Patent ID: 9421983
Filing Date: 2016-08-23
CPC Classification: B61B,E21F

Claim Text:
1. An active pressurization system utilizing an upper slab of a platform track area of an underground train station, characterized in that a track area of the underground train station, through which an express train and an accommodation train pass, is divided into an express-train running space and an accommodation-train running space by means of a partition wall, and a first and a second air-stream out- and in-flow space respectively linked to the express-train running space and the accommodation-train running space are formed on an upper slab of the train station, wherein the front end of the second air-stream out- and in-flow space is provided with a first port and a first damper, while the rear end is provided with a second port and a second damper, the second air-stream out- and in-flow space is provided with a third port for venting of the accommodation-train running space, and the first air-stream out- and in-flow space is provided with a fourth port for venting of the express-train running space, wherein when an express train is running, a control panel that receives sensing signals input from pressure sensors for sensing pressure ensures that, on the accommodation-train running space where there is no accommodation train waiting, the first and second ports are closed and the first and second dampers are open and the third port is open and on the express-train running space the fourth port is open, while on the accommodation-train running space where there is an accommodation train waiting, the first and second ports are open and the first and second dampers are closed and an air supplying and venting fan is driven in such a way as to supply air to the accommodation-train running space where there is an accommodation train waiting.