CN220492695U - Anti-interference electricity device - Google Patents

Abstract

An anti-interference device is used for keeping continuous operation of electrical equipment when interference electricity occurs to an electrical circuit. The power signal feedback circuit is used for connecting whether a power signal of the power starter exists or not to a coil loop of the power-on delay time relay, the power-on delay time relay and the power-off delay time relay are connected to the power starter through the anti-interference logic circuit, and the power starter is connected with the motor; the power-on delay time relay and the power-off delay time relay realize the anti-interference function of the equipment through logic cooperation. The utility model can keep the continuous operation of important equipment when the interference electricity occurs on the premise of not changing the wiring mode of the original equipment; when two time relays self break down, its maintenance does not influence the normal use of equipment yet, and when normal shut down state, two time relays are uncharged, can effectively prolong its life, can reduce the waste of production data because of taking place to shake the electricity and bring, guarantees operating personnel's personal safety.

Description

Anti-interference electricity device

Technical Field

The utility model relates to the technical field of production and manufacturing of viscose filaments, in particular to an anti-interference device for enabling electrical equipment to continuously run when electric wires are suddenly interference.

Background

In the production procedures of spinning, stock solution and the like of viscose filament yarns, when the electric circuit has the phenomenon of electricity interference, equipment is stopped accidentally and the like, on one hand, the production and the operation are greatly influenced, and a large amount of production resources are wasted; on the other hand, toxic and harmful gases generated in the production process can not be removed due to unexpected shutdown of the exhaust fan, so that the personal safety of personnel on the production site is endangered. Therefore, it is becoming more and more important to study an anti-interference device that can ensure continuous operation of important equipment.

Disclosure of Invention

In order to achieve the above object, the present utility model provides an anti-interference device for maintaining continuous operation of important equipment when an electric line is suddenly subjected to interference phenomenon.

In order to achieve the purpose, the anti-interference device comprises a power signal feedback circuit, an electrifying delay time relay, an anti-interference logic circuit and an outage delay time relay; the power signal feedback circuit is used for connecting the power signal of the power starter to the coil loop of the power-on delay time relay, and the power-on delay time relay and the power-off delay time relay are connected to the power starter through the anti-interference logic circuit, and the power starter is connected with the motor.

Further, the power-on delay time relay and the power-off delay time relay realize the anti-interference function of the equipment through logic cooperation.

Further, an L1, L2 and L3 three-phase alternating current power supply of the power starter is connected with a motor through a QF automatic air switch, a main contact of a KM alternating current contactor and a main contact of an FR thermal overload relay in sequence; an FU fuse connected with an L1, L2 and L3 three-phase alternating current power supply is connected to a coil of a KT2 power-on delay time relay of the anti-interference device through a contact KT12 of the KT1 power-off delay time relay; the FU fuse is connected with a normally closed auxiliary contact of the FR thermal overload relay through a SB1 button switch, a SB2 button switch and a coil of the KM alternating-current contactor to form a control loop of the power supply starter; the auxiliary contact of the KM alternating-current contactor, the contact KT11 of the KT1 power-off delay time relay of the anti-interference device and the contact KT21 of the KT2 power-on delay time relay are connected into an SB2 button switch; the coil of the KT1 outage delay time relay is connected to the coil of the KM alternating-current contactor.

The power-on delay time relay acquires the state of the power starter, so that the anti-interference device is immediately cut off after being put into operation in a short time during starting, and the selective put into and cut off of the anti-interference device are ensured; the power-off delay time relay can keep the conduction of the power starter circuit when the power-on is in interference, and the two time relays realize continuous operation of the equipment through the cooperation of the anti-interference logic circuit and the power starter.

Compared with the prior art, the utility model can keep the continuous operation of important equipment when the electric line suddenly shakes off under the premise of not changing the original equipment wiring mode; when two time relays fail, the maintenance of the time relays does not affect the normal use of the equipment, and when the time relays are in a normal stop state, the two time relays are not electrified, so that the service life of the time relays can be effectively prolonged. The utility model has scientific design, simple structure and low input cost, can reduce the waste of production data caused by the occurrence of electricity interference and ensures the personal safety of operators.

Drawings

Fig. 1 is a block diagram of an electrical connection of the present utility model.

Fig. 2 is a circuit diagram of the present utility model.

In the figure: 1. a power source starter; 2. a motor; 3. a power signal feedback line; 4. a power-on delay time relay; 5. an anti-interference logic circuit; 6. a power-off delay time relay; 7. and an anti-interference device.

Detailed Description

As shown in fig. 1, the anti-interference device 7 of the present utility model mainly comprises a power signal feedback line 3, an energizing delay time relay 4, an anti-interference logic line 5, a de-energizing delay time relay 6, etc. The motor 2 is connected with the power starter 1, the power signal feedback circuit 3 connects the power signal of the power starter 1 to the coil loop of the power-on delay time relay 4, and the power-on delay time relay 4 and the power-off delay time relay 6 are connected to the power starter 1 through the anti-interference logic circuit 5. The power-on delay time relay 4 and the power-off delay time relay 6 realize the anti-interference function of the equipment through logic cooperation.

