CN113539758A - Automatic closing module of circuit breaker - Google Patents
Automatic closing module of circuit breaker Download PDFInfo
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- CN113539758A CN113539758A CN202010306968.2A CN202010306968A CN113539758A CN 113539758 A CN113539758 A CN 113539758A CN 202010306968 A CN202010306968 A CN 202010306968A CN 113539758 A CN113539758 A CN 113539758A
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- 230000007246 mechanism Effects 0.000 claims abstract description 264
- 238000012544 monitoring process Methods 0.000 claims abstract description 80
- 238000001514 detection method Methods 0.000 claims description 61
- 238000011084 recovery Methods 0.000 claims description 6
- 230000003111 delayed effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 23
- 230000001960 triggered effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 3
- 208000025274 Lightning injury Diseases 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 210000004258 portal system Anatomy 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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- 230000001360 synchronised effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
- H01H71/521—Details concerning the lever handle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/66—Power reset mechanisms
- H01H71/70—Power reset mechanisms actuated by electric motor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H2071/109—Operating or release mechanisms with provisions for selecting between automatic or manual reset
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Abstract
An automatic closing module of a circuit breaker comprises an auxiliary shell, an auxiliary handle, a control panel and a driving mechanism, wherein the auxiliary handle, the control panel and the driving mechanism are respectively arranged in the auxiliary shell, the auxiliary handle is used for being in linkage connection with an operating handle of a circuit breaker unit, the auxiliary shell is internally provided with a switching-off state monitoring mechanism matched with the auxiliary handle, the control panel is provided with a control unit, the switching-off state monitoring mechanism and the driving mechanism are respectively connected with the control unit of the control panel, the auxiliary handle is driven by the operating handle to trigger the switching-off state monitoring mechanism when the circuit breaker unit trips, the control unit controls the driving mechanism to push the auxiliary handle to drive the operating handle to switch on the circuit breaker unit after receiving a switching-off signal of the circuit breaker transmitted by the switching-off state monitoring mechanism, after the temporary fault of the line is removed, the breaker unit is automatically switched on, the power supply of the power system is timely recovered, and the reliability of the power supply of the power system is ensured.
Description
Technical Field
The invention relates to the field of low-voltage electric appliances, in particular to an automatic closing module of a circuit breaker.
Background
The circuit breaker is an important component of the electrical appliance industry, when the circuit works normally, the circuit breaker can close and open the circuit, and when the circuit breaks down, the circuit breaker can automatically cut off the circuit, so that the safety of workers and the normal operation of equipment are prevented from being endangered due to the circuit faults. According to the demand of power grid intellectualization of China, the circuit breaker is required to have a remote control function in some working occasions, so that a miniature circuit breaker or a residual current circuit breaker (RCBO, RCCB) with an automatic switching-on function is produced at the same time, an electric operation module and a circuit breaker unit are combined for use, and the circuit breaker can be driven to carry out remote control functions such as reclosing through the electric operation module after a line fault is eliminated.
Although the existing auxiliary module can remotely switch on the circuit breaker, the circuit breaker can not be automatically switched on due to manual operation after the circuit fault is removed, the circuit faults such as lightning stroke, wind damage and the like are temporary under most conditions, the insulation performance (insulator and air gap) of the circuit after the circuit breaker is tripped can be quickly recovered, if the circuit breaker can not be automatically switched on after the circuit is recovered, the circuit breaker can be remotely switched on due to manual operation, and the reliability of power supply of an electric power system can be influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the automatic closing module of the circuit breaker, which has a simple structure and high reliability.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an automatic switching-on module of circuit breaker, its includes auxiliary housing and installs auxiliary handle, control panel and actuating mechanism in auxiliary housing respectively, auxiliary handle is used for being connected with the operating handle linkage of circuit breaker unit, be equipped with in auxiliary housing with auxiliary handle complex separating brake state monitoring mechanism, the control panel on be equipped with the control unit, separating brake state monitoring mechanism and actuating mechanism are connected with the control unit of control panel respectively, drive auxiliary handle through operating handle when circuit breaker unit tripping operation and trigger separating brake state monitoring mechanism, the control unit is after receiving the circuit breaker separating brake signal of separating brake state monitoring mechanism conveying, control actuating mechanism promotes auxiliary handle and drives operating handle and makes the circuit breaker unit switch-on.
Preferably, the automatic closing module is further provided with a mode switching mechanism, the mode switching mechanism is connected with the control unit of the control panel and is used for setting the automatic closing module to be in a manual mode or an automatic mode, and if the mode switching mechanism is set to be in the manual mode, the control unit does not automatically control the driving mechanism to close the circuit breaker unit; if the mode switching mechanism is set to be in the automatic mode, the switching-off state monitoring mechanism detects that the circuit breaker is in the switching-off state, and after a certain delay time t1 is delayed, the control unit automatically controls the driving mechanism to push the auxiliary handle to drive the operating handle to enable the circuit breaker unit to be switched on.
Preferably, the mode switching mechanism of the automatic closing module is in an automatic mode, and is further provided with a self-locking state, the control unit enters the self-locking state when detecting that the circuit breaker is switched from the closing state to the opening state m times through the opening state monitoring mechanism within a certain fault monitoring time t2, the circuit breaker unit is not automatically closed any more, and m is greater than 1.
Preferably, when the automatic closing module enters the self-locking state, the control unit monitors that the breaker is switched from the opening state to the closing state through the opening state monitoring mechanism, and the automatic closing module releases the self-locking state after the closing state lasts for at least a certain self-locking recovery time t 3.
Preferably, the control unit stores the opening time record of each time after detecting that the breaker is switched from the closing state to the opening state through the opening state monitoring mechanism each time;
the control unit acquires the state of the mode switching mechanism, and if the mode switching mechanism is in a manual mode, closing operation is not automatically executed;
if the automatic mode is adopted, the latest m-number of opening time records are read, the time difference between the latest first opening time and the latest m-number of opening time is compared with the fault monitoring time t2, if the opening time difference is greater than or equal to the fault monitoring time t2, the control unit waits for the delay time t1, the automatic control driving mechanism pushes the auxiliary handle to drive the operating handle to close the circuit breaker unit, and if the opening time difference is less than the fault monitoring time t2, the circuit breaker unit enters a self-locking state and is not automatically closed.
Preferably, the auxiliary handle comprises a pivot part, and a driving part and a linkage part which are respectively arranged at two ends of the pivot part, the linkage part is connected with the operating handle of the circuit breaker unit through a linkage piece, the top end of the driving part is connected with the pivot part, the bottom end of the driving part is matched with the opening state monitoring mechanism, and the side surface of the driving part is matched with the driving mechanism.
