CN203850193U - Remote control type automatic opening and closing knife gate - Google Patents

Abstract

A remote control type automatic opening and closing knife switch, characterized in that: a three-phase integrated knife switch (2) is provided with a push-pull rod (6), and one end of the push-pull rod (6) is fixed on the three-phase On the knife switch (8) of the integrated knife switch (2), the other end of the push-pull rod (6) is connected to one end of the link (10) by the second pin shaft (9), and the middle sleeve of the link (10) On the rotating rod (11), the rotating rod (11) is mounted on the base (12) of the three-phase integrated knife switch (2), and the other end of the connecting rod (10) is connected with the third pin shaft (13) for operation One end of the pull rod (14), the other end of the operation pull rod (14) is set on the cam (16) on the motor (3) shaft by the fourth pin shaft (15), and the remote control (5) is used to operate the motor (3) Forward rotation or reverse rotation, and the upstroke switch (17) and downstroke switch (18) control the rotation and stop of the motor (3), and control the opening or closing of the three-phase integrated knife switch (2).

Description

Remote control automatic opening and closing knife switch

technical field

The utility model belongs to the technical field of isolating switches in electric power engineering, in particular to a remote-controlled automatic opening and closing knife switch.

Background technique

At present, on the transmission line with a voltage level of 10KV and above, the split type manual pull-close type isolating switch is used to break the power outage line, so as to achieve the purpose of finding faults in the line and performing maintenance in sections. This type of isolating switch has a simple structure. The investment is low, but there are defects such as difficult maintenance, difficult pulling, and difficult operation. Because it is in a closed state for a long time, it is exposed to the air for a long time, and it is exposed to wind and rain, and it is easy to rust. Once it is corroded, it will be difficult to pull and break the line. In addition, the distance between the transmission line and the ground is very long. The length of the insulating rod, and the physical fitness and operating proficiency of the operator also have certain risks. Once the operator is not in good condition, the length of the insulating rod is barely enough, and the line to be operated is in a crossover situation, it is easy to Cause safety accidents and misoperations caused by manual operation. Therefore, it is very necessary to invent a non-manually operated automatic breaking and isolating knife switch device; to improve operating accuracy and safety factor.

Contents of the invention

The purpose of this utility model is to overcome the above-mentioned disadvantages, to provide a remote control type automatic opening and closing knife switch. A power supply circuit composed of an air switch, an intermediate relay, a charger, a storage battery, an inverter and a timing switch, an operating case, a three-phase integrated knife switch, a motor, a remote control switch and a remote control, are characterized in that: the three-phase The integrated knife switch is provided with a push-pull rod, one end of the push-pull rod is fixed on the knife switch of the three-phase integrated knife switch by the first pin shaft, and the other end of the push-pull rod is connected to one end of the link by the second pin shaft. The middle of the rod is set on the rotating rod, and the rotating rod is installed on the base of the three-phase integrated knife switch. The other end of the connecting rod is connected to one end of the operating rod by the third pin, and the other end of the operating rod is connected by the fourth pin. It is set on the cam on the motor shaft, and one side of the cam is respectively equipped with an up travel switch and a down travel switch. Use the remote control to control the remote control switch to operate the forward or reverse rotation of the motor. The opening or closing of the phase-integrated knife switch is controlled by the upper travel switch and the lower travel switch to control the rotation and stop of the motor.

The power supply circuit of the present utility model is: take two items in the three-phase circuit as the primary power supply of the voltage transformer, and the secondary power supply charges the charger through the normally open contact of the air switch and the intermediate relay, and the charger uses 220V AC The rectified output is 12V DC to the battery, and the 12V battery supplies power to the remote switch, and at the same time, the inverter converts the 12V DC into 220V AC to power the motor.

The operation control circuit of the utility model is: the 220V alternating current that the inverter outputs supplies power to the motor. When the remote control switch is used to close the remote switch switch 1, the uplink relay is energized, the normally open contact is closed, and the motor starts to rotate forward. When the motor is turning forward and opening the brake, the normally closed contact is opened, which will prevent the reverse control circuit from connecting to the action. In the same way, when the remote control is used to close the remote switch switch 2, the down relay is energized, its normally open contact is closed, the contact of the motor reverse control switch is closed, and when the motor starts to reverse and reaches the predetermined position, the down travel switch acts Breaking off, the motor reverses and stops, and the knife switch is in place.

The utility model can operate the breaking knife switch by remote control when the line is powered off, avoiding unnecessary casualties caused by manual operation; it has the function of live locking protection, and can forcibly prohibit the remote control breaking knife when the line is electrified. The behavior of the switch, that is, when the line is electrified, the remote control breaking operation of the knife switch cannot be realized.

Description of drawings

Fig. 1 is the front view of the structural representation of the utility model;

Fig. 2 is a schematic diagram of the opening structure of the utility model knife switch;

Fig. 3 is a schematic diagram of the closing structure of the utility model knife gate;

Fig. 4 is a power supply circuit diagram in the utility model;

Fig. 5 is an operation control circuit diagram in the utility model.

In the figure, 1. Operation chassis, 2. Three-phase integrated knife switch, 3. Motor, 4. Remote control switch, 5. Remote control, 6. Push-pull rod, 7. First pin shaft, 8. Knife switch, 9. The second pin, 10, link, 11, rotating rod, 12, base, 13, the third pin, 14, operation pull rod, 15, the fourth pin, 16, cam, 17, down travel switch, relay, 18. Upstroke switch, 19. Voltage transformer, 20. Air switch, 21. First intermediate relay, 22. Charger, 23. Storage battery, 24. Inverter, 25. Timing switch, 26. Second relay, 27. The third relay.

