SUBSEA HYDRAULIC POWER UNIT

摘要

A subsea hydraulic power unit comprising an electrically powered rotodynamically operated pump (13) for powering a lower pressure first hydraulic circuit. A pressure amplifier(17) is also provided that amplifies the lower pressure provided from the first hydraulic circuit. A higher pressure second hydraulic circuit powered by the pressure amplifier (17) is also provided. This allows the much lower pressures typically generated by a rotodynamic pump (for example, a centrifugal pump) to be amplified to a useful pressure for subsea applications, and therefore allows the use of rotodynamic pumps which do not necessarily need to use mineral oils.