ANTI-REVERSE MECHANISM Russian patent published in 2018 - IPC F04D29/00 F04D15/02 F04D7/08 

FIELD: motors and pumps.

SUBSTANCE: invention relates to vane pumps and can be used at nuclear power plants in the main circulation pumping units of the primary coolant circuit of a nuclear power plant. Anti-reverse mechanism for a pump unit consists of three flat discs tightened with bolts with grooves made on the contacting surfaces of the discs and filled rolling elements. In this case, the central toothed disk has the ability to shift relatively to the two extreme toothless discs within the compression of the spring-loaded stops installed in rectangular grooves, made both on the lower plane of the toothed disk and on the upper plane of the lower disk, providing for the removal of excess load from the locking elements when they engage with the toothed disk.

EFFECT: invention is aimed at reducing the efforts on the locking elements and its fastening elements.

5 cl, 5 dwg