120型货车空气控制阀的研究试验

Research and Development of the Air Brake Control Valve for 120-type Freight Cars

本文主要叙述了120阀整个研制过程,将一系列室内外列车静置及运行等情况作了概要介绍,并对试验结果加以分析。120阀其主要性能已达到80年代水平:常用制动波速225～255m/s;紧急制动波速270～280m/s;缓解波速:180～200m/s。并且能与国内旧型制动机无条件混编运用。

This article descreibes the whole process of research and development of the 120 type control valve, The test results of this valve abtained in the laboratory and the field are introduced and analyzed. The main performance criteria of the valve have reached the 1980s world standard: service propagation speed 225--255m/s; emergency propagation speed 270—280m/s; release propagation speed 180—200m/s. The 120 control valve is also compatible with the existing, triple valve and distributing valve used on Chinese railroads.