CN217114089U

CN217114089U - Current transformer

Info

Publication number: CN217114089U
Application number: CN202122197875.3U
Authority: CN
Inventors: 方锦; 杨爱军; 何剑平; 吴华利
Original assignee: Zhuhai Galaxy Smart Grid Co ltd
Current assignee: Zhuhai Galaxy Smart Grid Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-08-02
Anticipated expiration: 2031-09-10

Abstract

The utility model discloses a current transformer, include: an iron core portion; a winding wound around the core portion; the winding is wound on the iron core part, the shell comprises the mounting part and the fixing part, the iron core part is mounted on the mounting part, the fixing part is used for placing a cable and allowing the cable to pass through the iron core part, and the fixing part can adjust the clamping degree of the cable; the fixing part is used for placing cables and allowing the cables to pass through the iron core part, the fixing part can adjust the clamping degree of the cables, can improve the fixing performance of the cables, and can be widely applied to the technical field of transformers.

Description

Current transformer

Technical Field

The utility model belongs to the technical field of the mutual-inductor and specifically relates to a current transformer.

Background

The current transformer is an instrument for converting large current on a primary side into small current on a secondary side according to the electromagnetic induction principle to measure. According to the current, the current transformer can be divided into a closed type and an open type according to the structural form. The open type current transformer is mainly applied to a power distribution system transformation project, is convenient to install, does not need to dismantle a bus, can be operated in a live mode, and does not influence normal electricity utilization of customers. When the existing open type current transformer is manufactured, an iron core and a winding are poured in a shell of the current transformer by using an insulating material, and then the current transformer is integrally cut to ensure that the size of the opening of the iron core can be well matched, so that the using and processing mode is complicated, and the cost is high; in addition, when the high-voltage bus is installed in the current transformer, the current transformer cannot be effectively fixed, and therefore a solution is required to be found.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims to provide a: a current transformer which is convenient and improves the fixing performance is provided.

The utility model adopts the technical proposal that:

a current transformer, comprising:

an iron core portion;

a winding wound around the core portion;

the casing, including installation department and fixed part, iron core portion install in the installation department, the fixed part is used for placing the cable and supplies the cable to pass through iron core portion, the adjustable tight degree of clamp to the cable of fixed part.

Further, the core portion includes a first core and a second core, and the first core and the second core form a closed magnetic circuit.

Further, the casing includes first shell and second shell, the installation department includes first mounting groove and second mounting groove, first mounting groove set up in first shell, the second mounting groove set up in the second shell, first iron core install in first mounting groove, the second iron core install in the second mounting groove.

Further, the shell is provided with a through hole, and the fixing part is arranged in the through hole.

Further, the fixed part includes supporting part, connecting portion and regulating part, connecting portion pass the supporting part with the regulating part is fixed, the supporting part is used for placing the cable, the regulating part is used for adjusting the supporting part is right the tight degree of clamp of cable.

Further, the connecting part comprises a first connecting body and a second connecting body, one end of the first connecting body and one end of the second connecting body are fixed with the shell, the other end of the first connecting body penetrates through the supporting part and is fixed with the adjusting part, and the other end of the second connecting body is fixed with the supporting part; a space for a cable to pass through is formed between the first connecting body and the second connecting body.

Further, be provided with the groove of stepping down on the casing, the groove of stepping down is used for holding the cable, the groove of stepping down with be provided with between the supporting part the space that the power cable passes through.

Further, the current transformer further comprises an elastic member disposed on an outer surface of the core portion.

Further, the current transformer further comprises a data processing module, and the data processing module is connected with the winding and contained in the shell.

Further, the data processing module comprises a sampling module and a wireless transmission module.

The utility model has the advantages that: the winding is wound on the iron core part, the shell comprises an installation part and a fixing part, the iron core part is installed on the installation part, and the iron core part is installed on the installation part in an installation mode, so that the use and processing modes of the existing scheme are simplified, the cost is reduced, and the iron core part is more convenient; the fixing part is used for placing the cable and allowing the cable to pass through the iron core part, the fixing part can adjust the clamping degree of the cable, and the fixing performance of the cable can be improved.

