CN108400068B - Wiring early warning type low-voltage circuit breaker and control method thereof - Google Patents

Abstract

The invention discloses a wiring pre-warning low-voltage circuit breaker and a control method thereof, which includes a shell and an internal escape mechanism. The shell is provided with a wave switch and a wiring slot, and a corresponding through hole is provided above the wiring slot. hole, the through hole is provided with fastening bolts, the wiring trough is provided with an upper plywood, a lower plywood and an insulating contact, a pressure sensing circuit is provided below the wiring trough, and a pressure sensing circuit is provided on the pressure sensing circuit. Multiple pressure sensors, one end of the insulating contact is glued to the lower plywood, and the other end is located on the pressure sensing circuit. A central control box for early warning is also provided on the side of the housing. The central control box is connected to the pressure sensor. The induction circuit is electrically connected. Beneficial effects of the present invention: by adding a wiring early warning function to the circuit breaker, line failures caused by loose wiring are effectively prevented, and at the same time, the tightening effect of the low-voltage circuit breaker wiring is further improved.

Description

A wiring early warning low-voltage circuit breaker and its control method

Technical field

The present application belongs to the field of electrical equipment, and specifically relates to a wiring warning low-voltage circuit breaker and a control method thereof.

Background technique

With the development of science and technology, electricity is widely used in production and life. Low-voltage circuit breaker is a very important electrical appliance in low-voltage distribution network and electric drive system. It plays the role of breaking and connecting circuits in distribution lines. When a circuit failure occurs, the circuit breaker automatically cuts off the power. Existing circuit breakers use bolts to fix the wires in the wiring trough. In the case of long-term use, loosening is inevitable, which directly affects the safety of electricity.

Contents of the invention

In view of this, the technical problem to be solved by this application is to provide a wiring early warning low-voltage circuit breaker and its control method to effectively provide early warning for the circuit breaker's wire tightening condition.

In order to solve the above technical problems, this application discloses a wiring pre-warning low-voltage circuit breaker, which includes a shell and an internal escape mechanism. The shell is provided with a fluctuation switch and a wiring trough, and a corresponding switch is provided above the wiring trough. through holes, fastening bolts are provided in the through holes, upper plywood, lower plywood and insulating contacts are provided in the wiring trough, a pressure sensing circuit is provided below the wiring trough, and a pressure sensing circuit is provided on the pressure sensing circuit A plurality of pressure sensors are provided. One end of the insulating contact is glued to the lower plywood, and the other end is provided on the pressure sensing circuit. A central control box for early warning prompts is also provided on the side of the housing. The central control box Electrically connected to the pressure sensing circuit.

Better: the insulating contact includes a receiving plate and a force conduction rod, a limiting hole is provided at the bottom of the wiring trough, the force conducting rod is located in the limiting hole, the receiving plate and the lower plywood are glued together Connected, one end of the force transmission rod is connected to the receiving plate, and the other end is provided on the pressure sensing circuit. The receiving plate and the force transmission rod are integrally formed.

Even better: the housing is also provided with a mounting block, the mounting block is provided with a mounting hole, and the bottom of the housing is provided with a buckle.

Even better: the upper plywood is provided with a first wire groove and a pressure plate, and the lower plywood is provided with a second wire groove and a pressure groove matching the pressure plate.

Even better: there is an annular iron core on the peripheral side of the wiring trough, a coil is wound on the annular iron core, a gap is also provided on the annular iron core, and a Hall sensor is installed in the gap, so The coil and the Hall sensor are both electrically connected to the central control box.

This application also discloses a control method based on wiring early warning low-voltage circuit breaker, which includes the following steps:

S1: Press the start button of the central control box to wake up the pressure sensor. After the pressure sensor is awakened, start the wiring operation. At the same time, the pressure sensor monitors the pressure in the wiring slot in real time. If the tightening pressure requirements are met, start During the closing operation, if the tightening requirements are not met, the LED lights set on the central control box and corresponding to each wiring slot will light up to remind the operator that the tightening requirements are not up to standard.

S2: After closing, the timing module inside the central control box starts, waking up the pressure sensor at regular intervals to monitor the tightening status, and at the same time waking up the Hall sensor, collecting the current signal of the energized circuit and feeding it back to the central control box.

S3: The processing circuit in the central control box determines whether the pressure meets the tightening requirements. If it meets the tightening requirements, it continues to judge the tightening pressure. If it does not meet the requirements, it notifies the server terminal through the nRF905 wireless communication module, the same. , the processing circuit determines whether the current signal exceeds the rated current of the circuit breaker. If the rated current is not exceeded, the judgment continues. If the rated current is exceeded, the server is notified through the nRF905 wireless communication module.

S4: The server sends the early warning signal to the mobile terminal. The operator can control the central control box through the mobile terminal according to actual needs, and perform forced disconnection operations on the internal release of the circuit breaker.

