CN115101393B - Automatic closing device for low-voltage switch voltage-losing tripping - Google Patents
Automatic closing device for low-voltage switch voltage-losing tripping Download PDFInfo
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- CN115101393B CN115101393B CN202210541721.8A CN202210541721A CN115101393B CN 115101393 B CN115101393 B CN 115101393B CN 202210541721 A CN202210541721 A CN 202210541721A CN 115101393 B CN115101393 B CN 115101393B
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- 230000007246 mechanism Effects 0.000 claims abstract description 59
- 230000005611 electricity Effects 0.000 claims abstract description 43
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 239000000523 sample Substances 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 10
- 230000002159 abnormal effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
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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
- H01H71/66—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
- H01H71/12—Automatic release mechanisms with or without manual release
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides a low-voltage switch voltage-losing tripping automatic closing device, which relates to the technical field of circuit breaker reclosing and comprises a body, a rotating shaft, a transmission mechanism, a power taking device and a control board; the body is provided with a plurality of hook mechanisms which are used for fixedly connecting the body and the low-voltage switch; the rotating shaft penetrates through the body, and the transmission mechanism is arranged on the rotating shaft in a penetrating way; a driving device is arranged on one side of the transmission mechanism, and the driving device is in transmission connection with the transmission mechanism; the four power taking devices are connected with the body through flexible wires, three power taking devices are arranged at the upper end of the body, and one power taking device is arranged at the lower end of the body; the control panel is respectively and electrically connected with the driving device and the electricity taking device. The invention can automatically judge and distinguish the voltage-losing tripping and other fault tripping, and can automatically close the low-voltage switch after the voltage returns to normal when the voltage-losing tripping is performed.
Description
Technical Field
The invention relates to the technical field of reclosing of circuit breakers, in particular to an automatic closing device for a low-voltage switch under-voltage trip.
Background
Faults such as short circuit and grounding often occur in the power transmission line, so that temporary voltage loss fluctuation of a low-voltage distribution network power supply system is caused, a large number of low-voltage distribution network switches are caused to lose voltage and trip, and power failure of residents in a large area is caused. When the power transmission line discharges faults, the power grid voltage is recovered to be normal, and the low-voltage distribution network switch does not have the voltage-losing tripping reclosing function, the power supply is recovered by adopting a manual field closing mode at present, the time and the labor are consumed, the efficiency is low, the power supply reliability is not guaranteed, the recovery power supply time is long, and a large amount of complaints and power supply are caused. In order to quickly recover domestic electricity, improve power supply efficiency, reduce work orders and complaints, save time and labor, and urgently need to develop an automatic switching-on device for the voltage-losing tripping of a low-voltage distribution network switch.
Disclosure of Invention
The invention aims to solve the technical problems that: the defect that the low-voltage switch in the pipeline cannot be reclosed due to voltage-losing tripping of the low-voltage switch in the prior art is overcome.
In order to solve the problems, the invention adopts the following technical scheme:
the low-voltage switch voltage-losing tripping automatic closing device comprises a body, a rotating shaft, a transmission mechanism, an electricity taking device and a control board; the body is provided with a plurality of hook mechanisms which are used for fixedly connecting the body and the low-voltage switch; the rotating shaft penetrates through the body, and the transmission mechanism is arranged on the rotating shaft in a penetrating way; a driving device is arranged on one side of the transmission mechanism, and the driving device is in transmission connection with the transmission mechanism; the four power taking devices are connected with the body through flexible wires, three power taking devices are arranged at the upper end of the body, and one power taking device is arranged at the lower end of the body; the control panel is respectively and electrically connected with the driving device and the electricity taking device.
According to the technical scheme, the transmission mechanism further preferably comprises a first gear, a second gear and a ratchet wheel, the first gear and the second gear are connected in a meshed mode, the ratchet wheel is sleeved in the first gear, the ratchet wheel and the first gear rotate coaxially, a fixing pin is arranged on the first gear, a pawl is sleeved on the fixing pin, and the pawl is connected with the ratchet wheel in an abutting mode; the second gear is fixedly connected with an output shaft of the driving device.
