METHOD OF ASSEMBLING FRAME ASSEMBLY AND CENTRALISER Russian patent published in 2020 - IPC B23K37/53 B23K37/00 B29C33/30 

FIELD: machine building.

SUBSTANCE: method of assembling the insert assembly relates to a method for accurate assembly and centring of cylindrical elements of a tapping assembly without reducing gas pressure and clamping devices for these purposes and can be used in preparation for tie-ins without reducing gas pressure using such devices. Method of assembly of frame assembly includes screwing of centralizer thread part into threaded part of fitting, putting on to cylindrical housing of centralizer sealing gaskets, ball valve and sluice chamber, assembly of fitting fixtures, ball valve and sluice chamber by means of bolts attached to tightening semi-rings by means of welding, washers and nuts with their tightening with working force. Then the thrust nut is installed on the threaded part of the sluice chamber with provision of contact of the centring surface of the thrust nut with the centring surface of the centraliser and tightening of fixtures connecting the fitting, sealing gaskets, ball valve and sluice chamber is performed.

EFFECT: technical result is that when using the method of assembling the frame assembly, high accuracy of assembling the elements of the insert assembly and the required coaxiality of the assembled elements is provided.

1 cl, 5 dwg