Aluminum reduction cell anode current distribution and crimping voltage drop on-line measurement method

Abstract

The invention discloses an aluminum reduction cell anode current distribution and crimping voltage drop on-line measurement method. The method comprises the following steps that: (1) a plurality of equidistant measuring forks are installed on a crossbeam large bus-bar at an anode guide rod; (2) contacts at the end portions of the equidistant measuring forks contact with the anode guide rod so as to acquire signals, the signals are connected to a controller through an integrated circuit, so that the controller performs data processing, and therefore, the measurement of anode current distribution is realized; and (3) contacts at the middle portions of the equidistant measuring forks contact with the contact of the large bus-bar, so that a loop can be formed, and therefore, contact voltage drop measurement can be performed, acquired signals are transmitted to the controller through the integrated circuit, so that the controller can process the signals, and crimping voltage drop measurement is realized. According to the method of the invention, the equidistant measuring forks are adopted to collect the signals, the signals are processed by the controller, and therefore, the measurementof the current distribution and crimping voltage drop is realized; and since the equidistant measuring forks are in wired connection with the controller, the transmission of the signals is stable, and thus, measurement results can be precise.

Description

technical field [0001] The invention relates to an on-line measurement method for anode current distribution and crimping voltage drop of an aluminum electrolytic cell. Background technique [0002] In the production of aluminum electrolysis, pre-baked anode electrolytic cells are mostly used, that is, the pre-baked anode carbon block is connected to the beam busbar of the electrolytic cell by aluminum guide rods. Due to the continuous consumption of carbon blocks in the production process, in order to maintain voltage stability, the computer Constantly adjust the position of the large busbar, resulting in the continuous decline of the large busbar. Therefore, it is necessary to replace the anode and lift the large busbar of the beam regularly. And the important parameters of the quality of operation. The number of anode guide rods is generally between 24 and 48 according to the size of the series current and whether "double anodes" are used. Up to now, these two parameters...

AI Technical Summary

Problems solved by technology

The number of anode guide rods is generally between 24 and 48 according to the size of the series current and whether "double anodes" are used. Up to now, these two parameters are still manually measured offline, that is, on the anode guide rod. Measure the equidistant voltage drop to judge the current distribution of the anode guide rod on the beam busbar. Due to the large number of anode guide rods, the measurement workload is heavy, the labor intensity is high, and the data is unstable. The data is then handed over to the technical personnel for analysis and processing, and the workload is heavy. , because of its hysteresis, it cannot reflect the production situation in time, which has a serious impact on production management.

Although there are some patented technologies for on-line detection, these patented technologies do not include the on-line measurement of crimping voltage drop in this patent, and the measurement device is complicated, the data is transmitted wirelessly, and the signal is extremely unstable under strong magnetic field conditions, which cannot meet the requirements of production. requirements, so it cannot be applied in production so far

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