Anti-interference three-phase transformer energy-saving iron core
By setting external shielding, isolation, and grounding mechanisms on the three-dimensional wound core, the problems of poor anti-interference ability and electromagnetic coupling of the winding are solved, achieving higher anti-interference ability and winding isolation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-03-06
AI Technical Summary
Existing three-dimensional wound iron cores have poor anti-interference capabilities, are easily affected by external magnetic fields, and have electromagnetic coupling problems in their internal windings.
The system employs an external shielding mechanism, an isolation shielding mechanism, a winding shielding mechanism, and a grounding mechanism. The iron core is encased in a shielding shell, the windings are separated by an isolation plate, and the windings are grounded through the grounding mechanism, forming a complete shielding system.
It improves the core's resistance to electromagnetic interference, prevents electromagnetic coupling between windings, isolates magnetic field interference generated by the windings, avoids magnetic field leakage, and maintains the stability of the core's performance.
Smart Images
Figure CN223977784U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of transformer cores, specifically to an anti-interference three-phase transformer energy-saving core. Background Technology
[0002] The transformer core is the core component of a transformer. Its main function is to serve as part of the magnetic circuit, efficiently conducting magnetic flux to achieve the conversion of electrical energy. The core is usually made of stacked silicon steel sheets with a high silicon content, and the surface is coated with insulating varnish to reduce eddy current losses. Its structure includes two parts: the core column and the yoke. The coil is wound on the core column, and the yoke connects the core column to form a closed magnetic circuit. The core not only supports the windings but also acts as a mechanical skeleton to maintain the stability of the transformer structure.
[0003] In addition to laminated silicon steel sheet cores, there is also a three-dimensional wound core. The magnetization direction of the three-dimensional wound core is completely consistent with the rolling direction of the silicon steel sheet. Under the premise of the same material, the wound core has lower losses and significant energy-saving effect compared with the laminated core. However, the existing three-dimensional wound core lacks electromagnetic interference protection, is easily affected by external magnetic field interference, and has electromagnetic coupling problems among multiple windings inside. Utility Model Content
[0004] This invention provides an energy-saving iron core for an anti-interference three-phase transformer, which has the advantages of resisting electromagnetic interference and preventing electromagnetic coupling between windings, thus solving the problem of poor anti-interference capability of existing vertically wound iron cores.
[0005] This utility model provides the following technical solution: an anti-interference three-phase transformer energy-saving iron core, including a base and a vertically wound iron core, wherein the vertically wound iron core includes multiple wound iron core bodies and yokes at the upper and lower ends of the wound iron core bodies, and also includes an external shielding mechanism, an isolation shielding mechanism, a winding shielding mechanism, and a grounding mechanism, wherein:
[0006] The external shielding mechanism includes a shielding shell fixed on the base and enclosing the vertically coiled iron core, and the shielding shell is provided with wiring holes;
[0007] The isolation and shielding mechanism includes multiple isolation plates that can be inserted into the shielding shell, and the isolation plates separate different coiled iron core bodies;
[0008] The winding shielding mechanism is located on the outside of the wound core body to isolate the wound core body from the winding.
[0009] The grounding mechanism is used for grounding the shielding shell, isolation plate and winding shielding mechanism.
[0010] As a preferred embodiment of this utility model, the yoke is fixed to the upper end of the base, the coiled iron core body is arranged in a triangular pattern and fixed between the yokes, and the shielding shell is a triangular elongated shell.
[0011] As a preferred technical solution of this utility model, the outer wall of the shielding shell is provided with a plurality of through slots, the isolation plate is movably connected to the slots, and the isolation plate is symmetrically equipped with handles.
[0012] As a preferred embodiment of this utility model, the outer wall of the shielding shell is equipped with a plurality of locking posts with screw holes, and the top of the isolation plate is equipped with locking ears with screw holes, and the locking ears and locking posts are connected by bolts.
[0013] As a preferred embodiment of this utility model, the grounding mechanism includes multiple grounding terminals, and the shielding shell is electrically connected to one grounding terminal via a wire.
[0014] As a preferred technical solution of this utility model, a shielding cylinder is fixed on the outer wall of the coiled iron core body, and the outer wall of the shielding cylinder is provided with evenly arranged winding grooves.
[0015] As a preferred technical solution of this utility model, the upper end of the base is equipped with a grounding plate and a grounding ring that are electrically connected to different grounding terminals inside the iron yoke. The grounding plate is electrically connected to the shielding cylinder through a wire. The grounding ring and the iron yoke are respectively provided with a connecting groove and a movable groove. The connecting groove and the movable groove are both movably connected to the isolation plate. The isolation plate contacts and is electrically connected to the grounding ring through the connecting groove.
