公开(公告)号：US20220010837A1

公开(公告)日：2022-01-13

申请号：US17293347

申请日：2018-11-20

Applicant: DRESSER-RAND COMPANY

Inventor： Byron L. Mohr ,  Tristen Barnes ,  Mark J. Kuzdzal ,  Christopher Guerra ,  Harry Francis Miller

IPC: F16C32/06 ,  F16C33/12 ,  F16C33/14

Abstract: A bearing and/or seal assembly where pressurized gas (e.g., air) may be arranged to produce a contact-free bearing and/or seal is provided. The assembly includes a permeable body (12) including structural features (13) selectively engineered to convey a pressurized gas (Ps) from an inlet side (20) side of the permeable body to an outlet side (22) of the permeable body to form an annular film of the pressurized gas relative to the rotatable shaft. Disclosed embodiments may be produced by way of three-dimensional (3D) Printing/Additive Manufacturing (AM) technologies with practically no manufacturing variability; and may also cost-effectively and reliably benefit from the relatively complex geometries and the features and/or conduits that may be involved to, for example, form the desired distribution pattern or impart a desired directionality to the pressurized gas conveyed through the permeable body of the bearing and/or seal assembly.

公开(公告)号：US20200217332A1

公开(公告)日：2020-07-09

申请号：US16631250

申请日：2018-07-16

Applicant: Dresser-Rand Company

Inventor： Byron L. Mohr ,  Christopher Guerra ,  Scott MacWilliams

IPC: F04D29/66 ,  G10K11/162 ,  G06T17/00

Abstract: An acoustic attenuator for a turbomachine and methodology for additively manufacturing the acoustic attenuator are provided. The acoustic attenuator includes an annular body (202) having an outer surface (204) and an inner surface (206). The inner surface of the annular body may define a bore (208) extending along a longitudinal axis (209) of the acoustic attenuator between a first end and a second end of the acoustic attenuator. The annular body may be formed by a plurality of axially-successive cross-sectional layers (e.g., 632, 634, 636) unitized between the first end and the second end of the acoustic attenuator. The plurality of axially-successive cross-sectional layers may be transversely disposed relative to the longitudinal axis of the acoustic attenuator. At least some axially-successive cross-sectional layers of the plurality of axially-successive cross-sectional layers (e.g., 632, 634, 636) defining a pocket (214) disposed between the outer surface and the inner surface of the annular body. At least a segment of a periphery of the pocket comprises two sides (1452, 1454) arranged to join at a common end point to form an apex (1460) of the pocket.

公开(公告)号：US11199202B2

公开(公告)日：2021-12-14

申请号：US16631250

申请日：2018-07-16

Applicant: Dresser-Rand Company

Inventor： Byron L. Mohr ,  Christopher Guerra ,  Scott MacWilliams

IPC: F04D29/66 ,  G06T17/00 ,  G10K11/162 ,  B33Y10/00 ,  B33Y80/00

Abstract: An acoustic attenuator for a turbomachine and methodology for additively manufacturing the acoustic attenuator are provided. The acoustic attenuator includes an annular body (202) having an outer surface (204) and an inner surface (206). The inner surface of the annular body may define a bore (208) extending along a longitudinal axis (209) of the acoustic attenuator between a first end and a second end of the acoustic attenuator. The annular body may be formed by a plurality of axially-successive cross-sectional layers (e.g., 632, 634, 636) unitized between the first end and the second end of the acoustic attenuator. The plurality of axially-successive cross-sectional layers may be transversely disposed relative to the longitudinal axis of the acoustic attenuator. At least some axially-successive cross-sectional layers of the plurality of axially-successive cross-sectional layers (e.g., 632, 634, 636) defining a pocket (214) disposed between the outer surface and the inner surface of the annular body. At least a segment of a periphery of the pocket comprises two sides (1452, 1454) arranged to join at a common end point to form an apex (1460) of the pocket.