Preferably, the opening state monitoring mechanism is a microswitch arranged on the control panel, and the top end of the microswitch is provided with a deflector rod extending to the rotating path of the driving part; or the opening state monitoring mechanism comprises a circuit board vertically connected with the control board and a microswitch installed on the side face of the circuit board, the circuit board is arranged opposite to the end face of the bottom end of the driving part, and the microswitch is arranged between the circuit board and the end face of the bottom end of the driving part.
Preferably, the driving mechanism comprises a motor connected with the control unit of the control panel, a screw connected with the motor, a first gear engaged with the screw, a second gear engaged with the first gear, a third gear engaged with the second gear, and a connecting rod hinged to the eccentric position of the third gear, and the auxiliary handle is pushed by the connecting rod to drive the operating handle to close the circuit breaker unit.
Preferably, an initial position detection mechanism and a switching-on position detection mechanism which are respectively matched with the third gear are arranged on the periphery of the third gear, the initial position detection mechanism and the switching-on position detection mechanism are respectively connected with a control unit of the control panel, a driving boss which is respectively matched with the initial position detection mechanism and the switching-on position detection mechanism is arranged on the side face of the third gear, and the initial position detection mechanism and the switching-on position detection mechanism respectively extend to the rotating path of the driving boss to be matched with each other.
Preferably, the auxiliary module is also internally provided with a tripping piece connected with the circuit breaker unit and a tripping detection mechanism matched with the tripping piece, and the third gear is provided with a tripping boss matched with the tripping piece and drives the third gear to rotate reversely to push the tripping piece so that the tripping piece drives the circuit breaker unit to trip.
Preferably, the initial position detection mechanism, the closing position detection mechanism and the tripping detection mechanism are microswitches respectively, the closing position detection mechanism and the opening state monitoring mechanism are arranged on two sides of the initial position detection mechanism oppositely, and the tripping detection mechanism is arranged above the initial position detection mechanism; the initial position detection mechanism, the closing position detection mechanism and the tripping detection mechanism are arranged on the side face of one side of the control panel, and the opening state monitoring mechanism is arranged on the side face of the other side of the control panel.
According to the automatic closing module of the circuit breaker, the opening state monitoring mechanism is arranged in the automatic closing module, the opening state monitoring mechanism corresponds to the opening position or the closing position of the auxiliary handle, whether the circuit breaker unit is in the opening state or not is detected through the opening state monitoring mechanism, and when the circuit breaker unit is detected to be in the opening state, the control driving mechanism can be slightly delayed to enable the circuit breaker unit to be automatically closed again, so that the circuit breaker unit is automatically closed after the temporary fault of a line is removed, the power supply of a power system is timely recovered, and the reliability of the power supply of the power system is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a circuit breaker according to an embodiment of the present invention;
FIG. 2 is an exploded view of the power take-off mechanism according to the embodiment of the present invention;
FIG. 3 is a first embodiment of the power-taking mechanism of the present invention;
FIG. 4 is a second embodiment of the power-taking mechanism of the present invention;
FIG. 5 is a schematic diagram of the power-taking mechanism and the wiring mechanism according to the embodiment of the present invention;
FIG. 6 is another schematic diagram of the power mechanism and the wiring mechanism according to the embodiment of the present invention;
FIG. 7 is a schematic view of the construction of a housing according to an embodiment of the present invention;
FIG. 8 is a schematic view of the housing and second housing of an embodiment of the present invention;
FIG. 9 is a schematic view of the assembled locking mechanism of an embodiment of the present invention;
FIG. 10 is a schematic view of the assembly of a locking mechanism according to an embodiment of the invention;
FIG. 11 is a schematic structural view of a second housing according to the embodiment of the present invention;
FIG. 12 is a schematic structural view of a locking mechanism according to an embodiment of the present invention;
FIG. 13 is a schematic view of the engagement of a locking mechanism with a first housing and a second housing in accordance with an embodiment of the present invention;
FIG. 14 is a schematic view of the engagement of a locking mechanism with a second housing in accordance with an embodiment of the present invention;
FIG. 15 is a schematic structural diagram of an electric operating module according to an embodiment of the present invention;
fig. 16 is an operation process of an auxiliary handle of the automatic closing module according to the embodiment of the present invention;
fig. 17 is a schematic structural diagram of the automatic closing module according to the embodiment of the present invention after the control board is hidden;
fig. 18 is a schematic structural diagram of a control board according to an embodiment of the present invention.
Detailed Description
The following further describes a specific embodiment of the automatic closing module of the circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 18. The auto-close module of the circuit breaker of the present invention is not limited to the description of the following embodiments.
As shown in fig. 1-2, the circuit breaker of the present invention includes a circuit breaker unit 100 and an auxiliary module 200 disposed at one side of the circuit breaker unit 100, the circuit breaker unit 100 includes a first housing 300 and a wiring mechanism 700 disposed in the first housing 300, the wiring mechanism 700 includes a wiring holder 720 and a wiring screw 710 in threaded connection with the wiring holder 720, the auxiliary module 200 includes a second housing 400 and a control board 220 and an actuator respectively disposed in the second housing 400, the first housing 300 and the second housing 400 are fixed by a connection structure, a power taking mechanism 500 is disposed at one end of the first housing 300 and one end of the second housing 400, and the control board 220 of the auxiliary module 200 takes power from the wiring mechanism 700 of the circuit breaker unit 100 by the power taking mechanism 500.
As shown in fig. 5 to 6, the power taking mechanism 500 includes a power taking sheet 510 electrically connected to the wiring mechanism 700 of the circuit breaker unit 100, a power transmission mechanism electrically connected to the control board 220 of the auxiliary module 200, and a connection mechanism connected between the power taking sheet 510 and the power transmission mechanism, the power taking sheet 510 is in a U-shaped structure, and after the power taking sheet 510 in the U-shaped structure is sleeved on two sides of a screw 711 of a wiring screw 710, a nut 712 of the wiring screw 710 is screwed to press the power taking sheet 510 onto a wiring holder 720.
According to the power taking structure of the circuit breaker, the power taking sheet 510 of the U-shaped structure is sleeved on the two sides of the screw rod 711 of the wiring screw 710, so that the power taking sheet 510 is prevented from being twisted when the wiring screw 710 is screwed, the power taking sheet 510 and the wiring mechanism 700 are ensured to be reliably connected, the contact area between the power taking sheet 510 of the U-shaped structure and the wiring mechanism 700 is larger, and the contact resistance is smaller.
Further, the power transmission device further comprises a cover shell 550 used for shielding the power taking mechanism 500, a first installation buckle 551 connected with the first shell 300 is arranged at one end of the cover shell 550, a second installation buckle 552 connected with the second shell 400 is arranged at the other end of the cover shell 550, a power transmission hole 560 corresponding to the power transmission mechanism is arranged on the second shell 400, one side of the power transmission hole 560 is used for avoiding the power transmission mechanism, and the other side of the power transmission hole 560 is in limit fit with the second installation buckle 552.
