CN211376559U

CN211376559U - Circuit breaker

Info

Publication number: CN211376559U
Application number: CN202020235343.7U
Authority: CN
Inventors: 王忠斌; 丰带君; 胡刚; 张颖; 陈新明
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-08-28
Anticipated expiration: 2030-02-28

Abstract

The utility model provides a circuit breaker relates to low-voltage circuit breaker technical field. The circuit breaker includes: the circuit breaker comprises a circuit breaker body and a monitoring module; the monitoring module sets up on the circuit breaker body, and the monitoring module includes: the transformer, the circuit board and the conducting system; the conductive system comprises a splicing end and a wiring end; the circuit breaker body comprises an electric power wire inlet end and an electric power wire outlet end; the mutual inductor is positioned between the splicing end and the wiring end and is connected with the circuit board; the splicing end is connected with an electric power inlet end or an electric power outlet end. The monitoring module is arranged, so that real-time monitoring of various data information in the power grid can be realized, and the application of the circuit breaker is wider. In addition, in this application embodiment, monitoring module mountable also can install in the electric power outlet terminal of circuit breaker body in the electric power inlet terminal of circuit breaker body, and wherein, it is comparatively convenient to install when installing in the electric power inlet terminal of circuit breaker body, walks the line comparatively simply, can effectively improve the installation effectiveness.

Description

Circuit breaker

Technical Field

The utility model relates to a low voltage circuit breaker technical field particularly, relates to a circuit breaker.

Background

The ubiquitous power internet of things is that modern information technologies such as mobile interconnection and artificial intelligence and advanced communication technologies are fully applied around all links of a power system, and all links (power generation, power transmission, power transformation, power distribution, power utilization users, equipment connection, monitoring and the like) of the power system are interconnected and man-machine interaction is achieved. Distribution is an extremely important link in the generation, transmission and use of electricity, a distribution system comprises a transformer and various high-low voltage electrical equipment, and a low-voltage circuit breaker is an electrical appliance with a large using amount.

Generally, a circuit breaker is composed of a contact system, an arc extinguishing system, an operating mechanism, a trip, a case, and the like. It can be used to switch on and off the load circuit, and also to control the motor which is not started frequently. Its function is equal to the function sum of some or all of the electric appliances such as knife switch, overcurrent relay, voltage-loss relay, thermal relay and leakage protector. The device has the advantages of various protection functions (overload, short circuit, under-voltage protection and the like), adjustable action value, high breaking capacity, convenience in operation, safety and the like.

However, the existing circuit breaker usually only has a protection effect on a circuit, is relatively single in function, and cannot monitor various data information in a power grid, so that the application and the expansion of the circuit breaker are limited to a certain extent.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the not enough among the above-mentioned prior art, provide a circuit breaker to solve the circuit breaker function singleness that exists among the prior art, can't realize the problem of data information monitoring.

In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:

the embodiment of the application provides a circuit breaker body, includes: the circuit breaker comprises a circuit breaker body and a monitoring module;

the monitoring module sets up on the circuit breaker body, the monitoring module includes: the transformer, the circuit board and the conducting system;

the conductive system comprises a splicing end and a wiring end; the circuit breaker body comprises an electric power wire inlet end and an electric power wire outlet end;

the mutual inductor is positioned between the splicing end and the wiring end and is connected with the circuit board;

the splicing end is connected with the electric power wire inlet end or the electric power wire outlet end.

Optionally, the circuit board includes a power line and a signal line, the power line is connected to a power end of the circuit breaker body, the signal line is connected to the splicing end and the wiring end, and a current flows through a conductive terminal of the transformer and then is connected to the conductive terminal.

Optionally, if the splicing end is connected to the power line inlet end, the power end of the circuit breaker body is the wiring end, the splicing end, or the power line inlet end.

Optionally, the signal line is connected to the splice end.

Optionally, if the splicing end is connected with the electric power outlet end, the power end of the circuit breaker body is the electric power inlet end.

Optionally, the signal line is connected to the terminal.

