CN219144000U

CN219144000U - Circuit breaker

Info

Publication number: CN219144000U
Application number: CN202320134210.4U
Authority: CN
Inventors: 周敏琛; 朱永清; 王晖
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2023-01-13
Filing date: 2023-01-13
Publication date: 2023-06-06
Anticipated expiration: 2033-01-13

Abstract

A circuit breaker belongs to the technical field of piezoelectric devices. The circuit breaker comprises a shell, wherein a contact system is arranged in the shell, a face mask, an operating mechanism and a controller are arranged on the shell, and the face mask covers the operating mechanism and the controller; the controller controls the operating mechanism to drive the contact system to act; the characteristics are that: the circuit breaker also comprises a conversion contact device and a sampling module, wherein a current divider is arranged on a main loop of the circuit breaker, a wire inlet end of the conversion contact device is electrically connected with a sampling output end of the current divider, a wire outlet end of the conversion contact device is electrically connected with the sampling module, and the sampling module is in signal connection with the controller; the switch contact means comprises an operating head which can be operated from the outside of the mask. The advantages are that: the switching contact device is operated on the front side of the circuit breaker, so that the on-off of the sampling module and the main loop can be realized, and the operation is simple.

Description

Circuit breaker

Technical Field

The utility model belongs to the technical field of piezoelectric devices, and particularly relates to a circuit breaker.

Background

The low-voltage frame breaker is a low-voltage electrical equipment component with larger capacity, is mainly used in industrial electrical systems, can ensure the connection and disconnection of a circuit under rated load, can automatically disconnect the circuit in abnormal states (such as overload, short circuit, undervoltage and the like) of the circuit, and can completely isolate the load from a power supply by separating a movable contact and a static contact.

The circuit breaker needs to measure a voltage signal for diagnosing an operating state of the circuit breaker. The voltage sampling component is usually required to be electrically connected with the main circuit for measurement, and the working voltage of the main circuit is directly measured, so that the voltage value is higher, and in the process of factory inspection or the process of debugging a circuit breaker in a distribution line by a user, in order to ensure the safety, the sampling circuit board is allowed to be disconnected with the main circuit before inspection or debugging according to national standard regulations.

Disclosure of Invention

The utility model aims to provide a circuit breaker, which is provided with a switching contact device on the circuit breaker, and the switching contact device is operated on the front surface of the circuit breaker, so that the on-off of a sampling circuit board and a main circuit can be realized, and the operation is simple.

The utility model aims at completing the task, namely a circuit breaker, which comprises a shell and a face shield, wherein a contact system is arranged in the shell, an operating mechanism and a controller are arranged on the shell, and the face shield covers the operating mechanism and the controller and is arranged in a matching way with the shell; the controller controls the operating mechanism to drive the contact system to act; the circuit breaker also comprises a conversion contact device and a sampling module, wherein a current divider is arranged on a main loop of the circuit breaker, an inlet end of the conversion contact device is electrically connected with a sampling output end of the current divider, an outlet end of the conversion contact device is electrically connected with the sampling module, and the sampling module is in signal connection with a controller; the switch contact means comprises an operating head which can be operated from the outside of the mask.

In a specific embodiment of the present utility model, the mask is provided with a mating hole, and the operating head extends through the mating hole.

In another specific embodiment of the present utility model, the housing is formed by splicing a base and a bottom plate, and the mask, the operating mechanism, the controller, the sampling module and the switch contact device are all mounted on the base.

In another specific embodiment of the present utility model, a sampling circuit board is disposed in the sampling module, and the sampling circuit board processes the collected voltage signal and feeds back to the controller.

In yet another embodiment of the utility model, the switch contact device further comprises a mounting base, wherein the switch contact device is mounted on the mounting base, and the mounting base is fixedly mounted on the base.

In yet another embodiment of the utility model, the switch contact means is mounted directly to the base.

