Valve Plate for Piston Pump Cavitation Problem with the Damp Groove Structural Optimization

Abstract:

To reduce the cavitation occurring on valve plate of typical Swashplate piston pump, an optimization design method was introduced to quantitively analyse the accurate relationship between structural jet grooves parameters and cavitation.Using the CFD method, the sunking and discharging process in piston pump was simulated dynamically.The damp grooves structure effect on both jet angle and pressure shock were analysed visually with a series of different parametrical grooves.By establishing parametrical damp groove model, the piston pumps dynamic analysis was integrated with the technologies of CFD analysis, experimental design and approximation model, etc.The mathematical model of plunger pressure in oil back period, jet angle and structural parameters of damp groove were established in the form of second-order RSM model. The damp groove structure of valve plate was optimized on the basis of the RSM model.Test data show that the anti-cavitation performance of optimized valve plate was increased obviouslyAnd this method provided theoretical foundation for the structure design of damp groove.

• Periodical: Applied Mechanics and Materials (Volumes 543-547)
• Pages: 154-157
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.543-547.154
• Online since: March 2014
• Authors: Wei Liu*, An Lin Wang, Xue Wen Shan, Xiao Lu Zhang, Tao Jiang
• Keywords: Cavitation, Computational Fluid Dynamics (CFD), Jet Angle, Piston Pump, Valve Plate

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