Preferably, the number of the fixing pins is one or two or three or four, the torsion spring is sleeved on the fixing pins, one end of the torsion spring is fixedly connected with the first gear, and the other end of the torsion spring is fixedly connected with the pawl.
Preferably, the ratchet wheel is fixedly connected with the rotating shaft by welding or is connected with the rotating shaft by a key or is connected with the rotating shaft by a pin, and the first gear is connected with the rotating shaft bearing.
Preferably, the outer end of the rotating shaft is provided with an inner hexagonal cylinder head, the inner end of the rotating shaft is provided with a hexagonal square head, the inner hexagonal cylinder head is used for being abutted with an inner hexagonal wrench, and the hexagonal square head is used for being abutted with a low-voltage switch.
Preferably, the electricity taking device comprises a shell, a magnet, an electricity taking needle and a handle, wherein the handle is arranged on the shell, the magnet is embedded in the shell, and the electricity taking needle is connected with a control board through a wire; the shell is provided with a probe groove, and the power taking needle is arranged in the probe groove and freely slides along the probe groove; the end part of the electricity taking needle extends out of the shell, a spring is arranged on the electricity taking needle in a penetrating mode, the spring enables the electricity taking needle to move away from the probe groove, and the shell and the handle are made of insulating materials.
Preferably, the hook mechanism comprises a hook plate, a supporting plate and a pressing plate, wherein hook teeth are arranged at the end part of the hook plate, one end of the supporting plate is fixedly connected with the body, the other end of the supporting plate is connected with a pressing plate rotating shaft, and one end of the hook plate is connected with a pressing plate middle section rotating shaft; the number of the hook mechanisms is eight, and the hook mechanisms are respectively distributed at the upper end and the lower end of the body.
Preferably, the driving mechanism includes a motor and a reduction mechanism.
Preferably, the control board comprises a single chip microcomputer module, a memory module, a voltage transformer module, a comparator module and a rectifying module, wherein the single chip microcomputer module is a control center of the control board, the voltage transformer module is used for detecting voltages at the front end and the rear end of the switch, the comparator module is used for judging whether the driving mechanism is started or not, and the rectifying module is used for providing power for the driving mechanism.
An automatic closing method for voltage-losing tripping of a low-voltage switch, which comprises the following steps:
step a, preparing, namely installing a low-voltage switch voltage-losing tripping automatic closing device on the low-voltage switch, and magnetically attracting each power-taking device on a bolt of each binding post of the low-voltage switch;
step b, judging tripping, namely judging whether the low-voltage switch is tripped and opened according to the voltage detection condition of the power taking device at the front end and the rear end of the switch by the control board, wherein the switch is in a tripped and opened state when the voltage at the front end and the rear end of the low-voltage switch is not applied;
step c, judging the tripping type, judging whether the tripping is voltage-losing tripping or not according to the voltage detection conditions of four power taking devices at the front end of the low-voltage switch by the control board, if the voltage at the front end of the low-voltage switch is detected to be abnormal, the tripping is voltage-losing tripping, and if the voltage at the front end of the low-voltage switch is detected to be non-abnormal, the tripping is carried out for other faults;
step d, judging whether the voltage loss fault is recovered or not, and judging whether the voltage loss fault is recovered or not according to the voltage detection condition of the four power taking devices at the front end of the low-voltage switch when the tripping type in the step b is voltage loss tripping; after the voltage-losing fault is eliminated, after a period of delay detection voltage is qualified, starting a voltage-losing tripping automatic closing program;
step e, automatic switching-on operation, namely outputting and driving the driving mechanism to act through the control panel, and sequentially driving the second gear and the first gear to rotate under the action of the driving mechanism so as to drive the ratchet wheel to rotate, so that the rotating shaft drives the switching-on mechanism of the low-voltage switch to switch on;
and f, judging a closing result, starting a closing action according to the low-voltage switch driven by the rotating shaft in the step d, and after the low-voltage switch is successfully closed, detecting voltage by the power taking device at the rear end of the low-voltage switch, and then, closing the low-voltage switch successfully, wherein the driving mechanism is controlled by the control panel to stop rotating at the moment, so that automatic closing operation is completed.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a low-voltage switch voltage-losing tripping automatic closing device and a closing method, which can automatically judge and distinguish voltage-losing tripping and other fault tripping, and can automatically close the low-voltage switch after the voltage returns to normal when the voltage-losing tripping is performed.
