CN111952085A - Fault switching device of isolating switch - Google Patents
Fault switching device of isolating switch Download PDFInfo
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- CN111952085A CN111952085A CN202010554771.0A CN202010554771A CN111952085A CN 111952085 A CN111952085 A CN 111952085A CN 202010554771 A CN202010554771 A CN 202010554771A CN 111952085 A CN111952085 A CN 111952085A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a fault switching device of an isolating switch, relates to the technical field of electric power overhaul equipment, and particularly relates to a fault switching device of the isolating switch. The device includes: the power unit is arranged on the base, the contactor group receives an external control signal, and the contactor group controls the power unit to perform opening and closing actions on an external isolating switch. The device adopts the motor as the power supply, and power pack links to each other with isolator's manual operation mechanism input, uses manpower sparingly, makes the staff keep away from isolator, has ensured staff's safety. The device is also provided with a signal transmitting unit and a signal receiving unit, the signal transmitting unit is in communication connection with the signal receiving unit through radio, a worker can hold the signal transmitting unit by hand to send a radio signal to the signal receiving unit to control the power unit to act, and the operability range of the worker is wide, so that the worker can be guaranteed to be far away from an electrical hazard source.
Description
Technical Field
The invention relates to the technical field of electric power overhaul equipment, in particular to a fault switching device of an isolating switch.
Background
The isolating switch is an important switch device of a power system and mainly plays a role in isolating a power supply. The circuit maintenance device plays a role in isolating a maintenance part from a charged body. When the isolating switch is in the opening position, the contacts have insulation distance meeting the specified requirements and obvious disconnection marks; when the switch is closed, the current under normal loop condition and the current under abnormal condition (such as short circuit) within a specified time can be carried, and the running condition directly influences the transmission and distribution of electric energy and the safe and reliable running of the system.
The isolating switch can be divided into a basic part, an insulator part, a transmission part, an operating mechanism part and a conductive part according to functions, and an operating mechanism of the isolating switch of 35kV or above adopts an electric operating mechanism. The electric operating mechanism is driven by a motor, transmits force to a main shaft of the transmission part through a mechanical speed reducer, drives the middle rotating insulator to rotate through the connecting rod to drive the transfer contact of the conductive part to be inserted into the static contact to complete the opening and closing operation of the conductive part, and is the same as the circuit breaker operating mechanism, and provides operating force for the action of the isolating switch through manual operation, electric operation, pneumatic operation and hydraulic pressure.
The electrical equipment is divided into three states of operation, standby (cold standby and hot standby) and maintenance. Switching an electrical device from one state to another or changing the way the system operates by operating disconnectors, circuit breakers and connecting and disconnecting ground wires, which is called a switching operation.
The isolating switch electric operating mechanism is usually driven by a motor, force is transmitted to a mechanism main shaft through a mechanical speed reducer, and a moving contact of a conductive tube is inserted into or separated from a fixed contact through a connecting rod to drive a middle rotating insulator to rotate, so that the switching-on and switching-off operations of the conductive tube are completed.
The manual operating mechanism of the isolating switch utilizes a main knife switch of the isolating switch to drive a connecting rod on a bearing seat at the bottom of an operating insulator to operate through a main shaft of a manual operating mechanism. When the vertical pull rod of the manual operating mechanism rotates, the main knife switch is driven by the operating insulator to rotate on the horizontal plane, so that the moving contact of the conductive tube is inserted into or withdrawn from the static contact arranged on the post insulator, and the switching-on and switching-off are realized.
The secondary circuit of the electric operating mechanism of the isolating switch is an electric circuit formed by connecting secondary equipment according to certain functional requirements so as to realize the functions of monitoring, measuring, controlling, protecting, adjusting and the like of working conditions of primary system equipment, has a complex structure and consists of secondary components such as a switching-on/off relay, an AC/DC contactor, a phase-failure protection relay, a thermal overload relay, a travel switch, a microswitch, a switching handle, a button and the like.
Because the isolating switch is located outdoors for a long time, the operation environment is severe, the failure rate of the secondary element device is high, the condition that the electric operation cannot be carried out frequently occurs in the switching operation process, and the power supply reliability is seriously influenced.
When the isolating switch has the defect that the isolating switch cannot be electrically operated, two treatment methods are generally adopted.
