A feedback system and feedback method for an aluminum foil final-stage electrolysis power supply

Abstract

The invention discloses a feedback system and a feedback method for an aluminum foil final-stage forming electrolytic power source. The system comprises a slot end voltmeter, a slot end voltage and quantity isolation sensor, a machine end voltmeter, a machine end voltage and quantity isolation sensor, a relay, a circuit unit adjustment unit, a conversion switch SB, an electrolytic cell A and an electrolytic cell B. When in use, the slot end voltage is connected to the slot end voltmeter and the slot end quantity isolation sensor, and then connected to the relay. The slot end voltage converts a high-voltage direct current voltage signal into a direct current low-voltage signal of 0 to 10V through the slot end quantity isolation sensor, which is input into a circuit unit of the electrolytic power source for processing, and then transmitted to an adjustment unit for comparison processing. The feedback voltage value is compared with a given voltage of the electrolytic power source, and the adjustment control system of the electrolytic power source adjusts the size of a pulse trigger signal of the electrolytic power source according to the compared data, thereby realizing voltage stabilization or current stabilization operation of the electrolytic power source.

Description

Technical Field

[0001] The invention belongs to the technical field of aluminum foil electrolysis formation, and particularly relates to a feedback system and a feedback method of an aluminum foil final-stage formation electrolysis power supply. Background Art

[0002] In the production process of medium and high voltage electronic aluminum foil formation, it is necessary to stabilize the voltage of the final formation tank to achieve accurate control of the aluminum foil forming voltage. In order to achieve the voltage stabilization control of the formation tank voltage, the first condition to be met is to feed back the tank voltage to the input end of the electrolytic power supply, and by feeding back the tank end voltage to the power supply adjustment unit, the purpose of automatic voltage stabilization control of the electrolytic power supply is achieved.

[0003] However, in the production process of medium and high voltage electronic aluminum foil, accurately and stably feeding back the voltage of the formation tank to the input end of the rectifier power supply is a major problem that plagues aluminum foil manufacturing. The main reason is that the electronic aluminum foil in linkage operation is connected to the positive electrode of the electrolytic power supply, and the plate of the formation tank is connected to the negative electrode of the electrolytic power supply. Therefore, under such special working conditions, the negative electrode is usually fixed to the plate, and the positive electrode needs to be connected to the aluminum roller to feedback the voltage of the final formation tank. This feedback method has prominent problems such as contact resistance, unstable detection data, and large detection data errors, and can no longer meet the production needs of medium and high voltage electronic aluminum foil. Summary of the invention

[0004] In view of the outstanding problems of contact resistance, unstable detection data, large detection data error and the like in the current voltage stabilization control of the final-stage formation tank, the present invention provides a feedback system and a feedback method for an aluminum foil final-stage formation electrolytic power supply, which greatly improves the accuracy of tank end voltage detection.

[0005] The present invention is achieved through the following technical solutions:

[0006] A feedback system for an aluminum foil final forming electrolytic power supply, comprising a tank end voltmeter, a tank end voltage and quantity isolation sensor, a machine end voltmeter, a machine end voltage and quantity isolation sensor, a relay, a circuit unit, an adjustment unit, a conversion switch SB, an electrolytic tank A, and an electrolytic tank B;

[0007] The slot end voltage meter is connected in parallel with the positive and negative electrodes of the slot end voltage;

[0008] The input end of the slot terminal voltage and electric quantity isolation sensor is connected to the positive and negative poles of the slot terminal voltage respectively according to the positive and negative polarities;

[0009] The machine-end voltmeter is connected in parallel with the positive and negative electrodes of the electrolytic power source;

[0010] The input end of the machine-end voltage and electric quantity isolation sensor is connected to the positive and negative electrodes of the electrolytic power supply according to the positive and negative polarities respectively;

[0011] The relay is used for selecting and switching the tank end voltage and the electrolytic power supply, and its normally closed contact is connected to the output end of the tank end power isolation sensor, and its normally open contact is respectively connected to the output end of the machine end voltage and power isolation sensor;

[0012] The circuit unit is connected to the relay and is a processing unit for the electrolytic power supply voltage feedback;

[0013] The regulating unit is connected to the circuit unit and is a regulating control circuit of the electrolytic power supply. By comparing the feedback voltage with the given voltage of the electrolytic power supply, the regulating control system of the electrolytic power supply adjusts the size of the electrolytic power supply pulse trigger signal according to the compared data, thereby realizing the voltage stabilization or current stabilization operation of the electrolytic power supply.

