CN116313664A - Three-phase independent breaking molded case circuit breaker with dual-source indication of opening and closing status - Google Patents

Abstract

The invention relates to the technical field of circuit breakers, and discloses a three-phase independent breaking plastic-shell circuit breaker adopting a double-source mode to indicate the breaking and closing state, which comprises a circuit breaker main body, wherein the circuit breaker main body is a three-phase independent breaking plastic-shell circuit breaker, and three independent breaking and closing operation mechanisms are arranged on the circuit breaker main body and respectively control the breaking and closing of three-phase wires; a tact switch is arranged in the breaker main body and positioned on the contact system of each opening and closing operation mechanism, and an indicator lamp is arranged on the surface of the breaker main body and positioned below each opening and closing operation mechanism; the circuit breaker is characterized in that a circuit board is further arranged in the circuit breaker main body, and the tact switch and the indicator lamp are electrically connected with the circuit board. The three-phase independent breaking molded case circuit breaker adopting the double-source mode to indicate the breaking and closing state can avoid the situation that the moving and static contacts are not completely separated when a circuit cannot be connected and the breaking is not carried out due to insufficient closing, the outgoing line side is electrified and the circuit is not cut off to a great extent, and the safety is improved.

Description

Three-phase independent breaking molded case circuit breaker with dual-source indication of opening and closing status

technical field

The invention relates to the technical field of circuit breakers, in particular to a three-phase independently breaking molded case circuit breaker which adopts a dual-source form to indicate the opening and closing states.

Background technique

The existing plastic case circuit breaker uses a mechanical structure to handle the opening and closing state indication of the circuit breaker, that is, the current position of the operating mechanism is used to indicate the opening and closing state of the circuit breaker at this time;

When the mechanical structure fails, because the position of the dynamic and static contacts inside the circuit breaker cannot be seen intuitively, the opening and closing state of the circuit breaker cannot be accurately displayed. The opening and closing sign has reached the opening position, and the actual contact There is still a connection between them, and the line has not been disconnected, resulting in a safety accident.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides a three-phase independent breaking molded case circuit breaker which adopts a dual-source form to indicate the opening and closing state. On the basis of the opening and closing mechanical structure of the existing molded case circuit breaker, electrical components are added, The correctness of the opening and closing instructions is ensured through the cooperation of the circuit board, and the problem of insufficient opening and closing is prevented.

(2) Technical solutions

To achieve the above object, the present invention provides the following technical solutions:

The three-phase independently breaking molded case circuit breaker that adopts dual-source form to indicate the opening and closing state includes a circuit breaker main body. The circuit breaker main body is a three-phase independent breaking molded case circuit breaker. The gate operating mechanism controls the on-off of the three-phase wires respectively; the inside of the circuit breaker body is located on the contact system of each opening and closing operating mechanism, and a light touch switch is arranged on the surface of the circuit breaker body. An indicator light is provided under the opening and closing operating mechanism; a circuit board is also provided inside the main body of the circuit breaker, and the tact switch and the indicator light are electrically connected to the circuit board.

As a further improvement of the above scheme, the three opening and closing operating mechanisms are respectively equipped with three releases, and the three releases are used to control the breaking of the three-phase wires; the main body of the circuit breaker is also equipped with a three-phase The transformer for abnormal current on the wire, the transformer, and the three releases are all connected to the control module. When the current on a certain phase wire is abnormal, the control module will receive the abnormal current collected by the transformer, and then the control module will send out One signal activates the release on the corresponding phase, thereby achieving single-phase tripping.

As a further improvement of the above solution, the contact system includes a moving contact and a static contact, the moving contact and the static contact are respectively connected to two wires, and the connection or separation of the moving contact and the static contact is realized. On and off.

As a further improvement of the above solution, the tact switch is arranged at the opening position of the moving contact.

As a further improvement of the above solution, one side of the circuit breaker body is provided with a circuit breaker body socket, and the lower end of the control module is provided with a control module pin; the control module is plugged into the circuit breaker body through the control module pin on the side of the circuit breaker body receptacle.

As a further improvement of the above solution, the tripper is an electromagnetic tripper.

As a further improvement of the above solution, each opening and closing operation mechanism further includes an arc extinguishing chamber for eliminating the arc generated when the moving and contacting are opened and closed.

As a further improvement of the above scheme, the two ends of the main body of the circuit breaker are respectively provided with a terminal 1 and a terminal 2 for connecting wires, and the terminal 1 and the terminal 2 are respectively connected to the moving contact and the static contact through internal conductors. head.

As a further improvement of the above solution, the outer shell of the main body of the circuit breaker is made of plastic material to play an isolation role.

