CN215418052U

CN215418052U - Circuit breaker

Info

Publication number: CN215418052U
Application number: CN202121648910.2U
Authority: CN
Inventors: 戴明军; 刘万里; 施谦; 章龙; 李灵; 周健; 南寅; 南添
Original assignee: Tianjin Svrui Intelligent Electrical Co Ltd
Current assignee: Tianjin Svrui Intelligent Electrical Co Ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-01-04
Anticipated expiration: 2031-07-20

Abstract

The utility model discloses a circuit breaker, which comprises a circuit breaker body and at least one electronic module which is arranged on the side surface of the circuit breaker body in a pluggable manner, wherein the electronic module is provided with a smoke detection device or/and a pyrolytic particle type detection device or/and a light brightness detection device. The smoke detection device or/and the pyrolytic particle type detection device or/and the light brightness detection device are/is arranged on the electronic module on the side surface of the circuit breaker body, and part of the smoke detection device or/and the pyrolytic particle type detection device or/and the light brightness detection device is higher than the upper cover, so that the smoke or the pyrolytic particles can be detected conveniently, when the concentration of the pyrolytic particles or the smoke exceeds a certain threshold value, a power supply is cut off, the occurrence of an electrical fire is prevented, and the effect of preventing the fire from happening in the bud can be achieved.

Description

Circuit breaker

Technical Field

The utility model relates to the technical field of low-voltage electric appliances, in particular to a circuit breaker.

Background

At present, most of common electrical fires in a power distribution system are caused by arc faults due to circuit insulation damage, the arc faults are not easy to detect, and a traditional circuit breaker does not have an arc fault protection function and cannot cut off fault circuits in time; therefore, in the case of an arc fault, an electrical fire is very easily developed.

Therefore, a circuit breaker with smoke detection and fire protection functions is provided, a smoke detector is arranged in the circuit breaker, when an electrical fault occurs, and when the smoke detector detects that the smoke concentration exceeds a certain threshold value, an alarm signal is sent out or a tripping signal is sent to a tripper of the circuit breaker to cut off a power supply, so that the situation of fire is prevented from spreading due to aggravation.

However, if all circuit breakers in the power distribution system are replaced, the cost is high, and how to realize the above functions on the premise that the existing circuit breakers are not replaced becomes a technical problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above problems, the utility model provides a circuit breaker, on the basis of the original circuit breaker, a smoke detection device is arranged on a plug electronic module through a newly added plug electronic module, so that the cost is saved, the replacement and the maintenance are convenient, and the technical problems are overcome, wherein the specific scheme is as follows:

the utility model provides a circuit breaker, includes circuit breaker body and at least one can set up in with pulling out the electronic module of inserting the side of circuit breaker body, last smog detection device or/and the pyrolysis particle formula detection device or/and the luminance detection device of being provided with of electronic module.

Preferably, the electronic module comprises an insulating shell, a ventilation cover higher than other parts is arranged on the insulating shell, and the smoke detection device or/and the pyrolytic particle type detection device or/and the light brightness detection device partially extend into the ventilation cover.

Preferably, the smoke detection device or/and the pyrolytic particle type detection device or/and the light brightness detection device are/is arranged on any surface of the electronic module, which is not in contact with the circuit breaker body.

Preferably, the vent cover is provided with at least two holes.

Preferably, the electronic module includes an insulating housing, an electronic circuit board and a base, the insulating housing and the base enclose to form a cavity, and the electronic circuit board is located in the cavity.

Preferably, the smoke detection device or/and the pyrolysis particle type detection device or/and the light brightness detection device are/is arranged on the electronic circuit board.

Preferably, the electronic module is a metering module or/and a protection module or/and a communication module.

Preferably, the electronic module is inserted from the front of the circuit breaker or inserted from the side of the circuit breaker.

Preferably, the circuit breaker body comprises a shell and an internal element positioned in the shell, the internal element comprises an electronic controller, and the smoke detection device or/and the pyrolysis particle type detection device or/and the light brightness detection device are/is in wired connection or wireless connection with the electronic controller.

Preferably, when the detected physical quantity or value sent by the smoke detection device or/and the pyrolysis particle type detection device or/and the light brightness detection device reaches a preset threshold value, the electronic controller sends a tripping signal to the tripper to cut off a power supply or sends an alarm signal to alarm.

Preferably, the internal component further comprises an arc extinguishing chamber, a static contact system, a movable contact system and an operating mechanism.

Preferably, the wired connection mode at least comprises one of power line carrier communication HPLC, RS485, CAN, DeviceNet, Profibus, I2C and SPI; the wireless communication mode at least comprises one of 2.5G/4G communication 5G, Bluetooth and WIFI.

