Snow making device of bogie accumulated snow icing wind tunnel test system

Abstract

The invention discloses a snow making device of a bogie snow accumulation and icing wind tunnel test system. The snow making device comprises an axial flow fan arranged on a power section of the bogie snow accumulation and icing wind tunnel test system. A surface air cooler is arranged in front of the air inlet end of the axial flow fan, and a plurality of supercooled water nozzles are arranged on the periphery of the air outlet end of the axial flow fan in the circumferential direction of the axial flow fan. According to the snow making device, the axial flow fan is arranged, the surface air cooler is arranged in front of the air inlet end of the axial flow fan to cool airflow, and low-temperature airflow is formed and enters the axial flow fan; multiple supercooled water nozzles are arranged on the periphery of the air outlet end of the axial flow fan in the circumferential direction of the axial flow fan, supercooled water sprayed out of the supercooled water nozzles forms ice and snow when encountering low-temperature airflow, and compared with the mode that snow is made outside a wind tunnel and then conveyed into the wind tunnel, the ice and snow can be evenly mixed with the airflow; in addition, the supercooled water nozzles are circumferentially arranged along the periphery of the air outlet end of the axial flow fan, so that ice and snow are formed in the cross section area of the whole wind tunnel flow channel, and the mixing uniformity of the ice and snow and airflow is improved.

Description

technical field [0001] The invention relates to the technical field of rail vehicles, in particular to a snowmaking device of a bogie snow and icing wind tunnel test system. Background technique [0002] As an important national infrastructure, rail transit is in the backbone position in the comprehensive transportation system and has an important impact on social and economic development. The rail transit system has significant advantages such as low energy consumption, small footprint, and light environmental pollution, and stands out among many transportation methods. [0003] my country's regional span is large, and rail trains need to adapt to complex and changeable operating environments such as strong sandstorms and strong snowstorms. In the cold winter, some areas such as Northeast my country, northern Xinjiang and the Qinghai-Tibet Plateau have heavy snowfall, which brings a series of special problems to the construction and operation of rail transit. Among them, ...

AI Technical Summary

Problems solved by technology

[0005] The existing snow and icing low temperature wind tunnel test system in the bogie area of ​​the train has uneven mixing between ice, snow and airflow, which cannot make the ice, snow and airflow form a uniform wind blowing snow, cannot truly simulate the meteorological environment of wind blowing snow, and cannot guarantee steering Accuracy of snow and icing test results in shelf area

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