As shown in fig. 12 to 14, the connection structure of the circuit breaker of the present invention is used for connecting between a first case 300 of a circuit breaker unit 100 and a second case 400 of an auxiliary module 200, the connection structure includes a locking mechanism 600 (fig. 10), the locking mechanism 600 includes a buckle plate 620 fitted with the first case 300, a first locking buckle 610 fitted with the second case 400, and a connection plate 630 connected between the first locking buckle 610 and the buckle plate 620, the second case 400 and the first case 300 are respectively provided with a first locking hole 410 and a receptacle 310, the first locking buckle 610 of the locking mechanism 600 can be inserted into the first locking hole 410 to be fixed with the second case 400, and the buckle plate 620 can be inserted into the receptacle 310 to press the first case 300 against the second case 400.
According to the connecting structure of the circuit breaker, the locking mechanism 600 is inserted into the first locking hole 410 through the first locking buckle 610 and is fixed with the second shell 400, the buckle plate 620 is inserted into the jack 310 to press the first shell 300 on the second shell 400, the first shell 300 or the second shell 400 can be prevented from being directly connected through excessive buckle structures, the connection is reliable, the assembly and disassembly are convenient, the universality is high, and the connecting structure can be suitable for circuit breaker shells with different sizes.
Fig. 1 to 8 show a preferred embodiment of a power-taking structure of a circuit breaker according to the present invention, in which a circuit breaker unit 100 of this embodiment is an earth leakage circuit breaker, and an auxiliary module 200 is an electrical operation module for driving the circuit breaker unit 100 to close. The power taking structure of the circuit breaker comprises a power taking mechanism 500 for taking power from the wiring mechanism 700 of the circuit breaker unit 100 and supplying power to the auxiliary module 200, wherein the power taking mechanism 500 comprises a power taking sheet 510 electrically connected with the wiring mechanism 700 of the circuit breaker unit 100, a power transmission mechanism electrically connected with the control board 220 of the auxiliary module 200 and a connecting mechanism connected between the power taking sheet 510 and the power transmission mechanism.
As shown in fig. 5 to 6, the two wiring mechanisms 700 have substantially the same structure, the wiring mechanism 700 includes a wiring base 720 and a wiring screw 710, the wiring base 720 includes a wiring board 722 and a movable wiring frame 721, one end of the wiring board 722 is inserted into the wiring frame 721 for fixing a wire, the other end of the wiring board 722 is located outside the wiring frame 721 for fixing the power taking chip 510, the wiring screw 710 passes through the wiring board 722 located outside the wiring frame 721 and is connected with the wiring frame 721 by screw threads, and the wiring frame 721 can be driven to move close to each other by rotating the wiring screw 710, so that the wiring frame 721 and the wiring screw 710 respectively press the wire and the power taking chip 510 at two ends of the wiring board 722.
Specifically, the wiring board 722 is in a U-shaped structure, the wiring board 722 includes an upper wiring portion 7221 and a lower wiring portion 7222 which are oppositely arranged, and a side wiring portion 7223 which is connected between the upper wiring portion 7221 and one end of the lower wiring portion 7222, the lower wiring portion 7222 is inserted into the inner side of the wiring frame 721 and is oppositely arranged with respect to the side wall of the bottom side of the wiring frame 721, when the wiring frame 721 moves close to the wiring screw 710, the side wall of the bottom side of the wiring frame 721 is driven to press the wire against the bottom side of the lower wiring portion 7222 for fixation, the upper wiring portion 7221 is located above the wiring frame 721, the screw 711 of the wiring screw 710 passes through the upper wiring portion 7221 and is in threaded connection with the side wall of the top side of the wiring frame 721, the nut 712 is driven to press the pick-up strip 510 against the top side of the upper wiring portion 7221 for fixation when the wiring screw 710 moves close to the wiring frame 721. Regardless of the thickness of the wire 531 or the absence of the wire 531, the nut 712 can be always in close contact with the power strip 510 after being tightened.
As shown in fig. 2-3, in the first embodiment of the power taking mechanism 500, the connection mechanism of this embodiment is a circuit board 530 connected to the power taking piece 510, the power transmission mechanism is a pin (not shown) disposed on the circuit board 530 or a wire (not shown) welded to the circuit board 530, a connection hole 531 for mounting the pin or for welding the wire 531 is disposed on the circuit board 530, one end of the pin and the wire 531 is firstly passed through the connection hole 531 and then welded to the circuit board 530, when the power transmission mechanism is the wire 531, the other end of the wire 531 is welded to the control board 220 of the auxiliary module 200, and when the power transmission mechanism is the pin, a socket matched with the pin is disposed on the control board 220. In this embodiment, preferably, a pin is used, and the power-taking mechanism 500 is inserted into the wiring mechanism 700 and the circuit board of the auxiliary module 200 at one time to realize connection.
Further, the power-taking sheet 510 includes two power-taking arms 511 arranged in parallel, and a connecting arm 512 connected between one ends of the two power-taking arms 511, two fixing arms 513 are arranged on the other side of the connecting arm 512 opposite to the two power-taking arms 511, two fixing holes 5130 corresponding to the fixing arms 513 are arranged on the circuit board 530, and the two fixing arms 513 are welded to the circuit board 530 after passing through the fixing holes 5130 (fig. 8). Get electric piece 510 and weld with circuit board 530 respectively through two fixed arms 513, not only have convenient and reliable characteristics of connection, prevent moreover to get electric piece 510 and appear cracked problem, reduce the appearance of returning the factory to maintain.
As shown in fig. 4 to 5, in the second embodiment of the power taking mechanism 500, the power transmitting mechanism in this embodiment is the plug 520, the connecting mechanism is the wire 531 connected between the plug 520 and the power taking piece 510, the control board 220 of the auxiliary module 200 is provided with the socket 540 matched with the plug 520, and the second housing 400 of the auxiliary module 200 is provided with the power transmitting hole 560 for avoiding the plug 520. Of course, the plug 520 may be directly connected to the wiring mechanism 700 of the circuit breaker unit 100 through a wire, and all that is within the scope of the present invention is that the plug is directly connected to the wiring mechanism.
As shown in fig. 7-8, a preferred embodiment of the cover 550 is provided, a first mounting buckle 551 connected to the first housing 300 is disposed at a top corner of one end of the cover 550, a first mounting snap groove 555 (fig. 2) connected to the second mounting buckle 551 is disposed on the first housing 300, a second mounting buckle 552 connected to the second housing 400 is disposed at the other end of the cover 550, a baffle 554 is disposed between the second mounting buckle 552 and the power transmission mechanism correspondingly to the cover 550, a power transmission hole 560 corresponding to the power transmission mechanism is disposed on the second housing 400, and the baffle 554 can be inserted into the second housing 400 through the power transmission hole 560. The second mounting boss 553 provided through the second case 400 through the power transmission hole 560 not only can be more reliably fixed to the housing 550 through the second mounting clip 552, but also the insertion of the baffle 554 into the power transmission control 560 can play a role in dust prevention and insulation.
