CN220775675U - Circuit control device with electricity interference prevention function - Google Patents
Circuit control device with electricity interference prevention function Download PDFInfo
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- CN220775675U CN220775675U CN202322246543.9U CN202322246543U CN220775675U CN 220775675 U CN220775675 U CN 220775675U CN 202322246543 U CN202322246543 U CN 202322246543U CN 220775675 U CN220775675 U CN 220775675U
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- motor
- current contactor
- over switch
- change
- relay
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- 230000005611 electricity Effects 0.000 title description 3
- 230000002265 prevention Effects 0.000 title description 2
- 230000003111 delayed effect Effects 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a line control device with an anti-interference function, which comprises a primary circuit of a motor and a control circuit, wherein the control circuit comprises a power control circuit and an operation indication circuit, the power control circuit comprises a fuse FU, a change-over switch SA, a closing button SB1, a time relay KT, an alternating-current contactor KM and a thermal relay FR, the time relay KT and the alternating-current contactor KM are used for controlling the on-off of the power supply of the motor in a delayed manner, one end of the change-over switch SA is connected with one end of the closing button SB1, the other end of the closing button SB1 is connected with one end of the coil of the alternating-current contactor KM, the other end of the closing button SB1 is connected with one end of the coil of the time relay KT, the line control is improved under the control of a basic conventional circuit, and the short-term voltage sag of equipment can not stop operation within a time range which does not influence the safety of the equipment, and the operation stability of the equipment is improved.
Description
Technical Field
The utility model relates to the technical field of motor control, in particular to a circuit control device with an anti-interference function.
Background
In an industrial power supply system, the power supply system can cause the short time of the power grid voltage (the phenomenon of 1 outage or voltage sag, also called as the phenomenon of electric dazzle) due to lightning stroke and short circuit, the electric dazzle refers to the phenomenon that the instantaneous drop time of the power grid voltage is within 1.5 seconds and returns to normal, and the motor self-starting aims at the instantaneous voltage loss of the power grid more than 1.5 seconds, so that an auxiliary hold controller for preventing the electric dazzle of the motor is used for the electric dazzle of less than 1.5 seconds and is commonly used in a control circuit of a motor contactor, and a self-starting superposition controller for the motor is used for the instantaneous voltage loss of more than 1.5 seconds and is only used for controlling an important load motor.
The Chinese patent publication No. CN210807130U, the authorized notice day is the year 2020 month 19, an anti-interference electricity motor control loop comprises a local/remote change-over switch, a local motor control loop and a remote motor control loop, wherein the local motor control loop and the remote motor control loop are switched through the local/remote change-over switch, the remote motor control loop comprises a relay and a DCS motor control unit, the DCS motor control unit comprises a falling edge trigger, a timer, an OR gate and a motor control module, the motor control module is provided with a motor running signal input end and a motor start-stop signal output end, one path of a motor running signal is connected with one input end of the OR gate, the other path of the motor running signal is connected with the other input end of the OR gate in series after the falling edge trigger and the timer, and the output end of the OR gate is connected with the control signal input end of the relay through an electric wire.
In the existing industrial production, after the electricity-shaking phenomenon occurs in a plurality of power equipment, the equipment is required to be restarted after the equipment is stopped, the interruption phenomenon is caused for production, the irreversible influence is caused, the industrial production efficiency is reduced, and the use requirement cannot be met.
Disclosure of Invention
The utility model aims to provide a line control device with an anti-interference function, which solves the problems that in the prior art, after the interference phenomenon occurs in a plurality of power devices, the power devices are stopped and need to be restarted, the production is interrupted, the irreversible influence is caused, the industrial production efficiency is reduced, and the use requirement cannot be met.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a circuit control device with prevent electric interference function, includes motor primary circuit and control circuit, control circuit includes power control circuit and operation instruction circuit, power control circuit includes fuse FU, change over switch SA, closing button SB1, time relay KT, AC contactor KM and thermal relay FR, time relay KT and AC contactor KM are used for time delay control motor power's break-make, the one end of change over switch SA is connected with the one end of fuse FU, the one end of change over switch SA is connected with the one end of closing button SB1, the other end of closing button SB1 is connected with the one end of AC contactor KM coil, and the other end of AC contactor KM is connected with the one end of time relay KT coil through time relay KT normally open contact, the other end of AC contactor KM and time relay KT all is connected with the one end of thermal relay FR, and AC contactor KM and the parallel arrangement of time relay KT, the other end of fuse FU is connected with the other end of positive and the relay KM, the negative pole of FR is connected with the bus.
