Waterproof air inlet structure of roof of passenger train

Abstract

The invention relates to a waterproof air inlet structure of a roof of a passenger train. The waterproof air inlet structure comprises an air inlet and an air outlet. The air inlet is arranged on the roof, the air outlet is positioned in the train and is communicated with the air inlet, an air inlet cover is fixed to the roof and is positioned on the outside of the air inlet, an air inlet barrel is connected to the upper end of the air inlet by a flange and is positioned in the air inlet cover, a plurality of air inlet grooves are formed in side walls of the air inlet cover, arc-shaped flow guide plates are arranged on the side walls of the air inlet cover, inlet air flows through the air inlet grooves from the oblique lower direction and then flows into the air inlet cover under the guidance action of the arc-shaped flow guide plates, and a water barrier which is arranged around the peripheral wall of the air inlet barrel is fixed into the air inlet cover. The waterproof air inlet structure has the advantages that the inside of the waterproof air inlet structure is in a labyrinth structural design, a three-layer waterproof measure is implemented from the air inlet grooves of the air inlet cover, the speed and the direction of the inlet air are changed owing to the labyrinth structure and dimensional combination, accordingly, the inlet air flows into the air inlet barrel in a wavy manner, and is separated from rainwater by the aid of the gravity of the rainwater and centrifugal force, and the rainwater is prevented from flowing into a passenger compartment; as shown by rainwater tests according to requirements of the TB / T1802-1996 Railway Vehicle Leakage Rain Test Methods, the waterproof requirement is completely met by the waterproof air inlet structure.

Description

technical field [0001] The invention relates to a waterproof air intake structure for the roof of a railway passenger car, and belongs to the technical field of rainproofing of railway passenger cars. Background technique [0002] With the rapid development of my country's railway passenger car technology in recent years, domestic railway passenger cars have been favored by overseas markets. However, the diversity of foreign climatic environments also poses new challenges for my country's passenger car design. For example, a passenger car in a South American country is the first foreign railway large-air volume forced ventilation passenger car developed in my country, and the air intake volume of each car is about 17,400 m 3 / h, the roof intake of high air volume increases the difficulty of preventing rainwater from entering. Moreover, the bus operating range is in a rainy area, with an annual rainfall of nearly 1000mm, and the seasonal distribution is even, so how to water...

AI Technical Summary

Problems solved by technology

Experiments show that the defense effect of this structure is not ideal after being used on the air intake cover of rail vehicles, and it cannot meet the design requirements of large air volume forced ventilation passenger cars

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