Electromagnetic interference resistant current transformer

Abstract

The utility model discloses an electromagnetic interference resistant current transformer relates to the technical field of mutual inductor. Including current transformer body, the two horizontal relative positions of surface are respectively set up with the position of placing gap, protection subassembly is installed in the position of current transformer body surface close to the placing gap, is used for laying the insulation surrounding of signal line in the protection current transformer body at the axial periphery of current transformer body, protection subassembly includes: spool structure, installs in any one position in the two placing gaps of current transformer body surface, protection insulation soft area, assembly is in the periphery of spool structure, is used for the adhesion surrounding in the periphery of current transformer body and forms insulation surrounding, and the end of protection insulation soft area is assembled in the surface of spool structure or any one placing gap in the current transformer body after surrounding the periphery of current transformer body. The utility model discloses through.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, specifically to an electromagnetic interference-resistant current transformer. Background Technology

[0002] Electromagnetic interference-resistant current transformers are important devices that can effectively reduce interference and ensure the accuracy of current measurement in complex electromagnetic environments.

[0003] A search revealed that Chinese utility model patent application with publication number "CN219716647U" proposes "a high-current transformer with anti-electromagnetic interference". By rotating the rotating shell on the surface of the rotating column, it causes the cover at one end of the connecting rod to seal one end of the high-current transformer body. Furthermore, the second tension spring pulls the movable block to fix the position of the cover, thus achieving the advantage of effectively resisting electromagnetic interference.

[0004] However, in actual use, the aforementioned devices and similar devices have increased assembly difficulty and failure risk due to the mechanical transmission components (such as rotating shell, moving block, and second tension spring). During long-term use, the tension spring is prone to tension decay due to metal fatigue, resulting in poor sealing of the cover. Utility Model Content

[0005] The purpose of this invention is to provide an electromagnetic interference resistant current transformer to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] Electromagnetic interference resistant current transformers include:

[0008] The current transformer body has placement notches at two opposite lateral positions on its surface.

[0009] The protective component is installed on the surface of the current transformer body near the placement notch, and is used to lay an insulating surround on the axial periphery of the current transformer body to protect the signal lines inside the current transformer body.

[0010] The protective components include:

[0011] The reel structure is installed at either of the two placement notches on the surface of the current transformer body.

[0012] The protective insulating tape is assembled around the outer periphery of the reel structure to fit and surround the body of the current transformer and form an insulating enclosure. The end of the protective insulating tape is fitted and assembled on the surface of the reel structure or at any placement notch inside the body of the current transformer after wrapping around the outer periphery of the current transformer.

[0013] Furthermore, the reel structure includes:

[0014] A mounting seat, which is fitted at a position of the current transformer body close to the placement notch;

[0015] A storage reel, which is rotatably connected in the mounting seat and is used for winding and releasing a protective insulating soft belt. The protective insulating soft belt is wound around the periphery of the storage reel;

[0016] A stress rod, which is installed at one end outside the mounting seat. The rod body of the stress rod penetrates through the mounting seat and is fixed to one end of the storage reel.

[0017] Furthermore, a magnetic adsorption patch board is fixed at the end of the protective insulating soft belt. The two sides in the axial direction of the magnetic adsorption patch board are respectively used for magnetic adsorption on the surface of the mounting seat or at any one of the placement notches in the current transformer body.

[0018] Furthermore, a limit cap is fixed at one end of the stress rod away from the storage reel. A return spring is fixed between the limit cap and the mounting seat. The return spring is sleeved outside the stress rod.

[0019] Furthermore, fitting plates are respectively fixed on both sides of the bottom end outside the current transformer body. The two fitting plates jointly form a seat body. The protective insulating soft belt can pass through the seat body and be laid on the axial periphery of the current transformer body.

[0020] Furthermore, the width of the protective insulating soft belt matches the axial height of the current transformer body. The protective insulating soft belt is wound on the surface of the storage reel in a non-expanded state. The magnetic adsorption patch board fixed at the end of the protective insulating soft belt is magnetically attracted to the metal magnetism on the surface of the mounting seat and at the placement notch, forming a stable closure.

[0021] Furthermore, the placement notch presents a "U" - shaped structure in the current transformer body. The opening direction of the "U" - shaped structure faces the outside of the current transformer body and is used for the storage operation of the protective insulating soft belt.

