Gas sampling device

The embodiment of the utility model provides a gas sampling device, which belongs to the field of gas detection equipment and comprises a pressure regulating cylinder, a gas inlet nozzle and a gas outlet, the pressure regulating cylinder comprises a pressure regulating cavity and a piston connected in the pressure regulating cavity in a sliding manner; a push rod for regulating the position of thepiston is arranged at one end of the piston; the air inlet nozzle is communicated with the pressure regulating cavity, and a valve is arranged on the air inlet nozzle; and the air outlet is communicated with the pressure regulating cavity and is provided with a valve. According to the utility model, the measurement is reduced after the gas pressure is reduced, the condition that the detection equipment is damaged due to overlarge pressure is avoided, the operation is simple, and the problem that the detection equipment in the measurement chamber is easy to damage due to compression in the prior art is solved. 本实用新型实施