2. The invention provides a low-voltage switch voltage-losing tripping automatic closing device and a closing method.
3. The invention provides an automatic switching-on device and a switching-on method for a low-voltage switch under-voltage release.
Drawings
FIG. 1 is a schematic side view of a device according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of the real device of the present invention;
FIG. 3 is a schematic elevational view of the apparatus of the present invention;
FIG. 4 is a schematic diagram of the transmission mechanism of the device of the present invention;
FIG. 5 is an enlarged schematic view of the hook mechanism of the present invention;
FIG. 6 is a schematic diagram of the power take-off device of the present invention;
FIG. 7 is a schematic view of the power take-off device of the present invention;
FIG. 8 is a schematic diagram of an enlarged structure of an electric needle of the device of the invention;
FIG. 9 is a schematic diagram of a control flow of the device of the present invention.
In the figure: 1. the device comprises a body, 2, a rotating shaft, 21, an inner hexagonal cylindrical head, 22, a hexagonal head, 3, a transmission mechanism, 31, a first gear, 32, a second gear, 33, a ratchet wheel, 34, a fixed pin, 35, a pawl, 36, a torsion spring, 37, 4, an electricity taking device, 41, a shell, 42, a magnet, 43, an electricity taking needle, 44, a handle, 45, a spring, 46, a probe groove, 5, a control board, 6, a hook mechanism, 61, a hook plate, 62, a support board, 63, a pressing board, 7, a driving device, 8, a wiring nose, 9, a fixed bolt, 10 and a low-voltage switch.
Detailed Description
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "first", "second", "middle", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely relational terms determined for convenience in describing structural relationships of the various components or elements of the present disclosure, and do not denote any one of the components or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
The following examples are set forth in order to more particularly describe the principles of the present invention, and are intended to provide a more thorough description of the present invention.
As shown in fig. 1 to 9, the invention provides a low-voltage switch voltage-losing tripping automatic closing device, which comprises a body 1, a rotating shaft 2, a transmission mechanism 3, a power taking device 4 and a control board 5; the body 1 is provided with a plurality of hook mechanisms 6, and the hook mechanisms 6 are used for fixedly connecting the body 1 and the low-voltage switch; the rotating shaft 2 penetrates through the body 1, and the transmission mechanism 3 is arranged on the rotating shaft 2 in a penetrating way; a driving device 7 is arranged on one side of the transmission mechanism 3, and the driving device 7 is in transmission connection with the transmission mechanism 3; four electricity taking devices 4 are arranged, flexible wires are connected between the electricity taking devices 4 and the body 1, three electricity taking devices 4 are arranged at the upper end of the body 1, and one electricity taking device 4 is arranged at the lower end of the body 1; the control board 5 is electrically connected with the driving device 7 and the electricity taking device 4 respectively. In the embodiment of the invention, the device body 1 and the low-voltage switch 10 are fixedly connected together through the hook mechanism 6, the power taking device 4 is magnetically adsorbed on the fixing bolt 9 of the wiring nose 8, the power taking device 4 is provided with the groove structure according to the size of the fixing bolt 9, so that the power taking device 4 is exactly clamped on the fixing bolt 9, meanwhile, the power taking needle on the power taking device 4 is abutted against the wiring nose 8, and the power supply at the front end of the low-voltage switch is obtained through the power taking needle to supply power to the device control board 5 for working. The device can be suitable for low-voltage switches 10 of different manufacturer types, the low-voltage switches 10 are intelligent reclosing circuit breakers generally, manual switching-on knobs are arranged, the common socket head cap wrench is used as the manual switching-on wrench, the situation that the low-voltage switches cannot be switched on by themselves when damaged is prevented, and the device can design the proper position of the rotating shaft 2 according to the different manual switching-on positions of the different manufacturer types.
