Open type current transformer

Abstract

The utility model discloses an open type current transformer in the technical field of current transformers, which comprises a base, a second shell fixedly connected with the base is arranged on the base, the second shell is annular, a second semi-annular iron core detachably connected with a second limiting groove is arranged in the second limiting groove, and a second semi-annular iron core is arranged in the second limiting groove. A first shell detachably connected with the second shell is arranged at the top end of the second shell, the first shell is in an annular shape, a first semi-annular iron core detachably connected with the first limiting groove is arranged in the first limiting groove, the first shell and the second shell are detachably connected, and the first semi-annular iron core detachably connected with the first shell is arranged in the first shell. The current transformer can effectively solve the technical problem that a wire of an existing current transformer connected with external equipment through a fastening screw is tedious in disassembly and assembly and inconvenient to connect with the external equipment, the first shell and the second shell can be closed after threading, disassembly and assembly are simple and convenient, and the current transformer can be conveniently connected with the external equipment. And the practicability and the universality are high.

Description

TECHNICAL FIELD

[0001] The utility model relates to current transformer technical field, concretely is a kind of open type current transformer. BACKGROUND

[0002] With the progress of digital electronic technology, various electronic electric energy meter and some portable electronic measuring equipment are gradually promoted to use, current transformer is composed of closed core and coil winding, primary winding is connected in series in the current line to be measured, and the whole current of line often flows through;Secondary winding has more turns, and is connected in series in instrument and protection circuit, the working state of current transformer is close to short circuit, and the role is to convert the primary current with larger value into secondary current with smaller value through certain transformation ratio to measure.

[0003] However, the current transformer connects the wire of external equipment through fastening screw, and it is inconvenient to connect external equipment due to complicated disassembly and assembly. UTILITY MODEL CONTENTS

[0004] In order to overcome the deficiencies of prior art, the utility model provides an open type current transformer, which can effectively solve the technical problems of the current transformer connecting the wire of external equipment through fastening screw, complicated disassembly and assembly, and inconvenience to connect external equipment.

[0005] The utility model solves technical scheme that it adopts: an open type current transformer, including base, the base is equipped with with fixed connection second shell, the second shell is annular, and the inside of second shell is equipped with with annular second limiting slot, the inside of second limiting slot is equipped with with detachable connection second half ring core, the top of second shell is equipped with with detachable connection first shell, the first shell is annular, and the inside of first shell is equipped with with annular first limiting slot, and the inside of first limiting slot is equipped with with detachable connection first half ring core.

[0006] Preferably, the base is provided with a reinforcing rib integrally formed therewith, and adjusting grooves are formed on both sides of the base.

[0007] Preferably, the end surface of the first shell is provided with a first mounting block fixedly connected thereto, the first mounting block is provided with a positioning groove, the end surface of the second shell is provided with a second mounting block fixedly connected thereto, the second mounting block is provided with a positioning column, and the positioning column and the positioning groove are insertedly connected.

[0008] Preferably, two sides of the first shell are provided with a first connecting piece integrally formed with one of the two sides, two sides of the second shell are provided with a second connecting piece integrally formed with one of the two sides, and the first connecting piece and the second connecting piece are provided with a locking bolt and a locking nut for fastening connection.

[0009] Preferably, the first half-ring-shaped iron core is arranged in the first limiting groove and is clamped with the first limiting groove, and the second half-ring-shaped iron core is arranged in the second limiting groove and is clamped with the second limiting groove.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] By arranging the first shell and the second shell in detachable connection, the first shell is internally provided with the first half-ring-shaped iron core in detachable connection, and the second shell is internally provided with the second half-ring-shaped iron core in detachable connection, so that the technical problem that the current transformer is inconvenient to connect external equipment due to complicated disassembly and assembly of the wire of the external equipment through fastening screws can be effectively solved, the first shell and the second shell can be closed after threading, and the utility model has the advantages of simple disassembly and assembly, high practicability and high universality. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 FIG. 1 is a structural schematic view of the open-type current transformer of the utility model;

[0013] Fig. 2 FIG. 2 is an exploded view of the open-type current transformer of the utility model;

[0014] Fig. 3 FIG. 3 is a structural schematic view of the base in the open-type current transformer of the utility model.