The utility model has the following beneficial effects:

1. the electronic module is provided with the smoke detection device or/and the pyrolytic particle type detection device or/and the light brightness detection device, and the electronic module can be arranged on the side surface of the circuit breaker in a pluggable manner, so that the electronic module is convenient to install, maintain and replace and can be suitable for various types of circuit breakers;

2. the pyrolysis particle type detection device can detect the concentration of particles and gas generated by the overheating decomposition of a circuit breaker, a cable, a switch and the like, detect the generation of visible smoke, and cut off a power supply when the concentration of the pyrolysis particles exceeds a certain threshold value so as to prevent the occurrence of an electrical fire and achieve the effect of preventing the occurrence of accidents in the bud.

3. The smoke detection device or/and the pyrolysis particle type detection device or/and the brightness detection device are/is arranged on the electronic module, and part of the smoke detection device or/and the pyrolysis particle type detection device or/and the brightness detection device is higher than the upper cover, so that the smoke detection device or the pyrolysis particle detection device is convenient for detecting smoke or pyrolysis particles, and is integrated with the electronic module into a whole, so that the space utilization is reasonable, and the volume is small.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a circuit breaker according to a first embodiment of the present invention;

fig. 2 is an exploded view of a circuit breaker according to a first embodiment of the present invention;

fig. 3 is an exploded view of a circuit breaker according to a second embodiment of the present invention;

fig. 4 is a schematic structural diagram of a circuit breaker according to a second embodiment of the present invention;

fig. 5 is a schematic structural view of the electronic module in the process of being pulled out from the circuit breaker body according to the second embodiment of the present invention.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific configuration and algorithm set forth below, but rather covers any modification, replacement or improvement of elements, parts without departing from the spirit of the utility model.

Example one

As shown in fig. 1 and fig. 2, the present embodiment specifically discloses a circuit breaker, which includes a circuit breaker body 10 and at least one electronic module 20 that is disposed on a side surface of the circuit breaker body in a pluggable manner, where the circuit breaker body 10 includes a housing, an electronic controller, and internal components disposed in the housing, the internal components include a moving contact system, a stationary contact system, an arc extinguish chamber, a release, and an operating mechanism, the operating mechanism includes an operating handle, and the operating handle extends out of the housing from a front surface of the circuit breaker body; the electronic module 20 is provided with a pyrolytic particle detection device 30.

Specifically, referring to fig. 2, the electronic module 20 includes an insulating housing 21 and an electronic circuit board 22, the insulating housing 21 includes a cover 211 and a base 212, the cover 211 and the base 212 enclose a cavity, the electronic circuit board 22 is disposed in the cavity, the pyrolytic particle detection apparatus 30 is disposed on the electronic circuit board 22, in this embodiment, the pyrolytic particle detection apparatus 30 is connected to the electronic circuit board 22 by soldering, the cover 211 is disposed with a ventilation hood 21a higher than other portions, a portion of the pyrolytic particle detection apparatus 30 extends into the ventilation hood 21a, the electronic circuit board 22 is disposed with a pin 221, the pin 221 is disposed on the electronic circuit board 22, and the pin 221 and the pyrolytic particle detection apparatus 30 are disposed on two opposite sides of the electronic circuit board 22, the electronic circuit board 22 is connected to the main circuit board of the circuit breaker body 10 through pins 221.

In this embodiment, the particle-type pyrolysis detection device 30 is disposed on the side of the electronic module 20, the ventilation hood 21a is located on the side of the cover 211, the ventilation hood 21a is a convex, the other portions of the cover 211 are hemispherical protrusions, a plurality of holes are disposed on the ventilation hood 21a, so that smoke or pyrolysis particles can enter the cavity conveniently, when pyrolysis particles enter the cavity from the holes, the particle-type pyrolysis detection device 30 can quickly detect the concentration of the pyrolysis particles and send the detected physical quantity or physical value to the electronic controller, and the electronic controller sends a trip signal to a trip unit of the circuit breaker according to the size of the physical quantity or physical value when a preset threshold value is reached, so that the trip unit operates to cut off the circuit, or sends an alarm signal.

In this embodiment, the electronic module 20 is a metering module or/and a protection module or/and a communication module, the electronic module 20 is directly plugged from the side of the circuit breaker body 10, the contact pin 221 is perpendicular to the side of the circuit breaker body 10, and the plugging direction of the electronic module 20 is consistent with the extending direction of the contact pin 221.

The electronic controller with pyrolysis particle formula detection device wired connection or wireless connection CAN be connected through following any wired communication mode, wired communication mode includes power line carrier communication HPLC, RS485, CAN, DeviceNet, Profibus, I2C, SPI, CAN also connect through following any wireless communication mode, wireless communication mode includes 2.5G/4G communication 5G, bluetooth, WIFI.

