Novel low-voltage intelligent circuit breaker

Abstract

The utility model discloses a novel low-voltage intelligent circuit breaker, which belongs to the technical field of circuit breakers, and is characterized in that the surface of a circuit breaker body is provided with a manual-automatic integrated switch, the bottom of the circuit breaker body is provided with a mounting groove, and the middle position of the mounting groove is fixedly provided with a display module. The intelligent controller with a microprocessor or a single-chip microcomputer as a core is adopted, various protection functions of a common circuit breaker are achieved, meanwhile, the functions of displaying various electrical parameters in a circuit in real time, conducting on-line monitoring, self-adjustment, measurement, testing, self-diagnosis, communication and the like on the circuit are achieved, the application range is widened, the use requirements of people are met, and the intelligent circuit breaker is worthy of popularization and application. And the product integrates overload, short circuit, open phase, undervoltage, residual current, power supply side zero breaking and automatic tracking protection functions, so that reliable opening and closing of the circuit breaker are ensured, accidents are reduced to the greatest extent, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, and more specifically to a novel low-voltage intelligent circuit breaker. Background Art

[0002] A circuit breaker is a distribution device used in a power grid. It can connect, carry and disconnect currents under normal circuit conditions. It can also connect, carry and disconnect currents for a certain period of time under specified abnormal conditions (such as overload, short circuit, undervoltage and single-phase grounding fault). Circuit breakers are divided into four types according to the different protection objects:

[0003] 1. Power distribution protection type - protect power supply and electrical lines (wires, cables) and equipment;

[0004] 2. Motor protection type: specially designed for infrequent starting of motors, disconnection during operation, and protection against overload, short circuit and undervoltage of motors;

[0005] 3. Protection type for household and similar places - protection for lighting circuits, household appliances, etc.;

[0006] 4. Residual current (leakage) protection type - a protector used to protect people from electric shock hazards and prevent electrical fires.

[0007] With the rapid development of my country's economy, the continuous deepening of rural power grid transformation and intelligent transformation of power grid, new requirements have been put forward for the functions of low-voltage circuit breakers, making the commonly used ordinary circuit breakers unable to meet people's needs. Therefore, we have designed a new type of low-voltage intelligent circuit breaker to meet the needs of the market. Utility Model Content

[0008] In view of the problems existing in the prior art, the purpose of the utility model is to provide a new type of low-voltage intelligent circuit breaker. The new type of low-voltage intelligent circuit breaker adopts an intelligent controller with a microprocessor or a single-chip microcomputer as the core. While having various protection functions of ordinary circuit breakers, it also has the functions of real-time display of various electrical parameters in the circuit, online monitoring of the circuit, self-adjustment, measurement, testing, self-diagnosis, communication and the like, which increases the scope of application and meets people's usage needs. In addition, this product integrates overload, short circuit, phase loss, undervoltage, residual current, power supply side zero break, and automatic tracking protection functions, which ensures the reliable opening and closing of the circuit breaker, minimizes the occurrence of accidents, and improves safety in use.

[0009] To solve the above problems, the utility model adopts the following technical solutions.

[0010] A novel low-voltage intelligent circuit breaker comprises a circuit breaker body, the surface of the circuit breaker body is provided with a manual-automatic integrated switch, the bottom of the circuit breaker body is provided with a mounting groove, a display module is fixedly installed in the middle position of the mounting groove, an intelligent controller, a rated current adjustment module, a residual current relay, an AC contactor, an air circuit breaker and a protection module are fixedly installed on the inner wall of the mounting groove, the display module, the intelligent controller, the rated current adjustment module, the residual current relay, the AC contactor, the air circuit breaker and the protection module are connected through a circuit, the bottom of the circuit breaker body is fastened with a bottom plate by screws, the surface of the bottom plate is provided with mounting holes and a circuit board, the A conductive arm is provided on the side of the circuit board, and a power connection post is provided at one end of the conductive arm. The new low-voltage intelligent circuit breaker adopts an intelligent controller with a microprocessor or a single-chip microcomputer as the core. While having various protection functions of ordinary circuit breakers, it also has real-time display of various electrical parameters in the circuit, and online monitoring, self-adjustment, measurement, testing, self-diagnosis, communication and other functions of the circuit, which increases the scope of application and meets people's use needs. In addition, this product integrates overload, short circuit, phase loss, undervoltage, residual current, power supply side zero break, and automatic tracking protection functions, which ensures the reliable opening and closing of the circuit breaker, minimizes the occurrence of accidents, and improves the safety of use.

