| 摘要 |
<p>A hydraulic accumulator assembly 1 in which a hydraulic accumulator 2 is associated with at least one sensing device 4 configured to provide an indication of the displacement of an internal divider 3 within the accumulator to provide an indication of the volume of gas within the hydraulic accumulator. The sensor can be mounted either perpendicularly or parallel to the direction of displacement of the divider and the internal divider can comprise an ultrasound or electromagnetic radiation reflection sensor. The accumulator can also comprise a pressure and temperature sensor (9 fig. 4) that can be used to calculate the quantity of energy stored in the accumulator. The internal divider can be a piston 3, a bladder (10 fig. 5) or a diaphragm and the accumulator can be used in an underwater extraction well facility. Also claimed is a method for providing an indication of the volume of gas within a hydraulic accumulator by sensing the displacement of an internal divider.</p> |
