CN116031111A - Plastic case circuit breaker with voltage detection function - Google Patents

Abstract

The invention relates to a molded case circuit breaker with a voltage detection function, which comprises a base and an intelligent tripping module, wherein a transmission mechanism is arranged on the base, the transmission mechanism realizes the action execution of switching on and off of the circuit breaker, one or more modularized mounting positions are arranged on the base, and a circuit access end and a circuit output end of the circuit breaker are arranged on the base; the intelligent tripping module is arranged in the modularized installation position and comprises an electronic controller module, a magnetic flux converter module and a mutual inductor module, wherein the magnetic flux converter module is electrically connected with the circuit access end and the circuit output end through pre-connecting wires respectively through magnetic force driving transmission mechanisms, so that pre-detection of voltage and phase during opening and real-time detection of voltage and phase during closing are realized. Compared with the prior art, the invention ensures that the installation, test and use of the circuit breaker are safer, reduces the safety risk and reduces the potential safety hazard.

Description

Plastic case circuit breaker with voltage detection function

Technical Field

The invention relates to the field of circuit breakers, in particular to a molded case circuit breaker with a voltage detection function.

Background

The existing market lacks necessary voltage detection for 315A and electronic molded case circuit breaker products below the 315A, voltage can be detected only when a circuit is switched on, voltage cannot be detected when the circuit is switched off, and corresponding judgment can not be made on the state of the voltage. At the moment, if the voltage is seriously over-voltage or under-voltage, the safety of the product cannot be ensured, potential safety hazards are easily caused, and life and property losses are caused.

The existing products correspondingly do not have a voltage detection method for the molded case circuit breaker, and more development of a circuit breaker product for realizing voltage and phase detection during switching on and switching off is needed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a molded case circuit breaker with a voltage detection function, namely a circuit breaker product for realizing voltage and phase detection during switching on and switching off.

The aim of the invention can be achieved by the following technical scheme:

the invention aims to protect a molded case circuit breaker with a voltage detection function, the intelligent tripping device comprises a base and an intelligent tripping module, wherein specifically:

the base is provided with a transmission mechanism which realizes the action execution of switching on and off of the circuit breaker, the base is provided with one or more modularized installation positions, and the base is provided with a circuit access end and a circuit output end of the circuit breaker;

the intelligent tripping module is arranged in the modularized installation position and comprises an electronic controller module, a magnetic flux converter module and a mutual inductor module, wherein the magnetic flux converter module is electrically connected with the circuit access end and the circuit output end through pre-connecting wires respectively through magnetic force driving transmission mechanisms, so that pre-detection of voltage and phase during opening and real-time detection of voltage and phase during closing are realized.

Further, three wiring grooves are formed in the bottom surface of the base.

Further, the pre-connection line comprises three pre-connection sub-lines which are preset with the circuit access terminal, and the initial ends of the three pre-connection sub-lines are respectively connected with each interface of the circuit access terminal.

Further, the transformer module includes three transformer sub-modules opposing the three phases.

Further, the three transformer sub-modules are respectively and correspondingly connected with the tail ends of the three pre-connection sub-lines.

Further, the three wiring grooves are linear grooves, and the three wiring grooves are arranged in parallel.

Further, the mutual inductor module is connected with the electronic controller module through an analog circuit, and the electronic controller module converts analog signals of the voltage signals and the phase signals obtained by the mutual inductor module into digital signals.

Further, the electronic controller module is connected with the magnetic flux converter module through an analog circuit, so that the magnetic flux converter is instructed to output corresponding magnetic flux.

Further, the magnetic flux transducer drives a traction rod in the transmission mechanism to displace by the magnetic flux of the coil.

Further, the transformer module is arranged in the modularized installation position, the magnetic flux converter module is arranged above the transformer module, and the electronic controller module is arranged above the magnetic flux converter module;

and a backup protection is further arranged in the modularized installation position at one side of the intelligent tripping module.

Compared with the prior art, the invention has the following technical advantages:

(1) The plastic-case circuit breaker with the intelligent tripping control module is used for detecting the pre-voltage and the switching-on voltage simultaneously, so that the circuit breaker is safer to install, test and use, the safety risk is reduced, and the potential safety hazard is reduced.

(2) The technical scheme has simple structure and reliable detection, and realizes the functions of voltage pre-detection, phase voltage detection and open-phase detection when the rear part of the molded case circuit breaker with the intelligent tripping control module is closed.

