A dual mode control circuit for power station motorized blinds

Abstract

The utility model discloses a power station electric louver double mode control circuit, include: first power switch device is used for the positive rotation loop of positive and negative rotation motor and the on and off of power supply, second power switch device is used for the reverse rotation loop of positive and negative rotation motor and the on and off of power supply, first remote control switch is used for receiving remote start signal, and with the control device connection of first power switch device, controls the start and off of first power switch device, second remote control switch is used for receiving remote close signal, and with the control device connection of second power switch device, controls the start and off of second power switch device, first limit switch and second limit switch are used for respectively sensing the stop position of louver opening and closing, and disconnect the positive rotation loop and reverse rotation loop when louver reaches the stop position. The utility model has realized the local control and remote control of power station louver, and the unattended control in the shelter power station is convenient.

Description

Technical Field

[0001] This utility model relates to the field of power plant louver operation control, specifically to a dual-mode control circuit for a power plant electric louver. Background Technology

[0002] When the diesel generator set inside the modular power station is running, the louvers need to be opened to meet the power station's air intake and exhaust needs. When the power station is not running, the louvers need to be closed to prevent sand and rainwater from entering and damaging the equipment inside the power station.

[0003] Currently, the control methods for the operation of motorized louvers in power plants typically involve manually rotating the on / off knob on the louvers or setting a local control knob for the louvers' operation, which is then activated by power supply. However, for unattended power plants at high altitudes, users cannot control the louvers using either of these methods.

[0004] Therefore, the louvers in the modular power station need to be remotely and locally controlled to meet the need for intelligent control of the louvers in the power station when unattended. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art, ensuring both local control of the power station louvers and remote control of the louvers, and to provide a dual-mode control circuit for power station electric louvers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A dual-mode control circuit for a power station's electric louver includes: A first power switch is used to connect and disconnect the power supply to the forward rotation circuit of the reversible motor; a second power switch is used to connect and disconnect the power supply to the reverse rotation circuit of the reversible motor; a first remote control switch is used to receive a remote start signal and connect to the controller of the first power switch to control the start and stop of the first power switch; a second remote control switch is used to receive a remote stop signal and connect to the controller of the second power switch to control the start and stop of the second power switch; a first limit switch is used to sense the stop position of the louvers and disconnect the forward rotation circuit when the louvers reach the stop position; a second limit switch is used to sense the stop position of the louvers and disconnect the reverse rotation circuit when the louvers reach the stop position; a manual start switch is used to connect to the controller of the first power switch to control the start and stop of the first power switch; a manual stop switch is used to connect to the controller of the second power switch to control the start and stop of the second power switch.

[0007] Preferably, both the first power switching device and the second power switching device are DC contactors, namely the first DC contactor and the second DC contactor.

[0008] Preferably, the forward rotation circuit of the reversible motor includes a first normally open contact and a second normally open contact of a first DC contactor. One end of the first normally open contact of the first DC contactor is connected to a power supply terminal, and the other end is connected to a first terminal of the reversible motor. The second terminal of the reversible motor is connected to a ground wire after being connected to the second normally open contact of the first DC contactor. The reverse rotation circuit of the reversible motor includes a first normally open contact and a second normally open contact of a second DC contactor. One end of the first normally open contact of the second DC contactor is connected to a power supply terminal, and the other end is connected to a second terminal of the reversible motor. The first terminal of the reversible motor is also connected to a ground wire after being connected to the second normally open contact of the second DC contactor.

[0009] Preferably, both the first remote control switch and the second remote control switch are relays, namely a first relay and a second relay. The first relay includes a remote start signal input terminal and a normally open contact of the first relay. The remote start signal input terminal is used to connect to the remote start signal output terminal of an external remote device. The second relay includes a remote stop signal input terminal and a normally open contact of the second relay. The remote stop signal input terminal is used to connect to the remote stop signal output terminal of an external remote device.

[0010] Preferably, one end of the normally open contact of the first relay is connected to the power supply terminal, and the other end of the normally open contact of the first relay is connected in series with the coil of the first DC contactor and the first limit switch and then grounded. The manual opening switch is connected in parallel across the two ends of the normally open contact of the first relay. The power supply terminal is also connected to one end of the normally open contact of the second relay. The other end of the normally open contact of the second relay is connected in series with the coil of the second DC contactor and the second limit switch and then grounded. The manual shut-off switch is connected in parallel across the two ends of the normally open contact of the second relay.

[0011] Preferably, both the first limit switch and the second limit switch are normally closed switches.

[0012] Preferably, the power supply terminal is used to connect to a DC power supply, and the forward and reverse motor is a DC motor.

[0013] The beneficial effects of this utility model are: This invention allows for manual and remote automatic control selection by setting up a parallel manual opening switch and a first relay capable of receiving remote opening signals. It also includes a first DC contactor controlling the forward rotation circuit of the electric louver's reversible motor, with a first limit switch automatically stopping the electric louver when it is opened. Similarly, it allows for manual and remote automatic control selection by setting up a parallel manual closing switch and a second relay capable of receiving remote closing signals. Furthermore, it includes a second DC contactor controlling the reversible circuit of the electric louver's reversible motor, with a second limit switch automatically stopping the electric louver when it is closed.