The transmission mechanism 3 comprises a first gear 31, a second gear 32 and a ratchet wheel 33, wherein the first gear 31 and the second gear 32 are in meshed connection, the ratchet wheel 33 is sleeved in the first gear 31, the ratchet wheel 33 and the first gear 31 coaxially rotate, a fixed pin 34 is arranged on the first gear 31, a pawl 35 is sleeved on the fixed pin 34, and the pawl 35 is in abutting connection with the ratchet wheel 33; the second gear 32 is fixedly connected with the output shaft of the driving device 7. In the embodiment of the invention, the transmission mechanism 3 comprises a first gear 31, a second gear 32 and a ratchet wheel 33, wherein the first gear 31 is provided with an embedded groove, the ratchet wheel 33 is arranged in the embedded groove of the first gear 31 and coaxially rotates, the ratchet wheel 33 is fixedly connected with the rotating shaft 2 and is used for driving the rotating shaft 2 to rotate, the ratchet wheel 33 is provided with inclined teeth for controlling the ratchet wheel 33 to rotate unidirectionally, a pawl 35 is also arranged in the embedded groove of the first gear 31, the pawl 35 is in abutting fit with the inclined teeth of the ratchet wheel 33, when the first gear 31 rotates clockwise, the ratchet wheel can drive the ratchet wheel 33 to rotate, and when the ratchet wheel 33 rotates clockwise, the ratchet wheel cannot drive the first gear 31 to rotate, a torsion spring 36 is arranged on a fixing pin 34 and is used for controlling the pawl 35 to be tightly matched with the ratchet wheel 33 so as to prevent the ratchet wheel 33 from skidding.
The number of the fixing pins 34 is one or two or three or four, the torsion springs 36 are sleeved on the fixing pins 34, one ends of the torsion springs 36 are fixedly connected with the first gear 31, and the other ends of the torsion springs 36 are fixedly connected with the pawls 35. The number of the fixing pins 34 in the device can be one or two or three or four, and in the embodiment of the invention, the two fixing pins are arranged at two ends of the ratchet wheel 33 oppositely, so that the unidirectional transmission requirement can be realized, the design difficulty of a transmission structure is reduced, and the device has strong practicability and simplicity.
The ratchet wheel 33 is fixedly connected with the rotating shaft 2 by welding or is connected with the rotating shaft 2 by a key or is connected with the rotating shaft by a pin, and the first gear 31 is connected with the rotating shaft 2 by a bearing.
The outer end of the rotating shaft 2 is provided with an inner hexagonal cylindrical head 21, the inner end of the rotating shaft 2 is provided with a hexagonal square head 22, the inner hexagonal cylindrical head 21 is used for being abutted with an inner hexagonal wrench, and the hexagonal square head 22 is used for being abutted with a low-voltage switch. In the embodiment of the present invention, the rotating shaft 2 may be configured as a cylinder, a square, or a hexagonal. In the embodiment of the invention, the hexagonal prism is integrally formed with the hexagonal square head 22.