Further, the first mounting buckle 551 is of a U-shaped structure, the first mounting buckle 551 includes two oppositely disposed supporting members 810, one ends of the two supporting members 810 are respectively connected with the housing 550, the other ends of the two supporting members 810 are respectively provided with a pawl 820 of a barb structure on the side surface away from each other, one side of the power transmission hole 560 is used for avoiding the power transmission mechanism, the inner wall of the second housing 400 is provided with two clamping bosses 830 on the other side of the power transmission hole 560 correspondingly, the two clamping bosses 830 are oppositely disposed on the two sides of the power transmission controller 560, the two supporting members 810 of the first mounting buckle 551 can pass through the two clamping bosses 830, and the pawls 820 on the outer sides of the two supporting members 810 are respectively clamped on the end surfaces of the inner sides of the clamping bosses 830. The first mounting buckle 551 of the U-shaped structure is more reliable after connection, and has the characteristics of uniform stress on two sides during mounting and dismounting, difficult fracture and long service life.
Fig. 9 to 14 show a preferred embodiment of a connection structure of a circuit breaker of the present invention for connecting between a first case 300 of a circuit breaker unit 100 and a second case 400 of an auxiliary module 200.
As shown in fig. 10 to 11, the connection structure of the circuit breaker of the present invention includes a locking mechanism 600 connected between one ends of the first and second housings 300 and 400, a second locking catch 640 connected between the other ends of the first and second housings 300 and 400, and a third locking catch 650 connected between the bottoms of the first and second housings 300 and 400;
the second housing 400 and the first housing 300 are provided with a first locking hole 410 and a jack 310 respectively matched with two ends of the locking mechanism 600, the second locking buckle 640 and the third locking buckle 650 are respectively arranged on the second housing 400, the first housing 300 is provided with a second locking hole 320 and a third locking hole 330 respectively corresponding to the second locking buckle 640 and the third locking buckle 650, and the second locking buckle 640 and the third locking buckle 650 can be respectively clamped into the second locking hole 320 and the third locking hole 330;
the line connecting the insertion hole 310, the second locking hole 320 and the third locking hole 330 on the first casing 300 is triangular, and the line connecting the first locking hole 410, the second locking catch 640 and the third locking catch 650 on the second casing 400 is also triangular, that is, the line connecting the locking mechanism 600, the second locking catch 640 and the third locking catch 650 is triangular.
According to the connecting structure of the circuit breaker, the locking mechanism 600, the second locking buckle 640 and the third locking buckle 650 which are distributed in a triangular structure are adopted, so that the connecting and fixing effects are more reliable, the second locking buckle 640 and the third locking buckle 650 can be assembled firstly during assembly, then the locking mechanism 600 can be assembled, the locking mechanism 600 can be disassembled firstly during disassembly, and the connecting structure has the characteristic of low assembling and disassembling difficulty.
Further, the third locking buckle 650 connected between the bottom of the first housing 300 and the bottom of the second housing 400 is disposed at one end of the bottom of the second housing 400 close to the third locking buckle 640, and the thickness of the third locking buckle 650 gradually decreases along the direction close to the third locking buckle 640, so as to form a buckle face 651 obliquely disposed at the top side of the third locking buckle 650. The obliquely arranged snap face 651 has an assembly guiding function, so that a direction error before the second housing 400 is assembled is prevented, the assembly process can be optimized, the installation is facilitated, and the first housing 300 can be prevented from being damaged in a matching manner. Preferably, the middle portion of the snap surface 651 is bent to a top side to form a chamfered structure, so that the third locking snap 640 can be conveniently connected with the first housing 300, and the difficulty of assembly is further reduced.
Further, the auxiliary module 200 further includes an auxiliary handle 210 connected to the operating handle 110 of the circuit breaker unit 100, a linkage 211 in a U-shaped structure is disposed at one end of the auxiliary handle 210 close to the operating handle 110, and the linkage 211 can be sleeved on the operating handle 110 for limited fit; the end face of the auxiliary handle 210 is provided with a linkage shaft 213 corresponding to the inner side of the linkage piece 211, the operating handle 110 is provided with a linkage groove 214 matched with the linkage shaft 213, and the linkage shaft 213 can be inserted into the linkage groove 214 for limiting.
Preferably, the cross section of the linkage shaft 213 is a cross structure, the circumferential direction of the linkage shaft 213 is respectively provided with a limiting groove 215, and a limiting rib which is in limiting fit with the limiting groove 215 is arranged in the linkage groove 214 of the operating handle 110.
As shown in fig. 7 and 12, the first locking buckle 610 and the first mounting buckle 551 have the same structure, and the first locking buckle 610 and the first mounting buckle 551 each have a U-shaped structure.
The first locking buckle 610 includes two supporting members 810 arranged oppositely, one ends of the two supporting members 810 are connected with the connecting plate 630 respectively, the other ends of the two supporting members 810 are provided with claws 820 in an inverted hook structure on the side surfaces away from each other respectively, the inner wall of the second housing 400 is provided with clamping bosses 830 on the two sides of the first locking hole 410 respectively, the two supporting members 810 of the first locking buckle 610 can pass through the two clamping bosses 830, and the claws 820 on the outer sides of the two supporting members 810 are clamped on the end surfaces of the inner sides of the clamping bosses 830 respectively. The first locking buckle 610 of the U-shaped structure is more reliable after connection, and has the advantages of being even in stress on two sides during installation and disassembly, not easy to break and long in service life.
