公开(公告)号：US20170241289A1

公开(公告)日：2017-08-24

申请号：US15519363

申请日：2014-11-19

申请人： MITSUBISHI HITACHI POWER SYSTEMS, LTD.

发明人： Kohei HIDAKA ,  Susumu WAKAZONO ,  Toshihiro TAKEDA ,  Scott CLOYD ,  Santo SCIMECA

IPC分类号： F01D25/16 ,  F16J15/3268 ,  F16C17/03 ,  F16J15/3288 ,  F01D11/00 ,  F01D21/00

CPC分类号： F01D25/162 ,  F01D11/003 ,  F01D21/003 ,  F01D25/16 ,  F05D2220/32 ,  F05D2230/72 ,  F05D2240/20 ,  F05D2240/50 ,  F05D2240/55 ,  F16C17/03 ,  F16C2237/00 ,  F16C2360/23 ,  F16J15/3268 ,  F16J15/3288 ,  Y10T29/49318 ,  Y10T29/49718 ,  Y10T29/49719 ,  Y10T29/49721 ,  Y10T29/49723 ,  Y10T29/49725

摘要： An exhaust-side journal bearing for supporting a gas turbine rotor is disposed inside a bearing box. The bearing box is supported by a strut which extends inward from an exhaust casing, and a seal ring having an annular inner peripheral end is disposed on the bearing box. Executed during a maintenance work are: a bearing adjustment step of displacing a bearing surface of the journal bearing relative to the bearing box in a perpendicular direction perpendicular to the axial direction; and a seal ring adjustment step of displacing the inner peripheral end of the seal ring relative to the bearing box in accordance with the direction of displacement and the amount of displacement of the bearing surface.