CN216957699U

CN216957699U - Current transformer with novel winding

Info

Publication number: CN216957699U
Application number: CN202122990475.8U
Authority: CN
Inventors: 魏晋峰
Original assignee: Shenzhen Highlight Electronic Co ltd
Current assignee: Shenzhen Highlight Electronic Co ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-07-12
Anticipated expiration: 2031-12-01

Abstract

The utility model relates to the field of current transformers with novel windings, and discloses a current transformer with novel windings, which comprises a framework, the framework is provided with a secondary winding, secondary winding pins connected with the secondary winding are embedded in the framework, pins connected with the secondary winding are embedded in the framework, a primary winding copper sheet connected with the secondary winding is embedded in the framework, a magnetic core is arranged in the framework, compared with the assembly of the original primary winding and the framework, the current transformer of the novel winding uses the pre-buried copper sheet winding framework, the pre-buried work of the novel framework is completed by machinery, the operation is rapid and accurate, the labor is saved, the assembly of the primary winding and the framework needs to be firstly positioned and then fixed, the manual operation wastes time and labor, meanwhile, the copper sheet is integrally embedded in the framework, so that the isolation work with the secondary winding and the magnetic core is completed, and the voltage-resistant requirement is met.

Description

Current transformer with novel winding

Technical Field

The utility model relates to the field of current transformers with novel windings, in particular to a current transformer with novel windings.

Background

The current transformer of the novel winding is an instrument for measuring by converting a large current on a primary side into a small current on a secondary side according to the electromagnetic induction principle. The current transformer of the novel winding consists of a closed iron core and a winding. The primary side winding of the current transformer has few turns and is connected in a circuit of current to be measured in series, and the secondary side winding has more turns, so that the current transformer with the novel winding is provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a novel winding current transformer, which solves the problems.

(II) technical scheme

In order to achieve the above purpose, the utility model provides the following technical scheme: the utility model provides a current transformer of novel winding, includes the skeleton, be provided with secondary winding on the skeleton, pre-buried in the skeleton has the secondary winding pin of being connected with secondary winding, pre-buried on the skeleton has the primary winding copper sheet of being connected with secondary winding, the inside of skeleton is provided with the magnetic core.

Preferably, a winding slot is formed in the framework, the secondary winding is wound inside the winding slot, and the cross section of the pin of the secondary winding is rectangular.

Preferably, a through-hole is formed in the magnetic core, the magnetic core is inserted into the through-hole, the primary winding copper sheet and the secondary winding pin are embedded in the framework, the secondary winding is wound after the pin is automatically hung on the pin by adopting automatic equipment, a wire is hung on the other secondary winding pin after the winding is finished, the wire is broken by using a pulling force, and then the magnetic core is assembled by an automatic machine, so that the assembling work can be finished, and the manufacturing time is greatly saved.

Preferably, a clamping structure used for fixing the magnetic core in a matched manner is arranged on the inner wall of the through hole.

Preferably, the clamping structure comprises a spring and a clamping block, two grooves which correspond up and down are formed in the inner wall of the through hole, the spring is fixedly installed in each groove, one end, close to the central point of the through hole, of the spring is fixedly connected with the clamping block, a clamping groove is formed in the position, corresponding to the clamping block, of the magnetic core, the clamping block is matched with the clamping groove, and the clamping block is movably clamped with the clamping groove.

Preferably, the cross section of fixture block is triangle-shaped, and the fixture block is close to the both sides wall face of through-hole central point and is the inclined plane, promotes the magnetic core to the inside of through-hole, then the surface of magnetic core can extrude the fixture block, extrudees the fixture block to the inside that is close to the recess, when the fixture block removed to the place that corresponds with the draw-in groove position, the fixture block can be in the same place with the draw-in groove joint, with the two fixed connection together, such setting can be so that the magnetic core fastens with the skeleton is fixed more. Is not easy to loosen.

(III) advantageous effects

Compared with the prior art, the utility model provides a novel winding current transformer, which has the following beneficial effects:

1. this current transformer of novel winding compares with former primary winding with the skeleton assembly with pre-buried copper sheet winding skeleton, and the pre-buried work of novel skeleton is accomplished by machinery, and is swift accurate, saves artifically, and primary winding and skeleton assembly need fix at first, fix again, and manual operation wastes time and energy, simultaneously because the copper sheet is whole pre-buried inside the skeleton, accomplished with the work of keeping apart of secondary winding and magnetic core, satisfied withstand voltage requirement.

2. This novel current transformer of winding, secondary winding business turn over foot adopt square cross section to compare with ordinary circular cross section, and right angle limit department can be utilized to direction cross section pin, and copper line stress concentration effect adopts directly through certain pulling force direct broken string, and needn't increase the broken string process like ordinary pin, has improved efficiency.

3. This novel current transformer of winding promotes the magnetic core to the inside of through-hole, then the surface of magnetic core can extrude the fixture block, extrudees the fixture block to the inside that is close to the recess, when the fixture block moved to the place that corresponds with the draw-in groove position, the fixture block can be in the same place with the draw-in groove joint, with the two fixed connection together, such setting can be so that the magnetic core fastens with the skeleton is fixed more. Is not easy to loosen.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

fig. 3 is a partially enlarged view of a portion a in fig. 1.

