一种柔性电流互感器
By using a structural design that combines a limiting baffle with a stepped surface and a sawtooth meshing, the problems of magnetic gap and magnetic flux leakage in flexible current transformers when the machining accuracy is insufficient are solved, achieving efficient signal transmission and mechanical durability, and meeting the requirements of standard current output.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGYIN SPARK ELECTRONICS TECH
- Filing Date
- 2025-07-09
- Publication Date
- 2026-07-17
AI Technical Summary
When the processing precision of existing flexible current transformers is insufficient, the iron core end faces are difficult to fit tightly, resulting in leakage of magnetic gap and magnetic flux, which affects magnetic permeability and signal transmission efficiency, and makes it difficult to output standard 5A signal current.
The structure adopts a limiting baffle and stepped surface cooperation structure, combined with sawtooth surface meshing and fastening screw connection, to enhance the contact area and fixing strength of the iron core end, reduce magnetic gap and magnetic loss, and improve magnetic permeability and mechanical durability.
It effectively reduces magnetic gap and magnetic flux leakage, improves magnetic permeability and signal stability, enhances the mechanical durability of the iron core, ensures the stability and measurement accuracy of the secondary side output current, and solves the problem of magnetic performance degradation in traditional processes.
Smart Images
Figure CN224519670U_ABST
Abstract
Claims
1. A flexible current transformer, characterized by Includes a flexible iron core (1), on which a coil winding (2) is wound. Both ends of the flexible iron core (1) are provided with iron core joint ends. A limiting baffle (3) is provided on the side of one side of the iron core joint end. The limiting baffle (3) forms a lateral limiting on the other end of the iron core and increases the contact area between the two iron core ends.
2. A flexible current transformer according to claim 1, characterized in that The iron core connection end is formed at both ends of the flexible iron core (1), namely the first end (4) and the second end (5); the wide side of the first end (4) is provided with a stepped surface (6) extending along the axial direction, and the narrow side of the first end (4) is provided with a limiting baffle (3), so that the limiting baffle (3) is vertically set on one side of the stepped surface (6). The second end (5) is provided with an L-shaped concave step (7), the wide side of the L-shaped concave step (7) is matched with the step surface (6), and the narrow side is matched with the limiting baffle (3).
3. A flexible current transformer according to claim 2, characterised in that, The iron core connecting ends are provided with fastening holes. The fastening holes are set as threaded holes (9) on the stepped surface (6). The fastening holes form through holes (8) on the L-shaped concave step (7). It also includes fastening screws (10). The fastening screws (10) pass through the through holes (8) and are screwed into the threaded holes (9).
4. A flexible current transformer according to claim 1, characterized in that The cross-sectional area of the flexible iron core (1) is not less than 1 / 5 of the area of the cross-section of the current transformer.
5. A flexible current transformer according to claim 2, characterised in that, A first serrated surface (11) with concave and convex arrangement is formed on the step surface (6), and a second serrated surface (12) is provided on the wide side of the L-shaped concave step (7). The serrations on the first serrated surface (11) and the second serrated surface (12) are arranged along the width direction of the flexible iron core (1), and the first serrated surface (11) and the second serrated surface (12) are meshed with each other.
6. A flexible current transformer according to claim 2, characterized in that The first end (4) extends to the opposite side of the step surface (6) to form a third side surface (13), such that the third side surface (13) and the step surface (6) are clamped together with respect to the second end (5).
7. A flexible current transformer according to claim 6, characterised in that, The third side (13) is fixedly connected to the narrow side, and the step surface (6) and the third side (13) are provided with a serrated surface on at least one side.
8. A flexible current transformer according to claim 6, characterized in that A partition slit (14) is provided between the third side (13) and the narrow side, so that the third side (13) has a bending deformation allowance. At least one side of the step surface (6) and the third side (13) is provided with a first ratchet surface (15), and the second end (5) is provided with a corresponding second ratchet surface on the side corresponding to it.