Dual-pump flow-equalizing flue sampling device and sampling method

The invention particularly discloses a dual-pump flow-equalizing flue sampling device and a sampling method. The dual-pump flow-equalizing flue sampling device comprises a flue mixing tank, wherein a flue sampling gun and a flue lead-out pipe are arranged on the flue mixing tank and communicated with the flue mixing tank; the outlet end of the flue lead-out pipe is connected with a pump I, and a branch connected with a flue analyzer is also led out from the flue lead-out pipe; one end, communicated with the flue mixing tank, of the flue sampling gun is provided with a throttling device, and a filter is also arranged on the flue lead-out pipe. With the adoption of the dual-pump flow-equalizing flue sampling device and the sampling method, the flue flow of each measurement hole in a single sampling gun is equalized, and the accuracy of flue oxygen measurement is improved.