TESTING METHOD OF VACUUM PERFORMANCE FOR VACUUM INSULATION CRYOGENIC EQUIPMENT

Vacuum insulation cryogenic equipment performance directly affects the quality and longevity.Through the leak rate，leak-outgassing rate two key performance indicators to defect，and combined with some of the typical problems that appearred in the process of actual testing，some of the testing methods and proposed solution of vacuum insulation cryogenic equipment performance were analysed by using the theoretical and practical situation and feasibility of existing standards.In order to improve the accuracy and reliability of the testing，a vacuum insulation cryogenic equipment testing standards should be recommended，and the ways above can promote the development of vacuum insulation cryogenic equipment field.