Portable aluminum electrolysis cell zero drift detecting and positioning device

Abstract

The utility model belongs to the technical field of aluminum electrolysis production, and provides a portable aluminum electrolysis cell zero drift detecting and positioning device which comprises an on-site voltage acquisition sub-device and a portable receiving and displaying sub-device, the field voltage acquisition sub-device comprises a voltage sampling isolator, a PLC and a wireless transmitter; the portable receiving and displaying sub-device comprises a wireless signal receiver, a zero display screen and a working indicating lamp; through the on-site voltage acquisition sub-device and the portable receiving display sub-device, the problems of low manual measurement efficiency and large potential safety hazard are solved, and the stability and the safety of the operation of the electrolytic cell are improved.

Description

A portable zero-point drift detection and positioning device for aluminum electrolysis cells Technical Field

[0001] This utility model relates to the field of aluminum electrolysis production technology, and in particular to a portable aluminum electrolysis cell zero-point drift detection and positioning device. Background Technology

[0002] In aluminum electrolysis production, the stable operation of the electrolytic cell is crucial to the quality of aluminum products and production efficiency, and the zero-point position of the electrolytic cell is a key parameter affecting the stability of the entire electrolysis system. The root cause of zero-point drift in the power supply of the aluminum electrolysis system is leakage in the electrolytic cell, a phenomenon that is widespread and difficult to eradicate. Currently, zero-point drift is mainly measured by using a multimeter to measure the voltage between the busbar and the grounding electrode in the electrolysis plant.

[0003] Currently, zero-point measurement mainly relies on manual methods, requiring two people to work together—one to measure and one to record. However, the high current and strong magnetic field near the busbar pose a risk of electric shock to operators. Moreover, the manual measurement process is cumbersome and inefficient, making it difficult to meet the demands of real-time, high-efficiency production and unable to intervene in zero-point drift in a timely manner. In the area of ​​zero-point drift monitoring in aluminum electrolysis, with the expansion of production scale and the advancement of intelligent manufacturing, traditional manual measurement methods have become a bottleneck restricting the improvement of production efficiency and safe production, urgently requiring more advanced monitoring technologies and equipment. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a portable aluminum electrolysis cell zero-point drift detection and positioning device to solve the problems of low efficiency and high safety risks of manual measurement.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] A portable zero-point drift detection and positioning device for aluminum electrolytic cells includes: a field voltage acquisition sub-device and a portable receiving and display sub-device; the field voltage acquisition sub-device includes: a voltage sampling isolator, a PLC with a display screen, and a wireless transmitter connected in sequence; the portable receiving and display sub-device includes: a wireless signal receiver and a zero-point display screen and a working indicator light connected to the wireless signal receiver;

[0007] The wireless signal receiver is connected to the wireless transmitter via a radio frequency signal;

[0008] The voltage sampling isolator is used to collect voltage information of the midpoint bus of the electrolytic cell series in the power supply system of the aluminum electrolytic cell series, and transmit the voltage information to the PLC; the PLC is used to calculate the zero-point drift cell number information, and transmit the calculated zero-point drift cell number information to the wireless signal receiver through the wireless transmitter; the wireless signal receiver is used to receive the zero-point drift cell number information, and transmit the zero-point drift cell number information to the zero-point display screen; the zero-point display screen is used to display the zero-point drift cell number information; the working indicator light is used to indicate normal operation with green and to indicate low battery operation with red flashing.

[0009] Preferably, the field voltage acquisition sub-device includes: a terminal block, an AD-DC power converter, and a field power switch;

[0010] The input terminal of the terminal block is connected to a 220V AC power line, and the output terminal is connected to the AD-DC power converter; the AD-DC power converter is connected to the field power switch; the field power switch is connected to the PLC and the wireless transmitter.

[0011] The AD-DC power converter is used to connect to 220V AC power through the terminal block and output 24V DC power.

[0012] Preferably, the portable receiving and display sub-device includes: a lithium battery, a DC-DC boost converter, and a positioning power switch;

[0013] The lithium battery is connected to the DC-DC boost converter; the DC-DC boost converter is connected to the positioning power switch; the positioning power switch is connected to the wireless signal receiver and the zero-point display screen.

[0014] The DC-DC boost converter is used to convert the 12V DC voltage output by the lithium battery to 24V.