(3) Beneficial effects

Compared with the prior art, the present invention provides a three-phase independently breaking molded case circuit breaker that uses a dual-source form to indicate the opening and closing state, and has the following beneficial effects:

1. The three-phase independent breaking molded case circuit breaker, which uses dual sources to indicate the opening and closing status, can largely avoid the failure of the line to be connected due to insufficient closing and the incomplete separation of the dynamic and static contacts when the switch is opened. If the side is charged and the line is not cut off, the safety is increased.

2. The three-phase independent breaking molded case circuit breaker adopts dual-source form to indicate the opening and closing state. Three sets of operating mechanisms and three releases are installed in the main body of the circuit breaker, and the single-phase intelligent circuit breaker is realized through the control module. The function of independent breaking solves the problem that the existing circuit breakers are often disconnected and cause large-scale power outages, which affect the power consumption of users.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of disassembly structure of the present invention;

Fig. 3 is a sectional view of the present invention;

Fig. 4 is a schematic diagram of the internal structure of the present invention;

Fig. 5 is an installation diagram of the control module in the present invention.

In the figure: 1. The main body of the circuit breaker; 1-1. The socket of the main body of the circuit breaker; 2. The control module; 2-1. The pins of the control module; 3. The opening and closing operating mechanism; 4. The indicator light; 6. Tact switch; 7. Interrupter; 8. Release device; 9. Internal conductor; 10. Contact system; 11. Terminal 1; 12. Terminal 2.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

Please refer to Figure 1-5. The three-phase independent breaking molded case circuit breaker that uses dual sources to indicate the opening and closing status includes the main body 1 of the circuit breaker. The outer shell of the main body 1 of the circuit breaker is made of plastic material for isolation.

The main body 1 of the circuit breaker is a molded case circuit breaker with three-phase independent breaking. The main body 1 of the circuit breaker is equipped with three independent opening and closing operating mechanisms 3, which respectively control the on-off of the three-phase wires; the inside of the main body 1 of the circuit breaker is located in each branch The contact system 10 of the closing operating mechanism 3 is provided with a light touch switch 6, and the surface of the circuit breaker main body 1 is located under each opening and closing operating mechanism 3, and an indicator light 4 is provided; the circuit breaker main body 1 There is also a circuit board 5 in the interior, and the light touch switch 6 and the indicator light 4 are all electrically connected to the circuit board 5 .

The three opening and closing operating mechanisms 3 are respectively provided with three trippers 8 , and the tripping of the three-phase wires is controlled through the three trippers; the trippers 8 are electromagnetic trippers. The main body 1 of the circuit breaker is also equipped with a transformer for collecting abnormal currents on the three-phase wires. The transformers and the three releases 8 are all connected to the control module 2. When the current on a certain phase wire is abnormal, the control module 2 will After receiving the abnormal current collected by the transformer, the control module 2 will send a signal to make the release 8 on the corresponding phase act, thereby realizing single-phase tripping.

The contact system 10 includes a moving contact and a static contact. The moving contact and the static contact are respectively connected to two wires, and the connection or disconnection of the line is realized through the contact or separation of the moving contact and the static contact.

The light touch switch 6 is arranged at the opening position of the moving contact, and the shell of the light touch switch 6 is made of insulating material.

One side of the circuit breaker body 1 is provided with a circuit breaker body socket 1-1, and the lower end of the control module 2 is provided with a control module pin 2-1; the control module 2 is plugged into the circuit breaker body 1 through the control module pin 2-1 The main body socket 1-1 of the circuit breaker on the side is convenient for the installation, disassembly and replacement of the control module 2.

Each opening and closing operating mechanism 3 also includes an arc extinguishing chamber 7, which is used to eliminate the arc generated when the moving and contact opening and closing.

Both ends of the main body 1 of the circuit breaker are respectively provided with terminal 1 11 and terminal 2 12 for connecting wires, and the terminal 1 11 and terminal 2 12 are respectively connected to the moving contact and the static contact through the inner conductor 9 .

The added components mainly include adding a tact switch at the closing position of the moving contact, and an indicator light 2 is set under each opening and closing operating mechanism 1, and the lighting and extinguishing of the indicator light represent the closing of the circuit breaker. Gates and gates.

The main function is to judge the opening and closing state of the circuit breaker at this time through the current position of the contact.

