D-shaped inner barrel chimney supporting device

The utility model relates to a D-shaped inner barrel chimney supporting device, and belongs to the technical field of chimney design and construction. The device comprises two truncated cone shells, abox beam and a truncated cone shell tangential connecting plate, a box beam is arranged between the two frustum shells arranged on the peripheries of the two D-shaped inner barrel chimneys in a sleeving manner; a truncated cone shell tangential connecting plate used for connecting the two truncated cone shells into a long circular truncated cone shell is arranged at the intersection of the two truncated cone shells. According to the inner barrel supporting device, materials on the barrel wall are saved, reliable supporting of the D-shaped inner barrel is improved, and the problems that due tothe fact that vertical supporting is not uniform in stress, the smoke exhaust inner barrel bears large internal stress, and local instability is caused are solved. The long-term safe and reliable operation of the inner barrel