Firstly, the defect reason is searched, and the operation is continued after the damaged secondary element is replaced. However, the secondary circuit of the isolating switch operating mechanism is complex, so that the time for searching and processing the defects of the secondary circuit is too long, and the speed of switching operation is seriously influenced.
And secondly, a manual operation method is adopted, the isolating switch provided with the electric operating mechanism is usually manually operated by using an operating crank, the process of shaking in the opposite direction needs to be careful during the manual operation, the isolating switch is quickly switched on once slight discharge sound is heard, the switching-on force needs to be mastered by an operator during the switching-on process, but the insulator breakage condition of an insulator part of the isolating switch during the operation process can occur when the operator applies excessive force during the use process, and the life safety of the manual operator is seriously threatened.
The operation sequence of the disconnecting switch and the circuit breaker is also important, the power failure operation must be performed in the sequence of opening the circuit breaker, the load side disconnecting switch and the power supply side disconnecting switch, and the power transmission operation sequence is opposite to the power transmission operation sequence.
Two important operations must be performed before the disconnector is pulled: firstly, the circuit breaker is checked and determined to be at a breaking position, and the purpose is to prevent the misoperation of pulling the disconnecting switch with load caused by the fact that the circuit breaker is not actually broken when the disconnecting switch is pulled, if the circuit breaker is not broken, the disconnecting switch at the load side is pulled first, and the arc short circuit is generated within the protection range of the circuit breaker; a circuit breaker trip occurs; if the power source side isolating switch is pulled first, the arc short circuit is generated outside the protection range of the circuit breaker, the circuit breaker cannot trip, the bus short circuit is caused, the upper-stage circuit breaker trips, and the accident range is expanded.
Again, considering the possibility that the circuit breaker may be accidentally closed due to some unexpected reason during the operation of pulling the disconnector, the closing power of the circuit breaker needs to be disconnected. An operator manually operating the isolating switch can operate the isolating switch only after being qualified through special training, the requirements on the working state of an operator and preparation steps before operation are high in the switching operation, and the operation order needs to be issued and received through issuing and receiving operation tasks, filling in the operation order, examining and checking the operation order, issuing and receiving operation execution commands and then switching operation.
Disclosure of Invention
The invention provides a fault switching device of an isolating switch, which is used for solving the problem that the isolating switch needs manual operation when in fault.
The invention adopts the following technical scheme:
a disconnector fault switching device comprising: the power unit is arranged on the base, the contactor group receives an external control signal, and the contactor group controls the power unit to perform opening and closing actions on an external isolating switch;
the base includes: the device comprises a seat body, a telescopic rod connected with the seat body in a sliding manner, a platform fixedly connected with the telescopic rod and a set screw in threaded connection with the seat body, wherein the set screw is used for locking the telescopic rod on the seat body; the power unit includes: the clamping device comprises a motor, a clamping rod and a clamping joint, wherein the motor, the clamping rod and the clamping joint are fixedly connected with the platform;
the set of contacts is electrically connected to the motor.
Further, still include: the wireless communication device comprises a signal transmitting unit and a signal receiving unit, wherein the signal transmitting unit receives an external input signal and outputs a radio signal according to a preset condition; the signal receiving unit receives a radio signal from the signal transmitting unit, and controls the action of the contact group according to a preset condition to realize the control of the rotating direction of the motor; the signal transmitting unit is in communication connection with the signal receiving unit, and the contact group is electrically connected with the signal receiving unit.
Further, the signal receiving unit includes: the wireless receiving device comprises a first controller, a wireless receiving module and a relay set; the wireless receiving module converts a received radio signal into an electric signal, the first controller receives the electric signal from the wireless receiving module, the first controller outputs a control signal to the relay group according to a preset condition, and the relay group controls the action of the contact group; the wireless receiving module and the relay set are respectively electrically connected with the first controller, and the relay set is electrically connected with the contact set.
Further, the signal transmitting unit includes: the wireless transmission device comprises a key, a second controller and a wireless transmission module, wherein the second controller receives the input of the key, controls the wireless transmission module to transmit a radio signal according to a preset condition, and is respectively and electrically connected with the second controller.
Further, the signal receiving unit further includes: an indicator light for indicating a direction of rotation of the motor, the indicator light electrically connected with the first controller.
Further, the motor is an asynchronous motor, and the motor is provided with a worm gear speed reducer.
Furthermore, the pedestal is equipped with the landing leg, the landing leg with the pedestal is articulated, the landing leg is three at least.