The circuit breaker unit 100 comprises a thermo-magnetic protection pole 120 and an electric leakage protection pole 130 which are arranged in a stacked mode, wiring mechanisms 500 are arranged at two ends of the thermo-magnetic protection pole 120 and the electric leakage protection pole 130 respectively, the electric leakage protection pole 130 comprises a zero sequence current transformer and an electric leakage protection main loop lead penetrating through the zero sequence current transformer, two ends of the electric leakage protection main loop lead are connected into a circuit through the wiring mechanisms 500 respectively, the thermo-magnetic protection pole 120 comprises a moving contact and a fixed contact which are arranged in a first shell 300 oppositely, an operating mechanism connected with the moving contact, a handle 110 connected with the operating mechanism, a bimetallic strip and a magnetic flux converter matched with the operating mechanism, and the fixed contact and the moving contact are connected into the circuit through the wiring mechanisms 700 at two ends of the first shell 300 respectively;
when the operating mechanism comprises a lock catch and a trip catch which are matched with each other, an operating handle is rotated to drive a moving contact to be in contact with a static contact and conduct a circuit through the operating mechanism, so that switching-on and switching-off are realized, energy is stored for the operating mechanism and balance is kept, a bimetallic strip, a magnetic flux converter and a zero-sequence current transformer drive the lock catch and the trip catch to trip out when overload, short circuit and leakage faults occur in the circuit respectively, the operating mechanism releases energy and drives the static contact and the moving contact to be separated after losing balance, so that the circuit is protected by tripping, when the short circuit or overload fault disappears, the operating handle 110 is required to drive the lock catch and the trip catch to trip out again to realize reclosing, otherwise the operating handle 110 cannot drive the operating mechanism to switch on, the operating mechanism cannot return to a balance state under the stored energy, and the circuit can be effectively protected when the next circuit fault occurs;
the auxiliary module 200 comprises a control panel 220, an actuating mechanism and an auxiliary handle 210 connected with the circuit breaker unit 100, the control panel 220 can drive the actuating mechanism to act under remote control, the actuating mechanism drives the auxiliary handle 210 to act, the auxiliary handle 210 drives the operating handle 130 of the circuit breaker unit 100 to close, the lock catch and the trip catch are buckled again, and manual closing in the field can be avoided. It will be appreciated that the circuit breaker unit 100 may include a plurality of thermo-magnetic poles 120, each connected to a different phase line, and that the circuit breaker unit 100 may have only one or two of the functions of overload, short circuit, and earth leakage protection. In addition, the reclosing and the reclosing of the circuit breaker unit 100 are the same action process, and the rotation directions of the operating handle 110 during the reclosing and the reclosing are the same, and the difference is that the rotation angle of the operating handle 110 during the reclosing and the reclosing is slightly larger, so that the trip can rotate to the upper side of the lock catch, and the trip can be lapped on the lock catch when the operating handle 110 is released, therefore, the electric operating module can play a role of closing besides the reclosing function, and the protection range of the invention also belongs to.
As shown in fig. 15-16, the automatic closing module of the circuit breaker of the present invention is assembled at one side of the circuit breaker unit 100, and includes an auxiliary housing, and an auxiliary handle 210, a control panel 220 and a driving mechanism respectively installed in the auxiliary housing, where the auxiliary handle 210 is used for being linked with the operating handle 110 of the circuit breaker unit 100, an opening state monitoring mechanism 240 matched with the auxiliary handle 210 is installed in the auxiliary housing, the opening state monitoring mechanism 240 and the driving mechanism are respectively connected with the control panel 220, when the circuit breaker unit 100 trips, the operating handle 110 is driven by the operating handle 110 to trigger the opening state monitoring mechanism 240, and when the control unit receives a circuit breaker opening signal transmitted by the opening state monitoring mechanism 240, the driving mechanism is controlled to push the auxiliary handle 210 to drive the operating handle 110 to close the circuit breaker unit 100.
According to the automatic closing module of the circuit breaker, the opening state monitoring mechanism 240 is arranged in the automatic closing module, the opening state monitoring mechanism 240 corresponds to the opening position or the closing position of the auxiliary handle 210, whether the circuit breaker unit 100 is in the opening state or not is detected through the opening state monitoring mechanism 240, and when the circuit breaker unit 100 is detected to be in the opening state, the driving mechanism is controlled to enable the circuit breaker unit 100 to be automatically closed again after a slight delay, so that the circuit breaker unit 100 is automatically closed after a temporary fault of a line is removed, power supply of a power system is timely recovered, and reliability of power supply of the power system is guaranteed.
The automatic closing module of this embodiment need not to reform transform current circuit breaker unit, changes the divide-shut brake state that just can obtain the sound contact of circuit breaker unit 100 through auxiliary template itself, separating brake state monitoring mechanism 240 include the micro-gap switch of being connected with the control unit, micro-gap switch corresponds with the separating brake position or the closing position of auxiliary handle 210, auxiliary handle 210 and the operating handle 110 linkage of circuit breaker unit 100 realize synchronous combined floodgate and separating brake, auxiliary handle 210 rotates the separating brake position along with operating handle 110 during circuit breaker separating brake, auxiliary handle 210 rotates the closing brake position along with operating handle 110 during circuit breaker combined floodgate.
Taking the example that the micro-switch corresponds to the opening position of the auxiliary handle 210, when the auxiliary handle 210 rotates to the opening position, the micro-switch is triggered to indicate the opening state, when the auxiliary handle 210 rotates to the closing position, the micro-switch is not triggered to indicate the closing state, and whether the micro-switch is triggered or not, the state of the micro-switch is fed back to the control unit of the control board 220, so as to determine the opening and closing state of the circuit breaker, that is, the opening state monitoring mechanism 240 can detect the opening state and the closing state of the circuit breaker. Obviously, the microswitch can also be used for indicating the switching-off state when not triggered, and the trigger can also be used for indicating the switching-on state. The micro switch may also correspond to a closed position of the auxiliary handle 210.
In one embodiment, the control board 220 is provided with a control unit, the control unit is a control circuit, the control circuit is connected to the micro switch of the opening state monitoring mechanism 240 through a hardware control circuit, the opening/closing state of the circuit breaker unit 100 is detected, and when the circuit breaker unit 100 is in the opening state, the driving mechanism is driven to close the circuit breaker. In another embodiment, the control unit is a microcontroller MCU, the microcontroller MCU is connected to the switching-off state monitoring mechanism 240, the microcontroller MCU is a microcontroller chip such as a single chip microcomputer or an ARM chip, and the switching-on/off state of the circuit breaker unit 100 is detected by combining software and hardware, and when the circuit breaker unit 100 is in the switching-off state, the driving mechanism is driven to switch on the circuit breaker.
Further, the automatic closing module is further provided with a mode switching mechanism, and the mode switching mechanism is connected with the control unit of the control board 220 and is used for setting the automatic closing module to be in a manual mode or an automatic mode. The mode switching mechanism includes a switch connected to the control unit of the control board 220, and the switch may be a micro switch, a dial switch, an electronic switch, a mechanical switch, or the like, for example, the switch is triggered to indicate an automatic mode, and the non-triggered mode indicates a manual mode. If the mode switching mechanism is set to be in the manual mode, the automatic closing module does not automatically close the circuit breaker, and no matter whether the opening state monitoring mechanism 240 detects that the circuit breaker is in the opening state or not, the control unit does not automatically control the driving mechanism to push the auxiliary handle 210 to drive the operating handle 110 to close the circuit breaker unit 100; if the mode switching mechanism is set to the automatic mode, after the opening state monitoring mechanism 240 detects that the circuit breaker is in the opening state, after a certain delay time t1, the control unit automatically controls the driving mechanism to push the auxiliary handle 210 to drive the operating handle 110 to close the circuit breaker unit 100.
This enables the circuit breaker formed by splicing the automatic closing module and the circuit breaker unit 100 of the present invention to be applied to some occasions requiring stable power supply. For example, the ETC charging system is applied to a portal system, and the business of the ETC charging system can be continuously online only if the ETC portal system provides stable power supply. When the circuit breaker unit 100 is in the open state after fault tripping, in most cases, the line fault (such as lightning stroke, wind damage and the like) is temporary, the insulation performance (insulator and air gap) of the line can be recovered after the circuit breaker trips, a certain delay time t1 is waited, the time t1 is usually more than 2 seconds, for example, reclosing can be successful again after 10 seconds, and therefore the reliability of power supply of the power system is improved.
