Connection between a metal liner and a composite structure in the mounting region of a tank

Abstract

A tank includes a tank body, a liner and a composite body spooled onto the liner, and at least one mounting, wherein the liner and the composite body are adhesively bonded together apart from in an annular joining region between the body of the tank and the mounting, surrounding the mounting.

1 . A reservoir comprising:
 a reservoir body;   a metallic liner;   a composite body wound around the liner; and   at least one base plate, equipped with a bead,   wherein at least one extremity of said at least one base plate comprises an annular junction region surrounding the bead of the base plate,   and wherein the liner and the composite body are glued to each other with the exception of said annular junction region surrounding the bead of the base plate, the composite body extending over the bead without being affixed to said bead.   
     
     
         2 . The reservoir of  claim 1 , comprising a general cylindrical shape with rounded bulging ends. 
     
     
         3 . The reservoir of  claim 1 , wherein the liner is connected to the base plate by welding or gluing. 
     
     
         4 . The reservoir of  claim 1 , wherein the composite body terminates at a level of the base plate in a roll resting on the bead. 
     
     
         5 . The reservoir of  claim 4 , wherein the base plate displays a cylindrical central neck on which a loop is mounted for retaining the roll. 
     
     
         6 . The reservoir of  claim 5 , wherein an annular joint is arranged between the loop and the bead. 
     
     
         7 . The reservoir of  claim 1 , wherein the bead comprises a periphery and a thickness decreasing toward the periphery. 
     
     
         8 . The reservoir of  claim 1 , wherein in the annular junction region, a layer of material of a low coefficient of friction is arranged between the liner and the composite body and between the bead and the composite body. 
     
     
         9 . The reservoir of  claim 8 , wherein the material of low coefficient of friction is PTFE tape. 
     
     
         10 . The reservoir of  claim 1 , wherein the liner comprises annealed aluminum. 
     
     
         11 . The reservoir of  claim 10 , wherein the liner comprises type 1050-O or 1100-O or 1050H111 aluminum. 
     
     
         12 . The reservoir of  claim 1 , wherein the liner comprises a first and second part, the second part forming an annular segment connecting the first part of the liner to the bead of the base plate, the composite body being glued to the first part of the liner, the gluing of the composite body extending over the second part of the liner in a zone overlapping the first and second parts of the liner. 
     
     
         13 . A process for fabrication of a reservoir, comprising:
 assembling a liner with a base plate;   winding a composite body on the liner; and   gluing the liner and the composite body to each other except in an annular region of a joint between the body of the reservoir and the base plate, surrounding the base plate.   
     
     
         14 . The process of  claim 13  comprising applying a material with a low coefficient of friction to said annular region of the joint between the reservoir body and the base plate, surrounding the base plate before the composite body is wound and the liner glued to the composite body.