METHOD OF CONNECTION OF PIPE LINES FOR TRANSPORTATION OF AGGRESSIVE LIQUIDS Russian patent published in 2000 - IPC

FIELD: pipe line transport; erection of pipe lines provided with protective lining. SUBSTANCE: pipe lines used for transportation of aggressive liquids are connected as follows: first adjacent ends of metal pipe lining are connected, then space between ends of pipes is filled with sealant and pipes are connected with the aid of outer sleeve which is crimped afterwards. Adjacent ends of lining are connected by bonding. Projections and grooves are made on inner surface of sleeve. Grooves of sleeve are filled with non-ferrous metal rings, adhesive and sealant. Wide projections are made on outer surface of sleeve according to grooves. Metal pipes are connected with lining by means of inner bush provided with pointed projections on outer surface. EFFECT: enhanced reliability at increased working pressure. 1 dwg