A technique facilitates movement of fluids with reduced component loading by utilizing opposed axial forces. The system for moving fluid may be in the form of a gas compressor, liquid pump, or other device able to pump or otherwise move fluid from one location to another. According to an embodiment, the system includes rotor sections which are combined with pumping features. The rotor sections are disposed radially between corresponding inner and outer stator sections which may be powered to cause relative rotation of inner and outer rotor sections in opposite directions. The rotors and corresponding pumping features are configured to move fluid in opposed axial directions toward an outlet section so as to balance axial forces and thus reduce component loading, e.g. thrust bearing loading.

Guide vane adjusting device for a flow machine to rotate guide vanes, with a driveshaft, and a control ring that transmits rotation of the driveshaft to rotate the guide vanes. The driveshaft is directly coupled with one of the guide vanes to be directly rotatable by the driveshaft without the intermediary of the control ring. The directly driven guide vane is articulately coupled with the control ring via a transmission lever. The other guide vanes are indirectly rotatable with the intermediary of the control ring. The control ring is displaceable in circumferential and axial direction such that forces at coupling points between the control ring and the transmission levers coupled with the control ring run perpendicular to the transmission levers.

A technique facilitates movement of fluids with reduced component loading by utilizing opposed axial forces. The system for moving fluid may be in the form of a gas compressor, liquid pump, or other device able to pump or otherwise move fluid from one location to another. According to an embodiment, the system comprises rotor sections which are combined with pumping features. The rotor sections are disposed radially between corresponding inner and outer stator sections which may be powered to cause relative rotation of inner and outer rotor sections in opposite directions. The rotors and corresponding pumping features are configured to move fluid in opposed axial directions toward an outlet section so as to balance axial forces and thus reduce component loading, e.g. thrust bearing loading.

Guide vane adjusting device for a flow machine to rotate guide vanes, with a driveshaft, and a control ring that transmits rotation of the driveshaft to rotate the guide vanes. The driveshaft is directly coupled with one of the guide vanes to be directly rotatable by the driveshaft without the intermediary of the control ring. The directly driven guide vane is articulately coupled with the control ring via a transmission lever. The other guide vanes are indirectly rotatable with the intermediary of the control ring. The control ring is displaceable in circumferential and axial direction such that forces at coupling points between the control ring and the transmission levers coupled with the control ring run perpendicular to the transmission levers.