PUMP Russian patent published in 2013 - IPC F04D29/44 

FIELD: engines and pumps.

SUBSTANCE: proposed pump has housing 1 with lateral suction pipe 3 connected to annular chamber 4 changing into conical pipe 5 ahead of rotor impeller 2. Inner and outer walls 6 of said conical pipe 5 are rigidly connected by shaped identical supports 7 arranged regularly over radial section of pipe 5. Annular chamber 4 and pipe 3 feature thick walls. Thick-wall section of conical pipe ensures stiffness of the stator in crosswise and lengthwise directions and invariable sizes in cold pump. Shaped supports provided for fluid flow acceleration. Thin-wall section of pump inlet allows deformation of inlet in turbo pump assy in mounting and in cooling without flexure of stator bearing seat axes and uniform fluid feed to conical pipe.

EFFECT: decreased influence of geometrical asymmetry of lateral feed on stator seat axes sharp curves.

1 cl, 1 dwg