The electricity taking device 4 comprises a shell 41, a magnet 42, an electricity taking needle 43 and a handle 44, wherein the handle 44 is arranged on the shell 41, the magnet 42 is embedded in the shell 41, and the electricity taking needle 43 is connected with a control board 5 through a wire; the shell 41 is provided with a probe groove 46, and the power taking needle 43 is arranged in the probe groove 46 and freely slides along the probe groove 46; the end of the power taking needle 43 extends out of the shell 41, a spring 45 is arranged on the power taking needle 43 in a penetrating mode, the spring 45 enables the power taking needle 43 to move away from the probe groove 46, and the shell 41 and the handle 44 are made of insulating materials. In the embodiment of the invention, the power taking needle 43 and the power taking device shell 41 can move relatively, and the end part of the power taking needle 43 is exposed out of the power taking device shell 41 and is used for contacting a movable power supply with a wire connecting nose. The electricity taking needle 43 is provided with a spring 45, the spring 45 enables the electricity taking needle 43 to be in a trend of popping up the probe groove 46, when the electricity taking device 4 is attracted to the fixing bolt, extrusion force is generated on the electricity taking needle 43 through magnetic force, and the electricity taking needle 43 is better contacted with the wiring nose under the double functions of spring force and magnetic force. In the embodiment of the invention, the design of the invention can also avoid the defects of poor power taking and the like caused by the uncertainty of the contact position of the power taking device 4 and the wiring nose.
A magnet 42 and an electricity taking needle 43 are embedded in the shell 41, and the electricity taking needle 43 is connected with the control board 5 through a wire; the housing 41 and the handle 44 are made of insulating materials. The electricity taking device 4 in the device is used for obtaining the function of a power supply from a power grid, detecting whether the low-voltage switch 10 has tripping and tripping conditions or not, and judging the type of the tripping and tripping through the control board 5. In the embodiment of the invention, the number of the power taking devices 4 is four, the front ends of the low-voltage switches 10 are three, three-phase voltages of the low-voltage switches are respectively adopted, and one power taking device is arranged at the rear end of the low-voltage switch 10 and is used for detecting whether the low-voltage switch 10 is successfully switched on. In the embodiment of the invention, the magnet is embedded in the electricity taking device 4 and is used for being adsorbed on a fixing bolt, the device is convenient to assemble and disassemble, and can be disassembled from the low-voltage switch 10 when not in use, and when the device is needed to be applied, the device is only needed to be clamped on the shell of the low-voltage switch 10, and meanwhile, the four electricity taking devices 4 are respectively attracted at corresponding positions.
The hook mechanism 6 comprises a hook plate 61, a supporting plate 62 and a pressing plate 63, wherein hook teeth are arranged at the end part of the hook plate 61, one end of the supporting plate 62 is fixedly connected with the body 1, the other end of the supporting plate 62 is connected with a rotating shaft of the pressing plate 63, and one end of the hook plate 61 is connected with a rotating shaft of the middle section of the pressing plate 63; the number of the hook mechanisms 6 is eight, and the hook mechanisms are respectively distributed at the upper end and the lower end of the body 1.
The driving mechanism 7 includes a motor and a reduction mechanism. The motor in the device can be a direct current motor or an alternating current motor, and the direct current motor is adopted in the embodiment of the invention, so that the direct current motor has large starting torque and is convenient for driving the rotating shaft 2 to rotate. The power supply of the drive mechanism 7 in the embodiment of the invention is provided by the control board 5.
The control board 5 comprises a single chip microcomputer module, a memory module, a voltage transformer module, a comparator module and a rectifying module, wherein the single chip microcomputer module is a control center of the control board 5, the voltage transformer module is used for detecting voltages at the front end and the rear end of a switch, the comparator module is used for judging whether the driving mechanism 7 is started or not, and the rectifying module is used for providing power for the driving mechanism 7. The control board 5 in the device is a singlechip control board, the voltage signal of the front end of the low-voltage switch 10 collected by the electricity taking module 4 is used for judging whether the voltage of the front end of the low-voltage switch 10 is abnormal or not through the comparator module, and if so, the voltage of the rear end of the low-voltage switch 10 is judged to be lost or released according to the voltage condition of the rear end of the low-voltage switch. When the voltage-losing tripping occurs, the control board 5 starts to start the voltage-losing tripping reclosing operation after detecting that the front-end voltage of the low-voltage switch is recovered to be normal. When the control board 5 controls the device to drive the low-voltage switch to be successfully switched on, the voltage signal is detected through the power taking device 4 at the rear end of the low-voltage switch, the driving device 7 is controlled to stop working, and the voltage-losing tripping reclosing operation of the low-voltage switch is completed.