As shown in fig. 2, the three-phase ac power supply of L1, L2 and L3 of the power starter 1 is connected with the motor 2 through the QF automatic air switch, the main contact of the KM ac contactor and the main contact of the FR thermal overload relay in sequence; the FU fuse connected with the L1, L2 and L3 three-phase alternating current power supply is connected to the coil of the KT2 power-on delay time relay 4 of the anti-interference device 7 through the contact KT12 of the KT1 power-off delay time relay 6; the FU fuse is connected with a normally closed auxiliary contact of the FR thermal overload relay through SB1 and SB2 button switches and a coil of the KM alternating-current contactor to form a control loop of the power supply starter 1; the auxiliary contact of the KM alternating-current contactor, the contact KT11 of the KT1 power-off delay time relay 6 of the anti-interference device 7 and the contact KT21 of the KT2 power-on delay time relay 4 are connected into an SB2 button switch; the coil of the KT1 outage delay time relay 6 is connected to the coil of the KM alternating-current contactor.

During normal operation, a SB2 button switch is pressed down, at this moment, the loop of the FU fuse, the SB1 button switch, the SB2 button switch, the coil of the KM alternating-current contactor and the FR auxiliary normally closed contact are electrified, the auxiliary contact of the KM alternating-current contactor is immediately closed, circuit self-locking is realized, even if the SB2 button switch is released, the circuit is still an access, at this moment, the main contact of the KM alternating-current contactor is switched on, the L1, L2 and L3 three-phase alternating-current power supply sequentially supplies power to the motor 2 through the QF automatic air switch, the main contact of the KM alternating-current contactor and the main contact of the FR thermal overload relay, meanwhile, the coil of the KT1 outage delay time relay 6 connected with the coil of the KM alternating-current contactor is electrified, the auxiliary contacts KT11 and KT12 of the KT1 outage delay time relay 6 are immediately closed, at this moment, the coil of the KT2 outage delay time relay 4 connected with the auxiliary contact KT12 of the KT1 outage delay time relay 6 is electrified, at this moment, the auxiliary contact KT2 outage delay time relay 21 of the KT2 is still in a closed state, the KT1 outage delay time relay is in the short-time 7, and the auxiliary contact 7 is in the outage time delay device is electrified; when the timing of the KT2 power-on delay time relay 4 arrives, the auxiliary contact KT21 is disconnected, the auxiliary contact KT11 of the KT1 power-off delay time relay 6 and the auxiliary contact KT21 line of the KT2 power-on delay time relay 4 are in a disconnected state, at the moment, the anti-interference electricity device 7 is cut off from a circuit in normal operation, and the motor 2 operates in the normal state.

When the lines L1, L2 and L3 are in interference electricity, the coil of the KT2 electrifying delay time relay 4 is immediately deenergized, and the auxiliary contacts KT21 are electrified, delayed, disconnected and immediately closed contacts, so after the coil of the KT2 electrifying delay time relay 4 is deenergized, the contact KT21 is immediately changed into an initial closed state, meanwhile, the KT1 outage delay time relay 6 starts to count time, the auxiliary contacts KT11 and KT12 are still in the closed state before the timing is not completed, at the moment, the lines of the contact KT11 and the KT21 are in the on state, and the interference electricity prevention device 7 is immediately put into use, at the moment, the L1, L2 and L3 three-phase alternating-current power supply sequentially passes through the FU fuse, the SB1 button switch, the auxiliary contacts KT21 and KT1 of the KT2 electrifying delay time relay 4, the coil of the KM alternating-current contactor and the auxiliary contacts KM 11 of the FR heat relay 6 reach the power supply N, and form another closed control loop, and the coil control loop of the alternating-current contactor is ensured to be always in the on state; when the mains supply is recovered before the timing of the KT1 outage delay time relay 6 is not finished, as the coil control loop of the KM alternating-current contactor is powered by the circuit of the FU fuse, the auxiliary contact KT21 of the KT2 outage delay time relay 4, the auxiliary contact KT11 of the KT1 outage delay time relay 6 and the SB1 button switch, the circuit is always in a connection state, so that the motor 2 can continuously run, and uninterrupted operation of important equipment when power shaking occurs is realized.

Claims (3)

1. An anti-interference device, which is characterized in that: the anti-interference device (7) consists of a power signal feedback circuit (3), an electrifying delay time relay (4), an anti-interference logic circuit (5) and an outage delay time relay (6); the power signal feedback circuit (3) is used for connecting a power signal of the power starter (1) to a coil loop of the power-on delay time relay (4), the power-on delay time relay (4) and the power-off delay time relay (6) are connected to the power starter (1) through the anti-interference electric logic circuit (5), and the power starter (1) is connected with the motor (2).

2. An anti-glare device according to claim 1, characterized in that: the power-on delay time relay (4) and the power-off delay time relay (6) realize the anti-interference function of the equipment through logic cooperation.

3. An anti-glare device according to claim 1, characterized in that: the L1, L2 and L3 three-phase alternating current power supplies of the power starter (1) are connected with the motor (2) through a QF automatic air switch, a main contact of a KM alternating current contactor and a main contact of an FR thermal overload relay in sequence; an FU fuse connected with an L1, L2 and L3 three-phase alternating current power supply is connected to a coil of a KT2 electrifying delay time relay (4) of the anti-interference device (7) through a contact KT12 of a KT1 outage delay time relay 6; the FU fuse is connected with a normally closed auxiliary contact of the FR thermal overload relay through a SB1 button switch, a SB2 button switch and a coil of the KM alternating-current contactor to form a control loop of the power supply starter (1); the auxiliary contact of the KM alternating-current contactor, the contact KT11 of the KT1 power-off delay time relay (6) of the anti-interference device (7) and the contact KT21 of the KT2 power-on delay time relay (4) are connected into an SB2 button switch; the coil of the KT1 outage delay time relay (6) is connected with the coil of the KM alternating-current contactor.