A leakage protection device and method for a low-voltage power distribution cabinet

Abstract

The present invention relates to the technical field of leakage protection devices, and particularly relates to a leakage protection device and method for a low-voltage power distribution cabinet, including a power distribution cabinet structure, a display screen, a voltmeter, a control cabinet, a first control base, a second control base, and a first insulation protection frame. The side end of the power distribution cabinet structure is electrically connected to the control cabinet, and the control cabinet is equipped with a display screen and a voltmeter, which are used for displaying the state of the power distribution cabinet structure. The control cabinet is also provided with a first control base and a second control base for automatically monitoring and processing the power distribution cabinet structure. The rear end of the power distribution cabinet structure is electrically connected to a disconnection processing structure, which conducts current while actively disconnecting the circuit. The disconnection processing structure is provided with a first insulation protection frame and a second insulation protection frame, and the first insulation protection frame and the second insulation protection frame insulate and cover the disconnection processing structure. Through the setting of the structure, it is convenient to carry out leakage protection work.

Description

Technical Field

[0001] The present invention relates to the technical field of leakage protection devices, and specifically, to a leakage protection device and method for a low-voltage power distribution cabinet. Background Art

[0002] Leakage protection devices are required for low-voltage power distribution cabinets to strengthen the control of circuits. Leakage protection devices are mainly used to protect against leakage faults of equipment and fatal electric shocks to people. They have overload and short-circuit protection functions, can be used to protect circuits or motors from overload and short-circuit, and can also be used for infrequent conversion and startup of circuits under normal circumstances.

[0003] According to Chinese Patent Publication No. CN219144785U, there is provided a leakage protection device for a low-voltage power distribution cabinet, which relates to the technical field of leakage protection. It includes a power distribution cabinet body. An installation groove is opened near the top edge on one side of the power distribution cabinet body. Two sliding rails are fixed inside the installation groove. A leakage protection device body is arranged inside the installation groove. A plurality of docking grooves are opened on both sides of the leakage protection device body. Pulling grooves are opened on the inner walls on both sides of the plurality of docking grooves. Insulating plates are arranged inside the plurality of pulling grooves. Arc-shaped openings are opened on one side of the plurality of insulating plates, mainly to solve the problem that currently, when installing a leakage protection device, it is mostly connected to the outside through a terminal block, and there is no arc extinguishing facility on the terminal block, and it is easy to burn the surrounding wires or other objects when an arc is generated, resulting in accidents.

[0004] Currently, for existing leakage protection devices of low-voltage power distribution cabinets and the above-mentioned case, during use, most of them are controlled through complex mechanical structures, which is not convenient for mechanical circuit cutting work. When the leakage protection device fails, secondary protection cannot be provided, easily causing safety accidents. Therefore, improvements are made for the above problems. Summary of the Invention

[0005] In view of the problems in the prior art, the present invention provides a leakage protection device and method for a low-voltage power distribution cabinet.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a leakage protection device and method for a low-voltage power distribution cabinet, including a power distribution cabinet structure, a display screen, a voltmeter, a control cabinet, a first control base, a second control base, and a first insulation protection frame. The side end of the power distribution cabinet structure is electrically connected to the control cabinet, and a display screen and a voltmeter are installed on the control cabinet. The display screen and the voltmeter are used for displaying the state of the power distribution cabinet structure. The control cabinet is also provided with a first control base and a second control base for automatic monitoring and processing of the power distribution cabinet structure;

[0007] The rear end of the power distribution cabinet structure is electrically connected to a disconnection processing structure. The disconnection processing structure conducts current while actively disconnecting the circuit. The disconnection processing structure is provided with a first insulation protection frame and a second insulation protection frame. The first insulation protection frame and the second insulation protection frame insulatively cover the disconnection processing structure. The power distribution cabinet structure is connected to the electrical equipment through the disconnection processing structure, and the rear end of the power distribution cabinet structure is fixed to the first insulation protection frame and the second insulation protection frame.

[0008] Specifically, the power distribution cabinet structure includes a power distribution component and a cabinet door. The front end of the power distribution component is rotatably connected with a cabinet door.

[0009] The power distribution component includes an exhaust pipe, a ventilation seat, a cabinet body, a leakage protection mechanism, a ground row, a ventilation base, and a zero row. The lower end of the exhaust pipe is communicated with the ventilation seat. The lower end of the ventilation seat is communicated with the cabinet body. A leakage protection mechanism is arranged inside the cabinet body. A ground row and a zero row are arranged at the lower end of the leakage protection mechanism for connecting the zero line and the ground line. The bottom of the cabinet body is provided with a ventilation base, and the ventilation base is communicated with the ventilation seat and the exhaust pipe through the cabinet body.

[0010] Specifically, the leakage protection mechanism includes a leakage detection part and a circuit control part. The leakage detection part is arranged at the central position of the circuit control part, and the leakage detection part monitors the leakage of the circuit control part.

[0011] The leakage detection part includes a mutual inductance processing unit and an insulation protection bracket. The mutual inductance processing unit is fixedly arranged at the center of the insulation protection bracket.