Optionally, the power line is connected to a power end of the circuit breaker body, the signal line is connected to the splicing end and the wiring end, and a current flows through any phase of the conductive terminals of the transformer.

Optionally, the number of the signal line is one, and the signal line is connected to any one phase pole of the splicing end and the terminal, which is one of the conductive terminals after the current flows through the transformer.

Optionally, the number of the signal lines is two, one of the signal lines is connected to any one of the splicing end and the terminal, and the current flows through any one of the conductive terminals of the transformer, and the other signal line is connected to the neutral pole of the circuit breaker body.

Optionally, the instrument transformer is a metering instrument transformer.

The beneficial effect of this application is:

the application provides a circuit breaker, this circuit breaker includes: the circuit breaker comprises a circuit breaker body and a monitoring module; the monitoring module sets up on the circuit breaker body, and the monitoring module includes: the transformer, the circuit board and the conducting system; the conductive system comprises a splicing end and a wiring end; the circuit breaker body comprises an electric power wire inlet end and an electric power wire outlet end; the mutual inductor is positioned between the splicing end and the wiring end and is connected with the circuit board; the splicing end is connected with an electric power inlet end or an electric power outlet end. The monitoring module is arranged, so that real-time monitoring of various data information in the power grid can be realized, and the application of the circuit breaker is wider.

In addition, in this application embodiment, monitoring module can install in the electric power inlet wire end of circuit breaker body, also can install in the electric power outlet wire end of circuit breaker body, and wherein, the installation is comparatively convenient when installing in the electric power inlet wire end of circuit breaker body, walks the line comparatively simple, can effectively improve the installation effectiveness.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a circuit breaker monitoring module according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a circuit breaker according to an embodiment of the present disclosure;

fig. 3 is an isometric view of a circuit breaker provided by an embodiment of the present application;

fig. 4 is a schematic structural diagram of another circuit breaker provided in an embodiment of the present application;

fig. 5 is an isometric view of another circuit breaker provided by an embodiment of the present application;

fig. 6 is a wiring diagram of another circuit breaker according to an embodiment of the present application.

Icon: 1-a circuit breaker body; 11-a feed-in end; 12-an outlet terminal; 2-a monitoring module; 21-a mutual inductor; 22-a circuit board; 22 a-power line; 22 b-signal lines; 23-an electrically conductive system; 23 a-terminal; 23 b-splice end.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The circuit breaker provided by the present application is illustrated by a number of examples as follows.

Fig. 1 is a schematic structural diagram of a circuit breaker monitoring module according to an embodiment of the present application. The circuit breaker may include: the circuit breaker comprises a circuit breaker body and a monitoring module; the monitoring module is disposed on the circuit breaker body, and the specific arrangement of the monitoring module and the circuit breaker body can be understood by referring to the following description of the specific embodiments.

Alternatively, as shown in fig. 1, the monitoring module 2 may include: a mutual inductor 21, a circuit board 22 and a conducting system 23; the conductive system 23 comprises a splicing end 23b and a terminal end 23 a; the circuit breaker body 1 comprises an electric power inlet end 11 and an electric power outlet end 12; the transformer 21 is located between the splicing end 23b and the terminal 23a, and the transformer 21 is connected with the circuit board 22. The splice terminal 23b is connected to the power inlet terminal 11 or the power outlet terminal 12. The splicing end 23b can be connected to the power inlet terminal 11 or the power outlet terminal 12, and can be understood by referring to the following embodiments and the accompanying drawings.

Alternatively, the transformer 21 may be connected to a corresponding terminal (interface) on the wiring board 22 through a terminal on a lead wire on the secondary side thereof. Alternatively, the transformer 21 may be soldered (fixed) to the circuit board 22 via a secondary-side lead wire thereof. The connection mode of the transformer 21 and the circuit board 22 is not particularly limited in this embodiment. Alternatively, the circuit board 22 and the transformer 21 may perform signal transmission through the outgoing lines connected to each other, that is, the circuit board 22 may obtain the transformer parameters through the outgoing lines connected to the transformer 21. Wherein, the transformer parameters may include: voltage, frequency, power, etc.

