CN217507250U

CN217507250U - Current and voltage detection mechanism of circuit breaker contact system

Info

Publication number: CN217507250U
Application number: CN202123287915.XU
Authority: CN
Inventors: 朱华; 张进; 邓小军
Original assignee: Shanghai Jingsi Intelligent Technology Co ltd
Current assignee: Shanghai Jingsi Intelligent Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-09-27
Anticipated expiration: 2031-12-24

Abstract

The utility model discloses a circuit breaker contact system current and voltage detection mechanism, including the shunt, the first end of shunt is equipped with the static contact and comes to contact or separate with the moving contact system in order to realize the switch-on of main circuit and divide absolutely, the second end of shunt be used for with system circuit connection. The utility model discloses reducible return circuit internal resistance reduces the product consumption of transporting.

Description

Current and voltage detection mechanism of circuit breaker contact system

Technical Field

The utility model relates to an electrical equipment technical field especially relates to the circuit breaker product, is a circuit breaker contact system current-voltage detection mechanism particularly.

Background

The circuit breaker is a common device in electrical equipment, has a certain protection function besides a control function, and is widely applied to inlet and outlet wires at all levels of a low-voltage distribution system, power control of various mechanical equipment and control and protection of power terminals. Typical circuit breakers are classified into a plug-in type, a fixed type and a drawer type according to installation manners, and among them, the plug-in type circuit breaker is most widely used. Traditional bayonet circuit breaker of taking automatic divide-shut brake function adopts motor + gear reduction structure more, realizes electric operation through electronic control board control, and its technical scheme when current detection is: the shunt is fixed in the main loop through screws, the internal resistance of the loop is large, and improvement is needed for the improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a be not enough to prior art exists, the utility model provides a provide circuit breaker contact system current-voltage detection mechanism, reduce the return circuit internal resistance, reduce the product consumption of transporting.

For solving above technical problem, the utility model provides a technical scheme is: a current and voltage detection mechanism of a circuit breaker contact system comprises a shunt, wherein a first end of the shunt is provided with a fixed contact which is in contact with or separated from a movable contact system to achieve connection and disconnection of a main circuit, and a second end of the shunt is used for being connected with a system circuit.

Further, the second end of the shunt is provided with a shunt incoming line end for connecting with a system circuit.

Further, the shunt inlet terminal includes a plurality of inlet terminal clamps.

Further, a line terminal clamp is welded to the second end of the shunt.

Further, the shunt comprises a shunt main body and a shunt outgoing line, the shunt main body is a loop resistor, and the shunt outgoing line is used for electricity taking and current measurement of the electronic control unit.

Further, the separator lead-out wire is arranged on one side of the splitter main body.

Further, a contact position detection mechanism is provided near the shunt.

Further, a circuit breaker state indicating mechanism is disposed adjacent the shunt.

Further, the shunt is of a flat plate bending type structure.

Further, the static contact welds in the end of shunt kink.

Compared with the prior art, the utility model provides a circuit breaker contact system current-voltage detection mechanism, its contact system and shunt integral type integration, shunt one end and moving contact system contact carry out the break-make, and other end connection inlet wire end comes the connected system circuit, reduces the return circuit internal resistance, reduces the product fortune and consumes.

Drawings

Fig. 1 is a schematic cross-sectional view of the circuit breaker of the present invention;

fig. 2 is a schematic view of the internal operating mechanism of the circuit breaker according to the present invention;

fig. 3 is a schematic diagram of the internal operating mechanism of the circuit breaker of the present invention;

fig. 4 is the schematic diagram of the current and voltage detection mechanism of the contact system of the circuit breaker of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, but it should not be understood that the scope of the present invention is limited to the embodiments described below.

It should be noted that the references to orientations (e.g., front, back, left, right, up, down, etc.) in the following embodiments are merely relative to positions in the drawings for the purpose of description and understanding, and are not limited to actual positions of products in physical space.

