PUMP WITH AXIAL BALANCER Russian patent published in 2015 - IPC F04D29/41 

FIELD: motors and pumps.

SUBSTANCE: group of the inventions relates to balancing of turbopumps for space motors. The pump contains stator (112) and rotor containing an impeller (111), through which a flow duct (114) for fluid medium passes. This impeller (111) comprises the device for axial balancing containing balancing camera (118) and duct (120), formed between the impeller (111) and the stator (112), which ensures the drain of fluid medium from the flow duct (114) into the balancing camera (118). The pressure of fluid medium in the balancing camera (118) compensates the efforts exerted by the fluid medium on another part of the rotor, thus ensuring axial balancing of the rotor. The duct (120) comprises a front nozzle (140) and a back nozzle (160), and also intermediate ring-type camera (150), formed between the walls (151, 152; 161, 162) of the impeller (111) and the stator (112). The camera (150) is located downstream the front nozzle (140) and upstream the back nozzle (160) and is extended in a meridional direction, and the normal to the impeller cylindrical wall (111), generatrix of the nozzle (140, 160), is parallel to the normal to cylindrical wall (161, 162) of the stator (112), generatrix of the nozzle, and is directed to the opposite side.

EFFECT: group of the inventions is aimed at creation of high performance compact safe pump.

14 cl, 5 dwg