Gas-liquid two-phase mixed low-temperature nitrogen gas jet flow generation apparatus

The present invention discloses a gas-liquid two-phase mixed low-temperature nitrogen gas jet flow generation apparatus, which comprises a self-pressurization liquid nitrogen supply system, a high-pressure-resistant low-temperature soft pipe, a reciprocating low-temperature pressurization pump, a room-temperature nitrogen gas supply system, a high-pressure-resistant room-temperature soft pipe, an inner mixing chamber, an interception valve, a three-way valve and a spraying nozzle, wherein the self-pressurization liquid nitrogen supply system outputs low-pressure liquid nitrogen, the low-pressure liquid nitrogen is pressurized through the reciprocating low-temperature pressurization pump, the obtained high-pressure liquid nitrogen is output to the inner mixing chamber, the room-temperature nitrogen gas supply system outputs room-temperature and high-pressure nitrogen gas and conveys the high-pressure nitrogen gas to the inner mixing chamber, the high-pressure liquid nitrogen and the room-temperature and high-p