Breather layer for exhausting permeate from pressure vessels

摘要

Devices and methods for addressing permeation of a gas through a liner of a pressure vessel involve a porous layer between the liner and a composite shell of the pressure vessel around the liner. The porous layer provides fluid communication with atmosphere for gases that permeate through the liner. Such porous layers may be provided in a continuous wound set of fibers about the liner. Further, an inner composite structure may be provided between the liner and the porous layer to reduce the rate of permeation to the porous layer.

主权项

1. A pressure vessel comprising:
a liner; an inner composite structure covering the liner; an inner polymeric layer covering the inner composite structure; a porous layer covering the inner polymeric layer; an outer polymeric layer covering the porous layer; and, a composite shell covering the outer polymeric layer wherein the inner composite structure further comprises micro-channels providing fluid communication between the liner and the inner polymeric layer.