Detailed ways

With reference to accompanying drawing, a kind of remote control type automatic opening and closing knife switch comprises the power supply circuit that is made up of voltage transformer 19, air switch 20, intermediate relay 21, charger 22, storage battery 23, inverter 24 and timing switch 25, Operation case 1, three-phase integrated knife switch 2, motor 3, remote control switch 4 and remote controller 5 are characterized in that: the three-phase integrated knife switch 2 is provided with a push-pull rod 6, and one end of the push-pull rod 6 is used The first pin 7 is fixed on the knife switch 8 of the three-phase integrated knife switch 2, the other end of the push-pull rod 6 is connected to one end of the link 10 by the second pin 9, and the middle of the link 10 is set on the rotating bar 11 Above, the rotating rod 11 is mounted on the base 12 of the three-phase integrated knife switch 2, the other end of the connecting rod 10 is connected to one end of the operating pull rod 14 with the third pin shaft 13, and the other end of the operating pull rod 14 is connected with the fourth pin shaft 15 is set on the cam 16 on the motor 3 shaft, and one side of the cam 16 is respectively provided with an upstroke switch 17 and a downstroke switch 18, and the remote control switch 4 is remotely controlled by the remote controller 5 to operate the forward or reverse rotation of the motor 3. Pull rod 14, connecting rod 10 and push-pull rod 6 control the opening or closing of the three-phase integrated knife switch 2, and the upstroke switch 17 and downstroke switch 18 control the turning and stopping of the motor 3.

The power supply circuit of the present utility model is: with reference to accompanying drawing 4, two items in the ABC three-phase line are arbitrarily taken as the primary measuring power supply of the voltage transformer 19, and the secondary side output of the transformer 19 passes through the air switch 20 and the first intermediate relay The normally open contact KM1-1 of 21 charges the charger 22, and the charger 22 rectifies the 220V AC power and outputs it as 12V DC power to the battery 23, and the battery 23 supplies power to the remote control switch 4, and at the same time, the 12V DC power is inverted through the inverter 24 It supplies power to the secondary control circuit for 220V alternating current. When the air switch 20 is closed, the normally open contact KM1-1 of the first intermediate relay 21 is closed, and the charger 22 is connected to charge the battery 23 at regular intervals through the timing switch 25 (the timing switch is automatically disconnected after reaching the set time, and then automatically closed after the set time), the DC 12V voltage in the battery 23 is converted into AC 220V voltage through the inverter 24 to supply power to the motor 3 through the normally closed contact KM1-2 of the first intermediate relay 21, wherein, when the line is charged At this time, because the coil of the first intermediate relay 21 is energized, its normally closed contact is disconnected. Therefore, the secondary circuit cannot be remotely operated due to power interruption, thereby realizing the function of circuit liveness preventing false disconnection knife switch operation.

The operation control circuit of the present utility model is: with reference to accompanying drawing 5, L, N power supply access point, when utilizing remote controller 5 remote control switch 4 closing switch 1 position, the coil of the second relay 26 is energized, normally open contact KM2-1 is closed, the coil is connected to self-locking, the motor rotates forward to control the normally open switch KM2-1 is closed, and the motor 3 starts to rotate forward, when the motor rotates forward (the connecting rod drives the three-phase integrated knife switch to open) and reaches the predetermined position , the upstroke switch 18 is turned off, the motor rotates forward and stops, and the knife switch is in place; when the motor 3 rotates forward and opens, the normally closed contact KM2-1 of the coil KM2 is opened, which will prevent the reverse control circuit from connecting to the action . Similarly, when using the remote control 5 to remotely control the remote control switch 4 to close the switch 2, the coil of the third relay 27 is energized, its normally open contact KM3-1 is pulled in, and the self-locking circuit is connected, and the motor reverse control switch touches When point KM3-1 is closed, the motor starts to reverse (that is, the connecting rod drives the three-phase integrated knife switch to close) and reaches the predetermined position, the downstroke switch 17 is turned off, the motor reverses and stops, and the knife switch is closed in place.

Above-mentioned voltage transformer 19, air switch 20, intermediate relay 21, charger 22, storage battery 23, inverter 24, timing switch 25, second relay 26 and the 3rd relay 27 are all arranged in the operating cabinet 1, facilitate Install control.

Claims (1)

1. automatic deciliter disconnecting link of a distance type, comprise by voltage transformer (19), air switch (20), between relay (21), charger (22), storage battery (23), the power-supply circuit that inverter (24) and timing switch (25) form, operation cabinet (1), Integral three-phase disconnecting link (2), motor (3), remote control switch (4) and remote controller (5), it is characterized in that: described Integral three-phase disconnecting link (2) is provided with pull bar (6), one end of pull bar (6) utilizes the first bearing pin (7) to be fixed on the disconnecting link (8) of Integral three-phase disconnecting link (2), the other end of pull bar (6) utilizes the second bearing pin (9) to be connected with one end of link rod (10), the intermediate sleeve of link rod (10) is contained on bull stick (11), bull stick (11) is installed on the base (12) of Integral three-phase disconnecting link (2), the other end of link rod (10) utilizes one end of the 3rd bearing pin (13) attended operation pull bar (14), the other end of operation pull bar (14) utilizes the 4th bearing pin (15) to be arranged on the cam (16) on motor (3) axle, one side of cam (16) arranges respectively upper stroke switch (17) and lower stroke switch (18), utilize remote controller (5) telecontrol switch (4), the forward or reverse of operating electrical machines (3), by operation pull bar (14), link rod (10) and pull bar (6) are controlled separating brake or the combined floodgate of Integral three-phase disconnecting link (2), by upper stroke switch (17) and lower stroke switch (18), controlling turning of motor (3) stops.