The utility model discloses a kind of gas
active safety defense devices, it is related to gas
safety equipment technical field, including shell, one side in the shell is equipped with air inlet
pipe, another side in the shell is equipped with air outlet
pipe, one end of the air inlet
pipe and the air outlet pipe respectively with
gas pipeline air inlet pipe and
gas pipeline air outlet pipe intercommunication after penetrating out the shell, another end of the air inlet pipe and the air outlet pipe is communicated with
gas meter after penetrating out the shell;Valve is installed on the air inlet pipe, valve front
pressure sensor and valve rear
pressure sensor are respectively installed on the air inlet pipe located the two sides of valve before and after;Flow sensor is installed on the air outlet pipe.The utility model gas
active safety defense device can detect the data of
gas pipeline in real time, can determine that gas pipeline under pressure,
overpressure, gas over flow, leakage, earthquake and other abnormalities in time, and actively
cut off gas pipeline, greatly improve the security of gas use.