HIGH PRESSURE BARRIER FLUID SYSTEM FOR SUBSEA PUMPS AND COMPRESSORS

摘要

The invention provides a barrier fluid system for lubricating, cooling and cleaning bearings and seals of subsea turbomachines, also in situations where the pressure can undergo large changes. The system comprises: a topsides barrier fluid supply facility; an umbilical connecting the topsides barrier fluid supply facility to a subsea turbomachine; and a barrier fluid pressure regulator for delivery of barrier fluid at a controlled first overpressure from the umbilical to bearings and seais in a motor cavity of the subsea turbomachine. The system is distinctive in that it further comprises: at least one highest pressure barrier fluid reservoir or supply faciiity: and a pressure regulation system for controlling the pressure of barrier fluid delivered to the pressure regulator to be at a second overpressure compared to the first overpressure.