PREPARATION OF HOMOGENEOUS GAS MIXTURES WITH SF6

摘要

PURPOSE: Preparation of homogeneous gas mixtures with sf6 is provided. CONSTITUTION: Homogeneous compressed gas mixtures with SF6 and a gas with a density at least 4 g/l lower can be prepared by using a mixing station with at least the following elements: a gas premixer in which the separate gases are brought together; a static mixer and/or a buffer tank connected thereto; a compressor connected to the buffer tank or static mixer; and when a buffer tank is used, a return line from the compressor output to the buffer tank. Mixtures of SF6 and N2, useful for example as insulating gas for current-conductive underground cables, can be produced by this process, which is capable of processing large flow rates. Mass flowmeters ensure high precision and reliability. Also disclosed is a mobile mixing station for implementing this process.