In a further specific embodiment of the utility model, the operating mechanism is located on one side of the controller, the sampling module and the switch contact means are located on the other side of the controller, and the sampling module is located above the switch contact means.

In a further embodiment of the utility model, the sampling module is integrated within the controller.

The utility model has the beneficial effects that due to the adoption of the structure, the utility model has the following advantages: the switching contact device is additionally arranged, the switching contact device can be operated on the front surface of the circuit breaker, and the sampling module and the main loop can be switched on and off by operating the switching contact device, so that the operation is simple.

Drawings

Fig. 1 is a schematic view of the overall structure of the circuit breaker according to the present utility model.

Fig. 2 is a schematic diagram of the assembly of the switch contact device according to the present utility model.

Fig. 3 is a schematic view illustrating an internal structure of the circuit breaker according to the present utility model.

Fig. 4 is a schematic view of the assembly of the mask and the shell according to the present utility model.

Fig. 5 is a schematic diagram of the wiring of the switch contact device according to the present utility model.

In the figure: 1. the shell, 11, the base, 12, the bottom plate; 2. a face mask, 21. Mating holes; 3. an operating mechanism; 4. a controller; 5. a sampling module; 100. a switch contact device, 101. An operating head; 200. a mounting base; 300. and (5) a screw.

Description of the embodiments

The following detailed description of specific embodiments of the utility model, while given in connection with the accompanying drawings, is not intended to limit the scope of the utility model, and any changes that may be made in the form of the inventive concepts described herein, without departing from the spirit and scope of the utility model.

In the following description, any reference to the directions or azimuths of up, down, left, right, front and rear is based on the positions shown in the corresponding drawings, and therefore, should not be construed as a limitation on the technical solutions provided by the present utility model.

Fig. 1 is a schematic diagram of the whole structure of a circuit breaker, the circuit breaker includes a housing 1 and a face mask 2, the housing 1 is formed by splicing a base 11 and a bottom plate 12, a contact system (not shown in the figure) is installed inside the housing 1, the contact system is used for realizing on-off of the circuit breaker, an arc extinguishing chamber (not shown in the figure) is arranged above the contact system and at an opening above the housing 1.

The switch contact assembly 100. The cover 2 is mounted on the base 11, and the cover 2 covers the internal components of the circuit breaker, i.e. the operating mechanism 3, the controller 4, the sampling module 5 and the switch contact device 100, from the front of the circuit breaker. Wherein the operating mechanism 3 is located on one side of the controller 4, and the sampling module 5 and the switch contact device 100 are located on the other side of the controller 4. More specifically, the sampling module 5 is located above the switch contact device 100.

The electric operating mechanism is used for driving the operating mechanism 3 to store energy for closing the breaker (not shown in the figure). The operating mechanism 3 is a driving part of the circuit breaker, and drives the contact system to perform combined operation after the operating part acts.

The sampling module 5 is internally provided with a sampling circuit board, the sampling circuit board processes the transmitted voltage signal and feeds the processed voltage signal back to the controller 4, the controller 4 judges that the voltage signal is judged, and when the tripping condition is reached, the controller 4 triggers the operation mechanism 3 to act.

Of course, the name of the sampling module 5 is only for its sampling processing function, and in practice, the sampling module 5 can include other functions.

The switch contact device 100 is mounted on a mounting base 200, and the mounting base 200 is fixedly mounted on the base 11. This arrangement makes the mounting of the switch contact device 100 more reliable. The shape of the lower surface of the mounting base 200 is adapted to the outer surface of the base 11, and the shape of the upper surface of the mounting base 200 is adapted to the shape of the switch contact device 100.

Of course, the switch contact device 100 may be directly mounted to the base 11, which is easily understood by those skilled in the art, and falls within the scope of the present utility model.

The switch contact device 100 comprises an operation head 101, an operator can insert a tool into the operation head 101 at the outer side of the mask 2, and the operation head 101 is operated by the tool to drive the switch contact device 100 to act, so as to realize the switch, namely, drive the contacts inside the switch contact device 100 to be switched on or switched off.

