Y-shaped hydraulic seals have three sealed hydraulic reciprocating motion in the system: non-operating state, the state and the static pressure reciprocating state. Compression preload Nonoperating that is, after the Y-shaped hydraulic seal installation naturally occurring; hydrostatic working condition namely Y-ring constant hydraulic pressure is applied and the Y-shaped ring remains stationary working condition; reciprocating piston reciprocates work state that is (an inner and an outer stroke stroke constitute a work cycle) working condition. 3 operating state can be carried out by the ANSYS software simulation analysis, the author mainly analyzes static working condition, the initial finite element model of the piston rod to move axially and pressed Y-shaped hydraulic seal obtained.

 

Get the initial finite element model of Y-ring by the axial movement of the piston rod 2, and the results analyzed using ANSYS software Y-shaped seal hydraulic model simulation analysis, structural parameters by changing the Y-shaped hydraulic seal (outer lip angle and lip Valley high hv,) and static operating parameters (static hydraulic p) to obtain the Von Mises stress cloud and cloud contact pressure corresponding case, that analysis of different structural parameters and the static hydraulic pressure of the hydraulic Y-shaped ring seal performance. Von Mises stress that is equivalent stress, reflecting the size of each principal stress difference generally Von Mises stress value larger area, material more prone to slack on the cross-section, and then cracks will eventually lead to failure of the seal contact pressure magnitude directly the reaction of the Y-shaped hydraulic seal sealing performance, the contact pressure is not less than the static oil pressure p is Y-ring seal to ensure that the first condition.