Compared with the existing technology, this application can achieve the following technical effects:

1) The direct bolt fastening method used in traditional wiring ducts is improved to the method of using upper and lower splints and fastening with bolts, which increases the contact area between the conductors and the fastening bolts, effectively improving the fastening effect;

2) The pressure sensor detects the pressure in the wiring trough, which can intuitively reflect the tightening status in the wiring trough;

3) Early warning of the fastening status and current status in the wiring trough, and prompts through wireless communication, significantly improving the safety of electricity use.

Of course, implementing any product of this application does not necessarily require achieving all the above-mentioned technical effects at the same time.

Description of the drawings

The drawings described here are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the attached picture:

Figure 1 is a perspective view of the overall structure of the embodiment of the present application;

Figure 2 is a schematic diagram of the wiring trough according to the embodiment of the present application;

Figure 3 is an enlarged view of the wiring trough according to the embodiment of the present application;

Figure 4 is a schematic structural diagram of the upper splint and the lower splint according to the embodiment of the present application;

Figure 5 is a schematic structural diagram of the central control box according to the embodiment of the present application;

Figure 6 is a flow chart of the control method according to the embodiment of the present application.

Marking instructions in the figure: 1. Shell, 2. Wave switch, 3. Wiring slot, 4. Through hole, 5. Upper plywood, 6. Lower plywood, 7. Insulated contacts, 8. Pressure sensing circuit, 9. Central control Box, 10. Installation block, 11. Buckle, 12. Ring core, 13. Coil, 14. Hall sensor, 15. Printed circuit board, 16. Magnetic isolation plate, 41. Fastening bolts, 51. First Wire trough, 52. Pressure plate, 61. Second wire trough, 62. Pressure trough, 91. Pressure signal light, 92. Current signal light, 93. Start button, 94. Transmitting antenna.

Detailed ways

The embodiments of the present application will be described in detail below with reference to the drawings and examples, so that the implementation process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

As shown in Figures 1 and 2, a wiring pre-warning low-voltage circuit breaker according to the embodiment of the present application includes a housing 1 and an internal release mechanism. The housing 1 is provided with a surge switch 2 and a wiring slot 3, and above the wiring slot 3 there is a Corresponding to the through hole 4, the through hole 4 is provided with a fastening bolt 41. In existing low-voltage circuit breakers, the wires are generally placed in the wiring trough first, and then fastened with fastening bolts, and the fastening effect is poor. , in order to improve the fastening effect and at the same time function as a fastening warning, the wiring trough 3 is provided with an upper plywood 5, a lower plywood 6 and an insulating contact 7. A pressure sensing circuit 8 is provided below the wiring trough 3. The pressure sensing circuit 8 is provided with a plurality of pressure sensors, one end of the insulating contact 7 is glued to the lower plywood 6, and the other end is located on the pressure sensing circuit 8, and corresponds to the pressure sensor on the pressure sensing circuit 8 one by one. There is also a central control box 9 for early warning prompts on the side, and the central control box 9 is electrically connected to the pressure sensing circuit 8 .

In this embodiment, the insulating contact 7 is composed of two parts, including a receiving plate and a force transmission rod. A limiting hole is provided at the bottom of the wiring slot 3. The force conducting rod is located in the limiting hole. The receiving plate and the lower plywood 6 are glued together. Connect, one end of the force transmission rod is connected to the receiving plate, and the other end is located on the pressure sensing circuit 8. Considering that the force transmission rod and the receiving plate have certain requirements on the connection strength, the receiving plate and the force conducting rod are formed in one piece. To increase the strength and facilitate installation, the housing 1 is also provided with a mounting block 10, the mounting block 10 is provided with mounting holes, and the bottom of the housing 1 is also provided with a buckle 11.

As shown in Figures 3 and 4: In this embodiment, an annular iron core 12 is also provided on the peripheral side of the wiring slot 3. A coil 13 is wound around the annular iron core 12. A gap is also provided on the annular iron core 12. In the gap, There is a Hall sensor 14 inside. The coil 13 and the Hall sensor 14 are both electrically connected to the central control box 9 for monitoring the current changes in each wiring slot 3. In order to further improve the wiring strength, on the upper plywood 5 There is a first wire groove 51 and a pressure plate 52. The lower clamping plate 6 is provided with a second wire groove 61 and a pressure groove 62 matching the pressure plate 52. When wiring, the wires are wound into a disc shape and the circle is The disk part is placed in the pressing groove 62, the straight part is placed in the second wiring groove 61, and the upper clamping plate 5 and the lower clamping plate 6 are pressed together by rotating the bolt 41 to play a tightening role.

As shown in Figure 5: In this embodiment, the central control box is provided with a pressure signal light 91, a current signal light 92, a start switch 93 and a transmitting antenna 94 for wireless communication early warning.

