CN113539758B - Automatic closing module for circuit breakers - Google Patents
Automatic closing module for circuit breakers Download PDFInfo
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- CN113539758B CN113539758B CN202010306968.2A CN202010306968A CN113539758B CN 113539758 B CN113539758 B CN 113539758B CN 202010306968 A CN202010306968 A CN 202010306968A CN 113539758 B CN113539758 B CN 113539758B
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- circuit breaker
- switching
- state
- wiring
- automatic
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- 230000007246 mechanism Effects 0.000 claims abstract description 273
- 238000012544 monitoring process Methods 0.000 claims abstract description 78
- 238000001514 detection method Methods 0.000 claims description 32
- 230000005540 biological transmission Effects 0.000 claims description 24
- 238000011084 recovery Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000009471 action Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 210000004258 portal system Anatomy 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 208000025274 Lightning injury Diseases 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
Landscapes
- Breakers (AREA)
Abstract
一种断路器的自动合闸模块，其包括辅助壳体以及分别安装在辅助壳体内的辅助手柄、控制板和驱动机构，辅助手柄用于与断路器单元的操作手柄联动连接，在辅助壳体内设有与辅助手柄配合的分闸状态监测机构，所述的控制板上设有控制单元，分闸状态监测机构和驱动机构分别与控制板的控制单元连接，断路器单元跳闸时通过操作手柄带动辅助手柄触发分闸状态监测机构，控制单元在收到分闸状态监测机构传送的断路器分闸信号后，控制驱动机构推动辅助手柄带动操作手柄使断路器单元合闸，在线路的暂时性故障解除后自动合闸断路器单元，及时恢复电力系统供电，保证电力系统供电的可靠性。
An automatic closing module for a circuit breaker comprises an auxiliary housing and an auxiliary handle, a control panel and a driving mechanism respectively installed in the auxiliary housing, wherein the auxiliary handle is used for linkage connection with an operating handle of a circuit breaker unit, an opening state monitoring mechanism cooperating with the auxiliary handle is arranged in the auxiliary housing, a control unit is arranged on the control panel, the opening state monitoring mechanism and the driving mechanism are respectively connected with the control unit of the control panel, when the circuit breaker unit trips, the auxiliary handle is driven by the operating handle to trigger the opening state monitoring mechanism, after receiving the circuit breaker opening signal transmitted by the opening state monitoring mechanism, the control unit controls the driving mechanism to push the auxiliary handle to drive the operating handle to close the circuit breaker unit, and automatically closes the circuit breaker unit after the temporary fault of the line is relieved, so as to timely restore the power supply of the power system and ensure the reliability of the power supply of the power system.
Description
Technical Field
The invention relates to the field of piezoelectric devices, in particular to an automatic closing module of a circuit breaker.
Background
The circuit breaker is an important component of the electrical 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 fault. According to the intelligent requirements of the power grid in China, a circuit breaker is required to have a remote control function in some working occasions, so that a small circuit breaker or an electric leakage circuit breaker (RCBO, RCCB) with an automatic switching-on function is generated, an electric operation module and a circuit breaker unit are combined for use, and the circuit breaker can be driven to switch on again through the electric operation module after the line fault is removed.
Although the existing auxiliary module can remotely switch on the circuit breaker, the circuit breaker needs to be switched on through manual operation after the circuit fault is released, the circuit faults such as lightning stroke and wind damage cannot be switched on automatically, the insulation performance (insulator and air gap) of the circuit after the circuit breaker trips can be recovered rapidly in most cases, and if the circuit breaker cannot be switched on automatically after the circuit recovery, the circuit breaker needs to be switched on remotely under manual operation, so that the reliability of power supply of a power system can be influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an automatic closing module of a circuit breaker, which has a simple structure and high reliability.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The utility model provides an automatic closing module of circuit breaker, its includes auxiliary housing and installs auxiliary handle, control panel and actuating mechanism in auxiliary housing respectively, auxiliary handle be used for being connected with the operating handle linkage of circuit breaker unit, be equipped with in auxiliary housing with auxiliary handle complex brake separating state monitoring mechanism, the control panel on be equipped with control unit, brake separating state monitoring mechanism and actuating mechanism are connected with the control unit of control panel respectively, drive auxiliary handle through operating handle when the circuit breaker unit trips and trigger brake separating state monitoring mechanism, after receiving the circuit breaker brake separating signal that brake separating state monitoring mechanism transmitted, control actuating mechanism promotes auxiliary handle and drives operating handle and make the circuit breaker unit switch-on.
Preferably, the automatic switching-on module is further provided with a mode switching mechanism, the mode switching mechanism is connected with the control unit of the control board and is used for setting the automatic switching-on module to be in a manual mode or an automatic mode, if the mode switching mechanism is set to be in the manual mode, the control unit does not automatically control the driving mechanism to enable the circuit breaker unit to be switched on, 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 a 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 operation handle to enable the circuit breaker unit to be switched on.
Preferably, the mode switching mechanism of the automatic switching-on 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 circuit breaker is switched from the switching-on state to the switching-off state for m times through the switching-off state monitoring mechanism within a certain fault monitoring time t2, the circuit breaker unit is not switched on any more automatically, and m is larger than 1.
Preferably, after 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 switching-off time record of each time after detecting that the circuit breaker is switched from the switching-on state to the switching-off state through the switching-off state monitoring mechanism each time;
the control unit acquires the state of the mode conversion mechanism, and if the mode is a manual mode, the switching-on operation is not automatically executed;
If the automatic mode is adopted, the opening time record of the last m pieces is read, the time difference between the last first opening time and the last m pieces of opening time is compared with the fault monitoring time t2, if the opening time difference is more than or equal to the fault monitoring time t2, the control unit waits for the delay time t1, and then the automatic control driving mechanism pushes the auxiliary handle to drive the operation handle to enable the breaker unit to be switched on, if the opening time difference is less than the fault monitoring time t2, the self-locking state is achieved, and the breaker unit is not automatically switched on any more.