Preferably, the change-over switch SA is an ADA change-over switch, the shutdown of the change-over switch SA is at 0 DEG, and the ready-to-start of the change-over switch SA is at 90 deg.
Preferably, the operation indication circuit comprises a signal indication lamp HL2 and a signal indication lamp HL1, which are respectively used for indicating the operation state of the motor and the operation state of the switch cabinet, and one end of the signal indication lamp HL2 is connected with one end of the change-over switch SA through a normally open contact KM1 of the intermediate relay KM.
Preferably, the primary circuit of the motor comprises a breaker QF, an alternating current contactor KM, a thermal relay KH, a ground wire PE and a motor M which are sequentially connected with an alternating current power supply, wherein the input end of the breaker QF is respectively connected with power lines L1, L2 and L3, the output end of the breaker QF is respectively connected with a normally open contact of the alternating current contactor KM, and the wiring end of the thermal relay KH is respectively connected with a normally open contact of the alternating current contactor KM and a wiring end of the motor M.
Compared with the prior art, the utility model has the beneficial effects that:
1. the device controls the operation of the motor through the power supply control circuit, the time relay contacts in the power supply control circuit are instantly closed and are opened in a delayed manner, the delay time can be adjusted according to the condition of equipment, and is generally within 1 second, when the short circuit or the short-time power-off of the time relay occurs in a circuit system, the contactor can be turned on again due to the delayed opening function of the time relay, so that the equipment is powered on again, equipment shutdown caused by power-off can be avoided, and the stable operation of the equipment is ensured;
2. the device stops taking the change-over switch, can avoid shaking caused by taking a button for stopping when stopping, and can avoid probability of misoperation when starting up for secondary confirmation of equipment.
Drawings
FIG. 1 is a schematic diagram of a primary circuit of a motor of the present utility model;
fig. 2 is a schematic diagram of a control circuit according to the present utility model.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-2, an embodiment of the present utility model is provided: the utility model provides a circuit control device with prevent electric interference function, including motor primary circuit and control circuit, control circuit includes power control circuit and operation instruction circuit, power control circuit includes fuse FU, change over switch SA, switch-on button SB1, time relay KT, alternating current contactor KM and thermal relay FR, time relay KT and alternating current contactor KM are used for time delay control motor power's break-make, change over switch SA's one end is connected with fuse FU's one end, change over switch SA's one end is connected with switch-on button SB 1's one end, switch-on button SB 1's the other end is connected with alternating current contactor KM coil's one end, and alternating current contactor KM's the other end is connected with time relay KT coil's one end through time relay KT normally open contact, alternating current contactor KM and time relay KT's the other end all is connected with thermal relay FR's one end, and alternating current contactor KM and time relay KT parallel setting, fuse FU's other end connection current bus positive pole +KM, direct current bus bar-negative pole relay FR's the other end is connected.
When in use, the utility model is characterized in that: when the motor is started, the change-over switch SA is switched from a stop state to a ready-to-start state, the closing button SB1 is pressed, the coil of the time relay KT is electrified, the time relay KT is electrified by adopting an instantaneous closing delay open type contact, a self-locking circuit is closed, the alternating current contactor KM is electrified, and the motor is electrified to run; when the motor is stopped, after the change-over switch SA is converted from a starting state to a stopping state, the coil of the time relay KT is powered off, the coil of the alternating current contactor KM is powered off, the alternating current contactor KM is disconnected, and the motor is powered off and stops running.
Referring to fig. 2, the switch SA is an ADA switch, the switch SA is at 0 ° when the switch SA is stopped, and the switch SA is at 90 ° when the switch SA is ready to be started.
Referring to fig. 2, the operation indication circuit includes a signal indicator lamp HL2 and a signal indicator lamp HL1, which are respectively used for indicating the operation state of the motor and the operation state of the switch cabinet, wherein one end of the signal indicator lamp HL2 is connected with one end of the change-over switch SA through the normally open contact KM1 of the intermediate relay KM, the operation state of the motor can be directly displayed through the signal indicator lamp HL2, the operation state of the switch cabinet can be directly displayed through the signal indicator lamp HL1, and the monitoring of the line control device by staff is facilitated.
