Mutual inductor structure

Abstract

The utility model discloses a mutual inductor structure which comprises a mutual inductor body, a battery cell is arranged in an inner cavity of the mutual inductor body, first insulation paper is wound on the surface of the battery cell, the first insulation paper covers the surface of the battery cell, a primary wire is wound on the surface of the first insulation paper, and a secondary wire is wound on the surface of the primary wire. The primary wire is a paper-wrapped flat copper wire, a gauze layer is wound on the surface of the battery cell, and the gauze layer is located on the inner side of the first insulation paper and covers the surface of the battery cell. According to the mutual inductor structure, the primary wire is changed into the paper-wrapped flat copper wire from the glass fiber-wrapped flat copper wire, stripping is easy, the processing flow is simplified, the operation difficulty and the potential safety hazard of stripping are reduced, the high-purity paper-wrapped flat copper wire is good in conductivity, the loss in the current transmission process can be reduced, and the efficiency of the mutual inductor is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mutual inductor, concretely to a mutual inductor structure. BACKGROUND

[0002] Current transformer is a kind of special transformer, is used in current measurement and protection in power system. It can be converted into smaller current according to proportion, usually 5 ampere (A) or 1 ampere (A) of standard, to facilitate the use of measurement, control and protection equipment.

[0003] The working principle of current transformer is based on electromagnetic induction principle. When there is current in the primary side (i.e. high current side) conductor, magnetic flux is generated in the core, and this magnetic flux induces the electromotive force of secondary side (i.e. low current side), thereby generating current in secondary winding. Since the secondary side of current transformer is usually connected to measuring instrument or protection device, this current can be used to represent the current size of primary side, but the existing primary multi-turn current transformer adopts glass silk wrapped flat copper wire, which leads to more impurities contained in copper wire, and the peeling operation is complex, and the fiber material is easy to hurt human skin. SUMMARY

[0004] In view of the defects of the prior art, the utility model provides a mutual inductor structure, which solves the problems of the existing primary multi-turn current transformer adopting glass silk wrapped flat copper wire, leading to more impurities contained in copper wire, and the peeling operation is complex, and the fiber material is easy to hurt human skin.

[0005] To achieve the above purpose, the utility model realizes the following technical scheme: a mutual inductor structure, comprising a mutual inductor body, an inner cavity of the mutual inductor body is provided with an electric core, a surface of the electric core is wound with a first insulating paper, the surface of the first insulating paper covers the surface of the electric core, a primary conductor is wound on the surface of the first insulating paper, and the primary conductor is paper wrapped flat copper wire.

[0006] Further, the surface of the electric core is wound with a gauze layer, the gauze layer is located on the inner side of the first insulating paper, and covers the surface of the electric core.

[0007] Further, the surface of the primary conductor is wound with a second insulating paper.

[0008] Further, the both ends of the primary conductor are welded with a stake head, and the stake head extends to the outside of the mutual inductor body.

[0009] Further, the bottom of the mutual inductor body is fixedly connected with a mounting sheet, and a plurality of openings are formed in the surface of the mounting sheet.

[0010] Compared with the prior art, the beneficial effects of the utility model are that the primary wire is changed from glass silk wrapped flat copper wire to paper wrapped flat copper wire, which is easy to peel, simplifies the processing flow, reduces the operation difficulty and the safety hazard of peeling, and the high-purity paper wrapped flat copper wire has good conductivity, which can reduce the loss in the current transmission process and improve the efficiency of the mutual inductor. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is a front structure schematic view of the utility model;

[0012] Fig. 2 It is a structure schematic view of the electric core and the primary wire in the utility model;

[0013] Fig. 3 It is a structure schematic view of the mutual inductor body and the mounting sheet in the utility model.

[0014] In the drawing: 1, mutual inductor body; 2, electric core; 3, gauze layer; 4, first insulating paper; 5, primary wire; 6, second insulating paper; 7, pile head; 8, mounting sheet; 9, opening. DETAILED DESCRIPTION

[0015] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0016] Please refer to Figs. 1-3 The utility model provides a kind of technical scheme: a mutual inductor structure, including mutual inductor body 1, the inner cavity of mutual inductor body 1 is provided with electric core 2, the surface of electric core 2 is wound and is provided with first insulating paper 4, first insulating paper 4 covers the surface of electric core 2, the surface of first insulating paper 4 is wound and is provided with primary wire 5, and primary wire 5 is paper wrapped flat copper wire.

[0017] Primary wire 5 is changed from glass silk wrapped flat copper wire to paper wrapped flat copper wire, which is easy to peel, simplifies the processing flow, reduces the operation difficulty and the safety hazard of peeling, and the high-purity paper wrapped flat copper wire has good conductivity, which can reduce the loss in the current transmission process and improve the efficiency of the mutual inductor.

[0018] The surface of electric core 2 is wound and is provided with gauze layer 3, and gauze layer 3 is located in the inner side of first insulating paper 4 and covers the surface of electric core 2.

[0019] Gauze layer 3 can prevent current leakage and electrical failure, and can protect electric core 2 from external environment, such as humidity, dirt, etc., so as to prolong the service life of electric core 2.

[0020] The surface of the primary conductor 5 is wound with the second insulating paper 6.

[0021] The second insulating paper 6 provides electrical insulation, prevents current leakage and short circuit in the transformer, has high resistivity, can effectively block the current, and ensures the safe operation of the transformer in a high-voltage environment.

[0022] The primary conductor 5 is welded with a pile head 7 at both ends, and the pile head 7 extends to the outside of the transformer body 1.

[0023] The bottom of the transformer body 1 is fixedly connected with a mounting sheet 8, and the surface of the mounting sheet 8 is provided with a plurality of openings 9, and the mounting sheet 8 can be fixed by the openings 9, and then the transformer body 1 is fixedly installed and used.

[0024] In work, the primary conductor 5 is changed from a glass silk wrapped flat copper wire to a paper wrapped flat copper wire, which is easy to peel off, simplifies the processing flow, reduces the operation difficulty and the safety hazard of peeling, and the high-purity paper wrapped flat copper wire has good conductivity, which can reduce the loss in the current transmission process and improve the efficiency of the transformer.

[0025] It should be noted that the relational terms herein such as first and second and the like are used only to differentiate one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between or among the entities or operations. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0026] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A transformer structure comprising a transformer body (1), characterized by: The inner cavity of the mutual inductor body (1) is provided with an electric core (2), the surface of the electric core (2) is wound with a first insulating paper (4), the first insulating paper (4) covers the surface of the electric core (2), the surface of the first insulating paper (4) is wound with a primary wire (5), and the primary wire (5) is a paper-wrapped flat copper wire.

2. A transformer structure according to claim 1, characterised in that: The surface of the electric core (2) is wound with a gauze layer (3), the gauze layer (3) is located inside the first insulating paper (4) and covers the surface of the electric core (2).

3. A transformer structure according to claim 1, characterised in that: The surface of the primary wire (5) is wound with a second insulating paper (6).

4. A transformer structure according to claim 1, characterised in that: Both ends of the primary wire (5) are welded with a stud (7), and the stud (7) extends to the outside of the mutual inductor body (1).

5. A transformer structure according to claim 1, characterized in that: The bottom of the mutual inductor body (1) is fixedly connected with a mounting sheet (8), and the surface of the mounting sheet (8) is provided with a plurality of openings (9).

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