Preferably, the auxiliary handle comprises a pivoting part, a driving part and a linkage part, wherein the driving part and the linkage part are respectively arranged at two ends of the pivoting 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 pivoting part, the bottom end of the driving part is matched with the brake-separating state monitoring mechanism, and the side surface of the driving part is matched with the driving mechanism.
Preferably, the brake-separating state monitoring mechanism is a micro switch arranged on the control board, a deflector rod extending to the rotating path of the driving part is arranged at the top end of the micro switch, or the brake-separating state monitoring mechanism comprises a circuit board vertically connected with the control board and a micro switch arranged on the side surface of the circuit board, the circuit board is opposite to the end surface of the bottom end of the driving part, and the micro switch is arranged between the circuit board and the end surface of the bottom end of the driving part.
Preferably, the driving mechanism comprises a motor connected with the control unit of the control board, a screw rod connected with the motor, a first gear meshed with the screw rod, a second gear meshed with the first gear, a third gear meshed with the second gear and a connecting rod hinged with the eccentric position of the third gear, and the connecting rod pushes the auxiliary handle to drive the operation handle to enable the breaker unit to be switched on.
Preferably, an initial position detection mechanism and a closing position detection mechanism which are respectively matched with the third gear are arranged around the third gear, the initial position detection mechanism and the closing position detection mechanism are respectively connected with a control unit of the control board, a driving boss which is respectively matched with the initial position detection mechanism and the closing position detection mechanism is arranged on the side face of the third gear, and the initial position detection mechanism and the closing position detection mechanism are respectively matched with the driving boss in a rotating path.
Preferably, the auxiliary module is further 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 to drive the third gear to reversely rotate so as to push the tripping piece, so that the tripping piece drives the circuit breaker unit to trip.
Preferably, the initial position detecting mechanism, the closing position detecting mechanism and the tripping detecting mechanism are microswitches respectively, the closing position detecting mechanism and the tripping state monitoring mechanism are oppositely arranged on two sides of the initial position detecting mechanism, the tripping detecting mechanism is arranged above the initial position detecting mechanism, the closing position detecting mechanism and the tripping detecting mechanism are arranged on the side face of one side of the control board, and the tripping state monitoring mechanism is arranged on the side face of the other side of the control board.
According to the automatic switching-on module of the circuit breaker, the switching-off state monitoring mechanism is arranged in the automatic switching-on module and corresponds to the switching-off position or the switching-on position of the auxiliary handle, the switching-off state monitoring mechanism is used for detecting whether the circuit breaker unit is in a switching-off state, and when the circuit breaker unit is detected to be in the switching-off state, the driving mechanism is controlled to enable the circuit breaker unit to automatically switch on again after a small delay, so that the circuit breaker unit is automatically switched on after a temporary fault of a circuit is released, power supply of a power system is timely recovered, and the reliability of the power supply of the power system is guaranteed.
Drawings
Fig. 1 is a schematic structural view of a circuit breaker according to an embodiment of the present invention;
FIG. 2 is an exploded view of the power take-off mechanism of an embodiment of the present invention;
FIG. 3 is a first embodiment of the power take-off mechanism of the present invention;
FIG. 4 is a second embodiment of the power take-off mechanism of the present invention;
FIG. 5 is a schematic diagram of the cooperation of the power take-off mechanism and the wiring mechanism according to the embodiment of the invention;
FIG. 6 is another schematic diagram of the cooperation of the power take-off mechanism and the wiring mechanism according to the embodiment of the present invention;
FIG. 7 is a schematic view of the structure of the housing according to the embodiment of the present invention;
FIG. 8 is a schematic diagram showing the cooperation of the housing and the second housing according to the embodiment of the present invention;
FIG. 9 is a schematic view of the assembled locking mechanism according to the embodiment of the present invention;
FIG. 10 is an assembled schematic view of a locking mechanism according to an embodiment of the present invention;
FIG. 11 is a schematic view of the structure of a second housing according to an embodiment of the present invention;
FIG. 12 is a schematic view of a locking mechanism according to an embodiment of the present invention;
FIG. 13 is a schematic view showing the engagement of the locking mechanism with the first housing and the second housing according to the embodiment of the present invention;
FIG. 14 is a schematic view showing the engagement of the locking mechanism with the second housing according to the embodiment of the present invention;
FIG. 15 is a schematic diagram of an electrical operation module according to an embodiment of the present invention;
FIG. 16 is a diagram illustrating an operation of an auxiliary handle of the automatic closing module according to an embodiment of the present invention;
Fig. 17 is a schematic structural diagram of the automatic closing module after hiding the control board according to the embodiment of the present invention;
fig. 18 is a schematic structural view of a control board according to an embodiment of the present invention.
Detailed Description
Embodiments of the recloser module of the circuit breaker of the present invention are further described below with reference to the examples shown in fig. 1-18. The automatic closing 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 connection mechanism 700 disposed in the first housing 300, the connection mechanism 700 includes a connection socket 720 and a connection screw 710 screw-coupled with the connection socket 720, the auxiliary module 200 includes a second housing 400 and a control board 220 and an actuating mechanism 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 ends of the first housing 300 and the second housing 400, and the control board 220 of the auxiliary module 200 takes power from the connection mechanism 700 of the circuit breaker unit 100 through the power taking mechanism 500.
As shown in fig. 5-6, the power taking mechanism 500 includes a power taking piece 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 piece 510 and the power transmission mechanism, wherein the power taking piece 510 is in a U-shaped structure, and after the power taking piece 510 in the U-shaped structure is sleeved on two sides of the screw 711 of the wiring screw 710, a nut 712 of the wiring screw 710 is screwed to compress the power taking piece 510 on the wiring seat 720.