[0012] Specifically, the mutual inductance processing unit includes a first mutual inductor, a conductive telescopic shaft, a power-on seat, a power-on frame, a spring hinge seat, a contact frame, an infrared detector, and a circuit board seat. The lower end of the first mutual inductor is provided with a conductive telescopic shaft, which can be telescopically controlled. The conductive telescopic shaft is electrically connected to the circuit board seat, and the first mutual inductor is also electrically connected to the circuit board seat. An infrared detector is arranged at the bottom of the circuit board seat, and the infrared detector is used for optically monitoring the position of the conductive telescopic shaft.

[0013] Specifically, a contact frame is provided at the lower end of the conductive telescopic shaft. The contact frame is hinged to a spring hinge seat. The upper end of the spring hinge seat is fixedly connected to a power-on frame. The upper end of the power-on frame is fixed to a power-on seat. The conductive telescopic shaft is relatively movable with respect to the contact frame. Through the structural arrangement of the power distribution component, it is convenient to carry out power distribution control work. Among them, the ventilation base is communicated with the cabinet body at the upper end, and the upper end of the cabinet body is communicated with the exhaust pipe through a ventilation seat, which is convenient for heat dissipation inside the cabinet body. The leakage protection mechanism is arranged at the central position of the cabinet body and can carry out power distribution control work. The leakage protection mechanism is combined by a leakage detection part and a circuit control part. The leakage detection part is convenient for current detection work. When a leakage problem occurs, it can be fed back to the circuit control part for processing. The first current transformer at the inner end of the mutual inductance processing unit detects the current. When the current shows leakage, at this time, the conductive telescopic shaft generates a magnetic field under the control of the circuit board seat and can control the movement of the internal magnetic block. At this time, the infrared detector can detect. At the same time, when the magnetic block descends, it can contact the contact frame. The contact frame is elastically hinged to the spring hinge seat and can contact the magnetic block. At this time, the power-on seat conducts electricity and is transmitted through the power-on frame, spring hinge seat, and contact frame, and then connected to the magnetic block. It returns through the contact frame, spring hinge seat, and power-on frame on the other side to form a circuit. At this time, the circuit board seat senses again. After confirming that there is no error, the branch circuit breaker can be closed for breaking work. When leakage problems occur at multiple points, the first control base and the second control base will control to close the main circuit breaker for main circuit control.

[0014] Specifically, the circuit control part includes a first track frame, a main circuit breaker, a second track frame, a connecting wire, and a branch circuit breaker. The main circuit breaker is fixedly installed on the first track frame. The lower end of the main circuit breaker is connected to the branch circuit breaker through a connecting wire. The branch circuit breaker is limited on the second track frame.

[0015] Specifically, the disconnection and connection processing structure includes a wiring connection seat, a disconnection and connection control component, and an insulating support plate. The wiring connection seat is electrically connected to the disconnection and connection control component, and the lower end of the disconnection and connection control component is supported by the insulating support plate.

[0016] Specifically, the disconnection control component includes an electric controller, a hinged support base, an electric control hydraulic rod, a docking adjustment hinge frame, a position detector, a magnetic block, and a second mutual inductor. The front end of the combined wire seat is connected with a docking line seat. An elastic fastening shaft is installed on the docking line seat. The front end of the docking line seat is connected with a live wire in a butt joint manner. A neutral wire is arranged on the side end of the live wire. The upper ends of the live wire and the neutral wire are fixedly sleeved with a docking combined connecting frame. The upper end of the docking combined connecting frame is fixedly connected with a matching hinged top block. The upper end of the matching hinged top block is hinged with a docking adjustment hinge frame. An electric control hydraulic rod is installed at the upper end of the docking adjustment hinge frame. The upper end of the electric control hydraulic rod is hinged with the hinged support base. The electric controller is installed at the upper end of the hinged support base. The live wire and the neutral wire are wound and penetrated through the second mutual inductor. A magnetic block is telescopically connected to the upper end of the second mutual inductor. A position detector is arranged on the magnetic block. The position detector is used to detect the position of the magnetic block and is electrically connected to the electric controller. The electric controller controls the telescopic movement of the electric control hydraulic rod, thereby driving the docking adjustment hinge frame and the matching hinged top block to move. Through the structural setting of the disconnection processing structure, it is convenient to carry out the line connection work, and at the same time, active disconnection control can be carried out. The wiring connection seat and the branch circuit breaker are connected by a wire, and the wiring connection seat is electrically connected to the combined wire seat. The combined wire seat is connected to the live wire and the neutral wire through two docking line seats, thereby conducting electricity. When the second mutual inductor senses a leakage problem, at this time, the second mutual inductor controls the magnetic block to descend. A magnetic field is generated by the coil in the second mutual inductor to adsorb the magnetic block, causing the magnetic block to descend. And it is equipped with an independent power supply. The position detector can sense the position of the magnetic block. When the position of the magnetic block cannot be detected, at this time, the electric controller actively controls the electric control hydraulic rod to work, controls the electric control hydraulic rod to extend. The electric control hydraulic rod can push the matching hinged top block to move through the docking adjustment hinge frame, so that the docking combined connecting frame is separated from the docking line seat. The setting of the elastic fastening shaft facilitates the connection between the docking line seat and the live wire. Under a large external force, the live wire can be separated from the docking line seat, thereby carrying out the active disconnection control work.

