CN215731289U

CN215731289U - High-precision intelligent current transformer for small circuit breaker

Info

Publication number: CN215731289U
Application number: CN202121899626.2U
Authority: CN
Inventors: 冯建定; 周平安; 岳名洋
Original assignee: Zhejiang Cunyu Electric Technology Co ltd
Current assignee: Zhejiang Cunyu Electric Technology Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-02-01
Anticipated expiration: 2031-08-12

Abstract

The utility model provides a high-precision intelligent current transformer for a small circuit breaker, which comprises a mounting seat and a closed-loop iron core positioned in the mounting seat, wherein insulating layers are arranged on the inner side and the outer side of the closed-loop iron core respectively, each insulating layer is provided with a third heat dissipation part for dissipating heat of the closed-loop iron core, the third heat dissipation part is positioned on one side, close to the closed-loop iron core, of each insulating layer, the contact area between the insulating layers and the closed-loop iron core is reduced by the third heat dissipation part, so that one part of the closed-loop iron core is exposed in the air, and a first heat dissipation part for ventilating and dissipating heat is formed; the surface of the first heat dissipation part is provided with a second heat dissipation part for increasing the surface area of the first heat dissipation part; according to the utility model, the third heat dissipation part is arranged on the insulating layer, so that the closed-loop iron core can form the first heat dissipation part, heat is taken away through air circulation, the heat dissipation performance of the equipment is effectively improved, and the service life of the equipment is prolonged.

Description

High-precision intelligent current transformer for small circuit breaker

Technical Field

The utility model relates to the technical field of current transformers, in particular to a high-precision intelligent current transformer for a small circuit breaker.

Background

The current transformer is an instrument for measuring by converting a large primary side current into a small secondary side current according to the electromagnetic induction principle. The current transformer is composed of a closed iron core and a winding. The primary side winding of the transformer has few turns and is connected in a circuit of the current to be measured.

But current transformer still has some drawbacks, and current transformer can produce more heat in the in-service use, and current transformer radiating effect is relatively poor, can cause certain damage to current transformer after long-term the use to current transformer's life has been shortened.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the high-precision intelligent current transformer for the miniature circuit breaker.

The utility model solves the technical problems through the following technical means:

the small circuit breaker high-precision intelligent current transformer comprises a mounting seat and a closed-loop iron core positioned in the mounting seat, wherein insulating layers are arranged on the inner side and the outer side of the closed-loop iron core, each insulating layer is provided with a third heat dissipation part for dissipating heat of the closed-loop iron core, the third heat dissipation part is positioned on one side, close to the closed-loop iron core, of each insulating layer, the contact area between each insulating layer and the closed-loop iron core is reduced by the aid of the third heat dissipation part, so that one part of the closed-loop iron core is exposed in the air, and a first heat dissipation part for ventilating and dissipating heat is formed; the surface of the first heat sink part is provided with a second heat sink part for increasing the surface area of the first heat sink part.

Furthermore, the third heat dissipation part is a groove formed in the surface of one side, close to the closed-loop iron core, of the insulating layer, and the opening of the groove is sealed by the first heat dissipation part to form a semicircular through hole.

Further, the third heat dissipation part is multiple and is uniformly distributed in an annular array.

Further, the third heat dissipation part is a linear strip groove.

Furthermore, the surface of the closed-loop iron core is integrally provided with a protruding block, and the protruding block is a second heat dissipation part and is positioned in a third heat dissipation part.

Furthermore, the protruding blocks are rectangular and uniformly distributed on the first heat dissipation part in a linear array manner.

The utility model has the beneficial effects that:

1. the third heat dissipation part is arranged on the insulating layer, so that the closed-loop iron core can form the first heat dissipation part, the first heat dissipation part is exposed in the air, heat is taken away through air circulation, the heat dissipation performance of the equipment is effectively improved, and the service life of the equipment is prolonged;

2. through the arrangement of the second heat dissipation part, the surface area of the first heat dissipation part exposed to the air is increased, and therefore the heat dissipation performance of the equipment is further improved.

3. The third radiating part is arranged into the linear strip groove, so that the resistance of air in circulation is reduced conveniently.

