Emergency Valve

原文（中国語）

The present disclosure provides an emergency valve, including: a valve body () comprising an emergency cavity (), a pressure increasing cavity () and an inflation cavity () which are spaced apart from one another, wherein an extension direction of the pressure increasing cavity () is the same as an extension direction of the inflation cavity (); an air inlet of the emergency cavity () is in communication with a train pipe (); the pressure increasing cavity () is provided with a first communication port, a second communication port and a relief port; the relief port of the pressure increasing cavity () is located between the first communication port of the pressure increasing cavity () and the second communication port of the pressure increasing cavity (); the first communication port of the pressure increasing cavity () is in communication with a brake cylinder (); and the second communication port of the pressure increasing cavity () is in communication with the emergency cavity (). The device increases the inflation speed of the train pipe, and achieves the aim of saving energy by utilizing the pressurized air in the brake cylinder.