Furthermore, joint head first end with joint pole second end joint, joint head second end is used for the joint outside isolator manual operation mechanism input.
Further, joint head second end is equipped with the edge first cuboid and the second cuboid that the joint head axis direction extends, first cuboid sets up the top of second cuboid, first cuboid and the second cuboid all is equipped with the screw hole that runs through upper and lower surface.
Furthermore, the landing leg is provided with a balancing weight, and the balancing weight is arranged at one end close to the grounding of the landing leg.
The invention has the following positive effects:
a disconnector fault switching device comprising: the power unit is arranged on the base, and the contactor group receives external signal input and controls the power unit to implement opening and closing actions on the external isolating switch. The device adopts the motor as the power supply, and this power supply links to each other with isolator's manual operation mechanism input, uses manpower sparingly, and need not to operate in the region that is close to isolator, makes the staff keep away from isolator, has ensured staff's safety. The device still is equipped with the base, and the base is equipped with the telescopic link that can adjust the motor height to adapt to different isolator and set up the position, make more handy when using, convenient adjustment. The contactor group of the device is used for controlling the rotating direction of the motor, and the trouble that the rotating direction of the motor needs to be changed through wiring when the device is used every time is avoided.
This device still is equipped with signal transmission unit and signal receiving unit, and signal transmission unit carries out communication connection with signal receiving unit through the radio, and the staff can hand signal transmission unit and send radio signal to signal receiving unit, and the staff who holds signal transmission unit can remove in great within range for the staff is guaranteed to keep away from the electrical hazard source. The device can be operated remotely, and can be operated while observing the state of the isolating switch, and can be adjusted at any time according to the state. The signal receiving unit is also provided with an indicator light, so that whether the relay acts or not can be clearly observed.
The pedestal is equipped with the landing leg that can accomodate as further improvement, when needing to use, releases the landing leg, forms stable ground structure, packs up the landing leg when finishing using, saves and takes up an area of the space, is convenient for transport and deposits. The one end that is close to ground connection on the landing leg is equipped with the balancing weight, can adjust holistic focus, offsets the motor and rotates the reverse moment of torsion that the in-process produced for whole more firm.
The clamping joint matched with the clamping rod is provided with a threaded hole, and the threaded hole is provided with a bolt matched with the threaded hole and can be adapted to the input ends of different manual operating mechanisms of the isolating switch.
Drawings
FIG. 1 is a functional block diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the embodiment of the present invention;
FIG. 3 is a schematic diagram of a motor control circuit according to an embodiment of the present invention;
FIG. 4 is a circuit diagram of a signal receiving unit according to an embodiment of the present invention;
FIG. 5 is a schematic circuit diagram of a signal transmitting unit according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a card connector according to an embodiment of the present invention.
In the figure:
a seat body 1;
a telescopic rod 2;
a platform 3;
a motor 4;
a set screw 5;
a chuck rod 6;
a bayonet joint 7;
a worm gear reducer 8;
a support leg 9;
a counterweight 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 6, a fault switching device of a disconnecting switch comprises: the power unit is arranged on the base, the contactor group receives an external control signal, and the contactor group controls the power unit to perform opening and closing actions on an external isolating switch;
the base includes: the device comprises a base body 1, an expansion link 2 connected with the base body 1 in a sliding manner, a platform 3 fixedly connected with the expansion link 2 and a set screw 5 in threaded connection with the base body 1, wherein the set screw 5 is used for locking the expansion link 2 on the base body 1; the power unit includes: with 3 fixed connection's of platform motor 4, joint pole 6 and joint 7, 6 first ends of joint pole and motor 4 fixed connection, 6 second ends of joint pole and 7 joints of joint.
The contact set is electrically connected to the motor 4.
More specifically, pedestal 1 is equipped with the rectangular hole spout, and this rectangular hole runs through pedestal 1 from top to bottom, and telescopic link 2 is the pole that the cross-section is the rectangle, and 2 first ends of telescopic link insert in pedestal 1's the rectangular hole, and 2 second ends of telescopic link are equipped with platform 3, and platform 3 is flat thing, and platform 3's lower surface and 2 second ends fixed connection of telescopic link, and telescopic link 2 can slide from top to bottom along pedestal 1's rectangular hole to realize the effect of adjustment platform 3 height.