Drawings

Fig. 1 is a schematic diagram of a current transformer according to an embodiment of the present invention;

FIG. 2 is a schematic view of FIG. 1 after installation is complete;

FIG. 3 is a schematic view of a first housing according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a power supply bin according to an embodiment of the present invention.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.

The terms "first," "second," "third," and the like in the description and claims of this application and in the drawings are used solely to distinguish one from another and are not used to describe a particular sequence. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The invention will be further explained and explained with reference to the drawings and the embodiments in the following description.

Referring to fig. 1, 2 and 3, an embodiment of the present invention provides a current transformer including a case 1, a core portion, a winding (not shown), an elastic member 2, and a fixing member 3.

Referring to fig. 1, 2 and 3, in the embodiment of the present invention, the housing 1 includes a first housing 11, a second housing 12, a fixing portion 13, a through hole 14, a relief groove 15 and an installation portion. Alternatively, the mounting portion includes a first mounting groove 16 and a second mounting groove (not shown), the first mounting groove 16 being provided to the first housing 11, and the second mounting groove being provided to the second housing 12.

Referring to fig. 1 and 2, specifically, the first housing 11 and the second housing 12 may be attached in the vertical direction and fixed by the fixing member 3 to form a complete circle. In the embodiment of the present invention, the through hole 14 is formed by a part of the first housing 11 and a part of the second housing 12, and in other embodiments, the through hole may be formed by the first housing 11 for the cable C to pass through, and the fixing portion 13 is disposed in the through hole 14. The cable C is referred to as a high-voltage bus bar.

Referring to fig. 1, 2, 3 and 4, in the embodiment of the present invention, the fixing portion 13 is used for placing the cable C and allowing the cable C to pass through the iron core portion, and the fixing portion 13 can adjust the clamping degree of the cable C. Alternatively, the fixing portion 13 includes a supporting portion 131, a connecting portion passing through the supporting portion 131 and fixed with the adjusting portion 132, the supporting portion 131 being used for placing the cable C, and the adjusting portion 132 being used for adjusting the degree of clamping of the supporting portion 131 to the cable C. Alternatively, the supporting portion 131 is a flat plate, and the upper surface thereof is used for placing the cable C. It should be noted that the distance between the supporting surface of the supporting portion 131 for supporting the cable C and the first housing 11 can be adjusted by the adjusting portion 132, and the smaller the distance, the stronger the clamping degree of the cable C.

Referring to fig. 1, optionally, the connecting portion includes a first connecting body 133 and a second connecting body 134, one end of the first connecting body 133 and one end of the second connecting body 134 are fixed to the housing 1, the other end of the first connecting body 133 passes through the supporting portion 131 and is fixed to the adjusting portion 132, and the other end of the second connecting body 134 is fixed to the supporting portion 131; the first connecting body 133 and the second connecting body 134 have a space for the cable C to pass through. It should be noted that, two adjusting portions 132 may be provided, and are respectively fixed to the first connecting body 133 and the second connecting body 134 for adjusting the distance between both sides of the supporting portion 131 and the first housing 11.

Referring to fig. 1, 2 and 3, optionally, the receding groove 15 is disposed in the first housing 11 and may be configured to accommodate the cable C, a space through which the cable C passes is disposed between the receding groove 15 and the supporting portion 131, the size of the space through which the cable C passes may be changed by adjusting the adjusting portion 132, and a distance between the supporting portion 131 and the receding groove 15 is changed. For example, when the adjusting part 132 is tightened so that the supporting part 131 presses the cable C, and when the adjusting part 132 is loosened so that the supporting part 131 loosens the cable C, the cable C may be taken out or the cable C may be placed on the supporting part 131.

Referring to fig. 1, 2 and 3, in the embodiment of the present invention, the iron core portion is mounted on the mounting portion. Alternatively, the core part includes a first core F mounted in the first mounting groove 16 and a second core (not shown) mounted in the second mounting groove. Specifically, when the first housing 11 and the second housing 12 are aligned and mounted to each other, the first core F and the second core may form a closed magnetic circuit. Alternatively, the first core F may slide on the first mounting groove 16, and the second core may slide on the second mounting groove.

