Safe and environment-friendly gas chromatography gas path system

The utility model discloses a safe and environment-friendly gas chromatography gas path system. Comprising a hydrogen steel cylinder A, a hydrogen steel cylinder B, a double-side switching control panel, a hydrogen alarm instrument, a temperature and humidity detection instrument, a hydrogen pipeline A, a pressure reducing valve A, a first high-pressure ball valve A, a high-pressure input diaphragm valve A, a second high-pressure ball valve A, a first check valve A, a hydrogen pipeline B, a pressure reducing valve B, a first high-pressure ball valve B, a high-pressure input diaphragm valve B, a second high-pressure ball valve B and a first check valve B, the device comprises an explosion-proof exhaust fan, a hydrogen filter, a nitrogen pipeline, a nitrogen master control valve, a nitrogen filter, an air pipeline, an air master control valve, an air filter, a GC host, a tail gas pipeline, a tail gas explosion-proof induced draft fan and a tail gas absorption tower. According to the system, the operation safety