Impeller blade modification method of guide vane type mixed-flow pump and modified blade of mixed-flow pump

• Main Authors: WU SONGQUAN, TAO RAN, SUN YI, LU JIAHAO, CHEN BEISHUAI, QIAO FENGQUAN
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2024
• Subjects: BLASTING; CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; PHYSICS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The invention relates to the technical field of water pumps, and provides an impeller blade modification method of a guide vane type mixed-flow pump and a modified blade of the mixed-flow pump. The impeller blade trailing edge modification method comprises the following steps that an initial blade airfoil of a runner blade is obtained; based on the initial blade airfoil, determining a modification area of the runner blade, and performing flow surface division on the modification area to obtain a plurality of sequentially arranged modification flow surfaces; the multiple modified flow surfaces are modified, and a modified blade airfoil is obtained; and based on the initial blade airfoil and the modified blade airfoil, verifying the blade modification effect, and determining that the hydrodynamic performance of the modified blade airfoil meets the requirement. According to the method for modifying the tail edge of the impeller blade, the strength of dynamic and static interference between the runner blade and t