[0011] Furthermore, the intelligent controller is provided with an intelligent control circuit composed of a single-chip microcomputer as the core or an intelligent control circuit composed of a microprocessor as the core. The manual-automatic switch is electrically connected to the intelligent controller. The intelligent controller can accurately measure various operating parameters in real time, and can quickly trip in case of a fault to ensure the safety of people and lines. It also has automatic and manual opening and closing functions, which is convenient for users to operate in various situations.

[0012] Furthermore, the intelligent controller is electrically connected to the first control module, the second control module, the third control module and the fourth control module through wires, and four control modes are set, namely, intelligent reclosing type (suitable for rural power grid construction), alarm non-action type (suitable for residential power distribution load), action alarm type (suitable for level one and level two loads), and phase-changing switch type (suitable for three-phase unbalanced load), thereby increasing the scope of application of the circuit breaker.

[0013] Furthermore, the protection module is provided with a communication module and an automatic tracking module. The automatic tracking module is data connected with the display module. The communication module can establish a communication connection with a computer and a remote monitoring screen, and the GPRS module can also establish communication with a mobile phone, so that the user can understand the status of the circuit breaker in a timely manner.

[0014] Furthermore, threaded holes are provided at the four corners of the bottom of the circuit breaker body, and a through hole which is coaxial and concentric with the threaded hole is provided on the surface of the bottom plate, so as to facilitate the disassembly and assembly of the bottom plate.

[0015] Furthermore, one end of the through hole is connected to a groove, and the depth of the groove is greater than the thickness of the nut at one end of the screw.

[0016] Furthermore, both ends of the circuit breaker body are provided with threading holes to facilitate the connection of external wires to the power connection poles.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) This solution uses an intelligent controller with a microprocessor or a single-chip microcomputer as the core. While having various protection functions of ordinary circuit breakers, it also has the functions of real-time display of various electrical parameters in the circuit, online monitoring, self-adjustment, measurement, testing, self-diagnosis, and communication of the circuit, which increases the scope of application and meets people's usage needs.

[0019] (2) This solution integrates overload, short circuit, phase loss, undervoltage, residual current, power supply side zero failure, and automatic tracking protection functions, ensuring the reliable opening and closing of the circuit breaker, minimizing the occurrence of accidents and improving safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0021] Figure 2 This is a bottom view of the circuit breaker body structure of the utility model;

[0022] Figure 3 This is a top view of the bottom plate structure of the utility model;

[0023] Figure 4 It is a bottom view of the base plate structure of the present utility model.

[0024] Description of the numbers in the figure:

[0025] 1 circuit breaker body, 11 mounting groove, 12 threaded hole, 13 threading hole, 2 display module, 3 intelligent controller, 31 manual and automatic switch, 32 first control module, 33 second control module, 34 third control module, 35 fourth control module, 4 rated current adjustment module, 5 residual current relay, 6 AC contactor, 7 air circuit breaker, 8 protection module, 81 communication module, 82 automatic tracking module, 9 bottom plate, 91 circuit board, 92 conductive arm, 93 connecting pole, 94 mounting hole, 95 through hole, 96 groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] See also Figure 1-4 A novel low-voltage intelligent circuit breaker comprises a circuit breaker body 1, a manual-automatic switch 31 is arranged on the surface of the circuit breaker body 1, a mounting groove 11 is arranged at the bottom of the circuit breaker body 1, a display module 2 is fixedly installed at the middle position of the mounting groove 11, an intelligent controller 3, a rated current adjustment module 4, a residual current relay 5, an AC contactor 6, an air circuit breaker 7 and a protection module 8 are fixedly installed on the inner wall of the mounting groove 11, the intelligent controller 3 is electrically connected with a first control module 32, a second control module 33, a third control module 34 and a fourth control module 35 through a wire, and four control modes are set, namely, intelligent reclosing type (suitable for rural power grid construction), alarm non-action type (suitable for residential power distribution load), action alarm type (suitable for primary and secondary loads), and phase-changing switch type (suitable for three-phase unbalanced load), thereby increasing the scope of application of the circuit breaker and protecting mode Block 8 can set the protection function and protection setting value according to the actual situation, check the cause of fault tripping, and display the fault parameters when tripping. The display module 2, intelligent controller 3, rated current adjustment module 4, residual current relay 5, AC contactor 6, air circuit breaker 7 and protection module 8 are connected through a circuit, and the combination of residual current relay 5, AC contactor 6 and air circuit breaker 7 is transformed into an integrated type, which greatly reduces the installation space of the switch cabinet, simplifies the wiring, and saves the total cost of the product. The rated current adjustment module 4 makes the rated current adjustable, and the rated current of the circuit breaker is adjustable from 630A to 40A, realizing "one machine full coverage". The bottom of the circuit breaker body 1 is fastened with a base plate 9 by screws, and the surface of the base plate 9 is provided with a mounting hole 94 and a circuit board 91, and the side of the circuit board 91 is provided with a conductive arm 92, and one end of the conductive arm 92 is provided with a power connection column 93.

