公开(公告)号：US20200332678A1

公开(公告)日：2020-10-22

申请号：US16759707

申请日：2018-10-10

Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA

Inventor： Yuichi SAITO ,  Hidetsugu ISHIMARU ,  Ryota TAKEUCHI ,  Toshimitsu ADACHI ,  Daisuke KARIYA ,  Naoto SAKAI

IPC: F01D25/16 ,  F01D25/10 ,  F02C1/02 ,  F02C6/06 ,  F02C7/06 ,  F02C7/28 ,  F16C32/06 ,  F16J15/447

Abstract: An expansion turbine configured such that even when pressure of process gas steeply changes, the amount of process gas leaking from a gap between an impeller and a cover is made small. The expansion turbine includes a gas supply passage which is connected to any one of a gas supply passage and a gas discharge passage and through which gas is supplied to a region located between a rotor member and a casing member.

公开(公告)号：US20200292211A1

公开(公告)日：2020-09-17

申请号：US16759588

申请日：2018-10-10

Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA

Inventor： Yuichi SAITO ,  Hidetsugu ISHIMARU ,  Ryota TAKEUCHI ,  Toshimitsu ADACHI ,  Daisuke KARIYA ,  Naoto SAKAI

IPC: F25B9/06 ,  F16C32/06

Abstract: The amount of consumption of gas is reduced when the gas is expanded to be cooled by using a plurality of expansion turbines. A high-pressure expansion turbine includes: a gas supply passage through which bearing gas is supplied to a bearing portion; and a gas discharge passage through which the bearing gas which has been supplied from the gas supply passage to the bearing portion is discharged from the bearing portion. A low-pressure expansion turbine includes: a gas supply passage through which the bearing gas is supplied to a bearing portion; and a gas discharge passage through which the bearing gas which has been supplied from the gas supply passage to the bearing portion is discharged from the bearing portion. The bearing gas discharged from the gas discharge passage of the high-pressure expansion turbine is supplied to the gas supply passage of the low-pressure expansion turbine.