Power-off protection device for electrolytic bath

Abstract

The utility model belongs to the technical field of electrolytic baths, and particularly relates to a power-off protection device for an electrolytic bath, which comprises a main power supply connected with the electrolytic bath and used for providing a normal working power supply for the electrolytic bath. The emergency power supply is connected with the electrolytic cell in parallel and provides a control power supply for the relay when the main power supply is turned off; the control module is connected between the main power supply and the electrolytic bath and is used for monitoring the state of the main power supply and sending a control signal to the relay when the main power supply is emergently closed; and the relay is connected with the emergency power supply and is used for controlling the on-off of the emergency circuit. According to the utility model, the protection branch circuit is opened under the control of the PLC to release residual charges in the electrolytic bath, so that the safe operation of the electrolytic bath is ensured, the risk that a human body touches the electrolytic bath by mistake during power failure and is damaged by the residual charges is avoided, overpressure and damage caused by continuous working of the residual charges are avoided, and the service life of the electrolytic bath is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrolytic cells, and particularly relates to a power-off protection device for an electrolytic cell. Background Art

[0002] An electrolytic cell is composed of a cell body, an anode and a cathode, and most use a diaphragm to separate the anode chamber and the cathode chamber. It is divided into three categories: aqueous solution electrolytic cell, molten salt electrolytic cell and non-aqueous solution electrolytic cell according to different electrolytes. When direct current passes through the electrolytic cell, an oxidation reaction occurs at the anode-solution interface, and a reduction reaction occurs at the cathode-solution interface to produce the required products.

[0003] In the existing electrolytic cell, when the main power supply is suddenly turned off, due to the residual charge inside the electrolytic cell, it may cause abnormal electrochemical reactions inside the electrolytic cell, affecting the safe operation and service life of the electrolytic cell. At present, there is no effective solution to quickly release the residual charge in the electrolytic cell.

[0004] In view of this, the utility model provides a power-off protection device for an electrolytic cell, which can quickly release the residual charge in the electrolytic cell when the main power supply of the electrolytic cell is suddenly turned off. Content of the Utility Model

[0005] To achieve the above object, the utility model provides the following technical solution: A power-off protection device for an electrolytic cell, comprising:

[0006] A main power supply, which is connected to the electrolytic cell and used to provide a normal working power supply for the electrolytic cell;

[0007] An emergency power supply, which is connected in parallel with the electrolytic cell and used to provide a control power supply for the relay when the main power supply is turned off;

[0008] A control module, which is connected between the main power supply and the electrolytic cell and used to monitor the state of the main power supply and send a control signal to the relay when the main power supply is suddenly turned off;

[0009] A relay, which is connected to the emergency power supply and used to control the on-off of the emergency circuit.

[0010] Preferably, as a power-off protection device for an electrolytic cell of the utility model, the control module is a programmable logic controller (PLC).

[0011] Preferably, as a power-off protection device for an electrolytic cell of the utility model, the input signal of the control module is: 0 - 10V DC, the output signal is: 4 - 20mA, and the working voltage is: DC 24V.

[0012] Preferably, for a power-off protection device for an electrolytic cell according to the present utility model, the input voltage of the main power supply: AC 220 - 380V, the output voltage: DC 24V, and the output current: 5A.

[0013] Preferably, for a power-off protection device for an electrolytic cell according to the present utility model, the emergency power supply is a battery pack or an uninterruptible power supply (UPS).

[0014] Preferably, for a power-off protection device for an electrolytic cell according to the present utility model, the capacity of the emergency power supply: 12V 7Ah.

[0015] Preferably, for a power-off protection device for an electrolytic cell according to the present utility model, the rated voltage of the relay: DC 24V, and the rated current: 10A.

[0016] Preferably, for a power-off protection device for an electrolytic cell according to the present utility model, it further includes: a grounding resistor, which is connected between the relay and the emergency power supply to form a branch circuit for releasing the residual charge in the electrolytic cell to the ground.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] The present utility model controls the opening of the protection branch circuit through a PLC to release the residual charge in the electrolytic cell, ensuring the safe operation of the electrolytic cell. At the same time, it avoids the risk of human body being injured by the residual charge when touching the electrolytic cell by mistake during power-off, as well as overvoltage and damage caused by the continuous operation of the residual charge, and prolongs the service life of the electrolytic cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0020] Figure 1 is a schematic structural diagram of the device of the present utility model;

[0021] Figure 2 is a schematic circuit diagram of the present utility model.