In this embodiment, the switching contact device 100 has a rotary structure, that is, the internal contacts are turned on or off by the rotation of the rotating shaft inside the switching contact device 100.

As shown in fig. 4, the mask 2 is mounted and fixed to the base 11 by a plurality of screws 300. Specifically, the mask 2 is provided with a plurality of mounting holes, and the screws 300 extend through the mounting holes and are screwed into the base 11 to complete the fixed mounting between the mask 2 and the base 11.

A fitting hole 21 is provided in the mask 2, the fitting hole 21 is used for fitting with the switch contact device 100, and the operating head 101 extends through the fitting hole 21. Specifically, the operation head 101 is located at the outer side of the mask 2, and the operation head 101 can be operated from the outer side of the mask 2. This arrangement is more convenient for an operator to operate the switch contact assembly 100 on the front side of the circuit breaker.

As shown in fig. 5, in this embodiment, a shunt is disposed on the main circuit of the circuit breaker, the incoming line end of the switching contact device 100 is electrically connected to the sampling output end of the shunt, the outgoing line end of the switching contact device 100 is electrically connected to the sampling module 5, and the sampling module 5 is in signal connection with the controller 4. Of course, other sampling methods for directly electrically connecting the main circuit of the circuit breaker are also possible.

When the switch contact device 100 is in the off state, the sampling line connected to the main circuit cannot be conducted with the sampling module 5, and if the circuit breaker is tested or debugged, for example, the voltage is applied, the sampling circuit board in the sampling module 5 will not be damaged.

Of course, the sampling module 5 may be integrated into the controller 4, i.e. the switch contact device is directly connected to the controller 4 and the controller 4 triggers the operation of the operating mechanism 3.

Claims

1. The circuit breaker comprises a shell (1) and a face mask (2), wherein a contact system is arranged in the shell (1), an operating mechanism (3) and a controller (4) are arranged on the shell (1), and the face mask (2) covers the operating mechanism (3) and the controller (4) and is arranged in a matched mode with the shell (1); the controller (4) controls the operating mechanism (3) to drive the contact system to act; the method is characterized in that: the circuit breaker further comprises a conversion contact device (100) and a sampling module (5), wherein a current divider is arranged on a main loop of the circuit breaker, a wire inlet end of the conversion contact device (100) is electrically connected with a sampling output end of the current divider, a wire outlet end of the conversion contact device (100) is electrically connected with the sampling module (5), and the sampling module (5) is in signal connection with the controller (4); the switch contact device (100) comprises an operating head (101), said operating head (101) being operable from outside the mask (2).

2. A circuit breaker according to claim 1, characterized in that: the mask (2) is provided with a matching hole (21), and the operating head (101) extends through the matching hole (21).

3. A circuit breaker according to claim 1, characterized in that: the shell (1) is formed by splicing a base (11) and a bottom plate (12), and the mask (2), the operating mechanism (3), the controller (4), the sampling module (5) and the conversion contact device (100) are all arranged on the base (11).

4. A circuit breaker according to claim 1, characterized in that: the sampling module (5) is internally provided with a sampling circuit board, and the sampling circuit board processes the collected voltage signals and feeds the processed voltage signals back to the controller (4).

5. A circuit breaker according to claim 3, characterized in that: the switching contact device also comprises a mounting base (200), wherein the switching contact device (100) is mounted on the mounting base (200), and the mounting base (200) is fixedly mounted on the base (11).

6. A circuit breaker according to claim 3, characterized in that: the switch contact device (100) is directly mounted to the base (11).

7. A circuit breaker according to claim 1, characterized in that: the operating mechanism (3) is positioned on one side of the controller (4), the sampling module (5) and the switching contact device (100) are positioned on the other side of the controller (4), and the sampling module (5) is positioned above the switching contact device (100).

8. A circuit breaker according to claim 1, characterized in that: the sampling module (5) is integrated inside the controller (4).