An automatic control closed cooling and ventilation system for the rectification station of an electrolytic aluminum plant

Abstract

The invention discloses an automatic control airtight cooling and ventilating system of an electrolytic aluminum plant rectification station. A water-air cooler is arranged on an underground layer of the rectification station to exhaust cold air, and the cold air cools a rectifier cabinet, an alternate-current bus, a direct-current bus and a direct-current high-current disconnecting switch in a rectifier chamber through a vent hole. Cooled hot air returns to the water-air cooler through a vent channel, and cooling and ventilating circulating is completed. The airtight cooling and ventilating system is adopted, so that the influence of external environment on rectifying equipment of the electrolytic aluminum plant rectification station is solved well, the running stability of the rectifying equipment is improved, and the service life of the rectifying equipment is prolonged. A temperature automatic control system is adopted, so that a good energy-saving effect is achieved, and running costs are lowered. A cooling water system of a cooler of the rectifier cabinet is comprehensively utilized, so that equipment investment is saved.

Description

Technical field [0001] The invention relates to an automatically controlled closed cooling ventilation system for the rectifier station of an electrolytic aluminum plant. By adopting the automatically controlled closed cooling ventilation system, the influence of external environmental factors on the rectifier equipment of the rectifier station of the electrolytic aluminum plant is reduced, and the operation stability of the rectifier equipment is improved. And longevity. Background technique [0002] A large amount of heat is generated in the rectification process of the rectification of the electrolytic aluminum plant; 90%-95% of the heat is taken away by the cooler of the rectification equipment, and the remaining part is dissipated into the surrounding air. At the same time, the AC and DC buses and DC high-current isolation switches in the rectifier station also radiate heat into the air. In order to ensure the normal operation of the rectifier unit, the ventilation cooling ...

AI Technical Summary

Problems solved by technology

Natural ventilation system and mechanical ventilation system are the most widely used, but because of the air intake or exhaust from the outside through the air inlet and outlet, it is greatly affected by the external environment; when used in coastal, sandy, heavily polluted, hot or cold areas, the Affect the operation stability and life of the rectifier equipment

The construction investment, operation and maintenance costs of the air conditioning and ventilation system are high, and when the air outlet of the air conditioner is used directly on the rectification equipment, the rectification equipment is prone to condensation and the cooler of the rectification equipment is prone to leakage due to the uneven temperature difference between cold and hot. The air outlet cannot directly face the rectification equipment, which leads to uneven ventilation and heat dissipation of the air conditioning and ventilation system, and the use effect is not good. At present, rectifiers in electrolytic aluminum plants are rarely used

Images