[0015] Preferably, the power supply system for the aluminum electrolytic cell series includes: several workshops; each workshop includes: a transformer, a rectifier bridge, and several electrolytic cells;

[0016] The electrolytic cells are connected in sequence; the transformer is connected to the input end of the rectifier bridge; the output end of the rectifier bridge is connected to the first and last electrolytic cells respectively; the midpoint busbar of the electrolytic cell series is located at the center point of the first and last electrolytic cells.

[0017] Preferably, both the field voltage acquisition sub-device and the portable receiving and display sub-device include: a line card slot;

[0018] The line slot is used to fix the arrangement position of the line.

[0019] Preferably, the PLC has an embedded data processing module;

[0020] The data processing module is used to calculate the voltage information using a preset calculation formula.

[0021] Preferably, the portable receiving and display sub-device further includes: a housing;

[0022] The housing covers the wireless signal receiver, the zero-point display screen, and the working indicator light.

[0023] Preferably, the outer shell is provided with a non-slip grip and a snap-on interface.

[0024] The present invention discloses the following technical effects:

[0025] This invention provides a portable zero-point drift detection and positioning device for aluminum electrolytic cells. By using an on-site voltage acquisition sub-device and a portable receiving and display sub-device, it solves the problems of low efficiency and high safety hazards associated with manual measurement, and achieves rapid positioning of zero-point drift. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 is a schematic diagram of the portable aluminum electrolytic cell zero-point drift detection and positioning device provided in the embodiment of this utility model. Figure 1(a) is a schematic diagram of the on-site voltage acquisition sub-device, and Figure 1(b) is a schematic diagram of the portable receiving and display sub-device.

[0028] Figure 2 is a schematic diagram of the power supply principle for the aluminum electrolytic cell series provided in the embodiment of this utility model;

[0029] Figure 3 is a display effect diagram of the portable zero-point drift measuring device provided in the embodiment of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-Transformer, 2-Rectifier bridge, 3-Electrolytic cell series midpoint busbar, 4-Voltage sampling isolator, 5-Terminal block, 6-PLC, 7-Wireless transmitter, 8-Field power switch, 9-AD-DC power converter, 10-Line card slot, 11-Lithium battery, 12-DC-DC boost converter, 13-Wireless signal receiver, 14-Zero point display, 15-Positioning power switch, 16-Working indicator light, 17-Housing. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] The purpose of this invention is to provide a portable zero-point drift detection and positioning device for aluminum electrolytic cells, which solves the problems of low efficiency and high safety risks associated with manual measurement.

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Figure 1 is a schematic diagram of the portable aluminum electrolytic cell zero-point drift detection and positioning device provided in an embodiment of the present invention, and Figure 2 is a schematic diagram of the power supply principle of the aluminum electrolytic cell series provided in an embodiment of the present invention. As shown in Figures 1(a), 1(b) and 2, the present invention provides a portable aluminum electrolytic cell zero-point drift detection and positioning device, including: a field voltage acquisition sub-device and a portable receiving and display sub-device; the field voltage acquisition sub-device includes: a voltage sampling isolator 4, a PLC 6 with a display screen, and a wireless transmitter 7 connected in sequence; the portable receiving and display sub-device includes: a wireless signal receiver 13 and a zero-point display screen 14 and a working indicator light 16 connected to the wireless signal receiver 13;

[0036] The wireless signal receiver 13 is connected to the wireless transmitter 7 via a radio frequency signal;

[0037] The voltage sampling isolator 4 is used to collect voltage information of the midpoint bus 3 of the electrolytic cell series in the power supply system of the aluminum electrolytic cell series, and transmit the voltage information to the PLC 6; the PLC 6 is used to calculate the zero-point drift cell number information, and transmit the calculated zero-point drift cell number information to the wireless signal receiver 13 through the wireless transmitter 7; the wireless signal receiver 13 is used to receive the zero-point drift cell number information, and transmit the zero-point drift cell number information to the zero-point display screen 14; the zero-point display screen 14 is used to display the zero-point drift cell number information; the working indicator light 16 is used to indicate normal operation by using green and to indicate low battery operation by using red flashing.