Referring to fig. 1-3, the general structure and internal operating mechanism of the circuit breaker of the present invention are shown. As shown in fig. 1-3, the utility model discloses circuit breaker is by manual operation unit 1, electric operation unit 2, instantaneous protection unit 3, moving contact system 4, static contact system 5 (including reposition of redundant personnel detecting system), arc extinguishing system 6, inlet wire end (main loop and control signal wiring) 7, outlet terminal (user's main loop fast wiring) 8, electronic control and human-computer interaction unit 9, can carry out manual or electronic divide-shut brake and dropout separating brake protection, wherein the clearance between moving contact and the static contact is expressed with L1.

In the circuit breaker, an electronic control and human-computer interaction unit 9 detects the current state of the circuit breaker (a mechanism motion monitoring 901 mechanism and a contact position monitoring 902 detection mechanism) and receives control signals (remote control is active control, and overload protection is passive control), and when the electronic control unit 9 receives a closing instruction, the two-way magnetic holding device of the electric operation unit 2 is triggered to perform closing motion; when the electronic control unit 9 receives an opening or tripping opening command, it triggers the bidirectional magnetic latching device to open, wherein the state of the circuit breaker is indicated by a circuit breaker state indication mechanism 903 (such as an LED lamp). Therefore, the operation process and the state of the circuit breaker can be monitored more effectively.

Referring to fig. 4, it is shown that the current and voltage detecting mechanism of the contact system of the present invention is a contact system with current detecting function. Generally, the current detection in the prior art is generally fastened or welded in the middle of the main circuit by using a shunt screw. Different from this, the utility model discloses a scheme that contact system and shunt integrated to reduce the return circuit internal resistance, reduce product operation consumption.

The utility model discloses contact system current and voltage detection mechanism specifically includes shunt 502, and it is the dull and stereotyped type of bending, and one end is equipped with static contact 501 to realize the switch-on and the branch of main circuit with moving contact 403 contact, separation, shunt 502 other end has then welded inlet wire end binding clip 503 for reliably be connected with system circuit, but the easy maintenance of plug function realization. Here, the shunt 502 is divided into a shunt body 502b and a shunt lead 502a, and is disposed on one side of the shunt body 502b for taking out electricity and measuring current by the electronic control unit.

Although the present embodiment has been described with reference to the accompanying drawings, it should be understood that the present invention is not limited to the above description, but various changes and modifications can be made by one skilled in the art without departing from the spirit and scope of the present embodiment.

Claims

1. A current and voltage detection mechanism of a circuit breaker contact system is characterized by comprising a shunt, wherein a first end of the shunt is provided with a static contact which is in contact with or separated from a moving contact system to realize the connection and disconnection of a main circuit, and a second end of the shunt is used for being connected with a system circuit; the shunt comprises a shunt main body and a shunt outgoing line, wherein the shunt main body is a loop resistor, and the shunt outgoing line is used for power taking and current measurement of the electronic control unit.

2. The circuit breaker contact system current and voltage sensing mechanism of claim 1 wherein the second end of the shunt has a shunt inlet terminal for connection to a system circuit.

3. The circuit breaker contact system current and voltage sensing mechanism of claim 2, wherein the shunt inlet terminal includes a plurality of inlet terminal clamps.

4. The circuit breaker contact system current and voltage sensing mechanism of claim 3 wherein the line inlet terminal clamp is welded to the second end of the shunt.

5. The circuit breaker contact system current and voltage detecting mechanism of claim 1, wherein the splitter outlet is provided at one side of the shunt body.

6. The circuit breaker contact system current and voltage sensing mechanism of claim 1, wherein a contact position sensing mechanism is disposed adjacent the shunt.

7. The circuit breaker contact system current and voltage sensing mechanism of claim 1, wherein a circuit breaker status indication mechanism is disposed proximate the shunt.

8. The circuit breaker contact system current and voltage sensing mechanism of any one of claims 1-7, wherein the shunt is a flat plate bend type structure.

9. The mechanism as claimed in claim 8, wherein the stationary contact is welded to the end of the bent portion of the shunt.