As shown in fig. 9, the invention provides an automatic closing method for voltage-losing and tripping of a low-voltage switch, which comprises the following steps:
step a, preparing, namely installing a low-voltage switch voltage-losing tripping automatic closing device on the low-voltage switch, and magnetically attracting each power taking device 4 on bolts of each binding post of the low-voltage switch;
step b, judging tripping, namely judging whether the low-voltage switch is tripped and opened according to the voltage detection condition of the power taking device 4 at the front end and the rear end of the switch by the control board 5, wherein the switch is in a tripped and opened state when the voltage exists at the front end and the rear end of the low-voltage switch is not provided with voltage;
step c, judging the tripping type, judging whether the tripping is voltage-losing tripping or not according to the voltage detection conditions of the four power taking devices 4 at the front end of the low-voltage switch by the control board 5, if the voltage at the front end of the low-voltage switch is detected to be abnormal, the tripping is voltage-losing tripping, and if the voltage at the front end of the low-voltage switch is detected to be non-abnormal, the tripping is carried out for other faults;
step d, judging whether the voltage loss fault is recovered or not, and judging whether the voltage loss fault is recovered or not according to the voltage detection condition of the four power taking devices 4 at the front end of the low-voltage switch when the tripping type in the step b is voltage loss tripping; after the voltage-losing fault is eliminated, after a period of delay detection voltage is qualified, starting a voltage-losing tripping automatic closing program;
step e, automatic switching-on operation, namely outputting and driving the driving mechanism 7 to act through the control board 5, and sequentially driving the second gear 32 and the first gear 31 to rotate under the action of the driving mechanism 7 so as to drive the ratchet wheel 33 to rotate, so that the rotating shaft 2 drives the switching-on mechanism of the low-voltage switch to switch on;
and f, judging a closing result, and starting a closing action according to the low-voltage switch driven by the rotating shaft 2 in the step d, wherein when the voltage is detected by the power taking device 4 at the rear end of the low-voltage switch after the low-voltage switch is successfully closed, the closing of the low-voltage switch is successful, and at the moment, the driving mechanism 7 is controlled to stop rotating through the control board 5, so that the automatic closing operation is completed.
The above embodiments are not intended to limit the present invention, however, and the present invention is not limited to the above examples, but is also intended to be within the scope of the present invention.
Claims (8)
1. The utility model provides a low tension switchgear decompression dropout automatic closing device which characterized in that:
comprises a body (1), a rotating shaft (2), a transmission mechanism (3), an electricity taking device (4) and a control board (5); a plurality of hook mechanisms (6) are arranged on the body (1), and the hook mechanisms (6) are used for fixedly connecting the body (1) and the low-voltage switch; the rotating shaft (2) penetrates through the body (1), and the transmission mechanism (3) is arranged on the rotating shaft (2) in a penetrating mode; a driving device (7) is arranged on one side of the transmission mechanism (3), and the driving device (7) is in transmission connection with the transmission mechanism (3); four electricity taking devices (4) are arranged, flexible wires are connected between the electricity taking devices (4) and the body (1), three electricity taking devices (4) are arranged at the upper end of the body (1), and one electricity taking device (4) is arranged at the lower end of the body (1); the control board (5) is respectively and electrically connected with the driving device (7) and the electricity taking device (4); the transmission mechanism (3) comprises a first gear (31), a second gear (32) and a ratchet wheel (33), wherein the first gear (31) and the second gear (32) are in meshed connection, the ratchet wheel (33) is sleeved in the first gear (31), the ratchet wheel (33) and the first gear (31) rotate coaxially, a fixing pin (34) is arranged on the first gear (31), a pawl (35) is sleeved on the fixing pin (34), and the pawl (35) is in butt connection with the ratchet wheel (33); the second gear (32) is fixedly connected with an output shaft of the driving device (7);
the electricity taking device (4) comprises a shell (41), a magnet (42), an electricity taking needle (43) and a handle (44), wherein the handle (44) is arranged on the shell (41), the magnet (42) is embedded in the shell (41), and the electricity taking needle (43) is connected with a lead of a control board (5); the shell (41) is provided with a probe groove (46), and the power taking needle (43) is arranged in the probe groove (46) and freely slides along the probe groove (46); the end part of the electricity taking needle (43) extends out of the shell (41), a spring (45) is arranged on the electricity taking needle (43) in a penetrating mode, the spring (45) enables the electricity taking needle (43) to move away from the probe groove (46), and the shell (41) and the handle (44) are made of insulating materials.