In the figure: 1. a magnetic core; 2. a primary winding copper sheet; 3. a pin; 4. a secondary winding pin; 5. a secondary winding; 6. a winding groove; 7. a framework; 8. a through hole; 9. a spring; 10. a groove; 11. a clamping block; 12. a clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-3, a current transformer with a novel winding includes a frame 7, a secondary winding 5 is disposed on the frame 7, a secondary winding pin 4 connected to the secondary winding 5 is embedded in the frame 7, a pin 3 connected to the secondary winding 5 is embedded in the frame 7, a primary winding copper sheet 2 connected to the secondary winding 5 is embedded in the frame 7, and a magnetic core 1 is disposed inside the frame 7.

Furthermore, a winding groove 6 is formed in the framework 7, the secondary winding 5 is wound in the winding groove 6, and the cross section of the secondary winding pin 4 is rectangular.

Furthermore, a through hole 8 is formed in the magnetic core 1 in a penetrating mode, the magnetic core 1 is inserted into the through hole 8, the primary winding copper sheet 2 and the secondary winding pin 4 are embedded into the framework 7, the secondary winding 5 adopts automation equipment to automatically hang the pin and wind the pin after the pin 3, after winding is completed, a wire is hung on the other secondary winding pin 4, the wire is broken by tensile force, then the magnetic core is assembled by an automatic machine, assembling work can be completed, and manufacturing time is greatly saved.

Further, a clamping structure used for matching and fixing the magnetic core 1 is arranged on the inner wall of the through hole 8.

Further, the clamping structure includes spring 9 and fixture block 11, sets up two recesses 10 that correspond from top to bottom on the inner wall of through-hole 8, and spring 9 fixed mounting is in the inside of recess 10, and spring 9 is close to the one end of through-hole 8 central point and is in the same place with fixture block 11 fixed connection, has seted up draw-in groove 12 on the magnetic core 1 corresponds the position of fixture block 11, fixture block 11 and draw-in groove 12 looks adaptation, and fixture block 11 and draw-in groove 12 activity joint are in the same place.

Further, the cross section of fixture block 11 is triangle-shaped, and the fixture block 11 is close to the both sides wall face of 8 central points of through-hole for the inclined plane, promote magnetic core 1 to the inside of through-hole 8, then fixture block 11 can be extruded on the surface of magnetic core 1, with fixture block 11 to the inside extrusion that is close to recess 10, when fixture block 11 removed the place that corresponds with draw-in groove 12 position, fixture block 11 can be in the same place with draw-in groove 12 joint, be in the same place with the two fixed connection, such setting can make the fixed fastening more of magnetic core 1 and skeleton 7. Is not easy to loosen.

The working principle is as follows: the primary winding copper sheet 2 and the secondary winding pin 4 are pre-embedded in the framework 7, the secondary winding 5 is wound after the pin 3 is automatically hung by automatic equipment, the wire is hung on the other pin 4 of the secondary winding after winding is completed, the wire is broken by tensile force, and then the magnetic core is assembled by an automatic machine, so that the assembly work can be completed, and the manufacturing time is greatly saved.

Promote magnetic core 1 to the inside of through-hole 8, then the surface of magnetic core 1 can extrude fixture block 11, with the inside extrusion of fixture block 11 to being close to recess 10, when fixture block 11 moved to the place that corresponds with draw-in groove 12 position, fixture block 11 can be in the same place with draw-in groove 12 joint, with the two fixed connection together, such setting can make the fixed fastening more of magnetic core 1 and skeleton 7. Is not easy to loosen.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a current transformer of novel winding, includes skeleton (7), its characterized in that: the winding machine is characterized in that a secondary winding (5) is arranged on the framework (7), secondary winding pins (4) connected with the secondary winding (5) are pre-buried in the framework (7), pins (3) connected with the secondary winding (5) are pre-buried in the framework (7), primary winding copper sheets (2) connected with the secondary winding (5) are pre-buried in the framework (7), and a magnetic core (1) is arranged inside the framework (7).

2. The current transformer with novel winding according to claim 1, characterized in that: the winding groove (6) is formed in the framework (7), the secondary winding (5) is wound in the winding groove (6), and the cross section of the secondary winding pin (4) is rectangular.

3. The current transformer with novel winding according to claim 1, characterized in that: the magnetic core (1) is provided with a through hole (8), and the magnetic core (1) is inserted into the through hole (8).

4. The novel winding current transformer according to claim 3, characterized in that: the inner wall of the through hole (8) is provided with a clamping structure used for matching with the fixed magnetic core (1).

5. The novel winding current transformer according to claim 4, characterized in that: the joint structure includes spring (9) and fixture block (11), set up recess (10) that correspond about two on the inner wall of through-hole (8), spring (9) fixed mounting is in the inside of recess (10), and spring (9) are close to the one end of through-hole (8) central point and fixture block (11) fixed connection together, draw-in groove (12) have been seted up on the position that magnetic core (1) corresponds fixture block (11), fixture block (11) and draw-in groove (12) looks adaptation, fixture block (11) are in the same place with draw-in groove (12) activity joint.

6. The novel winding current transformer according to claim 5, characterized in that: the cross section of the clamping block (11) is triangular, and two side wall surfaces of the clamping block (11) close to the central point of the through hole (8) are inclined surfaces.