Be equipped with the screw hole on the side perpendicular with pedestal 1 rectangular hole spout, this screw hole is the through-hole, runs through to the medial surface in rectangular hole, and holding screw 5 and this screw hole screw-thread fit realize fixing telescopic link 2 on pedestal 1 through tightening holding screw 5 after adjusting 3 heights of platform to suitable position through the telescopic link 2 that slides from top to bottom.
4 organism fixed connection of motor is on platform 3, and motor 4 is equipped with the output shaft, this output shaft and the 6 first end fixed connection of joint pole, 6 second ends of joint pole and the 7 first end joint of joint, and this embodiment is flat key connection, and 6 second ends of joint pole are for being equipped with the cylinder of flat key promptly, and the 7 first ends of joint are the form of looks adaptation with it, are equipped with the hole of keyway promptly.
When the clamping device is used, the second end of the clamping rod 6 with the flat key is inserted into the first end of the clamping connector 7. And the second end of the clamping connector 7 is used for being connected with the input end of the manual operating mechanism of the isolating switch, so that the torque of the motor 4 is output to the manual operating mechanism of the isolating switch.
On the control circuit of the motor 4, the start, stop and rotation direction of the motor are controlled by a contactor group. More specifically, in the present embodiment, the motor 4 is an asynchronous motor, the relay set includes two contactors, a first end of a main circuit of the first contactor is electrically connected to an external ac power source, and the other end of the main circuit of the first contactor is electrically connected to three windings of the motor 4, when a coil of the first contactor is energized, the motor 4 rotates in a first direction; one end of the main loop of the second contactor is electrically connected with an external alternating current power supply, the other end of the main loop of the second contactor is electrically connected with three windings of the motor 4, and when the coil of the first contactor is electrified, the motor 4 rotates towards a second direction; when neither the first contactor coil nor the second contactor coil is energized, the motor 4 stops rotating.
The first contactor and the second contactor are different in connection mode of the motor 4, and the difference is that the connection end of the motor 4 is connected with the opposite phase sequence, so that the effect of different rotating directions of the motor 4 is realized.
As shown in the figure, KM1 is a first contactor, KM2 is a second contactor, K1 is a switch for controlling a coil of the first contactor, K2 is a switch for controlling a coil of the second contactor, and K3 is a switch for controlling a coil of the first contactor and a coil of the second contactor, when K3 and K1 are both closed, the coil of the first contactor is powered on, and the motor 4 rotates in a first direction; when both K3 and K2 are closed, the second contactor coil is energized and the motor 4 rotates in a second direction; when K3 is turned off, neither the first contactor coil nor the second contactor coil is energized, and the motor 4 stops rotating.
This mode adopts motor 4 as the power supply, and this power supply links to each other with isolator's manual operation mechanism input, uses manpower sparingly, makes the staff keep away from isolator, has ensured staff's safety. The device still is equipped with the base, and the base is equipped with telescopic link 2 that can adjust 4 heights of motor to adapt to different isolator and set up the position, make more handy when using, convenient adjustment. The device is also provided with a contactor group which is used for controlling the rotation direction of the motor 4, and the trouble that the rotation direction of the motor needs to be changed through wiring when the device is used every time is avoided.
Further, still include: the wireless communication device comprises a signal transmitting unit and a signal receiving unit, wherein the signal transmitting unit receives an external input signal and outputs a radio signal according to a preset condition; the signal receiving unit receives the radio signal from the signal transmitting unit, and controls the action of the contact group according to the preset condition to realize the control of the rotating direction of the motor 4; the signal transmitting unit is in communication connection with the signal receiving unit, and the contact group is electrically connected with the signal receiving unit.
Further, the signal receiving unit includes: the wireless receiving device comprises a first controller, a wireless receiving module and a relay set; the wireless receiving module converts the received radio signals into electric signals, the first controller receives the electric signals from the wireless receiving module, the first controller outputs control signals to the relay group according to preset conditions, and the relay group controls the action of the contact group; the wireless receiving module and the relay set are respectively electrically connected with the first controller, and the relay set is electrically connected with the contact set.
Further, the signal transmitting unit includes: the wireless transmission device comprises a key, a second controller and a wireless transmission module, wherein the second controller receives input of the key, controls the wireless transmission module to transmit a radio signal according to a preset condition, and is electrically connected with the second controller.
Further, the signal receiving unit further includes: and the indicator light is used for indicating the rotation direction of the motor 4 and is electrically connected with the first controller.
