Airtight performance keeping design method based on full life cycle

Abstract

The invention provides an airtight performance maintenance design method based on a full life cycle. The method comprises the following steps: acquiring operation maintenance data and dynamic test data of a high-speed train; according to the internal and external pressure data of the high-speed train in different operation environments, determining the dynamic air tightness index of the high-speed train in different operation environments, and further determining the attenuation law of the dynamic air tightness index of the high-speed train in different operation environments along with the operation mileage of the high-speed train and the maintenance frequency of the high-speed train; and according to the user ear comfort data corresponding to the high-speed train in different operation environments, determining an air tightness index critical value of the high-speed train in different operation environments, and further determining a maintenance standard and maintenance time corresponding to the high-speed train. According to the airtight performance keeping design method based on the full life cycle, the airtight performance of the high-speed train can be effectively guaranteed.

Description

technical field [0001] The invention belongs to the technical field of high-speed trains, and more specifically relates to a design method for maintaining airtight performance based on the whole life cycle. Background technique [0002] The definition of train air tightness indicates the ability of high-speed train car body structure and components to isolate or slow down the pressure change outside the car into the car. Due to the increase of the train speed, when the open lines of the train cross and pass through the tunnel, severe pressure fluctuations are generated outside the train, and the pressure fluctuation outside the train is transmitted into the train, causing changes in the pressure inside the train, causing discomfort to the ears of the drivers and passengers in the train. In severe cases, symptoms such as tinnitus and dizziness may occur. In order to ensure the comfort of the passengers and passengers in the train, the high-speed train adopts an airtight car ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve this problem, in the prior art, the test standard of static pressure relief of the whole vehicle is used as the basis for judging the air tightness of high-speed trains, but there are various factors affecting the air tightness of high-speed trains, and the judging methods of the prior art are not accurate enough. Therefore, it is impossible to effectively guarantee the airtight performance of high-speed trains.

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