[0014] The conversion switch SB is used to control the action or stillness of the relay, and realize the selection and switching of the cell terminal voltage and the electrolysis power supply feedback voltage.

[0015] Furthermore, the cell end voltage is the voltage of the electrolytic cell that needs feedback; the electrode plate of the electrolytic cell A is the negative electrode of the cell end voltage; and the stainless steel flange of the electrolytic cell B is the positive electrode of the cell end voltage.

[0016] Furthermore, the electrolytic cell B is a formation cell that does not require electrolytic treatment, but has a solution conductivity of more than 50 ms / cm, and has the characteristics of conductivity between the aluminum foil and the liquid, and between the liquid and the stainless steel cell body.

[0017] At the same time, the present invention also provides a feedback method of the feedback system of the above-mentioned medium-high voltage aluminum foil final formation electrolysis power supply, comprising the following steps:

[0018] (1) Connect the negative pole of the cell end voltage to the negative pole of the cell end voltmeter and the negative pole of the input end of the cell end electrical isolation sensor through the high voltage wire of the plate of electrolytic cell A, and then connect the negative pole of the output end of the cell end electrical isolation sensor to the normally closed contact of the relay;

[0019] (2) Connect the positive electrode of the slot end voltage to the positive electrode of the slot end voltmeter and the positive electrode of the input end of the slot end electrical isolation sensor through the stainless steel flange of the forming tank B, and then connect the positive electrode of the output end of the slot end electrical isolation sensor to the normally closed contact of the relay;

[0020] (3) Connect the slot end voltmeter in parallel with the positive and negative electrodes of the slot end voltage to display the slot end voltage in real time, providing a real and effective reference for the adjustment and control of the slot end voltage;

[0021] (4) In aluminum foil formation production, the cell end voltage is converted into a 0-10V DC low voltage signal through the cell end electrical isolation sensor, which is input into the circuit unit of the electrolytic power supply for processing, and then sent to the regulating unit for comparison processing. The feedback voltage value is compared with the given voltage of the electrolytic power supply. The regulating control system of the electrolytic power supply adjusts the size of the electrolytic power supply pulse trigger signal according to the comparison data, thereby realizing the voltage stabilization or current stabilization operation of the electrolytic power supply.

[0022] The working principle of the present invention is as follows:

[0023] In the production process of medium and high voltage electronic aluminum foil formation, the aluminum foil carries the positive voltage of the electrolytic power supply, and the plate of the electrolytic cell is the negative electrode of the electrolytic power supply. Combined with the power supply mode of the formation electrolytic cell, the voltage of electrolytic cell A that needs to be fed back in the formation production process is defined as the cell end voltage. The plate of electrolytic cell A is connected to the negative electrode of the electrolytic power supply, so the negative electrode of the cell end feedback voltage is connected to the plate of electrolytic cell A; in the formation cells of the medium and high voltage electronic aluminum foil formation production line, there are formation cells that do not need to be electrolytically treated, but the conductivity of the solution is as high as 50ms / cm or more. The liquid conductivity is as high as 50ms / cm or more, and it has the characteristics of aluminum foil and liquid conduction, and liquid and stainless steel cell body conduction. This formation cell is defined as formation cell B. Therefore, the positive pole of the slot voltage is connected to the flange of the stainless steel tank body of tank B that is completely conductive with the liquid and aluminum foil; the positive and negative poles of the machine-side feedback voltage are connected to the positive and negative output terminals of the electrolytic power supply; during use, the negative pole of the slot voltage is connected to the negative pole of the slot voltage meter and the negative pole of the input terminal of the slot power isolation sensor through the high-voltage wire of the plate of electrolytic tank A, and then the negative pole of the output terminal of the slot power isolation sensor is connected to the normally closed contact of the relay. The positive pole of the slot voltage is connected to the positive pole of the slot voltage meter and the positive pole of the input terminal of the slot power isolation sensor through the stainless steel flange of the tank body of the formation tank B, and then the positive pole of the output terminal of the slot power isolation sensor is connected to the normally closed contact of the relay. The slot voltage meter is connected in parallel with the positive and negative poles of the slot voltage, which can display the slot voltage in real time and provide a real and effective reference for the adjustment and control of the slot voltage. The cell end voltage converts the high voltage DC voltage signal into a 0-10V DC low voltage signal through the cell end electrical isolation sensor, which is input into the circuit unit of the electrolytic power supply for processing, and then sent to the adjustment unit for comparison processing. That is, by comparing the feedback voltage value with the given voltage of the electrolytic power supply, the electrolytic power supply adjustment control system adjusts the size of the electrolytic power supply pulse trigger signal according to the comparison data, thereby realizing the electrolytic power supply voltage stabilization or current stabilization operation.

