Optimization Design and Analysis of the Inlet Structure of the Hydraulic Retarder Stator
In order to effectively reduce the difficulty of casting the stator of the hydraulic retarder,improve the success rate of casting the stator and its braking torque performance,based on the self-developed structural model of the hydraulic retarder prototype,the CAD-CFD design and simulation optimization collaboration method is adopted,and the design concept of uniform wall thickness is adopted.A symmetrical convex liquid inlet structure is designed,and the metal liquid flows symmetrically along the blades on both sides of the inlet(with a thickness of 2 mm)to the symmetrical hexagonal structure inlet(1.5 mm).The casting flow is good,which can effectively avoid defects such as casting gaps,shrinkage,and porosity;the comparison of CFD simulation results for braking torque shows that the symmetrical layout of the inlet of the symmetrical convex table along the corresponding blades can effectively reduce the disturbance of the convex table on the eddy current loss effect,allowing this type of stator to exert better braking torque performance.This study lays the foundation for the structural optimization design and application of the stator of the hydraulic retarder prototype.