FRANCIS-TYPE PUMP FOR A HYDROELECTRIC POWER PLANT

摘要

The invention relates to a Francis-type pump, comprising the following features: - an impeller; - a spiral housing; - a suction pipe; and - a counter angular momentum generator which is arranged in the inflow to the impeller, which can be activated during the operation of the pump and deactivated after the operation, and which generates an angular momentum that acts against the rotational direction of the impeller.