[0022] In the figure: 1. Relay; 2. Main power supply; 3. Emergency power supply; 4. Electrolytic cell; 5. Branch circuit; 6. Control module; 7. Grounding resistor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] The present utility model relates to a power-off protection device for an electrolytic cell, as Figure 1 - Figure 2 shown, which includes a main power supply 2 connected to the electrolytic cell 4, an emergency power supply 3 connected in parallel with the electrolytic cell 4, a control module 6 connected between the main power supply 2 and the electrolytic cell 4, and a branch circuit 5 formed by connecting a relay 1, the emergency power supply 3, and a grounding resistor 7 in series;

[0025] In this embodiment, the input voltage of the main power supply 2 is: AC 220 - 380V, the output voltage is: DC 24V, and the output current is: 5A, which is used to provide a stable power supply for the normal operation of the electrolytic cell 4. The emergency power supply 3 is a battery pack, an uninterruptible power supply (UPS), or other backup power supply systems, which is used to provide the necessary power for the relay 1 and the control module 6 when the main power supply 2 is turned off, so as to ensure that the device can operate normally in an emergency. In this embodiment, the capacity of the emergency power supply 3 is 12V 7Ah.

[0026] Further, the control module 6 is a programmable logic controller (PLC), which is internally provided with a power supply monitoring circuit for monitoring the state of the main power supply 2 and sending a control signal to the relay 1 when a power supply abnormality is detected. In this embodiment, the input signal of the control module 6 is: 0 - 10V DC, the output signal is: 4 - 20mA, the working voltage is: DC 24V, and the power supply monitoring circuit therein is a relatively mature existing technology and has been disclosed in the prior art with the publication number: CN205787755U.

[0027] Further, the relay 1 is the core component of this device, which is used to quickly switch the on-off state of the emergency circuit when an abnormality of the main power supply 2 is detected. In this embodiment, the rated voltage of the relay 1 is: DC 24V, and the rated current is: 10A.

[0028] Working principle: During normal operation, the main power supply 2 provides the working power supply for the electrolytic cell 4. The relay 1 is in the off state, the branch circuit 5 is not conducting, and the control module 6 monitors the main power supply 2. When the main power supply 2 is emergently shut down, after detecting the change in the power supply state, the control module 6 immediately starts the emergency response program and sends a control signal to the relay 1, instructing it to switch to the emergency state. After receiving the control signal, the relay 1 immediately closes, enabling the emergency power supply 3 to supply power to the relay 1. After the relay 1 closes, the branch circuit 5 conducts, and the residual charge in the electrolytic cell 4 flows through the branch circuit 5 to the set discharge circuit or load to release the residual charge.

[0029] In summary, the utility model can ensure that the residual charge in the electrolytic cell 4 can be effectively released in the case of an emergency shutdown of the main power supply 2, thereby ensuring the safe operation of the electrolytic cell 4 and extending its service life.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A power-off protection device for an electrolytic cell, characterized in that, Comprising: A main power supply (2), the main power supply (2) being connected to an electrolytic cell (4) for providing a normal operating power supply to the electrolytic cell (4); An emergency power supply (3), being connected in parallel with the electrolytic cell (4) and providing a control power supply to a relay (1) when the main power supply (2) is turned off; A control module (6), being connected between the main power supply (2) and the electrolytic cell (4) for monitoring the state of the main power supply (2) and sending a control signal to the relay (1) when the main power supply (2) is emergently turned off; A relay (1), being connected to the emergency power supply (3) for controlling the on / off of an emergency circuit.

2. The power-off protection device for an electrolytic cell according to claim 1, characterized in that: The control module (6) is a programmable logic controller (PLC).

3. The power-off protection device for an electrolytic cell according to claim 2, characterized in that: Input signal of the control module (6): 0 - 10V DC, output signal: 4 - 20mA, operating voltage: DC 24V.

4. The power-off protection device for an electrolytic cell according to claim 2, characterized in that: Input voltage of the main power supply (2): AC 220 - 380V, output voltage: DC 24V, output current: 5A.

5. The power-off protection device for an electrolytic cell according to claim 2, characterized in that: The emergency power supply (3) is a battery pack or an uninterruptible power supply (UPS).

6. The power-off protection device for an electrolytic cell according to claim 5, characterized in that: Capacity of the emergency power supply (3): 12V 7Ah.

7. The power-off protection device for an electrolytic cell according to claim 6, characterized in that: Rated voltage of the relay (1): DC 24V, rated current: 10A.

8. A power-off protection device for an electrolytic cell according to any one of claims 1-7, characterized in that: Further comprising: A grounding resistance (7), the grounding resistance (7) being connected between the relay (1) and the emergency power supply (3) to form a branch (5) for discharging residual charges in the electrolytic cell (4) to the ground.

Images