120阀低温紧急灵敏度低及常温下不安定原因初探

Discussion on Causes for Low Emergency Sensitivity at Low Temperature and Instability at Normal Temperature on the 120 Valve

针对 1 2 0阀在低温检测中紧急灵敏度低及常温运用中存在意外紧急现象 ,对 1 2 0紧急阀中的安定簧及逆流孔的搭配关系以及列车在线路上运行时的最不利情况进行了试验、分析 ,并提出了改进建议。

In view of the low emergency sensitivity at low temperature and the unexpected emergency in operation at normal temperature on the 120 valve,test and analysis are made on the arrangement relation between the stability spring and the reverse flow hole in group,as well as the most unfavorable conditions in operation of the train on track,and suggestions for improvement are given.