According to the power taking structure of the circuit breaker, the power taking sheet 510 with the U-shaped structure is sleeved on the two sides of the screw 711 of the wiring screw 710, so that the power taking sheet 510 can be prevented from being driven to twist when the wiring screw 710 is screwed, reliable connection between the power taking sheet 510 and the wiring mechanism 700 is ensured, the contact area between the power taking sheet 510 with the U-shaped structure and the wiring mechanism 700 is larger, and the contact resistance is smaller.
Further, the electric power taking mechanism 500 is further provided with a housing 550 for shielding the electric power taking mechanism 500, one end of the housing 550 is provided with a first mounting buckle 551 connected with the first housing 300, the other end of the housing 550 is provided with a second mounting buckle 552 connected with the second housing 400, the second housing 400 is provided with a power transmission hole 560 corresponding to the power transmission mechanism, 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 mounting buckle 552.
As shown in fig. 12 to 14, the connection structure of the circuit breaker of the present invention is used to connect between the first housing 300 of the circuit breaker unit 100 and the second housing 400 of the auxiliary module 200, the connection structure includes a locking mechanism 600 (fig. 10), the locking mechanism 600 includes a buckle plate 620 engaged with the first housing 300, a first locking buckle 610 engaged with the second housing 400, and a connection plate 630 connected between the first locking buckle 610 and the buckle plate 620, first locking holes 410 and insertion holes 310 are respectively provided on the second housing 400 and the first housing 300, the first locking buckle 610 of the locking mechanism 600 can be inserted into the first locking holes 410 to be fixed with the second housing 400, and the buckle plate 620 can be inserted into the insertion holes 310 to press the first housing 300 onto the second housing 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 to be fixed with the second shell 400, the buckle 620 is inserted into the jack 310 to press the first shell 300 on the second shell 400, direct connection of the first shell 300 or the second shell 400 through excessive buckle structures can be avoided, connection is reliable, assembly and disassembly are convenient, universality is high, and the connecting structure can be suitable for circuit breaker shells of different sizes.
Fig. 1 to 8 show a preferred embodiment of the power take-off structure of the circuit breaker of the present invention, the circuit breaker unit 100 of the present embodiment is a leakage protection circuit breaker, and the 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 of the present invention includes 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, the power taking mechanism 500 including a power taking sheet 510 electrically connected to the wiring mechanism 700 of the circuit breaker unit 100, a power transmitting mechanism electrically connected to the control board 220 of the auxiliary module 200, and a connecting mechanism connected between the power taking sheet 510 and the power transmitting mechanism.
As shown in fig. 5-6, the two wiring mechanisms 700 have substantially the same structure, the wiring mechanism 700 includes a wiring seat 720 and a wiring screw 710, the wiring seat 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 sheet 510, the wiring screw 710 passes through the wiring board 722 located outside the wiring frame 721 and is in threaded connection with the wiring frame 721, and the wiring board 722 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 compress the wire and the power taking sheet 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 that are disposed opposite to each other, and a side wiring portion 7223 that is connected between one ends of the upper wiring portion 7221 and the lower wiring portion 7222, the lower wiring portion 7222 is inserted into the inside of the wiring frame 721 and disposed opposite to a 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 conductive wire against the bottom side of the lower wiring portion 7222, the upper wiring portion 7221 is disposed 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, and the nut 712 of the wiring screw 710 is disposed on a side of the upper wiring portion 7221 away from the wiring frame 721, and when the wiring screw 710 moves close to the wiring frame 721, the nut 712 is driven to press the power taking piece 510 against the top side of the upper wiring portion 7221. The nut 712 can be in close contact with the power take-off blade 510 after tightening regardless of the thickness of the lead 531 or without the lead 531.
As shown in fig. 2-3, in the first embodiment of the power taking mechanism 500, the connection mechanism of the present embodiment is a circuit board 530 connected to the power taking sheet 510, the power transmission mechanism is a pin (not shown in the drawing) disposed on the circuit board 530 or a wire (not shown in the drawing) welded to the circuit board 530, a connection hole 531 for mounting the pin or welding the wire 531 is disposed on the circuit board 530, one end of the pin and the wire 531 passes through the connection hole 531 and then is 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, the connection between the wiring mechanism 700 and the circuit board of the auxiliary module 200 is preferably realized by inserting the power take-off mechanism 500 at one time.
Further, the power take-off sheet 510 includes two power take-off arms 511 arranged in parallel, and a connecting arm 512 connected between one ends of the two power take-off arms 511, wherein the connecting arm 512 is provided with two fixing arms 513 at the other side opposite to the two power take-off arms 511, the circuit board 530 is provided with two fixing holes 5130 corresponding to the fixing arms 513 respectively, and the two fixing arms 513 are welded with the circuit board 530 after passing through the fixing holes 5130 (fig. 8). The electricity taking sheet 510 is welded with the circuit board 530 through the two fixing arms 513 respectively, so that the electric power taking sheet 510 has the characteristics of convenience in connection and reliability in connection, and the problem of breakage of the electricity taking sheet 510 is prevented, and the occurrence of factory returning maintenance is reduced.
As shown in fig. 4-5, in the second embodiment of the power taking mechanism 500, the power transmission mechanism of the present embodiment is a plug connector 520, the connection mechanism is a wire 531 connected between the plug connector 520 and the power taking piece 510, a socket 540 matched with the plug connector 520 is provided on the control board 220 of the auxiliary module 200, and a power transmission hole 560 for avoiding the plug connector 520 is provided on the second housing 400 of the auxiliary module 200. Of course, the plug 520 may be directly connected to the connection mechanism 700 of the circuit breaker unit 100 through a wire, which falls within the scope of the present invention.
