Granted Patent B2

US 12,651,688 · App. 18/044,382 · Granted Jun 9, 2026

Inventors: Steinar Hommedal (Sandvika, NO); Swethnag Mahidhar Padakandla (Heimdal, NO); Helyson Parente (Trondheim, NO)

Assignee: SIEMENS ENERGY AS

H01F27/14

Abstract

Claims (43)

1 . An enclosure for a subsea control and power arrangement, the enclosure comprising:

a cannister and a lid connected to the cannister to

form an enclosure volume, the enclosure volume containing a first fluid and one of a control device and a power device;

a first volume compensator having a first chamber and a second chamber each having a variable volume separated by a membrane, the first chamber filled with an ambient fluid and the second chamber filled with a second fluid different from the ambient fluid;

a second volume compensator having a third chamber forming a variable volume and partially defined by a bellows; and

a connector assembly extending through the lid and into the enclosure volume, the connector assembly including

a housing that defines a fourth chamber and

a connector part,

the connector part mounted at least partly within the housing, the housing cooperating with the bellows to define the third chamber; and

the second chamber, the third chamber and the fourth chamber are liquidly connected to one another to form a compensator volume, wherein the first fluid, the second fluid, and the ambient fluid are fully separated from one another.

2 . The enclosure of claim 1 , wherein

the compensator volume and/or the enclosure volume is completely filled, and wherein the first fluid and the second fluid are one of a dielectric liquid and a dielectric oil.

3 . The enclosure of claim 1 , wherein

the membrane includes one of a bellows arrangement, a balloon arrangement, a movable membrane and a deformable or stretchable membrane.

4 . The enclosure of claim 1 , wherein

the first volume compensator comprises a volume compensator housing and the membrane arranged within the volume compensator housing and forms therein the first chamber and the second chamber,

the second chamber is part of the compensator volume,

the volume compensator housing comprises an aperture to liquidly connect the first chamber with ambient fluid with the first chamber and the second chamber separated by the membrane.

5 . The enclosure of claim 1 , wherein

the first volume compensator comprises a volume compensator housing and a second bellows coupled to the membrane and arranged within the volume compensator housing to form the first chamber and the second chamber,

the second chamber being part of the compensator volume,

the volume compensator housing including an aperture to liquidly connect the first chamber with ambient fluid, with the first chamber and the second chamber separated by the bellows and membrane.

6 . The enclosure of claim 1 , wherein

the second volume compensator comprises the bellows which surrounds a portion of the housing of the connector assembly to fully enclose the second chamber,

the housing of the connector assembly including at least one aperture which liquidly connects the third chamber and the fourth chamber.

7 . The enclosure of claim 6 , wherein

the bellows is secured to an internal surface of the lid, and

a passage extends through the lid and liquidly connects the second chamber and the third chamber.

8 . The enclosure of claim 1 wherein

the lid comprises a first sealing surface and a second sealing surface and

the cannister comprises a third sealing surface and a fourth sealing surface,

a first seal formed between the first sealing surface and the third sealing surfaces and a second seal formed between the second sealing surfaces and the fourth sealing surface, wherein the first sealing surface is planar and the second sealing surface is cylindrical and normal to the first sealing surface.

9 . The enclosure of claim 1 wherein

the first volume compensator is mounted to an external surface of the lid or an external surface of the cannister.

10 . The enclosure of claim 1 wherein

one or more output connectors are connected to the enclosure.

11 . The enclosure of claim 1 wherein

the one of a control device and a power device includes a transformer located within the enclosure volume.

12 . The enclosure of claim 1 , wherein the ambient fluid is separated from the first fluid by the membrane, the compensator volume, and the bellows.

13 . The enclosure of claim 1 , wherein the ambient fluid is seawater at a pressure greater than 300 bars.

14 . The enclosure of claim 1 , wherein the bellows includes a corrugated portion formed from a metallic material.

15 . The enclosure of claim 1 , wherein the bellows includes a first corrugated portion having a first maximum diameter and a second corrugated portion having a second maximum diameter smaller than the first maximum diameter, and wherein the first corrugated portion and the second corrugated portion are formed from a metallic material.

16 . The enclosure of claim 15 , wherein the bellows includes a ring positioned between the first corrugated portion and the second corrugated portion, wherein the first corrugated portion and the second corrugated portion are axially offset from one another along a length of the housing of the connector.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (45)