Grounding structure of mutual inductor

Abstract

The utility model relates to the technical field of mutual inductors, in particular to a grounding structure of a mutual inductor, which comprises a mutual inductor body, a bottom plate is fixedly arranged at the lower end of the mutual inductor body, a grounding block is arranged on the upper end face of the bottom plate, the grounding block is vertically and fixedly arranged on the upper end face of the bottom plate, and a positioning pipe is arranged on the outer side face of the grounding block. The positioning tube and the grounding block are integrally formed, and a connecting plug group is installed in the positioning tube. According to the utility model, the positioning pipe is arranged on the grounding block of the mutual inductor, so that the connecting plug group can be conveniently mounted through the positioning pipe when the mutual inductor needs to be used, and the conductive ring frame can be conveniently and stably mounted on the connecting plug group through the arrangement of the connecting plug group; therefore, when the conductive ring frame is installed in the positioning tube through the connecting plug group, the conductive ring frame can be contacted with the vertical plate of the grounding block for conduction, and the connecting end of the conductive ring frame and the vertical plate can be arranged in the positioning tube.

Description

Technical Field

[0001] The utility model relates to the technical field of mutual inductors, in particular to a grounding structure of a mutual inductor. Background Art

[0002] The instrument transformer is a common electrical device that completes the conversion of current and voltage to ensure the safety of electrical equipment. The instrument transformer needs to be connected to the ground wire during use. In order to avoid disassembling the instrument transformer when connecting the ground wire, a grounding structure is usually set on the outside of the instrument transformer.

[0003] A Chinese patent application, publication number CN207425603U, discloses a grounding structure for a transformer and a transformer. The transformer grounding structure includes a mounting base and a grounding block adapted to connect to the transformer. The mounting base is provided with a positioning structure, and the grounding block is provided with threaded holes corresponding to the positioning structure. The mounting base and grounding block are fixedly connected by threaded fasteners.

[0004] Regarding the above-mentioned related technologies, it is found that the grounding structure used in the existing transformer does not have a corresponding protective structure. The connection end is easily exposed to the air for a long time due to oxidation, which may cause loose connection and other problems, thereby affecting the stability and safety of the transformer grounding. Utility Model Content

[0005] The utility model solves the problems in the related art and proposes a grounding structure for a mutual inductor.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] A grounding structure of a transformer includes a transformer body, a base plate fixedly mounted at the lower end of the transformer body, a grounding block provided on the upper end surface of the base plate, the grounding block vertically fixedly mounted on the upper end surface of the base plate, a positioning tube provided on the outer surface of the grounding block, the positioning tube and the grounding block integrally formed, a connecting plug group installed in the positioning tube, the connecting plug group being threadedly fixed to the grounding block, and a conductive ring frame being sleeved on the connecting plug group.

[0008] As a preferred solution, the grounding block includes a base and a vertical plate, the vertical plate is arranged on the upper end surface of the base, and the vertical plate and the base are formed in one piece.

[0009] As a preferred solution, a threaded hole for installing the connecting plug group is opened on the vertical plate, and the threaded hole is connected to the positioning tube.

[0010] As a preferred solution, the connecting plug assembly includes a sealing block and a screw portion, wherein the screw portion is arranged at one end of the sealing block and is fixedly connected to the sealing block.

[0011] As a preferred solution, a shielding cover is fixedly mounted on the outer end of the sealing block, and an operating panel is further provided on the outer side surface of the shielding cover. The operating panel and the shielding cover are integrally formed.

[0012] As a preferred solution, the conductive ring frame includes a metal ring and a grounding wire. The metal ring is sleeved on the screw portion. One end of the grounding wire is welded and fixed to the metal ring, and the other end passes through the connecting plug group and extends to the outside.

