Rotary separator and shaft coupler for compressors

• US 8,079,805 B2
• Filed: 06/25/2008
• Issued: 12/20/2011
• Est. Priority Date: 06/25/2008
• Status: Expired due to Fees

• Current Assignee: Dresser-Rand Group Incorporated (Siemens AG)
• Original Assignee: Dresser-Rand Group Incorporated (Siemens AG)
• Inventors: Maier, William C.
• Primary Examiner(s): Geyer, Scott B
• Application Number:
  US12/215,069
• Publication Number:
  US 20090324391A1
• Time in Patent Office: 1,273 Days
• Field of Search: None
• US Class Current: 415/115
• CPC Class Codes: B01D 45/12 by centrifugal forces centrifuges B04B; cyclones B04C

Abstract

A separator is for a turbomachine, preferably a compressor including a casing, a primary compressor shaft with an impeller disposed within the casing, and a drive shaft connectable with the compressor shaft. The separator includes a coupler having a central axis and being configured to connect the drive shaft with the compressor shaft such that the rotation of the driver shaft rotates the coupler and connected compressor shaft. A separation surface extends circumferentially about the axis so as to at least partially define a flow passage for a fluid stream, the separation surface being disposed either generally within or generally about the coupler. The separation surface is connected with the coupler such that rotation of at least one of the two shafts rotates the separation surface generally about the axis so that liquid within the fluid stream contacting the separation surface is separated from the fluid stream.

Claims

1. A separator for a compressor including a casing, a primary compressor shaft disposed within the casing, at least one impeller mounted on the compressor shaft, and a drive shaft connectable with the compressor shaft, the separator comprising:

a coupler having a central axis and being configured to connect the drive shaft with the compressor shaft such that the rotation of the driver shaft rotates the coupler and connected compressor shaft; and

a separation surface extending circumferentially about the axis so as to at least partially define a flow passage for a fluid stream, the separation surface being disposed one of generally within and generally about the coupler and connected with the coupler such that rotation of at least one of the two shafts rotates the separation surface generally about the axis so that liquid within the fluid stream contacting the separation surface is separated from the fluid stream.

2. The separator as recited in claim 1 wherein the coupler includes an inner tubular body and the separator further comprises an outer tubular body disposed about the inner tubular body such that the flow passage is defined between the two tubular bodies, the outer tubular body having an inner circumferential surface providing the separation surface and the inner tubular body being configured to connect the compressor shaft with the drive shaft.

3. The separator as recited in claim 2 wherein the coupler further includes a plurality of generally radially-extending connectors extending between and connecting the inner and outer tubular bodies.

4. The separator as recited in claim 2 wherein each tubular body has first and second ends, the first end of the inner tubular body being connectable with the drive shaft and the second end of the inner tubular body being connectable with the compressor shaft such that the inner body is configured to couple the two shafts.

5. The separator as recited in claim 2 wherein each tubular body has first and second ends, the first ends of two tubular bodies defining a generally annular inlet of the flow passage and the second ends of the bodies defining a generally annular outlet of the flow passage.

6. The separator as recited in claim 5 wherein the first end of the outer tubular body is spaced axially inwardly with respect to the first end of the inner tubular body, the second end of the outer tubular body is spaced axially inwardly with respect to the second end of the inner tubular body, and each of the first and second ends of the inner tubular body extend radially outwardly with respect to a remainder of the inner body such that the inlet and outlet extend at least partially radially.

7. The separator as recited in claim 6 wherein the outer tubular body further has an outer circumferential surface and at least one outlet port extending radially between the body inner and outer surfaces, the outlet port being configured to discharge liquids from the flow passage.

8. The separator as recited in claim 5 wherein the second end of the outer tubular body has a first diameter and a central portion of the outer body has a second diameter, the second diameter being greater than the first diameter such that at least a section of the separation surface is generally angled so as to direct liquids toward the body central portion.

9. The separator as recited in claim 1 further comprising a static member disposed about the coupler and having a central bore, the bore having an inner circumferential separation surface spaced radially outwardly from the coupler such that a static separation passage is defined between the static member and the coupler, the static separation surface being configured such that liquid in a fluid stream contacting the surface is separated from the stream.

10. The separator as recited in claim 9 wherein the static member includes a generally cylindrical body connected with the casing.

