Electrical machine having a frame and sleeve

Patent metadata

Field	Value
Publication number	US-11018548-B2
Application number	US-201415119307-A
Country	US
Kind code	B2
Filing date	Feb 17, 2014
Priority date	Feb 17, 2014
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

The invention relates to an electrical machine (1) comprising a rotor (4) which is rotatably mounted around a rotation axis (5) extending in the axial direction (3) in bearing devices (16, 17), a stator (7) having two axial ends, an air gap between rotor and stator, an interior chamber (10) encompassing the stator (7) and rotor (4), a sleeve (11) encompassing a first part (111) which encloses the interior chamber (10), a frame (12) having a first (123) and a second (121) longitudinal support (123), a first (122) and a second (124) cross-support, and a dividing device (2) on the frame (12). The stator (7) comprises a fastening device (15) for connection to the frame (12) and the dividing device (2) can make the interior chamber accessible from the outside in a plane parallel to the frame (12). The invention further relates to a collection, to a frame (12), to a sleeve (11), or to a service or production method of such an electrical machine (1).

First claim

What is claimed is:

1. An electrical machine, comprising:
a frame including a first axial frame part, a first radial frame part, a second axial frame part and a second radial frame part connected together to form said frame, wherein the first axial frame part is directly connected to the first radial frame part and the second radial frame part, and the second axial frame part is directly connected to the first radial frame part and the second radial frame part;
a rotor mounted for rotation about a rotational axis which extends in an axial direction; and
a stator configured to extend along the rotational axis from a first axial end to a second axial end of the stator, said stator interacting with the rotor across an air gap during operation of the electrical machine; said stator including a fastening device configured to secure the stator to the frame and including four fastening units each having an adjustment device for adjusting the air gap by changing a position of the stator relative to the frame, said fastening device including a stiffening element extending in the axial direction for stiffening the stator, said stiffening element including the fastening units of the fastening device and provided for guiding a coolant out of the stator in a radial direction perpendicular to the axial direction,
wherein said frame defines in a radial plane an extent of an interior chamber for accommodating the stator and the rotor, with the radial plane being defined by the axial direction and a first radial direction which is perpendicular to the axial direction, and further comprising
a sleeve including a first device that at least partly surrounds the interior chamber;
a dividing device provided on the frame and configured to render the interior chamber accessible outside of the radial plane and outside of parallel planes, with the parallel planes intersecting the frame in parallel relation to the radial plane;
a first bearing device provided on the frame to mount the rotor at a first axial end for rotation about the rotational axis; and
a second bearing device provided on the frame to mount the rotor at a second axial end for rotation about the rotational axis,
wherein two of the four fastening units are located on a side of the electrical machine having the first axial frame part and another two of the four fastening units are located on a side of the electrical machine having the second axial frame part.

2. The electrical machine of claim 1 , wherein the stiffening element extends within a lateral area of the stator as viewed in the axial direction.

3. The electrical machine of claim 1 , wherein the dividing device includes a first dividing device between the first device of the sleeve and the frame, said first dividing device comprising detachable contact points for removing the first device of the sleeve from the frame.

4. The electrical machine of claim 1 , wherein the first device of the sleeve surrounds the interior chamber at least from the first axial end of the stator to the second axial end of the stator.

5. The electrical machine of claim 1 , further comprising a securing device configured to secure the frame to a flange for operation of the electrical machine, with the rotational axis extending in a vertical direction.

6. The electrical machine of claim 1 , wherein the first device surrounds the interior chamber on a first side of the frame at least from the first radial frame part to the second radial frame part.

7. The electrical machine of claim 1 , wherein the dividing device includes a second dividing device having detachable contact points for lifting the frame from a second device.

8. The electrical machine of claim 7 , wherein the second device is a base located at an installation site of the electrical machine.

9. The electrical machine of claim 7 , wherein the second device is a component of the sleeve.

10. The electrical machine of claim 7 , wherein the second device includes concrete.

11. The electrical machine of claim 1 , wherein the dividing device includes a third dividing device having detachable contact points for removing an outer partial guide device from the frame.

12. The electrical machine of claim 1 , further comprising a terminal box secured to the frame and configured for laying a lead from the stator via the frame to the terminal box.

13. The electrical machine of claim 1 , wherein the first bearing device is configured for removal from the first radial frame part in a second radial direction in perpendicular relation to the radial plane, said second bearing device being configured for removal from the second radial frame part in the second radial direction.

14. The electrical machine of claim 1 , further comprising an outer guide device secured to the first device.

15. The electrical machine of claim 1 , wherein the stator includes a flow arrangement configured to cool the electrical machine, said dividing device being configured to render the flow arrangement accessible outside of the radial plane and outside of the parallel planes.

16. The electrical machine of claim 15 , wherein the flow arrangement has recesses defined by linear extensions which extend in a plane perpendicular to the axial direction.

17. The electrical machine of claim 1 , wherein the sleeve has on a side of the electrical machine having the first axial frame part a first opening for cooling the electrical machine, said first opening connected to a first space which adjoins a tangential surface of the stator.

18. The electrical machine of claim 17 , wherein the sleeve has on said side a second opening for cooling the electrical machine, with the first axial frame part being situated between the first opening and the second opening.

19. The electrical machine of claim 1 , wherein the sleeve has on a side of the electrical machine having the second radial frame part a first axially oriented opening for cooling the electrical machine, said first axially oriented opening being connected to an axial flow space.

20. The electrical machine of claim 17 , wherein the sleeve has on a side of the electrical machine having the second radial frame part a first axially oriented opening for cooling the electrical machine, said first axially oriented opening being connected to an axial flow space, and further comprising a guide device arranged between the axial flow space and the first space in the interior chamber.

21. The electrical machine of claim 1 , further comprising a baffle device arranged in the interior chamber at the first axial end of the stator.

22. The electrical machine of claim 21 , wherein the stator has a winding, a guide device extending in the axial direction at least from a first axial end of the winding to a second axial end of the winding.

23. The electrical machine of claim 1 , wherein the stator includes a first protective tube and a second protective tube, said first protective tube being secured between the first radial frame part and the first axial end of the stator, and the second protective tube being secured between the second axial end of the stator and the second radial frame part.

24. The electrical machine of claim 23 , wherein the first protective tube has an opening which is connected via an overflow channel to an opening of the second protective tube.

25. The electrical machine of claim 1 , further comprising a heat dissipation device situated within the frame at the first or second axial end of

Assignees

• Siemens Ag

Inventors

• Brandl Konrad
• Deeg Christian
• Dorr Gerhard
• Eichinger Benjamin
• Greul Wolfgang Johann
• Hofmann Jürgen
• Joseph Eric
• Ressel Ekkehard
• Scharf Uwe
• Scherer Mathias
• Weiss Sebastian
• Werner Ulrich
• Stegherr Michael

Classifications

• H02K15/50

  Disassembling, repairing or modifying dynamo-electric machines (repairing of cooling fluid boxes H02K15/38) · CPC title

• H02K5/26

  Means for adjusting casings relative to their supports · CPC title

• H02K9/06 Primary

  with fans or impellers driven by the machine shaft · CPC title

• H02K9/225

  Heat pipes · CPC title

• H02K5/203

  specially adapted for liquids, e.g. cooling jackets · CPC title