Structural arrangement for mounting conductor winding packages in air core reactor

Patent metadata

Field	Value
Publication number	US-11823822-B2
Application number	US-202018250543-A
Country	US
Kind code	B2
Filing date	Nov 12, 2020
Priority date	Nov 12, 2020
Publication date	Nov 21, 2023
Grant date	Nov 21, 2023

Abstract

An improved structural arrangement for mounting winding packages in the air core reactor is provided. Disclosed embodiments make use of structural properties, such as hoop tensile properties, of a filament roving 130 that may be arranged to surround structural features (e.g., inclined surfaces 108 ) formed in a disclosed mounting plate 110.

First claim

What is claimed is:

1. An air core reactor comprising:
a winding package positioned to extend along a central axis from a first reactor end to a second reactor end that is opposite the first reactor end;
a spider arm that extends in a direction radially away from the central axis to a spider end, the spider arm located at the first reactor end and coupled to the winding package;
a mounting plate coupled to the spider arm, the mounting plate having a height that extends between a first plate edge and a second plate edge, the mounting plate including an outward plate portion having a ramped surface that extends along a width of the mounting plate from a plate location between the first plate edge and the second plate edge to the second plate edge, the ramped surface defining an oblique angle relative to a plane orthogonal to the height and the width of the mounting plate; and
a filament roving wound 360 degrees about the central axis to provide circumferential support to the winding package, the ramped surface of the support plate surrounded by the filament roving.

2. The air core reactor of claim 1 , wherein the ramped surface is formed by a plurality of inclined surfaces between the plate location and the second plate edge.

3. The air core reactor of claim 1 , wherein the filament roving is formed from a resin-impregnated fiber material.

4. The air core reactor of claim 3 , wherein the fiber material has at least one type of fiber selected from the group consisting of glass fibers, basalt fibers, aramid fibers and polyester fibers.

5. The air core reactor of claim 1 , wherein the ramped surface defines an increasing radius relative to the central axis from the plate location to the second plate edge.

6. The air core reactor of claim 1 , wherein the spider arm includes a planar portion having a height that extends parallel to the central axis to define a first spider arm edge and a second spider arm edge, and a width that extends in a direction normal to the central axis to define an edge width of the spider arm.

7. The air core reactor of claim 6 , wherein the mounting plate has a slot that extends from the first plate edge to define a slot length sized to receive the height of the planar portion of the spider arm and having a width sized to receive the width of the planar portion of the spider arm.

8. The air core reactor of claim 7 , further comprising a first weld joint extending along the slot to affix the mounting plate to the spider arm at a slot interface.

9. The air core reactor of claim 6 , further comprising a support stand having a planar surface arranged to support the edge width of the mounting plate at the first plate edge and the first spider arm edge.

10. The air core reactor of claim 9 , further comprising a second weld joint extending along the edge width of the mounting plate to affix the first plate edge to the support stand.

11. The air core reactor of claim 10 , further comprising a third weld joint extending along the first spider arm edge to affix the first spider arm edge to the support stand.

12. The air core reactor of claim 11 , wherein the first weld joint, the second weld joint, and the third weld joint intersect at a common joining point of the first plate edge, the first spider arm edge and the planar surface of the support stand.

13. The air core reactor of claim 1 , comprising a further mounting plate and a further filament roving coupled to a spider arm located at the second reactor end.

14. The air core reactor of claim 1 , wherein the winding package is a cylindrical winding package.

15. The air core reactor of claim 1 , wherein the height of the mounting plate extends parallel to the central axis and the width of the mounting plate extends in a direction normal to the central axis.

16. The air core reactor of claim 1 , further comprising a dielectric strip that extends along the width of the mounting plate and disposed at the second plate edge of the mounting plate.

17. The air core reactor of claim 1 , wherein in response to bending of the spider arm that develops during operation of the air core reactor, the filament roving that surrounds the ramped surface develops a hoop tension effective to restrain the bending of the spider arm.

18. A method of operating an air core reactor having a winding package positioned to extend along a central axis from a first reactor end to a second reactor end, and a spider arm that extends in a direction radially away from the central axis to a spider end, the method comprising:
coupling a mounting plate to the spider arm, the mounting plate having a height that extends between a first plate edge and a second plate edge, the mounting plate including an outward plate portion having a ramped surface that extends along a width of the mounting plate from a plate location between the first plate edge and the second plate edge to the second plate edge, the ramped surface defining an oblique angle relative to a surface orthogonal to the height and the width of the mounting plate;
winding a filament roving over 360 degrees about the central axis to provide circumferential support to the cylindrical winding package;
surrounding the ramped surface of the mounting plate with the filament roving; and
in response to bending of the spider arm that develops during operation of the air core reactor, the filament roving that surrounds the ramped surface developing a hoop tension effective to restrain the bending of the spider arm.

19. The method of claim 18 , further comprising forming the ramped surface by way of a plurality of inclined surfaces between the plate location and the second plate edge.

20. The method of claim 18 , wherein the ramped surface defines an increasing radius relative to the central axis from the plate location to the second plate edge.

21. The method of claim 18 , wherein the spider arm includes a planar portion having a height that extends parallel to the central axis to define a first spider arm edge and a second spider arm edge, and a width that extends in a direction normal to the central axis to define an edge width of the spider arm, and wherein the method further comprises forming in the mounting plate a slot that extends from the first plate edge to define a slot length sized to receive the height of the planar portion of the spider arm and having a slot width sized to receive the width of the planar portion of the spider arm.

Assignees

• Siemens Energy Global Gmbh & Co Kg

Inventors

• Khan Kamran
• Lang Andrew

Classifications

• H01F27/306 Primary

  Fastening or mounting coils or windings on core, casing or other support · CPC title

• H01F37/005 Primary

  without magnetic core · CPC title

• H01F27/324

  Insulation between coil and core, between different winding sections, around the coil; Other insulation structures · CPC title

• H01F27/06

  Mounting, supporting or suspending transformers, reactors or choke coils {not being of the signal type} · CPC title