[0017] Specifically, the wiring connection seat and the combined wire seat are electrically connected. The first track frame and the second track frame are fixedly connected to the cabinet body. The circuit board seat is fixed at the center of the insulation protection bracket, and the rear end of the insulation protection bracket is fixedly connected to the cabinet body.

[0018] A method for a leakage protection device of a low-voltage power distribution cabinet includes the following steps:

[0019] S1. First, the lines within the power distribution cabinet structure can be connected to the first and second control bases within the control cabinet. The display screen can display the status, and the voltmeter can display the voltage status. The rear end of the power distribution cabinet structure is protected by the first and second insulation protection frames for the disconnection and connection processing structure. The disconnection and connection processing structure can pass through the first and second insulation protection frames to connect with external electrical equipment. Electric energy reaches different branch circuit breakers through the main circuit breaker via the connecting wires;

[0020] S2. Then, the branch circuit breaker is connected to the wiring connection seat through a wire to conduct the transfer of electric energy. The first current transformer within the mutual inductance processing unit can sense the current of the connecting wire. When a leakage problem occurs, the magnetic field on the first current transformer will change at this time, which is fed back to the circuit board base to control the movement of the magnetic block within the conductive telescopic shaft. The infrared detector can sense the position of the magnetic block on the conductive telescopic shaft. When the magnetic block descends to the bottom position, it can contact the contact frame. At this time, the energized seat, through the energizing frame, spring hinge seat, contact frame, and magnetic block, can form a loop. The energized seat conducts induction, and the contact frame and infrared detector are used for the feedback processing of larger leakage problems and are fed back to the first and second control bases, thereby controlling the branch circuit breaker to close;

[0021] S3. When the leakage protection mechanism fails, a magnetic field can be generated through the second current transformer to control the descent of the magnetic block. The position detector detects the magnetic block. After detecting the descent of the magnetic block, it can actively control the electro-hydraulic rod to extend through the electric controller;

[0022] S4. Finally, the lower end of the electro-hydraulic rod is hinged to the matching hinge top block through the docking adjustment hinge frame, thereby pushing the matching hinge top block to move, causing the docking combination connecting frame to drive the live wire and neutral wire to move. At this time, the live wire and neutral wire can be separated from the docking line seats on both sides to achieve the purpose of opening the circuit.

[0023] Advantages of the present invention:

[0024] 1. Through the structural arrangement of the power distribution components, the present invention facilitates the power distribution control work. The ventilation base is connected to the cabinet body at the upper end, and the upper end of the cabinet body is connected to the exhaust pipe through the ventilation seat, which facilitates the heat dissipation work inside the cabinet body. The leakage protection mechanism is arranged at the central position of the cabinet body and can perform the power distribution control work. The leakage protection mechanism is composed of a leakage detection part and a circuit control part. The leakage detection part facilitates the current detection work. When a leakage problem occurs, it can feedback to the circuit control part for processing. The first current transformer at the inner end of the mutual inductance processing unit detects the current. When the current shows leakage, at this time, the conductive telescopic shaft generates a magnetic field under the control of the circuit board seat and can control the movement of the internal magnetic block. At this time, the infrared detector can detect. At the same time, when the magnetic block descends, it can contact the contact frame. The contact frame is elastically hinged with the spring hinge seat and can contact the magnetic block. At this time, the energized seat conducts electricity and is transmitted through the energizing frame, spring hinge seat, and contact frame, and then connected to the magnetic block. It returns through the contact frame, spring hinge seat, and energizing frame on the other side to form a circuit. At this time, the circuit board seat senses again. After confirmation, the branch circuit breaker can be closed for breaking work. When leakage problems occur at multiple points, the first control base and the second control base will control to close the main circuit breaker for total circuit control.

[0025] 2. Through the structural arrangement of the disconnection and connection processing structure, the present invention facilitates the line connection work and can perform active disconnection control at the same time. The wiring connection seat is connected to the branch circuit breaker through a wire, and the wiring connection seat is electrically connected to the combined wire seat. The combined wire seat is connected to the live wire and the neutral wire through two docking line seats to conduct electricity. When the second current transformer senses a leakage problem, at this time, the second current transformer controls the magnetic block to descend, generates a magnetic field through the coil inside the second current transformer to adsorb the magnetic block, causing the magnetic block to descend, and is equipped with an independent power supply. The position detector can sense the position of the magnetic block. When the position of the magnetic block cannot be detected, at this time, the electric controller actively controls the electric control hydraulic rod to work, controls the electric control hydraulic rod to extend, and the electric control hydraulic rod can push the matching hinge top block to move through the docking adjustment hinge frame, so that the docking combined connecting frame is separated from the docking line seat. The elastic fastening shaft is provided to facilitate the connection between the docking line seat and the live wire. Under a large external force, the live wire can be separated from the docking line seat to perform the active disconnection control work. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the drawings and embodiments.

