CN216287942U

CN216287942U - Current transformer for combined voltage and current transformer

Info

Publication number: CN216287942U
Application number: CN202121479350.2U
Authority: CN
Inventors: 刘金兵; 陈炳乐; 陈繁; 林泽忠; 赵昭斌
Original assignee: Zhejiang Zhenli Power Technology Co ltd
Current assignee: Zhejiang Zhenli Power Technology Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-04-12
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses a current transformer for a combined voltage-current transformer, which comprises a conducting ring and a mounting column sleeved in the conducting ring, wherein a mesh enclosure assembly is sleeved on the mounting column and comprises a cylindrical part sleeved on the mounting column and an annular part arranged on the cylindrical part, and a groove is formed in the middle of the conducting ring. According to the utility model, the mesh enclosure assembly is arranged between the mounting column and the current transformer, and the mesh enclosure assembly comprises the cylindrical part sleeved on the mounting column and the annular parts welded at two ends of the cylindrical part to form the shielding mesh, so that the interference of an external magnetic field to the current transformer is effectively prevented, and the service life and the performance of the current transformer are improved.

Description

Current transformer for combined voltage and current transformer

Technical Field

The utility model relates to the technical field of transformers, in particular to a current transformer for a combined voltage-current transformer.

Background

The combined current-voltage transformer is a kind of transformer under the category of transformers, and is mostly installed in a high-voltage metering box or a cabinet and used as a power supply for metering electric energy or a relay protection device of electric equipment.

In the prior art, a current transformer in a combined voltage current transformer consists of an iron core, a winding and an insulating filler, because the mutual inductor has more magnetic fields, the performance of the current transformer is easily influenced to a certain extent, and generally, the insulating filler is made of resin, and after packaging, the resin is easily cracked due to overlarge internal pressure, so that the performance of a product is influenced.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to solve the problems, the utility model provides the current transformer for the combined voltage-current transformer, which has a simple structure, can shield an external magnetic field and is not easy to crack.

(II) technical scheme

The utility model discloses a current transformer for a combined voltage-current transformer, which comprises a conducting ring and a mounting column sleeved in the conducting ring, wherein a mesh enclosure assembly is sleeved on the mounting column and comprises a cylindrical part sleeved on the mounting column and an annular part arranged on the cylindrical part, and a groove is formed in the middle of the conducting ring.

In the present invention, the groove is an annular groove.

In the utility model, the conducting ring comprises an end a far away from the mesh enclosure assembly and an end b close to the mesh enclosure assembly, and the end b is provided with a connecting groove communicated with the groove.

In the utility model, a conductive assembly is arranged in the connecting groove, and the conductive assembly comprises a conductive rod and a connecting part.

In the utility model, one end of the conductive rod is connected with the connecting groove and bent at a certain angle and extends to the outer side of the conductive ring, and the other end of the conductive rod is a connecting part.

(III) advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

(1) according to the utility model, the mesh enclosure assembly is arranged between the mounting column and the current transformer, and the mesh enclosure assembly comprises the cylindrical part sleeved on the mounting column and the annular parts welded at two ends of the cylindrical part to form the shielding mesh, so that the interference of an external magnetic field on the current transformer is effectively prevented, and the service life and the performance of the current transformer are improved.

(2) The middle part of the conducting ring is provided with the groove, and the end b of the conducting ring is provided with the connecting groove communicated with the groove, so that the internal pressure after resin is packaged is effectively relieved, and the problem of service life reduction caused by cracking in the using process is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a connection structure of a conductive ring and a mounting post in embodiment 1;

fig. 2 is a schematic front view of a current transformer frame in embodiment 1 (the core and the coil of the current transformer are omitted);

fig. 3 is a schematic top view of a current transformer frame in embodiment 1;

FIG. 4 is a schematic perspective view (direction one) of the conductive ring of embodiment 1;

FIG. 5 is a schematic perspective view (direction two) of the conductive ring of embodiment 1.

10. Conductive rings, 11, a ends, 12, b ends, 13, grooves, 101, through grooves, 102, mounting grooves, 103, connecting grooves, 20, mesh enclosure components, 21, cylindrical parts, 22, annular parts, 30, conductive components, 301, conductive rods, 302, connecting parts, 40 and mounting posts.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1 to 5, the current transformer for a combined voltage-current transformer according to the present invention includes a conductive ring 10 and a mounting post 40 sleeved in the conductive ring 10, wherein a mesh enclosure assembly 20 is sleeved on the mounting post 40, the mesh enclosure assembly 20 includes a cylindrical portion 21 sleeved on the mounting post 40 and an annular portion 22 disposed on the cylindrical portion 21, and an annular groove 13 is disposed in a middle portion of the conductive ring 10.

Further, the ring portions 22 of the mesh enclosure assembly 20 are welded to the upper and lower portions of the cylindrical portion 21, constituting a mounting frame of the current transformer, i.e., the current transformer is disposed between the two ring portions 22, to isolate the influence of the external magnetic field on the current transformer.

Further, the conductive ring 10 includes an a end 11 far away from the guard assembly 20 and a b end 12 close to the guard assembly 20, a connecting groove 103 communicating with the groove 13 is disposed on a side portion of the b end 12, and a mounting groove 102 for clamping the mounting post 40 is disposed on a top portion of the b end 12.

Further, a conductive assembly 30 is arranged in the connecting groove 103, the conductive assembly 30 includes a conductive rod 301 and a connecting portion 302, one end of the conductive rod 301 is connected to the connecting groove 103, bent at a certain angle and extended to the outside of the conductive ring 10, and the other end is the connecting portion 302.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.

Claims

1. A current transformer for a combined voltage-current transformer comprises a conductive ring (10) and a mounting post (40) sleeved in the conductive ring (10),

the method is characterized in that:

the mounting column (40) is sleeved with the net cover component (20), the net cover component (20) comprises a cylindrical part (21) sleeved on the mounting column (40) and an annular part arranged on the cylindrical part (21), and a groove (13) is formed in the middle of the conducting ring (10).

2. The current transformer for the combined voltage-current transformer as claimed in claim 1, wherein: the groove (13) is an annular groove.

3. The current transformer for the combined voltage-current transformer as claimed in claim 1, wherein: the conducting ring (10) comprises an a end (11) far away from the mesh enclosure assembly (20) and a b end (12) close to the mesh enclosure assembly (20), and a connecting groove (103) communicated with the groove (13) is formed in the b end (12).

4. A current transformer for a combined voltage-current transformer according to claim 3, wherein: a conductive component (30) is arranged in the connecting groove (103), and the conductive component (30) comprises a conductive rod (301) and a connecting part (302).

5. The current transformer for the combined voltage-current transformer as claimed in claim 4, wherein: one end of the conductive rod (301) is connected with the connecting groove (103), bent at a certain angle and extended to the outer side of the conductive ring (10), and the other end is a connecting part (302).