Influence Factors Analysis on Performance of Linear Reciprocating Sealing
Taking the sealing structure of manual pumps as the research object,the sealing performance during linear reciprocating motion was studied.Based on the ANSYS Workbench simulation platform,the contact pressure and Shear stress were used as the basis for sealing failure judgment.The influence of compression ratio,fluid pressure,fit clearance,friction coefficient and hardness on sealing performance was analyzed.The excitation effect of wear and thermal deformation on the failure form was discussed.The results showed that during the pre sealing process,the probability of internal fracture failure of the sealing ring was relatively high at high compression rates;Under working condition,the contact pressure of the sealing ring was distributed asymmetrically.Gap extrusion occurs at high fluid pressure,large fit clearance,high friction coefficient and low hardness,and the sealing ring broke from the surface of the extrusion part;Wear increased the risk of leakage failure,while thermal deformation increases the risk of shear failure,and high temperatures increase the amount of oil film leakage.
万方数据
维普
