High-current transformer with anti-electromagnetic interference function

Abstract

The utility model discloses a high-current transformer with anti-electromagnetic interference, which relates to the technical field of power equipment and structurally comprises an induction iron core component which is annularly arranged. The shell component comprises two shells forming a first cavity, the two shells are spliced to form a second cavity, and the induction iron core component is arranged in the second cavity; wherein the induction iron core component comprises a body, a first connecting part arranged on the outer surface of the body and a first shielding shell surrounding the body, the first shielding shell is provided with a second connecting part, and the body and the first shielding shell are connected through the first connecting part and the second connecting part.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric power equipment, concretely is a large current mutual inductor with anti-electromagnetic interference. BACKGROUND

[0002] In the power system, as a kind of key measuring equipment, large current mutual inductor plays the important role of converting high current into low current for measuring instrument and protection device use. However, with the complexity of modern power system and the increasingly severe electromagnetic environment, large current mutual inductor faces more and more challenges in the operation process.

[0003] The existing large current mutual inductor is often focused on the accuracy and efficiency of current conversion in design, but the consideration of anti-electromagnetic interference is relatively less. This leads to the fact that in the strong electromagnetic field environment, such as lightning impact, high-frequency electromagnetic interference or electromagnetic noise generated by adjacent equipment, large current mutual inductor is easy to be disturbed, thereby generating measurement error, and even possibly causing misoperation or equipment failure. SUMMARY

[0004] The utility model aims at providing a large current mutual inductor with anti-electromagnetic interference to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A large current mutual inductor with anti-electromagnetic interference, comprising:

[0007] Induction core component, induction core component is arranged in ring shape;

[0008] Shell component, shell component includes two housings formed with first cavity, two housings are spliced to form second cavity, and induction core component is arranged in second cavity;

[0009] Wherein, induction core component includes body, first connecting part arranged on the outer surface of body and first shielding shell surrounding body, first shielding shell is arranged with second connecting part, and body and first shielding shell are connected through first connecting part and second connecting part.

[0010] Preferably, first shielding shell includes two semicircular annular sub-housing;

[0011] Second connecting part is the protruding piece arranged on the inner wall of sub-housing, and first connecting part is the limiting groove arranged on the outer surface of body;

[0012] Wherein, protruding piece and limiting groove are arranged in pairs, when body and first shielding shell are connected, protruding piece is inlaid in limiting groove.

[0013] Preferably, the two housings are arranged in a semi-circular ring shape, and the outer surface of the housing is provided with a groove member;

[0014] When the two housings are spliced, the two groove members form a circular ring-shaped ditch, and a limiting ring is arranged in the ditch to connect the two housings.

[0015] The limiting ring comprises a ring body provided with an opening portion, and the two ends of the opening portion of the ring body are respectively provided with a mounting hole.

[0016] Preferably, the shell member comprises a protective shell, and the inside of the protective shell is attached with a shielding shell.

[0017] The second cavity is formed in the shielding shell.

[0018] The edge position of the shielding shell is arranged in alignment with the protective shell.

[0019] Preferably, the base further comprises two L-shaped metal pieces, and the two metal pieces are welded to the outer surface of the shell member.

[0020] The utility model discloses a large current mutual inductor with anti-electromagnetic interference, has excellent anti-electromagnetic interference ability. Its structure includes two major parts of inductive core member and shell member. Inductive core member is arranged in annular form, is the core part of mutual inductor, and inductive core member is composed of body, first connecting portion and first shielding shell. The body is responsible for inductive current and produces corresponding magnetic field change;The first connecting portion is arranged on the outer surface of the body and is used for stably connecting with the first shielding shell;The first shielding shell is made of material with superior conductivity, and the body is wrapped to form an effective faraday cage, thereby isolating external electromagnetic interference, ensuring that the body is not affected by any external electromagnetic influence, and the shell member is composed of two housings. The two housings are spliced to form a closed second cavity, which provides a stable installation environment for the inductive core member. DRAWINGS

[0021] Figure 1 It is an embodiment of the pressure head angle cutting mechanism structure schematic view;

[0022] Figure 2 It is an embodiment of the first base plate structure schematic view;

[0023] Figure 3 It is an embodiment of the pressure applying assembly structure schematic view. DETAILED DESCRIPTION

[0024] The technical scheme of the patent will be further described in detail in combination with specific embodiments.

[0025] Embodiments of the present patent are described below in detail, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below are described by referring to the drawings, in which

[0026] The embodiments are exemplary only, and are used merely for the purpose of illustrating the present patent, and should not be construed as limiting the present patent.

