High-speed centrifugal pump axial force balance structure and prediction method thereof

The invention discloses a high-speed centrifugal pump axial force balance structure and a prediction method thereof.The centrifugal pump comprises a volute (1), an impeller (2), a rotating shaft (3) and an inducer (4), the volute comprises a front pump shell (11) and a rear pump cover (12), the impeller comprises a front disc (21), a rear disc (22) and blades, and a sealing ring is arranged on the outer side of the rear disc. The first groove is formed in the rear pump cover, the first groove is an annular groove, a plurality of axial force adjusting parts are arranged in the first groove and distributed in the circumferential direction, and the first groove is located on the radial outer side of the sealing ring. The axial force of the high-speed centrifugal pump can be effectively predicted and balanced, the design period of the high-speed pump is shortened, the design reasonability of the high-speed centrifugal pump is improved, the operation stability of the pump is improved, and the service life is prolo