Patent ID: 9038433
Filing Date: 2015-05-26
Classification: E21B,F16L,H01F,H05K

Abstract:
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.