Efficient Integrated Fluid Machinery Development and Key Technology Research
This project proposes to build a computational model based on the principle of motor electromagnetism for the spatial and temporal correlation between transient starting torque and fluid flow, to optimize the motor starting torque, and to build an intrinsic link between the fluid flow pattern and the geometric factors affecting the performance change during the high-speed rotation of the impeller; to deeply explore the fluid machinery vibration and noise excitation sources and their source characteristics, and to propose the corresponding specific measures for vibration and noise reduction Theoretical and technical support for the compact, safe, efficient, low-vibration and low-noise operation of industrial fluid machinery conveying systems.
The following scientific problems are to be solved:
(1) Hydrodynamic noise mechanism and vibration and noise reduction of integrated axial permanent magnet electric pump. The research is based on the modified shear layer adaptive separation vortex model of noise numerical simulation method, to explore the noise generation location and sound pressure level, to reveal the noise radiation mechanism in the integrated permanent magnet electric pump, and to propose specific measures for noise suppression.
(2) Parametric multi-objective optimization design of high-efficiency integrated axial permanent magnet electric pump based on genetic algorithm. The mathematical relationship between the key geometrical parameters of the impeller and worm housing and the performance parameters of multiple working conditions is developed.
(3) High efficiency magnetic transfer technology and thermal management mechanism of integrated axial permanent magnet electric pump. In-depth analysis of the loss characteristics of axial permanent magnet motor, reveal the copper consumption, iron consumption, permanent magnet eddy current loss, mechanical loss and stray loss change law, from the cooling and loss suppression technology two aspects of in-depth study of thermal management technology of axial permanent magnet motor.
(4) New low-noise integrated axial permanent magnet electric pump development and model test. For the technical requirements of electric pump and fan with compact structure, safety and efficiency, low vibration and low noise, the integrated electric pump with ultra-compact structure and absorption of motor vibration and noise is developed by highly integrating the rotor and vane of axial permanent magnet motor into the main body and submerged inside a special worm shell.
(5) In order to verify the feasibility of each index of the new integrated axial permanent magnet electric pump and fan, build a hydraulic performance, cavitation performance, material performance and vibration and noise test platform that can cover different specification models to meet the requirements. After all indicators meet the requirements, a demonstration project will be formed.
