Primary single-turn current transformer

Abstract

The utility model discloses a primary single-turn current transformer which comprises a current transformer body, a battery cell structure is arranged in the current transformer body, a winding is arranged on the surface of the battery cell structure, the battery cell structure comprises an iron core, an insulating layer and an integrated bent copper bar matched with the iron core, and the insulating layer is arranged on the surface of the iron core. The insulating layer wraps and covers the surface of the iron core, and the integrated bent copper bar is arranged on the outer surface of the insulating layer. According to the one-time single-turn current transformer, the integrated bent copper bar is used for replacing a plurality of soft copper strips to be combined and welded, so that the production process can be remarkably simplified, a complicated combining and welding process is not needed, the production difficulty and working hours of the current transformer are reduced, and the integral structure of the integrated bent copper bar ensures good conductive continuity; and the overall structure reduces the welding material and labor cost, so that the production cost of the current transformer is reduced.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, specifically a single-turn current transformer. Background Technology

[0002] A single-turn current transformer is a current transformer that can measure current by passing only one wire through the primary side. Its structure is relatively simple, containing only one coil (i.e., a single turn), and it converts high current into low current through the principle of electromagnetic induction to facilitate measurement, protection, and control.

[0003] When the primary conductor passes through the current transformer, the current in the conductor generates a magnetic field. This magnetic field induces an electromotive force on the secondary side of the current transformer, thereby enabling current measurement. However, in existing single-turn current transformers, the primary conductive material is mostly made by welding multiple 1 mm thick soft copper strips together, which is a complex process and prone to single-strip cold solder joints. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a single-turn current transformer, which solves the problem that most existing single-turn current transformers use multiple 1 mm thick soft copper strips welded together, resulting in complex processing and the tendency for single strips to have poor solder joints.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a single-turn current transformer, comprising a current transformer body, wherein a cell structure is disposed inside the current transformer body, and a winding is disposed on the surface of the cell structure;

[0006] The battery cell structure includes an iron core, an insulating layer, and an integrally bent copper busbar adapted to the iron core. The insulating layer wraps around and covers the surface of the iron core, and the integrally bent copper busbar is disposed on the outer surface of the insulating layer.

[0007] Furthermore, all four corners of the integrated bent copper busbar are rounded.

[0008] Furthermore, a connector is fixedly connected to the bottom of the current transformer body, and the bottom of the connector has several mounting holes.

[0009] Furthermore, the top and bottom of the front side of the current transformer body are fixedly connected to fixing blocks, and bolts are provided on the fixing blocks, with insulating pressure blocks fixedly connected to the inner ends of the bolts.

[0010] Furthermore, a torsion block is fixedly connected to the outer end of the bolt, and the surface of the torsion block is provided with anti-slip texture.

[0011] Compared with existing technologies, the beneficial effects of this utility model are that by using an integrated bent copper busbar instead of multiple soft copper strips welded together, the production process can be significantly simplified, eliminating the need for complex merging and welding processes, reducing the production difficulty and time of current transformers. The integrated bent copper busbar's overall structure ensures good conductivity continuity, and the overall structure reduces welding materials and labor costs, thereby reducing the production cost of current transformers. It also has better conductivity performance because its overall structure reduces resistance and inductance, improving current transmission efficiency and ensuring that the transformer can accurately measure current values ​​during operation, improving measurement accuracy. Furthermore, the integrated bent copper busbar's structure is more robust and durable, able to withstand greater current surges and mechanical stress, extending the service life of the transformer. Attached Figure Description

[0012] Figure 1 This is a front structural diagram of the present invention;

[0013] Figure 2 This is a schematic diagram of the structure of the iron core and the bent copper busbar of this utility model;

[0014] Figure 3 This is a schematic diagram of the connecting seat and mounting hole of this utility model.