11. The separator as recited in claim 9 further comprising a plurality of blades disposed at least partially within the static separation passage and spaced circumferentially about the axis, each blade being configured to direct fluid contacting the blade generally circumferentially with respect to the axis.

12. The separator as recited in claim 1 wherein the coupler includes a generally tubular body having opposing axial ends, each end being configured to engage with a separate one of the drive shaft and the compressor shaft so as to couple the drive and compressor shafts.

13. The separator as recited in claim 12 wherein each body end is releasably connectable with one of the drive shaft and the compressor by a plurality of threaded fasteners.

14. A compressor assembly comprising:

a casing including an interior chamber;

a drive including a shaft, the shaft extending into the interior chamber;

at least one impeller mounted on a compressor shaft, the compressor shaft being disposed in the casing interior; and

a separator including a coupler, the coupler having a central axis and being configured to connect the drive shaft with the compressor shaft such that the rotation of the driver shaft rotates the coupler and connected compressor shaft, and a separation surface extending circumferentially about the axis so as to at least partially define a flow passage for a fluid stream, the separation surface being disposed one of generally within and generally about the coupler and connected with the coupler such that rotation of at least one of the two shafts rotates the separation surface generally about the axis so that liquid within the fluid stream contacting the separation surface is separated from the fluid stream.

15. The compressor as recited in claim 14 wherein the coupler includes an inner tubular body and the separator further comprises an outer tubular body disposed about the inner tubular body such that the flow passage is defined between the two tubular bodies, the outer tubular body having an inner circumferential surface providing the separation surface and the inner tubular body being configured to connect the compressor shaft with the drive shaft.

16. The compressor as recited in claim 15 wherein each tubular body has first and second ends, the first end of the inner tubular body being connectable with the drive shaft and the second end of the inner tubular body being connectable with the compressor shaft such that the inner body is configured to couple the two shafts.

17. The compressor as recited in claim 15 wherein each tubular body has first and second ends, the first ends of two tubular bodies defining a generally annular inlet of the flow passage and the second ends of the bodies defining a generally annular outlet of the flow passage, the first end of the outer tubular body being spaced axially inwardly with respect to the first end of the inner tubular body, the second end of the outer tubular body being spaced axially inwardly with respect to the second end of the inner tubular body, and each of the first and second ends of the inner tubular body extending radially outwardly with respect to a remainder of the inner body such that the inlet and outlet extend at least partially radially.

18. The compressor as recited in claim 14 further comprising a static member disposed about the coupler and having a central bore, the bore having an inner circumferential separation surface spaced radially outwardly from the coupler such that a static separation passage is defined between the static member and the coupler, the static separation surface being configured such that liquid in a fluid stream contacting the surface is separated from the stream.

19. The compressor as recited in claim 18 further comprising a plurality of blades disposed at least partially within the static separation passage and spaced circumferentially about the axis, each blade being configured to direct fluid contacting the blade generally circumferentially with respect to the axis.

20. A separator for a compressor including a casing, a primary compressor shaft disposed within the casing, at least one impeller mounted to the compressor shaft, and a drive shaft connectable with the compressor shaft, the separator comprising:

a coupler including an inner tubular body having a central axis and being configured to connect the drive shaft with the compressor shaft such that the rotation of the driver shaft rotates the coupler and connected compressor shaft; and

an outer tubular body disposed about the inner tubular body such that a flow passage is defined between the bodies, the outer body having an inner circumferential separation surface extending about the axis such that rotation of at least one of the two shafts rotates the separation surface generally about the axis so that liquid within the fluid stream contacting the separation surface is separated from the fluid stream.

21. A separator for a turbomachine including a casing, a working shaft disposed within the casing, at least one fluid handling component mounted on the working shaft, and a drive shaft connectable with the working shaft, the separator comprising:

a coupler having a central axis and being configured to connect the drive shaft with the working shaft such that the rotation of the driver shaft rotates the coupler and connected working shaft; and

a separation surface extending circumferentially about the axis so as to at least partially define a flow passage for a fluid stream, the separation surface being disposed one of generally within and generally about the coupler and connected with the coupler such that rotation of at least one of the two shafts rotates the separation surface generally about the axis so that liquid within the fluid stream contacting the separation surface is separated from the fluid stream.