CN211350288U

CN211350288U - Zero sequence mutual inductor

Info

Publication number: CN211350288U
Application number: CN202020469844.1U
Authority: CN
Inventors: 王海良
Original assignee: Minpu Electric Co ltd
Current assignee: Minpu Electric Group Co., Ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-08-25
Anticipated expiration: 2030-04-02

Abstract

The utility model provides a zero sequence transformer, including coil part and shell part, the shell include split type first portion and second portion, and the mutual lock joint of two parts is fixed, all be equipped with the hole groove that supplies to be passed by the detection part on the first portion of shell and the second portion, be equipped with the shield cover between coil and shell. The utility model discloses a with the structure of shell design for the mutual lock joint of two parts for the assembly is simple, is separated by through the shield cover between coil and the shell, and the shield cover adopts flexible material to make, can compress tightly the shield cover like this in the shell lock joint, makes the coil can the internal fixation of shell, and the shield cover sets up to the rubber material best, and it not only has the flexibility, can also play sealed effect, extrudes the shield cover formation after the mutual lock joint of shell and seals.

Description

Zero sequence mutual inductor

Technical Field

The utility model belongs to the technical field of power protection equipment, especially, relate to a zero sequence transformer.

Background

The zero sequence transformer adopts an ABS engineering plastic shell, resin is poured into a full seal, the insulation performance is good, the appearance is attractive, and the zero sequence transformer has the characteristics of high sensitivity, good linearity, reliable operation and convenience in installation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a zero sequence transformer that assembly efficiency is high is provided.

The utility model discloses a realize through following technical scheme:

the zero sequence transformer comprises a coil part and a shell part, wherein the shell comprises a first split part and a second split part which are fastened and fixed with each other, hole grooves for induction and detection parts to pass through are formed in the first part and the second part of the shell, and a shielding cover is arranged between the coil and the shell. The utility model discloses a design the shell for the structure of the mutual lock joint of two parts for the assembly is simple, is separated by through the shield cover between coil and the shell, and shield cover metal material adopts tensile technology to make, can compress tightly the shield cover like this in the shell lock joint, makes the coil can the internal fixation of shell, compresses tightly the shield cover after the mutual lock joint of shell and forms sealedly.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is an exploded view of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples.

Examples

As shown in fig. 1 and fig. 2, the zero sequence transformer includes a coil portion 1, a housing portion and a shielding case 2 disposed between the coil and the housing, the housing includes a first portion 3 and a second portion 4 which are separated from each other, and the two portions are fastened and fixed to each other, and the first portion 3 and the second portion 4 of the housing are both provided with a hole slot 5 for passing an induced and detected component, in this embodiment, a circular through hole disposed at a middle position of the housing. In this embodiment the coil is separated from the shell by the shielding case 2, and the shielding case 2 is made by adopting a metal material stretching process, so that an effective electromagnetic interference resistance effect can be achieved when the coil is used, the coil can be fixed in the shell, and the shielding case 2 is extruded to form a seal after the shells are fastened with each other.

In order to fix the coil in the shell and shake, a boss 6 for sleeving the coil is arranged in the middle of at least one of the first part 3 or the second part 4, and the coil is directly wound on the boss 6 or sleeved on the boss 6 after being wound.

In order to better realize the sealing effect of the coil in the shell, the shielding case 2 is designed into an integral pull-open structure, and is of an external pull-open structure, and the shielding case 2 wraps the coil and is embedded in the shell. After the two parts of the shell are buckled, the shell compresses the shielding cover 2, so that the shielding cover 2 compresses the coil, and a certain sealing effect can be achieved.

In order to make the coil exit and entrance end capable of extending, a notch 21 for the coil exit and entrance end to extend is provided on the shielding case 2, and the size of the notch 21 is just enough for the coil exit and entrance end to pass through. The first part or the second part is provided with a groove 9 for the coil to pass through.

The first part 3 and/or the second part 4 are/is provided with a buckle 7, and the other corresponding part is provided with a clamping part 8 which is mutually buckled with the buckle 7. In this embodiment, the first portion 3 and the second portion 4 are both provided with the fasteners 7, the fasteners 7 on the shells of the two portions are arranged in a staggered manner, and the other portion of the corresponding shell is provided with a clamping portion 8 matched with the fasteners 7. Thus, the two parts of the shell are buckled more firmly.

Buckle 7 locate shell side terminal surface, buckle 7 part is that protrusion sets up in shell side terminal surface, buckle 7 tip extends to another part of shell, the joint position of extension is equipped with two buckling parts 71, be equipped with the shrink groove 72 that supplies buckling part 71 to shrink between two buckling parts 71, design two buckling parts 71 with single buckle 7, it is more firm to make the lock joint of shell two parts, the setting of shrink groove 72 can make two buckling parts 71 all can inwards contract and produce elasticity, thereby play better lock joint effect.

The joint portion 8 locate the shell side, joint portion 8 is equipped with the logical groove 81 that supplies buckle 7 to pass, buckle 7 passes behind the logical groove 81 and produces the lock joint with joint portion 8. The buckle 7 and the shell are of an integrated structure and are made of plastic materials. The number of the buckles 7 is at least two, and the buckles are distributed on the outer side of the shell in an annular array mode.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that simple modifications and substitutions by those skilled in the art are within the scope of the present invention without departing from the spirit and scope of the present invention.

Claims

1. A zero sequence transformer comprising a coil portion and a housing portion, characterized in that: the casing include split type first portion and second part, and two parts lock joint is fixed each other, all be equipped with the hole groove that supplies to be detected the part and pass on the first portion of casing and the second part, be equipped with the anti-interference shield cover between coil and casing.

2. The zero sequence transformer of claim 1, characterized in that: at least one of the first part and the second part is provided with a boss for sleeving the coil, and the coil is directly wound on the boss or sleeved on the boss after being wound.

3. The zero sequence transformer of claim 2, characterized in that: the shielding cover is of an integral pull-open type structure and is of an external pull-open type structure, and the shielding cover wraps the coil and is embedded in the shell.

4. A zero sequence transformer according to claim 3, characterized in that: the shielding cover is provided with a notch for the lead of the coil input/output end to extend out.

5. A zero sequence transformer according to claim 1 or 2, characterized in that: the first part and/or the second part are/is provided with a buckle, and the other corresponding part is provided with a clamping part which is mutually buckled with the buckle.

6. The zero sequence transformer of claim 5, characterized in that: the buckle locate shell side terminal surface, the buckle tip extends to shell another part, extension portion's joint position is equipped with two buckling parts, is equipped with the shrink groove that supplies buckling part shrink between two buckling parts.

7. The zero sequence transformer of claim 6, characterized in that: the clamping portion is arranged at the side end of the shell, the clamping portion is provided with a through groove for the buckle to pass through, and the buckle passes through the through groove and then is buckled with the clamping portion.

8. The zero sequence transformer of claim 7, characterized in that: the first part and the second part of the split type shell are respectively provided with a buckle, the buckles on the shells of the two parts are arranged in a staggered mode, and the other part of the corresponding shell is provided with a clamping portion matched with the buckles.

9. The zero sequence transformer of claim 8, characterized in that: the buckle and the shell are of an integrated structure and are made of plastic materials.

10. The zero sequence transformer of claim 8, characterized in that: the buckle be at least two, and the annular array distributes in the outside of shell.