2. The low-voltage switch voltage-loss trip automatic closing device according to claim 1, wherein: the number of the fixing pins (34) is one or two or three or four, torsion springs (36) are sleeved on the fixing pins (34), one end of each torsion spring (36) is fixedly connected with the first gear (31), and the other end of each torsion spring (36) is fixedly connected with the corresponding pawl (35).
3. The low-voltage switch voltage-loss trip automatic closing device according to claim 1, wherein: the ratchet wheel (33) is fixedly connected with the rotating shaft (2) in a welding mode or in a key connection mode or in a pin connection mode, and the first gear (31) is connected with the rotating shaft (2) in a bearing mode.
4. The low-voltage switch voltage-loss trip automatic closing device according to claim 1, wherein: the outer end of the rotating shaft (2) is provided with an inner hexagonal cylindrical head (21), the inner end of the rotating shaft (2) is provided with a hexagonal square head (22), the inner hexagonal cylindrical head (21) is used for being abutted with an inner hexagonal wrench, and the hexagonal square head (22) is used for being abutted with a low-voltage switch.
5. The low-voltage switch voltage-loss trip automatic closing device according to claim 1, wherein: the hook mechanism (6) comprises a hook plate (61), a supporting plate (62) and a pressing plate (63), wherein hook teeth are arranged at the end part of the hook plate (61), one end of the supporting plate (62) is fixedly connected with the body (1), the other end of the supporting plate (62) is connected with a rotating shaft of the pressing plate (63), and one end of the hook plate (61) is connected with a rotating shaft of the middle section of the pressing plate (63); the number of the hook mechanisms (6) is eight, and the hook mechanisms are respectively distributed at the upper end and the lower end of the body (1).
6. The low-voltage switch voltage-loss trip automatic closing device according to claim 1, wherein: the driving device (7) comprises a motor and a speed reducing mechanism.
7. The low-voltage switch voltage-loss trip automatic closing device according to claim 1, wherein: the control board (5) comprises a single chip microcomputer module, a memory module, a voltage transformer module, a comparator module and a rectifying module, wherein the single chip microcomputer module is a control center of the control board (5), the voltage transformer module is used for detecting the voltages at the front end and the rear end of a switch, the comparator module is used for judging whether a driving device (7) is started or not, and the rectifying module is used for providing power for the driving device (7).
