Optimal design of impeller for self-priming pump based on orthogonal method

Area of Science:

• Fluid mechanics
• Mechanical engineering
• Pump technology

Background:

• Self-priming pumps are crucial for outdoor emergency rescue mobile pump trucks.
• Impeller design significantly impacts pump efficiency and head.
• Optimizing hydraulic performance is key to improving pump functionality.

Purpose of the Study:

• To optimize the hydraulic performance of a self-priming pump impeller for emergency rescue applications.
• To investigate the influence of key impeller design parameters on pump performance.
• To achieve higher head and improved efficiency, particularly at high flow rates.

Main Methods:

• Numerical calculations and experimental validation were used to ensure method reliability.
• Orthogonal experimental design (L9(3^4)) was employed to study impeller parameters.
• Range analysis determined the influence order of factors on head and efficiency.

Main Results:

• The optimized impeller design resulted in increased head across all flow conditions compared to the prototype.
• Significant improvements in efficiency were observed at high flow rates.
• A wider high-efficiency zone was achieved with the optimized impeller.

Conclusions:

• The impeller is a critical component for self-priming pump performance optimization.
• Orthogonal experimental design is an effective method for optimizing pump hydraulic performance.
• The optimized self-priming pump design offers superior performance for emergency rescue operations.