METHOD OF TRANSPORTATION OF CRYOGENIC LIQUIDS AND PIPE LINE FOR REALIZATION OF THIS METHOD Russian patent published in 2000 - IPC

FIELD: pipe line transport; main pipe lines for transportation of cryogenic media. SUBSTANCE: method of transportation of cryogenic liquids through two-pipe line includes formation of margin length of pipe line, cooling the inner pipe to temperature of pumping the product, pumping the product to be handles and control of temperature and pressure of pipe line. After the required conditions have been created in inner pipe, rarefaction is formed in inter-pipe space. Pipe line for transportation of cryogenic liquids consists of two pipes mounted concentrically fixed supports and temperature and pressure control units. Outer and inner pipes are mounted movably relative to each other; outer pipe is provided with two branch pipes; hermetic chambers are mounted at two supports of each linear section of pipe line; length of these chambers is equal to longitudinal displacement of linear section at working temperature; chamber are connected with outer pipe by means of telescopic compensators. EFFECT: avoidance of transfer of heat from inner pipe; enhanced operational reliability. 3 cl, 1 dwg