IMPELLER FOR BOILER FEEDWATER PUMP

摘要

The present invention relates to an impeller for a boiler feedwater pump. The impeller for a boiler feedwater pump is installed in a boiler feedwater pump in a plurality of stages and transfers feedwater, which flows inside, at high temperatures. The impeller comprises a plurality of impeller blades applying pressure to the feedwater flowing inside. A plurality of extension areas are formed on a front end of the impeller blade as an extension line returned by being extended forwards from the front end is repeatedly formed such that the area of the front end of the impeller blade is partially expanded. The impeller for a boiler feedwater pump prevents instability and occurrence of surging by inducing to change a flow rate in a storage area of the feedwater pump, and maintains a strength of the impeller blade.