[0014] This invention enables both local and remote control of the power station's louvers, facilitating unattended operation within the modular power station and achieving intelligent operation of the modular power station. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings: Figure 1 This is the circuit schematic diagram of this utility model. Detailed Implementation

[0016] like Figure 1 As shown, this utility model provides a dual-mode control circuit for a power station's electric louver, comprising: a first power switch for connecting and disconnecting the forward rotation circuit of the reversible motor M from the power supply; and a second power switch for connecting and disconnecting the reverse rotation circuit of the reversible motor M from the power supply. The first and second power switches can be contactors or relays. In this embodiment, both the first and second power switches are DC contactors, referred to as a first DC contactor and a second DC contactor, respectively. The first DC contactor includes a 1kM coil, a first normally open contact 1kM-1, and a second normally open contact 1kM-2. The second DC contactor includes a 2kM coil, a first normally open contact 2kM-1, and a second normally open contact 2kM-2.

[0017] A first remote control switch receives a remote on signal and connects to the controller of a first power switch device to control the on / off state of the first power switch device. A second remote control switch receives a remote off signal and connects to the controller of a second power switch device to control the on / off state of the second power switch device. Both the first and second remote control switches can be relays or intelligent remote switches. In this embodiment, both the first and second remote control switches are relays, referred to as the first relay and the second relay, respectively. The first relay includes a remote on signal input terminal and a normally open contact J1. The remote on signal input terminal is used to connect to the remote on signal output terminal of an external remote device. The second relay includes a remote off signal input terminal and a normally open contact J2. The remote off signal input terminal is used to connect to the remote off signal output terminal of an external remote device. Both the remote on signal and the remote off signal are output by an external remote device, which can be a PLC controller or a monitoring system.

[0018] The first limit switch SQ1 senses the open / stop position of the veil and disconnects the forward rotation circuit when the veil reaches the stop position. The second limit switch SQ2 senses the closed / stop position of the veil and disconnects the reverse rotation circuit when the veil reaches the stop position. Both the first limit switch SQ1 and the second limit switch SQ2 are normally closed switches. When the veil is opened and reaches the sensed position, the first limit switch SQ1 opens; when the motorized veil is closed and reaches the sensed position, the second limit switch SQ2 opens.

[0019] A manual on switch is used to connect to the controller of the first power switch device to control the on and off states of the first power switch device; a manual off switch is used to connect to the controller of the second power switch device to control the on and off states of the second power switch device. To save space and facilitate control, the manual on switch and manual off switch are respectively the on and off positions of a local knob 1SA.

[0020] Specifically, the forward rotation circuit of the reversible motor M includes a first normally open contact 1kM-1 and a second normally open contact 1kM-2 of a first DC contactor. One end of the first normally open contact 1kM-1 is connected to the power supply terminal, and the other end is connected to the first terminal of the reversible motor M. The second terminal of the reversible motor M is connected to the ground wire after being connected to the second normally open contact 1kM-2 of the first DC contactor. One end of the normally open contact J1 of the first relay is connected to the power supply terminal, and the other end of the normally open contact J1 of the first relay is connected in series with the coil 1kM of the first DC contactor and the first limit switch SQ1 and then grounded. The manual start switch is connected in parallel across the two ends of the normally open contact J1 of the first relay.

[0021] Specifically, the reversing circuit of the reversing motor M includes the first normally open contact 2kM-1 of the second DC contactor and the second normally open contact 2kM-2 of the second DC contactor. One end of the first normally open contact 2kM-1 of the second DC contactor is connected to the power supply terminal, and the other end is connected to the second terminal of the reversing motor M. The first terminal of the reversing motor M is also connected to the ground wire after being connected to the second normally open contact 2kM-2 of the second DC contactor. The power supply terminal is also connected to one end of the normally open contact J2 of the second relay. The other end of the normally open contact J2 of the second relay is connected in series with the coil 2kM of the second DC contactor and the second limit switch SQ2 and then grounded. The manual shut-off switch is connected in parallel across the two ends of the normally open contact J2 of the second relay.

[0022] By setting a first relay to receive a remote opening signal, the coil 1kM of the first DC contactor is energized, which in turn controls the first normally open contact 1kM-1 and the second normally open contact 1kM-2 of the first DC contactor to close, thereby controlling the connection of the forward circuit to the power supply, thus enabling the remote opening of the venetian blinds. By setting a second relay to receive a remote closing signal, the coil 2kM of the second DC contactor is energized, which in turn controls the first normally open contact and the second normally open contact of the second DC contactor to close, thereby controlling the connection of the reverse circuit to the power supply, thus enabling the remote closing of the venetian blinds.

[0023] The power terminal is for connecting a DC power source, which can be a DC 24V battery. The forward and reverse motor M is a DC motor.