[0015] In the diagram: 1. Current transformer body; 2. Cell structure; 3. Iron core; 4. Insulation layer; 5. Integrated bent copper busbar; 6. Connecting seat; 7. Mounting hole; 8. Fixing block; 9. Bolt; 10. Insulation pressure block; 11. Twist block. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-3 This utility model provides a technical solution: a single-turn current transformer, including a current transformer body 1, a cell structure 2 is provided inside the current transformer body 1, and a winding is provided on the surface of the cell structure 2.

[0018] The cell structure 2 includes an iron core 3, an insulating layer 4, and an integrally bent copper busbar 5 adapted to the iron core 3.

[0019] The insulation layer 4 is wrapped around the surface of the iron core 3, and the integrated bent copper busbar 5 is set on the outer surface of the insulation layer 4. All four corners of the integrated bent copper busbar 5 are rounded.

[0020] Using an integrated bent copper busbar 5 instead of multiple soft copper strips welded together can significantly simplify the production process, eliminating the need for complex merging and welding processes, reducing the production difficulty and time of current transformers, and ensuring good conductivity continuity due to its overall structure.

[0021] The overall structure reduces welding materials and labor costs, thereby lowering the production cost of current transformers. It also has better conductivity because its overall structure reduces resistance and inductance, improves current transmission efficiency, and ensures that the transformer can accurately measure current values ​​during operation, thus improving measurement accuracy.

[0022] The integrated bent copper busbar 5 has a more robust and durable structure, capable of withstanding greater current surges and mechanical stress, thus extending the service life of the transformer.

[0023] A connector 6 is fixedly connected to the bottom of the current transformer body 1, and several mounting holes 7 are provided on the bottom of the connector 6.

[0024] The top and bottom of the front side of the current transformer body 1 are fixedly connected to fixing blocks 8, and bolts 9 are provided on the fixing blocks 8. An insulating pressure block 10 is fixedly connected to the inner end of the bolts 9.

[0025] The outer end of the bolt 9 is fixedly connected to a torsion block 11, and the surface of the torsion block 11 is provided with anti-slip texture.

[0026] After the product passes through the interior of the current transformer body 1, the toggle block 11 can be twisted, and the insulating pressure block 10 will come into contact with the product through the bolt 9, thus fixing the product.

[0027] During operation, using an integrated bent copper busbar 5 instead of multiple soft copper strips welded together can significantly simplify the production process. It eliminates the need for complex merging and welding, reducing the production difficulty and time required for current transformers. The integrated bent copper busbar 5's overall structure ensures good conductivity continuity, and the overall structure reduces welding materials and labor costs, thereby lowering the production cost of current transformers. It also has better conductivity performance because its overall structure reduces resistance and inductance, improving current transmission efficiency and ensuring accurate current measurement during operation, thus improving measurement accuracy.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A single-turn current transformer, comprising a current transformer body (1), characterized in that: The current transformer body (1) is provided with a cell structure (2) inside, and the surface of the cell structure (2) is provided with windings; The battery cell structure (2) includes an iron core (3), an insulating layer (4), and an integral bent copper busbar (5) adapted to the iron core (3). The insulating layer (4) covers the surface of the iron core (3), and the integral bent copper busbar (5) is disposed on the outer surface of the insulating layer (4).

2. A single-turn current transformer according to claim 1, characterized in that: The four corners of the integrated bent copper busbar (5) are all rounded.

3. A single-turn current transformer according to claim 1, characterized in that: The bottom of the current transformer body (1) is fixedly connected to a connecting seat (6), and the bottom of the connecting seat (6) is provided with several mounting holes (7).

4. A single-turn current transformer according to claim 1, characterized in that: The top and bottom of the front side of the current transformer body (1) are fixedly connected to a fixing block (8), and a bolt (9) is provided on the fixing block (8). An insulating pressure block (10) is fixedly connected to the inner end of the bolt (9).

5. A single-turn current transformer according to claim 4, characterized in that: The outer end of the bolt (9) is fixedly connected to a torsion block (11), and the surface of the torsion block (11) is provided with anti-slip texture.

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