8. An automatic closing method for voltage-losing tripping of a low-voltage switch is characterized by comprising the following steps of:
the automatic closing method comprises the following steps:
step a, preparing, namely installing the low-voltage switch voltage-losing tripping automatic closing device in any one of claims 1 to 7 on the low-voltage switch, and magnetically attracting each power taking device (4) on a bolt of each binding post of the low-voltage switch;
step b, judging tripping, namely judging whether the low-voltage switch is tripped and opened according to the voltage detection condition of the power taking device (4) at the front end and the rear end of the switch by the control board (5), wherein the switch is in a tripped and opened state when the voltage at the front end and the rear end of the low-voltage switch is not applied;
step c, judging the tripping type, judging whether the tripping is voltage-losing tripping or not according to the voltage detection conditions of the four power taking devices (4) at the front end of the low-voltage switch by the control board (5), if the voltage at the front end of the low-voltage switch is detected to be abnormal, the tripping is voltage-losing tripping, and if the voltage at the front end of the low-voltage switch is detected to be non-abnormal, the tripping is carried out on other faults;
step d, judging whether the voltage-losing fault is recovered or not, and judging whether the voltage-losing fault is recovered or not according to the voltage detection condition of the four power-taking devices (4) at the front end of the low-voltage switch when the tripping type in the step b is voltage-losing tripping; after the voltage-losing fault is eliminated, after a period of delay detection voltage is qualified, starting a voltage-losing tripping automatic closing program;
step e, automatic switching-on operation, namely outputting and driving the driving device (7) to act through the control board (5), and sequentially driving the second gear (32) and the first gear (31) to rotate under the action of the driving device (7), so as to drive the ratchet wheel (33) to rotate, and then the rotating shaft (2) drives the switching-on mechanism of the low-voltage switch to switch on;
and f, judging a closing result, and starting a closing action according to the low-voltage switch driven by the rotating shaft (2) in the step d, wherein when the voltage is detected by the power taking device (4) at the rear end of the low-voltage switch after the low-voltage switch is successfully closed, the closing of the low-voltage switch is successful, and at the moment, the driving device (7) is controlled by the control board (5) to stop rotating, so that the automatic closing operation is completed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311159666.7A CN117116718A (en) | 2022-05-17 | 2022-05-17 | Low-voltage switch closing method |
| CN202210541721.8A CN115101393B (en) | 2022-05-17 | 2022-05-17 | Automatic closing device for low-voltage switch voltage-losing tripping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210541721.8A CN115101393B (en) | 2022-05-17 | 2022-05-17 | Automatic closing device for low-voltage switch voltage-losing tripping |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311159666.7A Division CN117116718A (en) | 2022-05-17 | 2022-05-17 | Low-voltage switch closing method |
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| Publication Number | Publication Date |
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| CN115101393A CN115101393A (en) | 2022-09-23 |
| CN115101393B true CN115101393B (en) | 2023-09-01 |
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| CN202311159666.7A Pending CN117116718A (en) | 2022-05-17 | 2022-05-17 | Low-voltage switch closing method |
| CN202210541721.8A Active CN115101393B (en) | 2022-05-17 | 2022-05-17 | Automatic closing device for low-voltage switch voltage-losing tripping |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311159666.7A Pending CN117116718A (en) | 2022-05-17 | 2022-05-17 | Low-voltage switch closing method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2739784Y (en) * | 2003-03-18 | 2005-11-09 | 贾晓东 | Under-voltage trip re-closing device for automatic switch |
| CN201549868U (en) * | 2009-11-21 | 2010-08-11 | 杭州比特信息技术有限公司 | Low-voltage switch intelligent controller |
| CN106783419A (en) * | 2017-02-19 | 2017-05-31 | 温州圣普电气有限公司 | A kind of reclosing breaker |
| CN208985934U (en) * | 2018-11-26 | 2019-06-14 | 深圳时空科技集团有限公司 | A kind of strong and weak switch-dividing being electrically isolated |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113949038B (en) * | 2020-07-16 | 2024-07-19 | 施耐德电器工业公司 | Driving device and driving method of reclosing device |
-
2022
- 2022-05-17 CN CN202311159666.7A patent/CN117116718A/en active Pending
- 2022-05-17 CN CN202210541721.8A patent/CN115101393B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2739784Y (en) * | 2003-03-18 | 2005-11-09 | 贾晓东 | Under-voltage trip re-closing device for automatic switch |
| CN201549868U (en) * | 2009-11-21 | 2010-08-11 | 杭州比特信息技术有限公司 | Low-voltage switch intelligent controller |
| CN106783419A (en) * | 2017-02-19 | 2017-05-31 | 温州圣普电气有限公司 | A kind of reclosing breaker |
| CN208985934U (en) * | 2018-11-26 | 2019-06-14 | 深圳时空科技集团有限公司 | A kind of strong and weak switch-dividing being electrically isolated |
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| Publication number | Publication date |
|---|---|
| CN115101393A (en) | 2022-09-23 |
| CN117116718A (en) | 2023-11-24 |
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