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：US20130149101A1

公开(公告)日：2013-06-13

申请号：US13675368

申请日：2012-11-13

Applicant: Dresser-Rand Company

Inventor： Stephen G. Clute ,  Mark J. Kuzdzal ,  Glenn R. Grosso ,  David J. Peer

IPC: F01D3/04

CPC classification number: F01D3/04 ,  F01D11/02 ,  F01D11/025 ,  F01D11/04 ,  F04D29/0416 ,  F04D29/2266

Abstract: Balance piston assembly, apparatus, and methods are provided. The assembly includes a balance piston coupled to a rotatable shaft and configured to rotate therewith, the balance piston including a first shelf and a second shelf, the first and second shelves being axially-overlapping and radially-offset. The assembly also includes a seal including a first sealing surface configured to seal with the first shelf and a second sealing surface configured to seal with the second shelf.

Abstract translation: 提供平衡活塞组件，装置和方法。 所述组件包括联接到可旋转轴并被配置为随其旋转的平衡活塞，所述平衡活塞包括第一搁架和第二搁架，所述第一和第二搁架在轴向上重叠并且径向偏移。 组件还包括密封件，该密封件包括构造成与第一搁板密封的第一密封表面和被配置为与第二搁板密封的第二密封表面。

公开(公告)号：US20210040958A1

公开(公告)日：2021-02-11

申请号：US16965684

申请日：2018-02-15

Applicant: Dresser-Rand Company

Inventor： James M. Sorokes ,  Mark J. Kuzdzal ,  El Mostafa El Ghazzani ,  Pascal Lardy

IPC: F04D29/44 ,  F04D29/28 ,  F04D17/10 ,  F04D25/16 ,  F04D21/00

Abstract: Compressors achieve in a single stage a high-pressure ratio (r) of greater than or equal to 2.5:1 on a process fluid having a molecular weight of 12-20, such as natural gas. Two or more of the compressor stages are combined serially to increase overall pressure ratio. Each single-stage includes respective inlet and outlet passages and an unshrouded, centrifugal impeller that includes a plurality of impeller blades. Process fluid is discharged from trailing edges of the impeller blades at a rotational velocity greater than or equal to 1400 feet/second into a diffuser passage of the outlet. Dimension ranges of the annular diffuser passage, the centrifugal impeller, and the diffuser vanes vary as a function of pressure ratio (r) and/or the flow coefficient (φ) of the process fluid flowing between the inlet and the outlet.

公开(公告)号：US10208768B2

公开(公告)日：2019-02-19

申请号：US15075299

申请日：2016-03-21

Applicant: Dresser-Rand Company

Inventor： David J. Peer ,  David Andrew Taylor ,  Brian David Massey ,  Kirk Ryan Lupkes ,  Scott David Wisler ,  James M. Sorokes ,  Mark J. Kuzdzal

IPC: F04D29/58 ,  F04D17/10 ,  F04D25/06 ,  F04D29/06 ,  F04D29/10 ,  F04D29/28 ,  F04D29/42 ,  F04D29/44 ,  F04D29/66 ,  F04D29/051

Abstract: A compressor may include a casing defining a discharge cavity and a seal cavity. A rotary shaft may be disposed in the casing, and a shaft seal assembly may be disposed in the seal cavity and about the rotary shaft. An impeller may be coupled with and configured to be driven by the rotary shaft. A balance piston may be integral with the impeller and may define the discharge cavity and the seal cavity. A balance piston seal may be disposed about the balance piston such that the balance piston seal and the balance piston define a radial clearance therebetween. The radial clearance may be configured to provide fluid communication from the impeller to the discharge cavity. A heat shield may be disposed in the discharge cavity, and may be configured to prevent the conduction of heat from the discharge cavity to the seal cavity via the casing.