公开(公告)号：WO2019160550A1

公开(公告)日：2019-08-22

申请号：PCT/US2018/018361

申请日：2018-02-15

Applicant: DRESSER-RAND COMPANY

Inventor： SOROKES, James M. ,  KUZDZAL, Mark J. ,  EL GHAZZANI, El Mostafa ,  LARDY, Pascal

IPC: F04D21/00 ,  F04D29/44 ,  F04D29/28 ,  F04D17/10 ,  F04D17/12

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：EP3740684A1

公开(公告)日：2020-11-25

申请号：EP18707603.9

申请日：2018-02-15

Applicant: Dresser-Rand Company

Inventor： SOROKES, James M. ,  KUZDZAL, Mark J. ,  EL GHAZZANI, El Mostafa ,  LARDY, Pascal

IPC: F04D21/00 ,  F04D29/44 ,  F04D29/28 ,  F04D17/10 ,  F04D17/12