HEAT-INSULATING DEVICE FOR CRYOGENIC OBJECTS AND METHOD FOR MAKING A PACKAGE OF COOLED RADIATION SCREENS FOR SUCH DEVICE

摘要

The invention relates to cryogenic technology. A heat-insulating device for cryogenic objects consists of a package of cooled radiation screens (2) which are arranged coaxially to a cryogenic object - a receptacle (4) and which are provided with heat-exchange channels (6) interconnecting through connection tubes (7). The whole package of the screens (2) is a one-piece part and the channels (6) are provided inside the bodies of the screens (2). The package of the screens (2) is made of a multilayer strip on which is imprinted the "pattern" of the whole unfolded package of the screens (2). A system of the channels (6) and of the connection tubes (7) is arranged between the layers of the strip in accordance with the "pattern". Then the strip is cut out and the package is formed of it, the screens (2) being located coaxially and the tubes (7) being located between the screens. The heat-insulating device is intended primarily for use in tanks for keeping cryogenic liquids.