[0029] The intelligent controller 3 is provided with an intelligent control circuit composed of a single chip microcomputer as the core or an intelligent control circuit composed of a microprocessor as the core. The manual-automatic switch 31 is electrically connected to the intelligent controller 3. The intelligent controller 3 can accurately measure various operating parameters in real time, and can quickly trip in case of a fault to ensure the safety of people and lines. It also has automatic and manual opening and closing functions, which is convenient for users to operate in various situations. Both ends of the circuit breaker body 1 are provided with wire holes 13 to facilitate the connection of external wires to the power connection column 93.

[0030] In this embodiment, an intelligent controller 3 with a microprocessor or a single-chip microcomputer as the core is adopted. While having various protection functions of an ordinary circuit breaker, it also has the functions of real-time display of various electrical parameters in the circuit, online monitoring, self-adjustment, measurement, testing, self-diagnosis, communication and the like of the circuit, which increases the scope of application and meets people's usage needs.

[0031] Example 2

[0032] See also Figure 1-4 A novel low-voltage intelligent circuit breaker comprises a circuit breaker body 1, a manual-automatic switch 31 is arranged on the surface of the circuit breaker body 1, a mounting groove 11 is arranged at the bottom of the circuit breaker body 1, a display module 2 is fixedly installed at the middle position of the mounting groove 11, an intelligent controller 3, a rated current adjustment module 4, a residual current relay 5, an AC contactor 6, an air circuit breaker 7 and a protection module 8 are fixedly installed on the inner wall of the mounting groove 11, the intelligent controller 3 is electrically connected with a first control module 32, a second control module 33, a third control module 34 and a fourth control module 35 through a wire, and four control modes are set, namely, intelligent reclosing type (suitable for rural power grid construction), alarm non-action type (suitable for residential power distribution load), action alarm type (suitable for primary and secondary loads), and phase-changing switch type (suitable for three-phase unbalanced load), thereby increasing the scope of application of the circuit breaker and protecting mode Block 8 can set the protection function and protection setting value according to the actual situation, check the cause of fault tripping, and display the fault parameters when tripping. The display module 2, intelligent controller 3, rated current adjustment module 4, residual current relay 5, AC contactor 6, air circuit breaker 7 and protection module 8 are connected through a circuit, and the combination of residual current relay 5, AC contactor 6 and air circuit breaker 7 is transformed into an integrated type, which greatly reduces the installation space of the switch cabinet, simplifies the wiring, and saves the total cost of the product. The rated current adjustment module 4 makes the rated current adjustable, and the rated current of the circuit breaker is adjustable from 630A to 40A, realizing "one machine full coverage". The bottom of the circuit breaker body 1 is fastened with a base plate 9 by screws, and the surface of the base plate 9 is provided with a mounting hole 94 and a circuit board 91, and the side of the circuit board 91 is provided with a conductive arm 92, and one end of the conductive arm 92 is provided with a power connection column 93.