[0027] Figure 1 is a three-dimensional view of the main body in the present invention;

[0028] Figure 2 is a three-dimensional side view of the main body in the present invention;

[0029] Figure 3 Is the three-dimensional rear view of the main body in the present invention;

[0030] Figure 4 Is the three-dimensional rear view exploded view of the main body in the present invention;

[0031] Figure 5 Is the exploded view of the power distribution cabinet structure in the present invention;

[0032] Figure 6 Is the three-dimensional view of the power distribution component in the present invention;

[0033] Figure 7 Is the three-dimensional view of the leakage protection mechanism in the present invention;

[0034] Figure 8 Is the three-dimensional view of the leakage detection part in the present invention;

[0035] Figure 9 Is the three-dimensional view of the mutual inductance processing unit in the present invention;

[0036] Figure 10 Is the three-dimensional view of the circuit control part in the present invention;

[0037] Figure 11 Is the three-dimensional view of the disconnection and connection processing structure in the present invention;

[0038] Figure 12 Is the three-dimensional view of the disconnection and connection control component in the present invention.

[0039] In the figure: 1 - power distribution cabinet structure, 2 - display screen, 3 - voltmeter, 4 - control cabinet, 5 - first control base, 6 - second control base, 7 - first insulation protection frame, 8 - second insulation protection frame, 9 - disconnection and connection processing structure, 10 - power distribution component, 11 - cabinet door, 12 - exhaust pipe, 13 - ventilation seat, 14 - cabinet body, 15 - leakage protection mechanism, 16 - ground busbar, 17 - ventilation base, 18 - neutral busbar, 19 - leakage detection part, 20 - circuit control part, 21 - mutual inductance processing unit, 22 - insulation protection bracket, 23 - first current transformer, 24 - conductive telescopic shaft, 25 - power-on seat, 26 - power-on frame, 27 - spring hinge seat, 28 - contact frame, 29 - infrared detector, 30 - circuit board seat, 31 - first track frame, 32 - main circuit breaker, 33 - second track frame, 34 - connecting wire, 35 - branch circuit breaker, 36 - wiring connection seat, 37 - disconnection and connection control component, 38 - insulation support plate, 39 - electric controller, 40 - hinge support seat, 41 - electric control hydraulic rod, 42 - docking adjustment hinge frame, 43 - in-place detector, 44 - magnetic block, 45 - second current transformer, 46 - live wire, 47 - neutral wire, 48 - mating hinge top block, 49 - docking combination connecting frame, 50 - docking circuit seat, 51 - elastic fastening shaft, 52 - combined wire seat. Specific embodiments

[0040] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0041] The present invention will be further described below in conjunction with the accompanying drawings.

[0042] Embodiment: As Figures 1-12 shown, a leakage protection device and method for a low-voltage power distribution cabinet of the present invention includes a power distribution cabinet structure 1, a display screen 2, a voltmeter 3, a control cabinet 4, a first control base 5, a second control base 6, and a first insulation protection frame 7. The side end of the power distribution cabinet structure 1 is electrically connected to the control cabinet 4, and the control cabinet 4 is equipped with a display screen 2 and a voltmeter 3. The display screen 2 and the voltmeter 3 are used for displaying the state of the power distribution cabinet structure 1. The control cabinet 4 is also provided with a first control base 5 and a second control base 6 for automatically monitoring and processing the power distribution cabinet structure 1. The lines in the power distribution cabinet structure 1 can be connected to the first control base 5 and the second control base 6 in the control cabinet 4. At this time, the display screen 2 can display the state, and at the same time, the voltmeter 3 performs the voltage state display work. The rear end of the power distribution cabinet structure 1 is protected by a disconnection processing structure 9 through a first insulation protection frame 7 and a second insulation protection frame 8. The disconnection processing structure 9 can pass through the first insulation protection frame 7 and the second insulation protection frame 8 to be connected to external electrical equipment;

[0043] The rear end of the power distribution cabinet structure 1 is electrically connected to a disconnection processing structure 9. The disconnection processing structure 9 conducts current and actively disconnects the line. The disconnection processing structure 9 is provided with a first insulation protection frame 7 and a second insulation protection frame 8. The first insulation protection frame 7 and the second insulation protection frame 8 insulate and cover the disconnection processing structure 9, and the power distribution cabinet structure 1 is connected to the electrical equipment through the disconnection processing structure 9. The rear end of the power distribution cabinet structure 1 is fixed to the first insulation protection frame 7 and the second insulation protection frame 8.

[0044] The power distribution cabinet structure 1 includes a power distribution component 10 and a cabinet door 11. The front end of the power distribution component 10 is flip-connected to the cabinet door 11;

[0045] The power distribution component 10 includes an exhaust pipe 12, a ventilation seat 13, a cabinet body 14, a leakage protection mechanism 15, a ground busbar 16, a ventilation base 17, and a neutral busbar 18. The lower end of the exhaust pipe 12 communicates with the ventilation seat 13, the lower end of the ventilation seat 13 communicates with the cabinet body 14, a leakage protection mechanism 15 is provided inside the cabinet body 14, and a ground busbar 16 and a neutral busbar 18 are provided at the lower end of the leakage protection mechanism 15 for connecting the neutral line and the ground line. The bottom of the cabinet body 14 is provided with a ventilation base 17, and the ventilation base 17 communicates with the ventilation seat 13 and the exhaust pipe 12 through the cabinet body 14.

