Control method and system for preventing pressure jump of train passenger compartment in long tunnel

Abstract

The invention discloses a control method and system for preventing pressure jump of a train passenger compartment in a long tunnel. The control method for preventing pressure jump of the train passenger compartment in the long tunnel comprises the steps of obtaining a first platform where a train currently stops and a second platform where the train is going to head for before the train is dispatched from the first platform; when it is determined that there is a ventilation shaft between the first platform and the second platform according to preset platform ventilation shaft information, obtaining position information of the ventilation shaft from the preset platform ventilation shaft information; after the train is dispatched from the first platform, determining a distance between the train and the ventilation shaft according to the position information of the ventilation shaft and the running distance of the train from the first platform; when the train does not run to the ventilation shaft and the distance is equal to a preset first distance, reducing an air door opening of air exhaust air door of an air conditioning system in the train; and when the train leaves away from theventilation shaft and the distance is equal to a preset second distance, recovering the air door opening of the air exhaust air door. According to the control method for preventing pressure jump of the train passenger compartment in the long tunnel, it can be seen that the changing rate of air pressure in the passenger compartment of the train is reduced, and the eardrum comfort levels of passengers are enhanced.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to a control method and system for preventing sudden change of pressure in a train passenger compartment in a long tunnel. Background technique [0002] At present, when the train travels in a long tunnel at high speed, the air pressure in the tunnel will increase sharply due to the piston effect. In the prior art, in order to release the wind force driven by the train when the piston moves in the tunnel, a ventilation shaft is usually set in a long tunnel. Therefore, when the train passes through the position of the ventilation shaft, the pressure of the tunnel will decrease sharply. The internal air pressure will be quickly discharged through the fresh air door, waste door (collectively referred to as the exhaust air door) and the gap of the train in the air conditioning system, resulting in a large change rate of air pressure in the passenger compartment of the train (generally...

AI Technical Summary

Problems solved by technology

In the prior art, in order to release the wind force driven by the piston movement of the train in the tunnel, ventilation shafts are usually set in longer tunnels, so the pressure in the tunnel will decrease sharply when the train passes through the position of the ventilation shaft. The internal wind pressure will be quickly discharged through the air-conditioning system's new air door, waste discharge door (collectively referred to as the exhaust air door) and the train gap, resulting in a large change rate of the air pressure in the passenger compartment of the train (generally exceeding 800par / 3s), making passengers very uncomfortable in the eardrum

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