Ultra lightweight and compact accumulator

摘要

An accumulator assembly comprises an accumulator cylinder formed of a cylindrical, gas-impermeable shell and a cylindrical gas-impermeable sleeve disposed within and substantially concentric with the shell. An interstitial space is formed between the sleeve and the shell. A piston slidably is disposed within the sleeve, the piston separating an interior of the sleeve into a first chamber configured to contain a compressed gas, and a second chamber configured to contain a pressurized fluid. A pair of removable axial closures retained to the gas-impermeable sleeve at opposing ends and sealingly engaged with corresponding opposing ends of the gas-impermeable shell is configured to provide maximum resistance to the tensional stress of the sleeve.

主权项

1. An accumulator assembly comprising:
at least one accumulator cylinder, including
a cylindrical, gas-impermeable shell;a cylindrical gas-impermeable sleeve disposed within and substantially concentric with the shell, an interstitial space formed between the sleeve and the shell, the sleeve extending between opposing open ends;a piston slidably disposed within the sleeve, the piston separating an interior of the sleeve into a first chamber configured to contain a compressed gas, and a second chamber configured to contain a pressurized fluid; anda pair of removable axial closures retained to said gas-impermeable sleeve at the opposing ends and sealingly engaged with corresponding opposing ends of said gas-impermeable shell, each said axial closure having a cylindrical stepped periphery with a larger diameter portion concentric with a smaller diameter portion, the smaller diameter portion extending into and removably secured in and directly sealingly engaged with an associated one of said ends of said gas-impermeable sleeve, and said axial closures configured to provide maximum resistance to the tensional stress of said sleeve, wherein one of the axial closures includes internal flutes, each of the flutes extending parallel to a longitudinal axis of said sleeve about the periphery of the smaller diameter portion of the axial closure allowing gas to flow between the interstitial space and said first chamber.