Hydro-pneumatic tensioner with fluid retention device

摘要

A cylinder accumulator system is disclosed. The system includes a cylinder comprising a cylinder rod, a cylinder barrel coaxial to the cylinder rod, a cylinder end cap coupled to the cylinder barrel and the cylinder rod, and a cylinder piston assembly disposed within the cylinder barrel. The cylinder piston assembly further includes a dynamic sealing arrangement, which comprises one or more dynamic seals. The system further includes a first annular volume coaxial to the cylinder rod and the cylinder barrel, and a second volume disposed within the cylinder piston assembly. The system also includes a piston disposed within a bore of the second volume and between a hydraulic fluid located on a first side of the piston and a gas media located on a second side of the piston. The system also includes an external high-pressure accumulator, a low-pressure accumulator, and one or more tube manifolds coupling the external high-pressure accumulator and low-pressure accumulator to the cylinder.

主权项

1. A cylinder accumulator system comprising:
a cylinder comprising a cylinder rod, a cylinder barrel coaxial to the cylinder rod, a cylinder end cap coupled to the cylinder barrel and the cylinder rod, and a cylinder piston assembly disposed within the cylinder barrel, wherein the cylinder piston assembly comprises a dynamic sealing arrangement comprising one or more dynamic seals; a first annular volume coaxial to the cylinder rod and the cylinder barrel; a second volume disposed within the cylinder piston assembly; an external high-pressure accumulator; a low-pressure accumulator; and one or more tube manifolds coupling the external high-pressure accumulator and low-pressure accumulator to the cylinder; wherein the cylinder piston assembly comprises a communication path by which a gas media is communicated from the first annular volume to the second volume, substantially equalizing the pressure in a hydraulic fluid located in the second volume and the gas media.