[0027] In the description of the present patent, it should be understood that the terms "middle", "bottom", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "two sides" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present patent.

[0028] In the description of the present patent, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "assembling" should be understood broadly, for example, it can be fixedly connected, arranged, or detachably connected, arranged, or integrally connected, arranged. For those skilled in the art, the specific meaning of the above terms in the present patent can be understood according to the specific circumstances.

[0029] Please refer to FIG. 1 to FIG. 2, an embodiment discloses a large current transformer with anti-electromagnetic interference, comprising an induction core member 1, the induction core member 1 is arranged in a ring shape; a shell member 2, the shell member 2 comprises two housings formed with a first cavity 23, the two housings are spliced to form a second cavity, and the induction core member 1 is arranged in the second cavity; wherein the induction core member 1 comprises a body 11, a first connecting portion 12 arranged on the outer surface of the body 11, and a first shielding shell 13 surrounding the body 11, the first shielding shell 13 is arranged with a second connecting portion, and the body 11 and the first shielding shell 13 are connected through the first connecting portion 12 and the second connecting portion.

[0030] In the above embodiment, the induction core member 1 is installed in the second cavity of the shell member 2. When a large current flows, the body 11 senses the current and generates a corresponding magnetic field change. Due to the presence of the first shielding shell 13, external electromagnetic interference is effectively isolated and cannot affect the internal body 11. At the same time, the shell member 2 provides physical protection against external impacts and other influences on the performance of the transformer. The first shielding shell 13 is a metal shell that surrounds the body 11 and shields external electromagnetic interference. It is made of a material with good electrical conductivity and can form a Faraday cage to effectively isolate external electromagnetic interference and protect the internal induction core from interference. The first shielding shell 13 also has a second connecting part that matches the first connecting part 12 to ensure a stable connection between the shielding shell and the body. The two housings are designed to be detachable, forming a complete second cavity that is easy to assemble and maintain.

[0031] In one embodiment, the first shielding shell 13 includes two half-circular sub-housings; the second connecting part is a sub-housing 12

[0032] The protrusions are arranged on the inner wall, and the first connecting part 12 is a limiting groove arranged on the outer surface of the body 11; wherein the protrusions and the limiting grooves are arranged in pairs, and when the body 11 and the first shielding shell 13 are connected, the protrusions are embedded in the limiting grooves.

[0033] Specifically, the two half-circular sub-housings can surround the body 11 of the induction core member when combined, thereby forming a continuous electromagnetic shielding layer that effectively isolates external electromagnetic interference. The second connecting part is designed as protrusions, which are arranged on the inner wall of the sub-housing 12. The protrusions provide physical positioning and fixing points for the body 11 when connected, ensuring that the first shielding shell 13 can be stably installed on the body 11. The first connecting part 12 is a limiting groove arranged on the outer surface of the body 11, which matches the protrusions. When the body 11 and the first shielding shell 13 are connected, the protrusions can accurately embed into the limiting grooves, thereby achieving a tight connection between the two.

[0034] Please continue to refer to Figure 1. In one embodiment, the two housings are arranged in a half-circular ring shape, and the outer surface of the housing is arranged with a groove member; when the two housings are in the spliced state, the two groove members form a circular ring-shaped ditch, and a limiting ring 3 is arranged to embed in the ditch to connect the two housings; wherein the limiting ring 3 includes a ring body with an opening part, and the two ends of the opening part of the ring body are respectively arranged with an installation hole, and a bolt member is arranged to connect the two installation holes.

[0035] Specifically, when the two half-circular ring-shaped housings are in a spliced state, the respective groove members will be aligned to form a complete circular ring-shaped groove. This groove is designed very cleverly, and it provides a stable accommodating space for installing the limiting ring 3, which is arranged to be closely inlaid in this circular ring-shaped groove. When the limiting ring 3 is installed in place, it will tightly lock the two housings together, ensuring that there is no relative movement between them. This connection method can significantly improve the overall integrity and stability of the housing structure, and the limiting ring 3 itself also has certain structural characteristics. It includes a ring body with an opening arranged. The design of this opening may be to facilitate the installation and adjustment of the ring body opening. The two ends of the opening are respectively arranged with a mounting hole, and the two mounting holes are used to install a bolt member. Through the connection of the bolt member, the structural stability of the limiting ring 3 itself can be further ensured. In the installation process, the two housings are first spliced together to ensure that their groove members are aligned to form a circular ring-shaped groove. The limiting ring 3 is placed in this groove, and the two mounting holes are connected by the bolt member, thereby completing the entire installation process.

