High-speed thermal circulation air curtain apparatus for tunnel portals

Abstract

The invention relates to fixed buildings, in particular to a tunnel portal high speed heat cycle wind curtain device which is suitable for track traffic main lines of high latitude and cold areas and inlet and outlet line portals. The device is provided with a hot air curtain which is injected at a high speed at the tunnel portal and forms a thick air curtain wall at the tunnel portal so as to stop the intrusion of severe cold air outside a tunnel, and reduce heat exchange. When the tunnel is a parallel double-portal tunnel, a communication channel and a bypass channel are added in the tunnelpartition wall so as to effectively lead the piston wind of a train. At the same time, a cycle wind channel, a track passing channel, a ventilation chamber, and the like are arranged so as to achievethe cycle of hot air, effectively reduce heat requirements of adjacent stations, stabilize the station temperature, and reduce freezing phenomenon generated by cold and heat intersection of the portal, thereby making traffic safe.

Description

technical field [0001] The invention relates to fixed buildings, in particular to a high-speed heat-circulating air curtain device for tunnel entrances suitable for the entrances of rail transit main lines and entry and exit lines in high-latitude alpine regions. Background technique [0002] In the subway system, when the underground section extends from the underground to the ground, due to the influence of the piston wind of the train running, the train enters and exits the tunnel entrance, or due to the influence of the train running in the adjacent tunnel, there is an airflow exchange between the tunnel entrance and the outdoor air. The highest instantaneous airflow in the tunnel where the train runs directly can exceed 15m / s, and the wind speed can reach several meters / second due to the influence of adjacent sections. [0003] In high-latitude and high-cold regions like Harbin, when the outdoor temperature is extremely low (for example, the winter heating temperature i...

AI Technical Summary

Problems solved by technology

At the same time, under normal circumstances, the internal temperature of the subway is kept above 5°C. On the interface between cold and heat at the entrance of the tunnel, the airflow frequently enters and exits, causing the tunnel entrance to freeze, which affects driving safety and wastes energy.

[0004] In my country, due to the fact that there are few large cities in the high-latitude alpine zone, the subway systems in Shenyang, Changchun, Harbin and other places are still planning or under construction, and there is no existing technology to solve the problem in a targeted manner.

Images