Fig. 7-8 show a preferred embodiment of a cover 550, wherein a top corner at one end of the cover 550 is provided with a first mounting buckle 551 connected with the first housing 300, the first housing 300 is provided with a first mounting buckle 555 (fig. 2) connected with a second mounting buckle 551, the other end of the cover 550 is provided with a second mounting buckle 552 connected with the second housing 400, the cover 550 is provided with a baffle 554 correspondingly between the second mounting buckle 552 and the power transmission mechanism, the second housing 400 is provided with a power transmission hole 560 corresponding to the power transmission mechanism, and the baffle 554 can be inserted into the second housing 400 through the power transmission hole 560. The second housing 400 is more reliably fixed to the housing 550 by the second mounting boss 553 provided in the power transmission hole 560, and the insertion of the shutter 554 into the power transmission hole 560 can also function as dust prevention and insulation.
Further, the first mounting buckle 551 is in a U-shaped structure, the first mounting buckle 551 includes two opposite 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 claw 820 in a reverse hook structure on the side surface far away from each other, one side of the power transmission hole 560 is used for avoiding the power transmission mechanism, two clamping bosses 830 are correspondingly provided on the other side of the power transmission hole 560 on the inner wall of the second housing 400, the two clamping bosses 830 are oppositely arranged on two sides of the power transmission hole 560, the two supporting members 810 of the first mounting buckle 551 can pass through between the two clamping bosses 830, and the claws 820 on the outer sides of the two supporting members 810 are respectively clamped on the end surfaces on the inner sides of the clamping bosses 830. The first installation buckle 551 of U font structure is more reliable after not only connecting, and both sides atress is even when installing and dismantling moreover, is difficult for appearing breaking, has long service life's characteristics.
Fig. 9 to 14 show a preferred embodiment of the connection structure of the circuit breaker of the present invention for connecting between the first housing 300 of the circuit breaker unit 100 and the second housing 400 of the 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 the first housing 300 and one end of the second housing 400, a second locking buckle 640 connected between the first housing 300 and the other end of the second housing 400, and a third locking buckle 650 connected between the first housing 300 and the bottom of the second housing 400;
The second casing 400 and the first casing 300 are provided with a first locking hole 410 and an insertion hole 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 casing 400, the first casing 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 connection lines of the insertion hole 310, the second locking hole 320 and the third locking hole 330 on the first housing 300 are triangular, and the connection lines of the first locking hole 410, the second locking buckle 640 and the third locking buckle 650 on the second housing 400 are also triangular, that is, the connection lines of the locking mechanism 600, the second locking buckle 640 and the third locking buckle 650 are triangular.
According to the connecting structure of the circuit breaker, through the locking mechanism 600, the second locking buckle 640 and the third locking buckle 650 which are distributed in a triangular structure, 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 is assembled, and the locking mechanism 600 can be disassembled firstly during disassembly, so that the connecting structure has the characteristic of low assembly and disassembly difficulty.
Further, the third locking buckle 650 connected between 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 near the third locking buckle 640, and the thickness of the third locking buckle 650 gradually decreases along the direction near the third locking buckle 640, and a buckle surface 651 disposed obliquely is formed at the top side of the third locking buckle 650. The obliquely arranged fastening surface 651 has an assembly guiding function, prevents the error of the direction before the assembly of the second housing 400, not only optimizes the assembly process, is convenient for installation, but also prevents the damage of the assembly of the first housing 300. Preferably, the middle part of the fastening surface 651 is bent to a chamfer structure towards the top, so that the third locking fastener 640 can be conveniently connected with the first housing 300, and the assembly difficulty 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 U-shaped linkage 211 is disposed at an end of the auxiliary handle 210 near the operating handle 110, the linkage 211 can be sleeved on the operating handle 110 to be in limit fit, a linkage shaft 213 is disposed at an end surface of the auxiliary handle 210 corresponding to an inner side of the linkage 211, a linkage groove 214 matched with the linkage shaft 213 is disposed on the operating handle 110, and the linkage shaft 213 can be inserted into the linkage groove 214 to be limited.
Preferably, the cross section of the linkage shaft 213 is in a cross structure, the circumferential direction of the linkage shaft 213 is respectively provided with a limit groove 215, and a limit rib in limit fit with the limit 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 have a U-shaped structure.
The first locking buckle 610 includes two opposite supporting members 810, one ends of the two supporting members 810 are respectively connected with the connecting plate 630, the other ends of the two supporting members 810 are respectively provided with claws 820 in a reverse hook structure on the sides far away from each other, the inner wall of the second shell 400 is correspondingly provided with clamping bosses 830 on 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, so that the claws 820 on the outer sides of the two supporting members 810 are respectively clamped on the end surfaces on the inner sides of the clamping bosses 830. The first locking buckle 610 with the U-shaped structure is more reliable after connection, and the two sides are stressed uniformly during installation and disassembly, so that the first locking buckle is not easy to break and has the characteristic of long service life.
