Design of High-Speed Magnetic Pump Based on the Numerical Simulation

The high-speed magnetic pump has the characteristic of zero leakage, small volume and high efficiency. In order to enhance the performance of high-speed magnetic pump and shorten the design period, the hydraulic components and magnetic coupling are designed on the basis of numerical simulation. The hydraulic components designed initially are applied by the design method of high-speed partial emission pump. The internal flow field of the pump is simulated with the FLUENT CFD software. The distributions of absolute velocity, relative velocity and total pressure of pump are gained. The inlet structure and geometry of the magnetic pump are modified based on the simulation results. The magnetic coupling is designed by using empirical factors. The magnetic field of the magnetic coupling is simulated with 2-D Magnetic Vector Potential (MVP) formula using the ANSYS software. The distributions of magnetic force line at origin, working situation and maximum magnetic rotating angle are obtained. The magnetic torque simulated value approaches the result calculated with the empirical formula. The test results of the improved magnetic pump show that the hydraulic performance and outline dimensions meet requirements. The method of design-simulation-improvement-test is successful.