[0015] Reference numerals in the drawing:

[0016] 1- first shell; 2- second shell; 3- base; 4- first mounting block; 5- locking bolt; 6- positioning column; 7- second mounting block; 8- locking nut; 9- second half-ring-shaped iron core; 10- reinforcing rib; 11- second limiting groove; 12- first half-ring-shaped iron core; 13- second connecting piece; 14- first connecting piece; 15- positioning groove; 16- first limiting groove; 17- adjusting groove. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] AsFigs. 1-3 The utility model provides an open type current transformer, including base 3, base 3 is equipped with with fixedly connected second shell 2, base 3 is equipped with with integral forming reinforcing rib 10, and the both sides of base 3 are all seted up adjusting groove 17, second shell 2 is annular, and the inside of second shell 2 is seted up with annular second limiting slot 11, the inside of second limiting slot 11 is equipped with with detachable connection second half annular core 9, the top of second shell 2 is equipped with with detachable connection first shell 1, first shell 1 is annular, and the inside of first shell 1 is seted up with annular first limiting slot 16, the inside of first limiting slot 16 is equipped with with detachable connection first half annular core 12, the end surface of first shell 1 is equipped with with fixed connection first mounting block 4, first mounting block 4 is equipped with with positioning slot 15, the end surface of second shell 2 is equipped with with fixed connection second mounting block 7, second mounting block 7 is equipped with with positioning column 6, positioning column 6 is insertedly connected with positioning slot 15, the both sides of first shell 1 are equipped with with integral forming first connecting piece 14, the both sides of second shell 2 are equipped with with integral forming second connecting piece 13, and the first connecting piece 14 is equipped with with integral forming first connecting piece 14 between second connecting piece 13, and is equipped with with the locking bolt 5 of realizing fastening connection and locking nut 8, first half annular core 12 is arranged in first limiting slot 16 and is connected with, and second half annular core 9 is arranged in second limiting slot 11 and is connected with.

[0019] Compared with the prior art: by setting detachable connection first shell 1 and second shell 2, and the inside of first shell 1 is equipped with with detachable connection first half annular core 12, and the inside of second shell 2 is equipped with with detachable connection second half annular core 9, the technical problem that the current transformer of the prior art is connected with the lead of external equipment through fastening screw and is inconvenient to disassemble and assemble can be effectively solved, and the first shell 1 and the second shell 2 can be closed after threading, so that the utility model is simple and convenient to disassemble and assemble, practical and universal.

[0020] It is apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments but that the utility model can be implemented in other ways without departing from the spirit or essential characteristics of the utility model. Thus, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes coming within the meaning and equivalency range of the claims are intended to be embraced therein. No limitation is intended by the use of any heading.

Claims

1. An open core current transformer comprising a base, characterized in that, The base is provided with a second shell fixedly connected therewith, the second shell is annular, a second limiting groove in the shape of a ring is formed in the interior of the second shell, a second half annular core is detachably connected in the interior of the second limiting groove, the top end of the second shell is provided with a first shell detachably connected therewith, the first shell is annular, a first limiting groove in the shape of a ring is formed in the interior of the first shell, and a first half annular core is detachably connected in the interior of the first limiting groove.

2. An open core current transformer according to claim 1, wherein, The base is provided with a reinforcing rib integrally formed therewith, and adjusting grooves are formed in the two sides of the base.

3. An open core current transformer according to claim 1, wherein, The end face of the first shell is provided with a first mounting block fixedly connected therewith, the first mounting block is provided with a positioning groove, the end face of the second shell is provided with a second mounting block fixedly connected therewith, the second mounting block is provided with a positioning column, and the positioning column and the positioning groove are in plug-in connection.

4. An open core current transformer as defined in claim 1, wherein, The two sides of the first shell are provided with first connecting pieces integrally formed therewith, the two sides of the second shell are provided with second connecting pieces integrally formed therewith, and locking bolts and locking nuts for fastening connection are arranged between the first connecting pieces and the second connecting pieces.

5. An open core current transformer as defined in claim 1, wherein, The first half annular core is arranged in the interior of the first limiting groove and is clamped therewith, and the second half annular core is arranged in the interior of the second limiting groove and is clamped therewith.

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