More specifically, the device is also provided with a signal transmitting unit and a signal receiving unit for remotely controlling the power control unit, wherein the signal transmitting unit comprises a first controller IC1, a key and a wireless transmitting module IC3, the first controller IC1 receives the operation of the key and controls the wireless transmitting module IC3 to send radio signals to the signal receiving unit.
In this embodiment, the wireless transmitting module IC3 is a 315MHZ wireless transmitting module, and the model of the first controller IC1 is: AT89C2051, which is a low voltage 8-bit CMOS microprocessor with a 2 kbyte flash programmable erasable programmable read only memory (EEPROM). It operates in the voltage range of 2.7-6V, is manufactured by ATMEL's high density nonvolatile memory technology and is compatible with industry standard MCS-51 instruction set and pin configuration.
AT89C2051 provides the following standard functions: the device comprises a 2K byte flash memory, a 128 byte RAM, 15 programmable I/O interfaces (including output ports for directly driving LEDs), two 16-bit timers, a five-vector two-stage interrupt structure, a full-duplex serial port, a precision analog comparator and two optional software power-saving working modes. The idle mode stops the CPU from working but allows the RAM, timer/counter, serial work port and interrupt system to continue working. The P1 port of the first chip IC1 is an 8-bit bidirectional I/O port, the ports P1.2-P1.7 provide internal pull-up resistors, and the output buffer of the P1 port can absorb 20mA current and can directly drive an LED to display. When the ports P1.2-P1.7 are used as inputs and are pulled low externally, they will output current due to internal pull-up resistors.
The P3.1 port of the first controller IC1 is electrically connected with the wireless transmit module IC 3. The ports P1.3, P1.5 and P1.7 of the first controller IC1 are electrically connected to the keys S1, S2 and S3, respectively, and when a key is pressed, the port electrically connected thereto is at low level and when the key is sprung up, the corresponding port is at high level.
The signal receiving unit comprises a second controller IC2, a relay group and a wireless receiving module IC4, the wireless receiving module IC4 receives radio signals transmitted by the wireless transmitting module IC3, the wireless receiving module IC4 converts the received radio signals into electric signals capable of being received by the second controller IC2, and the electric signals received by the second controller IC2 control the relay group, so that the technical effect of controlling the rotating direction of the motor 4 is achieved.
The wireless receiving module IC4 adopts a 315MHz wireless receiving module, the second controller IC2 adopts an AT89C2051 singlechip, the 315MHz wireless receiving module is provided with an output signal output end, and the signal output end of the 315MHz wireless receiving module is electrically connected with a P3.0 port of the second controller IC 2.
The relay group includes relay K1, relay K2 and relay K3, and relay K1 coil, relay K2 coil and relay K3 coil are connected with the P1.7 port of second controller IC2, P1.5 port and P1.3 port electricity respectively, when the second controller IC2 port that links to each other with the relay coil output low level, the relay coil is electrified, and the normally open contact of relay is closed, and the normally closed contact of relay breaks off.
In addition, the signal receiving unit also comprises an indicator light, the indicator light is connected with the relay coil in series, when the relay coil is electrified, the indicator light is turned on, and when the relay coil is not electrified, the indicator light is turned off.
The signal transmitting unit and the signal receiving unit of the device express different signal instructions by adjusting the interval time of transmitting signals.
In this embodiment, after the first controller IC1 of the signal transmitting unit receives the signal pressed by the key S1, the first controller IC3 controls the wireless transmitting module IC3 to output the radio signal for 10 ms, and then controls the wireless transmitting module IC3 to stop outputting the radio signal for 10 ms; after the first controller IC1 of the signal transmitting unit receives the signal pressed by the key S2, the first controller IC1 controls the wireless transmitting module IC3 to output the radio signal for 12 milliseconds first, and then controls the wireless transmitting module IC3 to stop outputting the radio signal for 8 milliseconds; after the first controller IC1 of the signal transmitting unit receives the signal of the pressed key S3, it controls the wireless transmitting module IC3 to output the radio signal for 14 ms first, and then controls the wireless transmitting module IC3 to stop outputting the radio signal for 6 ms.