Optionally, the splicing end 23b in the conductive system 23 may be connected to the power line inlet end 11 of the circuit breaker body, or may be connected to the power line outlet end 12 of the circuit breaker body, so that the monitoring module 2 may be installed on the power line inlet end 11 of the circuit breaker body, or may be installed on the power line outlet end 12 of the circuit breaker body.

It should be noted that, the circuit breaker body refers to a complete conventional circuit breaker, such as a thermomagnetic circuit breaker or an electronic circuit breaker. In this embodiment, the monitoring module 2 is installed on a complete conventional circuit breaker.

Optionally, as shown in fig. 1, the circuit board 22 includes a power line 22a and a signal line 22b, the power line 22a is connected to a power supply end of the circuit breaker body, and the signal line 22b is connected to a conductive terminal after the current flows through the transformer 21 in the splicing end 23b and the terminal 23a of the conductive system 23.

It should be noted that, the power line 22a is connected to the power end of the circuit breaker body, so as to ensure that the monitoring module 2 can still be powered when the circuit breaker body is disconnected, thereby ensuring the normal operation of the monitoring module 2. In addition, the signal wire 22b is connected with the conductive terminal after the current flows through the mutual inductor 21, so that the acquired position signal of the circuit breaker is transmitted to the power grid through the conductive terminal to be received by other circuit breakers, and whether the position signal is successfully transmitted is self-checked; alternatively, the specific connection manner of the power line 22a and the signal line 22b is described in detail in the following embodiments, and can be understood with reference to the following embodiments.

Fig. 2 is a schematic structural diagram of a circuit breaker according to an embodiment of the present disclosure; fig. 3 is an isometric view of a circuit breaker according to an embodiment of the present application. Alternatively, referring to fig. 2 and 3, in some embodiments, the monitoring module 2 may be mounted at the line inlet 11 of the circuit breaker body 1, that is, the splicing end 23b in the conductive system 23 of the monitoring module 2 is connected with the power line inlet 11 of the circuit breaker body 1. The monitoring module 2 is installed at the electric power inlet wire end 11 of the circuit breaker body 1, so that the monitoring module 2 is convenient to install and simple in wiring. If the splicing end 23b is connected to the power line inlet end 11 of the circuit breaker body 1, the power end of the circuit breaker body 1 may be the terminal 23a, the splicing end 23b of two conductive terminals of the conductive system 23, or the power line inlet end 11 of the circuit breaker body 1.

It should be noted that, the splicing end 23b is also the end connected to the circuit breaker body 1, and it can be known from the following embodiments that, no matter the monitoring module 2 is installed at the power inlet end 11 of the circuit breaker body 1 or at the power outlet end 12 of the circuit breaker body 1, the monitoring module 2 is connected to the power inlet end 11 of the circuit breaker body 1 or connected to the power outlet end 12 of the circuit breaker body 1 through the splicing end 23b in the conductive system 23.

In some embodiments, when the monitoring module 2 is installed at the power inlet end 11 of the circuit breaker body 1, the power end of the circuit breaker body 1 may be any one of the following three terminals: the splicing end 23b, the terminal 23a, or the power inlet end 11 of the circuit breaker body 1. The power cord 22a on the circuit board 22 can be connected to the splice end 23b, or to the terminal 23a, or to the power inlet end 11 of the circuit breaker body 1. Fig. 3 shows a schematic diagram of the connection of the power line 22a and the terminal 23a, and the schematic diagram of the connection of the power line 22a and the splicing end 23b, and the connection of the power line 22a and the power line inlet end 11 of the circuit breaker body 1 are not illustrated in a list.

Alternatively, as shown in fig. 3, when the monitoring module 2 is connected to the power inlet terminal 11 of the circuit breaker body 1, the conductor terminal after the current flows through the transformer 21 is the splicing terminal 23b in the conducting system 23, and at this time, the signal line 22b on the circuit board 22 is connected to the splicing terminal 23 b.