[0016] Compared with the prior art, this utility model provides an anti-interference three-phase transformer energy-saving core, which has the following beneficial effects:
[0017] 1. This utility model can completely enclose the iron core through the external shielding shell, forming a closed shield that prevents external electromagnetic fields from entering the iron core area, thereby improving the iron core's anti-electromagnetic interference capability. Through the movable insertable isolation plate, multiple iron core windings can be separated into different areas to avoid electromagnetic coupling between different windings affecting the voltage, further improving the anti-interference capability.
[0018] 2. This utility model can isolate the magnetic field interference generated by the winding through the isolation cylinder, and at the same time prevent the magnetic field of the iron core from leaking to the outside, so as to avoid affecting the performance of the iron core. The winding can be conveniently wound through the winding groove outside the isolation cylinder. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the internal structure of this utility model;
[0021] Figure 3 This is a schematic diagram of the shielding shell structure of this utility model;
[0022] Figure 4 This is a cross-sectional view of the internal structure of the vertically coiled iron core of this utility model;
[0023] Figure 5 This utility model Figure 4 Enlarged view of area A in the middle.
[0024] In the diagram: 1. Base; 2. Outer shielding mechanism; 21. Shielding shell; 22. Locking post; 23. Slot; 24. Wiring hole; 3. Isolation shielding mechanism; 31. Isolation plate; 32. Handle; 33. Locking lug; 4. Winding shielding mechanism; 41. Shielding cylinder; 42. Winding groove; 5. Vertical coiled iron core; 51. Yoke; 511. Movable groove; 52. Coiled iron core body; 6. Grounding mechanism; 61. Grounding terminal; 62. Grounding ring; 621. Connecting groove; 63. Grounding plate. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1
[0026] Please refer to the appendix. Figure 1-5 The system includes a base 1 and a vertically wound iron core 5, wherein the vertically wound iron core 5 includes multiple wound iron core bodies 52 and yokes 51 at the upper and lower ends of the wound iron core bodies 52. The system is characterized by further including an outer shielding mechanism 2, an isolation shielding mechanism 3, a winding shielding mechanism 4, and a grounding mechanism 6, wherein:
[0027] The outer shielding mechanism 2 includes a shielding shell 21 fixed on the base 1 to wrap the vertically rolled iron core 5, and the shielding shell 21 is provided with a wiring hole 24;
[0028] The isolation and shielding mechanism 3 includes multiple isolation plates 31 that are movably inserted into the shielding shell 21, and the isolation plates 31 separate different coiled iron core bodies 52.
[0029] The winding shielding mechanism 4 is located on the outside of the wound core body 52 and is used to isolate the wound core body 52 from the winding.
[0030] The grounding mechanism 6 is used for grounding the shielding shell 21, the isolation plate 31 and the winding shielding mechanism 4.
[0031] Please refer to the appendix. Figure 1-3The iron yoke 51 is fixed to the upper end of the base 1, the coiled iron core body 52 is arranged in a triangle and fixed between the iron yoke 51, and the shielding shell 21 is a triangular long shell made of aluminum, which can effectively shield external magnetic fields.
[0032] Furthermore, the outer wall of the shielding shell 21 is provided with a plurality of through slots 23, the isolation plate 31 is movably connected to the slots 23, and the isolation plate 31 is symmetrically equipped with handles 32.
[0033] Specifically, this design allows the isolation plate 31 to be easily pulled out from the shielding shell 21, facilitating the maintenance and replacement of the isolation plate 31.
[0034] Furthermore, the outer wall of the shielding shell 21 is equipped with a plurality of locking posts 22 with screw holes, and the top of the isolation plate 31 is equipped with locking ears 33 with screw holes, and the locking ears 33 are connected to the locking posts 22 by bolts.
[0035] Specifically, the locking pins 22 and locking lugs 33 can be used to fix the position of the isolation plate 31 after it is installed, so as to prevent the isolation plate 31 from becoming loose or shifting.
[0036] Furthermore, the grounding mechanism 6 includes multiple grounding terminals 61. The shielding shell 21 is electrically connected to one grounding terminal 61 via a wire. The upper end of the base 1 is located inside the iron yoke 51 and is equipped with a grounding ring 62 that is electrically connected to one grounding terminal 61. The grounding ring 62 and the iron yoke 51 are respectively provided with a connecting groove 621 and a movable groove 511. Both the connecting groove 621 and the movable groove 511 are movably connected to the isolation plate 31. The isolation plate 31 contacts and is electrically connected to the grounding ring through the connecting groove 621.
[0037] In this embodiment, the shielding shell 21 is directly connected to the grounding terminal 61. After the isolation plate 31 is inserted and installed, it contacts the connecting groove 621 and is connected to the grounding plate 63. The grounding plate 63 is used as a transition to connect to the grounding terminal 61. After the grounding wire is connected through the grounding terminal 61, the shielding shell 21 and the isolation plate 31 are stably grounded. Example 2
[0038] Based on the above embodiment one, please refer to the appendix. Figure 4 Appendix Figure 5 The outer wall of the coiled iron core body 52 is fixed with a shielding cylinder 41. The outer wall of the shielding cylinder 41 is provided with evenly arranged winding grooves 42. The upper end of the base 1 is located inside the iron yoke 51 and is equipped with a grounding plate 63 that is electrically connected to a grounding terminal 61. The grounding plate 63 is electrically connected to the shielding cylinder 41 through a wire.