The second controller IC2 of the signal receiving unit receives the radio signal through the wireless receiving module IC4, and calculates the time interval of receiving the radio signal and the time interval of not receiving the radio signal, as in this embodiment, the signal receiving unit calculates from the timer of the second controller IC2 that the time interval of receiving the radio signal is 10 ms, and does not receive the radio signal for 10 ms, so as to know that the S1 key of the signal transmitting unit is pressed at this time; the signal receiving unit calculates from the timer of the second controller IC2 that the time interval for receiving the radio signal is 12 milliseconds, and the time interval for receiving the radio signal is not 8 milliseconds, so that the signal transmitting unit is informed that the S2 key is pressed at this time; the signal receiving unit calculates from the timer of the second controller IC2 that the radio signal receiving time interval is 14 ms, and the radio signal is not received for 6 ms, so that the signal transmitting unit is informed that the S3 key is pressed at this time.
In operation, the closing process: after a worker presses an S1 key, a closing instruction is sent to a signal receiving unit by a signal transmitting unit, after the signal receiving unit receives a closing instruction, a control relay K1 is powered on and closed, a K1 relay normally-open node is closed, after 0.5 second, the K1 relay returns to a normal state, a closing contactor KM1 in a control loop is powered on and closed, a KM1 contactor is self-maintained through the self normally-open node, a motor 4 three-phase alternating current is switched on and starts closing, after the closing is in place, a remote control device S3 key is pressed, the K3 relay normally-closed node is disconnected, the isolating switch is closed, and after 0.5 second, the K3 relay returns to a normal state.
The brake opening process: after an operator presses an S2 key, a brake separating instruction is sent to a signal receiving unit by a signal transmitting unit, after the signal receiving unit receives a brake separating instruction, a relay K2 is controlled to be powered on and attracted, a K2 relay normally-open node is closed, a brake separating contactor KM2 in a control loop of a motor 4 is powered on and attracted, the KM2 contactor is self-maintained through the normally-open node, the three-phase alternating current of the motor 4 is switched on to start brake separation, an electric appliance K2 restores to a normal state after 0.5 second, the S2 key is pressed after the brake separation is in place, the K3 remotely controls the relay normally-closed node to be disconnected, the brake separating process of an isolating switch is finished, and the K3 relay restores to.
This device still is equipped with signal transmission unit and signal receiving unit, and signal transmission unit carries out communication connection with signal receiving unit through the radio, and the staff can hand signal transmission unit and send the instruction to signal receiving unit, and its moving range is great for the staff is guaranteed completely and keeps away from the electrical hazard source. The device can be operated remotely, and can be operated while observing the state of the isolating switch, and can be adjusted at any time according to the state. The signal receiving unit is also provided with an indicator light, so that whether the relay acts or not can be clearly observed.
Further, the motor 4 is an asynchronous motor, and the motor 4 is provided with a worm gear reducer 8.
Further, the seat body 1 is provided with at least three support legs 9, the support legs 9 are hinged with the seat body 1.
Furthermore, the first end of the clamping joint 7 is clamped with the second end of the clamping rod 6, and the second end of the clamping joint 7 is used for clamping the input end of the manual operating mechanism of the external isolating switch.
Further, joint 7 second end is equipped with first cuboid and the second cuboid that extends along joint 7 axis direction, and first cuboid setting is in the top of second cuboid, and first cuboid and second cuboid all are equipped with the screw hole that runs through upper and lower surface.
Furthermore, the supporting leg 9 is provided with a counterweight 10, and the counterweight 10 is arranged at one end close to the grounding of the supporting leg 9.
More specifically, in order to ensure that the locking effect is realized during switching-on or switching-off, the output end of the motor 4 is provided with the worm and gear speed reducer 8, and after the motor 4 stops rotating, the position of the output end of the motor 4 can be kept, so that the switching-on or switching-off cannot be changed due to external force, and the safety of equipment and workers is ensured. In addition, the worm gear speed reducer 8 also has the effects of increasing the action torque and slowing down the action speed, so that the design power of the motor 4 is further reduced, and the response time of a worker with problems in the action process is prolonged.
Pedestal 1 is equipped with landing leg 9 that can accomodate as further improvement, when needing to use, releases landing leg 9, forms stable ground structure, packs up landing leg 9 when finishing using, saves occupation of land space, is convenient for transport and deposits. The one end that is close to ground connection on the landing leg 9 is equipped with balancing weight 10, can adjust holistic focus, offsets the reverse moment of torsion that motor 4 produced at the rotation in-process for whole more firm.
