Wind source device for railway vehicle and method for improving exhaust quality of wind source device

Abstract

The invention relates to an air source device for a railway vehicle and a method for improving the exhaust quality of the air source device. The air source device for the railway vehicle comprises a compressor unit, a dryer and a precision filter which are connected in sequence, wherein a secondary cooling device is connected between the compressor unit and the dryer; the secondary cooling device comprises a box body; a cooling radiator and a refrigeration spray pipe are arranged in the box body; and the air inlet end and the air outlet end of the cooling radiator are connected with the air outlet end of the compressor unit and the air inlet end of the dryer respectively. The air inlet end of the refrigeration spray pipe can be connected with the air outlet end of the compressor unit in an on-off mode, and the refrigeration spray pipe can enable part of compressed air generated by the compressor unit to form cold air and spray the cold air into the box body. The exhaust temperature of the compressor unit can be effectively reduced, the filtering efficiency and the filtering precision of the dryer and the precision filter are improved, and the exhaust quality of the air source device is improved.

Description

technical field [0001] The invention relates to the technical field of rail transit vehicles, in particular to an air source device for rail vehicles and a method for improving the exhaust quality thereof. Background technique [0002] The air source device is a key component to provide clean compressed air for rail transit vehicles. The compressed air produced by it is not only supplied to the vehicle air brake system, but also supplied to the train vehicle's bow lifting system, sand spreading system, electro-pneumatic control system and vehicle air. Auxiliary wind equipment such as springs. The safety and reliability of rail transit vehicles have extremely high requirements on the air quality (water, oil, dust) of the compressed air provided by the wind source device. The air source device usually consists of a compressor unit, a dryer, a precision filter, a safety valve, etc. Among them, the joint action of the dryer and the precision filter keeps the dust, water and oi...

AI Technical Summary

Problems solved by technology

Based on the above analysis of the working characteristics of the compressor unit and the dryer, problems such as liquid oil or water drop pollution of the downstream wind equipment and serious water accumulation in the brake air cylinder are likely to occur in hot and humid regions or seasons

The existence of liquid oil or water will affect the normal operation of the brake valve and affect the driving safety. At the same time, it will also reduce the service life of the metal parts or rubber parts of the valve body and increase the cost of use.

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