The circuit breaker unit 100 includes a thermomagnetic protection electrode 120 and a drain protection electrode 130 which are stacked, wherein wiring mechanisms 500 are respectively arranged at two ends of the thermomagnetic protection electrode 120 and the drain protection electrode 130, the drain protection electrode 130 includes a zero sequence current transformer, and a drain protection main loop wire passing through the zero sequence current transformer, two ends of the drain protection main loop wire are respectively connected to a circuit through the wiring mechanisms 500, the thermomagnetic protection electrode 120 includes a moving contact and a fixed contact which are oppositely arranged in a first shell 300, an operating mechanism connected with the moving contact, a handle 110 connected with the operating mechanism, and a bimetallic strip and a magnetic flux converter which are matched with the operating mechanism, and the fixed contact and the moving contact are respectively connected to the circuit through wiring mechanisms 700 at two ends of the first shell 300;
The operating mechanism comprises a lock catch and a jump button which are in snap fit, when the lock catch and the jump button are in snap fit, the operating handle is rotated to drive the movable contact to contact with the fixed contact and conduct a circuit through the operating mechanism, so that switching on and switching off are realized, meanwhile, energy storage and balance maintenance are realized for the operating mechanism, the bimetallic strip, the magnetic flux converter and the zero sequence current transformer respectively drive the lock catch and the jump button to be tripped when overload, short circuit and electric leakage faults occur on the circuit, the operating mechanism releases energy and drives the fixed contact to be separated from the movable contact after losing balance, tripping is realized to protect the circuit, when the short circuit or the overload faults disappear, the operating handle 110 is required to drive the lock catch and the jump button to be tripped again to realize reclosing, otherwise, the operating handle 110 cannot drive the operating mechanism to be switched on, the operating mechanism cannot return to a balance state under the energy storage, and the operating mechanism can be effectively protected when the next circuit fails;
The auxiliary module 200 includes a control board 220, an actuating mechanism and an auxiliary handle 210 connected with the circuit breaker unit 100, the control board 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, so that the lock catch and the trip buckle are re-buckled, and manual closing on site can be avoided. It will be appreciated that the circuit breaker unit 100 may include a plurality of thermomagnetic protection poles 120 each having access to a different phase line, and that the circuit breaker unit 100 may have only any one protection function, or two protection functions, of overload, short-circuit and leakage protection. In addition, the reclosing and the rebuckling of the circuit breaker unit 100 are the same action process, and the rotation directions of the operating handle 110 are the same during the reclosing and the rebuckling, which is different in that the rotation angle of the operating handle 110 may be slightly larger during the reclosing and the rebuckling, so that the trip buckle can rotate above the lock catch, and the trip buckle can be lapped on the lock catch when the operating handle 110 is released, so that the electric operating module can play a role in closing in addition to the reclosing function, and the invention belongs to the protection scope of the invention.
As shown in fig. 15-16, in the automatic closing module of the circuit breaker of the present invention, the automatic closing module is assembled at one side of the circuit breaker unit 100, the automatic closing module includes an auxiliary housing, an auxiliary handle 210, a control board 220 and a driving mechanism, wherein the auxiliary handle 210 is used for being connected with the operation handle 110 of the circuit breaker unit 100 in a linkage manner, a brake-separating state monitoring mechanism 240 matched with the auxiliary handle 210 is arranged in the auxiliary housing, the brake-separating state monitoring mechanism 240 and the driving mechanism are respectively connected with the control board 220, the auxiliary handle 210 is driven by the operation handle 110 to trigger the brake-separating state monitoring mechanism 240 when the circuit breaker unit 100 trips, and the driving mechanism is controlled to push the auxiliary handle 210 to drive the operation handle 110 to close the circuit breaker unit 100 after receiving a brake-separating signal transmitted by the brake-separating state monitoring mechanism 240.
According to the automatic switching-on module of the circuit breaker, the switching-off state monitoring mechanism 240 is arranged in the automatic switching-on module, the switching-off state monitoring mechanism 240 corresponds to the switching-off position or the switching-on position of the auxiliary handle 210, whether the circuit breaker unit 100 is in a switching-off state or not is detected through the switching-off state monitoring mechanism 240, and when the circuit breaker unit 100 is detected to be in the switching-off state, the driving mechanism is controlled to enable the circuit breaker unit 100 to automatically switch on again after a small delay, so that the circuit breaker unit 100 is automatically switched on after a temporary fault of a circuit is released, power supply of a power system is recovered in time, and the reliability of the power supply of the power system is guaranteed.
The automatic switching-on module of this embodiment does not need to modify the existing breaker unit, and the switching-on/off state of the moving contact and the static contact of the breaker unit 100 can be obtained through the modification of the auxiliary template itself, the switching-on state monitoring mechanism 240 includes a micro switch connected with the control unit, the micro switch corresponds to the switching-on position or the switching-off position of the auxiliary handle 210, the auxiliary handle 210 is linked with the operating handle 110 of the breaker unit 100, synchronous switching-on and switching-off are realized, the auxiliary handle 210 rotates to the switching-on position along with the operating handle 110 when the breaker is switched on, and the auxiliary handle 210 rotates to the switching-on position along with the operating handle 110 when the breaker is switched on.
Taking the case 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, and when the auxiliary handle 210 rotates to the closing position, the micro switch is not triggered to indicate the closing state, and the state of the micro switch is fed back to the control unit of the control board 220 no matter whether the micro switch is triggered or not, so that the opening and closing state of the circuit breaker is determined, that is, the opening and closing state monitoring mechanism 240 can detect the opening and closing state of the circuit breaker. Obviously, the micro switch can be used for indicating the opening state without triggering, and the triggering can be used for indicating the closing state. The micro switch may also correspond to the closing 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, and is connected with the micro switch of the opening state monitoring mechanism 240 through the control circuit of hardware to detect the opening and closing state of the circuit breaker unit 100, 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 opening state monitoring mechanism 240, the microcontroller MCU is a microcontroller chip such as a single chip microcomputer or an ARM chip, and detects the opening and closing state of the circuit breaker unit 100 in a software and hardware combination manner, and when the circuit breaker unit 100 is in the opening state, the driving mechanism is driven to close 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, which may be a micro switch, a dial switch, an electronic switch, or a mechanical switch, etc., for example, the switch trigger indicates an automatic mode, and the non-trigger indicates a manual mode. If the mode switching mechanism is set to the manual mode, the automatic closing module does not automatically close, no matter whether the opening state monitoring mechanism 240 detects that the circuit breaker is in the opening state, the control unit does not automatically control the driving mechanism to push the auxiliary handle 210 to drive the operation handle 110 to close the circuit breaker unit 100, and 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 operation 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 where it is required to provide stable power supply. For example, in ETC charging portal systems, only if the ETC portal system provides stable power, the no-parking charging system service can be kept online. When the circuit breaker unit 100 is in the open state after fault tripping, in most cases, the line fault (such as lightning strike, wind damage, etc.) is temporary, the insulation performance (insulator and air gap) of the line after the circuit breaker is tripped can be recovered, and a certain delay time t1, is usually greater than 2 seconds, for example, the reclosing can be successful after 10 seconds, which improves the reliability of the power supply of the power system.