[0013] As a preferred solution, the sealing block and the shielding cover are provided with wire holes for the grounding wire to pass through, and a positioning groove is provided on the inner side of the sealing block, and a limiting strip corresponding to the positioning groove is integrally formed on the metal ring.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention arranges a positioning tube on the grounding block of the transformer, so that the connecting plug group can be installed through the positioning tube when needed, and the arrangement of the connecting plug group facilitates the stably installation of the conductive ring frame in the connecting plug group. In this way, after the conductive ring frame is installed in the positioning tube through the connecting plug group, it can contact and conduct electricity with the vertical plate of the grounding block, thereby ensuring that the connecting ends of the two can be arranged in the positioning tube, and the positioning tube can be further sealed and shielded by the arrangement of the sealing block and the shielding cover, thereby ensuring the stable connection of the connecting end and increasing the safety of the equipment grounding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a three-dimensional diagram of the grounding block and the positioning tube of the utility model in coordination;

[0017] Figure 3 It is a three-dimensional diagram of the connecting plug assembly of the utility model;

[0018] Figure 4 yes Figure 3 a right side view of the device shown;

[0019] Figure 5 It is a structural schematic diagram of the conductive ring frame of the utility model.

[0020] In the figure: 1. Transformer body; 2. Bottom plate; 3. Grounding block; 31. Base; 32. Vertical plate; 321. Threaded hole; 4. Positioning tube; 5. Connecting plug group; 51. Sealing block; 511. Shielding cover; 512. Operating panel; 513. Wire hole; 514. Positioning groove; 52. Screw part; 6. Conductive ring frame; 61. Metal ring; 611. Limiting strip; 62. Grounding wire. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way serves as any limitation on the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​described in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0024] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0025] For ease of description, spatially relative terms such as "above," "on the upper surface of," "on top of," etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, the device described as "above" or "on top of" other devices or structures will be subsequently positioned as "below" or "below" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0026] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0027] Reference Figure 1 、 Figure 2 and Figure 3 As shown, a grounding structure for a transformer includes a transformer body 1, a base plate 2 fixedly mounted at the lower end of the transformer body 1, a grounding block 3 provided on the upper end surface of the base plate 2, the grounding block 3 being vertically fixedly mounted on the upper end surface of the base plate 2, a positioning tube 4 provided on the outer surface of the grounding block 3, the positioning tube 4 being integrally formed with the grounding block 3, a connecting plug group 5 being installed in the positioning tube 4, the connecting plug group 5 being threadedly fixed to the grounding block 3, and a conductive ring frame 6 being sleeved on the connecting plug group 5. The grounding block 3 is provided on the upper end surface of the base plate 2 of the transformer body 1 to facilitate grounding. At the same time, the positioning tube 4 is fixedly mounted on the upper end of the grounding block 3. During use, the connecting plug group 5 can be installed through the positioning tube 4. Thus, when the conductive ring frame 6 is sleeved on the connecting plug group 5, it can be stably installed in the positioning tube 4 through the connecting plug group 5. Thus, the connection between the conductive ring frame 6 and the grounding block 3 is disposed in the positioning tube 4, reducing the exposure of the connection end to the air.

[0028] Reference Figure 2As shown, the grounding block 3 includes a base 31 and a vertical plate 32. The vertical plate 32 is arranged on the upper end surface of the base 31, and the vertical plate 32 and the base 31 are integrally formed. The setting of the grounding block 3 ensures that the vertical plate 32 can be installed through the base 31 when in use, and ensures that the vertical plate 32 and the base 31 can be used in conjunction with the bottom plate 2 for electrical conduction when in use. The vertical plate 32 is provided with a threaded hole 321 for the installation of the connecting plug group 5, and the threaded hole 321 is connected to the positioning tube 4. By providing the threaded hole 321 on the vertical plate 32, the connecting plug group 5 can be stably installed, and the threaded connection between the two can not only ensure the stability of the connection, but also facilitate disassembly, maintenance or replacement operations in the future.

[0029] Reference Figure 3 and Figure 4 As shown, the connecting plug assembly 5 includes a sealing block 51 and a screw portion 52. The screw portion 52 is disposed at one end of the sealing block 51 and is fixedly connected to the sealing block 51. The structural configuration of the connecting plug assembly 5 ensures that the sealing block 51 can be installed in the threaded hole 321 of the vertical plate 32 via the screw portion 52 during use, thereby ensuring that the sealing block 51 can be stably installed in the positioning tube 4. In this way, the sealing block 51 can shield the conductive ring frame 6, thereby preventing the conductive ring frame 6 from being exposed to air for a long time and increasing the stability of the connection. A shielding cover 511 is fixedly mounted on the outer end of the sealing block 51. An operating panel 512 is also disposed on the outer surface of the shielding cover 511. The operating panel 512 is integrally formed with the shielding cover 511. The shielding cover 511 further shields the positioning tube 4, and the operating panel 512 ensures that the operator can more easily perform the rotation operation when installing or removing the connecting plug assembly 5.

