CONVECTIVE SHAFT OF BOILER WITH NODE FOR SEALING OF PASSAGE OF VERTICAL PIPES Russian patent published in 2019 - IPC F22B37/20 

FIELD: machine building.

SUBSTANCE: invention relates to the power mechanical industry. Convective shaft of boiler is made of membrane tube screens with unit for compaction of passage of vertical pipes through ceiling screen in form of box formed by metal sheets, which is tightly connected to ceiling screen and filled with heat-insulating material. Box contains sheets perforated for vertical pipes, one of which is tightly connected to vertical pipes, at that the upper sheet is tightly connected to the box sheets, and the lower sheet is tightly connected to the ceiling screen. Cartridge of sealing assembly has cantilever parts formed by side, end, bottom sheets and perforated upper sheet. Side and lower sheets of cantilever part are tightly connected to side screens of boiler. Side sheets of the box form angle of 0–30 degrees between each other and have angle of 75–90 degrees with a ceiling screen, have a shaped contour in connection with ceiling and side screens repeating the shape of screens and transitions from the ceiling to the side screens.

EFFECT: invention is aimed at increasing the carrying capacity of the design of the seal assembly and ensuring its integrity.

6 cl, 4 dwg