This application also provides a control method for the above-mentioned wiring pre-warning low-voltage circuit breaker, including the following steps:

S1: Press the start button of the central control box to wake up the pressure sensor. After the pressure sensor is awakened, start the wiring operation. At the same time, the pressure sensor monitors the pressure in the wiring slot in real time. If the tightening pressure requirements are met, start During the closing operation, if the tightening requirements are not met, the LED lights set on the central control box and corresponding to each wiring slot will light up to remind the operator that the tightening requirements are not up to standard.

S2: After closing, the timing module inside the central control box starts, waking up the pressure sensor at regular intervals to monitor the tightening status, and at the same time waking up the Hall sensor, collecting the current signal of the energized circuit and feeding it back to the central control box.

S3: The processing circuit in the central control box determines whether the pressure meets the tightening requirements. If it meets the tightening requirements, it continues to judge the tightening pressure. If it does not meet the requirements, it notifies the server terminal through the nRF905 wireless communication module, the same. , the processing circuit determines whether the current signal exceeds the rated current of the circuit breaker. If the rated current is not exceeded, the judgment continues. If the rated current is exceeded, the server is notified through the nRF905 wireless communication module.

S4: The server sends the early warning signal to the mobile terminal. The operator can control the central control box through the mobile terminal according to actual needs, and perform forced disconnection operations on the internal release of the circuit breaker.

Beneficial effects of the present invention: by adding a wiring early warning function to the circuit breaker, line failures caused by loose wiring are effectively prevented, and at the same time, the tightening effect of the low-voltage circuit breaker wiring is further improved.

The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various embodiments. other combinations, modifications and environments, and can be modified through the above teachings or technology or knowledge in related fields within the scope of the inventive concept described herein. Any modifications and changes made by those skilled in the art that do not depart from the spirit and scope of the present invention shall be within the protection scope of the appended claims of the present invention.

Claims (1)

1. The utility model provides a wiring early warning formula low voltage circuit breaker, includes shell (1) and inside shedding mechanism, be equipped with wave switch (2) and wiring groove (3) on shell (1), its characterized in that: the wire connection device is characterized in that a through hole (4) corresponding to the wire connection groove (3) is formed above the wire connection groove, a fastening bolt (41) is arranged in the through hole (4), an upper clamping plate (5), a lower clamping plate (6) and an insulating contact (7) are arranged in the wire connection groove (3), a pressure sensing circuit (8) is arranged below the wire connection groove (3), a plurality of pressure sensors are arranged on the pressure sensing circuit (8), one end of the insulating contact (7) is glued with the lower clamping plate (6), the other end of the insulating contact is arranged on the pressure sensing circuit (8), a central control box (9) for early warning and prompting is further arranged on the side face of the shell (1), and the central control box (9) is electrically connected with the pressure sensing circuit (8);

the insulation contact (7) comprises a bearing disc and a force transmission rod, a limit hole is formed in the bottom of the wiring groove (3), the force transmission rod is arranged in the limit hole, the bearing disc is glued with the lower clamping plate (6), one end of the force transmission rod is connected with the bearing disc, the other end of the force transmission rod is arranged on the pressure sensing circuit (8), and the bearing disc and the force transmission rod are integrally formed;

the shell (1) is also provided with a mounting block (10), the mounting block (10) is provided with a mounting hole, and the bottom of the shell (1) is also provided with a buckle (11);

the upper clamping plate (5) is provided with a first wire placing groove (51) and a pressure plate (52), and the lower clamping plate (6) is provided with a second wire placing groove (61) and a pressure groove (62) matched with the pressure plate (52);

the periphery of the wiring groove (3) is also provided with an annular iron core (12), a coil (13) is wound on the annular iron core (12), a notch is further formed in the annular iron core (12), a Hall sensor (14) is arranged in the notch, and the coil (13) and the Hall sensor (14) are electrically connected with the central control box (9);

the control method of the wiring early warning type low-voltage circuit breaker comprises the following steps:

s1: pressing a start button of the central control box, waking up the pressure sensor, starting wiring operation after the pressure sensor is waken up, monitoring the pressure in the wiring groove in real time by the pressure sensor, starting closing operation if the fastening pressure requirement is met, and lighting an LED lamp which is arranged on the central control box and corresponds to each wiring groove if the fastening requirement is not met, so as to remind operators that the fastening requirement does not reach the standard;

s2: after closing, a timing module in the central control box is started, the pressure sensor is awakened at intervals to monitor the fastening state, and meanwhile, the Hall sensor is awakened, and a current signal of an energizing loop is collected and fed back to the central control box;

s3: the processing circuit in the central control box judges whether the pressure meets the fastening requirement, if so, the fastening pressure is continuously judged, if not, the server terminal is informed by the nRF905 wireless communication module, and likewise, the processing circuit judges whether the current signal exceeds the rated current of the circuit breaker, if not, the judgment is continuously carried out, and if so, the server is informed by the nRF905 wireless communication module;

s4: the server sends the early warning signal to the mobile terminal, and an operator can control the central control box through the mobile terminal according to actual demands and perform forced tripping operation on the tripper in the circuit breaker.