Insulating cartridge

Abstract

The invention relates to an insulating cartridge for use as part of a pipe jacket insulation, comprising a substantially closed sheet metal casing ( 5 ) which completely encloses an insulating material filling ( 7 ). The insulating cartridge ( 2 ) according to the invention is characterized in that the insulating material filling ( 7 ) comprises a silicate aerogel.

1 . An insulating cartridge as part of a jacket of devices of a steam generator which are under media pressure, for example as pipe casing insulation, with an essentially closed sheet metal housing which completely encloses an insulating material filling, characterized in that the insulating material filling comprises an aerogel. 
     
     
         2 . The insulating cartridge as claimed in  claim 1 , characterized in that the insulating material filling comprises an inorganic areogel. 
     
     
         3 . The insulating cartridge as claimed in  claim 1 , characterized in that the insulating material filling comprises a silicate aerogel. 
     
     
         4 . The insulating cartridge as claimed in  claim 1 , characterized in that the insulating material filling comprises an aerogel as a granulate, preferably with a mean grain size of 0 to 4 mm. 
     
     
         5 . The insulating cartridge as claimed in  claim 1 , characterized in that the insulating material filling comprises at least one aerogel molding. 
     
     
         6 . The insulating cartridge as claimed in  claim 5 , characterized in that the molding is adapted to the configuration of the preferably dimensionally stable sheet metal housing. 
     
     
         7 . The insulating cartridge as claimed in  claim 1 , characterized in that the aerogel has increased infrared reflectivity. 
     
     
         8 . The insulating cartridge as claimed in  claim 7 , characterized in that the insulating material filling comprises graphite powder and/or metal oxide powder. 
     
     
         9 . The insulating cartridge as claimed in  claim 7 , characterized in that the insulating material filling comprises aerogel and graphite power and/or metal oxide powder in a homogeneous mixture, the fraction of graphite powder and/or metal oxide powder being between 1.5 and 4.5 ma %. 
     
     
         10 . The insulating cartridge as claimed in  claim 1 , characterized in that it has an approximately C-shaped cross section and is provided with fastening means by which insulating cartridges designed complementarily to one another can be assembled to form an essentially closed pipe casing.