Fractional distillation type gas sampling device

The utility model discloses a fractional distillation type gas sampling device which comprises a heat exchanger with one or more groups of tubes, and guide sheets are arranged in the tubes. The fractional distillation type gas sampling device further comprises a decoking mechanism with an arc-shaped guide decoking head. The fractional distillation type gas sampling device is large in heat exchangearea and high in heat exchange efficiency, the surface tension of liquid is effectively overcome, and a liquid column is prevented from being formed; through the combination with the decoking mechanism, the fractional distillation type gas sampling device not only has a good decoking effect, but also effectively avoids the phenomenon that the decoking head is stuck, and realizes an automatic cleaning function. 本申请公开了一种分馏式气体取样装置，其包括具有一组或更多组列管的换热器，其中在所述列管内设置有导向片。所述分馏式气体取样装置还包括具有圆弧形导向的清焦头的清焦机构。该分馏式气体取样装置换热面积大，换热效率高，且有效克服液体表面张力，避免形成液柱；通过其与清焦机构组合，该分馏式气体取样装置不仅清焦效果好，还有效地避免了清焦头卡死现象，实现了自动清理功能。