Air environment purification system for subway tunnel and running method thereof

Abstract

The invention discloses an air environment purification system for a subway tunnel. The system comprises a relatively closed unit, a polluted air purification unit, a metal pollutant recovery unit and an electric control unit. A running method of the air environment purification system comprises the steps that the relatively closed air environment purification system is arranged in a subway tunnel and along the inner wall of the tunnel; by utilizing an air curtain, an air collection box, an air purification device, an ion purification device, an air exhausting and dust cleaning device, a vacuum dust suction device, a large-wave adsorption purification device, a super-rough surface adsorption purification device, an electromagnetic collection device and other devices of the purification system, polluted air near the interior of the tunnel is purified, and the inner air environment of the whole tunnel is purified by several-time running of a train runs several times, wherein the polluted air is brought by piston wind formed when the train moves in the tunnel. According to the air environment purification system for the subway tunnel, an integrated purification mode of coping with all motions by remaining motionless is adopted, the running process of the train is the process of purifying air in the subway tunnel, and the defects are overcome that movable subway tunnel cleaning equipment and distributed installation equipment are high in energy consumption, high in late-period management cost and the like.

Description

technical field [0001] The invention relates to the technical field of subway tunnel air environment purification, in particular to a subway tunnel air environment purification system and an operating method thereof. Background technique [0002] By the end of 2012, 15 cities across the country had built subways, with a total mileage of 2,173.73 kilometers. In 2020, 40 cities across the country will build subways, with a total planned mileage of 7,000 kilometers. Among them, the subways in Beijing, Shanghai and Guangzhou have developed significantly. By the end of 2012, Beijing had 17 subway lines with an operating mileage of 456 kilometers; Shanghai had 12 subway lines with an operating mileage of 469 kilometers; and Guangzhou had 8 subway lines. The operating mileage reached 299 kilometers. With the development of the subway, people spend more and more time on the subway. As a transportation system with an extremely important position in big cities, the subway transports...

AI Technical Summary

Problems solved by technology

When the train is running in the tunnel, because the ratio of the cross-sectional area of ​​the train to the cross-sectional area of ​​the tunnel (blockage ratio) is usually very large, the "piston effect" causes changes in air movement and air pressure: when the "piston wind" is weak, the resulting The air movement and air pressure are not obvious; but when the "piston wind" is strong, it will cause the wind speed to be too high, and the high wind speed will bring up the dust or garbage on the wall

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