HIGH TEMPERATURE SUBSEA DYNAMIC SEALS

摘要

Systems and methods are described for processing a high-temperature process fluid using a processing machine in a subsea location while protecting dynamic seals within the machine. In some examples a small portion of the process fluid is cooled using a cooling system the cooled process fluid is then directed towards the dynamic seals. In other examples the dynamic seals are shielded and isolated from the high temperature process fluid and cooler barrier fluid is circulated within an enclosed volume in proximity to the seal.

主权项

1. A subsea fluid processing machine adapted to process a high-temperature subsea process fluid, the machine comprising:
a stationary machine body configured for deployment in a subsea location; at least one rotating member configured to rotate about a central axis thereby mechanically processing said high temperature process fluid at the subsea location; a dynamic seal configured to form a mechanical seal between said rotating member and second member of the machine, the dynamic seal including a first and second seal portions that are configured to rotate with respect to each other; a shielding portion positioned and configured to shield said dynamic seal from said high temperature process fluid; and an enclosed volume defined by said shielding portion and one or more surfaces of said dynamic seal, the volume configured to contain a lubricating fluid that is cooler than said high temperature process fluid.