Electrical device having a tank with a convex bulging portion

Patent metadata

Field	Value
Publication number	US-12562299-B2
Application number	US-202117918979-A
Country	US
Kind code	B2
Filing date	Apr 9, 2021
Priority date	Apr 14, 2020
Publication date	Feb 24, 2026
Grant date	Feb 24, 2026

Abstract

An electrical device for connection to a high-voltage system has a tank filled with insulating fluid. The tank has at least one side wall forming a planar wall portion and a radially outwardly curved bulging/convex portion, which increases the interior volume of the tank. An active part with a core and at least one winding is arranged in the tank. A winding barrier system encloses one or more windings. The convex bulging portion has a shape that complements a portion of the winding barrier system and lies opposite it at a distance, such that the electrical device has increased dielectric strength. An additional barrier is disposed between the winding barrier system and the convex bulging portion which has a round portion, bent radially outwards and facing the convex bulging portion, and two planar flat portions, which at an axial crease respectively extend out of the round portion towards a free end.

First claim

The invention claimed is:

1 . An electrical device for connection to a high-voltage system, the electrical device comprising:
a tank filled with insulating fluid, said tank having at least one side wall with a planar wall portion and a radially outwardly curved convex bulging portion, which extends between two axial edges and increases an interior volume of said tank; an active part disposed in said tank, said active part having a core and at least one winding enclosing a portion of said core; at least one winding barrier system enclosing one or more of said windings; said convex bulging portion having a shape that complements a portion of said winding barrier system and lies opposite said winding barrier system at a spacing distance; and an additional barrier between said winding barrier system and said convex bulging portion, said additional barrier having a round portion facing toward said convex bulging portion and being bent radially outwards, and two planar flat portions respectively extending via an axial crease from said round portion toward a free end.

2 . The electrical device according to claim 1 , wherein said round portion is formed with a shape that complements the convex bulging portion.

3 . The electrical device according to claim 1 , wherein each of said flat portions extends parallel to said planar wall portion of said side wall.

4 . The electrical device according to claim 1 , wherein said additional barrier is supported by way of at least one lid segment arranged at a spacing distance from said winding barrier system and by way of a support band at a spacing distance from said winding barrier system and said convex bulging portion.

5 . The electrical device according to claim 1 , further comprising at least one adjuster, which extends between said winding barrier system and said flat portion of said additional barrier.

6 . The electrical device according to claim 5 , wherein said at least one adjuster is secured to said winding barrier system by way of said support band.

7 . The electrical device according to claim 5 , wherein said at least one adjuster is secured to the respective said flat portion by a securing line.

8 . The electrical device according to claim 1 , wherein said winding barrier system has a circular-cylindrical outer contour and said convex bulging portion delimits a portion of a circular hollow cylinder, and wherein said winding barrier system and said convex bulging portion are arranged concentrically with respect to one another.

9 . The electrical device according to claim 1 , wherein said convex bulging portion and said round portion each delimit a portion of a respective hollow cylinder, wherein the hollow cylinders have different radii and said convex bulging portion and said round portion are arranged concentrically with respect to one another.

10 . The electrical device according to claim 9 , wherein, in a plan view, said two axial edges of said side wall and said two creases of said additional barrier span the same angle with respect to a center point.

Assignees

• Siemens Energy Global Gmbh & Co Kg

Inventors

• Hoppe Jens
• Loppach Karsten
• Reichert Christian
• Wende Thomas
• Özen Bilen

Classifications

• H01F27/34

  Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields · CPC title

• H01F27/321

  using a fluid for insulating purposes only · CPC title

• H01F27/02 Primary

  Casings · CPC title