In the embodiment of the utility model provides an in, the winding twines in iron core portion. Alternatively, the winding may be wound around at least one of the first core F and the second core.

Referring to fig. 1, 2 and 3, in the embodiment of the present invention, the elastic member 2 is disposed on the outer surface of the core portion. It can be understood that the elastic member 2 is divided into a first portion 21 and a second portion (not shown), the first portion 21 is disposed on and attached to the outer surface of the first core F, and the second portion is disposed on and attached to the outer surface of the second core F. Optionally, the elastic component 2 is rubber, including but not limited to epdm, and other elastic elements or other types of rubber may be used in other embodiments for the elastic component 2. It should be noted that, when the first housing 11 and the second housing 12 are assembled, a gap between the first housing 11 and the core is smaller than a thickness of the elastic element on the core, so that the core receives a centripetal force to compensate an error gap between the first core F and the second core during the fitting of the first housing 11 and the second housing 12, so that the first core F and the second core can be tightly fitted to form a closed magnetic circuit.

As shown in fig. 1 and fig. 4, in the embodiment of the present invention, the current transformer further includes a data processing module 4, and the data processing module 4 is connected with the winding and is accommodated in the casing 1. Optionally, the data processing module 4 includes a sampling module and a wireless transmission module, the sampling module includes a power supply unit and a sampling unit, the power supply unit is connected with the sampling unit and the wireless transmission module, and the casing 1 is provided with an independently opened power supply bin D, which is convenient for replacing the power supply unit. When the iron core part and the winding convert the current of the cable C (primary line) into a sampling signal through an electromagnetic induction principle, the sampling signal is collected by the sampling unit and transmitted to secondary equipment through the wireless transmission module for monitoring, and therefore the quality of the electric energy on the primary line can be known. Optionally, an independently opened power supply bin D may be disposed on the housing 1, which is convenient for replacing the power supply unit. It should be noted that the data processing module 4 may be implemented by using an existing module, and what is protected in this application is a connection relationship and a position relationship between the data processing module 4 and other components.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.

Claims

1. A current transformer, comprising:

an iron core portion;

a winding wound around the core portion;

2. A current transformer according to claim 1, wherein: the iron core part comprises a first iron core and a second iron core, and the first iron core and the second iron core form a closed magnetic circuit.

3. A current transformer according to claim 2, wherein: the casing includes first shell and second shell, the installation department includes first mounting groove and second mounting groove, first mounting groove set up in first shell, the second mounting groove set up in the second shell, first iron core install in first mounting groove, the second iron core install in the second mounting groove.

4. A current transformer according to claim 1, characterized in that: the shell is provided with a through hole, and the fixing part is arranged in the through hole.

5. A current transformer according to claim 1, wherein: the fixing part comprises a supporting part, a connecting part and an adjusting part, the connecting part penetrates through the supporting part and the adjusting part to be fixed, the supporting part is used for placing a cable, and the adjusting part is used for adjusting the clamping degree of the supporting part to the cable.

6. A current transformer according to claim 5, characterized in that: the connecting part comprises a first connecting body and a second connecting body, one end of the first connecting body and one end of the second connecting body are fixed with the shell, the other end of the first connecting body penetrates through the supporting part and is fixed with the adjusting part, and the other end of the second connecting body is fixed with the supporting part; a space for a cable to pass through is formed between the first connecting body and the second connecting body.

7. A current transformer according to claim 6, wherein: the cable protection device is characterized in that a yielding groove is formed in the shell and used for accommodating a cable, and a space for the cable to pass through is formed between the yielding groove and the supporting part.

8. A current transformer according to claim 1, wherein: the current transformer further comprises an elastic member disposed on an outer surface of the core portion.

9. A current transformer according to claim 1, wherein: the current transformer further comprises a data processing module, and the data processing module is connected with the winding and contained in the shell.

10. A current transformer according to claim 9, wherein: the data processing module comprises a sampling module and a wireless transmission module.