The pyrolysis particle type detection device in the embodiment can detect the concentration of particles and gas generated by overheating decomposition of the circuit breaker, detect the generation of visible smoke, and cut off a power supply when the concentration of the pyrolysis particles exceeds a certain threshold value so as to prevent an electrical fire from happening and achieve the effect of preventing the fire from happening in advance.

Example two

As shown in fig. 3 to 5, the circuit breaker of the present embodiment discloses another structure, which is different from the first embodiment in that the pyrolytic particle detection apparatus 30 is disposed on the front surface of the electronic module 20, but the pyrolytic particle detection apparatus 30 may also be disposed on the rear surface, the upper surface and the bottom surface of the electronic module 20 as long as the surface of the electronic module 20 contacting with the circuit breaker body 10 is avoided, accordingly, the ventilation cover 21a is disposed on the front surface of the cover 211, the pyrolytic particle detection apparatus 30 is fixed on the electronic circuit board 22, and a portion of the pyrolytic particle detection apparatus 30 extends into the ventilation cover 21a for facilitating detection.

In this embodiment, the electronic module 20 is plugged from the front direction of the circuit breaker body 10, the plug pin 221 includes a plugging section parallel to the side surface of the circuit breaker body 10 and a connection section perpendicular to the plugging section, the plugging direction of the electronic module 20 is consistent with the extending direction of the plugging section of the plug pin 221, fig. 5 is a schematic diagram of the process of plugging the electronic module 20 from the circuit breaker body 10, and it can be seen from the diagram that the electronic module 20 is plugged or unplugged from the front side of the circuit breaker body 10.

In other embodiments, the circuit breaker may further control the release or the alarm to alarm according to the smoke concentration or the light brightness by the smoke detection device or the light brightness detection device, and the principle is the same as that of the first embodiment, and is not described herein again.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The present embodiments are to 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 which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A circuit breaker comprises a circuit breaker body (10) and at least one electronic module (20) which is arranged on the side surface of the circuit breaker body in a pluggable mode, and is characterized in that a smoke detection device or/and a pyrolytic particle type detection device or/and a light brightness detection device (30) are arranged on the electronic module (20).

2. The circuit breaker according to claim 1, characterized in that said electronic module (20) comprises an insulating casing (21), said insulating casing (21) being provided with a ventilation hood (21 a) higher than the other parts, said smoke detection means or/and pyrolytic particle type detection means or/and light brightness detection means (30) partially protruding inside said ventilation hood (21 a).

3. The circuit breaker according to claim 1 or 2, characterized in that said smoke detection means or/and pyrolytic particle detection means or/and light brightness detection means (30) are provided on any face of said electronic module (20) not in contact with said circuit breaker body (10).

4. The circuit breaker according to claim 2, characterized in that said vented shield (21 a) is provided with at least two holes.

5. The circuit breaker according to claim 2, wherein the electronic module (20) further comprises an electronic circuit board (22), and the insulating housing (21) comprises a cover (211) and a base (212), the cover (211) and the base (212) enclosing a cavity, and the electronic circuit board (22) being located in the cavity.

6. The circuit breaker according to claim 5, characterized in that said smoke detection means or/and pyrolytic particle type detection means or/and light brightness detection means (30) are provided on said electronic circuit board (22).

7. The circuit breaker according to claim 1, characterized in that said electronic module (20) is a metering module or/and a protection module or/and a communication module.

8. The circuit breaker according to claim 1, characterized in that said electronic module (20) is provided to be plugged from the front of said circuit breaker or from the side of said circuit breaker.

9. The circuit breaker according to claim 1, characterized in that said circuit breaker body (10) comprises a housing and internal elements inside the housing, said internal elements comprising an electronic controller, said smoke detection means or/and pyrolytic particle type detection means or/and light brightness detection means (30) being wired or wirelessly connected to said electronic controller.

10. The circuit breaker according to claim 9, characterized in that when the detected physical quantity or value sent by the smoke detection device or/and thermal particle detection device or/and light brightness detection device (30) reaches a preset threshold value, the electronic controller sends a trip signal to a release of the circuit breaker, cuts off the power supply, or sends an alarm signal to alarm.

11. The circuit breaker of claim 9, wherein the internal components further comprise an arc chute, a stationary contact system, a movable contact system, and an operating mechanism.

12. The circuit breaker of claim 9, wherein the wired connection comprises at least one of power line carrier communication (HPLC), RS485, CAN, DeviceNet, Profibus, I2C, SPI; the wireless communication mode at least comprises one of 2.5G/4G communication 5G, Bluetooth and WIFI.