[0036] Please refer to Figure 3, in an embodiment, the shell member 2 includes a protective shell 21, and a shielding shell 22 is attached inside the protective shell 21;

[0037] A second cavity is formed in the shielding shell 22;

[0038] Among them, the edge position of the shielding shell 22 and the protective shell 21 is arranged in alignment.

[0039] In the above embodiment, the protective shell 21 is the external structure of the shell member 2, which provides physical protection to prevent external physical impact, dust, moisture and other adverse factors from damaging the internal inductive core member and other electronic components. The shielding shell 22 is a layer of metal shell attached inside the protective shell 21, which provides electromagnetic shielding to prevent external electromagnetic interference from affecting the internal electronic elements of the transformer. The shielding shell 22 is made of metal material with good electrical conductivity, such as copper or aluminum. The edge position of the shielding shell 22 and the protective shell 21 is arranged in alignment. This ensures that the two are closely attached without gaps, thereby preventing harmful substances or electromagnetic interference from the outside from penetrating into the inside through these gaps. At the same time, the edge alignment also enhances the stability and aesthetics of the overall structure.

[0040] Please continue to refer to Figure 1, in an embodiment also includes the base 4, the base includes two L-shaped metal pieces, two metal pieces are welded to the outer surface of the shell member 2, the base 4 and the shell member 2 closely combined to form a stable whole. The design of the L-shaped metal piece enables the base to effectively disperse the weight of the shell member 2 and the external load received to the mounting surface, thereby reducing the risk of single-point loading. At the same time, the base 4 also provides additional support, enhancing the impact resistance and vibration resistance of the shell member 2.

[0041] In summary, the utility model discloses a kind of large current transformers with anti-electromagnetic interference, with excellent anti-electromagnetic interference capability.Its structure includes two major parts of inductive core component and shell member.Inductive core component is arranged in annular form, is the core part of mutual inductor, and inductive core component is composed of body, first connecting part and first shielding shell.The body is responsible for inductive current and produces corresponding magnetic field change;First connecting part is arranged on the outer surface of the body, for stably connecting with first shielding shell;First shielding shell is made of material with superior conductivity, which wraps the body, forms an effective Faraday cage, thereby isolating external electromagnetic interference, ensuring that the body is not affected by any external electromagnetic influence, and the shell member is composed of two housings, which form a closed second cavity after splicing, providing a stable installation environment for the inductive core component.

[0042] The above is only the preferred embodiment of the utility model, it should be pointed out that, for those skilled in the art, without departing from the concept of the utility model, can make a number of deformation and improvement, these should also be considered as the protection scope of the utility model, these will not affect the effect and the practicality of the utility model implementation patent.

Claims

1. A large current transformer with anti-electromagnetic interference, characterized in that, The utility model relates to a kind of inductive core components, which are arranged in a ring shape. The shell member includes two housings formed with a first cavity, and the two housings are spliced to form a second cavity, and the inductive core member is arranged in the second cavity. The inductive core member includes a body, a first connecting portion arranged on the outer surface of the body, and a first shielding shell surrounding the body, the first shielding shell is arranged with a second connecting portion, and the body and the first shielding shell are connected by the first connecting portion and the second connecting portion. The first shielding shell includes two semi-circular sub-housings.

2. A large current transformer with anti-electromagnetic interference according to claim 1, characterized in that, The second connecting portion is a protruding piece arranged on the inner wall of the sub-housing, and the first connecting portion is a limiting groove arranged on the outer surface of the body. The protruding piece and the limiting groove are arranged in pairs, and when the body and the first shielding shell are connected, the protruding piece is embedded in the limiting groove. The two housings are arranged in a semi-circular shape, and the outer surface of the housing is arranged with a groove member.

3. A large current transformer with anti-electromagnetic interference according to claim 2, characterized in that, When the two housings are spliced, the two groove members form a circular ring-shaped groove, and a limiting ring is arranged to connect the two housings. The limiting ring includes a ring body with an opening portion, and the two ends of the opening portion are arranged with a mounting hole, and a bolt is arranged to connect the two mounting holes. The shell member includes a protective shell, and the inner surface of the protective shell is attached with a shielding shell.

4. A large current transformer with anti-electromagnetic interference according to claim 3, characterized in that, A second cavity is formed in the shielding shell. The shielding shell is arranged in alignment with the edge of the protective shell. The base includes two L-shaped metal pieces, and the two metal pieces are welded to the outer surface of the shell member.

5. A large current transformer with anti-electromagnetic interference according to claim 1, characterized in that, ​

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