Further, in order to improve the safety of automatic circuit breaker switching-on of the automatic switching-on module, permanent faults or faults needing to be solved manually are avoided, the circuit breaker is detected to be in a switching-off state after the automatic circuit breaker switching-on is automatically driven by the automatic switching-on module, the automatic switching-on module is repeated for a certain number of times m, and m is greater than 1, for example, 4 times or 6 times, then the automatic switching-on module enters a self-locking state, automatic switching-on is not needed any more, and manual switching-on is needed after hidden danger is manually relieved. The control unit enters a self-locking state after detecting that the circuit 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, for example, within 60 seconds, and the circuit breaker unit 100 is not automatically closed any more, and 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 60 seconds, the automatic closing module releases the self-locking state and resumes the automatic closing of the circuit breaker unit 100. m times, delay time t1, fault monitoring time t2 and self-locking recovery time t3 are preset, and can be adjusted according to the needs, and fault monitoring time t2 and self-locking recovery time t3 can be the same or different.
In a specific embodiment, the control unit stores a record of the opening time of each time after detecting that the circuit breaker is switched from the closing state to the opening state by the opening state monitoring mechanism 240.
The control unit acquires the state of the mode switching mechanism, if the mode switching mechanism is in a manual mode, the switching operation is not automatically executed, if the mode switching mechanism is in an automatic mode, the switching time record of the last m switching times is read, the time difference between the last first switching time and the last m switching time is compared with the fault monitoring time t2, if the switching 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 210 to drive the operation handle 110 to enable the breaker unit 100 to be switched on, and if the switching time difference is smaller than the fault monitoring time t2, the self-locking state is entered.
If the opening time record is 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 circuit 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 is judged, if the automatic closing module is in the self-locking state, the monitoring duration is started, the circuit breaker is not switched from the closing state to the opening state within the self-locking recovery time t3, and 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 closing module is pulled to manual state) after the fault such as leakage, overload, short circuit etc. breaks the gate, the breaker unit 100 cannot automatically close.
2. Automatic mode (automatic closing module dials to automatic state, 4 times of continuous closing):
(0) For the first time of network access, the driving mechanism drives the breaker unit 100 to close;
1, the breaking state monitoring mechanism 240 detects that the breaker unit 100 breaks the gate for the first time due to the fault such as leakage, overload, short circuit and the like;
(2) If the fault state is not eliminated, the switching-off state monitoring mechanism 240 detects that the breaker unit 100 is switched off for the second time under the action of the fault signal;
(3) If the fault state is not eliminated, the switching-off state monitoring mechanism 240 detects that the breaker unit 100 is switched off for the third time under the action of the fault signal;
(4) If the fault state is not eliminated, the switching-off state monitoring mechanism 240 detects that the circuit breaker unit 100 is switched off for the fourth time under the action of the fault signal;
(5) After the fourth time of opening, the automatic closing module enters a locking state, and cannot be automatically reclosed, the locking state is unlocked in a manual closing mode, or three times of fault opening occur within 10 minutes, and the automatic closing module also enters the locking state.
3. A power failure occurs:
1, in a closing state, the power is cut off, and the closing is still kept after the power is supplied;
(2) The power is cut off in the opening state:
a. The call is made within 2 minutes, and the original state (normal brake opening and locking brake opening) is kept;
If the power can be turned on within 2 minutes, usually caused by faults of other parts in the circuit, after the faults of other parts are removed, the automatic closing module is restored to the original working state;
b. and the incoming call is more than 2 minutes, and switching on is carried out after the incoming call.
If the power cannot be supplied within 2 minutes, the problem of power supply facilities is solved, the automatic closing module performs closing action after the circuit is normally powered, 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 the collected main circuit signal, the main circuit is powered off, namely the product is judged to be powered off, the time of the break point can be calculated through the time stored before the power off and the time difference after the power on, 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.
That is, when the power failure occurs in the opening state, the automatic closing is performed after the power failure is performed when the power failure time threshold t4 is larger, and if the power failure time threshold t4 is smaller than or equal to the power failure time threshold t4, the opening state is maintained, and t4 can be set to 2 minutes or other time.
Further, the auxiliary handle 210 includes a pivoting portion 211, a driving portion 212 and a linkage portion 213 respectively disposed at two ends of the pivoting portion 211, the linkage portion 213 is connected to the operating handle 110 of the circuit breaker unit 100 via the linkage member 211, a top end of the driving portion 212 is connected to the pivoting portion 211, a bottom end of the driving portion 212 is matched with the opening state monitoring mechanism 240, and a side surface of the driving portion 212 is matched with the driving mechanism.
Further, a driving groove 214 with an arc structure is formed in the side face of the driving portion 212, the driving mechanism extends to the inner side of the driving groove 214 to be matched, a trigger boss 215 with an arc structure is arranged on the end face of the bottom end of the driving portion 212, and the trigger boss 215 with an arc structure is matched with the brake-separating state monitoring mechanism 240 more smoothly, so that the problems of clamping stagnation and the like cannot occur.
