Rotary machine having a suspended shaft
AssigneeCommissariat a l'Energie Atomique
InventorsJoel Guidez, Paul Lecouvreur, Jean Roumailhac
Life of this patent
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Abstract
A rotary machine such as a pump has a vertical driveshaft suspended from the upper end and provided at the lower end with an impeller surrounded by a casing in which provision is made for a suction chamber fitted with stationary radial vanes integral with the casing. The driveshaft is rotatably mounted in a hydrostatic bearing placed beneath the impeller, a removable sleeve being mounted coaxially with the shaft between the suction chamber and the impeller.
Claims5
A rotary machine having a vertical drive shaft of varying diameter suspended from the upper end thereof and provided at the lower end thereof with an impeller-wheel surrounded by a casing in which is incorporated a suction chamber fitted with stationary radial vanes integral with the casing, wherein said shaft is rotatably mounted in a hydrostatic bearing placed beneath said impeller-wheel, a removable stationary sleeve being mounted coaxially with said shaft between said suction chamber and said impeller-wheel, said sleeve including a surface of revolution having its axis coincident with the axis of rotation of said shaft, said surface of revolution having a diameter varying in direct constant relation to the diameter of said shaft.
Dependencies are inferred from the claim text.