Drawings

Fig. 1 is a schematic cross-sectional structure of a molded case circuit breaker according to the present invention;

fig. 2 is a schematic structural view of a molded case circuit breaker according to the present invention.

Fig. 3 is a schematic view of the bottom lead of the molded case circuit breaker of the present invention.

In the figure, 1 is a base, 2 is a fixed contact, 3 is an arc extinguishing device, 4 is a cover, 5 is a transmission mechanism, 6 is an intelligent tripping control module, 7 is backup protection, A is a wire inlet end, B is a wire distribution groove, and C is a wire outlet end.

Detailed Description

The invention will now be described in detail with reference to the drawings and specific examples. Features such as component model, material name, connection structure and the like which are not explicitly described in the technical scheme are all regarded as common technical features disclosed in the prior art.

The molded case circuit breaker with a voltage detection function in the present embodiment includes a base 1 and an intelligent trip module 6, wherein specific reference is made to fig. 1 to fig. The intelligent tripping control module is mainly used for providing voltage pre-detection of opening and closing, phase voltage detection and open-phase detection for the molded case circuit breaker with the intelligent tripping control module. When the breaker needs to be installed, tested and used, whether the voltage is too large or too small before closing can be effectively judged by detecting the voltage, so that the safety risk is reduced, and the life and property safety is protected. Meanwhile, when the switch is closed, voltage detection can be carried out on each phase, and whether the voltage of each phase is in a phase failure or not can be effectively judged.

The base 1 is provided with a transmission mechanism 5, the transmission mechanism 5 realizes the action execution of switching-on and switching-off of the circuit breaker, the base 1 is provided with one or more modularized installation positions, and the base 1 is provided with a circuit access end and a circuit output end of the circuit breaker;

the intelligent tripping module 6 is arranged in the modularized installation position, the intelligent tripping module 6 comprises an electronic controller module, a magnetic flux converter module and a mutual inductor module, the magnetic flux converter module is used for driving the transmission mechanism 5 through magnetic force, and the mutual inductor module is respectively electrically connected with the circuit access end and the circuit output end through a pre-connecting wire, so that pre-detection of voltage and phase during opening and real-time detection of voltage and phase during closing are realized.

Three wiring grooves are arranged on the bottom surface of the base 1. The pre-connection line comprises three pre-connection sub-lines which are preset with the circuit access end, and the initial ends of the three pre-connection sub-lines are respectively connected with each interface of the circuit access end. The transformer module includes three transformer sub-modules opposite the three phases. The three transformer sub-modules are respectively and correspondingly connected with the tail ends of the three pre-connection sub-lines.

In the specific implementation, the three wiring grooves are linear grooves, and the three wiring grooves are arranged in parallel.

The transformer module is connected with the electronic controller module through an analog circuit, and the electronic controller module converts analog signals of the voltage signals and the phase signals obtained by the transformer module into digital signals. The electronic controller module is connected with the magnetic flux converter module through an analog circuit, so that the magnetic flux converter is instructed to output corresponding magnetic flux. The magnetic flux transducer drives the traction rod in the transmission mechanism 5 to displace by the magnetic flux of the coil.

In specific implementation, the transformer module is a main current transformer product in the existing products, and the magnetic flux converter is a main current magnetic flux converter product in the market.

In specific implementation, the transformer module is arranged in the modularized installation position, the magnetic flux converter module is arranged above the transformer module, and the electronic controller module is arranged above the magnetic flux converter module.

The main flow traction transmission structure of the existing circuit breaker is selected, namely the transmission mechanism 5 comprises a moving contact, a rotating shaft, a motion mechanism, a bracket, a traction rod and the like, and the magnetic flux converter drives the traction rod in the transmission mechanism 5 to displace through the magnetic flux of the coil. The transmission mechanism 5 has 4 states, and is tripped, loaded with a buckle, closed and opened. The initial state is in a tripped state. When the breaker is switched on, the carrying buckle is needed to be carried out firstly, and then the breaker can be switched on. When the device is closed, the transmission mechanism rotates anticlockwise, so that a moving contact on the transmission mechanism contacts with a fixed contact, and closing action is completed. When the brake is opened or tripped, the moving contact and the fixed contact are separated on the basis of closing, and the transmission mechanism rotates clockwise. It can be seen that the above states can be all achieved by driving the traction rod in the transmission mechanism 5, i.e. the magnetic flux converter module in the present solution can control the switching of the above states.