[0039] In this embodiment, the isolation cylinder can isolate the magnetic field interference generated by the winding and prevent the magnetic field of the iron core from leaking to the outside, thus avoiding affecting the performance of the iron core. The winding groove 42 outside the isolation cylinder can provide guidance during the winding process, which facilitates the installation of the winding.
[0040] The working principle and usage process of this utility model are as follows: After the coiled iron core body 52 is installed, the winding is installed on the coiled iron core body 52 through the winding groove 42 on the outer wall of the shielding cylinder 41. The shielding cylinder 41 is connected to the grounding plate 63 through the wire. Then, the shielding shell 21 is installed outside the coiled iron core body 52. The iron core winding is wired through the wiring hole 24 on the shielding shell 21. The shielding shell 21 is connected to the grounding terminal 61 through the wire. Then, the isolation plate 31 is inserted into the slot 23. The isolation plate 31 is inserted into the shielding shell 21 through the slot 23 to separate the different coiled iron core bodies 52. At the same time, the isolation plate 31 slides through the movable groove 511 and enters the connecting groove 621 to connect with the grounding ring 62. Then, the ground wire is connected through the grounding terminal 61.
[0041] During operation, the shielding shell 21 shields and protects the vertically wound iron core 5, preventing external magnetic fields from interfering with the vertically wound iron core 5. At the same time, the isolation plate 31 separates the different wound iron core bodies 52 and the windings installed on their surfaces into different areas, stabilizing the electromagnetic coupling between them. The isolation cylinder can isolate the magnetic field interference generated by the windings and prevent the magnetic field of the iron core from leaking to the outside, thus avoiding affecting the performance of the iron core.
Claims
1. An anti-interference three-phase transformer energy-saving core, comprising a base (1) and a vertical-wound core (5), the vertical-wound core (5) comprising a plurality of wound core bodies (52) and iron yokes (51) at the upper and lower ends of the wound core bodies (52), characterized in that, It also includes outer shielding mechanism (2), isolation shielding mechanism (3), winding shielding mechanism (4) and grounding mechanism (6), wherein: The outer shielding mechanism (2) includes shielding shell (21) fixed on the base (1) to wrap the vertical winding core (5), the shielding shell (21) is provided with a wiring hole (24); The isolation shielding mechanism (3) includes a plurality of isolation plates (31) movably inserted into the shielding shell (21), the isolation plates (31) separate different winding core bodies (52); The winding shielding mechanism (4) is arranged outside the winding core body (52) and is used for isolating the winding core body (52) and the winding; The grounding mechanism (6) is used for grounding the shielding shell (21), the isolation plate (31) and the winding shielding mechanism (4).
2. The anti-interference three-phase transformer energy-saving core according to claim 1, characterized in that: The iron yoke (51) is fixed on the upper end of the base (1), the winding core body (52) is arranged in a triangular shape and fixed between the iron yokes (51), and the shielding shell (21) is a triangular long shell.
3. The anti-interference three-phase transformer energy-saving core according to claim 2, characterized in that: The outer wall of the shielding shell (21) is provided with a plurality of through insertion slots (23), the isolation plates (31) are movably connected with the insertion slots (23), and the isolation plates (31) are symmetrically provided with handles (32).
4. The anti-interference three-phase transformer energy-saving core according to claim 3, characterized in that: The outer wall of the shielding shell (21) is provided with a plurality of locking piles (22) with screw holes, the top of the isolation plate (31) is provided with a locking lug (33) with a screw hole, and the locking lug (33) and the locking pile (22) are connected by bolts.
5. The anti-interference three-phase transformer energy-saving core according to claim 4, characterized in that: The grounding mechanism (6) includes a plurality of grounding terminals (61), and the shielding shell (21) is electrically connected with one grounding terminal (61) through a wire.
6. The anti-interference three-phase transformer energy-saving core according to claim 5, characterized in that: The outer wall of the winding core body (52) is fixed with a shielding cylinder (41), and the outer wall of the shielding cylinder (41) is provided with uniformly arranged winding grooves (42).
7. The anti-interference three-phase transformer energy-saving core according to claim 6, characterized in that: The upper end of the base (1) is provided with a grounding disc (63) and a grounding ring (62) electrically connected with different grounding terminals (61) inside the iron yoke (51), the grounding disc (63) is electrically connected with the shielding cylinder (41) through a wire, and the grounding ring (62) and the iron yoke (51) are respectively provided with a connecting groove (621) and a movable groove (511), the connecting groove (621) and the movable groove (511) are movably connected with the isolation plate (31), and the isolation plate (31) is in contact with and electrically connected with the grounding ring through the connecting groove (621).