Cold cylinder telescoped expansion natural gas drain pot

The utility model relates to a cold cylinder telescoped expansion natural gas drain pot, which mainly solves the problems that the existing natural gas drain pot has poor effect in separating the substance with high solidifying point. The cold cylinder telescoped expansion natural gas drain pot is characterized in that: an intake port (2) and an air outlet (3) are respectively fixed on the upper-part side wall and the top of the pot body (1); a bush (4) is fixed on the inner wall of the pot body (1), and a helical baffle (5) is fixed between the bush (4) and the pot body (1). The cold cylinder telescoped expansion natural gas drain pot has big heat transfer coefficient with the non-purified natural gas and is characterized in that the cold cylinder telescoped expansion natural gas drain pot has good effect in separating the high solidifying point substance of the natural gas.