Mixed fuel gas conveying adjustment system and adjustment method

The invention discloses a mixed fuel gas conveying adjustment system and method, and belongs to the field of energy conveying adjustment. The system comprises a fuel gas mixing unit, a conveying unit and terminal equipment which sequentially communicate; the terminal equipment is connected with a first analysis unit; and the first analysis unit is connected with the fuel gas mixing unit through a controller. According to the system, a sampling analysis device is arranged after a terminal device and fuel gas are mixed, hydrogen embrittlement resistance of metal components of a tail end process device is analyzed, the hydrogen concentration upper limit value of safe mixed gas of the process device is obtained, the opening degree of an adjustment valve is adjusted, and then the safe mixing proportion of hydrogen-natural gas is adjusted; and the mixed gas is corrected through negative feedback regulation until a safe and stable conveying state is achieved, so that the gas use safety of downstream users is guarant