In order to study the performance of Rayleigh step in dry gas seal,the calculation model of Ray-leigh step dry gas seal was established.The Workbench fluid-structure coupling analysis module was used to simulate and calculate the force and deformation of the dynamic and static ring under the action of the o-verall air film,and the deformation and stress influence of different working conditions and sealing ring ma-terials on the dynamic and static ring were explored.The results show that the air film pressure at the groove root is the largest,the dynamic pressure effect is the strongest,and the gas film force is also large,so the maximum stress and deformation of the moving-static ring are also located at the groove root.When the inlet pressure and rotational speed increase,the gas film force also increases,so that the stress value and shape variable of the dynamic and static ring increase.The moving ring material has a higher modulus of elasticity than the static ring material,so the stress change of the moving ring is larger than that of the static ring,and the stress change caused by the coupling of resistance is greater,so as to achieve the pur-pose of reducing the deformation of the sealing ring.
关键词
瑞利台阶/干气密封/模拟计算/流固耦合
Key words
Rayleigh steps/Dry gas seal/Simulation calculation/Fluid-structure coupling
维普
万方数据