| In the mould hydraulic oscillation system, the working performance of the mould oscillation servo hydraulic cylinder had important influence on the highly efficient production of the continuous casting line. For the working performance, the main factors were the sealing combination on the piston and the piston rod. Because the hydraulic cylinder often works in the high frequency and big load working environment, traditional rubber sealing ring combination would cause severe wear and failure in this conditions. To address this situation, Shaoguan Hydraulic Components Factory opened balanced-pressure grooves on the piston to use a new non-contact seal way--clearance seal. This method could effectively avoid the disadvantages of traditional seal, so that the quality of the cylinder got bigger promotion. But on the piston rod, the guide sleeve still used traditional rubber sealing ring. In the harsh conditions, this could cause severe friction and a lot of fever, which could burn the piston rod plating chromic layer and cause serious leakage. Based on the situation, this paper designed a new type of back-up ring with clearance seal, instead of the guide sleeve, and applied fluid-solid interaction analysis method to research it and finalize the design.Firstly, using Pro/E and Gambit to establish the model of back-up ring and flow field of gap seal. Using relevant software to mesh the model.Secondly, based on Workbench, using Fluent to analysis the flow field, then importing the results into ANSYS Mechanical APDL and using it to research the back-up ring (fluid-solid interaction analysis).Finally, compared simulation results data, this paper got the best clearance sealed clearance thickness and supporting ring thickness.The paper introduced a new simulation method of fluid-solid interaction analysis into Hydraulic field to study the clearance seal and the solid ring, which was very important to the research of clearance seal and its application in the future... |
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