three conductive rods include a first conductive rod, a second conductive rod, and a third conductive rod; a through hole is provided at the center of the triangular block from top to bottom; the lower end of the first conductive rod bypasses the bottom of the triangular block and the through hole and is electrically connected to the upper end of the second conductive rod, the lower end of the second conductive rod bypasses the bottom of the triangular block and the through hole and is electrically connected to the upper end of the third conductive rod; the lower end of the third conductive rod bypasses the bottom of the triangular block, is led upward from the through hole, and is electrically connected to one end of a load or an energy storage battery, and the other end of the load or the energy storage battery is electrically connected to the upper end of the first conductive rod.

3. The detuning device for a three-phase transformer core according to claim 1, characterized in that: A conductive column is provided at the center of the triangular block from top to bottom, and the conductive column is insulated from the triangular block; a first insulating sheet is provided at one end of the triangular block, and a first conductive sheet is provided on the outer side of the first insulating sheet; a second insulating sheet is provided at the other end of the triangular block, and a second conductive sheet is provided on the outer side of the second insulating sheet; the first conductive sheet is electrically connected to the three conductive rods and insulated from the first end of the conductive column, and the second conductive sheet is electrically connected to the three conductive rods and the second end of the conductive column; the first end of the conductive column is electrically connected to one end of a load or an energy storage battery, and the other end of the load or the energy storage battery is electrically connected to one of the conductive rods.

4. A three-phase transformer core, comprising a core column and a yoke, wherein the yoke comprises an upper yoke and a lower yoke; characterized in that: The detuning device according to any one of claims 1 to 3 is installed in the central through hole of the upper and / or lower iron yoke.

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