[0030] Reference Figure 5 As shown, the conductive ring frame 6 includes a metal ring 61 and a grounding wire 62. The metal ring 61 is sleeved onto the screw portion 52. One end of the grounding wire 62 is welded to the metal ring 61, and the other end extends through the connecting plug assembly 5 to the outside. The sealing block 51 and the shielding cover 511 are provided with a wire hole 513 for the grounding wire 62 to pass through. The structural configuration of the conductive ring frame 6 ensures that during use, one end of the metal ring 61 can contact the grounding block 3 for electrical conduction, while the other end can be connected to the outside through the wire hole 513 via the grounding wire 62. A positioning groove 514 is provided on the inner side of the sealing block 51, and a limiting strip 611 corresponding to the positioning groove 514 is integrally formed on the metal ring 61. The provision of the positioning groove 514 and the limiting strip 611 facilitates the conductive ring frame 6 to be sleeved on the connecting plug assembly 5 without rotation, thereby preventing the grounding wire 62 from being disconnected and increasing the stability of the grounding.

[0031] In this embodiment, during actual use, the grounding wire is welded to one side of the metal ring, and then the metal ring is sleeved on the screw portion of the connecting plug group, the grounding wire is passed through the wire hole, and the limit bar is engaged in the positioning groove, and then the assembled connecting plug group and the conductive ring frame are installed in the positioning tube, and the threaded part is installed in the threaded hole to achieve stable use. Finally, the grounding wire is directly grounded for normal use.

[0032] The above is a preferred embodiment of the present invention. Technicians in the field of the present invention can also change and modify the above embodiment. Therefore, the present invention is not limited to the above specific embodiment. Any obvious improvements, replacements or modifications made by technicians in this field on the basis of the present invention are within the scope of protection of the present invention.

Claims

1. A grounding structure of a mutual inductor, comprising a mutual inductor body (1), characterized in that: A base plate (2) is fixedly mounted on the lower end of the transformer body (1), a grounding block (3) is provided on the upper end surface of the base plate (2), the grounding block (3) is vertically fixedly mounted on the upper end surface of the base plate (2), a positioning tube (4) is provided on the outer surface of the grounding block (3), the positioning tube (4) and the grounding block (3) are integrally formed, a connecting plug group (5) is installed in the positioning tube (4), the connecting plug group (5) is threadedly connected and fixed to the grounding block (3), and a conductive ring frame (6) is sleeved on the connecting plug group (5).

2. The grounding structure of a mutual inductor according to claim 1, characterized in that: The grounding block (3) comprises a base (31) and a vertical plate (32), wherein the vertical plate (32) is arranged on the upper end surface of the base (31), and the vertical plate (32) and the base (31) are integrally formed.

3. The grounding structure of a mutual inductor according to claim 2, characterized in that: The vertical plate (32) is provided with a threaded hole (321) for installing the connecting plug group (5), and the threaded hole (321) is connected to the positioning tube (4).

4. The grounding structure of a mutual inductor according to claim 3, characterized in that: The connecting plug assembly (5) comprises a sealing block (51) and a screw portion (52), wherein the screw portion (52) is arranged at one end of the sealing block (51), and the screw portion (52) is fixedly connected to the sealing block (51).

5. The grounding structure of a mutual inductor according to claim 4, characterized in that: A shielding cover (511) is fixedly mounted on the outer end of the sealing block (51), and an operating panel (512) is further provided on the outer side of the shielding cover (511). The operating panel (512) and the shielding cover (511) are integrally formed.

6. The grounding structure of a mutual inductor according to claim 5, characterized in that: The conductive ring frame (6) comprises a metal ring (61) and a grounding wire (62). The metal ring (61) is sleeved on the screw portion (52). One end of the grounding wire (62) is welded and fixed to the metal ring (61), and the other end passes through the connecting plug group (5) and extends to the outside.

7. The grounding structure of a mutual inductor according to claim 6, characterized in that: The sealing block (51) and the shielding cover (511) are provided with a wire hole (513) for the grounding wire (62) to pass through, and a positioning groove (514) is provided on the inner side surface of the sealing block (51), and a limiting strip (611) corresponding to the positioning groove (514) is integrally formed on the metal ring (61).

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