As shown in fig. 16-17, as an embodiment of the brake-off state monitoring mechanism 240, the brake-off state monitoring mechanism 240 is a micro switch mounted on the control board 220, the micro switch is electrically connected with the control unit, a side surface of the micro switch is connected with the control board 220, and a shift lever 242 extending to a rotation path of the driving part 212 is arranged at a top end of the micro switch. The brake-off 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 mounted 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 portion 212, the micro switch is disposed between the circuit board 241 and the end surface of the bottom end of the driving portion 212, a side surface of one side of the micro switch is connected to the control board 220, and an opposite side surface of the micro switch is matched with the end surface of the bottom end of the driving portion 212. The brake-off state monitoring mechanism 240 of the present embodiment has a characteristic of reliable engagement.
Further, the driving mechanism includes a motor 221 connected to the control unit of the control board 220, a screw rod 222 connected to the motor 221, a first gear 223 meshed with the screw rod 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 portion of the third gear 225, when the breaker unit 100 needs to be driven to be closed, the motor 221 drives the screw rod 222 to rotate, and drives the first gear 223, the second gear 224, and the third gear 225 to rotate in sequence, and the connecting rod 226 is driven by the third gear 225 to push the auxiliary handle 210 to drive the operation handle 110 to close the breaker unit 100.
Further, an initial position detecting mechanism 227 and a closing position detecting mechanism 228 which are respectively matched with the third gear 225 are arranged around the third gear 225, the initial position detecting mechanism 227 and the closing position detecting mechanism 228 are respectively connected with the control unit of the control board 220, a driving boss 2280 which is respectively matched with the initial position detecting mechanism 227 and the closing position detecting mechanism 228 is arranged on the side face of the third gear 225, the initial position detecting mechanism 227 and the closing position detecting mechanism 228 are respectively matched with the rotating path of the driving boss 2280, and the initial position detecting mechanism 227 and the closing position detecting mechanism 228 can respectively detect the initial operation position and the closing operation position of the third gear 225 and feed back to the control unit.
When the circuit breaker unit 100 is disconnected, the motor 221 starts to start, the third gear 225 rotates from the position of the initial position detecting mechanism 227 (at this time, the initial position detecting mechanism 227 is in a closed state) to the direction of the closing position detecting mechanism 228, the connecting rod 226 is driven by the third gear 225 to push the auxiliary handle 210 to drive the operation handle 110 to enable the circuit breaker unit 100 to close, when the closing position detecting mechanism 228 is detected to be in a closed state and the disconnection state monitoring mechanism 240 is detected to be in an open state, the product is successfully closed, the motor is rotated to the initial position S2, the S2 micro switch is turned on, and the motor stops rotating. The third gear 225 triggers the closing position detecting mechanism 228 when it rotates to the closing operation position, which indicates that the closing operation has been completed, but whether the circuit breaker unit 100 completes the closing operation is judged by whether the opening state monitoring mechanism 240 triggers.
Further, the initial position detecting mechanism 227 and the closing position detecting mechanism 228 are micro switches.
Further, a trip unit connected to the circuit breaker unit 100 and a trip detection mechanism 229 engaged with the trip unit are further disposed in the auxiliary module 200, and a trip boss 2290 engaged with the trip unit is disposed on the third gear 225. When the circuit breaker unit 100 needs to be remotely operated to trip, the third gear 225 is driven to reversely rotate to push the trip piece, so that the trip piece drives the circuit breaker unit 100 to trip, the trip detection mechanism 229 is triggered when the trip piece drives the circuit breaker unit 100 to trip, and the trip detection mechanism is fed back to the control unit to indicate that the tripping action is completed and the motor 221 is turned off.
Further, the initial position detecting mechanism 227, the closing position detecting mechanism 228 and the trip detecting mechanism 229 are micro switches, respectively, the closing position detecting mechanism 228 and the opening state monitoring mechanism 240 are disposed on two sides of the initial position detecting mechanism 227, and the trip detecting mechanism 229 is disposed above the initial position detecting mechanism 227.
Further, the initial position detecting mechanism 227, the closing position detecting mechanism 228, and the trip detecting mechanism 229 are provided on one side surface of the control board 220, and the opening state monitoring mechanism 240 is provided on the other side surface of the control board 220.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (10)
1. The automatic switching-on module of the circuit breaker is characterized by comprising an auxiliary shell, an auxiliary handle (210), a control board (220) and a driving mechanism, wherein the auxiliary handle (210), the control board (220) and the driving mechanism are respectively arranged in the auxiliary shell, the auxiliary handle (210) is used for being in linkage connection with an operation handle (110) of the circuit breaker unit (100), a switching-off state monitoring mechanism (240) matched with the auxiliary handle (210) is arranged in the auxiliary shell, the control board (220) is provided with a control unit, the switching-off state monitoring mechanism (240) and the driving mechanism are respectively connected with the control unit of the control board (220), the auxiliary handle (210) is driven by the operation handle (110) to trigger the switching-off state monitoring mechanism (240) when the circuit breaker unit (100) trips, and after receiving a circuit breaker switching-off signal transmitted by the switching-off state monitoring mechanism (240), the control mechanism is controlled to push the auxiliary handle (210) to drive the operation handle (110) to switch on the circuit breaker unit (100);
Still including getting electric mechanism (500) and be used for sheltering from shell (550) of getting electric mechanism (500), automatic closing module is assembled in circuit breaker unit (100) one side, get electric mechanism (500) including get electric piece (510) with wiring mechanism (700) electricity of circuit breaker unit (100), with the power transmission mechanism that control panel (220) electricity is connected and connect the coupling mechanism between getting electric piece (510) and power transmission mechanism, wiring mechanism (700) include connector holder (720) and binding screw (710), get electric piece (510) and become U type structure, behind screw rod (711) both sides of binding screw (710) of the electric piece (510) cover of getting of U type structure, screw cap (712) of screwing binding screw (710) will get electric piece (510) and compress tightly on connector holder (720).
