Auxiliary ventilation system for urban rail transit

Abstract

The invention discloses an intelligent exhaust system for urban rail transit. The intelligent exhaust system can purify and recycle air circulating in urban rail tunnels and supplement air into the tunnels through the outside according to requirements. An air inlet pipe is arranged above the urban rail tunnel, the bottom of the urban rail tunnel communicates with the top of the urban rail tunnel through a gas return pipe; a third fan, a gas purification device and a second fan are sequentially arranged on the gas return pipe, wherein the third fan is located at the end, near the bottom of theurban rail tunnel, of the gas return pipe, and the second fan is located at the end, near the top of the urban rail tunnel, of the gas return pipe; and the first fan comprises a cylindrical shell, anair inlet convergence opening and an air outlet convergence opening are connected with the two ends of the cylindrical shell correspondingly, a collecting box is arranged below the air inlet convergence opening, a second baffle plate is hinged at the bottom of the end, far away from the cylindrical shell, of the air inlet convergence opening, the other end of the second baffle plate is hinged to the top end of a telescopic rod, and the bottom end of the telescopic rod is fixedly connected with the side wall of the air inlet convergence opening.

Description

technical field [0001] The invention belongs to the technical field of urban rail equipment, and in particular relates to an auxiliary ventilation system for urban rail transit. Background technique [0002] With the acceleration of urbanization and the increase of the number of people in the city, it is increasingly difficult for traditional public transport to meet people's travel needs. With the enhancement of urban infrastructure, more efficient urban rail transport has been developed, such as subways, monorails, Light rail trains, but for reasonable routes, construction difficulty, construction cost and other comprehensive factors often need to build tunnels to shorten the distance, but urban rail tunnels need special infrastructure for air circulation due to limited space, and there are gases or pollutants in the tunnels The concentration is reduced, but with the operation of urban rail trains, traditional urban rail transit uses blowers and exhaust fans to solve the v...

AI Technical Summary

Problems solved by technology

[0002] With the acceleration of urbanization and the increase of the number of people in cities, it is increasingly difficult for traditional public transport to meet people's travel needs. With the enhancement of urban infrastructure, more efficient urban rail transport has been developed, such as subways, monorails, Light rail trains, but for reasonable routes, construction difficulty, construction cost and other comprehensive factors often need to build tunnels to shorten the distance, but due to the limited space of urban rail tunnels, special infrastructure is required for air circulation, and there are gases or pollutants in the tunnels The concentration is reduced, but with the operation of urban rail trains, traditional urban rail transit uses blowers and exhaust fans to solve the ventilation problem, but for the sake of air quality, fan ventilation is required for long-term ventilation without interruption, which leads to high ventilation costs and waste of energy. The traditional ventilation method still has the disadvantage of poor purification effect on microorganisms such as bacteria and viruses, which needs to be solved urgently

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