[0038] Preferably, the field voltage acquisition sub-device includes: a terminal block 5, an AD-DC power converter 9, and a field power switch 8;

[0039] The input terminal of the terminal block 5 is connected to a 220V AC power line, and the output terminal is connected to the AD-DC power converter 9; the AD-DC power converter 9 is connected to the field power switch 8; the field power switch 8 is connected to the PLC 6 and the wireless transmitter 7.

[0040] The AD-DC power converter 9 is used to connect to 220V AC power through the terminal 5 and output 24V DC power.

[0041] Preferably, the portable receiving and display sub-device includes: a lithium battery 11, a DC-DC boost converter 12, and a positioning power switch 15;

[0042] The lithium battery 11 is connected to the DC-DC boost converter 12; the DC-DC boost converter 12 is connected to the positioning power switch 15; the positioning power switch 15 is connected to the wireless signal receiver 13 and the zero-point display screen 14.

[0043] The DC-DC boost converter 12 is used to convert the 12V DC voltage output by the lithium battery 11 into 24V.

[0044] Referring to Figure 2, the power supply system for the aluminum electrolytic cell series includes: several workshops; each workshop includes: a transformer 1, a rectifier bridge 2, and several electrolytic cells;

[0045] The electrolytic cells are connected in sequence; the transformer 1 is connected to the input end of the rectifier bridge 2; the output end of the rectifier bridge 2 is connected to the first electrolytic cell and the last electrolytic cell respectively; the midpoint busbar 3 of the electrolytic cell series is located at the center point of the first electrolytic cell and the last electrolytic cell.

[0046] Preferably, both the field voltage acquisition sub-device and the portable receiving and display sub-device include: a line card slot 10;

[0047] The line slot 10 is used to fix the arrangement position of the line.

[0048] Preferably, the PLC6 has an embedded data processing module;

[0049] The data processing module is used to calculate the voltage information using a preset calculation formula.

[0050] Preferably, the portable receiving and display sub-device further includes: a housing 17;

[0051] The outer casing 17 covers the wireless signal receiver 13, the zero-point display screen 14, and the working indicator light 16.

[0052] Preferably, the outer casing 17 is provided with a non-slip grip and a snap-on interface.

[0053] Referring to Figures 1(a) and 1(b), this device consists of two parts: a field voltage acquisition sub-device and a portable receiving and display sub-device.

[0054] 1) On-site voltage acquisition sub-device: Installed on the midpoint busbar 3 of the electrolytic cell series, it consists of a voltage sampling isolator 4, a PLC 6, a wireless transmitter 7, and an AD-DC power converter 9. The input terminal of the voltage sampling isolator 4 is connected to the midpoint busbar 3 of the electrolytic cell series and the grounding electrode, and the output terminal is connected to the analog input module of the PLC 6. The PLC 6 has a built-in data processing module that communicates with the portable receiving and display sub-device through the wireless transmitter 7. The AD-DC power converter 9 is connected to 220V AC power through the terminal block 5 and outputs 24V DC power to power the PLC 6 and the wireless transmitter 7. The on-site power switch 8 is connected in series in the power supply circuit to control the on / off state of the device. The line slot 10 is used to fix the voltage sampling line and reduce electromagnetic interference.

[0055] 2) Portable Receiving and Display Sub-device: Composed of a lithium battery 11, a DC-DC boost converter 12, a wireless signal receiver 13, and a zero-point display screen 14. The lithium battery 11 outputs 12V DC power, which is converted to 24V by the DC-DC boost converter 12 to power the wireless signal receiver 13 and the zero-point display screen 14. The wireless signal receiver 13 is paired with the wireless transmitter 7 of the field voltage acquisition sub-device to receive the slot number data and transmit it to the zero-point display screen 14. The outer casing 17 is made of stainless steel and features a non-slip grip and a snap-on interface for easy one-handed carrying. The display screen's working indicator light 16 is located on one side of the outer casing 17; green indicates normal operation, and flashing red indicates low battery.

[0056] Furthermore, the working principle is as follows: The voltage sampling isolator 4 collects the voltage from the midpoint bus 3 of the electrolytic cell series. After internal processing, it accurately reflects the polarity of the voltage and transmits it to the PLC 6. If the voltage is a positive number M1 (in V), the PLC 6 executes the formula "zero-point slot number = 662 + M1 / 4"; if it is a negative number M2, it executes "zero-point slot number = 661 + M2 / 4"; the voltage signal is converted into a slot number offset through the formula.

