And high-pressure gas pipeline leaks and ignites to form jet fire test device

The utility model relates to a device for testing jet fire formed by leakage ignition of a high-pressure gas pipeline. The device comprises a gas source system, a high-pressure gas storage system, a pressure stabilizing system, a downstream pipeline, a combustor 50, a safety protection system, a data acquisition system and a flame characteristic representation expansion module. On the premise of determining the gas critical pressure ratio at the nozzle of the combustor, a pressure and temperature quantitative relation is established according to the pressure and temperature at the nozzle, andthe flow velocity at the nozzle is calculated. The method has the advantages that 1) the method can be used for researching the complex dynamic process of forming the jet fire by the leakage ignitionof the high-pressure gas pipeline under complex conditions, and can accurately predict the nozzle flow rate, the jet fire geometrical characteristics, the jet fire hazard radius and the like; and 2) the whole device is based o