The clamping head 7 matched with the clamping rod 6 is detachable, the clamping head 7 can be adapted to the input ends of the manual operating mechanisms of the disconnecting switches in multiple different modes, the clamping head is provided with two cuboid clamping jaws, threaded holes are formed in the clamping jaws, bolts matched with the threaded holes are installed on the threaded holes, the input ends of the manual operating mechanisms of the disconnecting switches are clamped by the jacking force of the bolts, and therefore the technical effect that the input ends of the manual operating mechanisms of the disconnecting switches are driven by the clamping rod 6 to rotate is achieved.
The embodiments described above are only preferred embodiments of the invention and are not exhaustive of the possible implementations of the invention. Any obvious modifications to the above would be obvious to those of ordinary skill in the art, but would not bring the invention so modified beyond the spirit and scope of the present invention.
Claims (10)
1. A fault switching device of an isolating switch is characterized by comprising: the power unit is arranged on the base, the contactor group receives an external control signal, and the contactor group controls the power unit to perform opening and closing actions on an external isolating switch;
the base includes: the device comprises a seat body (1), an expansion link (2) connected with the seat body (1) in a sliding manner, a platform (3) fixedly connected with the expansion link (2), and a set screw (5) in threaded connection with the seat body (1), wherein the set screw (5) is used for locking the expansion link (2) on the seat body (1); the power unit includes: the motor (4), the clamping rod (6) and the clamping joint (7) are fixedly connected with the platform (3), the first end of the clamping rod (6) is fixedly connected with the motor (4), and the second end of the clamping rod (6) is clamped with the clamping joint (7);
the contact set is electrically connected to the electric motor (4).
2. The device for disconnecting switch from fault and switching back according to claim 1, further comprising: the wireless communication device comprises a signal transmitting unit and a signal receiving unit, wherein the signal transmitting unit receives an external input signal and outputs a radio signal according to a preset condition; the signal receiving unit receives a radio signal from the signal transmitting unit, and controls the action of the contact group according to a preset condition to realize the control of the rotating direction of the motor (4); the signal transmitting unit is in communication connection with the signal receiving unit, and the contact group is electrically connected with the signal receiving unit.
3. The device of claim 2, wherein the signal receiving unit comprises: the wireless receiving device comprises a first controller, a wireless receiving module and a relay set; the wireless receiving module converts a received radio signal into an electric signal, the first controller receives the electric signal from the wireless receiving module, the first controller outputs a control signal to the relay group according to a preset condition, and the relay group controls the action of the contact group; the wireless receiving module and the relay set are respectively electrically connected with the first controller, and the relay set is electrically connected with the contact set.
4. The device of claim 3, wherein the signal transmitting unit comprises: the wireless transmission device comprises a key, a second controller and a wireless transmission module, wherein the second controller receives the input of the key, controls the wireless transmission module to transmit a radio signal according to a preset condition, and is respectively and electrically connected with the second controller.
5. The device of claim 4, wherein the signal receiving unit further comprises: an indicator light for indicating a direction of rotation of the motor (4), the indicator light being electrically connected with the first controller.
6. A disconnector malfunction switching device according to claim 5, characterized in that the electric motor (4) is an asynchronous motor, and the electric motor (4) is provided with a worm gear reducer (8).
7. A disconnector malfunction switching device according to claim 6, characterized in that said base body (1) is provided with legs (9), said legs (9) being hinged to said base body (1), said legs (9) being at least three.
8. A disconnector malfunction switching device according to claim 7, characterized in that the first end of the snap joint (7) is clamped with the second end of the clamping rod (6), and the second end of the snap joint (7) is used for clamping the input end of the external disconnector manual operation mechanism.
9. The disconnecting switch fault switching device according to claim 8, wherein a first cuboid and a second cuboid extending along the axial direction of the disconnecting switch (7) are arranged at the second end of the disconnecting switch (7), the first cuboid is arranged above the second cuboid, the first cuboid and the second cuboid are arranged at intervals, and threaded holes penetrating through the upper surface and the lower surface are formed in the first cuboid and the second cuboid.
10. A disconnector malfunction switching device according to claim 9, characterized in that said leg (9) is provided with a weight (10), said weight (10) being provided near the end of said leg (9) which is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010554771.0A CN111952085A (en) | 2020-06-17 | 2020-06-17 | Fault switching device of isolating switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010554771.0A CN111952085A (en) | 2020-06-17 | 2020-06-17 | Fault switching device of isolating switch |
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| CN111952085A true CN111952085A (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010554771.0A Pending CN111952085A (en) | 2020-06-17 | 2020-06-17 | Fault switching device of isolating switch |
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