MEMBRANE SCREEN OF STEAM BOILER Russian patent published in 2018 - IPC F22B37/10 

FIELD: machine building.

SUBSTANCE: invention relates to the field of power engineering, in particular to the design of steam boilers. Diaphragm screen of the steam boiler contains parallel pipes, connected by means of webs-spacers or welded together lateral fin fins. Bridges between the tubes are provided with additional elements of planar or shaped cross section connected perpendicular to the axial plane of the screen and parallel to the axis of the pipes. Additional elements are made in the form of plates perpendicular to the plane of the screen, or shaped profiles (T-shaped, with welded to the plate Π-shaped, U-shaped or circular cross-section rod, an annular or rectangular tube or a rod of another cross-section). Additional elements are welded to each junction of the tube screen, through one or several jumper steps, depending on the flexural rigidity of the screens and the distance between the stiffeners. Additional elements welded to the jumper tubes of the screen can be simultaneously welded to the fasteners of the screen stiffeners.

EFFECT: technical result consists in increasing the strength and flexural rigidity of membrane screens and reducing the stresses arising in these screens, as well as reducing the metal capacity of the structure.

10 cl, 9 dwg