Multi-path mixed sampling device for flue gas

The utility model discloses a flue gas multi-path mixed sampling device which comprises a plurality of sampling probes, probe heaters, compressed air mixing pipes, air heaters, a mixing box and a control unit, wherein the number of the probe heaters is the same as that of the sampling probes; the number of the compressed air mixing pipes is the same as that of the sampling probes; when the flue gas sampling device works, the three sampling probes sample flue gas from a process pipeline at the same time, and the flue gas is sent into the mixing box after being treated respectively. After beingmixed by the heating mixer, the flue gas enters a CEMS flue gas pretreatment system to remove moisture and dust, and standard dry flue gas is fed into a gas analyzer to be subjected to gas component analysis. By improving multi-point sampling, the problem that CEMS measurement is not representative due to uneven distribution of flue gas in a flue is solved. 本实用新型公开了一种烟气多路混合取样装置，包括多个取样探头，数量与取样探头相同的探头加热器，数量与取样探头相同的压缩空气混入管，数