CRYOGENIC PIPE LINE Russian patent published in 1998 - IPC

FIELD: mechanical engineering; pipe line transport for hydrogen-containing cryogenic fluids, such as liquefied natural gas, hydrogen, etc. SUBSTANCE: cryogenic pipe line is assembled from coaxially fitted pipes with vacuum space between them. Vacuum space is divided into three sections and is filled with multi- layer vacuum insulation and devices for maintenance of vacuum in insulation. Innovation of invention consists in availability of inert gas bottles, for example, nitrogen bottles located in vacuum sections of cryogenic pipe line. Each bottle is provided with throttle fitted in outlet pipe union and tight blank. Each bottle is provided with bracket secured on it for holding thermochemical sensor mounted through heat-insulating gasket. This sensor is connected with power member engageable with tight blank bottle. Thermochemical sensor generates heat when it is in contact with hydrogen-containing medium at rather low partial pressures. EFFECT: enhanced efficiency. 4 cl, 2 dwg