Coolant tube

Abstract

A coolant tube with a tube has with a tube jacket formed of a plastic material that exhibits a high diffusion coefficient for gas and that contains at least one electrically conductive additive.

1 . A coolant tube comprising:
 a tube jacket having an interior channel therein configured to conduct an insulating oil therethrough; and   said tube jacket being comprised of a plastic material having a high diffusion coefficient for gas and containing at least one electrically conductive additive.   
   
   
       2 . A coolant tube as claimed in  claim 1  wherein said plastic material has a diffusion coefficient of at least approximately 3 m 2 /s for gas. 
   
   
       3 . A coolant tube as claimed in  claim 2  wherein said plastic material has a diffusion coefficient of approximately 14.37 m 2 /s for hydrogen. 
   
   
       4 . A coolant tube as claimed in  claim 1  wherein said plastic material is polytetrafluoroethylene. 
   
   
       5 . A coolant tube as claimed in  claim 1  wherein said plastic material is a composite material. 
   
   
       6 . A coolant tube as claimed in  claim 1  wherein said electrically conductive additive is at least one material selected from the group consisting of graphic powder and metal powder. 
   
   
       7 . A coolant tube as claimed in  claim 1  wherein said electrically conductive material is at least one material selected from the group consisting of graphite particles and metal particles. 
   
   
       8 . A coolant tube as claimed in  claim 1  wherein said electrically conductive material is at least one material selected from the group consisting of graphite fibers and metal fibers. 
   
   
       9 . A coolant tube as claimed in  claim 1  wherein said electrically conductive additive is formed as an electrically conductive wire woven material embedded in the plastic material. 
   
   
       10 . A coolant tube as claimed in  claim 1  comprising a protective jacket that covers at least a portion of an exterior of said tube jacket. 
   
   
       11 . A coolant tube as claimed in  claim 10  wherein said protective jacket is formed of a metallic woven material. 
   
   
       12 . A coolant tube as claimed in  claim 10  comprising an intermediate layer disposed between said exterior of said tube jacket and said protective jacket. 
   
   
       13 . A coolant tube as claimed in  claim 12  wherein said intermediate layer is comprised of a plastic woven material. 
   
   
       14 . A coolant tube as claimed in  claim 1  wherein said tube jacket has a channel diameter between approximately 4 mm and 50 mm. 
   
   
       15 . A coolant tube as claimed in  claim 1  wherein said tube jacket has a wall thickness between said channel and an exterior of said tube jacket in a range between approximately 0.2 mm and approximately 0.5 mm.