Fig. 4 is a schematic structural diagram of another circuit breaker provided in an embodiment of the present application; fig. 5 is an isometric view of another circuit breaker provided by an embodiment of the present application; 6 is another circuit breaker's wiring diagram that this application embodiment provided. Alternatively, referring to fig. 4, 5 and 6, in some embodiments, the monitoring module 2 may be mounted to the outlet 12 of the circuit breaker body 1, that is, the splicing end 23b in the conductive system 23 of the monitoring module 2 is connected to the power outlet 12 of the circuit breaker body 1. It should be noted that, compared to the monitoring module 2 being installed at the wire inlet end 11 of the circuit breaker body 1, when being installed at the wire outlet end 12, the installation and routing are complicated, and the power line 22a needs to be connected to the wire inlet end 11 of the circuit breaker body 1 by bypassing the bottom of the circuit breaker body 1. Alternatively, if the splicing end 23b is connected to the power outlet end 12 of the circuit breaker body 1, the power end of the circuit breaker body 1 is the power inlet end 11 of the circuit breaker body 1.

As shown in fig. 6, when the monitoring module 2 is mounted on the outlet terminal 12 of the circuit breaker body 1, the power line 22a of the wiring board 22 is connected to the power inlet terminal 11 of the circuit breaker body 1. Therefore, under the condition that the circuit breaker body 1 is disconnected, power can still be supplied to the monitoring module 2, and normal operation of the monitoring module 2 is guaranteed.

Alternatively, as shown in fig. 5, when the monitoring module 2 is installed at the outlet 12 of the circuit breaker body 1, the conductive terminal after the current flows through the transformer 21 is the terminal 23a in the conductive system 23, and at this time, the signal line 22b on the circuit board 22 is connected to the terminal 23a in the two conductive terminals.

Optionally, the power line 22a is connected to a power supply terminal of the circuit breaker body 1, and the signal line 22b is connected to any one of the splice terminal 23b and the terminal 23a, which is one of the conductive terminals after the current flows through the transformer 21.

It should be noted that, in this embodiment, the circuit breaker is a three-phase pole circuit breaker, and the power supply end of the circuit breaker body 1 is a three-phase pole, that is, includes three connection terminals, and correspondingly, the power supply lines 22a are three, and the power supply lines 22a are connected with the power supply end of the circuit breaker body 1, that is, each power supply line in the power supply lines 22a is connected with the power supply end connection terminal of its corresponding phase pole. For example: the first power line is connected with the phase A electrode of the power supply end, the second power line is connected with the phase B electrode of the power supply end, and the third power line is connected with the phase C electrode of the power supply end.

Alternatively, the signal line 22b is connected to any one of the terminals of the splicing end 23b and the terminal 23a, after the current flows through the transformer 21. For example: the signal line 22B is connected with the phase A pole of the splicing end, or the signal line 22B is connected with the phase B pole of the splicing end, or the signal line 22B is connected with the phase C pole of the splicing end, or the signal line 22B is connected with the phase A pole of the terminal, or the signal line 22B is connected with the phase B pole of the terminal, or the signal line 22B is connected with the phase C pole of the terminal, and the like.

Alternatively, as shown in fig. 1, there are a plurality of transformers 21, each of the transformers 21 is located between the splicing end 23b and the terminal 23a of the conductive system 23, and each of the transformers 21 is further connected to the circuit board 22. In some embodiments, the monitoring module 2 may include a set of transformers and a set of circuit boards 22, wherein, as shown in fig. 1, three transformers may be included in a set of transformers, and one circuit board may be included in a set of circuit boards, each transformer being located between the splicing end 23b and the terminal end 23a of the conductive system 23, and each transformer being further connected to the circuit board 22. Of course, fig. 1 only shows an exemplary possible structure form of the monitoring module 2, in practical applications, the monitoring module 2 is not limited to include a group of transformers, and a group of transformers may not be limited to include 3 transformers, and of course, the circuit board 22 is also not limited to include only one group, and a group is not limited to include only one circuit board. Can be adjusted according to actual requirements.

Alternatively, in the case of a three-phase pole breaker, the signal line 22b is one, and the signal line 22b is connected to any one of the phase poles of the splicing end 23b and the terminal 23a, which are conductive terminals after the current flows through the transformer 21.

