公开(公告)号：JPH07279605A

公开(公告)日：1995-10-27

申请号：JP7661195

申请日：1995-03-31

Applicant: ABB MANAGEMENT AG

Inventor： EAHARUTO KURAISU ,  PIEERU MEIRAN

IPC: F01D5/08 ,  F01D25/00 ,  F01D25/24

Abstract: PURPOSE: To minimize a clearance between a stator and a rotor by compensating a temperature difference between the stator and the rotor generated within transient operation range, and thermally controlling the rotor after a temperature distribution characteristic of the stator is assessed, in the case of operation of a fluid machine composed of a plurality of shaft parts by connecting welded with the rotor, and which is provided with a hollow chamber on an end surface of the shaft parts. CONSTITUTION: A fluid machine is composed of a rotor 3 and rotors with which two shaft parts 1, 2 are welded, as means. A hollow chamber 10 is formed on an end surface of the shaft parts 1, 2 on which a welding bead 4 is formed. According to a temperature conditioning of the shaft parts 1, 2 with respect to the stator 3, a conditioning medium gas 6 flows an extending passage 11 through a passage 7 of a guide impeller 5. Conditioning gas 12 after flowing the extending passage 11 is discharged in flow of operating gas 13. Accordingly, the shaft is adapted to a temperature characteristic of the stator. Especially, at the time of stop of a turbo device, slow down operation for a long time is eliminated for level out of a temperature between the stator and the shaft.