The working principle of the present invention: the opening and closing of the circuit breaker is finally attributed to the contact and disconnection of the dynamic and static contacts in the contact system. The present invention sets the light touch switch 6 at the opening position of the moving contact. , the circuit breaker will drive the release device 8 for tripping due to current or voltage protection. When the switch is opened, the moving contact is separated from the static contact. When the moving contact reaches the opening position, the light touch switch 6 will be disconnected at the same time. The light touch switch 6 is disconnected, the electrical signal changes, and the electrical signal is transmitted to the circuit board 3. After the circuit board 3 receives the electrical signal that the movable contact reaches the opening position, the opening and closing indicator light 2 goes out, and at the same time, it is used as a mechanical structure. The operating mechanism is also in the opening position due to the action of the release 8. The absolute separation of the dynamic and static contacts inside the circuit breaker is ensured through these two forms of indication. Only when the two forms of signals are consistent can it be considered that the circuit is open at this time. The opening status of the device is correct. When the circuit breaker is closed, toggle the opening and closing operating mechanism 3 to make the moving contact move downward, and then contact the static contact, and at the same time push the light touch switch 6 and the static contact, after the light touch switch 6 is turned on An electrical signal is generated, and the electrical signal is transmitted to the circuit board 5. It is judged that the circuit breaker is in the closed state at this time, the opening and closing indicator light 2 lights up, and the two forms of signals are consistent, and the circuit breaker is normally closed at this time;

The three-phase independent breaking molded case circuit breaker, which adopts a dual-source form to indicate the opening and closing state, can largely avoid the failure to connect the line due to insufficient closing and opening, and the dynamic and static contacts are not completely separated, and the outlet side is charged. , If the line is not cut off, it increases safety.

At the same time, three sets of operating mechanisms and three releases 8 are installed in the circuit breaker main body 1, and the single-phase independent breaking function of the intelligent circuit breaker is realized through the control module 2, which solves the problem of large-scale power outages caused by the frequent disconnection of existing circuit breakers. Problems that affect users' electricity consumption.

Claims (9)

1. A three-phase independently breaking molded case circuit breaker that uses dual sources to indicate the opening and closing state, including a circuit breaker main body (1), characterized in that the circuit breaker main body (1) is a three-phase independent breaking molded case circuit breaker , the main body (1) of the circuit breaker is provided with three independent opening and closing operating mechanisms (3), which respectively control the on-off of the three-phase wires; the interior of the circuit breaker main body (1) is located in each opening and closing operating mechanism ( 3) The contact system (10) is equipped with a light touch switch (6), and the surface of the circuit breaker body (1) is located under each opening and closing operating mechanism (3) and is equipped with an indicator light ( 4); the circuit breaker main body (1) is also provided with a circuit board (5), and the tact switch (6) and indicator light (4) are electrically connected to the circuit board (5). 2. The three-phase independent breaking molded case circuit breaker that uses dual sources to indicate the opening and closing state according to claim 1, characterized in that: the three opening and closing operating mechanisms (3) are respectively equipped with three The tripper (8) controls the disconnection of the three-phase wires through three trippers; the main body of the circuit breaker (1) is also provided with a transformer for collecting abnormal currents on the three-phase wires, a transformer, three trippers (8) are connected to the control module (2). When the current on a certain phase wire is abnormal, the control module (2) will receive the abnormal current collected by the transformer, and then the control module (2) will send a signal to make the corresponding The tripper (8) on the phase operates to realize single-phase tripping. 3. The three-phase independent breaking molded case circuit breaker with dual-source indication of opening and closing states according to claim 1, characterized in that: the contact system (10) includes moving contacts and static contacts, and the moving contacts The contact and the static contact are respectively connected to two wires, and the connection or disconnection of the line is realized through the contact or separation of the moving contact and the static contact. 4. The three-phase independently breaking molded case circuit breaker with dual-source indication of opening and closing states according to claim 3, characterized in that: the tact switch (6) is arranged at the opening position of the moving contact. 5. According to any one of claims 2-4, the three-phase independent breaking molded case circuit breaker adopting a dual-source form to indicate the opening and closing state is characterized in that: one side of the main body (1) of the circuit breaker is provided with The circuit breaker main body socket (1-1), the lower end of the control module (2) is provided with a control module pin (2-1); the control module (2) is connected through the control module pin (2-1) On the circuit breaker body socket (1-1) on the side of the circuit breaker body (1). 6. The three-phase independently breaking molded case circuit breaker with dual-source indication of opening and closing states according to claim 5, characterized in that: the tripper (8) is an electromagnetic tripper. 7. The three-phase independent breaking molded case circuit breaker using dual sources to indicate the opening and closing state according to claim 6, characterized in that: each of the opening and closing operating mechanisms (3) also includes an arc extinguishing chamber ( 7), used to eliminate the arc generated when moving and contacting. 8. The three-phase independent breaking molded case circuit breaker using dual sources to indicate the opening and closing state according to claim 7, characterized in that: the two ends of the main body (1) of the circuit breaker are respectively provided with terminal one ( 11), terminal two (12), used to connect electric wires, and terminal one (11), terminal two (12) respectively connect the moving contact and the static contact through the inner conductor (9). 9. The three-phase independent breaking molded case circuit breaker with dual-source indication of opening and closing states according to claim 8, characterized in that: the casing of the main body (1) of the circuit breaker is made of plastic material.

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