Alternatively, as shown in fig. 1, the signal line 22b on the circuit board 22 in the monitoring module 2 is only one. In some embodiments, when used in a three-phase pole circuit breaker (the power terminals of the circuit breaker comprise three phases, a, B, C), only one signal line 22B for the circuit breaker body 1 is required, as shown in fig. 1, which can be connected in the splicing end 23B and the terminal 23a, with current flowing on either phase of the conductive terminals behind the transformer 21.

Alternatively, in the case of a four-phase circuit breaker, two signal lines 22b are provided, wherein one signal line 22b is connected to one of the splice end 23b and the terminal 23a, and one of the conductive terminals after the current flows through the transformer 21 is connected to the phase pole, and the other signal line 22b is connected to the neutral pole of the circuit breaker body 1.

In other embodiments, when used in a four-phase circuit breaker (the power terminals of the circuit breaker include three phases, a, B, C, and N poles), the signal line 22B may include two signal lines, one signal line 22B being connected to one of the splice terminal 23B and the terminal 23a, and any one of the conductive terminals after the current flows through the transformer 21, and the other signal line 22B being connected to the neutral pole (N pole) of the circuit breaker body 1.

Optionally, the transformer 21 used in the above embodiments of the present application is a metering transformer. On the one hand, the circuit breaker can control the metering transformer to obtain the voltage and current output signals of the electric equipment, and the working state of the circuit breaker is switched according to the voltage and current signals. On the other hand, the magnetic core of the metering transformer can be an ultra-fine synthetic magnetic core, so that the current and voltage information induced by the metering transformer is more accurate, the current and voltage information of the electric equipment is acquired through the metering transformer, the current and voltage information is sent to the circuit board 22, the current and voltage information is processed through the circuit board 22, and accurate monitoring and analysis of the data of the electric equipment can be realized.

To sum up, the circuit breaker that this application embodiment provided includes: the circuit breaker comprises a circuit breaker body and a monitoring module; the monitoring module sets up on the circuit breaker body, and the monitoring module includes: the transformer, the circuit board and the conducting system; the conductive system comprises a splicing end and a wiring end; the circuit breaker body comprises an electric power wire inlet end and an electric power wire outlet end; the mutual inductor is positioned between the splicing end and the wiring end and is connected with the circuit board; the splicing end is connected with an electric power inlet end or an electric power outlet end. The monitoring module is arranged, so that real-time monitoring of various data information in the power grid can be realized, and the application of the circuit breaker is wider.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A circuit breaker, comprising: the circuit breaker comprises a circuit breaker body and a monitoring module;

2. The circuit breaker according to claim 1, wherein the circuit board includes a power line and a signal line, the power line is connected to a power supply terminal of the circuit breaker body, the signal line is connected to the splicing terminal and the terminal, and a current flows through a conductive terminal of the transformer.

3. The circuit breaker of claim 2, wherein if the splicing end is connected to the power inlet end, the power end of the circuit breaker body is the terminal, the splicing end, or the power inlet end.

4. The circuit breaker of claim 3, wherein the signal line is connected to the splice end.

5. The circuit breaker of claim 2, wherein the power end of the circuit breaker body is the power inlet end if the splice end is connected to the power outlet end.

6. The circuit breaker of claim 5, wherein the signal line is connected to the terminal.

7. The circuit breaker according to claim 2, wherein the power line is connected to a power terminal of the circuit breaker body, and the signal line is connected to any one of the terminals of the splicing end and the terminal, through which current flows, of the current transformer.

8. The circuit breaker according to any one of claims 2-7, wherein the signal line is one, and the signal line is connected to any one of the terminals of the splicing end and the terminal, which are electrically conductive terminals after current flows through the transformer.

9. The circuit breaker according to any one of claims 2-7, wherein there are two signal lines, wherein one of the signal lines is connected to one of the splicing end and the terminal, and one of the conductive terminals after the current flows through the transformer is connected to a neutral pole of the circuit breaker.

10. The circuit breaker of any one of claims 1-7, wherein the transformer is a metering transformer.