Natural gas hydrogen doping and mixing device

A natural gas hydrogen doping and mixing device comprises a mixing chamber, a natural gas connector and a hydrogen connector, the mixing chamber is communicated with the natural gas connector, the hydrogen connector is communicated with a gas ejector pipe, the gas ejector pipe is located in the mixing chamber, the axis of the gas ejector pipe coincides with the axis of the mixing chamber, and an opening of the gas ejector pipe is a horn mouth which is provided with an adjusting core. A core head of the adjusting core is conical and located in the center of an opening of the air spraying pipe, the adjusting core is fixed to the adjusting rod, one end of the adjusting rod and an adjusting core support form a sliding pair, the other end of the adjusting rod is connected with the translation power piece, and the adjusting core support is fixed to the inner wall of the mixing chamber. Compared with the prior art, the hydrogen doping and mixing device for the natural gas has the beneficial effects that hydrogen is