[0024] This utility model enables manual or remote control of the louvers inside the modular power station. The specific process is as follows: When the power station is in operation, the louvers need to be opened. When someone is on duty, rotate the local knob 1SA to the open position. When no one is on duty, a remote opening signal is sent to the first relay through an external remote device. The coil 1kM of the first DC contactor is energized, and both the first normally open contact 1kM-1 and the second normally open contact 1kM-2 of the first DC contactor are closed. The forward rotation circuit of the forward and reverse motor M is connected, and the electric louvers begin to open. When the electric louvers are fully opened, the first limit switch SQ1 is opened, the coil 1kM of the first DC contactor is de-energized, and both the first normally open contact 1kM-1 and the second normally open contact 1kM-2 of the first DC contactor are opened. The forward rotation circuit of the forward and reverse motor M of the electric louvers is disconnected, and the electric louvers stop opening.

[0025] When the power station stops operating and the blinds need to be closed, if someone is on duty, rotate the local knob 1SA to the closed position. If no one is on duty, a remote closing signal is sent to the second relay via an external remote device. The coil 2kM of the second DC contactor is energized, and both the first normally open contact 2kM-1 and the second normally open contact 2kM-2 of the second DC contactor are closed. The reverse circuit of the forward and reverse motor M of the electric blinds is connected, and the electric blinds begin to close. When the electric blinds are fully closed, the second limit switch SQ2 is opened, the coil 2kM of the second DC contactor is de-energized, and both the first normally open contact 2kM-1 and the second normally open contact 2kM-2 of the second DC contactor are opened. The reverse circuit of the forward and reverse motor M of the electric blinds is disconnected, and the electric blinds stop closing.

[0026] This invention enables both local and remote control of the power station's louvers, facilitating unattended operation within the modular power station and achieving intelligent operation of the modular power station.

[0027] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope defined in the claims.

Claims

1. A dual mode control circuit for a power station motorized blind, characterized in that, include: The first power switching device is used to connect and disconnect the power supply to the forward rotation circuit of the reversible motor. The second power switching device is used to connect and disconnect the power supply to the reverse circuit of the forward and reverse motor. The first remote control switch is used to receive a remote turn-on signal and is connected to the controller of the first power switch device to control the turn-on and turn-off of the first power switch device. The second remote control switch is used to receive a remote shutdown signal and is connected to the controller of the second power switch device to control the opening and closing of the second power switch device. The first limit switch is used to sense the opening and stopping position of the louver and disconnect the forward rotation circuit when the louver reaches the stopping position; The second limit switch is used to sense the closed stop position of the louver and disconnect the reverse circuit when the louver reaches the stop position. A manual switch is used to connect to the controller of the first power switch device and control the opening and closing of the first power switch device. The manual shut-off switch is used to connect to the controller of the second power switch device and control the opening and closing of the second power switch device.

2. The dual mode control circuit for a power station motorized blind of claim 1, wherein, Both the first power switching device and the second power switching device are DC contactors, namely the first DC contactor and the second DC contactor.

3. The dual mode control circuit for a power station motorized blind of claim 2, wherein, The forward rotation circuit of the reversible motor includes a first normally open contact and a second normally open contact of a first DC contactor. One end of the first normally open contact of the first DC contactor is connected to the power supply terminal, and the other end is connected to the first end of the reversible motor. The second end of the reversible motor is connected to the ground wire after being connected to the second normally open contact of the first DC contactor. The reversing circuit of the forward and reverse motor includes the first normally open contact of the second DC contactor and the second normally open contact of the second DC contactor. One end of the first normally open contact of the second DC contactor is connected to the power supply terminal, and the other end is connected to the second end of the forward and reverse motor. The first end of the forward and reverse motor is also connected to the ground wire after being connected to the second normally open contact of the second DC contactor.

4. The dual mode control circuit for a power station motorized blind of claim 3, wherein, Both the first remote control switch and the second remote control switch are relays, namely the first relay and the second relay. The first relay includes a remote start signal input terminal and a normally open contact of the first relay. The remote start signal input terminal is used to connect to the remote start signal output terminal of an external remote device. The second relay includes a remote stop signal input terminal and a normally open contact of the second relay. The remote stop signal input terminal is used to connect to the remote stop signal output terminal of an external remote device.

5. The dual-mode control circuit for the power station's electric louvers according to claim 4, characterized in that, One end of the normally open contact of the first relay is connected to the power supply terminal, and the other end of the normally open contact of the first relay is connected in series with the coil of the first DC contactor and the first limit switch and then grounded. The manual opening switch is connected in parallel across the two ends of the normally open contact of the first relay. The power supply terminal is also connected to one end of the normally open contact of the second relay. The other end of the normally open contact of the second relay is connected in series with the coil of the second DC contactor and the second limit switch and then grounded. The manual shut-off switch is connected in parallel across the two ends of the normally open contact of the second relay.

6. The dual mode control circuit for a power station motorized blind of claim 1, wherein, Both the first limit switch and the second limit switch are normally closed switches.

7. The dual mode control circuit for a power station motorized blind of claim 1, wherein, The power connection is used for connecting a direct current power supply, and the forward-reverse motor is a direct current motor.

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