And a backup protection 7 is further arranged in the modularized installation position at one side of the intelligent tripping module 6, and the backup protection 7 selects the existing main stream equipment in the market. The backup protection 7 refers to protection for cutting off faults when the main protection or the circuit breaker fails. When the circuit fails, protection on the circuit will signal the circuit breaker to open at the instant.

The invention is realized by the following modes: the transmission mechanism 5 is arranged in the cavity in the middle of the base 1. The static contact 2 is arranged in a contact cavity in the base 1, the arc extinguishing device 3 is arranged in the arc extinguishing cavity of the base 1, and the arc extinguishing device 3 comprises an arc extinguishing chamber, a gas production protective cover and the like. The backup protection 7 and the intelligent tripping control module 6 are installed in a corresponding proper cavity of the base 1, the intelligent tripping control module 6 comprises an electronic controller module, a magnetic flux converter module, a transformer module and the like, and the cover 4 is installed on the base 1. The transformer module is installed, a group of wires are led out from the rear end, come out from the A, pass through the B and then are connected at the C, and the voltage of the wires can be detected at the moment to finish the pre-detection, the phase voltage detection and the phase failure detection of the voltage.

Working principle: according to the invention, a group of lines are led out from the line inlet end of the circuit breaker base and are connected to the line outlet end, so that when the circuit breaker is opened, the voltage of the line inlet end can be pre-detected, and the state of the voltage, namely overvoltage, undervoltage, no voltage and the like, can be judged; when the breaker is switched on, the circuit can be detected to judge the voltage state of each phase and the phase failure detection, so that the installation, the test and the use of the breaker are safer, and the effect of reducing potential safety hazards is achieved. Therefore, the function of detecting voltage when the circuit breaker is switched on or off is realized.

The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.

Claims (10)

1. A moulded case circuit breaker with voltage detection function, characterized by comprising:

the base (1) is provided with a transmission mechanism (5), the transmission mechanism (5) realizes the action execution of switching-on and switching-off of the circuit breaker, the base (1) is provided with one or more modularized installation positions, and the base (1) is provided with a circuit access end and a circuit output end of the circuit breaker;

the intelligent tripping module (6) is arranged in the modularized installation position, the intelligent tripping module (6) comprises an electronic controller module, a magnetic flux converter module and a transformer module, the magnetic flux converter module drives the transmission mechanism (5) through magnetic force, and the transformer module is respectively electrically connected with the circuit access end and the circuit output end through a pre-connecting wire, so that pre-detection of voltage and phase during opening and real-time detection of voltage and phase during closing are realized.

2. A molded case circuit breaker with voltage detection function according to claim 1, characterized in that the bottom surface of the base (1) is provided with three wiring grooves.

3. The molded case circuit breaker with voltage detection function according to claim 2, wherein the pre-connection line comprises three pre-connection sub-lines predetermined with the circuit access terminal, and the starting ends of the three pre-connection sub-lines are respectively connected with each interface of the circuit access terminal.

4. A molded case circuit breaker with voltage detection function as in claim 3 wherein said transformer module comprises three transformer sub-modules opposing three phases.

5. The molded case circuit breaker with voltage detection function according to claim 4, wherein the three transformer sub-modules are respectively connected with the ends of three pre-connection sub-lines correspondingly.

6. The molded case circuit breaker with voltage detection function according to claim 2, wherein the three wiring grooves are linear grooves and are arranged in parallel.

7. The molded case circuit breaker with voltage detection function according to claim 1, wherein the transformer module is connected with the electronic controller module through an analog circuit, and the electronic controller module converts analog signals of the voltage signal and the phase signal obtained by the transformer module into digital signals.

8. The molded case circuit breaker with voltage detection function of claim 1, wherein the electronic controller module is connected to the magnetic flux converter module through an analog circuit, thereby instructing the magnetic flux converter to output a corresponding magnetic flux.

9. A molded case circuit breaker with voltage detection function according to claim 1, characterized in that the magnetic flux transducer is displaced by a traction rod in a magnetic flux driving transmission mechanism (5) of a coil.

10. The molded case circuit breaker with voltage detection function according to claim 1, wherein the transformer module is arranged in a modular installation position, the magnetic flux transformer module is arranged above the transformer module, and the electronic controller module is arranged above the magnetic flux transformer module;

and a backup protection (7) is further arranged in the modularized installation position at one side of the intelligent tripping module (6).

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