Measurement device and method for transient radial force of impeller of mixed-flow pump

The invention provides a measurement device and method for the transient radial force of an impeller of a mixed-flow pump. A rear end bearing sleeve is arranged between angular contact ball bearings and a rear end bearing pedestal, wherein the angular contact ball bearings are used for bearing a pump shaft of the mixed-flow pump. A front section bearing sleeve is arranged between a cylindrical roller bearing and an impeller hub. Multiple circular grooves are formed in the outer ring of the rear end bearing sleeve, multiple circular grooves are formed in the outer circle of the front section bearing sleeve, and the circular grooves are used for containing a pressure sensor. Movement of the pressure sensor is limited by pressing nuts installed on the rear end bearing pedestal and the impeller hub. The radial force exerted by the pump shaft on the angular contact ball bearings and the cylindrical roller bearing in different radial directions is detected in real time through the pressure sensor so that the transi