[0046] The leakage protection mechanism 15 includes a leakage detection part 19 and a circuit control part 20. The leakage detection part 19 is provided at the central position of the circuit control part 20. The leakage detection part 19 monitors the leakage of the circuit control part 20. The upper end of the ventilation seat 13 communicates with the exhaust pipe 12, which facilitates the heat dissipation and ventilation work inside the power distribution component 10. The ground busbar 16 and the neutral busbar 18 are provided at the lower end of the leakage protection mechanism 15, which facilitates the wiring process. The setting of the leakage protection mechanism 15 can distribute electric energy, and the circuit control part 20 is used for specific distribution. The setting of the leakage detection part 19 can perform current induction, so as to control the open circuit of the circuit control part 20.

[0047] The leakage detection part 19 includes a mutual inductance processing unit 21 and an insulation protection bracket 22. The mutual inductance processing unit 21 is fixedly provided at the center of the insulation protection bracket 22.

[0048] The mutual inductance processing unit 21 includes a first mutual inductor 23, a conductive telescopic shaft 24, a power-on seat 25, a power-on frame 26, a spring hinge seat 27, a contact frame 28, an infrared detector 29, and a circuit board seat 30. The lower end of the first mutual inductor 23 is provided with a conductive telescopic shaft 24. The conductive telescopic shaft 24 can perform telescopic control, and the conductive telescopic shaft 24 is electrically connected to the circuit board seat 30, and the first mutual inductor 23 is also electrically connected to the circuit board seat 30. The infrared detector 29 is provided at the bottom of the circuit board seat 30, and the infrared detector 29 is used for optical monitoring of the position of the conductive telescopic shaft 24.

[0049] The lower end of the conductive telescopic shaft 24 is provided with a contact frame 28. The contact frame 28 is hinged to the spring hinge seat 27. The upper end of the spring hinge seat 27 is fixedly connected with a power-on frame 26. The upper end of the power-on frame 26 is fixed to the power-on seat 25. The conductive telescopic shaft 24 is relatively movable with respect to the contact frame 28.

[0050] The circuit control section 20 includes a first track frame 31, a main circuit breaker 32, a second track frame 33, a connecting wire 34, and branch circuit breakers 35. The main circuit breaker 32 is fixedly installed on the first track frame 31. The lower end of the main circuit breaker 32 is connected to the branch circuit breakers 35 through the connecting wire 34. The branch circuit breakers 35 are limited and arranged on the second track frame 33. Electric energy reaches different branch circuit breakers 35 through the main circuit breaker 32 and the connecting wire 34. Then, the branch circuit breakers 35 are connected to the wiring connection base 36 through wires to conduct the electric energy transfer work. The first track frame 31 and the second track frame 33 facilitate the installation of the main circuit breaker 32 and the branch circuit breakers 35. The mutual inductance processing unit 21 and the insulation protection bracket 22 are located at the side ends of the connecting wire 34. Among them, the first current transformer 23 in the mutual inductance processing unit 21 can sense the current of the connecting wire 34. When a leakage problem occurs, the magnetic field on the first current transformer 23 will change at this time, which is fed back to the circuit board base 30. The circuit board base 30 analyzes it and can control the movement of the magnetic block in the conductive telescopic shaft 24. At this time, the infrared detector 29 can sense the position of the magnetic block on the conductive telescopic shaft 24. At the same time, when the magnetic block descends to the bottom position, it can contact the contact frame 28. At this time, the energizing base 25 can form a loop through the energizing frame 26, the spring hinge seat 27, the contact frame 28, and the magnetic block. The energizing base 25 conducts induction. The contact frame 28 and the infrared detector 29 are used for the feedback processing of larger leakage problems. When there is a minor leakage, the circuit board base 30 will not conduct too much current at this time, and the conductive telescopic shaft 24 will not generate a large magnetic field. The settings of the contact frame 28 and the infrared detector 29 are used to confirm larger leakage problems and then feedback to the first control base 5 and the second control base 6, so as to control the branch circuit breakers 35 to close. When multiple branch circuit breakers 35 have problems, the main circuit breaker 32 is controlled to close.

[0051] The disconnection and connection processing structure 9 includes a wiring connection base 36, a disconnection and connection control component 37, and an insulation support plate 38. The wiring connection base 36 is electrically connected to the disconnection and connection control component 37, and the lower end of the disconnection and connection control component 37 is supported by the insulation support plate 38.