Further, in order to improve the safety of the automatic closing module for automatically driving the breaker to close, and avoid the existence of permanent or artificial faults, the automatic closing module for automatically driving the breaker to close is quickly detected that the breaker is in the opening state, and the operation is repeated for a certain number of times m, wherein m is greater than 1, for example, 4 times or 6 times, so that the automatic closing module enters the self-locking state, no automatic closing is performed, and manual closing is performed after hidden danger is manually removed. In a certain fault monitoring time t2, for example, within 60s, the control unit enters a self-locking state when the opening state monitoring mechanism 240 detects that the circuit breaker is switched from the closing state to the opening state m times, and the circuit breaker unit 100 is not automatically closed any more, wherein m is greater than 1. When the automatic closing module enters the self-locking state, the control unit monitors that the circuit breaker is switched from the opening state to the closing state through the opening state monitoring mechanism 240, and after the closing state lasts for at least a certain self-locking recovery time t3, for example, for 60s, the automatic closing module releases the self-locking state, and the automatic closing of the circuit breaker unit 100 is recovered. The m times, the delay time t1, the fault monitoring time t2 and the self-locking recovery time t3 are preset and can be adjusted according to needs, and the fault monitoring time t2 and the self-locking recovery time t3 can be the same or different.
In a specific embodiment, after the control unit detects that the circuit breaker is switched from the closing state to the opening state through the opening state monitoring mechanism 240 each time, the control unit stores a record of opening time each time.
The control unit acquires the state of the mode switching mechanism, and if the mode switching mechanism is in a manual mode, closing operation is not automatically executed; if the circuit breaker is in the automatic mode, reading the latest m switching-off time records, comparing the time difference between the latest first switching-off time and the latest mth switching-off time with the fault monitoring time t2, and if the switching-off time difference is more than or equal to the fault monitoring time t2, after the control unit waits for the delay time t1, the automatic control driving mechanism pushes the auxiliary handle 210 to drive the operating handle 110 to switch on the circuit breaker unit 100; and if the switching-off time difference is less than the fault monitoring time t2, entering a self-locking state.
If the opening time records are less than m, the control unit automatically controls the driving mechanism to close the circuit breaker unit 100.
When the control unit monitors that the breaker is switched from the opening state to the closing state through the opening state monitoring mechanism 240, whether the automatic closing module belongs to the self-locking state or not is judged, if the automatic closing module is in the self-locking state, the duration time starts to be monitored, and the breaker is not switched from the closing state to the opening state within the self-locking recovery time t3, the automatic closing module releases the self-locking state.
The working process of the automatic closing module of the circuit breaker comprises the following steps:
1. manual mode (automatic switching module is switched to manual state): after the fault such as leakage, overload, short circuit, etc. is opened, the circuit breaker unit 100 cannot be automatically closed.
2. Automatic mode (automatic closing module is switched to automatic state, and closing is continuously carried out for 4 times):
(0) for the first network access, the driving mechanism drives the circuit breaker unit 100 to switch on;
1, the opening state monitoring mechanism 240 detects the first opening of the circuit breaker unit 100 due to the opening of the faults such as electric leakage, overload, short circuit and the like;
(2) the first automatic reclosing of the circuit breaker unit 100 is performed after 10 seconds of delay; if the fault state is not eliminated, the opening state monitoring mechanism 240 detects that the circuit breaker unit 100 is opened for the second time under the action of the fault signal;
(3) the circuit breaker unit 100 automatically recloses for the second time after 10 seconds of delay; if the fault state is not eliminated, the opening state monitoring mechanism 240 detects the third opening of the circuit breaker unit 100 under the action of the fault signal;
(4) the breaker unit 100 automatically recloses for the third time after delaying for 10 seconds; if the fault state is not eliminated, the opening state monitoring mechanism 240 detects the fourth opening of the circuit breaker unit 100 under the action of the fault signal;
(5) after the fourth brake opening, the automatic closing module enters a locking state, automatic reclosing cannot be performed, and the locking state needs to be unlocked in a manual closing mode; or three times of fault switching-off occurs within 10min, and the automatic switching-on module also enters a locking state.
3. Power failure occurs:
1, power failure occurs in a closing state, and closing is still kept after power is supplied;
(2) power failure in the brake-off state:
a. the incoming call is received within 2 minutes, and the original state (normal brake opening and locking brake opening) is kept;
if the call can be received within 2 minutes, which is usually caused by faults of other parts in the circuit, and the faults of other parts are eliminated, the automatic closing module restores the original working state;
b. and when the incoming call is received for more than 2 minutes, closing the switch after the incoming call.
If the power can not be supplied within 2 minutes, the power supply device is usually a power supply facility, the automatic closing module performs closing action after the circuit is normally supplied with power, and misoperation caused by faults of other parts in the circuit can be avoided.
The power supply of the driving part of the circuit breaker is a collected main line signal, the main line is powered off, namely a product is judged to be powered off, the time of a breakpoint can be calculated through the time stored before the power is turned off and the time difference after the power is supplied, or the power can be supplied to the control unit through a battery in the power-off process, and the power-off time is counted.
Namely, power failure occurs in the open state, the power is automatically switched on after power is supplied when the power failure time is larger than a power failure time threshold t4, the open state is maintained when the power failure time is smaller than or equal to a power failure time threshold t4, and t4 can be set to be 2 minutes or other time.
Further, the auxiliary handle 210 includes a pivot portion 211, and a driving portion 212 and a linkage portion 213 respectively disposed at two ends of the pivot portion 211, the linkage portion 213 is connected to the operating handle 110 of the circuit breaker unit 100 through the linkage 211, a top end of the driving portion 212 is connected to the pivot portion 211, a bottom end of the driving portion 212 is engaged with the opening state monitoring mechanism 240, and a side surface of the driving portion 212 is engaged with the driving mechanism.
Further, the side of the driving part 212 is provided with a driving groove 214 in an arc structure, the driving mechanism extends to the inner side of the driving groove 214 to be matched, the end face of the bottom end of the driving part 212 is provided with a trigger boss 215 in the arc structure, the trigger boss 215 in the arc structure is matched with the opening state monitoring mechanism 240 to be smoother, and the problems of clamping stagnation and the like cannot occur.
As shown in fig. 16 to 17, as an embodiment of the opening state monitoring means 240, the opening state monitoring means 240 is a micro switch mounted on the control board 220, the micro switch is electrically connected to the control unit, a side surface of the micro switch is connected to the control board 220, and a top end of the micro switch is provided with a lever 242 extending to a rotation path of the driving part 212. The opening state monitoring mechanism 240 of the present embodiment has the characteristics of simple structure, convenient assembly and low cost.
