|
|
Finite element analysis of high temperature pump impeller stressbased on fluidsolid coupling |
1.Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.Tianjin Tianfa Heavy Machinery & Hydro Power Equipment Manufacture Company Limited, Tianjin 300400, China |
|
|
Abstract According to 2-D map of high temperature pump, the main parts of high temperature pump were modeled by Pro/E software. The fluid field of high temperature pump was numerically simulated by CFX program to obtain the pressure change at different work conditions. Based on fluid-solid coupling, stress-strain was analyzed by Ansys program at static load to investigate the deformation and stress distribution of impeller. The results show that the deformation and the distribution of stress-strain become uniform due to the symmetry of first stage. The obvious stress concentration can be found at the blade root, and diffuses to the blade outside with the increase of blade radius. The minimum stress is near to the outer margin of blade. The position of stress concentration is close to the intersection of secondary blade and hub. The maximum static stress on impeller decreases with the increase of shaft power, but with poor linear relationship.
|
|
|
|
|
|
|
|