Method for online detection of liner buckling in a storage system for pressurized gas
View Patent ↗A pressurized gas storage system includes an outer shell having an inner and outer surface. The inner surface defines an inner volume for holding a pressurized gas. A first electrically conductive layer is attached to the outer shell. An inner liner is disposed over the inner surface. A second electrically conductive layer is attached to the inner liner. A capacitance meter measures the capacitance between the first and second electrically conductive layers wherein a change in capacitance indicates buckling in the storage system.
1. A method for detection of liner buckling in a storage system for pressurized gas, the method comprising:
providing an outer shell having an inner surface and outer surface, the outer shell including a solid matrix, the inner surface defining an inner volume holding pressurized gas at a pressure 100 bar to 700 bar;
providing a first electrically conductive layer attached to the outer shell;
providing an inner liner disposed over the inner surface;
providing a second electrically conductive layer associated with the inner liner, the second electrically conductive layer being electrically insulated from the first electrically conductive layer; and
providing a capacitance meter that measures capacitance between the first electrically conductive layer and the second electrically conductive layer; and
detecting buckling in the storage system in which the inner liner separates from the outer shell to form a separation, the buckling being detected from the capacitance between the first electrically conductive layer and the second electrically conductive layer.
2. The method of claim 1 wherein the solid matrix comprises a carbon fiber composite.
3. The method of claim 1 wherein the first electrically conductive layer is embedded in the solid matrix.
4. The method of claim 1 wherein the first electrically conductive layer is positioned at the inner surface.
5. The method of claim 1 wherein the second electrically conductive layer is embedded in the inner liner.
6. The method of claim 1 wherein the outer shell has a circular cross section.