Referring to fig. 1, the primary circuit of the motor includes a breaker QF, an ac contactor KM, a thermal relay KH, a ground line PE and a motor M sequentially connected to an ac power source, wherein an input end of the breaker QF is connected to power lines L1, L2 and L3, an output end of the breaker QF is connected to a normally open contact of the ac contactor KM, and a terminal of the thermal relay KH is connected to a normally open contact of the ac contactor KM and a terminal of the motor M.
Working principle: when the motor is started, the change-over switch SA is switched from a stop state to a ready-to-start state, the closing button SB1 is pressed, the coil of the time relay KT is electrified, the time relay KT is electrified by adopting an instantaneous closing delay open type contact, a self-locking circuit is closed, the alternating current contactor KM is electrified, and the motor is electrified to run; when the motor is stopped, after the change-over switch SA is changed from a starting state to a stopping state, the coil of the time relay KT is powered off, the coil of the alternating current contactor KM is powered off, the alternating current contactor KM is disconnected, and the motor is powered off and stops running; when the motor runs, the signal indicator lamp HL2 and the signal indicator lamp HL1 are correspondingly lightened, and the line control device is conveniently monitored according to the states of the signal indicator lamp HL2 and the signal indicator lamp HL 1.
What is not described in detail in this specification is prior art known to those skilled in the art.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a circuit control device with prevent electric interference function, includes motor primary circuit and control circuit, its characterized in that, control circuit includes power control circuit and operation indicating circuit, power control circuit includes fuse FU, change over switch SA, switch-on button SB1, time relay KT, alternating current contactor KM and thermal relay FR, time relay KT and alternating current contactor KM are used for time delay control motor power's break-make, the one end of change over switch SA is connected with the one end of fuse FU, the one end of change over switch SA is connected with the one end of switch-on button SB1, the other end of switch-on button SB1 is connected with the one end of alternating current contactor KM coil, and the other end of alternating current contactor KM is connected with the one end of time relay KT coil through time relay KT normally open contact, the other end of alternating current contactor KM and time relay KT all is connected with the one end of thermal relay KM FR, and alternating current contactor KM and the parallel setting of time relay KT, the other end of fuse FU is connected with the positive pole +bus bar, the negative pole is connected with the bus bar.
2. The line control device with an anti-glare function according to claim 1, wherein: the change-over switch SA selects ADA change-over switch, change-over switch SA stops to be in 0, and change-over switch SA prepares to start to be in 90.
3. The line control device with an anti-glare function according to claim 1, wherein: the operation indicating circuit comprises a signal indicating lamp HL2 and a signal indicating lamp HL1, the signal indicating lamp HL2 and the signal indicating lamp HL1 are respectively used for indicating the operation state of the motor and the operation state of the switch cabinet, and one end of the signal indicating lamp HL2 is connected with one end of the change-over switch SA through the normally open contact KM1 of the intermediate relay KM.
4. The line control device with an anti-glare function according to claim 1, wherein: the primary circuit of the motor comprises a breaker QF, an alternating-current contactor KM, a thermal relay KH, a ground wire PE and a motor M which are sequentially connected with an alternating-current power supply, wherein the input end of the breaker QF is respectively connected with power lines L1, L2 and L3, the output end of the breaker QF is respectively connected with a normally open contact of the alternating-current contactor KM, and the wiring end of the thermal relay KH is respectively connected with a normally open contact of the alternating-current contactor KM and a wiring end of the motor M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322246543.9U CN220775675U (en) | 2023-08-21 | 2023-08-21 | Circuit control device with electricity interference prevention function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322246543.9U CN220775675U (en) | 2023-08-21 | 2023-08-21 | Circuit control device with electricity interference prevention function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220775675U true CN220775675U (en) | 2024-04-12 |
Family
ID=90600124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322246543.9U Active CN220775675U (en) | 2023-08-21 | 2023-08-21 | Circuit control device with electricity interference prevention function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220775675U (en) |
-
2023
- 2023-08-21 CN CN202322246543.9U patent/CN220775675U/en active Active
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