FIXING SYSTEM FOR ROTOR OF ROTATING FLUID MACHINE

Title:

FIXING SYSTEM FOR ROTOR OF ROTATING FLUID MACHINE

Document Type and Number:

Japanese Patent JP2008298287

Kind Code:

A

Abstract:

To provide a fixing system between a rotor and a rotating shaft of a centrifugal compressor.

In the fixing system, The rotor 18 has a profile which comprises a nearly concave first front surface 24 and a nearly convex second rear surface 26 opposite to the first front surface 24. The rotor 18 also has a central portion 28 restrained by interference fitting on a rotating shaft 14 of a rotating fluid machine (a centrifugal compressor), and equipped with a shank 30 connected with the second rear surface 26. In that case, the system comprises at least one check ring 32 assembled by interference fitting on the shank 30 of the rotor 18. The check ring 32 has a first internal circumferential surface 34 coupled by interference fitting with the shank 30, and a second internal circumferential surface 36 coupled by interference fitting with the shaft 14 to increase torque which can be transmitted from the shaft 14 to the rotor 18.

Inventors:

PINZAUTI MASSIMO
CAMATTI MASSIMO
BERTONI GIAMPAOLO

Application Number:

JP2008138811A

Publication Date:

December 11, 2008

Filing Date:

May 28, 2008

Export Citation:

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Assignee:

NUOVO PIGNONE SPA

International Classes:

F16D1/09; F16D1/08

Domestic Patent References:

JP2001124101A	2001-05-08
JP2006214341A	2006-08-17
JPS5880622U	1983-05-31
JPH0942193A	1997-02-10
JP2001124101A	2001-05-08
JPS6026197A	1985-02-09
JPS48100205U	1973-11-26

Foreign References:

WO2006043556A1	2006-04-27
US7527479B2	2009-05-05

Attorney, Agent or Firm:

Kenichi Matsumoto
Hirokazu Ogura
Toshihisa Kurokawa
Arakawa Satoshi

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