As shown in fig. 18, as another embodiment of the opening state monitoring mechanism 240, the opening state monitoring mechanism 240 includes a circuit board 241 vertically connected to the control board 220, and a micro switch installed on a side surface of the circuit board 241, the circuit board 241 is inserted into the control board 220, the micro switch is electrically connected to the control unit of the control board 220 through the circuit board 241, the circuit board 241 is disposed opposite to an end surface of the bottom end of the driving part 212, the micro switch is disposed between the circuit board 241 and the end surface of the bottom end of the driving part 212, a side surface of one side of the micro switch is connected to the control board 220, and a side surface of the other side opposite to the micro switch is engaged with the end surface of the bottom end of the driving part 212. The opening state monitoring mechanism 240 of the present embodiment has a feature of reliable fitting.
Further, the driving mechanism includes a motor 221 connected to the control unit of the control board 220, a screw 222 connected to the motor 221, a first gear 223 engaged with the screw 222, a second gear 224 engaged with the first gear 223, a third gear 225 engaged with the second gear 224, and a link 226 hinged to an eccentric position of the third gear 225, when the circuit breaker unit 100 needs to be driven to be switched on, the motor 221 drives the screw 222 to rotate, and sequentially drives the first gear 223, the second gear 224, and the third gear 225 to rotate, and the link 226 is driven by the third gear 225 to push the auxiliary handle 210 to drive the operating handle 110 to switch on the circuit breaker unit 100.
Further, an initial position detection mechanism 227 and a switching-on position detection mechanism 228 which are respectively matched with the third gear 225 are arranged on the periphery of the third gear 225, the initial position detection mechanism 227 and the switching-on position detection mechanism 228 are respectively connected with a control unit of the control board 220, a driving boss 2280 which is respectively matched with the initial position detection mechanism 227 and the switching-on position detection mechanism 228 is arranged on the side surface of the third gear 225, the initial position detection mechanism 227 and the switching-on position detection mechanism 228 respectively extend to a rotation path of the driving boss 2280 to be matched, and the initial position detection mechanism 227 and the switching-on position detection mechanism 228 can respectively detect an initial operation position and a switching-on operation position of the third gear 225 and feed back the initial operation position and the switching-on operation position to the control unit.
When the circuit breaker unit 100 is opened, the motor 221 starts to start, the third gear 225 rotates from the position of the initial position detection mechanism 227 (at this time, the initial position detection mechanism 227 is in a closed state) to the direction of the closed position detection mechanism 228, the third gear 225 drives the connecting rod 226 to push the auxiliary handle 210 to drive the operating handle 110 to close the circuit breaker unit 100, when the closed position detection mechanism 228 is detected and the open state monitoring mechanism 240 is detected to be in an open state, the product is successfully closed, the motor rotates to the initial position S2, the S2 micro switch is turned on, and the motor stops rotating. When the third gear 225 rotates to the closing operation position, the closing position detecting mechanism 228 is triggered, which indicates that the closing operation has been completed, but whether the circuit breaker unit 100 has completed closing is determined by whether the opening state monitoring mechanism 240 is triggered.
Further, the initial position detecting mechanism 227 and the closing position detecting mechanism 228 are micro switches.
Further, a tripping member connected to the circuit breaker unit 100 and a tripping detection mechanism 229 matched with the tripping member are further disposed in the auxiliary module 200, and a tripping boss 2290 matched with the tripping member is disposed on the third gear 225. When the remote operation of the circuit breaker unit 100 is required to trip, the third gear 225 is driven to rotate in the reverse direction to push the trip member, so that the trip member drives the circuit breaker unit 100 to trip, and when the trip member drives the circuit breaker unit 100 to trip, the trip detection mechanism 229 is triggered and fed back to the control unit to indicate that the trip operation is completed and the motor 221 is turned off.
Further, the initial position detection mechanism 227, the closing position detection mechanism 228, and the releasing detection mechanism 229 are microswitches, respectively, the closing position detection mechanism 228 and the opening state monitoring mechanism 240 are disposed at two sides of the initial position detection mechanism 227, and the releasing detection mechanism 229 is disposed above the initial position detection mechanism 227.
Further, the initial position detecting mechanism 227, the closing position detecting mechanism 228, and the releasing detecting mechanism 229 are disposed on one side surface of the control board 220, and the opening state monitoring mechanism 240 is disposed on the other side surface of the control board 220.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. The utility model provides an automatic closing module of circuit breaker which characterized in that: comprises an auxiliary shell, an auxiliary handle (210), a control panel (220) and a driving mechanism which are respectively arranged in the auxiliary shell, wherein the auxiliary handle (210) is used for being linked with an operating handle (110) of a circuit breaker unit (100), an opening state monitoring mechanism (240) matched with the auxiliary handle (210) is arranged in the auxiliary shell, the control panel (220) is provided with a control unit, the opening state monitoring mechanism (240) and the driving mechanism are respectively connected with the control unit of the control panel (220), the circuit breaker unit (100) drives the auxiliary handle (210) to trigger the opening state monitoring mechanism (240) through the operating handle (110) when tripping, after receiving a circuit breaker opening signal transmitted by the opening state monitoring mechanism (240), the control driving mechanism pushes the auxiliary handle (210) to drive the operating handle (110) to enable the circuit breaker unit (100) to be switched on.
2. The auto-close module of a circuit breaker according to claim 1, wherein: the automatic closing module is also provided with a mode switching mechanism, the mode switching mechanism is connected with the control unit of the control panel (220) and is used for setting the automatic closing module to be in a manual mode or an automatic mode, and if the mode switching mechanism is set to be in the manual mode, the control unit does not automatically control the driving mechanism to close the circuit breaker unit (100); if the mode switching mechanism is set to be in the automatic mode, the switching-off state monitoring mechanism (240) detects that the circuit breaker is in the switching-off state, and after a certain delay time t1 is delayed, the control unit automatically controls the driving mechanism to push the auxiliary handle (210) to drive the operating handle (110) to switch on the circuit breaker unit (100).
3. The auto-close module of a circuit breaker according to claim 2, wherein: the mode switching mechanism of the automatic closing module is in an automatic mode and is also provided with a self-locking state, the control unit enters the self-locking state when detecting that the breaker is switched from the closing state to the opening state m times through the opening state monitoring mechanism (240) within a certain fault monitoring time t2, the breaker unit (100) is not automatically closed any more, and m is larger than 1.
4. The auto-close module of a circuit breaker according to claim 3, wherein: when the automatic closing module enters a self-locking state, the control unit monitors that the breaker is switched from the opening state to the closing state through an opening state monitoring mechanism (240), and the automatic closing module releases the self-locking state after the closing state lasts for at least a certain self-locking recovery time t 3.