[0052] The disconnection control component 37 includes an electric controller 39, a hinged support base 40, an electro-hydraulic rod 41, a docking adjustment hinge frame 42, a position detector 43, a magnetic block 44, and a second mutual inductor 45. At the front end of the combined wire seat 52, a docking line seat 50 is connected in communication. An elastic fastening shaft 51 is installed on the docking line seat 50. At the front end of the docking line seat 50, a live wire 46 is connected in communication. A neutral wire 47 is provided at the side end of the live wire 46. At the upper ends of the live wire 46 and the neutral wire 47, a docking combined connecting frame 49 is fixedly sleeved. The upper end of the docking combined connecting frame 49 is fixedly connected with a mating hinged top block 48. The upper end of the mating hinged top block 48 is hinged with a docking adjustment hinge frame 42. An electro-hydraulic rod 41 is installed at the upper end of the docking adjustment hinge frame 42. The upper end of the electro-hydraulic rod 41 is hinged with the hinged support base 40. The electric controller 39 is installed at the upper end of the hinged support base 40. The live wire 46 and the neutral wire 47 are wound and penetrated through the second mutual inductor 45. A magnetic block 44 is telescopically connected to the upper end of the second mutual inductor 45. The position detector 43 is provided on the magnetic block 44. The position detector 43 is used to detect the position of the magnetic block 44, and the position detector 43 is electrically connected to the electric controller 39. The electric controller 39 controls the telescopic movement of the electro-hydraulic rod 41, thereby driving the docking adjustment hinge frame 42 and the mating hinged top block 48 to move. The live wire 46 and the neutral wire 47 pass through the second mutual inductor 45, and current induction is performed through the second mutual inductor 45. When a leakage problem occurs, a magnetic field can be generated to control the magnetic block 44 to descend. The position detector 43 detects the magnetic block 44. After detecting that the magnetic block 44 has descended, the electric controller 39 can actively control the electro-hydraulic rod 41 to extend. The lower end of the electro-hydraulic rod 41 is hinged with the mating hinged top block 48 through the docking adjustment hinge frame 42, thereby pushing the mating hinged top block 48 to move, so that the docking combined connecting frame 49 drives the live wire 46 and the neutral wire 47 to move. At this time, the live wire 46 and the neutral wire 47 can be separated from the docking line seats 50 on both sides to achieve the purpose of opening the circuit. After the maintenance is completed, the live wire 46 and the neutral wire 47 can be docked with the docking line seats 50. By pressing the elastic fastening shaft 51, limiting can be performed, and under the action of a relatively large longitudinal force on the elastic fastening shaft 51, it can lose its effect, thereby facilitating the subsequent disconnection control work.

[0053] The wiring connection seat 36 and the combined wire seat 52 are electrically connected. The first track frame 31 and the second track frame 33 are fixedly connected to the cabinet body 14. The circuit board seat 30 is fixedly centered on the insulating protection bracket 22, and the rear end of the insulating protection bracket 22 is fixedly connected to the cabinet body 14.

[0054] The working principle is as follows: When in use, the circuits in the power distribution cabinet structure 1 can be connected to the first control base 5 and the second control base 6 in the control cabinet 4. At this time, the display screen 2 can display the status, and at the same time, the voltmeter 3 works to display the voltage status. The rear end of the power distribution cabinet structure 1 is protected by the first insulation protection frame 7 and the second insulation protection frame 8 for the disconnection and connection processing structure 9. The disconnection and connection processing structure 9 can pass through the first insulation protection frame 7 and the second insulation protection frame 8 to be connected to external electrical equipment. The cabinet door 11 can be flipped and adjusted to adjust the power distribution components 10. The ventilation base 17 in the power distribution components 10 is communicated with the cabinet body 14 and the ventilation seat 13. The upper end of the ventilation seat 13 is communicated with the exhaust pipe 12, which is convenient for heat dissipation and ventilation inside the power distribution components 10. The lower end of the leakage protection mechanism 15 is provided with a ground row 16 and a zero row 18, which is convenient for wiring. The setting of the leakage protection mechanism 15 can distribute electric energy, and the circuit control part 20 is used for specific distribution. The setting of the leakage detection part 19 can perform current induction, so as to control the disconnection of the circuit control part 20. Electric energy passes through the main circuit breaker 32 through the connecting wire 34 to different branch circuit breakers 35. Then, the branch circuit breaker 35 is connected to the wiring connection seat 36 through the wire to perform the transmission of electric energy. The first track frame 31 and the second track frame 33 are convenient for the installation of the main circuit breaker 32 and the branch circuit breakers 35. The mutual inductance processing unit 21 and the insulation protection bracket 22 are located at the side end of the connecting wire 34. Among them, the first mutual inductor 23 in the mutual inductance processing unit 21 can perform current induction on the connecting wire 34. When a leakage problem occurs, the magnetic field on the first mutual inductor 23 will change at this time, which is fed back to the circuit board seat 30. The circuit board seat 30 analyzes and can control the movement of the magnetic block in the conductive telescopic shaft 24. At this time, the infrared detector 29 can sense the position of the magnetic block on the conductive telescopic shaft 24. At the same time, when the magnetic block descends to the bottom position, it can contact the contact frame 28. At this time, the energized seat 25 can form a loop through the energizing frame 26, the spring hinge seat 27, the contact frame 28 and the magnetic block. The energized seat 25 performs induction, and the contact frame 28 and the infrared detector 29 are used for the feedback processing of larger leakage problems. When there is a small leakage, the circuit board seat 30 will not conduct too much current at this time, and the conductive telescopic shaft 24 will not generate a large magnetic field. The setting of the contact frame 28 and the infrared detector 29 is used to confirm larger leakage problems, and then feedback to the first control base 5 and the second control base 6, so as to control the branch circuit breaker 35 to close. When multiple branch circuit breakers 35 have problems, control the main circuit breaker 32 to close. When the equipment fails, the disconnection and connection processing structure 9 is used as a remedial measure. The live wire 46 and the neutral wire 47 pass through the second mutual inductor 45, and current induction is performed through the second mutual inductor 45. When a leakage problem occurs, a magnetic field can be generated to control the magnetic block 44 to descend. The position detector 43 detects the magnetic block 44. After detecting the descent of the magnetic block 44, it can actively control the electro-hydraulic rod 41 to extend through the electric controller 39,The lower end of the electro-hydraulic rod 41 is hinged to the mating articulated top block 48 through the docking adjustment hinge bracket 42, thereby driving the mating articulated top block 48 to move, so that the docking combined connecting frame 49 drives the live wire 46 and the neutral wire 47 to be displaced. At this time, the live wire 46 and the neutral wire 47 can be separated from the docking line seats 50 on both sides to achieve the purpose of opening the circuit. After the maintenance is completed, the live wire 46 and the neutral wire 47 can be docked with the docking line seats 50. By pressing the elastic fastening shaft 51, limiting can be carried out, and under the action of a relatively large longitudinal force on the elastic fastening shaft 51, it can lose its function, thus facilitating the subsequent opening control work and completing the work.