[0024] The beneficial effects of the present invention are as follows:

[0025] The voltage feedback system of the present invention has a simple structure, reasonable design, and low manufacturing cost, and solves the difficult problem of large error in slot end voltage detection in the production process of medium and high voltage electronic aluminum foil. At the same time, the voltage feedback system of the present invention has the advantages of stable operation, reliable performance, low cost, easy operation, and can realize the online switching of slot end voltage and power supply voltage, which greatly improves the accuracy of slot end voltage detection and can be widely used in the feedback of the final stage rectifier power supply of medium and high voltage electronic aluminum foil production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the circuit structure of the voltage feedback system of the present invention.

[0027] Figure 2 It is a wiring diagram of the slot terminal voltage of the present invention.

[0028] Figure numerals: 1-tank end voltmeter, 2-tank end power isolation sensor, 3-machine end voltmeter, 4-machine end power isolation sensor, 5-relay, 6-circuit unit, 7-adjustment unit, 8-conversion switch, 9-electrolytic tank A, 10-electrolytic tank B. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Example 1

[0031] A feedback system for an aluminum foil final forming electrolytic power supply, comprising a tank end voltmeter 1, a tank end voltage and quantity isolation sensor 2, a machine end voltmeter 3, a machine end voltage and quantity isolation sensor 4, a relay 5, a circuit unit 6, an adjustment unit 7, a conversion switch SB8, an electrolytic cell A 9, and an electrolytic cell B 10;

[0032] The cell end voltage meter 1 is connected in parallel with the positive and negative electrodes of the cell end voltage; the cell end voltage is the voltage of the electrolytic cell that needs to be fed back, that is, the electrode plate of the electrolytic cell A9 is the negative electrode of the cell end voltage; the stainless steel flange of the electrolytic cell B10 is the positive electrode of the cell end voltage; the electrolytic cell B10 is a formation cell that does not require electrolytic treatment, but the conductivity of the solution is as high as 50ms / cm or more, and has the characteristics of aluminum foil and liquid conduction, and liquid and stainless steel cell body conduction;

[0033] The input end of the slot terminal voltage and electric quantity isolation sensor 2 is connected to the positive and negative poles of the slot terminal voltage respectively according to the positive and negative polarities;

[0034] The machine-end voltmeter 3 is connected in parallel with the positive and negative electrodes of the electrolytic power supply;

[0035] The input end of the machine-side voltage and electric quantity isolation sensor 4 is connected to the positive and negative electrodes of the electrolytic power supply according to the positive and negative polarities respectively;

[0036] The relay 5 is used for selecting and switching the tank end voltage and the electrolytic power supply, and its normally closed contact is connected to the output end of the tank end power isolation sensor 2, and its normally open contact is respectively connected to the output end of the machine end voltage and power isolation sensor 4;

[0037] The circuit unit 6 is connected to the relay 5 and is a processing unit for the electrolytic power supply voltage feedback;

[0038] The regulating unit 7 is connected to the circuit unit 6 and is a regulating control circuit of the electrolytic power supply. By comparing the feedback voltage with the given voltage of the electrolytic power supply, the regulating control system of the electrolytic power supply adjusts the size of the electrolytic power supply pulse trigger signal according to the compared data, thereby realizing the voltage stabilization or current stabilization operation of the electrolytic power supply.

[0039] The conversion switch SB8 is used to control the action or stillness of the relay 5, so as to realize the selective switching between the cell terminal voltage and the electrolysis power supply feedback voltage.

[0040] The feedback method of the feedback system of the aluminum foil final-stage formation electrolysis power supply of this embodiment comprises the following steps:

[0041] (1) Connect the negative electrode of the cell end voltage to the negative electrode of the cell end voltmeter 1 and the negative electrode of the input end of the cell end electrical isolation sensor 2 through the high voltage wire of the electrode plate of the electrolytic cell A 9, and then connect the negative electrode of the output end of the cell end electrical isolation sensor 2 to the normally closed contact of the relay 5;

[0042] (2) Connect the positive electrode of the slot end voltage to the positive electrode of the slot end voltmeter 1 and the positive electrode of the input end of the slot end electrical isolation sensor 2 through the stainless steel flange of the forming tank B 10, and then connect the positive electrode of the output end of the slot end electrical isolation sensor 2 to the normally closed contact of the relay 5;

[0043] (3) Connect the slot end voltage meter 1 in parallel with the positive and negative electrodes of the slot end voltage to display the slot end voltage in real time, providing a real and effective reference for the adjustment and control of the slot end voltage;

[0044] (4) Aluminum foil formation production is carried out. The cell end voltage converts the high-voltage DC voltage signal into a DC low-voltage signal of 0 to 10 V through the cell end electrical isolation sensor 2, which is input into the circuit unit 6 of the electrolytic power supply for processing, and then transmitted to the regulating unit 7 for comparison processing. The feedback voltage value is compared with the given voltage of the electrolytic power supply. The regulating control system of the electrolytic power supply adjusts the size of the electrolytic power supply pulse trigger signal according to the compared data, thereby realizing the voltage stabilization or current stabilization operation of the electrolytic power supply.