[0033] The protection module 8 is provided with a communication module 81 and an automatic tracking module 82. The automatic tracking module 82 is data-connected with the display module 2. The communication module 81 can establish a communication connection with a computer and a remote monitoring screen, and can also establish communication with a mobile phone through a GPRS module, so that the user can understand the status of the circuit breaker in a timely manner. Threaded holes 12 are provided at the four corners of the bottom of the circuit breaker body 1. The surface of the bottom plate 9 is provided with a through hole 95 that is concentric and coaxial with the threaded hole 12, which is convenient for the disassembly and assembly of the bottom plate 9. One end of the through hole 95 is connected to a groove 96, and the depth of the groove 96 is greater than the thickness of the nut at one end of the screw.

[0034] In this implementation scheme, overload, short circuit, phase loss, undervoltage, residual current, power supply side zero break, and automatic tracking protection functions are integrated into one, ensuring the reliable opening and closing of the circuit breaker, minimizing the occurrence of accidents and improving safety of use.

[0035] During use, the novel low-voltage intelligent circuit breaker can set the control mode to be used according to actual needs through the first control module 32, the second control module 33, the third control module 34 and the fourth control module 35. During use, an intelligent controller 3 (intelligent release) with a microprocessor or a single-chip microcomputer as the core is adopted. While having various protection functions of ordinary circuit breakers, it also has the real-time display of various electrical parameters (current, voltage, power, power factor, etc.) in the circuit through the display module 2, and performs online monitoring, self-adjustment, measurement, testing, self-diagnosis, communication and other functions on the circuit through the protection module 8. It can display, set and modify the action parameters of various protection functions, and the fault parameters when the protection circuit is in action can be stored in a non-volatile memory for query. In addition, this product integrates overload, short circuit, phase loss, undervoltage, residual current, power supply side zero break, and automatic tracking protection functions, ensuring the reliable opening and closing of the circuit breaker, minimizing the occurrence of accidents, and improving the safety of use.

[0036] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A novel low-voltage intelligent circuit breaker, comprising a circuit breaker body (1), characterized in that: The surface of the circuit breaker body (1) is provided with a manual-automatic switch (31); the bottom of the circuit breaker body (1) is provided with a mounting groove (11); a display module (2) is fixedly mounted in the middle of the mounting groove (11); an intelligent controller (3), a rated current adjustment module (4), a residual current relay (5), an AC contactor (6), an air circuit breaker (7) and a protection module (8) are fixedly mounted on the inner wall of the mounting groove (11); the display module (2), the intelligent controller (3), the rated current adjustment module (4), the residual current relay (5), the AC contactor (6), the air circuit breaker (7) and the protection module (8) are connected via a circuit; a bottom plate (9) is fastened to the bottom of the circuit breaker body (1) by screws; a mounting hole (94) and a circuit board (91) are provided on the surface of the bottom plate (9); a conductive arm (92) is provided on the side of the circuit board (91); and a power connection post (93) is provided at one end of the conductive arm (92).

2. A novel low-voltage intelligent circuit breaker according to claim 1, characterized in that: The intelligent controller (3) is provided with an intelligent control circuit composed of a single chip microcomputer as a core or an intelligent control circuit composed of a microprocessor as a core, and the manual-automatic switch (31) is electrically connected to the intelligent controller (3).

3. A novel low-voltage intelligent circuit breaker according to claim 1, characterized in that: The intelligent controller (3) is electrically connected to a first control module (32), a second control module (33), a third control module (34) and a fourth control module (35) via wires.

4. A novel low-voltage intelligent circuit breaker according to claim 1, characterized in that: The protection module (8) is provided with a communication module (81) and an automatic tracking module (82), and the automatic tracking module (82) is data-connected to the display module (2).

5. A novel low-voltage intelligent circuit breaker according to claim 1, characterized in that: The four corners of the bottom of the circuit breaker body (1) are all provided with threaded holes (12), and the surface of the bottom plate (9) is provided with through holes (95) that are coaxial and concentric with the threaded holes (12).

6. A novel low-voltage intelligent circuit breaker according to claim 5, characterized in that: One end of the through hole (95) is connected to a groove (96), and the depth of the groove (96) is greater than the thickness of a nut at one end of the screw.

7. A novel low-voltage intelligent circuit breaker according to claim 1, characterized in that: Both ends of the circuit breaker body (1) are provided with threading holes (13).

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