[0022] Compared with the prior art, the beneficial effects of the present utility model are:

[0023] For this anti - electromagnetic interference current transformer, through the simplified design of the reel structure and the protective insulating soft belt, the assembly complexity and potential failure hazards brought by traditional mechanical transmission components are effectively eliminated, thus significantly improving the reliability and installation efficiency of the equipment;

[0024] In addition, the protective insulating soft belt is quickly fitted and fixed through the magnetic adsorption patch board, avoiding the sealing failure caused by the attenuation of the tension of the pull spring. The cooperation of the return spring and the limit cap ensures the automatic reset of the reel structure, further simplifying the operation process;

[0025] Meanwhile, the placement notch of the "凵" - shaped structure optimizes the storage space of the protective insulating soft tape, enabling the entire device to maintain stable insulation surrounding performance during long - term use and significantly reducing the impact of electromagnetic interference on current measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Is an isometric view of the present utility model;

[0027] Figure 2 Is Figure 1 The partial enlarged view of part A in

[0028] Figure 3 Is the structural composition diagram of the protection component of the present utility model.

[0029] In the figure: 1, the base body; 2, the placement notch; 3, the current transformer body; 4, the protection component; 401, the protective insulating soft tape; 402, the mounting base; 403, the storage reel; 404, the magnetic sticker board; 405, the stress rod; 406, the return spring. SPECIFIC EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0031] Refer to Figures 1 to 3 As shown, this application proposes a design of a current transformer with anti - electromagnetic interference, aiming to effectively shield external electromagnetic interference and ensure the stability and accuracy of signal transmission.

[0032] It should be noted that the current transformer with anti - electromagnetic interference mainly includes the following components: the current transformer body 3, on the surface of which symmetric placement notches 2 are respectively opened at the transverse relative positions, and these notches facilitate the installation and operation of the protection component 4; the protection component 4 is installed at a position on the surface of the current transformer body 3 close to the placement notch 2, and is used to lay a continuous insulating enclosure around the axial periphery of the current transformer body 3, thereby protecting the internal signal line from the influence of electromagnetic interference.

[0033] It is worth noting that the protective component 4 in this application specifically includes: a reel structure, which is installed at any one of the two placement notches 2 on the surface of the current transformer body 3 to achieve flexible deployment; and a protective insulating soft strip 401, which is assembled around the periphery of the reel structure and can fit snugly and tightly around the periphery of the current transformer body 3 to form a complete insulating enclosure layer. After the end of the protective insulating soft strip 401 has been wrapped around the current transformer body 3, it can be fitted and assembled at any one of the placement notches 2 on the surface of the reel structure or inside the current transformer body 3 to ensure the firmness of the enclosure.

[0034] It should be added that, in this application, the reel structure is further subdivided into: a mounting base 402, which is fitted and fixed to the current transformer body 3 near the placement notch 2 to provide a stable support base; a storage reel 403, which is installed in the mounting base 402 by a rotatable connection for efficient winding and releasing of the protective insulating soft tape 401, the protective insulating soft tape 401 being stored in a wound manner around the storage reel 403; and a force-bearing rod 405, which is installed at one end outside the mounting base 402, its rod body passing through the mounting base 402 and fixedly connected to one end of the storage reel 403, the user can control the rotation of the reel by operating the force-bearing rod 405.

[0035] It should also be noted that in this application, the end of the protective insulating soft strip 401 is fixed with a magnetic suction plate 404. The magnetic suction plate 404 has magnetic suction function on both sides in the axial direction, and can be firmly magnetically attached to the metal part of any placement notch 2 on the surface of the mounting base 402 or inside the current transformer body 3, so as to achieve quick closing and disassembly. It should be added that a limit cap is fixed to the end of the force rod 405 away from the storage roll 403. A return spring 406 is fixed between the limit cap and the mounting base 402. The return spring 406 is sleeved on the outside of the force rod 405. After the protective insulating soft strip 401 is released, it automatically helps the roll return to its position to ensure the compact storage of the protective component 4.