[0045] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A feedback system for an aluminum foil final formation electrolysis power supply, characterized in that: It comprises a tank end voltmeter (1), a tank end voltage and quantity isolation sensor (2), a machine end voltmeter (3), a machine end voltage and quantity isolation sensor (4), a relay (5), a circuit unit (6), a regulating unit (7), a conversion switch SB (8), an electrolytic cell A (9), and an electrolytic cell B (10); The slot end voltage meter (1) is connected in parallel with the positive and negative electrodes of the slot end voltage; The input end of the cell end voltage and quantity isolation sensor (2) is connected to the positive and negative electrodes of the cell end voltage according to the polarity of the positive and negative electrodes respectively; the cell end voltage is the voltage of the electrolytic cell to be fed back; the electrode plate of the electrolytic cell A (9) is the negative electrode of the cell end voltage; the stainless steel flange of the electrolytic cell B (10) is the positive electrode of the cell end voltage; the electrolytic cell B (10) is a chemical formation cell that does not require electrolytic treatment, but the conductivity of the solution is as high as 50ms / cm or more, and has the characteristics of aluminum foil and liquid conduction, and liquid and stainless steel cell body conduction; The machine-end voltmeter (3) is connected in parallel with the positive and negative electrodes of the electrolytic power source; The input end of the machine-end voltage and electric quantity isolation sensor (4) is connected to the positive and negative electrodes of the electrolytic power source respectively according to the positive and negative polarities; The relay (5) is used for selecting and switching the tank end voltage and the electrolytic power supply, and its normally closed contact is connected to the output end of the tank end power isolation sensor (2), and its normally open contact is respectively connected to the output end of the machine end voltage and power isolation sensor (4); The circuit unit (6) is connected to the relay (5) and is a processing unit for the electrolytic power supply voltage feedback; The regulating unit (7) is connected to the circuit unit (6) and is a regulating control circuit of the electrolytic power supply. By comparing the feedback voltage with the given voltage of the electrolytic power supply, the regulating control system of the electrolytic power supply adjusts the size of the electrolytic power supply pulse trigger signal according to the compared data, thereby realizing the voltage stabilization or current stabilization operation of the electrolytic power supply. The conversion switch SB (8) is used to control the action or stillness of the relay (5) to achieve the selection and switching of the cell terminal voltage and the electrolysis power supply feedback voltage; The feedback method of the feedback system of the aluminum foil final-stage formation electrolysis power supply comprises the following steps: (1) Connecting the negative electrode of the cell end voltage to the negative electrode of the cell end voltmeter (1) and the negative electrode of the input end of the cell end power isolation sensor (2) through the high voltage wire of the electrode plate of the electrolytic cell A (9), and then connecting the negative electrode of the output end of the cell end power isolation sensor (2) to the normally closed contact of the relay (5); (2) Connect the positive electrode of the slot end voltage to the positive electrode of the slot end voltmeter (1) and the positive electrode of the input end of the slot end electrical isolation sensor (2) through the stainless steel flange of the slot body of the forming tank B (10), and then connect the positive electrode of the output end of the slot end electrical isolation sensor (2) to the normally closed contact of the relay (5); (3) Connect the slot end voltage meter (1) in parallel with the positive and negative electrodes of the slot end voltage to display the slot end voltage in real time, thus providing a real and effective reference for the adjustment and control of the slot end voltage; (4) Aluminum foil formation production is carried out. The cell end voltage is converted into a DC low voltage signal of 0 to 10 V by the cell end electrical isolation sensor (2), which is input into the circuit unit (6) of the electrolytic power supply for processing, and then transmitted to the regulating unit (7) for comparison processing. The feedback voltage value is compared with the given voltage of the electrolytic power supply. The regulating control system of the electrolytic power supply adjusts the size of the electrolytic power supply pulse trigger signal according to the comparison data, thereby realizing the voltage stabilization or current stabilization operation of the electrolytic power supply.

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