Drawings

FIG. 1 is a schematic structural diagram of a high-precision intelligent current transformer for a miniature circuit breaker according to the present invention;

FIG. 2 is an enlarged view of A of FIG. 1 according to the present invention;

in the figure: 1. a mounting seat; 2. a closed-loop iron core; 21. a first heat sink portion; 22. a second heat sink member; 3. an insulating layer; 31. and a third heat sink member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 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.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Examples

As shown in fig. 1 and 2, the high-precision intelligent current transformer for the miniature circuit breaker in the present embodiment includes a mounting base 1 and a closed-loop iron core 2 located in the mounting base 1, wherein an insulating layer 3 is disposed on both the inside and outside of the closed-loop iron core 2, the insulating layer 3 has a third heat dissipation portion 31 for dissipating heat from the closed-loop iron core 2, the third heat dissipation portion 31 is located on one side of the insulating layer 3 close to the closed-loop iron core 2, and the third heat dissipation portion 31 reduces a contact area between the insulating layer 3 and the closed-loop iron core 2, so that a part of the closed-loop iron core 2 is exposed to air to form a first heat dissipation portion 21 for ventilation and heat dissipation; the surface of the first heat sink 21 is provided with a second heat sink 22 for increasing the surface area thereof;

when the heat dissipation device is used, as shown in fig. 1 and 2, the third heat dissipation part 31 is arranged on the insulating layer 3, so that the closed-loop iron core 2 can form the first heat dissipation part 21, the first heat dissipation part 21 is exposed in the air, and heat is taken away through air circulation, the heat dissipation performance of the equipment is effectively improved, and the service life of the equipment is prolonged; the provision of the second heat sink member 22 facilitates an increase in the surface area of the first heat sink member 21 exposed to air, thereby further improving the heat dissipation performance of the apparatus.

As shown in fig. 2, the third heat sink 31 is a groove formed on the surface of the insulating layer 3 near the closed-loop iron core 2, and an opening of the groove is closed by the first heat sink 21 to form a semicircular through hole;

by arranging the third heat sink 31 as the groove, a part of the surface of the closed-loop iron core 2 is exposed to the air, and the first heat sink 21 is formed to ventilate and dissipate heat, so that the heat dissipation performance of the equipment is effectively improved.

As shown in fig. 2, the third heat sink members 31 are plural and uniformly distributed in an annular array;

by providing a plurality of third heat sink members 31 and uniformly distributing them in an annular array, uniform heat dissipation is facilitated.

The third heat sink member 31 may be in various shapes, for example: long wave shape, long zigzag shape, etc. Preferably, the third heat sink member 31 is a linear elongated groove;

the third heat sink member 31 is formed as a linear elongated groove, which facilitates reduction of resistance to air flow.

As shown in fig. 2, a protruding block is integrally arranged on the surface of the closed-loop iron core 2, and the protruding block is a second heat sink part 22 and is located in a third heat sink part 31;

the second heat sink member 22 is formed as a projection, so that the surface area of the first heat sink member 21 exposed to the air is increased, thereby improving the heat dissipation effect.

The bumps can be of various shapes, for example: hemispherical, conical, etc. As shown in fig. 2, the raised blocks are preferably rectangular and uniformly distributed in a linear array on the first heat sink member 21.

It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. Small-size high accuracy intelligence current transformer for circuit breaker, including mount pad (1) and be located closed loop iron core (2) of mount pad (1), the inside and outside both sides of closed loop iron core (2) all are provided with insulating layer (3), its characterized in that: the insulating layer (3) is provided with a third heat dissipation part (31) for dissipating heat of the closed-loop iron core (2), the third heat dissipation part (31) is positioned on one side, close to the closed-loop iron core (2), of the insulating layer (3), and the third heat dissipation part (31) reduces the contact area of the insulating layer (3) and the closed-loop iron core (2), so that a part of the closed-loop iron core (2) is exposed in the air to form a first heat dissipation part (21) for ventilating and dissipating heat; the surface of the first heat sink member (21) is provided with a second heat sink member (22) for increasing the surface area thereof.

2. The high-precision intelligent current transformer for the miniature circuit breaker according to claim 1, wherein: the third heat dissipation part (31) is a groove formed in the surface of one side, close to the closed-loop iron core (2), of the insulating layer (3), and the opening of the groove is sealed by the first heat dissipation part (21) to form a semicircular through hole.

3. The high-precision intelligent current transformer for the miniature circuit breaker according to claim 2, wherein: the third heat sink members (31) are provided in plurality and uniformly distributed in an annular array.

4. The high-precision intelligent current transformer for the miniature circuit breaker according to claim 3, wherein: the third heat dissipation part (31) is a linear strip groove.

5. The high-precision intelligent current transformer for the miniature circuit breaker according to claim 1, wherein: the closed-loop iron core (2) is integrally provided with a protruding block on the surface, and the protruding block is a second heat dissipation part (22) and is located in a third heat dissipation part (31).

6. The high-precision intelligent current transformer for the miniature circuit breaker according to claim 5, wherein: the protruding blocks are rectangular and uniformly distributed on the first heat dissipation part (21) in a linear array manner.