Analysis of Sealing Performance of Ultra High Pressure Plunger Booster Pump with Plug Combination Sealing
In order to study the sealing properties of the ultra high pressure piston booster pump,based on Mooney-Riv-lin constitutive relationship of rubber material,a two-dimensional axisymmetric finite element model of the combined seal was established in Ansys Workbench.The effect of medium pressure,pre-compression and friction coefficient on the sealing performance of combination seal was studied.The friction stress of O-ring in combination seal was analyzed.The results show that the maximum von Mises stress of PTFE sealing ring and O-ring in the combination seal increases with the in-crease of medium pressure,and the high stress areas of both move with the change of medium pressure.When the medium pressure is certain,the pre-compression rate has a significant impact on the maximum von Mises stress of the combination seal during the external stroke,and the von Mises stress increases with the increase of the pre-compression rate.The fric-tion coefficient of O-ring has the greatest influence on its friction stress.The friction stress of O-ring increases with its fric-tion coefficient.While ensuring good sealing,reducing the pre-compression and friction coefficient is beneficial for exten-ding the working life of the combination seal of the ultra high pressure piston booster pump.
ultra high pressure plunger booster pumpplug combined sealsealing performancefinite element analysis
NETL
NSTL
万方数据
