D-shaped inner cylinder chimney supporting device

The invention relates to a D-shaped inner cylinder chimney supporting device, and belongs to the technical field of chimney design and construction. The device comprises two truncated cone shells, a box beam and truncated cone shell tangential connecting plates, wherein the box beam is arranged between the two truncated cone shells sleeving the peripheries of two D-shaped inner cylinder chimney bodies, and the truncated cone shell tangential connecting plates for connecting the two truncated cone shells into the long circular truncated cone shells are arranged at the intersection of the two truncated cone shells. According to the D-shaped inner cylinder chimney supporting device, an inner cylinder supporting device body which saves cylinder wall materials and improves reliable supporting of a D-shaped inner cylinder body is provided, the problems of larger internal stress and local instability caused by uneven stress of vertical supporting of the smoke exhaust inner cylinder body are solved, long-term safe an