Power plant hazardous gas sampling device

The invention relates to the technical field of gas sampling, and discloses a power plant hazardous gas sampling device, which comprises a sampling unit, a cylinder body, a motor arranged on the left side of the cylinder body, an inflating part arranged in the middle of the cylinder body, a connecting pipe arranged on the right side of the cylinder body, two groups of valve parts arranged on the connecting pipe, and a gas outlet pipe arranged in the middle of the connecting pipe, and the collecting unit comprises a mounting frame arranged on the right side of the cylinder body, a clamping component arranged on the mounting frame and a collecting component arranged on the right side of the clamping component. According to the power plant hazardous gas sampling device, the motor drives the cam to drive the circular push plate to perform reciprocating pushing up and down at the same time, so that gas can be sampled at the two ends of the cylinder body at the same time, and is finally collected into the collectin