2. The automatic switching-on module of a circuit breaker according to claim 1, wherein the automatic switching-on module is further provided with a mode switching mechanism, the mode switching mechanism is connected with a control unit of the control board (220) and is used for setting the automatic switching-on module to be in a manual mode or an automatic mode, if the mode switching mechanism is set to be in the manual mode, the control unit does not automatically control the driving mechanism to enable the circuit breaker unit (100) to switch on, 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 a switching-off state, and after a certain delay time t1, the control unit automatically controls the driving mechanism to push the auxiliary handle (210) to drive the operation handle (110) to enable the circuit breaker unit (100) to switch on.
3. The automatic closing module of the circuit breaker according to claim 2, wherein the mode switching mechanism of the automatic closing module is also provided with a self-locking state in an automatic mode, 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 (240) within a certain fault monitoring time t2, and the circuit breaker unit (100) is not automatically closed any more, wherein m is larger than 1.
4. The automatic closing module of a circuit breaker according to claim 3, wherein the control unit monitors that the circuit breaker is switched from the open state to the closed state through the open state monitoring mechanism (240) after the automatic closing module enters the self-locking state, and the automatic closing module releases the self-locking state after the closed state continues for at least a certain self-locking recovery time t 3.
5. The automatic closing module of a circuit breaker according to claim 3, wherein the control unit stores a record of each opening time after detecting a switch-on state of the circuit breaker to an opening state through the opening state monitoring mechanism (240);
the control unit acquires the state of the mode conversion mechanism, and if the mode is a manual mode, the switching-on operation is not automatically executed;
If the automatic mode is adopted, the opening time record of the last m pieces is read, the time difference between the last first opening time and the last m pieces of opening time is compared with the fault monitoring time t2, if the opening 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 operation handle (110) to enable the breaker unit (100) to be closed, and if the opening time difference is less than the fault monitoring time t2, the automatic control driving mechanism enters a self-locking state and does not automatically enable the breaker unit (100) to be closed.
6. The automatic closing module of a circuit breaker according to claim 1, wherein the auxiliary handle (210) comprises a pivoting part (211), a driving part (212) and a linkage part (213) which are respectively arranged at two ends of the pivoting part (211), the linkage part (213) is connected with the operating handle (110) of the circuit breaker unit (100) through a linkage piece (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 automatic closing module of a circuit breaker according to claim 6, wherein the opening state monitoring mechanism (240) is a micro switch installed on the control board (220), a deflector rod (242) extending to a rotating path of the driving part (212) is arranged at the top end of the micro switch, or the opening state monitoring mechanism (240) comprises a circuit board (241) vertically connected with the control board (220) and a micro switch installed on the side surface of the circuit board (241), the circuit board (241) is opposite to the end surface of the bottom end of the driving part (212), and the micro switch is arranged between the circuit board (241) and the end surface of the bottom end of the driving part (212).
8. The automatic closing 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 board (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 with the eccentric position of the third gear (225), and the auxiliary handle (210) is pushed by the connecting rod (226) to drive the operating handle (110) to close the circuit breaker unit (100).
9. The automatic closing module of the circuit breaker according to claim 8, wherein an initial position detection mechanism (227) and a closing 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 closing 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 closing position detection mechanism (228) is arranged on the side face of the third gear (225), and the initial position detection mechanism (227) and the closing position detection mechanism (228) are respectively matched on a rotating path of the driving boss (2280).
10. The automatic switching-on module of the circuit breaker according to claim 9, wherein the auxiliary module (200) is further internally provided with a trip member connected with the circuit breaker unit (100) and a trip detection mechanism (229) matched with the trip member, a trip boss (2290) matched with the trip member is arranged on the third gear (225), the third gear (225) is driven to reversely rotate to push the trip member so as to drive the circuit breaker unit (100) to trip, the initial position detection mechanism (227), the switching-on position detection mechanism (228) and the trip detection mechanism (229) are micro switches respectively, the switching-on position detection mechanism (228) and the switching-off state detection mechanism (229) are arranged on two sides of the initial position detection mechanism (227), the trip detection mechanism (229) is arranged above the initial position detection mechanism (227), the switching-on position detection mechanism (228) and the trip detection mechanism (229) are arranged on one side surface of the control board (220), the switching-off state detection mechanism (240) is arranged on the other side surface of the control board (220), the wiring block (720) comprises a movable wiring block (721) and a wiring block (721) which can be inserted into the wiring block (722) and is arranged outside the wiring block (722), the wiring screw (710) passes through the wiring board (722) positioned at the outer side of the wiring frame (721) and is in threaded connection with the wiring frame (721), and the wiring screw (710) can drive the wiring board (722) and the wiring frame (721) to move close to each other by rotating the wiring screw (710), so that the wiring frame (721) and the wiring screw (710) respectively compress the lead and the electricity taking sheet (510) at two ends of the wiring board (722).
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| CN202010306968.2A CN113539758B (en) | 2020-04-17 | 2020-04-17 | Automatic closing module for circuit breakers |
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| CN202010306968.2A CN113539758B (en) | 2020-04-17 | 2020-04-17 | Automatic closing module for circuit breakers |
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| CN113823535A (en) * | 2021-11-04 | 2021-12-21 | 贵州泰永长征技术股份有限公司 | Intelligent miniature circuit breaker |
| CN114597105B (en) * | 2022-03-17 | 2024-06-11 | 德力西电气有限公司 | Circuit breaker and control method thereof |
| CN117153635A (en) * | 2023-09-14 | 2023-12-01 | 厦门弘新智能科技有限公司 | A circuit breaker that can be remotely operated and controlled |
| CN117198830B (en) * | 2023-09-22 | 2024-04-05 | 杭州天卓网络有限公司 | An Internet of Things circuit breaker applied to smart power and control method thereof |
| CN117253760B (en) * | 2023-11-03 | 2024-07-26 | 威胜能源技术股份有限公司 | Intelligent energy cost control circuit breaker |
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