CONNECTION ASSEMBLY OF PIPES OF DIFFERENT DIAMETERS Russian patent published in 2017 - IPC F16L13/00 

FIELD: construction.

SUBSTANCE: connection assembly of pipes of different diameters includes the ends of pipes of larger and smaller diameter on which the corresponding connecting parts are fixed, connected by coupling bolts, the connecting piece of the pipe of larger diameter represents a butt plug with openings for the passage of the coupling bolts connected to the end of the pipe of larger diameter. The connecting piece of a pipe of smaller diameter is made in the form of a support ring. The base of the support ring has a cylindrical belt with the outer diameter, which is reduced in height from its top boundary to the upper butt of the support ring. The support ring with its base outside is put on the end of the pipe of smaller diameter by shrinkage fit flush against its butt, which is connected by welding to the support ring base. On outer surface contour of the support ring base, sockets for a spanner with openings coaxial to the openings in the butt plug are made. The coupling bolts are inserted from the inside of the butt plug, and the heads are attached to it by welding. The outer diameter of the support ring is determined depending on the current coordinate from the upper boundary of the cylindrical belt from the table.

EFFECT: invention allows to improve the reliability of the connection and its strength.

1 tbl, 3 dwg