Electrolytic bath novel short-circuit device

Abstract

The invention discloses an electrolytic bath novel short-circuit device. The electrolytic bath novel short-circuit device is two short-circuit devices designed according to the layout of electrolyticbath cathode buses, the gap of two electrolytic bath electric conducting main current buses and a civil engineering cross beam; one is a concave short-circuit device (figure 3), and the other one is astraight short-circuit device (figure 4); after the short-circuit device is used, bath stop current and voltage are stopped on the electric conducting main current buses to thoroughly change passingof the current and the voltage from cathode buses and stand column short-circuit ports during stopping of a traditional electrolytic bath, so that the pressure drop of the stand column short-circuit ports and the cathode buses during stopping of the bath is eliminated, and more contribution is given for energy conservation and consumption reduction of enterprises; and the technology is simple in operation, high in usability and more obvious in power saving effect, and achieves a certain popularization and application value.

Description

technical field [0001] The invention relates to the technical field of aluminum electrolytic cells, in particular to a novel short-circuit device for electrolytic cells. Background technique [0002] It has been more than 60 years since the production of electrolytic cells in China's non-ferrous aluminum industry. From the power supply of 2 column busbars of self-baking 45KA electrolytic cells to the current power supply of 500KA 7 column busbars, the power supply has increased by 10 times. Dozens of units have been increased to hundreds of units, the control system and various technical conditions of the electrolyzer have been greatly improved, but the pressure drop at the short-circuit port of the electrolyzer when the electrolyzer is stopped remains unchanged. The 500mv from the baked 45KA electrolytic cell has dropped to the current 400mv of the 500KA electrolytic cell. With the shortage of power supply and rising electricity prices, energy conservation in the aluminum i...

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Problems solved by technology

[0002] It has been more than 60 years since the production of electrolytic cells in China's non-ferrous aluminum industry. From the power supply of 2 column busbars of self-baking 45KA electrolytic cells to the current power supply of 500KA 7 column busbars, the power supply has increased by 10 times. Dozens of units have been increased to hundreds of units, the control system and various technical conditions of the electrolyzer have been greatly improved, but the pressure drop at the short-circuit port of the electrolyzer when the electrolyzer is stopped remains unchanged. The 500mv from the baked 45KA electrolytic cell has dropped to the current 400mv of the 500KA electrolytic cell. With the shortage of power supply and rising electricity prices, energy conservation in the aluminum industry has become a major issue in recent years. If an aluminum factory overhauls 100 400KA electrolytic cells every year, each one will stop. The overhaul time is 30 days, and the average voltage drop at the short-circuit port when the tank is stopped is 380mv. Then, the power consumption wasted by stopping the tank for one year is 456,000kwh. Therefore, many aluminum factories have worked hard to create a variety of short circuits in order to reduce the voltage drop at the short-circuit port when the tank is stopped. Methods, some directly weld 6 or 7 column busbars together with aluminum plates, some cross two large busbars from this electrolytic tank to the next tank, and some install shunts on the short circuit, etc. etc., the energy-saving effect is not ideal. The biggest drop is that the average value of welding the column busbars with aluminum plates is only 50mv. When the power is cut off for a period of time and then re-supplied, the effect of the electrolyzer will increase, and the result will outweigh the gain

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