[0057] Referring to Figure 3, PLC6 sends the calculation results to the portable receiving and display sub-device via wireless transmitter 7. After receiving the results, wireless signal receiver 13 drives zero-point display screen 14 to display the zero-point drift slot number in real time, in the format of "actual zero-point drift slot number: slot XXX".

[0058] The beneficial effects of this utility model are as follows:

[0059] This invention solves the problems of low efficiency and high safety hazards of manual measurement by using an on-site voltage acquisition sub-device and a portable receiving and display sub-device, thereby improving the stability and safety of electrolytic cell operation.

[0060] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0061] This document uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. Furthermore, those skilled in the art will recognize that, based on the ideas of this utility model, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A portable zero-point drift detection and positioning device for aluminum electrolytic cells, characterized in that, include: On-site voltage acquisition sub-device and portable receiving and display sub-device; The field voltage acquisition sub-device includes: a voltage sampling isolator, a PLC with a display screen, and a wireless transmitter connected in sequence; the portable receiving and display sub-device includes: a wireless signal receiver, a zero-point display screen connected to the wireless signal receiver, and a working indicator light; the wireless signal receiver is connected to the wireless transmitter via radio frequency signal; the voltage sampling isolator is used to acquire voltage information of the midpoint bus of the electrolytic cell series in the aluminum electrolytic cell series power supply system, and transmits the voltage information to the PLC; the PLC is used to calculate the zero-point drift cell number information, and transmits the calculated zero-point drift cell number information to the wireless signal receiver through the wireless transmitter; the wireless signal receiver is used to receive the zero-point drift cell number information, and transmit the zero-point drift cell number information to the zero-point display screen; the zero-point display screen is used to display the zero-point drift cell number information; the working indicator light is used to indicate normal operation with green and to indicate low battery operation with red flashing.

2. The portable aluminum electrolytic cell zero-point drift detection and positioning device according to claim 1, characterized in that, The field voltage acquisition sub-device includes: a terminal block, an AD-DC power converter, and a field power switch; the input end of the terminal block is connected to a 220V AC power line, and the output end is connected to the AD-DC power converter; the AD-DC power converter is connected to the field power switch; the field power switch is connected to the PLC and the wireless transmitter; the AD-DC power converter is used to connect to 220V AC power through the terminal block and output 24V DC power.

3. The portable aluminum electrolytic cell zero-point drift detection and positioning device according to claim 1, characterized in that, The portable receiving and display sub-device includes: a lithium battery, a DC-DC boost converter, and a positioning power switch; the lithium battery is connected to the DC-DC boost converter; the DC-DC boost converter is connected to the positioning power switch; the positioning power switch is connected to the wireless signal receiver and the zero-point display screen; the DC-DC boost converter is used to convert the 12V DC voltage output by the lithium battery to 24V.

4. The portable aluminum electrolytic cell zero-point drift detection and positioning device according to claim 1, characterized in that, The power supply system for the aluminum electrolytic cell series includes: several workshops; each workshop includes: a transformer, a rectifier bridge, and several electrolytic cells; the electrolytic cells are connected in sequence; the transformer is connected to the input end of the rectifier bridge; the output end of the rectifier bridge is connected to the first and last electrolytic cells respectively; the midpoint busbar of the electrolytic cell series is located at the center point of the first and last electrolytic cells.

5. The portable aluminum electrolytic cell zero-point drift detection and positioning device according to claim 1, characterized in that, Both the field voltage acquisition sub-device and the portable receiving and display sub-device include: a line slot; the line slot is used to fix the arrangement position of the line.

6. The portable aluminum electrolytic cell zero-point drift detection and positioning device according to claim 1, characterized in that, The PLC has an embedded data processing module; the data processing module is used to calculate the voltage information using a preset calculation formula.

7. The portable aluminum electrolytic cell zero-point drift detection and positioning device according to claim 1, characterized in that, The portable receiving and display sub-device further includes: a housing; the housing covers the wireless signal receiver, the zero-point display screen, and the working indicator light.

8. The portable aluminum electrolytic cell zero-point drift detection and positioning device according to claim 7, characterized in that, The outer shell is equipped with a non-slip grip and a snap-on interface.

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