在铁路系统中，各维修厂、段在检修前要进行蒸汽加热清洗配件和阀体表面的油垢和尘埃．这种清洗设备大多是将锅炉产生的高压饱和蒸汽直接通入水中进行加热交换的一种方法．由于这种方法简单易行，热效率高，因此广泛地应用在铁路车辆厂、车辆段、机务段等部门中．但这种方法在 In the railway system, the repair shop, paragraph before the steam heating to clean the parts and valve body surface grease and dust. Most of this cleaning equipment is a method of heating and exchanging the high-pressure saturated steam generated by the boiler directly into the water. Because of this method is simple, high thermal efficiency, it is widely used in railway vehicles factory, depot, locomotive depot and other departments. But this method is here