Pressure compensator for a subsea device

摘要

A pressure compensator for a subsea device for performing a pressure compensation between an ambient medium surrounding the subsea device and a liquid medium filling a volume of the subsea device is provided. The pressure compensator has at least one outer bellow and a first chamber enclosed by the outer bellow. It further has at least one inner bellow which is arranged inside the first chamber, and a second chamber enclosed by the inner bellow. Between the outer bellow and the inner bellow, a compensation volume is confined, which is provided with a fluid connection to the volume of the subsea device.

主权项

1. A pressure compensator for a subsea device for performing a pressure compensation between an ambient medium surrounding the subsea device and a liquid medium filling a volume of the subsea device, the pressure compensator comprising:
at least one outer bellow; a first chamber enclosed by said outer bellow; at least one inner bellow, the inner bellow being arranged inside the first chamber; a second chamber enclosed by the inner bellow; a compensation volume confined between the outer bellow and the inner bellow; a first fluid connection from the compensation volume towards the volume of the subsea device, the first fluid connection enabling passage of the liquid medium between the compensation volume and the volume of the subsea device; and a second fluid connection to the second chamber, the second fluid connection enabling passage of the ambient medium into and out of the second chamber.