5. The auto-close module of a circuit breaker according to claim 3, wherein: the control unit stores each opening time record after detecting that the breaker is switched from a closing state to an opening state through the opening state monitoring mechanism (240) each time;
the control unit acquires the state of the mode switching mechanism, and if the mode switching mechanism is in a manual mode, closing operation is not automatically executed;
if the automatic mode is adopted, the latest m-number of opening time records are read, the time difference between the latest first opening time and the latest m-number of opening time is compared with the fault monitoring time t2, if the opening time difference is larger than or equal to the fault monitoring time t2, the control unit waits for the delay time t1, the automatic control driving mechanism pushes the auxiliary handle (210) to drive the operating handle (110) to close the circuit breaker unit (100), and if the opening time difference is smaller than the fault monitoring time t2, the automatic control driving mechanism enters a self-locking state and does not automatically close the circuit breaker unit (100).
6. The auto-close module of a circuit breaker according to claim 1, wherein: the auxiliary handle (210) comprises a pivoting part (211), and a driving part (212) and a linkage part (213) which are respectively arranged at two ends of the pivoting part (211), wherein the linkage part (213) is connected with the operating handle (110) of the circuit breaker unit (100) through the linkage part (211), the top end of the driving part (212) is connected with the pivoting part (211), the bottom end of the driving part (212) is matched with the opening state monitoring mechanism (240), and the side surface of the driving part (212) is matched with the driving mechanism.
7. The auto-close module of a circuit breaker according to claim 6, wherein: the opening state monitoring mechanism (240) is a microswitch arranged on the control panel (220), and the top end of the microswitch is provided with a poking rod (242) extending to the rotating path of the driving part (212); or, the opening state monitoring mechanism (240) comprises a circuit board (241) vertically connected with the control board (220) and a microswitch installed on the side face of the circuit board (241), the circuit board (241) is arranged opposite to the end face of the bottom end of the driving part (212), and the microswitch is arranged between the circuit board (241) and the end face of the bottom end of the driving part (212).
8. The auto-close module of a circuit breaker according to claim 1, wherein: the driving mechanism comprises a motor (221) connected with a control unit of the control panel (220), a screw (222) connected with the motor (221), a first gear (223) meshed with the screw (222), a second gear (224) meshed with the first gear (223), a third gear (225) meshed with the second gear (224) and a connecting rod (226) hinged to the eccentric position of the third gear (225), and the auxiliary handle (210) is pushed through the connecting rod (226) to drive the operating handle (110) to enable the circuit breaker unit (100) to be switched on.
9. The auto-close module of a circuit breaker according to claim 8, wherein: the periphery of the third gear (225) is provided with an initial position detection mechanism (227) and a switching-on position detection mechanism (228) which are respectively matched with the third gear (225), the initial position detection mechanism (227) and the switching-on position detection mechanism (228) are respectively connected with a control unit of the control panel (220), the side face of the third gear (225) is provided with a driving boss (2280) which is respectively matched with the initial position detection mechanism (227) and the switching-on position detection mechanism (228), and the initial position detection mechanism (227) and the switching-on position detection mechanism (228) respectively extend to the rotating path of the driving boss (2280) to be matched with each other.
10. The auto-close module of a circuit breaker according to claim 9, wherein: a tripping piece connected with the circuit breaker unit (100) and a tripping detection mechanism (229) matched with the tripping piece are further arranged in the auxiliary module (200), a tripping boss (2290) matched with the tripping piece is arranged on the third gear (225), the third gear (225) is driven to rotate reversely to push the tripping piece, and the tripping piece drives the circuit breaker unit (100) to trip; the initial position detection mechanism (227), the switching-on position detection mechanism (228) and the tripping detection mechanism (229) are microswitches respectively, the switching-on position detection mechanism (228) and the switching-off state monitoring mechanism (240) are arranged on two sides of the initial position detection mechanism (227) relatively, and the tripping detection mechanism (229) is arranged above the initial position detection mechanism (227); the initial position detection mechanism (227), the switching-on position detection mechanism (228) and the tripping detection mechanism (229) are arranged on the side surface of one side of the control panel (220), and the switching-off state monitoring mechanism (240) is arranged on the side surface of the other side of the control panel (220).
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| CN202010306968.2A CN113539758A (en) | 2020-04-17 | 2020-04-17 | Automatic closing module of circuit breaker |
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| CN202010306968.2A CN113539758A (en) | 2020-04-17 | 2020-04-17 | Automatic closing module of circuit breaker |
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| CN114597105A (en) * | 2022-03-17 | 2022-06-07 | 德力西电气有限公司 | Circuit breaker and control method thereof |
| CN117198830A (en) * | 2023-09-22 | 2023-12-08 | 杭州天卓网络有限公司 | Internet of things circuit breaker applied to intelligent power and control method thereof |
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| CN105428172A (en) * | 2015-12-31 | 2016-03-23 | 常熟开关制造有限公司(原常熟开关厂） | Switching device |
| CN106067409A (en) * | 2016-08-02 | 2016-11-02 | 许昌许继低压电器有限公司 | The external chopper of electric energy meter |
| CN205881835U (en) * | 2016-08-02 | 2017-01-11 | 许昌许继低压电器有限公司 | External circuit breaker of electric energy meter |
| CN207303009U (en) * | 2017-07-31 | 2018-05-01 | 浙江正泰电器股份有限公司 | The driving device of automatic closing breaker |
| CN207338272U (en) * | 2017-11-03 | 2018-05-08 | 环宇集团浙江高科股份有限公司 | A kind of breaker auto recloser |
| CN107749382A (en) * | 2017-11-16 | 2018-03-02 | 浙江人民电器有限公司 | Operation structure, breaker and the control method of a kind of breaker |
| CN109286171A (en) * | 2018-11-14 | 2019-01-29 | 南京国电南自轨道交通工程有限公司 | Breaker tripping and closing method is repeated for the locking breaker of DC traction feeder protection equipment |
| CN110473746A (en) * | 2019-07-03 | 2019-11-19 | 哥伦电气有限公司 | A kind of autoreclose breaker and handle method for preventing misoperation |
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| CN114597105A (en) * | 2022-03-17 | 2022-06-07 | 德力西电气有限公司 | Circuit breaker and control method thereof |
| CN114597105B (en) * | 2022-03-17 | 2024-06-11 | 德力西电气有限公司 | Circuit breaker and control method thereof |
| CN117198830A (en) * | 2023-09-22 | 2023-12-08 | 杭州天卓网络有限公司 | Internet of things circuit breaker applied to intelligent power and control method thereof |
| CN117198830B (en) * | 2023-09-22 | 2024-04-05 | 杭州天卓网络有限公司 | Internet of things circuit breaker applied to intelligent power and control method thereof |
| CN117976484A (en) * | 2024-03-28 | 2024-05-03 | 浙江莱源电气科技有限公司 | Automatic reclosing leakage protector |
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