[0055] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leakage protection device for a low-voltage power distribution cabinet, characterized in that: It includes a power distribution cabinet structure (1), a display screen (2), a voltmeter (3), a control cabinet (4), a first control base (5), a second control base (6) and a first insulation protection frame (7). The side end of the power distribution cabinet structure (1) is electrically connected to the control cabinet (4), and the control cabinet (4) is equipped with a display screen (2) and a voltmeter (3). The display screen (2) and the voltmeter (3) are used for displaying the status of the power distribution cabinet structure (1). The control cabinet (4) is also provided with a first control base (5) and a second control base (6) for automatic monitoring and processing of the power distribution cabinet structure (1). The rear end of the power distribution cabinet structure (1) is electrically connected to a disconnection and connection processing structure (9). The disconnection and connection processing structure (9) conducts current and actively disconnects the circuit at the same time. The disconnection and connection processing structure (9) is provided with a first insulation protection frame (7) and a second insulation protection frame (8). The first insulation protection frame (7) and the second insulation protection frame (8) insulate and cover the disconnection and connection processing structure (9). The power distribution cabinet structure (1) is connected to the electrical equipment through the disconnection and connection processing structure (9). The rear end of the power distribution cabinet structure (1) is fixed to the first insulation protection frame (7) and the second insulation protection frame (8). The power distribution cabinet structure (1) includes a power distribution component (10) and a cabinet door (11). The front end of the power distribution component (10) is flip-connected to the cabinet door (11). The power distribution component (10) includes a cabinet body (14) and a leakage protection mechanism (15). The leakage protection mechanism (15) is arranged inside the cabinet body (14). The leakage protection mechanism (15) includes a leakage detection part (19) and a circuit control part (20). The leakage detection part (19) is arranged at the central position of the circuit control part (20). The leakage detection part (19) monitors the leakage of the circuit control part (20). The leakage detection part (19) includes a mutual inductance processing unit (21) and an insulation protection bracket (22). The mutual inductance processing unit (21) is fixedly arranged at the center of the insulation protection bracket (22). The mutual inductance processing unit (21) includes a first current transformer (23), a conductive telescopic shaft (24), a power-on seat (25), a power-on frame (26), a spring hinge seat (27), a contact frame (28), an infrared detector (29) and a circuit board seat (30). The lower end of the first current transformer (23) is provided with a conductive telescopic shaft (24). The conductive telescopic shaft (24) can be telescopically controlled. The conductive telescopic shaft (24) is electrically connected to the circuit board seat (30), and the first current transformer (23) is also electrically connected to the circuit board seat (30). The bottom of the circuit board seat (30) is provided with an infrared detector (29). The infrared detector (29) is used for optical monitoring of the position of the conductive telescopic shaft (24). The lower end of the conductive telescopic shaft (24) is provided with a contact frame (28). The contact frame (28) is hinged to the spring hinge seat (27). The upper end of the spring hinge seat (27) is fixedly connected to the power-on frame (26). The upper end of the power-on frame (26) is fixed to the power-on seat (25). The conductive telescopic shaft (24) is relatively movable with respect to the contact frame (28).

2. The leakage protection device for a low-voltage power distribution cabinet according to claim 1, wherein: The distribution component (10) further includes an exhaust pipe (12), a ventilation seat (13), and a neutral bar (18). The lower end of the exhaust pipe (12) communicates with the ventilation seat (13), and the lower end of the ventilation seat (13) communicates with the cabinet body (14). A ground bar (16) and a neutral bar (18) are provided at the lower end of the leakage protection mechanism (15) for connecting the neutral line and the ground line. A ventilation base (17) is provided at the bottom of the cabinet body (14), and the ventilation base (17) communicates with the ventilation seat (13) and the exhaust pipe (12) through the cabinet body (14). The circuit control part (20) includes a first rail rack (31), a main circuit breaker (32), a second rail rack (33), a connecting wire (34), and a branch circuit breaker (35). The main circuit breaker (32) is fixedly installed on the first rail rack (31), and the lower end of the main circuit breaker (32) is connected to the branch circuit breaker (35) through the connecting wire (34). The branch circuit breaker (35) is limited and arranged on the second rail rack (33).

