公开(公告)号：US09670746B2

公开(公告)日：2017-06-06

申请号：US14899187

申请日：2014-06-26

Applicant: HYDAC TECHNOLOGY GMBH

Inventor： Frank Bauer ,  Martin Groben ,  Alexander Albert

IPC: F16L55/04 ,  E21B33/064 ,  F15B1/10

CPC classification number: E21B33/064 ,  F15B1/103 ,  F15B2201/3153

Abstract: A device (1) adjusts a media pressure relative to an ambient pressure defined by a depth-dependent sea water pressure during use of the device (1). The sea water pressure acts on a compensator device (35) that permits a reversible change in length or elongation. At least two compensator elements (41) of the compensator device (35) are provided in series in the direction of the change in length or elongation.

公开(公告)号：US11480198B2

公开(公告)日：2022-10-25

申请号：US16980494

申请日：2019-04-12

Applicant: HYDAC TECHNOLOGY GMBH

Inventor： Martin Groben

IPC: F15B1/10 ,  F16L55/053 ,  F15B1/22 ,  F15B21/00

Abstract: A damping device for fluids subject to pressure pulsations has at least one hydraulic accumulator (2). The accumulator housing (4, 6) contains a movable separating element (18), which separates a gas side (14) from a fluid room (16) and can be pressurized by a fluid present in the fluid room (16). A damper housing (34) having a second fluid room (38) is provided as a component of the accumulator housing (4, 6). Through the second fluid room (38), the fluid subject to pressure pulsations can flow. The second fluid room (38) contains a second movable separating element (40), which separates the second fluid room (38) from the first fluid room (16) of the hydraulic accumulator (2) without dead space.