Air source device for rail vehicle and method for improving its exhaust quality

Abstract

The present invention relates to an air source device for a rail vehicle and a method for improving its exhaust quality, wherein the air source device for a rail vehicle includes a sequentially connected compressor unit, a drier and a precision filter, between the compressor unit and the drier There is a secondary cooling device connected between them. The secondary cooling device includes a box body. A cooling radiator and a cooling nozzle are arranged in the box body. air inlet connection. The inlet end of the refrigerating spray pipe can be connected with the air outlet end of the compressor unit in an on-off manner, and the refrigerating spray pipe can form cold air from part of the compressed air produced by the compressor unit and spray it into the casing. The invention can effectively reduce the exhaust temperature of the compressor unit, increase the filtering efficiency and filtering precision of the drier and the precision filter, and improve the exhaust quality of the wind source device.

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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