3. The leakage protection device for a low-voltage power distribution cabinet according to claim 2, characterized in that: The disconnection and connection processing structure (9) includes a wiring connection seat (36), a disconnection and connection control component (37), and an insulating support plate (38). The wiring connection seat (36) is electrically connected to the disconnection and connection control component (37), and the lower end of the disconnection and connection control component (37) is supported by the insulating support plate (38).

4. A leakage protection device for a low-voltage power distribution cabinet according to claim 3, characterized in that: The disconnection and connection control component (37) includes an electric controller (39), a hinged support seat (40), an electric control hydraulic rod (41), a docking adjustment hinge frame (42), a position detector (43), a magnetic block (44), and a second current transformer (45). A docking line seat (50) is communicated and provided at the front end of the combined line seat (52). An elastic fastening shaft (51) is installed on the docking line seat (50). A live wire (46) is communicated and connected to the front end of the docking line seat (50). A neutral line (47) is provided at the side end of the live wire (46). A docking combined connecting frame (49) is fixedly sleeved on the upper ends of the live wire (46) and the neutral line (47). A mating hinged top block (48) is fixedly connected to the upper end of the docking combined connecting frame (49). The docking adjustment hinge frame (42) is hinged to the upper end of the mating hinged top block (48). The electric control hydraulic rod (41) is installed at the upper end of the docking adjustment hinge frame (42). The upper end of the electric control hydraulic rod (41) is hinged to the hinged support seat (40). The electric controller (39) is installed at the upper end of the hinged support seat (40). The live wire (46) and the neutral line (47) are wound and penetrated through the second current transformer (45). A magnetic block (44) is telescopically connected to the upper end of the second current transformer (45). A position detector (43) is provided on the magnetic block (44). The position detector (43) is used to detect the position of the magnetic block (44), and the position detector (43) is electrically connected to the electric controller (39). The electric controller (39) controls the telescopic movement of the electric control hydraulic rod (41), thereby driving the docking adjustment hinge frame (42) and the mating hinged top block (48) to move.

5. The leakage protection device for a low-voltage power distribution cabinet according to claim 4, characterized in that: The wiring connection seat (36) and the combined wire seat (52) are electrically connected. The first track frame (31) and the second track frame (33) are fixedly connected to the cabinet body (14). The circuit board seat (30) is fixedly centered on the insulation protection bracket (22), and the rear end of the insulation protection bracket (22) is fixedly connected to the cabinet body (14).

6. A method for a leakage protection device of a low-voltage power distribution cabinet, using a leakage protection device of a low-voltage power distribution cabinet as described in claim 5, characterized in that, The method includes the following steps: S1. First, the lines in the power distribution cabinet structure (1) can be connected to the first control seat (5) and the second control seat (6) in the control cabinet (4). The display screen (2) can display the status, and the voltmeter (3) performs the voltage status display work. The rear end of the power distribution cabinet structure (1) is protected by the first insulation protection frame (7) and the second insulation protection frame (8) for the disconnection processing structure (9). The disconnection processing structure (9) can pass through the first insulation protection frame (7) and the second insulation protection frame (8) to connect with external electrical equipment. Electric energy reaches different branch circuit breakers (35) through the main circuit breaker (32) and the connecting wire (34). S2. Then, the branch circuit breaker (35) is connected to the wiring connection seat (36) through a wire to perform the electric energy transfer work. The first current transformer (23) in the mutual inductance processing unit (21) can sense the current of the connecting wire (34). When a leakage problem occurs, the magnetic field on the first current transformer (23) will change at this time, which is fed back to the circuit board seat (30) to control the movement of the magnetic block in the conductive telescopic shaft (24). The infrared detector (29) can sense the position of the magnetic block on the conductive telescopic shaft (24). When the magnetic block descends to the bottom position, it can contact the contact frame (28). At this time, the energized seat (25) can form a loop through the energizing frame (26), the spring hinge seat (27), the contact frame (28) and the magnetic block. The energized seat (25) conducts induction, and the contact frame (28) and the infrared detector (29) are used for the feedback processing of the leakage problem and are fed back to the first control seat (5) and the second control seat (6), so as to control the branch circuit breaker (35) to close. S3. When the leakage protection mechanism (15) fails, a magnetic field can be generated through the second current transformer (45) to control the descent of the magnetic block (44). The position detector (43) detects the magnetic block (44). After detecting the descent of the magnetic block (44), it can actively control the electro-hydraulic rod (41) to extend through the electric controller (39). S4. Finally, the lower end of the electro-hydraulic rod (41) is hinged to the mating hinge top block (48) through the docking adjustment hinge frame (42), so as to push the mating hinge top block (48) to move, so that the docking combined link (49) drives the live wire (46) and the neutral wire (47) to move. At this time, the live wire (46) and the neutral wire (47) can be separated from the docking line seats (50) on both sides to achieve the purpose of opening the circuit.

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