Hot gas seal

Abstract

An inventive hot gas seal comprises a sealing body and means for allowing a cooling fluid, preferably cooling air, to flow through the interior of the sealing body. Such a hot gas seal can be effectively cooled by guiding a cooling fluid through the interior of the sealing body.

1 . A hot gas seal comprising a sealing body and means for allowing a cooling fluid to flow through the interior of the sealing body.  
   
   
       2 . The hot gas seal claimed in  claim 1 , in which at least one cooling channel extending through the interior of the sealing body is formed as said means for allowing a cooling fluid to flow through the interior of the sealing body.  
   
   
       3 . A hot gas seal which comprises a sealing body, the sealing body being shaped in a tube like manner such that it comprises a generally circumferential portion and an interior space surrounded by the circumferential portion which defines a cooling channel for allowing a cooling fluid to flow through the interior of the tube like shaped sealing body.  
   
   
       4 . The hot gas seal as claimed in  claim 1 , in which the sealing body is made from a porous material the pores of which are interconnected so that they form said means for allowing a cooling fluid to flow through the interior of the sealing body.  
   
   
       5 . The hot gas seal as claimed in  claim 4 , in which the porous material is an elastic material.  
   
   
       6 . The hot gas seal as claimed in  claim 5 , in which the elastic material is a ceramic material.  
   
   
       7 . The hot gas seal as claimed in  claim 5 , in which the elastic material is a metal foam.  
   
   
       8 . The hot gas seal as claimed in  claim 5 , in which the elastic porous material is a polymer material.  
   
   
       9 . A hot gas seal assembly comprising a hot gas seal which comprises a sealing body in which at least one cooling channel extending through the interior of the sealing body is formed as a means for allowing a cooling fluid to flow through the interior of the sealing body and which further comprises means arranged outside of the hot gas seal for channeling a cooling fluid flow at least partly through the cooling channel of the hot gas seal.  
   
   
       10 . The hot gas seal assembly claimed in  claim 9 , in which the means for channeling the cooling fluid through the cooling channel are designed such that a high static pressure is built up in front of them which channels the cooling fluid at least partly through the cooling channel.  
   
   
       11 . The hot gas seal assembly claimed in  claim 10 , in which a fixing bolt for fixing a heat shield element is used for building up said high static pressure.  
   
   
       12 . The hot gas seal assembly claimed in  claim 9 , comprising a means arranged outside of the hot gas seal for guiding the cooling fluid which has flown through the cooling channel back into the cooling fluid flow.  
   
   
       13 . The hot gas seal assembly claimed in  claim 12 , in which the mans for guiding the cooling fluid back into the cooling fluid flow are designed such that a high static pressure is built up in front of them which guides the cooling fluid back into the cooling fluid flow.  
   
   
       14 . The hot gas seal assembly claimed in  claim 13 , in which a fixing bolt for fixing a heat shield element is used for building up said high static pressure.