[0036] As a preferred embodiment, in this embodiment, metal bonding plates are fixed on both sides of the bottom of the current transformer body 3. These two metal bonding plates together form the base 1. The base 1 not only provides overall support stability, but also has a channel designed to allow the protective insulating soft strip 401 to pass through and be laid on the axial periphery of the current transformer body 3, optimizing the continuity of the insulation enclosure. In addition, it should be noted that the width of the protective insulating soft strip 401 is precisely matched with the axial height of the current transformer body 3 to ensure full coverage without gaps. It is worth noting that in the non-unfolded state, the protective insulating soft strip 401 is completely rolled up on the surface of the storage roll 403 for easy storage. The magnetic adhesive plate 404 fixed at the end of the protective insulating soft strip 401 forms a strong adsorption with the metal magnetism of the mounting base 402 surface and the placement notch 2, achieving a stable closure and preventing loosening.

[0037] It should be further noted that, in this application, the notch 2 is placed in a standard "U" shape within the current transformer body 3. The opening of this "U" shape clearly faces the outside of the current transformer body 3, facilitating the quick insertion, removal, and storage of the protective insulating tape 401, thus improving maintenance efficiency. The overall design emphasizes practicality and reliability, effectively isolating electromagnetic interference through insulation.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. An electromagnetic interference-resistant current transformer, characterized in that, Including: The current transformer body (3), with placement gaps (2) respectively opened at two horizontally opposite positions on the surface; The protection component (4), installed at a position on the surface of the current transformer body (3) close to the placement gap (2), for laying an insulating enclosure for protecting the signal wire inside the current transformer body (3) around the axial periphery of the current transformer body (3); The protection component (4) includes: A reel structure, installed at any one of the two placement gaps (2) on the surface of the current transformer body (3); A protective insulating soft tape (401), assembled around the periphery of the reel structure, for fittingly surrounding the periphery of the current transformer body (3) to form an insulating enclosure. The end of the protective insulating soft tape (401) is fitted and assembled on the surface of the reel structure or at any one of the placement gaps (2) inside the current transformer body (3) after surrounding the periphery of the current transformer body (3).

2. The electromagnetic interference suppressor current transformer according to claim 1, characterized in that: The reel structure includes: A mounting seat (402), fittingly attached to the position of the current transformer body (3) close to the placement gap (2); A storage reel (403), rotatably connected inside the mounting seat (402), for winding and releasing the protective insulating soft tape (401). The protective insulating soft tape (401) is wound around the periphery of the storage reel (403); A force-bearing rod (405), installed at one end outside the mounting seat (402), and the rod body of the force-bearing rod (405) penetrates through the mounting seat (402) and is fixed to one end of the storage reel (403).

3. The electromagnetic interference-resistant current transformer according to claim 2, characterized in that: A magnetic adsorption plate (404) is fixed to the end of the protective insulating soft tape (401). The two sides in the axial direction of the magnetic adsorption plate (404) are respectively used for magnetic adsorption on the surface of the mounting seat (402) or at any one of the placement gaps (2) inside the current transformer body (3).

4. The electromagnetic interference-resistant current transformer according to claim 2, characterized in that: A limiting cap is fixed to the end of the force-bearing rod (405) away from the storage reel (403). A return spring (406) is fixed between the limiting cap and the mounting seat (402), and the return spring (406) is sleeved outside the force-bearing rod (405).

5. The electromagnetic interference suppressor current transformer according to claim 1, characterized in that: Fitting plates are respectively fixed to both sides of the outer bottom end of the current transformer body (3). The two fitting plates together form a seat body (1), and the protective insulating soft tape (401) can pass through the seat body (1) and be laid around the axial periphery of the current transformer body (3).

6. The electromagnetic interference suppressor current transformer according to claim 3, characterized in that: The width of the protective insulating soft tape (401) matches the axial height of the current transformer body (3). The protective insulating soft tape (401) is wound on the surface of the storage reel (403) in a non-expanded state. The magnetic adsorption plate (404) fixed to the end of the protective insulating soft tape (401) is magnetically attracted to the metal magnetism at the surface of the mounting seat (402) and the placement gap (2) to form a stable closure.

7. The electromagnetic interference suppressor current transformer according to claim 1, characterized in that: The placement gap (2) presents a "U" - shaped structure inside the current transformer body (3). The opening direction of the "U" - shaped structure faces the outside of the current transformer body (3), for the storage operation of the protective insulating soft tape (401).

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